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

/* iOS safe area support */
@supports (padding: max(0px)) {
    .top-bar {
        padding-left: max(24px, env(safe-area-inset-left));
        padding-right: max(24px, env(safe-area-inset-right));
    }

    .container {
        padding-left: max(24px, env(safe-area-inset-left));
        padding-right: max(24px, env(safe-area-inset-right));
        padding-bottom: max(24px, env(safe-area-inset-bottom));
    }

    .side-panel {
        padding-bottom: env(safe-area-inset-bottom);
    }

    @media (max-width: 700px) {
        .top-bar {
            padding-left: max(12px, env(safe-area-inset-left));
            padding-right: max(12px, env(safe-area-inset-right));
        }

        .container {
            padding-left: max(12px, env(safe-area-inset-left));
            padding-right: max(12px, env(safe-area-inset-right));
        }
    }
}

:root {
    --black: #000000;
    --white: #ffffff;
    --gray-50: #fafafa;
    --gray-100: #f4f4f5;
    --gray-200: #e4e4e7;
    --gray-300: #d4d4d8;
    --gray-400: #a1a1aa;
    --gray-500: #71717a;
    --gray-600: #52525b;
    --gray-700: #3f3f46;
    --gray-800: #27272a;
    --gray-900: #18181b;

    --primary: var(--black);
    --primary-dark: var(--black);
    --surface: var(--white);
    --background: var(--gray-50);
    --on-surface: var(--gray-900);
    --on-surface-secondary: var(--gray-500);
    --border: var(--gray-200);
    --border-strong: var(--gray-300);

    --accent: rgb(196, 50, 36);
    --accent-subtle: rgba(196, 50, 36, 0.08);
    --selected-bg: rgb(29, 29, 29);

    --shadow-1: none;
    --shadow-2: none;
    --shadow-3: none;
    --radius: 0;
    --radius-lg: 0;

    --transition-fast: 120ms ease;
    --transition: 200ms ease;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--background);
    color: var(--on-surface);
    line-height: 1.5;
    font-size: 14px;
    letter-spacing: -0.01em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Monospace font for code elements */
code, pre, .mono, .compact-num, .result-meta, .comment-date, .comment-author,
#search-info, .stat-value, .timeline-bar-tooltip, .domain-facet-count {
    font-family: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
    font-size: 0.9em;
    letter-spacing: -0.02em;
}

/* Selection */
::selection {
    background: var(--black);
    color: var(--white);
}

::-moz-selection {
    background: var(--black);
    color: var(--white);
}

/* Top Search Bar */
.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--surface);
    padding: 0 24px;
    height: 56px;
    border-bottom: 1px solid var(--border);
    z-index: 100;
    display: flex;
    align-items: center;
    gap: 16px;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    color: var(--gray-500);
    flex-shrink: 0;
    transition: opacity var(--transition-fast);
}

.logo:hover {
    opacity: 0.6;
}

.logo svg {
    width: 20px;
    height: 20px;
}

.menu-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 36px;
    height: 36px;
    background: none;
    border: 1px solid var(--border);
    cursor: pointer;
    transition: all var(--transition-fast);
    order: 3;
    flex-shrink: 0;
}

.menu-toggle:hover {
    background: var(--black);
    border-color: var(--black);
}

.menu-toggle:hover span {
    background: var(--white);
}

.menu-toggle span {
    display: block;
    width: 14px;
    height: 1.5px;
    background: var(--on-surface);
    margin: 2px 0;
    transition: background var(--transition-fast);
}

/* Side Menu */
.side-menu {
    position: fixed;
    top: 0;
    right: -280px;
    width: 280px;
    height: 100vh;
    background: var(--surface);
    padding: 72px 0 24px;
    z-index: 99;
    transition: right 0.2s ease;
    border-left: 1px solid var(--border);
}

.side-menu.open {
    right: 0;
}

@media (max-width: 700px) {
    .side-menu {
        width: 100%;
        right: -100%;
        padding-top: 60px;
    }
}

.menu-item {
    display: flex;
    align-items: center;
    width: 100%;
    padding: 12px 20px;
    border: none;
    border-bottom: 1px solid var(--border);
    background: none;
    color: var(--on-surface-secondary);
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.menu-item:hover {
    background: var(--gray-50);
    color: var(--on-surface);
}

.menu-item.active {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

.menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.4);
    backdrop-filter: blur(2px);
    z-index: 98;
    opacity: 0;
    transition: opacity 0.2s;
}

.menu-overlay.show {
    display: block;
    opacity: 1;
}

@media (max-width: 700px) {
    .menu-item {
        padding: 16px 20px;
        font-size: 14px;
    }
}

/* Main Container */
.container {
    width: 100%;
    padding: 72px 24px 24px;
    max-width: 1800px;
    margin: 0 auto;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* Search Box - fills remaining space after fixed-width right side */
.search-box {
    display: flex;
    gap: 8px;
    flex: 1;
    order: 1;
}

#search-input {
    flex: 1;
    padding: 0 12px;
    height: 36px;
    font-size: 13px;
    border: 1px solid var(--border);
    outline: none;
    background: var(--surface);
    transition: all var(--transition-fast);
    font-family: inherit;
}

#search-input:focus {
    border-color: var(--black);
}

#search-input::placeholder {
    color: var(--gray-400);
}

#search-btn {
    padding: 0 20px;
    height: 36px;
    background: var(--accent);
    color: var(--white);
    border: 1px solid var(--accent);
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

#search-btn:hover {
    background: var(--white);
    color: var(--accent);
    border-color: var(--accent);
}
#search-btn.loading {
    color: transparent;
    pointer-events: none;
    position: relative;
}
#search-btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 14px;
    height: 14px;
    margin-top: -7px;
    margin-left: -7px;
    border: 2px solid rgba(255,255,255,0.4);
    border-top-color: #fff;
    border-radius: 50%;
    box-sizing: border-box;
    animation: summarize-spin 0.7s linear infinite;
}

.search-options {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--on-surface-secondary);
    font-size: 12px;
    order: 2;
    flex: 0 0 700px;
    justify-content: flex-end;
}

.search-options select {
    padding: 0 8px;
    height: 32px;
    border: 1px solid var(--border);
    background: var(--surface);
    font-size: 11px;
    font-family: 'JetBrains Mono', monospace;
    color: var(--on-surface);
    cursor: pointer;
    outline: none;
    transition: border-color var(--transition-fast);
}

.search-options select:hover {
    border-color: var(--gray-400);
}

.search-options select:focus {
    border-color: var(--black);
}

.search-options label {
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.type-filter {
    display: flex;
    gap: 0;
}

.type-btn {
    padding: 6px 12px;
    border: 1px solid var(--border);
    margin-left: -1px;
    background: var(--surface);
    color: var(--on-surface-secondary);
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.type-btn:first-child {
    margin-left: 0;
}

