* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* SiteSpecs.io inspired color scheme */
    --primary-color: #0066cc;
    --primary-dark: #0052a3;
    --primary-light: #e6f2ff;
    --primary-hover: #0052a3;
    --secondary-color: #00a86b;
    --accent-color: #ff6b35;
    --bg-color: #ffffff;
    --bg-light: #f8f9fa;
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-deepest: #f0f1f3;
    --bg-elevated: #ffffff;
    --bg-highest: #f8f9fa;
    --bg-hover: #f3f4f6;
    --card-bg: #ffffff;
    --input-bg: #ffffff;
    --text-primary: #1a1a1a;
    --text-secondary: #6c757d;
    --text-light: #9ca3af;
    --text-color: #1a1a1a;
    --text-muted: #9ca3af;
    --text-on-primary: #ffffff;
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;
    --user-message-bg: #0066cc;
    --bot-message-bg: #f8f9fa;
    --error-color: #ef4444;
    --success-color: #22c55e;
    --warning-color: #f59e0b;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

[data-theme="dark"] {
    --primary-color: #adc6ff;
    --primary-dark: #4d8eff;
    --primary-light: rgba(173, 198, 255, 0.1);
    --primary-hover: #4d8eff;
    --secondary-color: #82d995;
    --accent-color: #ffba36;
    --bg-color: #111317;
    --bg-light: #111317;
    --bg-primary: #111317;
    --bg-secondary: #1a1c20;
    --bg-deepest: #0c0e12;
    --bg-elevated: #282a2e;
    --bg-highest: #333539;
    --bg-hover: #1e2024;
    --card-bg: #1a1c20;
    --input-bg: #282a2e;
    --text-primary: #e2e2e8;
    --text-secondary: #c2c6d6;
    --text-light: #8c909f;
    --text-color: #e2e2e8;
    --text-muted: #8c909f;
    --text-on-primary: #002e6a;
    --border-color: rgba(66, 71, 84, 0.3);
    --border-light: rgba(66, 71, 84, 0.1);
    --user-message-bg: #adc6ff;
    --bot-message-bg: #1a1c20;
    --error-color: #ffb4ab;
    --success-color: #82d995;
    --warning-color: #ffba36;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.4);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    background: var(--bg-light);
    height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.app-layout {
    display: flex;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.conversation-sidebar {
    width: 300px;
    background: var(--bg-light);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--card-bg);
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.new-conversation-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 6px;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s;
}

.new-conversation-btn:hover {
    background: var(--primary-dark);
}

.conversation-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.conversation-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 8px;
    cursor: pointer;
    transition: all 0.2s;
}

.conversation-item:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
}

.conversation-item.active {
    background: var(--primary-light);
    border-color: var(--primary-color);
    border-width: 2px;
}

.conversation-item.has-activity {
    border-color: var(--activity-color, var(--primary-color));
    box-shadow: 0 0 8px 2px color-mix(in srgb, var(--activity-color, var(--primary-color)) 40%, transparent);
    animation: card-glow 2s ease-in-out infinite;
}

@keyframes card-glow {
    0%, 100% { box-shadow: 0 0 8px 2px color-mix(in srgb, var(--activity-color, var(--primary-color)) 35%, transparent); }
    50% { box-shadow: 0 0 14px 4px color-mix(in srgb, var(--activity-color, var(--primary-color)) 65%, transparent); }
}

.expert-badge-glow {
    animation: badgeGlow 1.5s ease-in-out infinite;
}
@keyframes badgeGlow {
    0%, 100% { box-shadow: 0 0 4px var(--badge-glow-color, #6366f1); }
    50% { box-shadow: 0 0 16px var(--badge-glow-color, #6366f1), 0 0 24px var(--badge-glow-color, #6366f1); }
}

.conversation-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 8px;
}

.conversation-title-container {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 8px;
}

.conversation-title-input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
}

.conversation-title-input:focus {
    outline: 2px solid var(--primary-color);
    background: var(--card-bg);
    cursor: text;
}

.conversation-title-input:read-only {
    cursor: pointer;
}

.edit-title-btn,
.delete-conversation-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    opacity: 0;
}

.conversation-item:hover .edit-title-btn,
.conversation-item:hover .delete-conversation-btn {
    opacity: 1;
}

.edit-title-btn:hover {
    background: var(--bg-light);
    color: var(--primary-color);
}

.delete-conversation-btn:hover {
    background: var(--bg-light);
    color: var(--accent-color);
}

.conversation-dates {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 11px;
    color: var(--text-secondary);
}

.conversation-date {
    display: block;
}

.conversation-tokens {
    display: block;
    font-size: 10px;
    color: var(--text-muted, #888);
    margin-top: 2px;
    opacity: 0.8;
}

.loading-conversations,
.no-conversations,
.error-message {
    padding: 20px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.container {
    width: 100%;
    background: var(--card-bg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

header {
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    padding: 0 32px;
    box-shadow: var(--shadow);
    flex-shrink: 0;
    width: 100%;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
    min-width: 0;
}

.header-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    margin-left: auto;
}

.header-user {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 999px;
    background: color-mix(in srgb, var(--primary-color) 10%, transparent);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
}

.header-user-name {
    max-width: 180px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.header-logout-btn {
    padding: 8px 12px;
    font-weight: 600;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: inherit;
}

.logo-image {
    width: auto;
    height: 56px;
    object-fit: contain;
    flex-shrink: 0;
    padding: 4px 0;
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0;
    margin-left: auto;
    font-weight: 400;
    white-space: nowrap;
}

.header-actions .subtitle {
    margin-left: 0;
}

.header-subtitle {
    margin-right: 8px;
}

.subtitle-short {
    display: none;
}

.clear-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 12px;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    transition: all 0.2s;
}

.clear-btn:hover {
    background: var(--bg-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.header-icon-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 12px;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    transition: all 0.2s;
}

.header-actions a.header-icon-btn {
    text-decoration: none;
}

.header-icon-btn:hover {
    background: var(--bg-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--bg-light);
}

.company-page {
    padding: 24px;
    background: var(--bg-light);
    min-height: calc(100vh - 120px);
}

.company-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
}

.company-card-header h2 {
    margin: 0 0 6px 0;
    font-size: 22px;
    color: var(--text-primary);
}

.company-card-header p {
    margin: 0 0 18px 0;
    color: var(--text-secondary);
    font-size: 13px;
}

.company-main-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
}

.company-main-card {
    background: color-mix(in srgb, var(--primary-color) 8%, var(--bg-light));
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 10px 12px;
}

.company-main-label {
    font-size: 11px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    margin-bottom: 4px;
}

.company-main-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    white-space: pre-wrap;
}

.company-subheader {
    margin: 12px 0 8px 0;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.company-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.company-list-item {
    display: flex;
    gap: 8px;
    align-items: baseline;
    padding: 6px 10px;
    border-radius: 10px;
    background: color-mix(in srgb, var(--bg-light) 70%, transparent);
    border: 1px solid var(--border-color);
    font-size: 13px;
}

.company-list-label {
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 140px;
}

.company-list-value {
    color: var(--text-primary);
    word-break: break-word;
}

.company-error {
    padding: 14px 16px;
    border-radius: 12px;
    background: rgba(239, 68, 68, 0.12);
    border: 1px solid rgba(239, 68, 68, 0.4);
    color: #fecaca;
}

.company-empty {
    padding: 14px 16px;
    border-radius: 12px;
    background: rgba(148, 163, 184, 0.08);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

@media (max-width: 720px) {
    .company-row {
        grid-template-columns: 1fr;
    }
}

.chat-container {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    background: var(--bg-light);
    min-height: 0;
}

.chat-container::-webkit-scrollbar {
    width: 8px;
}

.chat-container::-webkit-scrollbar-track {
    background: var(--bg-light);
}

.chat-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

.chat-container::-webkit-scrollbar-thumb:hover {
    background: var(--text-light);
}

.welcome-message {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.welcome-icon {
    margin-bottom: 24px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.welcome-logo {
    width: 80px;
    height: 80px;
    object-fit: contain;
}

.welcome-robot {
    width: 200px;
    height: 200px;
    object-fit: contain;
    animation: robotAnimate 4s ease-in-out infinite;
    filter: drop-shadow(0 10px 20px rgba(0, 102, 204, 0.3));
    transition: all 0.3s ease;
}

.welcome-robot:hover {
    animation-play-state: paused;
    transform: scale(1.1) rotate(5deg) translateY(-10px);
    filter: drop-shadow(0 15px 30px rgba(0, 102, 204, 0.5)) brightness(1.1);
}

@keyframes robotAnimate {
    0%, 100% {
        transform: translateY(0px) rotate(0deg) scale(1);
        opacity: 1;
        filter: drop-shadow(0 10px 20px rgba(0, 102, 204, 0.3)) brightness(1);
    }
    12.5% {
        transform: translateY(-12px) rotate(3deg) scale(1.02);
        opacity: 0.98;
        filter: drop-shadow(0 12px 22px rgba(0, 102, 204, 0.35)) brightness(1.05);
    }
    25% {
        transform: translateY(-15px) rotate(5deg) scale(1.03);
        opacity: 0.96;
        filter: drop-shadow(0 15px 25px rgba(0, 102, 204, 0.4)) brightness(1.1);
    }
    37.5% {
        transform: translateY(-10px) rotate(2deg) scale(1.01);
        opacity: 0.97;
        filter: drop-shadow(0 13px 23px rgba(0, 102, 204, 0.35)) brightness(1.05);
    }
    50% {
        transform: translateY(-8px) rotate(0deg) scale(1);
        opacity: 1;
        filter: drop-shadow(0 10px 20px rgba(0, 102, 204, 0.3)) brightness(1);
    }
    62.5% {
        transform: translateY(-12px) rotate(-3deg) scale(1.02);
        opacity: 0.98;
        filter: drop-shadow(0 12px 22px rgba(0, 102, 204, 0.35)) brightness(1.05);
    }
    75% {
        transform: translateY(-15px) rotate(-5deg) scale(1.03);
        opacity: 0.96;
        filter: drop-shadow(0 15px 25px rgba(0, 102, 204, 0.4)) brightness(1.1);
    }
    87.5% {
        transform: translateY(-10px) rotate(-2deg) scale(1.01);
        opacity: 0.97;
        filter: drop-shadow(0 13px 23px rgba(0, 102, 204, 0.35)) brightness(1.05);
    }
}

.welcome-message h2 {
    font-size: 32px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
    line-height: 1.2;
}

.welcome-message p {
    margin-bottom: 24px;
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.welcome-message ul {
    list-style: none;
    text-align: left;
    display: inline-block;
    margin-top: 24px;
}

.welcome-message li {
    padding: 10px 0;
    padding-left: 28px;
    position: relative;
    font-size: 15px;
    color: var(--text-secondary);
}

.welcome-message li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: 700;
    font-size: 18px;
}

/* Welcome quick-start chips */
.welcome-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-top: 24px;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.welcome-chip {
    padding: 10px 18px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: var(--bg);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s ease;
}

.welcome-chip:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.welcome-chip-primary {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    font-weight: 600;
}

.welcome-chip-primary:hover {
    filter: brightness(1.1);
}

/* Welcome Insight Bubble (ephemeral X/web greeting as bot message) */
.message.bot.insight-message {
    position: relative;
    animation: insightFadeIn 0.5s ease-out;
}
.message.bot.insight-message .message-content {
    border-left: 3px solid #8b5cf6;
}
.insight-dismiss-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    padding: 2px 6px;
    opacity: 0.5;
    transition: opacity 0.15s;
    border-radius: 4px;
}
.insight-dismiss-btn:hover {
    opacity: 1;
    color: var(--text-primary);
    background: var(--bg-hover);
}
@keyframes insightFadeIn {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* Document suggestion chips (post-classification) */
.suggestion-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}

.suggestion-chip {
    padding: 8px 16px;
    border: 1px solid var(--primary-color);
    border-radius: 16px;
    background: transparent;
    color: var(--primary-color);
    cursor: pointer;
    font-size: 13px;
    transition: all 0.2s ease;
}

.suggestion-chip:hover {
    background: var(--primary-color);
    color: white;
}
.retry-chips {
    margin-top: 8px;
}
.suggestion-chip.chip-type-retry {
    border-color: var(--text-muted);
    color: var(--text-secondary);
}
.suggestion-chip.chip-type-retry:hover {
    background: var(--text-muted);
    color: white;
}

.suggestion-chip:disabled {
    opacity: 0.5;
    cursor: default;
    pointer-events: none;
}

/* Chip colors are now set inline via expert_color from the backend.
   chip-type-* classes are kept for behavioral routing only. */

.suggestion-message .message-content {
    padding: 12px 16px;
}

.chip-expand-btn {
    width: 32px;
    height: 32px;
    min-width: 32px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    padding: 0;
    transition: all 0.2s;
    flex-shrink: 0;
    margin-left: auto;
}

.chip-expand-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.suggestion-chips-overflow {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 8px;
}

.truncation-continue {
    margin-top: 12px;
}

@media (max-width: 600px) {
    .welcome-chips,
    .suggestion-chips {
        flex-direction: column;
    }
}

.message {
    margin-bottom: 24px;
    display: flex;
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message.user {
    justify-content: flex-end;
}

.message-content {
    max-width: 75%;
    padding: 14px 18px;
    border-radius: 12px;
    line-height: 1.5;
    word-wrap: break-word;
    box-shadow: var(--shadow);
}

.message.user .message-content {
    background: var(--user-message-bg);
    color: var(--text-on-primary);
    border-bottom-right-radius: 4px;
}

.message.bot .message-content {
    background: var(--bot-message-bg);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-bottom-left-radius: 4px;
}

/* Expert message styling */
.message.expert-message .message-content {
    border-left: 4px solid var(--expert-color, var(--primary-color));
    background: var(--card-bg);
    border: 1px solid var(--border-color);
}

.expert-badge-container {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.expert-badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 11px;
    font-weight: 600;
    color: white;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.reference-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    margin-top: 8px;
    background: rgba(0, 102, 204, 0.1);
    border: 1px solid rgba(0, 102, 204, 0.3);
    border-radius: 6px;
    font-size: 11px;
    font-weight: 500;
    color: var(--primary-color);
    cursor: help;
    position: relative;
    transition: background 0.2s;
}

.reference-badge:hover {
    background: rgba(0, 102, 204, 0.15);
}

.reference-badge svg {
    flex-shrink: 0;
    stroke: currentColor;
}

.reference-tooltip {
    position: absolute;
    bottom: 100%;
    left: 0;
    margin-bottom: 8px;
    padding: 8px 12px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    box-shadow: var(--shadow-lg);
    font-size: 11px;
    color: var(--text-primary);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transform: translateY(4px);
    transition: opacity 0.2s, transform 0.2s;
    z-index: 1000;
    min-width: 200px;
    max-width: 300px;
}

.reference-badge:hover .reference-tooltip {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.reference-tooltip-header {
    font-weight: 600;
    margin-bottom: 6px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.reference-tooltip-item {
    padding: 4px 0;
    color: var(--text-secondary);
    white-space: normal;
    word-break: break-word;
}

.collaboration-indicator {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: 6px;
    background-color: rgba(0, 102, 204, 0.1);
    color: var(--primary-color);
    font-size: 10px;
    font-weight: 500;
    border: 1px solid rgba(0, 102, 204, 0.2);
}

.collaboration-indicator svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    fill: none;
}

.message-text {
    margin-top: 4px;
}

/* User message formatting - preserve line breaks and paragraph structure */
.message.user .message-text {
    white-space: normal;
    word-wrap: break-word;
}

.message.user .message-text p {
    margin: 0.5em 0;
    line-height: 1.6;
}

.message.user .message-text p:first-child {
    margin-top: 0;
}

.message.user .message-text p:last-child {
    margin-bottom: 0;
}

.message.user .message-text br {
    line-height: 1.6;
}

/* Markdown styling for bot messages */
.message-text h1,
.message-text h2,
.message-text h3,
.message-text h4,
.message-text h5,
.message-text h6 {
    margin-top: 1.2em;
    margin-bottom: 0.6em;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

