/* Editorial research catalog */
:root {
    --primary: #17665b;
    --primary-hover: #0e5047;
    --primary-soft: #dcebe5;
    --primary-contrast: #ffffff;
    --secondary: #66716c;
    --success: #3b725c;
    --background: #f3f0e8;
    --surface: #fbfaf6;
    --surface-strong: #ffffff;
    --surface-hover: #ede9df;
    --text-primary: #1d2926;
    --text-secondary: #58645f;
    --text-tertiary: #7b8681;
    --border: #d9d5ca;
    --border-strong: #c5c0b4;
    --chart-llm: #2f7f70;
    --chart-other: #b6c8c0;
    --chart-grid: #e4dfd4;
    --shadow-sm: 0 1px 2px rgba(35, 53, 48, 0.06), 0 8px 26px rgba(35, 53, 48, 0.05);
    --shadow-md: 0 14px 38px rgba(35, 53, 48, 0.10);
    --shadow-lg: 0 24px 70px rgba(28, 49, 43, 0.16);
    --radius-sm: 9px;
    --radius-md: 15px;
    --radius-lg: 24px;
}

body.dark {
    --primary: #8bc8b9;
    --primary-hover: #b2ddd2;
    --primary-soft: #203f38;
    --primary-contrast: #10211d;
    --secondary: #9eaaa5;
    --success: #8ac4a8;
    --background: #111815;
    --surface: #18211e;
    --surface-strong: #1c2723;
    --surface-hover: #24312c;
    --text-primary: #edf2ef;
    --text-secondary: #acb8b3;
    --text-tertiary: #7f8c87;
    --border: #30403a;
    --border-strong: #40534c;
    --chart-llm: #76b9aa;
    --chart-other: #445f56;
    --chart-grid: #30403a;
    --shadow-sm: 0 8px 28px rgba(0, 0, 0, 0.15);
    --shadow-md: 0 18px 44px rgba(0, 0, 0, 0.24);
    --shadow-lg: 0 26px 78px rgba(0, 0, 0, 0.36);
}

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

body {
    font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    min-width: 320px;
    background:
        radial-gradient(circle at 8% -6%, rgba(47, 127, 112, 0.13), transparent 30rem),
        radial-gradient(circle at 95% 18%, rgba(128, 106, 61, 0.06), transparent 28rem),
        var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background 0.3s, color 0.3s;
}

body::before {
    content: '';
    position: fixed;
    inset: 0;
    z-index: -1;
    opacity: 0.32;
    pointer-events: none;
    background-image: radial-gradient(rgba(29, 41, 38, 0.14) 0.55px, transparent 0.55px);
    background-size: 7px 7px;
    mask-image: linear-gradient(to bottom, black, transparent 58%);
}

button,
input {
    font: inherit;
}

button:focus-visible,
input:focus-visible,
a:focus-visible {
    outline: 3px solid color-mix(in srgb, var(--primary) 45%, transparent);
    outline-offset: 3px;
}

[hidden] {
    display: none !important;
}

.skip-link {
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 300;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    background: var(--primary);
    color: var(--primary-contrast);
    text-decoration: none;
    transform: translateY(-160%);
}

.skip-link:focus {
    transform: translateY(0);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

main {
    max-width: 1280px;
    margin: 0 auto;
    padding: 32px 24px 48px;
}

/* Header */
.header {
    position: relative;
    overflow: hidden;
    background:
        radial-gradient(circle at 88% 18%, rgba(47, 127, 112, 0.17), transparent 21rem),
        linear-gradient(135deg, var(--surface-strong), var(--surface));
    border: 1px solid color-mix(in srgb, var(--border) 75%, transparent);
    border-radius: var(--radius-lg);
    padding: 48px 52px 54px;
    margin-bottom: 28px;
    box-shadow: var(--shadow-sm);
}

.header::after {
    content: '';
    position: absolute;
    width: 260px;
    height: 260px;
    right: -118px;
    bottom: -154px;
    border: 1px solid color-mix(in srgb, var(--primary) 22%, transparent);
    border-radius: 50%;
    box-shadow:
        0 0 0 38px color-mix(in srgb, var(--primary) 5%, transparent),
        0 0 0 78px color-mix(in srgb, var(--primary) 3%, transparent);
}