.type-btn:hover {
    background: var(--gray-100);
    color: var(--on-surface);
    z-index: 1;
}

.type-btn.active {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
    z-index: 2;
}

#search-info {
    white-space: nowrap;
    font-size: 11px;
    color: var(--gray-500);
}

#search-info strong {
    color: var(--on-surface);
    font-weight: 600;
}

/* Results Grid */
#search-results {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    transition: grid-template-columns 0.2s ease;
}

#search-results:has(.result-card) {
    border: 1px solid var(--border);
    padding: 1px 0 0 1px;
}

@media (max-width: 1200px) {
    #search-results {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 700px) {
    #search-results {
        grid-template-columns: 1fr;
    }
}

/* Result Cards */
.result-card {
    background: var(--surface);
    padding: 12px 16px 12px 8px;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    scroll-margin-top: 70px;
    flex-direction: row;
    align-items: flex-start;
    gap: 8px;
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--border);
    margin-top: -1px;
    margin-left: -1px;
}

.result-num {
    font-family: 'JetBrains Mono', monospace;
    font-size: 11px;
    font-weight: 500;
    color: var(--gray-400);
    min-width: 20px;
    text-align: center;
    flex-shrink: 0;
    padding-top: 2px;
}

.result-card.active .result-num {
    color: var(--gray-300);
}

.result-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.result-card:hover {
    background: var(--gray-50);
}

.result-card.active {
    background: var(--selected-bg);
    color: var(--white);
    border-color: var(--selected-bg);
}

.result-card.active .result-title {
    color: var(--white);
}

.result-card.active .result-content {
    color: var(--gray-300);
}

u.user-underline {
    text-decoration: underline;
    text-decoration-color: var(--accent, #c43224);
    text-underline-offset: 2px;
    cursor: default;
}

/* h = fluorescent highlight, like a Stabilo yellow marker */
mark.hl-highlight {
    background: #BFEE44 !important;
    color: #111 !important;
    border-radius: 2px;
    padding: 0 1px;
    cursor: default;
}

mark.hl-important {
    background: #FF8080 !important;
    color: inherit !important;
    border-radius: 2px;
    padding: 0 1px;
    cursor: default;
}

/* Annotation legend at the bottom of the side panel */
.panel-legend {
    padding: 8px 16px;
    border-top: 1px solid var(--border);
    background: var(--gray-50);
    font-size: 11px;
    color: var(--on-surface-secondary);
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
    flex-shrink: 0;
}
.panel-legend-label {
    color: var(--on-surface-secondary);
    opacity: 0.7;
    margin-right: 2px;
}
.panel-legend-item {
    display: flex;
    align-items: center;
    gap: 4px;
    white-space: nowrap;
}
.panel-legend kbd {
    font-family: var(--font-mono);
    font-size: 10px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-bottom-width: 2px;
    border-radius: 3px;
    padding: 1px 5px;
    color: var(--on-surface-primary);
    line-height: 1.4;
}
.clear-annot-btn {
    margin-left: auto;
    font-size: 10px;
    font-family: var(--font-mono);
    padding: 2px 7px;
    background: none;
    border: 1px solid var(--border);
    border-radius: 3px;
    color: var(--on-surface-secondary);
    cursor: pointer;
    opacity: 0.7;
}
.clear-annot-btn:hover {
    opacity: 1;
    border-color: var(--error, #e53e3e);
    color: var(--error, #e53e3e);
}

.result-card.active .result-meta {
    color: var(--gray-400);
}

.result-card.comment {
    border-left: 2px solid var(--accent);
}

.result-card.comment.active {
    border-left-color: var(--white);
}

.result-header {
    margin-bottom: 6px;
}

.result-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--on-surface);
    margin: 0 0 6px 0;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    overflow-wrap: break-word;
    word-break: break-word;
    letter-spacing: -0.01em;
}

.result-meta {
    font-size: 10px;
    color: var(--gray-500);
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.result-content {
    color: var(--gray-600);
    font-size: 12px;
    line-height: 1.6;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    overflow-wrap: break-word;
    word-break: break-word;
}

.result-content a {
    color: var(--black);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.result-content a:hover {
    text-decoration-thickness: 2px;
}

.result-card.active .result-content a {
    color: var(--white);
}

/* Forms */
#add-form {
    background: var(--surface);
    padding: 24px;
    border: 1px solid var(--border);
    max-width: 600px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    font-family: 'JetBrains Mono', monospace;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    font-size: 13px;
    font-family: inherit;
    outline: none;
    transition: all var(--transition-fast);
    background: var(--surface);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--black);
}

#add-form button {
    padding: 12px 24px;
    background: var(--black);
    color: var(--white);
    border: 1px solid var(--black);
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--transition-fast);
}

#add-form button:hover {
    background: var(--white);
    color: var(--black);
}

#add-result {
    margin-top: 16px;
    padding: 12px 16px;
    font-size: 12px;
    font-weight: 500;
    border: 1px solid;
}

#add-result.success {
    background: var(--white);
    border-color: var(--black);
    color: var(--black);
}

#add-result.error {
    background: var(--white);
    border-color: var(--black);
    color: var(--black);
}

/* Stats */
#stats-display {
    background: var(--surface);
    padding: 0;
    border: 1px solid var(--border);
    max-width: 400px;
}

.stat-row {
    display: flex;
    justify-content: space-between;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
}

.stat-row:last-child {
    border-bottom: none;
}

.stat-label {
    color: var(--gray-500);
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: 'JetBrains Mono', monospace;
}

.stat-value {
    font-weight: 600;
    color: var(--on-surface);
    font-size: 13px;
    font-family: 'JetBrains Mono', monospace;
}

#refresh-stats {
    padding: 8px 16px;
    background: var(--surface);
    color: var(--on-surface);
    border: 1px solid var(--border);
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: 16px;
}

#refresh-stats:hover {
    background: var(--black);
    border-color: var(--black);
    color: var(--white);
}

.admin-actions {
    margin-top: 24px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
}

.admin-actions h3 {
    margin-bottom: 16px;
    color: var(--gray-500);
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: 'JetBrains Mono', monospace;
}

.admin-actions button {
    padding: 8px 16px;
    margin-right: 8px;
    margin-bottom: 8px;
    background: var(--surface);
    color: var(--on-surface);
    border: 1px solid var(--border);
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.admin-actions button:hover {
    background: var(--black);
    border-color: var(--black);
    color: var(--white);
}

#admin-result {
    margin-top: 16px;
    padding: 12px 16px;
    font-size: 12px;
    border: 1px solid var(--border);
}

/* Pagination */
#pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0;
    margin-top: 32px;
    padding: 16px 0;
}