.message-text h1 {
    font-size: 1.5em;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.3em;
}

.message-text h2 {
    font-size: 1.3em;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.3em;
}

.message-text h3 {
    font-size: 1.1em;
}

.message-text h4 {
    font-size: 1em;
}

.message-text h5 {
    font-size: 0.9em;
}

.message-text h6 {
    font-size: 0.85em;
    color: var(--text-secondary);
}

.message-text p {
    margin-bottom: 1em;
    line-height: 1.6;
}

.message-text p:last-child {
    margin-bottom: 0;
}

.message-text ul,
.message-text ol {
    margin: 1em 0;
    padding-left: 2em;
}

.message-text ul {
    list-style-type: disc;
}

.message-text ol {
    list-style-type: decimal;
}

.message-text li {
    margin: 0.4em 0;
    line-height: 1.6;
}

.message-text li > ul,
.message-text li > ol {
    margin-top: 0.4em;
    margin-bottom: 0.4em;
}

.message-text blockquote {
    margin: 1em 0;
    padding: 0.5em 1em;
    border-left: 4px solid var(--primary-color);
    background: var(--bg-light);
    color: var(--text-secondary);
    font-style: italic;
}

.message-text code {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 3px;
    padding: 0.2em 0.4em;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9em;
    color: #e83e8c;
}

.message-text pre {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1em;
    overflow-x: auto;
    margin: 1em 0;
    line-height: 1.5;
}

.message-text pre code {
    background: transparent;
    border: none;
    padding: 0;
    color: var(--text-primary);
    font-size: 0.85em;
    display: block;
    white-space: pre;
}

.message-text table {
    border-collapse: collapse;
    width: 100%;
    margin: 1em 0;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.message-text table::-webkit-scrollbar {
    height: 6px;
}

.message-text table::-webkit-scrollbar-track {
    background: transparent;
}

.message-text table::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

.message-text thead {
    background: var(--bg-light);
}

.message-text th {
    padding: 10px 14px;
    text-align: left;
    font-weight: 600;
    font-size: 0.85em;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
}

.message-text td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
    min-width: 80px;
}

.message-text tbody tr:last-child td {
    border-bottom: none;
}

.message-text tbody tr:nth-child(even) {
    background-color: rgba(0, 0, 0, 0.02);
}

.message-text tbody tr:hover {
    background-color: rgba(0, 0, 0, 0.04);
}

.message-text hr {
    border: none;
    border-top: 2px solid var(--border-color);
    margin: 1.5em 0;
}

.message-text a {
    color: var(--primary-color);
    text-decoration: none;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

.message-text a:hover {
    border-bottom-color: var(--primary-color);
}

.message-text img {
    max-width: 100%;
    height: auto;
    border-radius: 6px;
    margin: 1em 0;
}

.message-text strong {
    font-weight: 600;
    color: var(--text-primary);
}

.message-text em {
    font-style: italic;
}

.message-text u {
    text-decoration: underline;
}

.message-text s {
    text-decoration: line-through;
}

.expert-message .reply-btn {
    background: var(--expert-color, var(--primary-color));
    color: white;
    border-color: var(--expert-color, var(--primary-color));
}

.expert-message .reply-btn:hover {
    background: var(--expert-color, var(--primary-color));
    filter: brightness(0.95);
    color: white;
}

.excel-download-container,
.word-download-container,
.pdf-download-container {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid rgba(0,0,0,0.1);
}

.excel-warning {
    margin-top: 6px;
    color: #ca8a04;
    font-size: 0.85em;
}

.excel-download-btn {
    background: #22c55e;
    border: 1px solid #22c55e;
    border-radius: 6px;
    padding: 6px 10px;
    cursor: pointer;
    color: white;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
    font-size: 12px;
    font-weight: 500;
}

.excel-download-btn:hover {
    background: #16a34a;
    border-color: #16a34a;
    filter: brightness(0.95);
}

.excel-download-btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.excel-notice {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: 6px;
    margin-bottom: 12px;
    font-size: 12px;
    color: #16a34a;
}

.excel-notice svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    stroke: currentColor;
}

.word-download-btn {
    background: #2563eb;
    border: 1px solid #2563eb;
    border-radius: 6px;
    padding: 6px 10px;
    cursor: pointer;
    color: white;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
    font-size: 12px;
    font-weight: 500;
}

.word-download-btn:hover {
    background: #1d4ed8;
    border-color: #1d4ed8;
    filter: brightness(0.95);
}

.word-download-btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.pdf-download-btn {
    background: #dc2626;
    border: 1px solid #dc2626;
    border-radius: 6px;
    padding: 6px 10px;
    cursor: pointer;
    color: white;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
    font-size: 12px;
    font-weight: 500;
}

.pdf-download-btn:hover {
    background: #b91c1c;
    border-color: #b91c1c;
    filter: brightness(0.95);
}

.pdf-download-btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.word-notice {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(37, 99, 235, 0.1);
    border: 1px solid rgba(37, 99, 235, 0.3);
    border-radius: 6px;
    margin-bottom: 12px;
    font-size: 12px;
    color: #1d4ed8;
}

.word-notice svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    stroke: currentColor;
}

.expand-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px 10px;
    cursor: pointer;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 500;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.expand-btn:hover {
    background: var(--bg-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Formatted content styling for bot messages */
.message.bot .message-content h1,
.message.bot .message-content h2,
.message.bot .message-content h3 {
    margin: 14px 0 8px 0;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

.message.bot .message-content h1 {
    font-size: 22px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
}

.message.bot .message-content h2 {
    font-size: 20px;
    margin-top: 18px;
}

.message.bot .message-content h3 {
    font-size: 18px;
    margin-top: 14px;
    color: var(--primary-color);
}

.message.bot .message-content p {
    margin: 8px 0;
    line-height: 1.5;
    color: var(--text-primary);
}

/* Link styling in messages */
.message-link {
    color: var(--primary-color);
    text-decoration: underline;
    text-decoration-color: rgba(0, 102, 204, 0.3);
    transition: all 0.2s;
    word-break: break-all;
}

.message-link:hover {
    color: var(--primary-dark);
    text-decoration-color: var(--primary-dark);
    background-color: rgba(0, 102, 204, 0.05);
    border-radius: 2px;
    padding: 0 2px;
    margin: 0 -2px;
}

.message.bot .message-content ul {
    margin: 8px 0;
    padding-left: 24px;
    list-style-type: disc;
}

.message.bot .message-content li {
    margin: 4px 0;
    line-height: 1.5;
    padding-left: 4px;
}

.message.bot .message-content strong {
    font-weight: 600;
    color: var(--text-primary);
}

.message.bot .message-content em {
    font-style: italic;
}

.message.bot .message-content ul ul {
    margin-top: 6px;
    margin-bottom: 6px;
    list-style-type: circle;
    padding-left: 20px;
}

.message-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
    gap: 12px;
}

.message-time {
    font-size: 11px;
    opacity: 0.6;
    color: var(--text-secondary);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 4px;
    flex-wrap: wrap;
}

/* User message timestamp */
.message.user .message-time {
    color: var(--text-on-primary);
    opacity: 0.7;
}

.response-time {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    font-size: 10px;
    color: var(--primary-color);
    opacity: 0.85;
    background: rgba(99, 102, 241, 0.08);
    padding: 1px 6px;
    border-radius: 8px;
    font-weight: 500;
    white-space: nowrap;
}

.response-time svg {
    flex-shrink: 0;
}

.response-tokens {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    font-size: 10px;
    color: var(--primary-color);
    opacity: 0.85;
    background: rgba(99, 102, 241, 0.08);
    padding: 1px 6px;
    border-radius: 8px;
    font-weight: 500;
    white-space: nowrap;
}

.response-tokens svg {
    flex-shrink: 0;
}

.response-fallback {
    display: inline-flex;
    align-items: center;
    font-size: 10px;
    color: #d97706;
    cursor: help;
}

.capacity-warning-banner {
    padding: 6px 12px;
    margin-bottom: 8px;
    border-radius: 6px;
    background: rgba(217, 119, 6, 0.1);
    border: 1px solid rgba(217, 119, 6, 0.25);
    color: #d97706;
    font-size: 12px;
    text-align: center;
}

/* Live timer in loading indicator */
.live-timer {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--primary-color);
    opacity: 0.9;
    background: rgba(99, 102, 241, 0.08);
    padding: 3px 10px;
    border-radius: 10px;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    margin-top: 4px;
    white-space: nowrap;
    animation: timerPulse 2s ease-in-out infinite;
}

.live-timer svg {
    flex-shrink: 0;
    animation: timerSpin 4s linear infinite;
}

@keyframes timerPulse {
    0%, 100% { opacity: 0.9; }
    50% { opacity: 0.6; }
}

@keyframes timerSpin {
    /* Gentle tick animation for clock icon */
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Streaming typing cursor */
.streaming-cursor {
    display: inline-block;
    animation: blink 0.7s step-end infinite;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.1em;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* ── Pipeline In-Bubble Status Indicator ──────────────────────── */
/* Shows real-time step progress inside the chat bubble while the  */
/* submittal pipeline (or any multi-step process) is still running */

.pipeline-status {
    margin: 12px 0 8px 0;
    padding: 10px 14px;
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.08), rgba(76, 175, 80, 0.04));
    border: 1px solid rgba(76, 175, 80, 0.25);
    border-radius: 8px;
    animation: pipelinePulse 2s ease-in-out infinite;
}

.pipeline-status-inner {
    display: flex;
    align-items: center;
    gap: 10px;
}

.pipeline-spinner {
    flex-shrink: 0;
    color: #4CAF50;
    animation: pipelineSpin 1.2s linear infinite;
}

.pipeline-status-text {
    font-size: 13px;
    color: var(--text-secondary, #6b7280);
    font-weight: 500;
    line-height: 1.4;
}

/* Progress bar for pipeline steps (e.g. Step 1/7: 18/98 chunks) */
.pipeline-progress-bar {
    margin-top: 10px;
    width: 100%;
    height: 16px;
    background: rgba(76, 175, 80, 0.2);
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}

.pipeline-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #4CAF50, #66BB6A);
    border-radius: 8px;
    transition: width 0.25s ease-out;
    min-width: 0;
}

.pipeline-progress-percent {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
    font-weight: 600;
    color: #1f2937;
    pointer-events: none;
}

@keyframes pipelineSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes pipelinePulse {
    0%, 100% { border-color: rgba(76, 175, 80, 0.25); }
    50% { border-color: rgba(76, 175, 80, 0.5); }
}

/* Dark mode pipeline overrides moved to [data-theme="dark"] block at end of file */

.message-buttons {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.copy-btn,
.retry-btn,
.reply-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px 10px;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all 0.2s;
    font-size: 12px;
    font-weight: 500;
    white-space: nowrap;
}

.copy-btn:hover,
.retry-btn:hover,
.reply-btn:hover {
    background: var(--bg-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.copy-btn svg,
.retry-btn svg,
.reply-btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.message.user .copy-btn,
.message.user .retry-btn {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.3);
    color: white;
}

.message.user .copy-btn:hover,
.message.user .retry-btn:hover {
    background: rgba(255, 255, 255, 0.3);
    border-color: rgba(255, 255, 255, 0.4);
}

.message.user .upload-reply-btn {
    background: rgba(13, 148, 136, 0.3);
    border-color: rgba(13, 148, 136, 0.5);
    color: white;
}
.message.user .upload-reply-btn:hover {
    background: rgba(13, 148, 136, 0.5);
    border-color: rgba(13, 148, 136, 0.7);
}

/* Reply Preview Styles */
.message-reply-preview {
    border-left: 3px solid var(--primary-color);
    background: rgba(0, 102, 204, 0.05);
    padding: 8px 12px;
    margin-bottom: 8px;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}

.message-reply-preview:hover {
    background: rgba(0, 102, 204, 0.1);
    border-left-color: var(--primary-color);
}

.reply-preview-header {
    font-size: 11px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.reply-preview-content {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* User message reply preview: white text for contrast on blue bubble */
.message.user .message-reply-preview {
    background: rgba(255, 255, 255, 0.15);
    border-left-color: rgba(255, 255, 255, 0.6);
}

.message.user .message-reply-preview:hover {
    background: rgba(255, 255, 255, 0.25);
    border-left-color: rgba(255, 255, 255, 0.9);
}

.message.user .reply-preview-header {
    color: white;
}

.message.user .reply-preview-content {
    color: rgba(255, 255, 255, 0.95);
}

/* Reply Message Styles */
.message-reply {
    position: relative;
}

.message-reply .message-content {
    border-left: 3px solid rgba(0, 102, 204, 0.3);
    padding-left: 16px;
}

/* Reply Input Preview */
.reply-input-preview {
    margin-bottom: 8px;
    animation: slideDown 0.2s ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.reply-input-preview-content {
    border-left: 3px solid var(--primary-color);
    background: rgba(0, 102, 204, 0.05);
    padding: 8px 12px;
    border-radius: 4px;
}

.reply-input-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.reply-preview-close {
    background: none;
    border: none;
    padding: 2px 4px;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
}

.reply-preview-close:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

.reply-input-preview-text {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* Message Highlight Animation */
.message-highlight {
    animation: highlightFlash 2s ease-out;
}

@keyframes highlightFlash {
    0% {
        background-color: rgba(0, 102, 204, 0.3);
        box-shadow: 0 0 0 0 rgba(0, 102, 204, 0.7);
    }
    50% {
        background-color: rgba(0, 102, 204, 0.2);
        box-shadow: 0 0 0 8px rgba(0, 102, 204, 0);
    }
    100% {
        background-color: transparent;
        box-shadow: 0 0 0 0 rgba(0, 102, 204, 0);
    }
}

.loading-container {
    padding: 16px 20px;
    background: var(--bot-message-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    position: relative;
    border-bottom-left-radius: 4px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    min-width: 280px;
    box-shadow: var(--shadow);
}

.stop-button {
    align-self: flex-start;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: #dc2626;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.2s;
    margin-top: 4px;
}

.stop-button:hover {
    background: #b91c1c;
    transform: translateY(-1px);
    box-shadow: 0 2px 4px rgba(220, 38, 38, 0.3);
}

.stop-button:active {
    transform: translateY(0);
}

.stop-button svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.loading {
    display: flex;
    gap: 4px;
}

.loading-text {
    font-size: 14px;
    color: var(--text-primary);
    font-weight: 500;
    text-align: center;
    min-height: 20px;
    transition: opacity 0.3s ease;
    line-height: 1.5;
}

.loading-status-detail {
    font-size: 12px;
    color: var(--text-secondary, #6b7280);
    text-align: center;
    margin-top: 6px;
    line-height: 1.4;
    min-height: 16px;
    transition: opacity 0.2s ease;
    font-weight: 400;
    animation: fadeInStatus 0.3s ease;
}

/* Chunk progress UI for multi-batch document processing */
.chunk-progress-container {
    margin-top: 12px;
    width: 100%;
    animation: fadeInStatus 0.3s ease;
}

.chunk-progress-summary {
    margin-bottom: 8px;
}

.chunk-progress-bar-wrapper {
    position: relative;
    width: 100%;
    height: 18px;
    background: rgba(76, 175, 80, 0.15);
    border-radius: 9px;
    overflow: hidden;
}

.chunk-progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #4CAF50, #66BB6A);
    border-radius: 9px;
    transition: width 0.3s ease-out;
}

.chunk-progress-bar-label {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 600;
    color: #1f2937;
    pointer-events: none;
}

.chunk-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    text-align: left;
}

.chunk-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border-radius: 8px;
    font-size: 12px;
    background: rgba(0, 0, 0, 0.03);
    transition: all 0.3s ease;
}

.chunk-item.chunk-complete {
    background: rgba(34, 197, 94, 0.08);
}

.chunk-item.chunk-error {
    background: rgba(239, 68, 68, 0.08);
}

.chunk-item.chunk-processing {
    background: rgba(59, 130, 246, 0.08);
}

.chunk-icon {
    flex-shrink: 0;
    width: 20px;
    text-align: center;
    font-size: 13px;
}