.header-kicker {
    position: relative;
    z-index: 1;
    margin-bottom: 12px;
    color: var(--primary);
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 0.16em;
    text-transform: uppercase;
}

.header-top {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 18px;
}

.title {
    max-width: 880px;
    font-family: 'Fraunces', Georgia, serif;
    font-size: clamp(2.35rem, 5.2vw, 4.45rem);
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: -0.052em;
    line-height: 0.99;
    text-wrap: balance;
}

.toggle-mode-wrapper {
    display: flex;
}

.toggle-mode {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    border: 1px solid var(--border);
    background: color-mix(in srgb, var(--surface-strong) 84%, transparent);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.toggle-mode:hover {
    background: var(--surface-hover);
    color: var(--primary);
    transform: translateY(-1px);
}

.description {
    position: relative;
    z-index: 1;
    max-width: 72ch;
    font-size: clamp(0.98rem, 1.5vw, 1.12rem);
    color: var(--text-secondary);
    line-height: 1.72;
    text-wrap: pretty;
}

/* Container */
.container {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Stats Toolbar */
.ia-toolbar {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 28px;
    box-shadow: var(--shadow-sm);
}

.overview-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 18px;
}

.panel-kicker {
    margin-bottom: 4px;
    color: var(--primary);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.13em;
    text-transform: uppercase;
}

.overview-title {
    font-family: 'Fraunces', Georgia, serif;
    font-size: clamp(1.45rem, 2.4vw, 2rem);
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.coverage-toggle {
    display: inline-flex;
    padding: 4px;
    background: var(--surface-strong);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.coverage-toggle-button {
    padding: 7px 13px;
    border: 0;
    border-radius: 8px;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font: inherit;
    font-size: 12px;
    font-weight: 600;
}

.coverage-toggle-button:hover {
    color: var(--primary);
}

.coverage-toggle-button.active {
    background: var(--primary);
    color: var(--primary-contrast);
}

body.dark .coverage-toggle-button.active {
    color: var(--primary-contrast);
}

.stats-strip {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin-bottom: 22px;
}

.stat-card {
    position: relative;
    overflow: hidden;
    padding: 16px 18px 17px;
    background: var(--surface-strong);
    border-radius: 12px;
    border: 1px solid var(--border);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), transparent 80%);
    opacity: 0.65;
}

.stat-label {
    font-size: 12px;
    color: var(--text-tertiary);
    letter-spacing: 0.02em;
    margin-bottom: 4px;
}

.stat-value {
    font-family: 'Fraunces', Georgia, serif;
    font-size: 29px;
    font-weight: 900;
    color: var(--primary);
    font-variant-numeric: tabular-nums;
    letter-spacing: -0.035em;
}

.stat-detail {
    margin-top: 1px;
    color: var(--text-secondary);
    font-size: 12px;
}

/* Catalog coverage charts */
.coverage-views {
    padding: 18px;
    background: var(--surface-strong);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

.coverage-view[hidden] {
    display: none;
}

.coverage-legend {
    display: flex;
    justify-content: flex-end;
    gap: 16px;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 11px;
}

.coverage-legend span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.legend-swatch {
    width: 9px;
    height: 9px;
    border-radius: 2px;
}

.legend-llm {
    background: var(--chart-llm);
}

.legend-other {
    background: var(--chart-other);
}

.coverage-chart-scroll {
    overflow-x: auto;
    padding-bottom: 3px;
}

.year-coverage-chart {
    display: grid;
    grid-template-columns: repeat(var(--year-count), minmax(32px, 1fr));
    gap: 7px;
    min-width: 660px;
    height: 235px;
    padding-top: 4px;
}

.year-bar-column {
    display: grid;
    grid-template-rows: 18px minmax(0, 1fr) 24px;
    min-width: 0;
    text-align: center;
}

.year-bar-value,
.year-bar-label {
    color: var(--text-secondary);
    font-size: 10px;
    font-variant-numeric: tabular-nums;
}

.year-bar-label {
    align-self: end;
    transform: rotate(-45deg);
    transform-origin: center;
    white-space: nowrap;
}