#pagination.hidden {
    display: none;
}

.page-btn {
    min-width: 36px;
    height: 36px;
    padding: 0 12px;
    border: 1px solid var(--border);
    margin-left: -1px;
    background: var(--surface);
    cursor: pointer;
    font-size: 12px;
    font-family: 'JetBrains Mono', monospace;
    color: var(--on-surface);
    transition: all var(--transition-fast);
}

.page-btn:first-child {
    margin-left: 0;
}

.page-btn:hover:not(:disabled) {
    background: var(--gray-100);
    z-index: 1;
}

.page-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.page-btn.active {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
    z-index: 2;
}

.page-info {
    color: var(--gray-500);
    font-size: 11px;
    font-family: 'JetBrains Mono', monospace;
    padding: 0 12px;
    letter-spacing: 0.02em;
}

.page-ellipsis {
    color: var(--gray-400);
    font-size: 14px;
    padding: 0 4px;
    display: flex;
    align-items: center;
}

/* Loading */
.loading {
    text-align: center;
    padding: 48px;
    color: var(--gray-500);
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-family: 'JetBrains Mono', monospace;
}

.loading::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 1px solid var(--gray-300);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-left: 12px;
    vertical-align: middle;
}

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

/* Error */
.error-message {
    background: var(--white);
    color: var(--black);
    padding: 16px 20px;
    border: 1px solid var(--black);
    text-align: center;
    font-size: 12px;
    font-weight: 500;
}

/* Search highlighting */
mark {
    background: rgba(196, 50, 36, 0.1);
    color: inherit;
    padding: 1px 3px;
}

mark.partial-right {
    padding-right: 0;
}

.result-card.active mark,
.result-card.active .result-content mark,
.result-card.active .result-title mark {
    background: transparent;
    color: rgb(255, 120, 100);
}

/* Side Panel - takes 2/3 width, results get 1/3 */
.side-panel {
    position: fixed;
    top: 56px;
    right: 0;
    width: calc(66.666% - 16px);
    height: calc(100vh - 56px);
    background: var(--surface);
    z-index: 50;
    transform: translateX(100%);
    transition: transform 0.2s ease;
    display: flex;
    flex-direction: column;
    border-left: 1px solid var(--border);
}

.side-panel.open {
    transform: translateX(0);
}

/* When panel is open, show 1 column of results on the left */
body.panel-open #search-results {
    grid-template-columns: 1fr;
}

body.panel-open .compact-results {
    grid-template-columns: 1fr;
}

body.panel-open .container {
    padding-right: calc(66.666% + 8px);
}

@media (max-width: 1200px) {
    .side-panel {
        width: 60%;
    }

    body.panel-open .container {
        padding-right: calc(60% + 8px);
    }
}

@media (max-width: 800px) {
    .side-panel {
        width: 100%;
        top: 56px;
        height: calc(100vh - 56px);
    }

    body.panel-open .container {
        padding-right: 24px;
    }
}

@media (max-width: 600px) {
    .side-panel {
        top: 56px;
        height: calc(100vh - 56px);
    }
}

.side-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 16px;
    height: 48px;
    border-bottom: 1px solid var(--border);
    background: var(--surface);
    flex-shrink: 0;
}

.side-panel-tabs {
    display: flex;
    align-items: center;
    gap: 4px;
    flex: 1;
    overflow: hidden;
}

.panel-tab {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border: 1px solid var(--border);
    margin-left: -1px;
    background: var(--surface);
    cursor: pointer;
    font-size: 11px;
    font-weight: 500;
    max-width: 300px;
    transition: all var(--transition-fast);
    color: var(--gray-500);
    overflow: hidden;
}

.panel-tab:first-child {
    margin-left: 0;
}

.panel-tab:hover {
    background: var(--gray-50);
    color: var(--on-surface);
    z-index: 1;
}

.panel-tab.active {
    background: var(--selected-bg);
    color: var(--white);
    border-color: var(--selected-bg);
    z-index: 2;
}

.panel-tab-title {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    min-width: 0;
}

.panel-tab-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    font-size: 10px;
    opacity: 0.6;
    flex-shrink: 0;
    margin-left: 4px;
    transition: all var(--transition-fast);
}

.panel-tab-close:hover {
    opacity: 1;
}

.panel-tab.active .panel-tab-close:hover {
    opacity: 1;
}

.side-panel-actions {
    display: flex;
    gap: 8px;
}

.panel-btn {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    background: var(--surface);
    cursor: pointer;
    font-size: 14px;
    color: var(--gray-500);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.panel-btn:hover {
    background: var(--black);
    border-color: var(--black);
    color: var(--white);
}

.side-panel-title {
    padding: 12px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--on-surface);
    border-bottom: 1px solid var(--border);
    background: var(--surface);
    flex-shrink: 0;
    line-height: 1.4;
    overflow-wrap: break-word;
    word-break: break-word;
}

.side-panel-title a {
    color: var(--on-surface);
    text-decoration: none;
}

.side-panel-title a:hover {
    text-decoration: underline;
}

.side-panel-loading {
    height: 3px;
    background: var(--border);
    overflow: hidden;
    flex-shrink: 0;
    display: none;
}

.side-panel-loading.active {
    display: block;
}

.loading-bar {
    height: 100%;
    width: 30%;
    background: var(--accent);
    animation: loadingSlide 1s ease-in-out infinite;
}

@keyframes loadingSlide {
    0% {
        transform: translateX(-100%);
    }
    50% {
        transform: translateX(250%);
    }
    100% {
        transform: translateX(-100%);
    }
}

.panel-content-container {
    flex: 1;
    position: relative;
    overflow: hidden;
}

.tab-content-frame {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: none;
}

.tab-content-frame.active {
    display: block;
}

.tab-content-frame iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: white;
}

.tab-content-frame iframe[style*="display: none"] {
    pointer-events: none;
}

.tab-content-frame .tab-fallback {
    width: 100%;
    height: 100%;
    padding: 24px;
    user-select: text;
    overflow-y: auto;
    line-height: 1.7;
    font-size: 14px;
    box-sizing: border-box;
    display: none;
}

.tab-content-frame .tab-fallback.show {
    display: block;
}

.side-panel-fallback .fallback-notice {
    background: var(--gray-50);
    color: var(--gray-600);
    padding: 12px 16px;
    margin-bottom: 16px;
    font-size: 11px;
    border: 1px solid var(--border);
}

.side-panel-fallback .fallback-notice a {
    color: var(--black);
    font-weight: 500;
    text-decoration: underline;
}

/* OpenGraph Preview */
.og-preview {
    background: var(--surface);
    overflow: hidden;
    border: 1px solid var(--border);
}

.og-image {
    width: 100%;
    max-height: 300px;
    overflow: hidden;
    background: var(--gray-100);
}