.chunk-label {
    font-weight: 600;
    color: var(--text-primary, #1f2937);
    white-space: nowrap;
    min-width: 55px;
}

.chunk-docs {
    flex: 1;
    color: var(--text-secondary, #6b7280);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 200px;
}

.chunk-status-badge {
    font-size: 11px;
    font-weight: 500;
    white-space: nowrap;
    padding: 2px 8px;
    border-radius: 10px;
    background: rgba(0, 0, 0, 0.06);
}

.chunk-complete .chunk-status-badge {
    background: rgba(34, 197, 94, 0.15);
    color: #15803d;
}

.chunk-error .chunk-status-badge {
    background: rgba(239, 68, 68, 0.15);
    color: #dc2626;
}

.chunk-processing .chunk-status-badge {
    background: rgba(59, 130, 246, 0.15);
    color: #2563eb;
}

.chunk-pending .chunk-status-badge {
    background: rgba(0, 0, 0, 0.06);
    color: #9ca3af;
}

.chunk-spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(59, 130, 246, 0.3);
    border-top-color: #2563eb;
    border-radius: 50%;
    animation: chunkSpin 0.8s linear infinite;
}

.chunk-synthesis {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
    padding: 8px 12px;
    border-radius: 8px;
    background: rgba(139, 92, 246, 0.08);
    font-size: 12px;
    font-weight: 500;
    color: #7c3aed;
}

@keyframes chunkSpin {
    to { transform: rotate(360deg); }
}

@keyframes fadeInStatus {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

.loading-progress-container {
    width: 100%;
    margin-top: 12px;
    display: none;
}

.loading-progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-light);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 6px;
}

.loading-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), #6366f1);
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
    animation: progressPulse 2s ease-in-out infinite;
}

@keyframes progressPulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

.loading-progress-text {
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
    font-weight: 500;
}

.loading dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--expert-loading-color, var(--primary-color));
    animation: bounce 1.4s infinite ease-in-out both;
}

.loading dot:nth-child(1) {
    animation-delay: -0.32s;
}

.loading dot:nth-child(2) {
    animation-delay: -0.16s;
}

@keyframes bounce {
    0%, 80%, 100% {
        transform: scale(0);
    }
    40% {
        transform: scale(1);
    }
}

/* Project summary card (synthesized from document metadata) */
.project-summary-card {
    padding: 12px 20px;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
}
.project-summary-header {
    margin-bottom: 8px;
}
.project-summary-header h3 {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.project-summary-content {
    font-size: 13px;
    color: var(--text-primary);
}
.project-summary-row {
    display: flex;
    gap: 12px;
    margin-bottom: 6px;
    flex-wrap: wrap;
}
.project-summary-label {
    font-weight: 500;
    color: var(--text-secondary);
    min-width: 120px;
}
.project-summary-value {
    color: var(--text-primary);
}
.project-summary-empty {
    color: var(--text-secondary);
    font-style: italic;
    margin: 0;
}
.project-summary-conflicts {
    margin-top: 10px;
    padding: 10px;
    background: rgba(220, 53, 69, 0.08);
    border: 1px solid rgba(220, 53, 69, 0.3);
    border-radius: 6px;
}
.project-summary-conflict-notice {
    margin: 0;
    font-size: 12px;
    color: #c82333;
}
.project-summary-conflict-notice p {
    margin: 0 0 4px 0;
}
.project-summary-conflict-notice p:last-child {
    margin-bottom: 0;
}

/* Project Summary tab panel */
.project-summary-tab-panel {
    padding: 20px;
    background: var(--card-bg);
    flex: 1;
    overflow-y: auto;
}
.project-summary-tab-header {
    margin-bottom: 16px;
}
.project-summary-tab-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 4px;
}
.project-summary-refresh-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-size: 12px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background: var(--bg-light);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s;
}
.project-summary-refresh-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
    color: var(--primary-dark);
}
.project-summary-refresh-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.project-summary-refresh-btn svg {
    width: 14px;
    height: 14px;
}
.project-summary-refresh-btn.loading svg {
    animation: project-summary-spin 1s linear infinite;
}
@keyframes project-summary-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}
.project-summary-tab-header h3 {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 4px 0;
}
.project-summary-tab-hint {
    font-size: 12px;
    color: var(--text-secondary);
    margin: 0;
}
.project-summary-row-editable {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
    flex-wrap: wrap;
}
.project-summary-row-editable .project-summary-label {
    min-width: 160px;
}
.project-summary-value-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 0;
}
.project-summary-edit-btn,
.project-summary-save-btn,
.project-summary-cancel-btn {
    padding: 4px 10px;
    font-size: 12px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background: var(--bg-light);
    color: var(--text-primary);
    cursor: pointer;
}
.project-summary-edit-btn:hover,
.project-summary-save-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
    color: var(--primary-dark);
}
.project-summary-save-btn {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}
.project-summary-edit-input,
select.project-summary-edit-input {
    flex: 1;
    min-width: 120px;
    padding: 6px 10px;
    font-size: 13px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-light);
    color: inherit;
}
#summaryTab .project-summary-content {
    margin-top: 8px;
}
#summaryTab .project-summary-conflicts {
    margin-top: 16px;
}

.documents-section {
    padding: 0;
    background: var(--card-bg);
}

/* Document sub-tab bar */
.doc-subtab-bar {
    display: flex;
    gap: 6px;
    padding: 4px 0 8px;
    flex-shrink: 0;
}
.doc-subtab {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 3px 10px;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.doc-subtab:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}
.doc-subtab.active {
    background: var(--primary-color);
    color: #fff;
    border-color: var(--primary-color);
}
.doc-upload-btn {
    margin-left: auto;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 11px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.doc-upload-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}
.doc-upload-btn svg {
    flex-shrink: 0;
}
#documentsTabPanel > [data-subtab-content] {
    display: none !important;
}
#documentsTabPanel > [data-subtab-content].subtab-active {
    display: flex !important;
    flex-direction: column;
}

.documents-list-container {
    margin-top: 8px;
    overflow-y: auto;
    transition: max-height 0.3s ease, opacity 0.2s ease;
}

.documents-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.document-item {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    padding: 6px 10px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 12px;
    color: var(--text-primary);
    transition: all 0.2s;
}

.document-item:hover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.document-item.document-item-just-added {
    animation: documentItemFadeIn 0.25s ease;
}

@keyframes documentItemFadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

.document-item svg {
    color: var(--primary-color);
    flex-shrink: 0;
}

.document-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.document-delete-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 4px;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}

.document-delete-btn:hover {
    background: rgba(220, 38, 38, 0.1);
    color: #dc2626;
}

.document-delete-btn svg {
    width: 14px;
    height: 14px;
}

.document-index-btn,
.document-refresh-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: 4px;
    color: var(--text-light);
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}

.document-index-btn:hover {
    background: rgba(33, 150, 243, 0.1);
    color: #2196F3;
}

.document-refresh-btn:hover {
    background: rgba(33, 150, 243, 0.1);
    color: #2196F3;
}

.document-index-btn svg,
.document-refresh-btn svg {
    width: 14px;
    height: 14px;
}

.document-index-btn:disabled,
.document-refresh-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.document-ocr-status {
    font-size: 10px;
    color: var(--text-light);
    white-space: nowrap;
    flex-shrink: 0;
}

/* Tab Interface */
.main-tabs {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
    min-height: 0;
    background: var(--bg-light);
}

.tab-buttons {
    display: flex;
    gap: 0;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 0 20px;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-light);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
    top: 1px;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: var(--bg-light);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
    background: var(--card-bg);
}

.tab-btn svg {
    width: 16px;
    height: 16px;
    stroke: currentColor;
}

.tab-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    margin-left: 6px;
    font-size: 11px;
    font-weight: 700;
    border-radius: 9px;
    line-height: 1;
}
.tab-badge-conflicts {
    background: #dc3545;
    color: #fff;
}

.tab-action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px 12px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: var(--text-light);
    cursor: pointer;
    transition: color 0.2s, background 0.2s;
}
.tab-action-btn:hover {
    color: var(--text-primary);
    background: var(--bg-light);
}
.tab-delete-conversation:hover {
    color: #dc3545;
}

.tab-content {
    display: none;
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    min-height: 0;
}

.tab-content.active {
    display: flex;
    flex-direction: column;
}

#summaryTab {
    flex: 1;
    min-height: 0;
}
#summaryTab .project-summary-tab-panel {
    min-height: 0;
}

#documentsTab {
    flex: 1;
    min-height: 0;
}

#chatTab {
    padding: 0;
}
#chatTab.active {
    display: flex;
    flex-direction: column;
}

#chatTab .chat-container {
    flex: 1;
    overflow-y: auto;
    min-height: 0;
}

.reference-section {
    padding: 20px;
    background: var(--card-bg);
    flex: 1;
    overflow-y: auto;
}

/* Settings modal */
.settings-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}
.settings-modal-overlay.open {
    opacity: 1;
    visibility: visible;
}
.settings-modal {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    max-width: 560px;
    width: 90%;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
}
.settings-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}
.settings-modal-header h2 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}
.settings-modal-close {
    background: transparent;
    border: none;
    padding: 6px;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    transition: color 0.2s, background 0.2s;
}
.settings-modal-close:hover {
    color: var(--text-primary);
    background: var(--bg-light);
}
.settings-modal-tabs {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    padding: 0 20px;
    gap: 0;
}
.settings-tab {
    padding: 10px 16px;
    border: none;
    background: none;
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: color 0.2s, border-color 0.2s;
}
.settings-tab:hover {
    color: var(--text-primary);
}
.settings-tab.active {
    color: var(--accent-color, #6366f1);
    border-bottom-color: var(--accent-color, #6366f1);
}
.settings-tab-content {
    display: none;
}
.settings-tab-content.active {
    display: block;
}
.settings-modal-body {
    padding: 0;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
    margin: 20px;
}
.settings-modal-body .reference-section {
    padding: 20px;
    flex: none;
}
.profile-section {
    padding: 20px;
}
.profile-form {
    margin-top: 12px;
}
.profile-field {
    margin-bottom: 12px;
}
.profile-field label {
    display: block;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 4px;
}
.profile-field input {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 13px;
    box-sizing: border-box;
}
.profile-field input:focus {
    outline: none;
    border-color: var(--accent-color, #6366f1);
}
.btn-primary.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
    border-radius: 6px;
    border: none;
    background: var(--accent-color, #6366f1);
    color: white;
    cursor: pointer;
    font-weight: 500;
}
.btn-primary.btn-sm:hover {
    opacity: 0.9;
}
.btn-secondary.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--bg-light);
    color: var(--text-primary);
    cursor: pointer;
    font-weight: 500;
}
.btn-secondary.btn-sm:hover {
    background: var(--border-color);
}
.btn-danger.btn-sm {
    padding: 4px 10px;
    font-size: 11px;
    border-radius: 6px;
    border: 1px solid #ef444444;
    background: transparent;
    color: #ef4444;
    cursor: pointer;
}
.btn-danger.btn-sm:hover {
    background: #ef444411;
}

.documents-tab-panel {
    padding: 20px;
    background: var(--card-bg);
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    min-height: 0;
}
#documentsTab .documents-section {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}
#documentsTab .documents-list-container {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
}
#documentsTab .upload-container {
    margin-top: 16px;
    flex-shrink: 0;
}

/* Generated Documents tab */
#generatedTab {
    flex: 1;
    min-height: 0;
}
.generated-tab-panel {
    padding: 20px;
    background: var(--card-bg);
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    min-height: 0;
}
.generated-documents-header {
    flex-shrink: 0;
    margin-bottom: 16px;
}
.generated-documents-header h3 {
    font-size: 16px;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary);
}
.generated-documents-list {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.generated-documents-empty {
    color: var(--text-secondary);
    font-size: 14px;
    padding: 24px;
    text-align: center;
}
.generated-document-item {
    display: flex;
    flex-direction: column;
    padding: 12px 16px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    gap: 8px;
}
.generated-doc-header {
    display: flex;
    align-items: center;
    gap: 8px;
}
.generated-doc-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    color: white;
    letter-spacing: 0.3px;
    text-transform: uppercase;
    white-space: nowrap;
}
.generated-doc-type-label {
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 500;
}
.generated-doc-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}
.generated-doc-filename {
    font-weight: 500;
    font-size: 13px;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.generated-doc-date {
    font-size: 12px;
    color: var(--text-secondary);
}
.generated-doc-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 4px;
}
.generated-doc-view-chat {
    font-size: 12px;
    color: var(--primary-color);
    cursor: pointer;
    text-decoration: none;
    font-weight: 500;
}
.generated-doc-view-chat:hover {
    text-decoration: underline;
}
.generated-doc-download-btn {
    flex-shrink: 0;
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 500;
    color: var(--primary-color);
    background: transparent;
    border: 1px solid var(--primary-color);
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}
.generated-doc-download-btn:hover:not(:disabled) {
    background: var(--primary-color);
    color: white;
}
.generated-doc-download-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}
.generated-doc-reply-btn {
    flex-shrink: 0;
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 500;
    color: #0d9488;
    background: transparent;
    border: 1px solid rgba(13, 148, 136, 0.4);
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.generated-doc-reply-btn:hover:not(:disabled) {
    background: #0d9488;
    color: white;
    border-color: #0d9488;
}
.generated-doc-delete-btn {
    flex-shrink: 0;
    padding: 6px 14px;
    font-size: 12px;
    font-weight: 500;
    color: #ef4444;
    background: transparent;
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.generated-doc-delete-btn:hover:not(:disabled) {
    background: #ef4444;
    color: white;
    border-color: #ef4444;
}
.generated-doc-delete-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* ── Document Filter Bars (shared across Uploaded, Generated, Drawing Index) ── */
.doc-filters {
    display: flex;
    gap: 6px;
    padding: 6px 8px;
    flex-wrap: wrap;
    align-items: center;
    background: var(--card-bg);
    position: sticky;
    top: 0;
    z-index: 20;
}
.doc-filter-search {
    padding: 5px 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 13px;
    min-width: 160px;
    outline: none;
    transition: border-color 0.2s;
}
.doc-filter-search:focus {
    border-color: var(--primary-color);
}
.doc-filter-search::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}
.doc-filtered-count {
    font-size: 11px;
    color: var(--text-secondary);
    margin-left: auto;
    white-space: nowrap;
}

/* ── Select All / Bulk Action ── */
.select-all-btn {
    padding: 4px 10px;
    font-size: 12px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: transparent;
    color: var(--text-primary);
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.15s, border-color 0.15s;
}
.select-all-btn:hover {
    background: var(--bg-secondary, #f0f0f0);
    border-color: var(--primary-color);
}
.doc-select-cb {
    width: 16px;
    height: 16px;
    cursor: pointer;
    flex-shrink: 0;
    accent-color: var(--primary-color);
}
.bulk-action-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: #1e3a5f;
    color: #fff;
    border-radius: 6px;
    margin: 4px 8px;
    position: sticky;
    top: 36px;
    z-index: 19;
}
.bulk-action-bar .bulk-count {
    font-size: 13px;
    font-weight: 600;
}
.bulk-action-bar .bulk-classify-btn {
    padding: 4px 12px;
    font-size: 12px;
    border: 1px solid rgba(255,255,255,0.4);
    border-radius: 6px;
    background: rgba(255,255,255,0.1);
    color: #fff;
    cursor: pointer;
    transition: background 0.15s;
}
.bulk-action-bar .bulk-classify-btn:hover {
    background: rgba(255,255,255,0.2);
}
.bulk-action-bar .bulk-classify-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.bulk-action-bar .bulk-deselect-link {
    font-size: 12px;
    color: rgba(255,255,255,0.7);
    cursor: pointer;
    text-decoration: underline;
    margin-left: auto;
}
.bulk-action-bar .bulk-deselect-link:hover {
    color: #fff;
}
.bulk-action-bar .bulk-progress {
    font-size: 12px;
    color: rgba(255,255,255,0.9);
    font-style: italic;
}

