:root {
    --bg-color: #fbfbfa;
    --text-main: #243044;
    --text-muted: #667085;
    --border-color: #dce2e9;
    --border-strong: #c6ced8;
    --accent: #111c2f;
    --accent-soft: #34445d;
    --surface: #ffffff;
    --surface-muted: #f4f6f8;
    --hover-bg: #f0f3f6;
    --font-ui: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --font-serif: "Georgia", "Times New Roman", serif;
}

html {
    font-size: 90%;
    scroll-behavior: smooth;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-ui);
    line-height: 1.58;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: min(1180px, calc(100% - 48px));
    margin: 0 auto;
}

.container-narrow {
    max-width: 760px;
}

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

a {
    color: var(--accent);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

button,
input,
select {
    font: inherit;
}

button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 2px solid #5f79a5;
    outline-offset: 3px;
}

.site-header {
    background: rgba(255, 255, 255, 0.82);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 0;
    backdrop-filter: blur(10px);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.site-title {
    color: var(--accent);
    font-size: 1.15rem;
    font-weight: 760;
    letter-spacing: 0.035em;
    text-decoration: none !important;
}

.site-subtitle {
    margin-left: 14px;
    color: var(--text-muted);
    font-size: 0.86rem;
}

.site-nav a {
    margin-left: 22px;
    font-size: 0.9rem;
    font-weight: 560;
}

.site-main {
    min-height: 64vh;
    padding: 34px 0 24px;
}

.site-footer {
    border-top: 1px solid var(--border-color);
    margin-top: 68px;
    padding: 34px 0;
    color: var(--text-muted);
    font-size: 0.86rem;
    text-align: center;
}

.footer-desc {
    margin: 8px 0;
}

.footer-links a {
    margin: 0 9px;
    color: var(--text-muted);
}

.btn {
    display: inline-flex;
    min-height: 36px;
    align-items: center;
    justify-content: center;
    padding: 7px 13px;
    border: 1px solid transparent;
    border-radius: 3px;
    cursor: pointer;
    font-size: 0.84rem;
    font-weight: 620;
    line-height: 1.2;
    text-align: center;
    text-decoration: none !important;
    transition: background-color 0.16s ease, border-color 0.16s ease, color 0.16s ease;
}

.btn-primary {
    border-color: var(--accent);
    background: var(--accent);
    color: #fff;
}

.btn-primary:hover {
    border-color: var(--accent-soft);
    background: var(--accent-soft);
}

.btn-secondary {
    border-color: var(--border-strong);
    background: transparent;
    color: var(--text-main);
}

.btn-secondary:hover {
    background: var(--hover-bg);
}

.text-action {
    padding: 0;
    border: 0;
    background: transparent;
    color: var(--accent-soft);
    cursor: pointer;
    font-size: 0.78rem;
    font-weight: 650;
}

.text-action:hover {
    text-decoration: underline;
}

h1,
h2,
h3 {
    color: var(--accent);
    font-family: var(--font-serif);
    font-weight: 600;
}

.repo-intro {
    margin-bottom: 30px;
    padding: 12px 0 20px;
}

.repo-intro h1 {
    margin-bottom: 8px;
    font-size: 2rem;
}

.repo-intro p {
    max-width: 720px;
    color: var(--text-muted);
    font-size: 1.02rem;
}

.controls-bar {
    display: flex;
    flex-direction: column;
    gap: 13px;
    margin-bottom: 18px;
    padding: 16px 0;
    border-top: 1px solid var(--border-strong);
    border-bottom: 1px solid var(--border-color);
}

.search-group input {
    width: 100%;
    padding: 9px 10px;
    border: 1px solid var(--border-strong);
    border-radius: 2px;
    background: var(--surface);
    color: var(--text-main);
    font-size: 0.93rem;
}

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

.filter-group select {
    padding: 7px 9px;
    border: 1px solid var(--border-strong);
    border-radius: 2px;
    background: var(--surface);
    color: var(--text-main);
    font-family: var(--font-ui);
}