.og-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
}

.og-content {
    padding: 16px;
}

.og-site {
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.og-title {
    font-size: 16px;
    font-weight: 600;
    margin: 0 0 8px 0;
    line-height: 1.3;
    overflow-wrap: break-word;
    word-break: break-word;
    letter-spacing: -0.01em;
}

.og-title a {
    color: var(--on-surface);
    text-decoration: none;
}

.og-title a:hover {
    text-decoration: underline;
}

.og-description {
    color: var(--gray-600);
    font-size: 13px;
    line-height: 1.6;
    margin: 0 0 12px 0;
}

.og-link {
    font-size: 11px;
    font-family: 'JetBrains Mono', monospace;
    color: var(--gray-400);
    text-decoration: none;
    word-break: break-all;
}

.og-link:hover {
    color: var(--black);
    text-decoration: underline;
}

.og-original-content {
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid var(--border);
}

.og-original-content summary {
    cursor: pointer;
    color: var(--gray-500);
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.og-original-content summary:hover {
    color: var(--black);
}

/* Panel overlay - hidden on desktop, shown on mobile */
.panel-overlay {
    display: none;
}

@media (max-width: 800px) {
    .panel-overlay {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0,0,0,0.5);
        z-index: 49;
    }

    .panel-overlay.show {
        display: block;
    }
}

@media (max-width: 1200px) {
    .side-panel {
        width: 70%;
    }
}

@media (max-width: 800px) {
    .side-panel {
        width: 100%;
    }
}

/* Responsive - Tablet */
@media (max-width: 900px) {
    .search-options {
        flex: 0 0 auto;
        gap: 4px;
    }

    .search-options select {
        padding: 0 4px;
    }

    #search-info {
        display: none;
    }

    .container {
        padding: 72px 16px 16px;
    }
}

/* Responsive - Mobile */
@media (max-width: 700px) {
    .top-bar {
        flex-wrap: wrap;
        height: auto;
        padding: 8px 12px;
        gap: 8px;
    }

    .logo {
        order: 0;
    }

    .search-box {
        order: 1;
        flex: 1 1 calc(100% - 100px);
        min-width: 0;
    }

    .menu-toggle {
        order: 2;
    }

    .search-options {
        order: 3;
        flex: 1 1 100%;
        justify-content: flex-start;
        gap: 4px;
        padding-top: 4px;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .search-options::-webkit-scrollbar {
        display: none;
    }

    .type-btn {
        padding: 6px 10px;
        font-size: 10px;
    }

    .search-options select {
        height: 28px;
        font-size: 10px;
        flex-shrink: 0;
    }

    #search-input {
        height: 40px;
        font-size: 16px; /* Prevents iOS zoom */
    }

    #search-btn {
        height: 40px;
        padding: 0 14px;
        font-size: 11px;
    }

    .container {
        padding: 120px 12px 12px;
    }

    /* Results cards */
    .result-card {
        padding: 12px;
    }

    .result-num {
        min-width: 16px;
        font-size: 10px;
    }

    .result-title {
        font-size: 14px;
        -webkit-line-clamp: 3;
    }

    .result-content {
        font-size: 13px;
        -webkit-line-clamp: 4;
    }

    .result-meta {
        font-size: 9px;
    }

    /* Compact results */
    .compact-row {
        padding: 10px 12px;
    }

    .compact-title {
        font-size: 13px;
    }

    .compact-url {
        display: none;
    }

    /* Pagination */
    #pagination {
        flex-wrap: nowrap;
        gap: 2px;
    }

    .page-btn {
        min-width: 32px;
        height: 32px;
        padding: 0 8px;
        font-size: 11px;
    }

    .page-info {
        padding: 0 8px;
        font-size: 10px;
    }

    .page-ellipsis {
        padding: 0 2px;
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    #pagination {
        gap: 1px;
    }

    .page-btn {
        min-width: 28px;
        height: 28px;
        padding: 0 6px;
        font-size: 11px;
    }

    .page-info {
        padding: 0 6px;
        font-size: 9px;
    }

    .page-ellipsis {
        display: none;
    }
}

@media (max-width: 700px) {
    /* Keyboard legend - hide on mobile */
    .keyboard-legend {
        display: none;
    }

    /* Side panel full width */
    .side-panel {
        width: 100%;
        top: 0;
        height: 100vh;
    }

    body.panel-open .container {
        display: none;
    }

    body.panel-open .top-bar {
        display: none;
    }

    .side-panel-header {
        padding: 8px 12px;
        height: 52px;
    }

    .panel-tab {
        max-width: 200px;
        font-size: 10px;
    }

    .side-panel-title {
        font-size: 15px;
        padding: 10px 12px;
    }

    .tab-content-frame .tab-fallback {
        padding: 16px;
    }

    /* Thread view */
    .thread-tree {
        padding: 0 12px 16px 12px;
    }

    .thread-header {
        padding: 10px 12px;
    }

    .comment-main {
        padding: 12px;
    }

    .comment-body {
        font-size: 14px;
    }

    /* OpenGraph preview */
    .og-content {
        padding: 12px;
    }

    .og-title {
        font-size: 15px;
    }

    /* Stats */
    #stats-display {
        max-width: 100%;
    }

    /* Add form */
    #add-form {
        padding: 16px;
    }

    .form-group input,
    .form-group textarea {
        font-size: 16px; /* Prevents iOS zoom */
    }

    /* Timeline facets */
    .timeline-facets {
        padding: 12px;
    }

    .timeline-chart {
        height: 40px;
    }

    /* Domain facets - horizontal scroll */
    .domain-facets {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .domain-facets::-webkit-scrollbar {
        display: none;
    }

    .domain-facet {
        flex-shrink: 0;
    }

    /* Bookmarks */
    .bookmarks-header {
        flex-wrap: wrap;
        gap: 12px;
    }

    .bookmark-card {
        padding: 12px;
    }
}

/* Extra small screens */
@media (max-width: 400px) {
    .search-box {
        flex: 1 1 100%;
    }

    .top-bar {
        gap: 6px;
    }

    #search-btn {
        padding: 0 10px;
    }

    .type-btn {
        padding: 6px 8px;
    }

    .container {
        padding-top: 130px;
    }

    .panel-tab {
        max-width: 120px;
        padding: 6px 8px;
    }

    .panel-btn {
        width: 28px;
        height: 28px;
    }
}

/* Comment Thread Styles */
.thread-container {
    padding: 0;
    background: var(--surface);
    margin-top: 0;
}

.thread-tree {
    padding: 0 20px 16px 20px;
}

/* Parent post/comment */
.thread-parent {
    display: flex;
    gap: 12px;
    padding-bottom: 16px;
    margin-bottom: 8px;
}