/* ── Sheet Reply Button ── */
.sheet-card-tags-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 4px;
}
.sheet-card-actions {
    display: inline-flex;
    gap: 6px;
    align-items: center;
    flex-shrink: 0;
}
.sheet-list-actions {
    display: flex;
    gap: 6px;
    align-items: center;
    margin-left: auto;
    flex-shrink: 0;
}
.sheet-reply-btn {
    padding: 8px 16px;
    font-size: 13px;
    font-weight: 500;
    color: #0d9488;
    background: transparent;
    border: 1px solid rgba(13, 148, 136, 0.4);
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
    white-space: nowrap;
}
.sheet-reply-btn:hover {
    background: #0d9488;
    color: white;
    border-color: #0d9488;
}

/* ── Uploaded Documents Card Layout ── */
.uploaded-documents-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.uploaded-document-item {
    display: flex;
    flex-direction: column;
    padding: 12px 16px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    gap: 8px;
}
.uploaded-doc-header {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}
.uploaded-doc-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    color: white;
    background: #64748b;
    letter-spacing: 0.3px;
    text-transform: uppercase;
    white-space: nowrap;
}
.uploaded-doc-type-label {
    font-size: 11px;
    color: var(--text-secondary);
    font-weight: 500;
}
.uploaded-doc-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}
.uploaded-doc-filename {
    font-weight: 500;
    font-size: 13px;
    color: var(--primary-color);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    text-decoration: none;
}
.uploaded-doc-filename:hover {
    text-decoration: underline;
}
.uploaded-doc-meta {
    font-size: 12px;
    color: var(--text-secondary);
}
.uploaded-doc-actions {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 4px;
    flex-wrap: wrap;
}
.uploaded-doc-view-chat {
    font-size: 12px;
    color: var(--primary-color);
    cursor: pointer;
    text-decoration: none;
    font-weight: 500;
}
.uploaded-doc-view-chat:hover {
    text-decoration: underline;
}
.uploaded-doc-index-btn {
    flex-shrink: 0;
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 500;
    color: #0d9488;
    background: transparent;
    border: 1px solid rgba(13, 148, 136, 0.4);
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.uploaded-doc-index-btn:hover:not(:disabled) {
    background: #0d9488;
    color: white;
    border-color: #0d9488;
}
.uploaded-doc-reocr-btn {
    flex-shrink: 0;
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 500;
    color: #22c55e;
    background: transparent;
    border: 1px solid rgba(34, 197, 94, 0.4);
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.uploaded-doc-reocr-btn:hover:not(:disabled) {
    background: #22c55e;
    color: white;
    border-color: #22c55e;
}
.uploaded-doc-reply-btn {
    flex-shrink: 0;
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 500;
    color: #0d9488;
    background: transparent;
    border: 1px solid rgba(13, 148, 136, 0.4);
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.uploaded-doc-reply-btn:hover:not(:disabled) {
    background: #0d9488;
    color: white;
    border-color: #0d9488;
}
.uploaded-doc-delete-btn {
    flex-shrink: 0;
    padding: 5px 12px;
    font-size: 12px;
    font-weight: 500;
    color: #ef4444;
    background: transparent;
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s, border-color 0.2s;
}
.uploaded-doc-delete-btn:hover:not(:disabled) {
    background: #ef4444;
    color: white;
    border-color: #ef4444;
}
.uploaded-doc-index-btn:disabled,
.uploaded-doc-reocr-btn:disabled,
.uploaded-doc-reply-btn:disabled,
.uploaded-doc-delete-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.reference-experts-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 12px;
}

.reference-expert-section {
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    overflow: visible;
}

.reference-expert-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    cursor: pointer;
    transition: background 0.2s;
    user-select: none;
}

.reference-expert-header:hover {
    background: var(--bg-color);
}

.reference-expert-title {
    display: flex;
    align-items: center;
    gap: 8px;
}

.reference-expert-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.reference-expert-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
}

.reference-toggle-btn {
    background: transparent;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--text-light);
    display: flex;
    align-items: center;
    transition: transform 0.2s;
}

.reference-toggle-btn svg {
    transition: transform 0.2s;
}

.reference-expert-content {
    padding: 12px;
    border-top: 1px solid var(--border-color);
}

.reference-upload-area {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 12px;
}

.reference-description-input {
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 11px;
    background: var(--bg-color);
    color: var(--text-primary);
    width: 100%;
}

.reference-description-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.reference-url-section {
    display: flex;
    gap: 6px;
    margin-top: 6px;
}

.reference-url-input {
    flex: 1;
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 11px;
    background: var(--bg-color);
    color: var(--text-primary);
}

.reference-url-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.reference-add-url-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background: var(--primary-color);
    border: none;
    border-radius: 4px;
    color: white;
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
    white-space: nowrap;
}

.reference-add-url-btn:hover {
    background: var(--primary-dark);
}

.reference-add-url-btn svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
}

.reference-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 8px;
}

.reference-empty {
    font-size: 11px;
    color: var(--text-light);
    font-style: italic;
    padding: 8px;
    text-align: center;
}

.reference-item {
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 11px;
    position: relative;
    width: 100%;
    box-sizing: border-box;
    overflow: visible;
}

.reference-item .reference-delete-btn {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
}


.reference-item-info {
    display: flex;
    align-items: flex-start;
    gap: 6px;
    flex: 1;
    min-width: 0;
}

.reference-item-info > div {
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex: 1;
    min-width: 0;
}

.reference-item-url {
    font-size: 10px;
    color: var(--primary-color);
    text-decoration: none;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.reference-item-url:hover {
    text-decoration: underline;
}

.reference-item-filename {
    color: var(--text-primary);
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.reference-item-desc {
    color: var(--text-light);
    font-size: 10px;
    font-style: italic;
}

.reference-delete-btn {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    padding: 6px 8px;
    cursor: pointer;
    color: #ef4444;
    display: flex !important;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all 0.2s;
    border-radius: 4px;
    opacity: 1;
    min-width: 32px;
    min-height: 32px;
    margin-left: 8px;
}

.reference-delete-btn:hover {
    color: #ffffff;
    background: #ef4444;
    border-color: #ef4444;
    opacity: 1;
    transform: scale(1.05);
}

.reference-delete-btn:active {
    transform: scale(0.95);
    background: #dc2626;
    border-color: #dc2626;
}

.reference-delete-btn svg {
    display: block;
    pointer-events: none;
}

.reference-upload-status {
    padding: 6px 10px;
    font-size: 11px;
    border-radius: 4px;
    margin-bottom: 6px;
}

.reference-upload-status.success {
    background: rgba(34, 197, 94, 0.1);
    color: #22c55e;
}

.reference-upload-status.error {
    background: rgba(220, 38, 38, 0.1);
    color: #dc2626;
}

.reference-uploads {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.reference-upload-item {
    flex: 1;
    min-width: 200px;
}

.reference-upload-label {
    display: block;
    cursor: pointer;
}

.reference-upload-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-primary);
    transition: all 0.2s;
}

.reference-upload-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.reference-upload-btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    stroke: currentColor;
}

.reference-status {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 4px;
    min-height: 16px;
}

.reference-status.success {
    color: var(--secondary-color);
}

.reference-status.error {
    color: #dc2626;
}

/* Old reference-item style - keeping for backward compatibility but ensuring delete button shows */
.reference-item-old {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 8px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 11px;
    color: var(--text-primary);
}

/* Legacy delete button style - keeping for backward compatibility */
.reference-item .delete-btn {
    width: 16px;
    height: 16px;
    padding: 0;
    background: transparent;
    border: none;
    color: var(--text-light);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.reference-item .delete-btn:hover {
    color: #dc2626;
}

/* Ensure reference-delete-btn is always visible */
.reference-item .reference-delete-btn,
.reference-item button.reference-delete-btn {
    display: flex !important;
    visibility: visible !important;
    opacity: 1 !important;
    background: rgba(239, 68, 68, 0.1) !important;
    border: 1px solid rgba(239, 68, 68, 0.2) !important;
    color: #ef4444 !important;
    min-width: 32px !important;
    min-height: 32px !important;
    padding: 6px 8px !important;
    margin-left: 8px !important;
}

.upload-container {
    padding: 12px 20px;
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
}

.upload-label {
    display: block;
    cursor: pointer;
}

.upload-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16px 20px;
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    background: var(--bg-light);
    transition: all 0.2s;
    text-align: center;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.upload-area svg {
    color: var(--primary-color);
    margin-bottom: 8px;
    width: 24px;
    height: 24px;
}

.upload-area span {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.upload-area small {
    font-size: 11px;
    color: var(--text-secondary);
    line-height: 1.3;
}

.upload-progress {
    margin-top: 12px;
    padding: 12px;
    background: var(--bg-light);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    border-radius: 4px;
    transition: width 0.3s ease;
    width: 0%;
}

/* ── Panel Loading Spinner (documents list, drawing index) ──── */
.panel-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px 20px;
    gap: 10px;
    width: 100%;
    min-height: 200px;
}
.panel-loading .loading {
    display: flex;
    gap: 4px;
}
.panel-loading-text {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ── Extraction Progress (per-document) ──────────────────────── */
.extraction-progress {
    width: 100%;
    margin-top: 4px;
    padding: 0 4px;
}

.extraction-progress-bar {
    width: 100%;
    height: 4px;
    background: rgba(0, 0, 0, 0.08);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 3px;
}

.extraction-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #2196F3, #00BCD4);
    border-radius: 2px;
    transition: width 0.5s ease;
}

.extraction-progress-text {
    font-size: 11px;
    color: #1976D2;
    font-weight: 500;
    display: block;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    animation: fadeInText 0.3s ease;
}

/* ── Extraction Banner (above chat input) ────────────────────── */
.extraction-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    margin: 0 0 8px 0;
    background: linear-gradient(135deg, #E3F2FD, #F3E5F5);
    border: 1px solid #BBDEFB;
    border-radius: 8px;
    font-size: 13px;
    color: #1565C0;
    animation: slideInBanner 0.3s ease;
}

.extraction-banner-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    color: #1976D2;
}

.extraction-banner-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.extraction-banner-text strong {
    font-size: 13px;
    color: #1565C0;
}

.extraction-banner-text span {
    font-size: 12px;
    color: #42A5F5;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

@keyframes slideInBanner {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Spinning animation for the loading icon */
.spin {
    animation: spinAnim 1s linear infinite;
}
@keyframes spinAnim {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* Send button warning state when extraction is active */
.extraction-warning {
    position: relative;
}
.extraction-warning::after {
    content: '';
    position: absolute;
    top: -3px;
    right: -3px;
    width: 10px;
    height: 10px;
    background: #FF9800;
    border-radius: 50%;
    border: 2px solid white;
    animation: pulse 1.5s infinite;
}
@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.7; }
}

#uploadStatus {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 500;
}

.expert-selector-container {
    padding: 6px 20px;
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.expert-selector-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.expert-selector-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.expert-indicator-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.expert-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 6px;
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    font-size: 11px;
    font-weight: 500;
    color: var(--expert-indicator-color, var(--text-secondary));
    opacity: 0.45;
    transition: all 0.3s;
    user-select: none;
}

.expert-indicator::before {
    content: '';
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--expert-indicator-color, var(--text-secondary));
    flex-shrink: 0;
    transition: all 0.3s;
}

.expert-indicator.expert-active {
    opacity: 1;
    border-color: var(--expert-indicator-color, var(--primary-color));
    background: color-mix(in srgb, var(--expert-indicator-color) 8%, var(--bg-light));
    animation: expert-pulse 1.5s ease-in-out infinite;
}

.expert-indicator.expert-active::before {
    box-shadow: 0 0 6px 2px var(--expert-indicator-color);
}

@keyframes expert-pulse {
    0%, 100% { box-shadow: 0 0 4px 1px color-mix(in srgb, var(--expert-indicator-color) 30%, transparent); }
    50% { box-shadow: 0 0 10px 3px color-mix(in srgb, var(--expert-indicator-color) 50%, transparent); }
}

.expert-indicator.expert-pinned {
    opacity: 1;
    background: var(--expert-indicator-color);
    color: white;
}

.expert-indicator.expert-pinned.expert-active {
    animation: expert-pulse 1.5s ease-in-out infinite;
}

.expert-indicator.expert-executive {
    display: none;
    cursor: default;
}

.expert-indicator.expert-executive.expert-active {
    display: inline-flex;
    opacity: 1;
    border-color: var(--expert-indicator-color, var(--primary-color));
    background: color-mix(in srgb, var(--expert-indicator-color) 8%, var(--bg-light));
    animation: expert-pulse 1.5s ease-in-out infinite;
}

.ce-reviewed-badge {
    display: inline-flex;
    align-items: center;
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 600;
    background: rgba(74, 144, 226, 0.12);
    color: #4A90E2;
    border: 1px solid rgba(74, 144, 226, 0.25);
    white-space: nowrap;
}

/* Expert row expansion styles */
.expert-row-wrapper {
    margin-bottom: 4px;
}

.expert-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: background 0.2s;
}

.expert-row:hover {
    background: var(--bg-light);
}

.expert-expand-btn {
    background: transparent;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--text-light);
    display: flex;
    align-items: center;
    transition: transform 0.2s;
    margin-left: 8px;
}

.expert-expand-btn:hover {
    color: var(--text-primary);
}

.expert-expand-btn svg {
    transition: transform 0.2s;
}

.expert-expandable-content {
    padding: 12px;
    background: var(--bg-light);
    border-top: 1px solid var(--border-color);
    margin-top: 4px;
    border-radius: 0 0 6px 6px;
}

.expert-reference-upload {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.expert-reference-upload-label {
    cursor: pointer;
}

.expert-reference-upload-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-primary);
    transition: all 0.2s;
}

.expert-reference-upload-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
}

.expert-reference-description {
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 11px;
    background: var(--bg-color);
    color: var(--text-primary);
    width: 100%;
}

.expert-reference-description:focus {
    outline: none;
    border-color: var(--primary-color);
}

.expert-reference-url-section {
    display: flex;
    gap: 6px;
}

.expert-reference-url {
    flex: 1;
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 11px;
    background: var(--bg-color);
    color: var(--text-primary);
}

.expert-reference-url:focus {
    outline: none;
    border-color: var(--primary-color);
}

.expert-reference-add-url {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.expert-reference-add-url:hover {
    background: var(--primary-dark);
}

.expert-reference-list {
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.expert-reference-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 8px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 11px;
}

.expert-reference-item-info {
    display: flex;
    align-items: center;
    flex: 1;
    min-width: 0;
    gap: 4px;
}

.expert-reference-item-name {
    font-weight: 500;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.expert-reference-item-url {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 10px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.expert-reference-item-url:hover {
    text-decoration: underline;
}

.expert-reference-delete {
    background: transparent;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--text-light);
    display: flex;
    align-items: center;
    transition: color 0.2s;
}

.expert-reference-delete:hover {
    color: var(--accent-color);
}

.expert-reference-empty {
    padding: 8px;
    text-align: center;
    color: var(--text-light);
    font-size: 11px;
    font-style: italic;
}

.input-container {
    padding: 24px 32px;
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.05);
}

.chat-input-container {
    padding: 20px 24px;
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.05);
}

.input-wrapper {
    display: flex;
    gap: 12px;
    align-items: center;
}

#userInput {
    flex: 1;
    padding: 14px 18px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 15px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
    background: var(--card-bg);
    color: var(--text-primary);
    font-family: inherit;
    resize: none;
    overflow-y: auto;
    min-height: 50px;
    max-height: 200px;
    line-height: 1.5;
    vertical-align: top;
}

#userInput:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.send-btn {
    background: var(--primary-color);
    border: none;
    border-radius: 8px;
    padding: 14px 24px;
    cursor: pointer;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    min-width: 56px;
    font-weight: 500;
}

.send-btn:hover:not(:disabled) {
    background: var(--primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.send-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.context-add-btn {
    border: 2px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-primary);
    border-radius: 8px;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s, color 0.2s;
}

