/* Digital Library of Alexandria - arXiv-inspired styles */

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

:root {
    --bg: #f5f5f5;
    --bg-card: #ffffff;
    --text: #222;
    --text-muted: #666;
    --link: #1a5276;
    --link-hover: #2980b9;
    --border: #ddd;
    --accent: #1a5276;
    --accent-light: #e8f0fe;
    --danger: #c0392b;
    --success: #27ae60;
    --font: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    --font-mono: 'Consolas', 'Courier New', monospace;
    --radius: 4px;
    --max-width: 1200px;
}

html {
    font-size: 15px;
}

body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

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

a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

/* Top Navigation */
.topnav {
    background: var(--accent);
    color: #fff;
    padding: 0 1rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.nav-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 50px;
}

.logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: #fff !important;
    text-decoration: none !important;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: 1.25rem;
    align-items: center;
}

.nav-links a {
    color: rgba(255,255,255,0.9) !important;
    font-size: 0.9rem;
    text-decoration: none !important;
    white-space: nowrap;
}

.nav-links a:hover {
    color: #fff !important;
    text-decoration: underline !important;
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 1.5rem 1rem;
    flex: 1;
    width: 100%;
}

/* Footer */
.footer {
    background: var(--accent);
    color: rgba(255,255,255,0.8);
    padding: 1rem;
    margin-top: auto;
    font-size: 0.85rem;
}

.footer-inner {
    max-width: var(--max-width);
    margin: 0 auto;
    text-align: center;
}

/* Layouts */
.home-layout,
.work-layout,
.search-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 2rem;
}

@media (max-width: 800px) {
    .home-layout,
    .work-layout,
    .search-layout {
        grid-template-columns: 1fr;
    }
}

/* Sidebar */
.sidebar {
    font-size: 0.9rem;
}

.sidebar h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent);
    color: var(--accent);
}

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

.category-list li {
    margin-bottom: 0.25rem;
}

.category-list a {
    display: block;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius);
    font-size: 0.85rem;
}

.category-list a:hover,
.category-list a.active {
    background: var(--accent-light);
    text-decoration: none;
}

/* Metadata sidebar */
.work-sidebar .metadata dt {
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.work-sidebar .metadata dd {
    margin-left: 0;
    font-size: 0.9rem;
}

.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
}

.tag {
    background: var(--accent-light);
    color: var(--accent);
    padding: 0.1rem 0.5rem;
    border-radius: 3px;
    font-size: 0.8rem;
}

.download-box {
    margin-top: 1rem;
}

.owner-actions {
    margin-top: 1rem;
}

.owner-actions h4 {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

.owner-actions .btn {
    margin-bottom: 0.35rem;
}

/* Work entry list */
.work-entry {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem;
    margin-bottom: 0.75rem;
}

.work-entry-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
}

.work-entry-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.work-entry-meta span + span::before {
    content: ' | ';
}

.work-entry-abstract {
    font-size: 0.9rem;
    color: #444;
}

/* Work abstract page */
.work-title {
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 0.5rem;
}

.work-authors {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.work-abstract {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 1.5rem;
}

.work-abstract h3 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
    color: var(--accent);
}

.work-abstract p {
    font-size: 0.95rem;
    line-height: 1.7;
}

.work-versions h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}

.version-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}

.version-table th {
    background: var(--accent);
    color: #fff;
    padding: 0.5rem 0.75rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.8rem;
}

.version-table td {
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--border);
}

.version-table tr:last-child td {
    border-bottom: none;
}

.version-table .actions {
    display: flex;
    gap: 0.35rem;
    align-items: center;
}

.inline-form {
    display: inline;
}

.work-preview {
    margin-top: 1.5rem;
}

.work-preview h3 {
    font-size: 1.1rem;
    margin-bottom: 0.75rem;
}

.pdf-viewer {
    width: 100%;
    height: 600px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.45rem 1rem;
    font-size: 0.9rem;
    font-family: var(--font);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-card);
    color: var(--text);
    cursor: pointer;
    text-decoration: none !important;
    transition: all 0.15s;
    line-height: 1.4;
}

.btn:hover {
    background: #eee;
    color: var(--text);
}

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

.btn-primary:hover {
    background: #154360;
}

.btn-danger {
    background: var(--danger);
    color: #fff !important;
    border-color: var(--danger);
}

.btn-danger:hover {
    background: #a93226;
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
}

.btn-sm {
    padding: 0.25rem 0.65rem;
    font-size: 0.8rem;
}

/* Forms */
.form-page {
    max-width: 700px;
}

.form-page-narrow {
    max-width: 450px;
}

.subtitle {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
}

.standard-form {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.35rem;
    font-size: 0.9rem;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.55rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: var(--font);
    font-size: 0.95rem;
    background: #fff;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group input[type="file"] {
    display: block;
    margin-top: 0.35rem;
    font-size: 0.9rem;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-light);
}

.help-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-footer {
    margin-top: 1rem;
    text-align: center;
    font-size: 0.9rem;
}

/* Search */
.search-form {
    margin-bottom: 1rem;
}

.search-bar {
    display: flex;
    gap: 0.5rem;
}

.search-bar input[type="text"] {
    flex: 1;
    padding: 0.55rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: var(--font);
    font-size: 1rem;
}

.search-bar input[type="text"]:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-light);
}

.result-count {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

/* Pagination */
.pagination {
    display: flex;
    gap: 0.35rem;
    justify-content: center;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.pagination a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 2rem;
    padding: 0.3rem 0.5rem;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.85rem;
    background: var(--bg-card);
}

.pagination a:hover {
    background: var(--accent-light);
    text-decoration: none;
}

.pagination a.active {
    background: var(--accent);
    color: #fff !important;
    border-color: var(--accent);
}

/* Errors */
.errors {
    background: #fce4e4;
    border: 1px solid var(--danger);
    border-radius: var(--radius);
    padding: 0.75rem 1rem;
    margin-bottom: 1rem;
}

.error {
    color: var(--danger);
    font-size: 0.9rem;
}

/* Empty state */
.empty-state {
    text-align: center;
    color: var(--text-muted);
    padding: 3rem 1rem;
    font-size: 1.1rem;
}

/* Headings */
h1 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text);
}