.thread-node-marker {
    width: 3px;
    background: var(--primary);
    border-radius: 2px;
    flex-shrink: 0;
}

.thread-node-content {
    flex: 1;
    min-width: 0;
}

.parent-title {
    font-size: 14px;
    font-weight: 600;
    color: var(--on-surface);
    margin-bottom: 8px;
    line-height: 1.4;
    letter-spacing: -0.01em;
}

.parent-label {
    background: var(--black);
    color: var(--white);
    padding: 2px 8px;
    font-size: 9px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.parent-body {
    margin-top: 12px;
    padding: 12px 16px;
    background: var(--gray-50);
    border-left: 2px solid var(--black);
}

.parent-link {
    display: inline-block;
    margin-top: 12px;
    color: var(--gray-500);
    font-size: 11px;
    font-family: 'JetBrains Mono', monospace;
    text-decoration: none;
    word-break: break-all;
}

.parent-link:hover {
    color: var(--black);
    text-decoration: underline;
}

.parent-story-link {
    font-size: 14px;
    font-weight: 600;
    color: var(--on-surface);
    text-decoration: none;
    line-height: 1.4;
    letter-spacing: -0.01em;
}

.parent-story-link:hover {
    text-decoration: underline;
}

.thread-parent-story {
    padding-bottom: 12px;
}

/* Children header */
.thread-children-header {
    font-size: 10px;
    font-weight: 500;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: 'JetBrains Mono', monospace;
    padding: 12px 0 8px 15px;
    border-top: 1px solid var(--border);
}

/* Child comments with tree branches */
.thread-children {
    position: relative;
    padding-left: 0;
}

.thread-child {
    display: flex;
    gap: 0;
    position: relative;
    transition: background 0.15s;
}

.thread-child:hover {
    background: rgba(0,0,0,0.02);
}

.thread-child.current {
    background: var(--gray-100);
    border-left: 2px solid var(--black);
    margin-left: -2px;
}

.thread-branch {
    width: 24px;
    flex-shrink: 0;
    position: relative;
}

/* Vertical line */
.thread-branch::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

/* Horizontal branch to node */
.thread-branch::after {
    content: '';
    position: absolute;
    left: 8px;
    top: 20px;
    width: 12px;
    height: 2px;
    background: var(--border);
}

/* Last child - no vertical line below */
.thread-child:last-child .thread-branch::before {
    bottom: calc(100% - 22px);
}

.thread-child .thread-node-content {
    padding: 12px 16px 12px 4px;
    border-bottom: 1px solid var(--border);
    flex: 1;
}

.thread-child:last-child .thread-node-content {
    border-bottom: none;
}

.current-label {
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--accent);
    border-radius: 50%;
    vertical-align: middle;
}

/* Thread ancestry styles */
.thread-story {
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 12px;
}

.thread-story-link {
    font-size: 15px;
    font-weight: 600;
    color: var(--on-surface);
    text-decoration: none;
    line-height: 1.4;
    letter-spacing: -0.01em;
    display: block;
    overflow-wrap: break-word;
    word-break: break-word;
}

.thread-story-link:hover {
    text-decoration: underline;
}

.thread-story-meta {
    margin-top: 6px;
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    color: var(--gray-400);
    display: flex;
    gap: 12px;
}

.thread-ancestor {
    display: flex;
    gap: 0;
    position: relative;
    transition: background 0.15s;
    padding: 8px 0;
    border-radius: var(--radius);
}

.thread-ancestor:hover {
    background: rgba(0,0,0,0.02);
}

.thread-ancestor.current {
    background: var(--gray-100);
    border-left: 2px solid var(--black);
    padding-left: 12px;
    margin-left: 0 !important;
}

.thread-branch-vertical {
    width: 20px;
    flex-shrink: 0;
    position: relative;
}

.thread-branch-vertical::before {
    content: '';
    position: absolute;
    left: 8px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--border);
}

/* Hide vertical line on first and last ancestors */
.thread-ancestor:first-of-type .thread-branch-vertical::before,
.thread-ancestor:last-of-type .thread-branch-vertical::before {
    display: none;
}

.thread-ancestor .thread-node-content {
    flex: 1;
    min-width: 0;
    padding-right: 8px;
}

.thread-replies {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
}

.thread-replies-header {
    font-size: 10px;
    font-weight: 500;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: 'JetBrains Mono', monospace;
    padding-bottom: 8px;
}

.thread-reply {
    display: flex;
    gap: 0;
    position: relative;
    transition: background 0.15s;
}

.thread-reply:hover {
    background: rgba(0,0,0,0.02);
}

.thread-reply .thread-node-content {
    padding: 10px 12px 10px 4px;
    border-bottom: 1px solid var(--border);
    flex: 1;
    min-width: 0;
}

.thread-reply:last-child .thread-node-content {
    border-bottom: none;
}

.thread-reply .thread-branch::before {
    left: 6px;
}

.thread-reply .thread-branch::after {
    left: 6px;
    width: 10px;
}

.thread-reply:last-child .thread-branch::before {
    bottom: calc(100% - 20px);
}

/* Siblings section (other children of the parent) */
.thread-siblings {
    margin-top: 8px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
}

.thread-siblings-header {
    font-size: 10px;
    font-weight: 500;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: 'JetBrains Mono', monospace;
    padding-bottom: 8px;
}

.thread-sibling {
    display: flex;
    gap: 0;
    position: relative;
    transition: background 0.15s;
}

.thread-sibling:hover {
    background: rgba(0,0,0,0.02);
}

.thread-sibling.current {
    background: rgba(196, 50, 36, 0.08);
    border-left: 3px solid var(--accent);
}

.thread-sibling.current:hover {
    background: rgba(196, 50, 36, 0.12);
}

.thread-sibling .thread-node-content {
    padding: 10px 12px 10px 4px;
    border-bottom: 1px solid var(--border);
    flex: 1;
    min-width: 0;
}

.thread-sibling:last-child .thread-node-content {
    border-bottom: none;
}

.thread-sibling .thread-branch::before {
    left: 6px;
}

.thread-sibling .thread-branch::after {
    left: 6px;
    width: 10px;
}

.thread-sibling:last-child .thread-branch::before {
    bottom: calc(100% - 20px);
}

.thread-header {
    padding: 12px 20px;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.thread-header h3 {
    margin: 0;
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-500);
    font-family: 'JetBrains Mono', monospace;
}

.thread-comments {
    padding: 0;
}

.thread-comment {
    border-bottom: 1px solid var(--border);
    transition: background 0.15s;
}

.thread-comment:last-child {
    border-bottom: none;
}

.thread-comment:hover {
    background: rgba(0,0,0,0.02);
}

.thread-comment.highlighted {
    background: var(--gray-100);
    border-left: 2px solid var(--black);
}