.context-add-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.context-add-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.context-add-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.context-add-menu {
    position: absolute;
    bottom: calc(100% + 8px);
    right: 0;
    min-width: 160px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    box-shadow: var(--shadow-md);
    display: none;
    flex-direction: column;
    z-index: 12;
    padding: 6px;
}

.context-add-menu.open {
    display: flex;
}

.context-add-item {
    background: transparent;
    border: none;
    text-align: left;
    padding: 10px 12px;
    border-radius: 8px;
    font-size: 13px;
    color: var(--text-primary);
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
}

.context-add-item:hover {
    background: var(--primary-light);
    color: var(--primary-color);
}

.project-context-modal .settings-modal-body {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.project-context-modal {
    max-width: 900px;
    width: min(92vw, 900px);
    min-height: 420px;
    position: relative;
}

.project-context-modal .settings-modal-body {
    max-height: 70vh;
}

.project-context-status {
    font-size: 13px;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 10px;
}

.project-context-loader {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary-color);
    animation: project-context-spin 0.8s linear infinite;
}

@keyframes project-context-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.project-context-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 480px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 12px;
    background: var(--background-color);
    flex-grow: 1;
}

.project-context-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--card-bg);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.project-context-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.project-context-item button,
.project-context-item label {
    cursor: pointer;
}

.project-context-item.is-clickable {
    cursor: pointer;
}

.project-context-item.is-clickable:active {
    transform: translateY(1px);
}

.project-context-check {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
}

.project-context-media-check {
    align-items: flex-start;
}

.project-context-media-thumb {
    width: 64px;
    height: 64px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--background-color);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    overflow: hidden;
}

.project-context-media-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.project-context-media-placeholder {
    font-size: 10px;
    color: var(--text-light);
    text-align: center;
    padding: 4px;
}

.project-context-check input[type="checkbox"] {
    width: 18px;
    height: 18px;
}

.project-context-meta {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.project-context-title {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}

.project-context-subtitle {
    font-size: 12px;
    color: var(--text-light);
}

.project-context-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.project-context-pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.project-context-page-info {
    flex: 1;
    text-align: center;
    font-size: 12px;
    color: var(--text-light);
}

.sitespecs-folder-tree {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
}

.sitespecs-tree-row {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--card-bg);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.sitespecs-tree-row:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-sm);
}

.sitespecs-folder-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 26px;
    height: 26px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--background-color);
    color: var(--text-primary);
    cursor: pointer;
}

.sitespecs-folder-toggle:hover {
    border-color: var(--primary-color);
}

.sitespecs-folder-caret {
    font-size: 12px;
    line-height: 1;
}

.sitespecs-folder-label {
    display: flex;
    align-items: baseline;
    gap: 10px;
    flex: 1;
    border: 0;
    background: transparent;
    padding: 0;
    text-align: left;
    color: var(--text-primary);
    cursor: pointer;
}

.sitespecs-folder-name {
    font-weight: 650;
    font-size: 14px;
}

.sitespecs-folder-counts {
    font-size: 12px;
    color: var(--text-light);
    margin-left: auto;
    white-space: nowrap;
}

.sitespecs-tree-children {
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
}

.sitespecs-tree-loading {
    color: var(--text-light);
    font-size: 13px;
    background: var(--background-color);
}

.sitespecs-tree-doc {
    padding-top: 8px;
    padding-bottom: 8px;
}

.project-context-search {
    display: flex;
    align-items: center;
}

.project-context-search input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: var(--card-bg);
    color: var(--text-primary);
    font-size: 13px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.project-context-search input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.project-context-loading-overlay {
    position: absolute;
    inset: 0;
    background: rgba(255, 255, 255, 0.07);
    backdrop-filter: blur(2px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 5;
    border-radius: 12px;
}

.project-context-modal.is-loading .project-context-loading-overlay {
    display: flex;
}

.project-context-loading-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 18px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: var(--card-bg);
    color: var(--text-primary);
    font-size: 14px;
    box-shadow: var(--shadow-md);
}

.error-message {
    background: #fee2e2;
    color: #991b1b;
    padding: 14px 18px;
    border-radius: 8px;
    margin-bottom: 16px;
    border-left: 4px solid #dc2626;
    font-size: 14px;
    font-weight: 500;
}

@media (max-width: 768px) {
    body {
        padding: 0;
    }

    .container {
        height: 100%;
        border-radius: 0;
    }

    header {
        padding: 0 20px;
    }

    .subtitle-full {
        display: none;
    }
    .subtitle-short {
        display: inline;
    }

    .logo h1 {
        font-size: 20px;
    }

    .chat-container {
        padding: 20px 16px;
    }

    .message-content {
        max-width: 85%;
    }

    .input-container,
    .expert-selector-container,
    .upload-container {
        padding: 16px 20px;
    }
    .documents-section {
        padding: 0;
    }

    .welcome-message {
        padding: 40px 16px;
    }

    .welcome-message h2 {
        font-size: 24px;
    }
}

/* ══════════════════════════════════════════════════════════════
   Document Classification Badges & Dropdown
   ══════════════════════════════════════════════════════════════ */

.doc-classify-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    background: #3a3a3a;
    color: #aaa;
    margin-left: 6px;
    white-space: nowrap;
    transition: background 0.2s, color 0.2s;
    flex-shrink: 0;
}

.doc-classify-badge:hover {
    filter: brightness(1.2);
}

/* Type-specific badge colors */
.badge-specifications { background: #1e40af; color: #bfdbfe; }
.badge-drawings { background: #7c3aed; color: #ddd6fe; }
.badge-contract { background: #b45309; color: #fde68a; }
.badge-bid_documents { background: #15803d; color: #bbf7d0; }
.badge-addenda { background: #6b21a8; color: #e9d5ff; }
.badge-rfi { background: #0e7490; color: #cffafe; }
.badge-rfp { background: #0891b2; color: #cffafe; }
.badge-submittal { background: #9a3412; color: #fed7aa; }
.badge-inspection { background: #4338ca; color: #c7d2fe; }
.badge-change_order { background: #dc2626; color: #fecaca; }
.badge-daily_report { background: #059669; color: #a7f3d0; }
.badge-quote_proposal { background: #ca8a04; color: #fef08a; }
.badge-pay_application { background: #0369a1; color: #bae6fd; }
.badge-safety { background: #ea580c; color: #ffedd5; }
.badge-schedule { background: #4f46e5; color: #c7d2fe; }
.badge-other { background: #525252; color: #d4d4d4; }

/* Classification dropdown */
.classify-dropdown {
    background: #2a2a2a;
    border: 1px solid #444;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    max-height: 350px;
    overflow-y: auto;
    width: 260px;
}

.classify-dropdown-header {
    padding: 8px 12px;
    font-size: 11px;
    font-weight: 600;
    color: #888;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 1px solid #333;
}

.classify-dropdown-item {
    padding: 8px 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: 13px;
    color: #ddd;
    transition: background 0.15s;
}

.classify-dropdown-item:hover {
    background: #363636;
}

.classify-dropdown-item.selected {
    background: #1e3a5f;
    color: #fff;
}

.classify-icon {
    font-size: 14px;
    width: 20px;
    text-align: center;
}

.classify-label {
    flex: 1;
}

/* Ensure document item has room for badge (legacy) */
.document-item {
    display: flex;
    align-items: center;
    flex-wrap: nowrap;
}

/* ══════════════════════════════════════════════════════════════
   Documents Table (replaces flex-row layout)
   ══════════════════════════════════════════════════════════════ */

.documents-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
    color: var(--text-primary);
}

.documents-table thead th {
    position: sticky;
    top: 0;
    background: var(--card-bg);
    padding: 6px 8px;
    text-align: left;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
}

.documents-table tbody tr {
    border-bottom: 1px solid var(--border-color, #2a2a2a);
    transition: background 0.15s;
}

.documents-table tbody tr:nth-child(even) {
    background: rgba(255,255,255,0.02);
}

.documents-table tbody tr:hover {
    background: var(--primary-light, rgba(74,144,226,0.08));
}

.documents-table td {
    padding: 5px 8px;
    vertical-align: middle;
    white-space: nowrap;
}

.dt-col-num { width: 30px; text-align: center; color: #666; }
.dt-col-name { min-width: 120px; }
.dt-col-name .document-name {
    display: inline-block;
    max-width: 400px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    vertical-align: middle;
}
.dt-col-class { white-space: nowrap; }
.dt-col-tier { white-space: nowrap; }
.dt-col-type { width: 50px; text-align: center; color: #999; }
.dt-col-size { width: 70px; text-align: right; color: #999; }
.dt-col-ocr { width: 90px; text-align: center; }
.dt-col-actions {
    width: 60px;
    text-align: right;
    white-space: nowrap;
}

.document-row-just-added {
    animation: documentRowFadeIn 0.25s ease;
}

@keyframes documentRowFadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ══════════════════════════════════════════════════════════════
   Spec Tier Badge & Dropdown (IDOT projects)
   ══════════════════════════════════════════════════════════════ */

.spec-tier-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s, color 0.2s;
    border: 1px solid transparent;
}

.spec-tier-badge:hover {
    filter: brightness(1.2);
}

.spec-tier-badge.tier-special_provisions { background: #1e40af; color: #bfdbfe; border-color: #2563eb; }
.spec-tier-badge.tier-addenda { background: #6b21a8; color: #e9d5ff; border-color: #7c3aed; }
.spec-tier-badge.tier-supplemental { background: #0e7490; color: #cffafe; border-color: #06b6d4; }
.spec-tier-badge.tier-standard_specs { background: #15803d; color: #bbf7d0; border-color: #22c55e; }

.spec-tier-badge.tier-unset {
    background: transparent;
    color: #666;
    border: 1px dashed #555;
    cursor: pointer;
}

.spec-tier-badge.tier-na {
    background: transparent;
    color: #555;
    border: none;
    cursor: default;
    font-style: italic;
}

.spec-tier-dropdown {
    background: #2a2a2a;
    border: 1px solid #444;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    max-height: 300px;
    overflow-y: auto;
    width: 240px;
}

/* Addendum number badge */
.addendum-num-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    transition: background 0.2s, color 0.2s;
    background: #7c2d12;
    color: #fed7aa;
    border: 1px solid #c2410c;
}

.addendum-num-badge:hover {
    filter: brightness(1.2);
}

.addendum-num-badge.addendum-unset {
    background: transparent;
    color: #666;
    border: 1px dashed #555;
}

.addendum-number-popover {
    background: #2a2a2a;
    border: 1px solid #444;
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
    width: 220px;
}

.addendum-number-popover .addendum-num-input {
    background: #1a1a1a;
    border: 1px solid #555;
    border-radius: 4px;
    color: #eee;
    padding: 4px 8px;
    font-size: 13px;
    outline: none;
}

.addendum-number-popover .addendum-num-input:focus {
    border-color: #c2410c;
}

.addendum-number-popover .addendum-num-save,
.addendum-number-popover .addendum-num-clear {
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
    cursor: pointer;
    border: 1px solid #555;
    background: #333;
    color: #eee;
    transition: background 0.15s;
}

.addendum-number-popover .addendum-num-save:hover {
    background: #c2410c;
    border-color: #c2410c;
}

.addendum-number-popover .addendum-num-clear:hover {
    background: #555;
}

/* Pipeline confirmation (Yes/No buttons when pipeline intent detected) */
.pipeline-confirmation {
    margin-top: 15px;
    padding: 12px;
    background: #fff3cd;
    border: 2px solid #ffc107;
    border-radius: 6px;
}

.pipeline-confirmation-prompt {
    margin-bottom: 10px;
    font-weight: 500;
    color: #856404;
}

.pipeline-confirmation-buttons {
    display: flex;
    gap: 10px;
}

.pipeline-confirm-yes-btn,
.pipeline-confirm-no-btn {
    padding: 8px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
}

.pipeline-confirm-yes-btn {
    background: #28a745;
    color: white;
}

.pipeline-confirm-yes-btn:hover:not(:disabled) {
    background: #218838;
}

.pipeline-confirm-no-btn {
    background: #6c757d;
    color: white;
}

.pipeline-confirm-no-btn:hover:not(:disabled) {
    background: #5a6268;
}

.pipeline-confirm-yes-btn:disabled,
.pipeline-confirm-no-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Continue response (auto-continuation exhausted) */
.continue-response-container {
    margin-top: 12px;
    padding: 10px 14px;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.25);
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.continue-response-hint {
    font-size: 0.85em;
    color: #6366f1;
    font-weight: 500;
}

.continue-response-btn {
    padding: 6px 16px;
    background: #6366f1;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    font-size: 0.85em;
    transition: background 0.15s;
}

.continue-response-btn:hover {
    background: #4f46e5;
}

/* ══════════════════════════════════════════════════════════════
   Drawing Sheet Index
   ══════════════════════════════════════════════════════════════ */

.sheet-index-section {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
}
#sheetIndexContent {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
}

.sheet-index-filters {
    display: flex;
    gap: 6px;
    padding: 6px 8px;
    flex-wrap: wrap;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 20;
    background: var(--card-bg);
}

.sheet-filter-select {
    padding: 4px 8px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 11px;
    flex: 1;
    min-width: 0;
}

.sheet-filter-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
}

.sheet-filter-toggle input[type="checkbox"] {
    width: 14px;
    height: 14px;
    cursor: pointer;
}

.sheet-index-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 8px;
    padding: 8px;
}

.sheet-index-grid:has(.sheet-group-header) {
    display: block;
}

.sheet-group-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 4px 6px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 8px;
}

.sheet-group-header:not(:first-child) {
    margin-top: 18px;
}

.sheet-group-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 50%;
}

.sheet-group-count {
    font-size: 11px;
    color: var(--text-secondary);
    background: var(--bg-light);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1px 8px;
    white-space: nowrap;
}

.sheet-group-refresh-btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    font-size: 10px;
    font-weight: 500;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    background: var(--bg-light);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    margin-left: auto;
}

.sheet-group-refresh-btn:hover {
    border-color: #7c3aed;
    color: #7c3aed;
    background: rgba(124, 58, 237, 0.06);
}

.sheet-group-refresh-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.sheet-group-refresh-btn svg {
    width: 13px;
    height: 13px;
    flex-shrink: 0;
}

.sheet-group-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 8px;
    margin-bottom: 4px;
}

.sheet-group-cards.list-view {
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* ── Grid/List pill toggle ── */
.sheet-view-toggle {
    display: inline-flex;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    background: var(--bg-secondary);
    padding: 2px;
    gap: 2px;
    flex-shrink: 0;
}
.sheet-view-pill {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 10px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 11px;
    cursor: pointer;
    border-radius: 16px;
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
    white-space: nowrap;
}
.sheet-view-pill:hover {
    color: var(--text-primary);
}
.sheet-view-pill.active {
    background: var(--bg-primary);
    color: var(--primary-color);
    box-shadow: 0 1px 3px rgba(0,0,0,0.12);
}
.sheet-view-pill svg {
    width: 13px;
    height: 13px;
    flex-shrink: 0;
}

/* ── List view override ── */
.sheet-index-grid.list-view {
    display: flex;
    flex-direction: column;
    gap: 0;
}

/* ── List row ── */
.sheet-list-row {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 6px 8px;
    border-bottom: 1px solid var(--border-color);
    transition: background 0.15s;
}
.sheet-list-row:hover {
    background: rgba(255,255,255,0.02);
}

/* ── Thumbnails container ── */
.sheet-list-thumbs {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

/* ── Individual list thumbnail ── */
.sheet-list-thumb {
    width: 100px;
    aspect-ratio: 11 / 8.5;
    border-radius: 4px;
    overflow: hidden;
    position: relative;
    cursor: pointer;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    transition: transform 0.15s, box-shadow 0.15s;
    flex-shrink: 0;
}
.sheet-list-thumb:hover {
    transform: scale(1.05);
    z-index: 10 !important;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}
.sheet-list-thumb.superseded {
    opacity: 1;
    filter: none;
    margin-right: -40px;
}
.sheet-list-thumb.superseded:last-child {
    margin-right: 0;
}
.sheet-list-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* ── Full-coverage superseded overlay (list + tile) ── */
.sheet-sup-overlay {
    position: absolute;
    inset: 0;
    background: rgba(239, 68, 68, 0.75);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    z-index: 5;
    border-radius: 4px;
}
.sheet-sup-overlay-label {
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