.results-header {
    margin-bottom: 4px;
    color: var(--text-muted);
    font-size: 0.84rem;
}

.publications-list {
    display: flex;
    flex-direction: column;
}

.pub-card {
    padding: 20px 0 22px;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.16s ease;
}

.pub-card:first-child {
    border-top: 1px solid var(--border-color);
}

.pub-card:hover {
    background: linear-gradient(90deg, rgba(240, 243, 246, 0.65), rgba(240, 243, 246, 0));
}

.pub-meta-top {
    display: flex;
    flex-wrap: wrap;
    gap: 11px;
    margin-bottom: 7px;
    color: var(--text-muted);
    font-size: 0.74rem;
    letter-spacing: 0.025em;
    text-transform: uppercase;
}

.pub-title {
    margin-bottom: 4px;
    font-size: 1.18rem;
}

.pub-title a {
    color: var(--accent);
}

.pub-authors {
    margin-bottom: 8px;
    color: var(--text-main);
    font-size: 0.9rem;
}

.pub-abstract-snippet {
    display: -webkit-box;
    max-width: 900px;
    margin-bottom: 11px;
    overflow: hidden;
    color: var(--text-muted);
    font-size: 0.89rem;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.pub-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}

.tag {
    padding: 2px 7px;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    color: var(--text-muted);
    font-size: 0.7rem;
}

.empty-state {
    padding: 34px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-muted);
    text-align: center;
}

.empty-state .btn {
    margin-top: 12px;
}

.hidden {
    display: none !important;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
    color: var(--text-muted);
    font-size: 0.8rem;
}

.breadcrumb a {
    color: var(--text-muted);
}

.publication-layout {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(320px, 1fr);
    border-top: 1px solid var(--border-strong);
    border-bottom: 1px solid var(--border-strong);
}

.record-container {
    min-width: 0;
    padding: 30px 42px 38px 0;
}

.stats-actions-container {
    min-width: 0;
    padding: 30px 0 38px 42px;
    border-left: 1px solid var(--border-color);
}

.record-meta-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 18px;
}

.badge {
    padding: 3px 7px;
    border: 1px solid var(--border-color);
    border-radius: 2px;
    background: transparent;
    color: var(--text-muted);
    font-size: 0.72rem;
    font-weight: 620;
    letter-spacing: 0.025em;
    text-transform: uppercase;
}

.status-indicator {
    color: var(--text-muted);
    font-size: 0.76rem;
}

.record-title {
    max-width: 660px;
    margin-bottom: 5px;
    font-size: clamp(1.48rem, 1.85vw, 1.88rem);
    line-height: 1.14;
}

.record-subtitle {
    margin-bottom: 13px;
    color: var(--text-muted);
    font-family: var(--font-ui);
    font-size: 1.08rem;
    font-weight: 420;
    line-height: 1.45;
}

.record-author {
    color: var(--text-main);
    font-size: 0.98rem;
}

.record-section,
.record-details,
.linked-resources {
    margin-top: 30px;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.record-section h3,
.record-details h3,
.linked-resources h3 {
    margin-bottom: 13px;
    color: var(--text-muted);
    font-family: var(--font-ui);
    font-size: 0.76rem;
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
}

.record-abstract p {
    color: #303b4c;
    font-family: var(--font-serif);
    font-size: 1.02rem;
    line-height: 1.75;
}

.record-actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 8px;
}

.metadata-list {
    display: grid;
    grid-template-columns: minmax(112px, 0.34fr) minmax(0, 1fr);
    column-gap: 22px;
}

.metadata-list dt,
.metadata-list dd {
    padding: 9px 0;
    border-bottom: 1px solid #e8ecf0;
}

.metadata-list dt {
    color: var(--text-muted);
    font-size: 0.76rem;
    font-weight: 650;
}

.metadata-list dd {
    min-width: 0;
    overflow-wrap: anywhere;
    color: var(--text-main);
    font-size: 0.86rem;
}