.comment-main {
    padding: 16px 20px;
}

.comment-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
    font-size: 11px;
    color: var(--gray-500);
}

.comment-author {
    font-weight: 600;
    color: var(--black);
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
}

a.comment-author.author-link {
    color: var(--black);
    text-decoration: none;
    cursor: pointer;
}

a.comment-author.author-link:hover {
    color: var(--accent);
    text-decoration: underline;
}

.comment-date {
    color: var(--gray-400);
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
}

.comment-score {
    color: var(--gray-400);
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
}

.comment-body {
    font-size: 14px;
    line-height: 1.7;
    color: var(--on-surface);
    overflow-wrap: break-word;
    word-break: break-word;
}

.comment-body p {
    margin: 0 0 12px 0;
}

.comment-body p:last-child {
    margin-bottom: 0;
}

.comment-body a {
    color: var(--black);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.comment-body a:hover {
    text-decoration-thickness: 2px;
}

.comment-body code {
    background: var(--gray-100);
    padding: 2px 6px;
    font-family: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
    font-size: 12px;
}

.comment-body pre {
    background: var(--gray-100);
    padding: 12px 16px;
    overflow-x: auto;
    margin: 12px 0;
    border: 1px solid var(--border);
}

.comment-body pre code {
    background: none;
    padding: 0;
}

.comment-body mark {
    background: rgba(196, 50, 36, 0.1);
    color: inherit;
    padding: 1px 3px;
}

.comment-body mark.partial-right {
    padding-right: 0;
}

.thread-empty {
    padding: 48px 24px;
    text-align: center;
    color: var(--gray-500);
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.thread-error {
    padding: 16px 20px;
    margin: 16px;
    background: var(--white);
    color: var(--black);
    border: 1px solid var(--black);
    font-size: 12px;
    font-weight: 500;
    text-align: center;
}

.thread-loading {
    padding: 48px 24px;
    text-align: center;
    color: var(--gray-500);
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-family: 'JetBrains Mono', monospace;
}

.thread-loading::after {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 1px solid var(--gray-300);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    margin-left: 8px;
    vertical-align: middle;
}

/* Bookmark Styles */
.bookmark-btn {
    padding: 2px !important;
}
.bookmark-btn svg {
    width: 20px;
    height: 20px;
    transition: transform 0.2s ease;
}
.bookmark-btn .bm-icon-outline { display: block; }
.bookmark-btn .bm-icon-active  { display: none; }

/* hover (not bookmarked): flip up; black bg + white come from .panel-btn:hover */
.bookmark-btn:not(.bookmarked):hover .bm-icon-outline { transform: scaleY(-1); }

/* bookmarked: coral red fill, flipped */
#panel-bookmark.bookmarked {
    background: var(--surface);
    border-color: var(--border);
    color: var(--accent);
}
.bookmark-btn.bookmarked .bm-icon-outline { display: none; }
.bookmark-btn.bookmarked .bm-icon-active  { display: block; transform: scaleY(-1); }

/* hover (bookmarked): flip back down + standard black bg + white */
#panel-bookmark.bookmarked:hover {
    background: var(--black);
    border-color: var(--black);
    color: var(--white);
}
.bookmark-btn.bookmarked:hover .bm-icon-active { transform: scaleY(1); }
/* suppress hover-flip immediately after clicking until mouse leaves */
.bookmark-btn.bookmarked.just-clicked:hover .bm-icon-active { transform: scaleY(-1); }
#panel-bookmark.bookmarked.just-clicked:hover {
    background: var(--surface);
    border-color: var(--border);
    color: var(--accent);
}
.bookmark-btn.just-clicked:not(.bookmarked):hover .bm-icon-outline { transform: scaleY(1); }

.bookmark-count {
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    color: var(--gray-400);
    margin-left: 4px;
}

.bookmarks-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.bookmarks-header h2 {
    font-size: 12px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--on-surface);
    margin: 0;
}

.clear-bookmarks-btn {
    padding: 6px 12px;
    background: none;
    border: 1px solid var(--border);
    color: var(--gray-500);
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.clear-bookmarks-btn:hover {
    background: var(--black);
    border-color: var(--black);
    color: var(--white);
}

.bookmarks-empty {
    text-align: center;
    padding: 80px 24px;
    color: var(--gray-500);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.bookmark-card {
    background: var(--surface);
    padding: 16px;
    margin-bottom: 1px;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid var(--border);
}

.bookmark-card:hover {
    background: var(--gray-50);
}

.bookmark-card.comment {
    border-left: 2px solid var(--gray-400);
}

.bookmark-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 8px;
}

.bookmark-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--on-surface);
    margin: 0;
    line-height: 1.4;
    flex: 1;
    letter-spacing: -0.01em;
}

.bookmark-remove {
    width: 24px;
    height: 24px;
    border: none;
    background: none;
    color: var(--gray-400);
    cursor: pointer;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.bookmark-remove:hover {
    background: var(--black);
    color: var(--white);
}

.bookmark-meta {
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.02em;
    margin-bottom: 8px;
}

.bookmark-content {
    font-size: 12px;
    color: var(--gray-600);
    line-height: 1.6;
}

/* Search History Styles */
.search-history {
    max-width: 100%;
    margin: 0 auto;
    /* Span all columns of parent grid */
    grid-column: 1 / -1;
}

.search-history-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.history-title {
    font-size: 10px;
    font-weight: 500;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: 'JetBrains Mono', monospace;
}

.clear-history-btn {
    padding: 6px 12px;
    background: none;
    border: 1px solid var(--border);
    color: var(--gray-500);
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.clear-history-btn:hover {
    background: var(--black);
    border-color: var(--black);
    color: var(--white);
}

.search-history-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0;
    border: 1px solid var(--border);
    padding: 1px 0 0 1px;
}

@media (max-width: 1200px) {
    .search-history-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 700px) {
    .search-history-list {
        grid-template-columns: minmax(0, 1fr);
    }
}

.history-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    margin-top: -1px;
    margin-left: -1px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.history-item:hover {
    background: var(--gray-50);
}

.history-query {
    flex: 1;
    font-size: 13px;
    font-weight: 500;
    color: var(--on-surface);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    letter-spacing: -0.01em;
}

.history-time {
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    color: var(--gray-400);
    white-space: nowrap;
}

.history-remove {
    width: 20px;
    height: 20px;
    border: none;
    background: none;
    color: var(--gray-400);
    cursor: pointer;
    font-size: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all var(--transition-fast);
}

.history-item:hover .history-remove {
    opacity: 1;
}

.history-remove:hover {
    background: var(--black);
    color: var(--white);
}

.search-history-empty {
    text-align: center;
    padding: 80px 24px;
    color: var(--gray-500);
    /* Span all columns of parent grid */
    grid-column: 1 / -1;
}