/* ── List details column ── */
.sheet-list-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
    cursor: pointer;
    position: relative;
    z-index: 2;
}
.sheet-list-detail-id {
    font-weight: 700;
    font-size: 13px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sheet-list-detail-title {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sheet-list-detail-meta {
    display: flex;
    gap: 12px;
    font-size: 11px;
    color: var(--text-secondary);
}
.sheet-list-detail-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 3px;
    margin-top: 2px;
}

.sheet-card {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    transition: all 0.15s ease;
    position: relative;
    background: var(--bg-primary);
}

.sheet-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.sheet-card.superseded {
    opacity: 1;
}

.sheet-card.superseded .sheet-card-thumb {
    filter: none;
}

.sheet-card-thumb-wrapper {
    position: relative;
    width: 100%;
}

.sheet-card-thumb {
    width: 100%;
    aspect-ratio: 11 / 8.5;
    object-fit: cover;
    display: block;
    background: var(--bg-secondary);
}

.sheet-card-info {
    padding: 6px 8px;
    font-size: 11px;
    line-height: 1.3;
}

.sheet-card-id {
    font-weight: 700;
    font-size: 13px;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.sheet-rev-badge {
    display: inline-block;
    font-size: 10px;
    font-weight: 600;
    padding: 1px 5px;
    border-radius: 4px;
    background: var(--accent-color, #3b82f6);
    color: #fff;
    vertical-align: middle;
    margin-left: 4px;
    letter-spacing: 0.3px;
}
.sd-description-text {
    font-size: 12px;
    line-height: 1.5;
    color: var(--text-secondary);
    display: block;
    max-height: 120px;
    overflow-y: auto;
}
.sheet-desc-textarea {
    width: 100%;
    min-height: 80px;
    resize: vertical;
    font-family: inherit;
    font-size: 12px;
    line-height: 1.5;
    padding: 6px 8px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
}

.sheet-card-title {
    color: var(--text-secondary);
    font-size: 11px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sheet-card-discipline {
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sheet-card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 3px;
    margin-top: 2px;
}

.sheet-tag-pill {
    display: inline-block;
    padding: 1px 6px;
    font-size: 9px;
    font-weight: 600;
    border-radius: 8px;
    background: var(--bg-light);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    white-space: nowrap;
    line-height: 1.4;
}

.sheet-tag-pill.toggleable {
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
    user-select: none;
}

.sheet-tag-pill.toggleable:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.sheet-tag-pill.active {
    background: var(--primary-light);
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.sheet-detail-tags-picker {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
    padding: 6px 0;
}

.sheet-card-badge {
    position: absolute;
    top: 4px;
    right: 4px;
    padding: 1px 5px;
    border-radius: 4px;
    font-size: 9px;
    font-weight: 600;
}

.sheet-card-badge.low-confidence {
    background: #f59e0b;
    color: #000;
}

.sheet-card-badge.superseded-badge {
    background: #ef4444;
    color: #fff;
}

.sheet-card-spinner {
    position: absolute;
    bottom: 4px;
    right: 4px;
    width: 16px;
    height: 16px;
}

.sheet-filtered-count {
    font-size: 11px;
    color: var(--text-secondary);
    padding: 0 8px 4px;
}

.sheet-card-inline-edit input,
.sheet-card-inline-edit select {
    width: 100%;
    padding: 2px 4px;
    font-size: 10px;
    border: 1px solid var(--primary-color);
    border-radius: 3px;
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* Sheet detail modal — side-by-side two-panel layout */
.sheet-detail-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.sheet-detail-modal {
    background: var(--card-bg);
    border-radius: 12px;
    width: 92vw;
    max-width: 1400px;
    height: 88vh;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sheet-detail-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.sheet-detail-header h2 {
    font-size: 20px;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
}

.sheet-detail-close {
    background: transparent;
    border: none;
    padding: 6px;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    border-radius: 6px;
    transition: color 0.2s, background 0.2s;
}

.sheet-detail-close:hover {
    color: var(--text-primary);
    background: var(--bg-light);
}

.sheet-detail-body {
    display: flex;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.sheet-detail-image {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    background: var(--bg-light);
    position: relative;
}

.sd-zoom-toolbar {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    border-bottom: 1px solid var(--border-color);
    background: var(--card-bg);
    flex-shrink: 0;
    white-space: nowrap;
}

.sd-zoom-toolbar-right {
    margin-left: auto;
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

.sd-zoom-toolbar-right .sheet-detail-action-btn {
    padding: 4px 10px;
    height: 28px;
    font-size: 11px;
}

.sd-zoom-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-light);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    transition: all 0.15s;
    line-height: 1;
}

.sd-zoom-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--primary-light);
}

.sd-zoom-level {
    font-size: 11px;
    color: var(--text-secondary);
    min-width: 36px;
    text-align: center;
    font-weight: 500;
}

.sd-image-viewport {
    flex: 1;
    overflow: hidden;
    position: relative;
    cursor: grab;
}

.sd-image-viewport:active {
    cursor: grabbing;
}

.sd-image-viewport.region-mode {
    cursor: crosshair !important;
}

.sheet-detail-sup-overlay {
    position: absolute;
    inset: 0;
    background: rgba(239, 68, 68, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    pointer-events: none;
}
.sheet-detail-sup-overlay span {
    color: #fff;
    font-size: 28px;
    font-weight: 800;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.sd-image-wrapper {
    transform-origin: 0 0;
    position: relative;
    display: inline-block;
}

.sd-image-wrapper img {
    display: block;
    max-width: none;
    user-select: none;
    -webkit-user-drag: none;
    pointer-events: none;
}

.sd-selection-box {
    position: absolute;
    border: 2px solid #7c3aed;
    background: rgba(124, 58, 237, 0.12);
    pointer-events: none;
    z-index: 10;
    border-radius: 2px;
    box-shadow: 0 0 0 1px rgba(124, 58, 237, 0.3);
}

.sd-region-hint {
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(124, 58, 237, 0.9);
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: 20px;
    z-index: 20;
    white-space: nowrap;
    pointer-events: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    animation: sd-hint-pulse 2s ease-in-out infinite;
}

@keyframes sd-hint-pulse {
    0%, 100% { opacity: 0.9; }
    50% { opacity: 1; }
}

.sd-extracting-indicator {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(0,0,0,0.75);
    color: #fff;
    font-size: 13px;
    padding: 10px 20px;
    border-radius: 8px;
    z-index: 30;
    display: flex;
    align-items: center;
    gap: 8px;
}

.sheet-detail-panel {
    width: 340px;
    flex-shrink: 0;
    border-left: 1px solid var(--border-color);
    overflow-y: auto;
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.sheet-detail-field {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sheet-detail-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.sheet-detail-value {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text-primary);
    min-height: 28px;
}

.sheet-detail-value.low-confidence {
    border-left: 3px solid #f59e0b;
    padding-left: 8px;
}

.sheet-detail-value .low-conf-tag {
    font-size: 10px;
    color: #f59e0b;
    font-weight: 500;
}

.sheet-detail-edit-btn {
    background: transparent;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--text-light);
    display: flex;
    align-items: center;
    border-radius: 4px;
    transition: color 0.2s, background 0.2s;
    flex-shrink: 0;
}

.sheet-detail-edit-btn:hover {
    color: var(--primary-color);
    background: var(--primary-light);
}

.sheet-detail-edit-input {
    flex: 1;
    padding: 4px 8px;
    font-size: 13px;
    border: 1px solid var(--primary-color);
    border-radius: 4px;
    background: var(--bg-light);
    color: var(--text-primary);
    min-width: 0;
}

.sheet-detail-edit-input:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--primary-light);
}

.sheet-detail-edit-actions {
    display: flex;
    gap: 6px;
}

.sheet-detail-save-btn,
.sheet-detail-cancel-btn {
    padding: 4px 12px;
    font-size: 12px;
    border-radius: 4px;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.2s;
}

.sheet-detail-save-btn {
    background: var(--primary-color);
    color: #fff;
    border: none;
}

.sheet-detail-save-btn:hover {
    background: var(--primary-dark);
}

.sheet-detail-cancel-btn {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.sheet-detail-cancel-btn:hover {
    background: var(--bg-light);
}


.sheet-detail-action-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    border: 1px solid var(--border-color);
    background: var(--bg-light);
    color: var(--text-primary);
}

.sheet-detail-action-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: var(--primary-light);
}

.sheet-detail-action-btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.sheet-delete-btn:hover {
    border-color: #dc2626;
    color: #dc2626;
    background: rgba(220, 38, 38, 0.08);
}

.sheet-detail-superseded-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    border-radius: 6px;
    font-size: 12px;
    color: #ef4444;
    font-weight: 500;
    flex-wrap: wrap;
}

.sheet-superseded-link {
    color: #ef4444;
    text-decoration: underline;
    cursor: pointer;
    font-weight: 600;
}
.sheet-superseded-link:hover {
    color: #dc2626;
}

.sheet-superseded-clear-btn {
    padding: 5px 12px;
    border: 1px solid rgba(239, 68, 68, 0.4);
    border-radius: 6px;
    background: transparent;
    color: #ef4444;
    font-size: 12px;
    cursor: pointer;
    width: 100%;
    margin-top: 4px;
    transition: background 0.15s, color 0.15s;
}
.sheet-superseded-clear-btn:hover {
    background: rgba(239, 68, 68, 0.1);
}

.sheet-superseded-info {
    font-size: 12px;
    color: #ef4444;
    margin-bottom: 4px;
}

.sheet-detail-supersede-section {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border-color, rgba(255,255,255,0.08));
}

.sheet-mark-superseded-btn {
    padding: 5px 12px;
    border: 1px solid var(--border-color, rgba(255,255,255,0.15));
    border-radius: 6px;
    background: transparent;
    color: var(--text-secondary, #888);
    font-size: 12px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s, border-color 0.15s;
}
.sheet-mark-superseded-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.3);
}

.sheet-supersede-picker {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 6px;
}
.sheet-supersede-picker label {
    font-size: 12px;
    color: var(--text-secondary, #888);
    white-space: nowrap;
}
.sheet-supersede-select {
    flex: 1;
    min-width: 140px;
    padding: 4px 8px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 12px;
}
.sheet-supersede-select option {
    background: var(--bg-primary);
    color: var(--text-primary);
}
.sheet-supersede-confirm-btn,
.sheet-supersede-cancel-btn {
    padding: 4px 10px;
    border: 1px solid var(--border-color, rgba(255,255,255,0.15));
    border-radius: 4px;
    font-size: 11px;
    cursor: pointer;
    transition: background 0.15s, color 0.15s;
}
.sheet-supersede-confirm-btn {
    background: rgba(239, 68, 68, 0.15);
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.3);
}
.sheet-supersede-confirm-btn:hover {
    background: #ef4444;
    color: #fff;
}
.sheet-supersede-cancel-btn {
    background: transparent;
    color: var(--text-secondary, #888);
}
.sheet-supersede-cancel-btn:hover {
    background: rgba(255,255,255,0.05);
}

/* OCR progress bar in sheet index section */
.sheet-ocr-progress {
    padding: 4px 8px;
}

.sheet-ocr-bar {
    height: 4px;
    background: rgba(0, 0, 0, 0.08);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 3px;
}

.sheet-ocr-fill {
    height: 100%;
    background: linear-gradient(90deg, #7c3aed, #a78bfa);
    border-radius: 2px;
    transition: width 0.5s ease;
}

.sheet-ocr-fill.complete {
    background: linear-gradient(90deg, #22c55e, #4ade80);
    transition: background 0.3s ease;
}

.sheet-ocr-text {
    font-size: 11px;
    color: #7c3aed;
    font-weight: 500;
}

@keyframes textGlow {
    0% {
        color: #22c55e;
        text-shadow: 0 0 8px rgba(34, 197, 94, 0.6);
    }
    50% {
        color: #4ade80;
        text-shadow: 0 0 4px rgba(74, 222, 128, 0.3);
    }
    100% {
        color: inherit;
        text-shadow: none;
    }
}

.sheet-value-glow {
    animation: textGlow 2s ease-out;
}

/* Searchable discipline combobox */
.discipline-combobox {
    position: relative;
    flex: 1;
}

.discipline-combobox-input {
    width: 100%;
    box-sizing: border-box;
}

.discipline-combobox-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    max-height: 240px;
    overflow-y: auto;
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 6px 6px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    z-index: 1100;
}

.discipline-combobox-group {
    padding: 6px 10px 3px;
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    background: var(--bg-light);
    border-top: 1px solid var(--border-color);
    position: sticky;
    top: 0;
}

.discipline-combobox-option {
    padding: 6px 12px;
    font-size: 12px;
    cursor: pointer;
    transition: background 0.15s;
    background: var(--card-bg);
    color: var(--text-primary);
}

.discipline-combobox-option:hover {
    background: var(--primary-light);
    color: var(--primary-color);
}

.discipline-combobox-option.selected {
    background: var(--primary-light);
    color: var(--primary-color);
    font-weight: 600;
}

.discipline-combobox-empty {
    padding: 12px;
    font-size: 12px;
    color: var(--text-secondary);
    text-align: center;
    font-style: italic;
}

/* Filter controls row (view toggle + checkboxes + refresh) */
.sheet-filter-controls-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
}

/* Refresh OCR button */
.sheet-refresh-ocr-btn {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 500;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--bg-light);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.sheet-refresh-ocr-btn:hover {
    border-color: #7c3aed;
    color: #7c3aed;
    background: rgba(124, 58, 237, 0.06);
}

.sheet-refresh-ocr-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.sheet-refresh-ocr-btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

@media (max-width: 768px) {
    .sheet-detail-body {
        flex-direction: column;
    }
    .sheet-detail-image {
        min-height: 200px;
        max-height: 50vh;
    }
    .sheet-detail-panel {
        width: 100%;
        border-left: none;
        border-top: 1px solid var(--border-color);
    }
}

/* ── Pipeline resume indicator ── */
.pipeline-resume-indicator {
    display: none;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--input-bg, #1e293b);
    border-bottom: 1px solid var(--border-color, #334155);
    color: var(--text-secondary, #94a3b8);
    font-size: 0.85rem;
}
.pipeline-resume-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #22c55e;
    animation: pipeline-pulse 1.5s ease-in-out infinite;
    flex-shrink: 0;
}
@keyframes pipeline-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* ── Background chat activity indicators ── */

.conversation-activity-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--activity-color, var(--primary-color));
    display: inline-block;
    margin-left: 6px;
    animation: bg-pulse 1.5s ease-in-out infinite;
    vertical-align: middle;
    flex-shrink: 0;
}

@keyframes bg-pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.4; transform: scale(0.8); }
}

.conversation-new-response {
    font-size: 10px;
    background: var(--primary-color);
    color: white;
    padding: 1px 6px;
    border-radius: 8px;
    flex-shrink: 0;
    align-self: flex-end;
}

.conversation-error-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #ef4444;
    display: inline-block;
    margin-left: 6px;
    vertical-align: middle;
    flex-shrink: 0;
}

.background-processing-indicator {
    text-align: center;
    padding: 12px;
    color: var(--text-muted);
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.background-completion-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--card-bg);
    border: 1px solid var(--primary-color);
    padding: 10px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    cursor: pointer;
    z-index: 1000;
    animation: toast-slide-up 0.3s ease-out;
    max-width: 400px;
    text-align: center;
    color: var(--text-color);
    font-size: 14px;
}

.background-completion-toast:hover {
    border-color: var(--primary-hover);
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}

@keyframes toast-slide-up {
    from { transform: translateX(-50%) translateY(20px); opacity: 0; }
    to { transform: translateX(-50%) translateY(0); opacity: 1; }
}

/* ══════════════════════════════════════════════════════════════════
   DARK MODE COMPONENT OVERRIDES
   All rules scoped to [data-theme="dark"] so the light theme is untouched.
   ══════════════════════════════════════════════════════════════════ */