.related-list {
    list-style: none;
}

.related-list li {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    padding: 10px 0;
    border-bottom: 1px solid #e8ecf0;
}

.related-list li:first-child {
    border-top: 1px solid #e8ecf0;
}

.related-list a {
    font-size: 0.88rem;
    font-weight: 560;
}

.resource-type {
    flex: 0 0 auto;
    color: var(--text-muted);
    font-size: 0.7rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.section-heading-row {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 17px;
}

.section-heading-row h3 {
    margin-bottom: 4px;
}

.section-note {
    max-width: 540px;
    color: var(--text-muted);
    font-size: 0.79rem;
}

.citation-style-control {
    display: flex;
    flex: 0 0 238px;
    flex-direction: column;
    gap: 5px;
    color: var(--text-muted);
    font-size: 0.72rem;
    font-weight: 650;
}

.citation-style-control select {
    width: 100%;
    padding: 7px 8px;
    border: 1px solid var(--border-strong);
    border-radius: 2px;
    background: var(--surface);
    color: var(--text-main);
    font-size: 0.8rem;
}

.citation-output-group {
    margin-top: 12px;
    border-top: 1px solid var(--border-color);
}

.citation-output-group-compact {
    margin-top: 16px;
}

.citation-output-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 9px 0 6px;
    color: var(--text-muted);
    font-size: 0.72rem;
    font-weight: 680;
    letter-spacing: 0.035em;
    text-transform: uppercase;
}

.citation-output {
    min-height: 112px;
    padding: 20px 22px;
    border: 1px solid var(--border-strong);
    background: #ffffff;
    color: #111111;
    font-family: "Times New Roman", Times, serif;
    font-size: 12pt;
    line-height: 2;
    overflow-wrap: anywhere;
    box-shadow: 0 1px 2px rgba(17, 28, 47, 0.04);
}

.citation-output p {
    margin: 0;
}

.citation-output em {
    font-style: italic;
}

.citation-output-group-compact .citation-output {
    min-height: 76px;
}

.citation-disclaimer {
    margin-top: 11px;
    color: var(--text-muted);
    font-size: 0.72rem;
}

.prose h1 {
    margin-bottom: 16px;
}

.prose h2 {
    margin-top: 28px;
    margin-bottom: 8px;
}

.prose p {
    margin-bottom: 17px;
}

.lead {
    color: var(--text-muted);
    font-family: var(--font-serif);
    font-size: 1.1rem;
}

.mt-4 {
    margin-top: 16px;
}

@media (max-width: 900px) {
    .publication-layout {
        grid-template-columns: 1fr;
    }

    .record-container {
        padding: 28px 0 32px;
    }

    .stats-actions-container {
        padding: 28px 0 32px;
        border-top: 1px solid var(--border-color);
        border-left: 0;
    }

    .record-actions {
        justify-content: flex-start;
    }
}

@media (max-width: 680px) {
    .container {
        width: min(100% - 30px, 1180px);
    }

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

    .site-subtitle {
        margin-left: 10px;
    }

    .site-nav a {
        margin-right: 18px;
        margin-left: 0;
    }

    .site-main {
        padding-top: 26px;
    }

    .filter-group select,
    .filter-group .btn {
        flex: 1 1 145px;
    }

   .record-title {
        font-size: 1.78rem;
    }

    .record-actions {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }

    .metadata-list {
        grid-template-columns: 1fr;
    }

    .metadata-list dt {
        padding-bottom: 1px;
        border-bottom: 0;
    }

    .metadata-list dd {
        padding-top: 2px;
    }

    .section-heading-row {
        align-items: stretch;
        flex-direction: column;
        gap: 13px;
    }

    .citation-style-control {
        flex-basis: auto;
        width: 100%;
    }

    .related-list li {
        align-items: flex-start;
        flex-direction: column;
        gap: 3px;
    }
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    * {
        transition: none !important;
    }
}