.history-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.3;
}

.search-history-empty p {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0;
}

/* Compact Results View - 3 columns */
.compact-results {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1px;
    background: var(--border);
    border: 1px solid var(--border);
    /* Span all columns of parent grid */
    grid-column: 1 / -1;
}

@media (max-width: 1200px) {
    .compact-results {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 700px) {
    .compact-results {
        grid-template-columns: minmax(0, 1fr);
    }
}

.compact-row {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--surface);
    scroll-margin-top: 70px;
    cursor: pointer;
    transition: all var(--transition-fast);
    overflow: hidden;
    min-width: 0;
}

.compact-row:hover {
    background: var(--gray-50);
}

.compact-row.active {
    background: var(--selected-bg);
    color: var(--white);
}

.compact-row.active .compact-num,
.compact-row.active .compact-title,
.compact-row.active .compact-url {
    color: var(--white);
}

.compact-row.active .compact-url {
    opacity: 0.7;
}

.compact-row.comment {
    border-left: 2px solid var(--accent);
}

.compact-row.comment.active {
    border-left-color: var(--white);
}

.compact-num {
    color: var(--gray-400);
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    width: 24px;
    text-align: right;
    flex-shrink: 0;
}

.compact-title {
    flex: 1;
    font-size: 12px;
    font-weight: 500;
    color: var(--on-surface);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    min-width: 0;
    letter-spacing: -0.01em;
}

.compact-url {
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    color: var(--gray-400);
    text-decoration: none;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    flex-shrink: 0;
    max-width: 100px;
    text-transform: lowercase;
}

.compact-url:hover {
    color: var(--on-surface);
    text-decoration: underline;
}

.compact-url.no-url {
    display: none;
}

.compact-remove {
    width: 20px;
    height: 20px;
    border: none;
    background: none;
    color: var(--gray-400);
    cursor: pointer;
    font-size: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    opacity: 0;
    transition: all var(--transition-fast);
}

.compact-row:hover .compact-remove {
    opacity: 1;
}

.compact-remove:hover {
    background: var(--black);
    color: var(--white);
}

/* Timeline Facets */
.timeline-facets {
    display: none;
    margin-bottom: 16px;
    padding: 16px;
    background: var(--surface);
    border: 1px solid var(--border);
}

.timeline-facets.show {
    display: block;
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.timeline-label {
    font-size: 10px;
    font-weight: 500;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-family: 'JetBrains Mono', monospace;
}

.timeline-clear {
    padding: 4px 12px;
    background: none;
    border: 1px solid var(--border);
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--gray-500);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.timeline-clear:hover {
    background: var(--black);
    border-color: var(--black);
    color: var(--white);
}

.timeline-chart {
    display: flex;
    align-items: flex-end;
    gap: 1px;
    height: 48px;
    padding: 0;
    background: var(--border);
}

.timeline-bar {
    flex: 1;
    min-width: 6px;
    max-width: 32px;
    background: var(--gray-200);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.timeline-bar:hover {
    background: var(--black);
}

.timeline-bar.active {
    background: var(--black);
}

.timeline-bar-tooltip {
    display: none;
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background: var(--black);
    color: var(--white);
    padding: 4px 8px;
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    white-space: nowrap;
    margin-bottom: 4px;
    z-index: 10;
}

.timeline-bar:hover .timeline-bar-tooltip {
    display: block;
}

.timeline-labels {
    position: relative;
    height: 16px;
    font-size: 10px;
    font-family: 'JetBrains Mono', monospace;
    color: var(--gray-400);
    margin-top: 8px;
}

.timeline-year-label {
    position: absolute;
    transform: translateX(-50%);
    white-space: nowrap;
}

.timeline-year-label:first-child {
    transform: translateX(0);
}

.timeline-year-label:last-child {
    transform: translateX(-100%);
}

/* Domain Facets */
.domain-facets {
    display: none;
    flex-wrap: wrap;
    gap: 0;
    margin-bottom: 16px;
    background: var(--surface);
    border: 1px solid var(--border);
}

.domain-facets.show {
    display: flex;
}

.domain-facet {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--surface);
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    margin-right: -1px;
    margin-bottom: -1px;
    font-size: 11px;
    font-weight: 500;
    color: var(--on-surface);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.domain-facet:hover {
    background: var(--gray-50);
}

.domain-facet.active {
    background: var(--black);
    border-color: var(--black);
    color: var(--white);
    z-index: 1;
}

.domain-facet-name {
    max-width: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    text-transform: lowercase;
}

.domain-facet-count {
    background: var(--gray-100);
    padding: 2px 6px;
    font-size: 10px;
    font-weight: 500;
    font-family: 'JetBrains Mono', monospace;
}

.domain-facet.active .domain-facet-count {
    background: rgba(255,255,255,0.15);
}

.domain-facets-label {
    font-size: 10px;
    font-weight: 500;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 8px 12px;
    border-right: 1px solid var(--border);
    align-self: center;
    font-family: 'JetBrains Mono', monospace;
}

.domain-facet-clear {
    padding: 8px 12px;
    background: none;
    border: none;
    border-right: 1px solid var(--border);
    font-size: 10px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--gray-500);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.domain-facet-clear:hover {
    background: var(--black);
    color: var(--white);
}

/* Keyboard Legend */
.keyboard-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    justify-content: center;
    padding: 24px 16px;
    margin-top: 32px;
    font-size: 11px;
    color: var(--gray-400);
}

.keyboard-legend span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.keyboard-legend kbd {
    display: inline-block;
    padding: 2px 6px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 10px;
    background: var(--white);
    border: 1px solid var(--border);
    color: var(--gray-600);
}

/* Option+Select search mode - only highlight selected text */
body.option-select-mode ::selection {
    background: rgb(196, 50, 36);
    color: var(--white);
}

body.option-select-mode ::-moz-selection {
    background: rgb(196, 50, 36);
    color: var(--white);
}

/* ============ AI Summary Feature ============ */

/* Summarize button */
.summarize-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    min-width: 36px;
    min-height: 36px;
    padding: 0;
    background: transparent;
    color: var(--on-surface-secondary);
    border: 1px solid var(--border);
    cursor: pointer;
    transition: all var(--transition-fast);
    overflow: hidden;
}
.summarize-btn:hover {
    color: var(--accent);
    border-color: var(--accent);
}
.summarize-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}
.summarize-btn.loading {
    color: var(--on-surface-secondary);
    border-color: var(--border);
    position: relative;
}
.summarize-btn.loading svg {
    visibility: hidden;
}
.summarize-btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 14px;
    height: 14px;
    margin-top: -7px;
    margin-left: -7px;
    border: 2px solid var(--border);
    border-top-color: var(--on-surface);
    border-radius: 50%;
    box-sizing: border-box;
    animation: summarize-spin 0.8s linear infinite;
}
@keyframes summarize-spin {
    to { transform: rotate(360deg); }
}
.summarize-btn svg {
    width: 16px;
    height: 16px;
}