/* ── Scrollbar ── */
[data-theme="dark"] ::-webkit-scrollbar { width: 4px; }
[data-theme="dark"] ::-webkit-scrollbar-track { background: transparent; }
[data-theme="dark"] ::-webkit-scrollbar-thumb { background: #333539; border-radius: 10px; }
[data-theme="dark"] ::-webkit-scrollbar-thumb:hover { background: #44474f; }

/* ── Sidebar ── */
[data-theme="dark"] .conversation-sidebar {
    background: var(--bg-deepest);
    border-right-color: var(--border-light);
}
[data-theme="dark"] .sidebar-header {
    background: var(--bg-deepest);
    border-bottom-color: var(--border-light);
}
[data-theme="dark"] .conversation-item {
    background: transparent;
    border-color: transparent;
}
[data-theme="dark"] .conversation-item:hover {
    background: var(--bg-hover);
    border-color: transparent;
}
[data-theme="dark"] .conversation-item.active {
    background: var(--bg-hover);
    border-color: transparent;
    border-left: 2px solid var(--primary-color);
}
[data-theme="dark"] .conversation-item.has-activity {
    border-color: var(--activity-color, var(--primary-color));
    box-shadow: 0 0 8px 2px color-mix(in srgb, var(--activity-color, var(--primary-color)) 35%, transparent);
}
@keyframes card-glow-dark {
    0%, 100% { box-shadow: 0 0 8px 2px color-mix(in srgb, var(--activity-color, var(--primary-color)) 30%, transparent); }
    50% { box-shadow: 0 0 14px 4px color-mix(in srgb, var(--activity-color, var(--primary-color)) 55%, transparent); }
}
@keyframes badgeGlow-dark {
    0%, 100% { box-shadow: 0 0 4px var(--badge-glow-color, #818cf8); }
    50% { box-shadow: 0 0 14px var(--badge-glow-color, #818cf8), 0 0 20px var(--badge-glow-color, #818cf8); }
}
[data-theme="dark"] .expert-badge-glow {
    animation-name: badgeGlow-dark;
}
[data-theme="dark"] .conversation-item.has-activity {
    animation-name: card-glow-dark;
}
[data-theme="dark"] .new-conversation-btn {
    background: var(--primary-dark);
}
[data-theme="dark"] .new-conversation-btn:hover {
    background: var(--primary-color);
}

/* ── Header & Tabs ── */
[data-theme="dark"] header {
    background: var(--bg-color);
    border-bottom-color: var(--border-light);
}
[data-theme="dark"] .container {
    background: var(--bg-color);
}
[data-theme="dark"] .tab-btn {
    color: var(--text-light);
}
[data-theme="dark"] .tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}
[data-theme="dark"] .tab-btn:hover:not(.active) {
    color: var(--text-primary);
}

/* ── Expert Selector ── */
[data-theme="dark"] .expert-selector-container {
    background: var(--bg-deepest);
    border-top-color: var(--border-light);
}
[data-theme="dark"] .expert-toggle {
    background: var(--bg-hover);
    border-color: var(--border-color);
}
[data-theme="dark"] .expert-toggle:has(input:checked) {
    background: var(--primary-light);
    border-color: var(--primary-color);
}

/* ── Chat Messages ── */
[data-theme="dark"] .message.user .message-content {
    border-radius: 12px 12px 4px 12px;
}
[data-theme="dark"] .message.bot .message-content,
[data-theme="dark"] .message.expert-message .message-content {
    background: var(--card-bg);
    border-color: var(--border-color);
    border-radius: 12px 12px 12px 4px;
}
[data-theme="dark"] .reference-badge {
    background: rgba(173, 198, 255, 0.1);
    border-color: rgba(173, 198, 255, 0.2);
}
[data-theme="dark"] .reference-badge:hover {
    background: rgba(173, 198, 255, 0.15);
}
[data-theme="dark"] .collaboration-indicator {
    background: rgba(173, 198, 255, 0.1);
    border-color: rgba(173, 198, 255, 0.2);
}
[data-theme="dark"] .message-text code {
    background: var(--bg-elevated);
    border-color: var(--border-color);
    color: #f0abfc;
}
[data-theme="dark"] .message-text pre {
    background: var(--bg-deepest);
    border-color: var(--border-color);
}
[data-theme="dark"] .message-text thead {
    background: var(--bg-elevated);
}
[data-theme="dark"] .message-text tbody tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.02);
}
[data-theme="dark"] .message-text tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.04);
}
[data-theme="dark"] .response-time,
[data-theme="dark"] .response-tokens {
    background: rgba(173, 198, 255, 0.08);
}
[data-theme="dark"] .live-timer {
    background: rgba(173, 198, 255, 0.08);
}

/* ── Message Action Buttons ── */
[data-theme="dark"] .message-reply-preview {
    background: var(--bg-elevated);
    border-color: var(--border-color);
}

/* ── Welcome Insight Bubble ── */
[data-theme="dark"] .message.bot.insight-message .message-content {
    border-left-color: #8b5cf6;
}

/* ── Welcome Screen ── */
[data-theme="dark"] .welcome-robot {
    filter: drop-shadow(0 10px 20px rgba(173, 198, 255, 0.3));
}
[data-theme="dark"] .welcome-robot:hover {
    filter: drop-shadow(0 15px 30px rgba(173, 198, 255, 0.5)) brightness(1.1);
}
[data-theme="dark"] .welcome-chip {
    background: var(--bg-elevated);
    border-color: var(--border-color);
    color: var(--text-primary);
}
[data-theme="dark"] .welcome-chip:hover {
    background: var(--primary-color);
    color: var(--text-on-primary);
    border-color: var(--primary-color);
}
[data-theme="dark"] .welcome-chip-primary {
    background: var(--primary-dark);
    color: white;
    border-color: var(--primary-dark);
}

/* Chip hover colors are now handled inline via expert_color JS handlers */

/* ── Chat Input ── */
[data-theme="dark"] .chat-input-container {
    background: var(--bg-color);
    border-top-color: var(--border-light);
}
[data-theme="dark"] #userInput {
    background: var(--bg-elevated);
    border-color: var(--border-color);
    color: var(--text-primary);
}
[data-theme="dark"] #userInput:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(173, 198, 255, 0.15);
}
[data-theme="dark"] #userInput::placeholder {
    color: var(--text-light);
}
[data-theme="dark"] .send-btn {
    background: var(--primary-dark);
    color: white;
}
[data-theme="dark"] .send-btn:hover {
    background: var(--primary-color);
    color: var(--text-on-primary);
}

/* ── Loading States ── */
[data-theme="dark"] .loading-container {
    background: var(--card-bg);
    border-color: var(--border-color);
}
[data-theme="dark"] .stop-button {
    background: var(--bg-elevated);
    border-color: var(--border-color);
    color: var(--text-secondary);
}
[data-theme="dark"] .stop-button:hover {
    background: var(--error-color);
    color: #111317;
    border-color: var(--error-color);
}

/* ── Pipeline Status ── */
[data-theme="dark"] .pipeline-status {
    background: linear-gradient(135deg, rgba(130, 217, 149, 0.12), rgba(130, 217, 149, 0.06));
    border-color: rgba(130, 217, 149, 0.3);
}
[data-theme="dark"] .pipeline-progress-bar {
    background: rgba(130, 217, 149, 0.2);
}
[data-theme="dark"] .pipeline-progress-fill {
    background: linear-gradient(90deg, var(--success-color), #a7f3d0);
}
[data-theme="dark"] .pipeline-progress-percent {
    color: var(--text-primary);
}
[data-theme="dark"] .pipeline-spinner {
    color: var(--success-color);
}
[data-theme="dark"] .chunk-progress-bar-wrapper {
    background: rgba(130, 217, 149, 0.2);
}
[data-theme="dark"] .chunk-progress-bar-fill {
    background: linear-gradient(90deg, var(--success-color), #a7f3d0);
}
[data-theme="dark"] .chunk-progress-bar-label {
    color: var(--text-primary);
}

/* ── Pipeline Confirmation ── */
[data-theme="dark"] .pipeline-confirmation {
    background: var(--card-bg);
    border-color: var(--border-color);
}
[data-theme="dark"] .pipeline-confirm-yes-btn {
    background: var(--success-color);
    color: #111317;
}
[data-theme="dark"] .pipeline-confirm-no-btn {
    background: var(--bg-elevated);
    color: var(--text-secondary);
    border-color: var(--border-color);
}

/* ── Pipeline Resume Indicator ── */
[data-theme="dark"] .pipeline-resume-indicator {
    background: var(--bg-elevated);
    border-bottom-color: var(--border-color);
    color: var(--text-secondary);
}

/* ── Documents Tab ── */
[data-theme="dark"] .documents-tab-panel {
    background: var(--bg-color);
}
[data-theme="dark"] .doc-subtab-bar {
    border-bottom-color: var(--border-light);
}
[data-theme="dark"] .doc-subtab {
    color: var(--text-secondary);
    border-color: var(--border-color);
}
[data-theme="dark"] .doc-subtab:hover {
    color: var(--text-primary);
    border-color: var(--text-light);
}
[data-theme="dark"] .doc-subtab.active {
    background: var(--primary-dark);
    color: white;
    border-color: var(--primary-dark);
}
[data-theme="dark"] .doc-upload-btn {
    background: var(--bg-elevated);
    border-color: var(--border-color);
    color: var(--text-secondary);
}
[data-theme="dark"] .doc-upload-btn:hover {
    background: var(--primary-dark);
    color: white;
    border-color: var(--primary-dark);
}

/* ── Document List / Table ── */
[data-theme="dark"] .document-item {
    background: var(--card-bg);
    border-color: var(--border-color);
}
[data-theme="dark"] .document-item:hover {
    background: var(--bg-hover);
}
[data-theme="dark"] .documents-table th {
    background: var(--bg-elevated);
    color: var(--text-light);
    border-bottom-color: var(--border-color);
}
[data-theme="dark"] .documents-table td {
    border-bottom-color: var(--border-light);
}
[data-theme="dark"] .documents-table tr:hover {
    background: var(--bg-hover);
}

/* ── Upload Progress ── */
[data-theme="dark"] .upload-progress {
    background: var(--card-bg);
}
[data-theme="dark"] .progress-bar {
    background: var(--bg-highest);
}
[data-theme="dark"] .progress-fill {
    background: var(--primary-color);
}
[data-theme="dark"] .extraction-banner {
    background: var(--card-bg);
    border-color: var(--border-color);
}

/* ── Sheet Index ── */
[data-theme="dark"] .sheet-index-section {
    background: var(--bg-color);
}
[data-theme="dark"] .sheet-filter-select {
    background: var(--bg-elevated);
    border-color: var(--border-color);
    color: var(--text-primary);
}
[data-theme="dark"] .sheet-view-pill {
    background: transparent;
    color: var(--text-light);
}
[data-theme="dark"] .sheet-view-pill.active {
    background: var(--bg-elevated);
    color: var(--primary-color);
}
[data-theme="dark"] .sheet-card {
    background: var(--card-bg);
    border-color: var(--border-color);
}
[data-theme="dark"] .sheet-card:hover {
    background: var(--bg-hover);
    border-color: var(--primary-color);
}
[data-theme="dark"] .sheet-list-row {
    background: var(--card-bg);
    border-color: var(--border-light);
}
[data-theme="dark"] .sheet-list-row:hover {
    background: var(--bg-hover);
}
[data-theme="dark"] .sheet-group-header {
    background: var(--bg-elevated);
    color: var(--text-secondary);
}
[data-theme="dark"] .sheet-ocr-progress {
    background: var(--bg-elevated);
}
[data-theme="dark"] .sheet-ocr-fill {
    background: var(--primary-color);
}

/* ── Sheet Detail Modal ── */
[data-theme="dark"] .sheet-detail-overlay {
    background: rgba(0, 0, 0, 0.8);
}
[data-theme="dark"] .sheet-detail-modal {
    background: var(--bg-color);
    border-color: var(--border-color);
}
[data-theme="dark"] .sheet-detail-side-panel {
    background: var(--card-bg);
    border-left-color: var(--border-color);
}
[data-theme="dark"] .sheet-detail-side-panel input,
[data-theme="dark"] .sheet-detail-side-panel select {
    background: var(--bg-elevated);
    border-color: var(--border-color);
    color: var(--text-primary);
}
[data-theme="dark"] .sheet-detail-side-panel input:focus,
[data-theme="dark"] .sheet-detail-side-panel select:focus {
    border-color: var(--primary-color);
}

/* ── Comparison Modal ── */
.comparison-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 1100;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.2s ease;
}
.comparison-modal {
    background: var(--card-bg);
    border-radius: 12px;
    width: 90vw;
    max-width: 800px;
    max-height: 85vh;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}
.comparison-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}
.comparison-modal-header h3 {
    font-size: 18px;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
}
.comparison-modal-close {
    background: transparent;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--text-secondary);
    padding: 4px 8px;
    border-radius: 6px;
    line-height: 1;
    transition: color 0.2s, background 0.2s;
}
.comparison-modal-close:hover {
    color: var(--text-primary);
    background: var(--bg-light);
}
.comparison-modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
    font-size: 14px;
    line-height: 1.65;
    color: var(--text-primary);
}
.comparison-modal-body h3 {
    font-size: 15px;
    font-weight: 600;
    margin: 20px 0 8px;
    color: var(--text-primary);
}
.comparison-modal-body h3:first-child {
    margin-top: 0;
}
.comparison-modal-body ul {
    margin: 4px 0 12px 20px;
    padding: 0;
}
.comparison-modal-body li {
    margin-bottom: 4px;
}

/* What Changed button in drawing index */
.what-changed-btn {
    font-size: 12px !important;
    padding: 4px 12px !important;
    margin-top: 6px;
    flex-shrink: 0;
}
.sheet-list-row .what-changed-btn {
    margin-top: 0;
    margin-left: auto;
    align-self: center;
}

[data-theme="dark"] .comparison-modal-overlay {
    background: rgba(0, 0, 0, 0.8);
}
[data-theme="dark"] .comparison-modal {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
}

/* ── Project Summary ── */
[data-theme="dark"] .project-summary-tab-panel {
    background: var(--bg-color);
}
[data-theme="dark"] .project-summary-card {
    background: var(--card-bg);
    border-color: var(--border-color);
}
[data-theme="dark"] .project-summary-row:hover {
    background: var(--bg-hover);
}
[data-theme="dark"] .project-summary-editable:focus {
    border-color: var(--primary-color);
    background: var(--bg-elevated);
}
[data-theme="dark"] .project-summary-conflicts {
    background: rgba(255, 186, 54, 0.08);
    border-color: rgba(255, 186, 54, 0.3);
}

/* ── Generated Documents ── */
[data-theme="dark"] .generated-tab-panel {
    background: var(--bg-color);
}
[data-theme="dark"] .generated-document-item {
    background: var(--card-bg);
    border-color: var(--border-color);
}
[data-theme="dark"] .generated-document-item:hover {
    background: var(--bg-hover);
}

/* ── Settings Modal ── */
[data-theme="dark"] .settings-modal-overlay {
    background: rgba(0, 0, 0, 0.75);
}
[data-theme="dark"] .settings-modal {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
}
[data-theme="dark"] .settings-modal-header {
    border-bottom-color: var(--border-light);
}
[data-theme="dark"] .settings-tab {
    color: var(--text-light);
}
[data-theme="dark"] .settings-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}
[data-theme="dark"] .profile-form input,
[data-theme="dark"] .profile-form select,
[data-theme="dark"] .profile-form textarea {
    background: var(--bg-elevated);
    border-color: var(--border-color);
    color: var(--text-primary);
}
[data-theme="dark"] .profile-form input:focus,
[data-theme="dark"] .profile-form select:focus,
[data-theme="dark"] .profile-form textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(173, 198, 255, 0.15);
}