.year-bar-track {
    display: flex;
    align-items: flex-end;
    height: 100%;
    border-bottom: 1px solid var(--chart-grid);
    background: repeating-linear-gradient(
        to top,
        transparent 0,
        transparent calc(25% - 1px),
        var(--chart-grid) 25%
    );
}

.year-bar-stack {
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    width: 72%;
    max-width: 26px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 3px 3px 0 0;
}

.year-bar-segment {
    display: block;
    min-height: 0;
}

.year-bar-llm {
    order: 1;
    background: var(--chart-llm);
}

.year-bar-other {
    background: var(--chart-other);
}

.group-coverage-chart {
    display: grid;
    gap: 11px;
}

.group-bar-row {
    display: grid;
    grid-template-columns: minmax(132px, 1.25fr) minmax(180px, 4fr) 80px;
    align-items: center;
    gap: 12px;
}

.group-bar-label {
    overflow: hidden;
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 600;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.group-bar-track {
    display: block;
    height: 11px;
    overflow: hidden;
    background: var(--surface-hover);
    border-radius: 999px;
}

.group-bar-fill {
    display: block;
    height: 100%;
    background: var(--chart-llm);
    border-radius: inherit;
}

.group-bar-value {
    color: var(--text-primary);
    font-size: 12px;
    font-variant-numeric: tabular-nums;
    font-weight: 700;
    text-align: right;
}

.group-bar-value small {
    color: var(--text-tertiary);
    font-size: 10px;
    font-weight: 500;
}

.coverage-disclaimer {
    margin: 9px 2px 16px;
    color: var(--text-tertiary);
    font-size: 11px;
}

/* Active Filters */
.active-filters {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 12px;
    border-top: 1px solid var(--border);
    padding-top: 16px;
}

.active-filters-title {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
}

.active-filters-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.active-filters-empty {
    font-size: 13px;
    color: var(--text-tertiary);
    font-style: italic;
}

.filter-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 9px 6px 11px;
    background: var(--primary-soft);
    border: 1px solid color-mix(in srgb, var(--primary) 25%, transparent);
    color: var(--primary);
    border-radius: 8px;
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    text-align: left;
    transition: transform 0.18s, background 0.18s, border-color 0.18s;
}

.filter-chip:hover {
    background: color-mix(in srgb, var(--primary-soft) 65%, var(--surface-strong));
    border-color: var(--primary);
    transform: translateY(-1px);
}

.filter-chip:active {
    transform: translateY(0);
}

.filter-chip i {
    font-size: 10px;
}

.quick-clear {
    padding: 7px 11px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.2s;
}

.quick-clear:hover {
    background: var(--surface-strong);
    border-color: var(--primary);
    color: var(--primary);
}

/* Filter Bar */
.filter-bar {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.filter-bar-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
}

.filter-bar-title,
.results-title {
    font-family: 'Fraunces', Georgia, serif;
    color: var(--text-primary);
    font-size: clamp(1.45rem, 2.4vw, 2rem);
    line-height: 1.15;
    letter-spacing: -0.025em;
}

.filter-bar-summary {
    max-width: 49ch;
    color: var(--text-tertiary);
    font-size: 12px;
    line-height: 1.55;
    text-align: right;
    text-wrap: pretty;
}

.filter-select-grid {
    position: relative;
    z-index: 20;
    display: grid;
    grid-template-columns: minmax(190px, 0.65fr) minmax(320px, 1.35fr);
    gap: 16px;
    align-items: end;
}

.taxonomy-filters {
    display: grid;
    gap: 18px;
    padding-top: 22px;
    border-top: 1px solid var(--border);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 9px;
}

.filter-label-row {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
}

.filter-label {
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.015em;
}

.filter-helper {
    color: var(--text-tertiary);
    font-size: 10px;
    text-align: right;
}

.filter-group-select {
    min-width: 0;
}

.publisher-filter-group {
    min-width: 0;
}

.taxonomy-filters .filter-label {
    display: block;
    color: var(--text-primary);
    font-size: 12px;
}

.filter-options {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}

.filter-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 7px 8px 7px 11px;
    background: var(--surface-strong);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: transform 0.18s, border-color 0.18s, color 0.18s, background 0.18s;
    font-weight: 500;
}

.filter-btn::before {
    content: none;
}

.filter-btn:hover {
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-1px);
}

.filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--primary-contrast);
    font-weight: 600;
}

.filter-btn.active:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
}

.filter-btn:active {
    transform: translateY(0);
}

.filter-btn-count {
    min-width: 22px;
    padding: 1px 5px;
    border-radius: 5px;
    background: var(--surface-hover);
    color: var(--text-tertiary);
    font-size: 10px;
    font-variant-numeric: tabular-nums;
    text-align: center;
}

.filter-btn.active .filter-btn-count {
    background: color-mix(in srgb, var(--surface-strong) 20%, transparent);
    color: inherit;
}

/* Custom Select Dropdown */
.custom-select {
    position: relative;
    width: 100%;
    min-width: 0;
}

.select-trigger {
    width: 100%;
    min-height: 58px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: var(--surface-strong);
    border: 1px solid var(--border-strong);
    border-radius: 11px;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 13px;
    color: var(--text-primary);
    font-weight: 500;
}

.select-trigger:hover {
    border-color: var(--primary);
    box-shadow: 0 5px 18px color-mix(in srgb, var(--primary) 10%, transparent);
}

.select-trigger.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 13%, transparent);
}

.select-trigger-copy {
    display: grid;
    min-width: 0;
    gap: 1px;
    text-align: left;
}

.select-value {
    overflow: hidden;
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 700;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.select-meta {
    overflow: hidden;
    color: var(--text-tertiary);
    font-size: 10px;
    font-weight: 500;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.select-trigger i {
    color: var(--text-tertiary);
    transition: transform 0.2s;
}

.select-trigger.active i {
    transform: rotate(180deg);
}

.select-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--surface-strong);
    border: 1px solid var(--border);
    border-radius: 13px;
    box-shadow: var(--shadow-lg);
    max-height: 360px;
    overflow-y: auto;
    z-index: 120;
    opacity: 0;
    transform: translateY(-10px);
    pointer-events: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.select-dropdown.active {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

.select-option {
    display: block;
    width: 100%;
    padding: 10px 13px;
    background: transparent;
    border: 0;
    cursor: pointer;
    transition: all 0.15s;
    font-size: 12px;
    color: var(--text-primary);
    text-align: left;
}

.select-option:hover {
    background: var(--surface-hover);
    color: var(--primary);
}

.select-option.selected {
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 600;
}

.select-option:first-child {
    border-radius: 12px 12px 0 0;
}

.select-option:last-child {
    border-radius: 0 0 12px 12px;
}

.publisher-dropdown {
    left: auto;
    right: 0;
    width: min(720px, calc(100vw - 64px));
    max-height: min(590px, 72vh);
    overflow: hidden;
}

.publisher-search {
    position: sticky;
    top: 0;
    z-index: 2;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    background: color-mix(in srgb, var(--surface-strong) 94%, transparent);
    border-bottom: 1px solid var(--border);
    backdrop-filter: blur(12px);
}

.publisher-search i {
    margin-left: 3px;
    color: var(--text-tertiary);
    font-size: 12px;
}

.publisher-search-input {
    width: 100%;
    padding: 9px 11px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 12px;
}

.publisher-search-input::placeholder {
    color: var(--text-tertiary);
}

.publisher-search-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 13%, transparent);
}

.publisher-option-list {
    max-height: min(520px, calc(72vh - 65px));
    padding: 8px;
    overflow-y: auto;
}

.publisher-all-option {
    margin-bottom: 5px;
    border-radius: 8px !important;
}

.publisher-group {
    padding: 12px 4px 9px;
    border-top: 1px solid var(--border);
}

.publisher-group-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    padding: 0 8px 8px;
}

.publisher-group-heading > span:first-child {
    display: grid;
    gap: 1px;
}

.publisher-group-heading strong {
    color: var(--text-primary);
    font-size: 12px;
    font-weight: 800;
}

.publisher-group-heading small,
.publisher-group-count {
    color: var(--text-tertiary);
    font-size: 9px;
    line-height: 1.45;
}

.publisher-group-count {
    flex: 0 0 auto;
    padding-top: 2px;
    font-variant-numeric: tabular-nums;
}

.publisher-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    border-radius: 7px !important;
}