/* Summary Rail */
.summary-rail {
    position: fixed;
    top: 56px;
    right: -33.333%;
    width: 33.333%;
    min-width: 320px;
    max-width: 500px;
    height: calc(100vh - 56px);
    background: var(--surface);
    border-left: 1px solid var(--border);
    z-index: 100;
    display: flex;
    flex-direction: column;
    transition: right 0.2s ease;
}
.summary-rail.open {
    right: 0;
}

/* Side panel adjustments when summary is open */
body.summary-open .side-panel {
    z-index: 60;
}

/* Smooth transitions for layout changes */
body.summary-open .container {
    transition: padding-right 0.2s ease;
}
body.summary-open .side-panel {
    transition: transform 0.2s ease, right 0.2s ease, width 0.2s ease;
}

/* Adjust layout when summary rail is open */
body.summary-open .container {
    padding-right: calc(33.333% + 24px);
}
body.summary-open .side-panel {
    right: 33.333%;
    width: calc(45% - 16px);
}
body.summary-open.panel-open .container {
    padding-right: calc(33.333% + 45% + 8px);
}

/* When both panels open, ensure proper stacking */
/* When only summary rail is open, use 2 columns */
body.summary-open #search-results {
    grid-template-columns: repeat(2, 1fr);
}

/* When both panels open */
body.summary-open.panel-open #search-results {
    grid-template-columns: 1fr;
    max-width: calc(100vw - 33.333% - 45% - 48px);
}

.summary-rail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    background: var(--surface);
}
.summary-rail-header h3 {
    margin: 0;
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--on-surface-secondary);
}
.summary-rail-header .panel-btn {
    color: var(--on-surface-secondary);
    background: transparent;
    border: none;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}
.summary-rail-header .panel-btn:hover {
    color: var(--on-surface);
}
.summary-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    font-size: 13px;
    line-height: 1.6;
    color: var(--on-surface);
}
.summary-content p {
    margin-bottom: 10px;
}
.summary-content h4 {
    margin-top: 14px;
    margin-bottom: 6px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    color: var(--on-surface);
}
.summary-content ul {
    margin: 6px 0;
    padding-left: 16px;
}
.summary-content li {
    margin-bottom: 4px;
}
.summary-content .paper-ref {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    cursor: pointer;
}
.summary-content .paper-ref:hover {
    text-decoration: underline;
}
.summary-placeholder {
    color: var(--on-surface-secondary);
}
.md-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 12px;
    margin: 8px 0;
}

.md-table th,
.md-table td {
    padding: 5px 10px;
    border: 1px solid var(--border);
    text-align: left;
    vertical-align: top;
}

.md-table thead th {
    background: var(--surface-2);
    font-weight: 600;
    color: var(--on-surface-secondary);
}

.md-table tbody tr:nth-child(even) {
    background: var(--surface-1);
}

.pdf-summarize-btn.cached {
    background: var(--gray-100);
    color: var(--gray-600);
    border-color: var(--gray-300);
}

.cache-badge {
    display: inline-block;
    font-size: 10px;
    font-family: var(--font-mono);
    font-weight: 400;
    padding: 1px 6px;
    border-radius: 3px;
    background: var(--gray-100);
    color: var(--gray-500);
    border: 1px solid var(--gray-300);
    vertical-align: middle;
    opacity: 0.9;
    letter-spacing: 0;
}

.summary-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    color: var(--on-surface-secondary);
    font-size: 12px;
    padding: 40px 20px;
    text-align: center;
}
.summary-loading::before {
    content: '';
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--on-surface);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
.summary-error {
    color: var(--accent);
    font-size: 12px;
}
.summary-followup {
    padding: 8px 12px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 6px;
}
.summary-followup.hidden {
    display: none;
}
.summary-stream-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 5px;
    padding: 10px 12px;
    border-top: 1px solid var(--border);
}
.summary-stream-loading span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--on-surface-secondary);
    animation: summary-dot-bounce 1.2s infinite ease-in-out;
}
.summary-stream-loading span:nth-child(2) { animation-delay: 0.2s; }
.summary-stream-loading span:nth-child(3) { animation-delay: 0.4s; }
@keyframes summary-dot-bounce {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.3; }
    40% { transform: scale(1); opacity: 1; }
}
.summary-followup input {
    flex: 1;
    padding: 7px 10px;
    border: 1px solid var(--border);
    font-size: 12px;
    font-family: inherit;
    background: var(--surface);
    color: var(--on-surface);
}
.summary-followup input:focus {
    outline: none;
    border-color: var(--on-surface);
}
.summary-followup button {
    padding: 7px 10px;
    background: transparent;
    color: var(--on-surface-secondary);
    border: 1px solid var(--border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.summary-followup button:hover {
    background: var(--gray-100, #f5f5f5);
    color: var(--on-surface);
    border-color: var(--on-surface-secondary);
}
.summary-followup button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}
.followup-divider {
    border: none;
    border-top: 1px dashed var(--border);
    margin: 12px 0;
}
.followup-question {
    font-size: 12px;
    font-weight: 600;
    color: var(--on-surface-secondary);
    margin-bottom: 8px;
}
.summary-settings {
    padding: 12px 16px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 8px;
}
.summary-settings input {
    flex: 1;
    padding: 8px 10px;
    border: 1px solid var(--border);
    font-size: 12px;
    font-family: inherit;
}
.summary-settings input:focus {
    outline: none;
    border-color: var(--on-surface);
}
.summary-settings button {
    padding: 8px 12px;
    background: var(--on-surface);
    color: var(--surface);
    border: none;
    cursor: pointer;
    font-size: 11px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.summary-settings button:hover {
    background: var(--on-surface-secondary);
}
.summary-settings.hidden {
    display: none;
}

@media (max-width: 1200px) {
    .summary-rail {
        width: 40%;
        right: -40%;
        max-width: none;
    }
    body.summary-open .container {
        padding-right: calc(40% + 24px);
    }
    body.summary-open .side-panel {
        right: 40%;
        width: calc(40% - 8px);
    }
    body.summary-open.panel-open .container {
        padding-right: calc(40% + 40% + 8px);
    }
}

@media (max-width: 900px) {
    .summary-rail {
        width: 100%;
        right: -100%;
        max-width: none;
        min-width: 0;
    }
    body.summary-open .container {
        padding-right: 24px;
    }
    body.summary-open .side-panel {
        right: 0;
        width: 100%;
    }
    body.summary-open.panel-open .container {
        padding-right: 24px;
    }
}