/* ── Reference Documents ── */
[data-theme="dark"] .reference-expert-section {
    border-color: var(--border-color);
}
[data-theme="dark"] .reference-expert-header {
    background: var(--bg-elevated);
}
[data-theme="dark"] .reference-upload-area {
    background: var(--bg-hover);
    border-color: var(--border-color);
}
[data-theme="dark"] .reference-upload-area:hover {
    border-color: var(--primary-color);
    background: var(--bg-elevated);
}
[data-theme="dark"] .reference-item {
    background: var(--card-bg);
    border-color: var(--border-color);
}

/* ── Excel / Word Download Buttons ── */
[data-theme="dark"] .excel-download-btn {
    background: var(--success-color);
    border-color: var(--success-color);
    color: #111317;
}
[data-theme="dark"] .excel-notice {
    background: rgba(130, 217, 149, 0.1);
    border-color: rgba(130, 217, 149, 0.3);
    color: var(--success-color);
}
[data-theme="dark"] .word-download-btn {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: white;
}
[data-theme="dark"] .pdf-download-btn {
    background: #ef4444;
    border-color: #ef4444;
    color: white;
}
[data-theme="dark"] .word-notice {
    background: rgba(77, 142, 255, 0.1);
    border-color: rgba(77, 142, 255, 0.3);
    color: var(--primary-dark);
}

/* ── Excel Warning ── */
[data-theme="dark"] .excel-warning {
    color: var(--warning-color);
}

/* ── Capacity Warning ── */
[data-theme="dark"] .capacity-warning-banner {
    background: rgba(255, 186, 54, 0.1);
    border-color: rgba(255, 186, 54, 0.25);
    color: var(--warning-color);
}
[data-theme="dark"] .response-fallback {
    color: var(--warning-color);
}

/* ── Background Toast ── */
[data-theme="dark"] .background-completion-toast {
    background: var(--card-bg);
    border-color: var(--primary-color);
    color: var(--text-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

/* ── Misc Dark Overrides ── */
[data-theme="dark"] .excel-download-container,
[data-theme="dark"] .word-download-container,
[data-theme="dark"] .pdf-download-container {
    border-top-color: var(--border-color);
}
[data-theme="dark"] .tab-action-btn {
    color: var(--text-light);
}
[data-theme="dark"] .tab-action-btn:hover {
    color: var(--error-color);
}
[data-theme="dark"] .select-all-btn {
    color: var(--primary-color);
    border-color: var(--border-color);
}
[data-theme="dark"] .select-all-btn:hover {
    background: var(--primary-light);
}

/* ── Classification Badges (ensure readability) ── */
[data-theme="dark"] .doc-classify-badge {
    opacity: 0.9;
}

/* ── Theme Toggle Button ── */
.theme-toggle-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 8px 12px;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    transition: all 0.2s;
}
.theme-toggle-btn:hover {
    background: var(--bg-hover);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Dark mode error message override */
[data-theme="dark"] .chat-container .error-message,
[data-theme="dark"] .error-message:not(.no-conversations) {
    background: #451a1a;
    border-left-color: #991b1b;
    color: #fca5a5;
}

/* ── Research Mode Toggle ────────────────────────────────────────────── */

.research-toggle-group {
    display: flex;
    align-items: center;
    margin-left: auto;
    margin-right: 4px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 2px;
    gap: 2px;
}

.research-toggle-btn {
    padding: 4px 10px;
    border: none;
    border-radius: 4px;
    background: transparent;
    color: var(--text-tertiary);
    font-size: 11px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
    line-height: 1.4;
}

.research-toggle-btn:hover {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.research-toggle-btn.active[data-mode="none"] {
    background: var(--card-bg);
    color: var(--text-secondary);
    box-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.research-toggle-btn.active[data-mode="focused"] {
    background: #2563eb;
    color: #fff;
    box-shadow: 0 1px 3px rgba(37,99,235,0.4);
}

.research-toggle-btn.active[data-mode="open"] {
    background: #d97706;
    color: #fff;
    box-shadow: 0 1px 3px rgba(217,119,6,0.4);
}

/* Research mode divider in chat */
.research-divider {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 16px 0;
    padding: 0 16px;
}

.research-divider hr {
    flex: 1;
    border: none;
    border-top: 1px dashed var(--border-color);
    margin: 0;
}

.research-divider-label {
    font-size: 11px;
    font-weight: 500;
    color: var(--text-tertiary);
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.research-divider-label.mode-focused {
    color: #2563eb;
}

.research-divider-label.mode-open {
    color: #d97706;
}

/* Citation sources section at bottom of research messages */
.citation-sources {
    margin-top: 12px;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
}

.citation-sources-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    background: none;
    border: none;
    padding: 4px 0;
}

.citation-sources-toggle:hover {
    color: var(--primary-color);
}

.citation-sources-toggle svg {
    transition: transform 0.2s;
}

.citation-sources-toggle.expanded svg {
    transform: rotate(90deg);
}

.citation-sources-list {
    display: none;
    margin-top: 6px;
    padding-left: 4px;
}

.citation-sources-list.show {
    display: block;
}

.citation-source-item {
    font-size: 12px;
    color: var(--text-tertiary);
    padding: 3px 0;
    line-height: 1.4;
}

.citation-source-item a {
    color: var(--primary-color);
    text-decoration: none;
}

.citation-source-item a:hover {
    text-decoration: underline;
}

/* Open mode cost warning tooltip */
.research-open-warning {
    position: fixed;
    top: 60px;
    right: 20px;
    background: #92400e;
    color: #fef3c7;
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 12px;
    line-height: 1.4;
    max-width: 320px;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
    animation: fadeInOut 5s ease forwards;
}

@keyframes fadeInOut {
    0% { opacity: 0; transform: translateY(-8px); }
    10% { opacity: 1; transform: translateY(0); }
    80% { opacity: 1; }
    100% { opacity: 0; transform: translateY(-8px); }
}

/* Responsive: hide labels on small screens */
@media (max-width: 900px) {
    .research-toggle-btn {
        font-size: 10px;
        padding: 4px 6px;
    }
}

/* ── Research Domains Management (Settings modal) ─────────────────────── */

.domain-add-form {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 12px;
    padding: 10px;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.domain-input,
.domain-desc-input,
.domain-tags-input {
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--card-bg);
    color: var(--text-primary);
    font-size: 12px;
}

.domain-input {
    font-weight: 600;
}

.domain-add-row {
    display: flex;
    gap: 6px;
    align-items: center;
}

.domain-priority-input {
    width: 60px;
    padding: 6px 8px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: var(--card-bg);
    color: var(--text-primary);
    font-size: 12px;
    text-align: center;
}

.domain-tags-input {
    flex: 1;
}

.domain-add-btn {
    padding: 6px 14px;
    border: none;
    border-radius: 6px;
    background: var(--primary-color);
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    white-space: nowrap;
}

.domain-add-btn:hover {
    opacity: 0.9;
}

.domain-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.domain-empty {
    font-size: 12px;
    color: var(--text-tertiary);
    padding: 8px 0;
    font-style: italic;
}

.domain-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 8px 10px;
    border-radius: 6px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
}

.domain-item-main {
    flex: 1;
    min-width: 0;
}

.domain-item-header {
    display: flex;
    align-items: center;
    gap: 8px;
}

.domain-name {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
}

.domain-description {
    font-size: 11px;
    color: var(--text-secondary);
    margin-top: 2px;
    line-height: 1.3;
}

.domain-priority-badge {
    font-size: 10px;
    font-weight: 600;
    background: var(--primary-color);
    color: #fff;
    padding: 1px 6px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

.domain-tags-row {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 4px;
}

.domain-tag {
    font-size: 10px;
    padding: 1px 6px;
    border-radius: 4px;
    background: var(--bg-hover);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.domain-count-badge {
    font-size: 10px;
    font-weight: 600;
    color: var(--text-tertiary);
    margin-left: 4px;
}

.domain-delete-btn {
    background: none;
    border: none;
    color: var(--text-tertiary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    flex-shrink: 0;
    margin-top: 2px;
}

.domain-delete-btn:hover {
    color: #dc3545;
    background: rgba(220, 53, 69, 0.1);
}

/* ══════════════════════════════════════════════════════════════
   MOBILE-ADAPTIVE LAYOUT
   ══════════════════════════════════════════════════════════════ */

/* ── Hamburger toggle (hidden on desktop) ── */
.sidebar-toggle-btn {
    display: none;
    background: transparent;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px;
    cursor: pointer;
    color: var(--text-secondary);
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background 0.2s, color 0.2s;
}
.sidebar-toggle-btn:hover {
    background: var(--bg-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* ── Sidebar overlay (hidden on desktop) ── */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
    opacity: 0;
    transition: opacity 0.3s ease;
}
.sidebar-overlay.active {
    display: block;
    opacity: 1;
}
[data-theme="dark"] .sidebar-overlay.active {
    background: rgba(0, 0, 0, 0.7);
}

/* ═══════════════════════════════════════════
   Breakpoint: 768px — Tablet / Small laptop
   ═══════════════════════════════════════════ */
@media (max-width: 768px) {

    /* ── Show hamburger button ── */
    .sidebar-toggle-btn {
        display: flex;
    }

    /* ── Sidebar: fixed off-screen overlay ── */
    .conversation-sidebar {
        position: fixed;
        left: -300px;
        top: 0;
        bottom: 0;
        z-index: 100;
        width: 300px;
        transition: left 0.3s ease;
        box-shadow: none;
    }
    .conversation-sidebar.open {
        left: 0;
        box-shadow: 4px 0 24px rgba(0, 0, 0, 0.25);
    }

    /* ── Header ── */
    header {
        padding: 0 12px;
    }
    .logo h1 {
        font-size: 18px;
    }
    .subtitle-full {
        display: none;
    }
    .subtitle-short {
        display: inline;
    }
    .header-actions {
        margin-left: auto;
    }

    /* ── Tab bar: icon-only ── */
    .tab-btn span {
        display: none;
    }
    .tab-btn {
        padding: 10px 12px;
    }
    .tab-buttons {
        padding: 0 8px;
    }

    /* ── Research toggle: compact, flush right ── */
    .research-toggle-group {
        margin-left: auto;
        margin-right: 0;
    }
    .research-toggle-btn {
        font-size: 9px;
        padding: 4px 5px;
    }
    .tab-action-btn {
        padding: 10px 6px;
    }

    /* ── Expert indicator chips: compact ── */
    .expert-indicator {
        padding: 3px 8px;
        font-size: 10px;
        gap: 4px;
    }
    .expert-indicator::before {
        width: 6px;
        height: 6px;
    }
    .expert-selector-container {
        padding: 4px 12px;
    }

    /* ── Chat input area ── */
    .chat-input-container {
        padding: 12px 16px;
    }
    #userInput {
        padding: 12px 14px;
        min-height: 48px;
    }
    .chat-container {
        padding: 16px 12px;
    }

    /* ── Message footer: stack metadata above buttons ── */
    .message-footer {
        flex-direction: column;
        align-items: flex-end;
        gap: 8px;
    }
    .message-time {
        align-self: flex-start;
    }

    /* ── Welcome message ── */
    .welcome-message {
        padding: 32px 12px;
    }
    .welcome-message h2 {
        font-size: 22px;
    }

    /* ── Message bubbles ── */
    .message-content {
        max-width: 90%;
    }

    /* ── Drawing Index filter bar: stack ── */
    .sheet-index-filters {
        flex-direction: column;
        align-items: stretch;
    }
    .sheet-index-filters .doc-filter-search {
        width: 100%;
    }
    .sheet-index-filters .sheet-filter-select {
        width: 100%;
    }
    .sheet-filter-controls-row {
        align-self: flex-start;
    }
    .sheet-refresh-ocr-btn {
        font-size: 0;
        gap: 0;
        padding: 6px;
    }
    .sheet-refresh-ocr-btn svg {
        width: 16px;
        height: 16px;
    }

    /* ── Drawing Index grid: smaller min column ── */
    .sheet-index-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 6px;
        padding: 6px;
    }

    /* ── Drawing Index list: tighter ── */
    .sheet-list-row {
        gap: 10px;
        padding: 6px 6px;
    }
    .sheet-list-thumb {
        width: 80px;
    }

    /* ── Uploaded Docs filter bar: stack ── */
    .doc-filters {
        flex-direction: column;
        align-items: stretch;
    }
    .doc-filters .doc-filter-search,
    .doc-filters .sheet-filter-select {
        width: 100%;
    }

    /* ── Document items: tighter ── */
    .document-item {
        padding: 6px 8px;
    }

    /* ── Action buttons: touch-friendly ── */
    .doc-action-btn,
    .sheet-reply-btn,
    .what-changed-btn {
        min-height: 36px;
    }

    /* ── Project Summary: reduce label width ── */
    .project-summary-row-editable .project-summary-label {
        min-width: 110px;
    }
    .project-summary-tab-panel {
        padding: 16px 12px;
    }

    /* ── Doc subtab bar ── */
    .doc-subtab-bar {
        flex-wrap: wrap;
    }

    /* ── Generated documents ── */
    .generated-tab-panel {
        padding: 16px 12px;
    }
    .generated-doc-filename {
        white-space: normal;
        word-break: break-all;
    }

    /* ── Settings modal: wider ── */
    .settings-modal {
        width: 95%;
    }
}

/* ═══════════════════════════════════════════
   Breakpoint: 480px — Phone portrait
   ═══════════════════════════════════════════ */
@media (max-width: 480px) {

    /* ── Header: tighter ── */
    .header-content {
        gap: 8px;
    }
    .logo h1 {
        font-size: 16px;
    }
    .subtitle-full {
        display: none;
    }
    .subtitle-short {
        display: inline;
    }
    .header-icon-btn {
        padding: 6px 8px;
    }

    /* ── Tab bar: even tighter ── */
    .tab-btn {
        padding: 8px 8px;
    }
    .tab-btn svg {
        width: 14px;
        height: 14px;
    }

    /* ── Research toggle: abbreviate further ── */
    .research-toggle-btn {
        font-size: 9px;
        padding: 3px 5px;
    }

    /* ── Expert chips: dot-only ── */
    .expert-indicator {
        font-size: 0;
        padding: 6px;
        gap: 0;
        border-radius: 50%;
        min-width: 22px;
        min-height: 22px;
        justify-content: center;
    }
    .expert-indicator::before {
        width: 8px;
        height: 8px;
    }
    .expert-indicator-bar {
        gap: 4px;
    }

    /* ── Chat input ── */
    .chat-input-container {
        padding: 10px 12px;
    }
    #userInput {
        font-size: 14px;
    }

    /* ── Drawing Index grid: force 2 columns ── */
    .sheet-index-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* ── Drawing Index list: stack details ── */
    .sheet-list-row {
        flex-wrap: wrap;
        gap: 6px;
    }
    .sheet-list-thumb {
        width: 60px;
    }
    .sheet-list-actions {
        margin-left: 0;
        width: 100%;
        justify-content: flex-end;
    }

    /* ── Project Summary: stack label/value, centered ── */
    .project-summary-row-editable {
        flex-direction: column;
        gap: 4px;
        align-items: center;
        text-align: center;
    }
    .project-summary-row-editable .project-summary-label {
        min-width: unset;
    }
    .project-summary-value-wrap {
        width: 100%;
        justify-content: center;
    }

    /* ── Settings modal: full-screen ── */
    .settings-modal {
        width: 100%;
        max-width: 100%;
        height: 100vh;
        max-height: 100vh;
        border-radius: 0;
    }
    .settings-tab {
        padding: 8px 10px;
        font-size: 12px;
    }
    .profile-section {
        padding: 16px 12px;
    }
    .reference-section {
        padding: 16px 12px;
    }

    /* ── Welcome chips: already stacked at 600px, tighten ── */
    .welcome-message h2 {
        font-size: 20px;
    }

    /* ── Generated doc filenames: break long names ── */
    .generated-doc-filename {
        font-size: 12px;
    }

    /* ── Action buttons: ensure touch targets ── */
    .doc-action-btn,
    .sheet-reply-btn,
    .what-changed-btn,
    .btn-sm {
        min-height: 40px;
        min-width: 40px;
    }
}