.publisher-option-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.publisher-option-count {
    min-width: 27px;
    padding: 1px 6px;
    border-radius: 5px;
    background: var(--surface-hover);
    color: var(--text-tertiary);
    font-size: 9px;
    font-variant-numeric: tabular-nums;
    text-align: center;
}

.publisher-option.selected .publisher-option-count {
    background: color-mix(in srgb, var(--primary) 15%, transparent);
    color: var(--primary);
}

.publisher-search-empty {
    padding: 28px 16px;
    color: var(--text-tertiary);
    font-size: 12px;
    text-align: center;
}

/* Custom scrollbar for dropdown */
.select-dropdown::-webkit-scrollbar {
    width: 8px;
}

.select-dropdown::-webkit-scrollbar-track {
    background: var(--background);
    border-radius: 4px;
}

.select-dropdown::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 4px;
}

.select-dropdown::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* Catalog search */
.search-box {
    position: relative;
    width: 100%;
}

.search-box input {
    width: 100%;
    padding: 14px 20px 14px 48px;
    border: 1px solid var(--border-strong);
    border-radius: 13px;
    font-size: 14px;
    background: var(--surface-strong);
    color: var(--text-primary);
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 400;
}

.search-box input::placeholder {
    color: var(--text-tertiary);
}

.search-box input:hover {
    border-color: var(--primary);
}

.search-box input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px color-mix(in srgb, var(--primary) 12%, transparent);
}

.search-box i {
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    font-size: 16px;
    pointer-events: none;
    transition: color 0.2s;
}

.search-box input:focus + i,
.search-box input:hover + i {
    color: var(--primary);
}

/* Paper List */
.paper-list {
    display: flex;
    flex-direction: column;
    gap: 11px;
}

.paper-card {
    position: relative;
    background: color-mix(in srgb, var(--surface-strong) 88%, transparent);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px 26px;
    box-shadow: 0 1px 0 rgba(35, 53, 48, 0.02);
    transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s, background 0.2s;
}

.paper-card:hover {
    box-shadow: var(--shadow-md);
    border-color: color-mix(in srgb, var(--primary) 38%, var(--border));
    background: var(--surface-strong);
    transform: translateY(-1px);
}

.paper-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.paper-venue {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 11px;
    font-weight: 800;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.paper-venue span {
    padding-left: 7px;
    border-left: 1px solid var(--border-strong);
    color: var(--text-tertiary);
    font-variant-numeric: tabular-nums;
}

.llm-badge {
    padding: 3px 7px;
    background: var(--primary-soft);
    border: 1px solid color-mix(in srgb, var(--primary) 22%, transparent);
    color: var(--primary);
    border-radius: 6px;
    font-size: 9px;
    font-weight: 800;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.paper-title {
    max-width: 58ch;
    font-family: 'Fraunces', Georgia, serif;
    font-size: clamp(1.1rem, 1.8vw, 1.34rem);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.3;
    letter-spacing: -0.018em;
    text-wrap: pretty;
    transition: color 0.2s;
}

.paper-title a {
    color: inherit;
    text-decoration: none;
}

.paper-title a:hover {
    color: var(--primary-hover);
}

.paper-authors {
    max-width: 90ch;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.5;
}

.paper-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 14px;
    padding-top: 13px;
    border-top: 1px solid var(--border);
}

.paper-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.tag {
    padding: 3px 8px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 10px;
    color: var(--text-secondary);
    font-weight: 500;
}

.paper-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 2px;
    background: transparent;
    color: var(--primary);
    text-decoration: none;
    font-size: 11px;
    font-weight: 800;
    transition: all 0.2s;
}

.paper-link:hover {
    color: var(--primary-hover);
    transform: translateX(2px);
}

/* Loader */
.loader {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 24px;
    color: var(--text-secondary);
}

.loader.active {
    display: flex;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-bottom: 16px;
}

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

/* Empty State */
.empty-state {
    text-align: center;
    padding: 68px 24px 74px;
    background: var(--surface);
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius-lg);
}

.empty-state-icon {
    display: inline-grid;
    width: 44px;
    height: 44px;
    margin-bottom: 16px;
    place-items: center;
    border-radius: 12px;
    background: var(--primary-soft);
    color: var(--primary);
}

.empty-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.empty-subtitle {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.reset-button, .clear-all {
    padding: 10px 20px;
    background: var(--primary);
    color: var(--primary-contrast);
    border: none;
    border-radius: 9px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.reset-button:hover, .clear-all:hover {
    background: var(--primary-hover);
    box-shadow: var(--shadow-sm);
}

/* Results */
.results-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    padding: 7px 4px 0;
}

.results-info {
    padding: 7px 10px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: color-mix(in srgb, var(--surface-strong) 76%, transparent);
    font-size: 11px;
    color: var(--text-secondary);
    font-variant-numeric: tabular-nums;
}

.results-info strong {
    font-weight: 800;
    color: var(--primary);
}

.site-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-top: 36px;
    padding: 22px 4px 0;
    border-top: 1px solid var(--border);
    color: var(--text-tertiary);
    font-size: 11px;
}

.site-footer code {
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    color: var(--text-secondary);
}

.site-footer a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-weight: 700;
    text-decoration: none;
}

.site-footer a:hover {
    color: var(--primary-hover);
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.row {
    display: flex;
    flex-direction: row;
}

.gap-8 {
    gap: 8px;
}

.align-center {
    align-items: center;
}

/* Group Filter Bar */
.group-filter-bar {
    background: var(--surface);
    border-radius: var(--radius-md);
    padding: 16px 24px;
    box-shadow: var(--shadow-sm);
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}

.group-filter-bar .filter-btn {
    padding: 8px 16px;
}

/* Responsive Design */
@media (max-width: 768px) {
    main {
        padding: 18px 13px 34px;
    }

    .header {
        padding: 34px 26px 38px;
    }

    .title {
        font-size: clamp(2.25rem, 9vw, 3.45rem);
    }

    .header-top {
        align-items: flex-start;
        gap: 18px;
    }

    .toggle-mode {
        flex: 0 0 auto;
    }

    .overview-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .filter-bar-header {
        align-items: flex-start;
        flex-direction: column;
        gap: 8px;
    }

    .filter-bar-summary {
        max-width: 60ch;
        text-align: left;
    }

    .filter-select-grid {
        grid-template-columns: 1fr;
    }

    .publisher-filter-group {
        order: -1;
    }

    .publisher-dropdown {
        right: auto;
        left: 0;
        width: min(100%, calc(100vw - 58px));
    }

    .active-filters {
        grid-template-columns: 1fr auto;
    }

    .active-filters-title {
        grid-column: 1 / -1;
    }

    .stats-strip {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .stat-card {
        min-width: 0;
    }

    .group-bar-row {
        grid-template-columns: minmax(110px, 1.2fr) minmax(90px, 2fr) 68px;
        gap: 8px;
    }

    .paper-card {
        padding: 20px 16px;
    }

    .paper-title {
        font-size: 1.08rem;
    }

    .filter-bar, .ia-toolbar {
        padding: 20px;
    }

    .site-footer {
        align-items: flex-start;
        flex-direction: column;
        gap: 10px;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 29px 20px 34px;
    }

    .header-top {
        gap: 10px;
    }

    .title {
        font-size: clamp(2rem, 10vw, 2.65rem);
    }

    .toggle-mode {
        width: 38px;
        height: 38px;
    }

    .filter-bar,
    .ia-toolbar {
        padding: 17px;
    }

    .stats-strip {
        gap: 8px;
    }

    .stat-card {
        padding: 13px;
    }

    .stat-value {
        font-size: 25px;
    }

    .coverage-views {
        padding: 12px;
    }

    .coverage-legend {
        justify-content: flex-start;
        flex-wrap: wrap;
        gap: 6px 12px;
    }

    .group-bar-row {
        grid-template-columns: minmax(95px, 1.35fr) minmax(70px, 1.6fr) 55px;
    }

    .group-bar-value small {
        display: none;
    }

    .publisher-dropdown {
        width: calc(100vw - 46px);
    }

    .publisher-group-heading {
        gap: 10px;
    }

    .publisher-group-heading small,
    .publisher-group-count {
        display: none;
    }

    .paper-header {
        align-items: flex-start;
        gap: 10px;
    }

    .paper-footer,
    .results-header {
        align-items: flex-start;
        flex-direction: column;
    }

    .paper-link {
        padding-top: 8px;
    }

    .active-filters {
        display: flex;
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}