/* Dystonia Research Digest — Dark + Gold Branded Theme */

:root {
    --gold: #C9963C;
    --gold-light: #d4a94f;
    --gold-dark: #a67b2e;
    --charcoal: #333333;
    --dark-bg: #1a1a2e;
    --dark-surface: #16213e;
    --dark-card: #1e2a47;
    --dark-border: #2a3a5c;
    --text-primary: #e8e8e8;
    --text-secondary: #a0a0b0;
    --text-muted: #6c6c7c;
    --success: #2ecc71;
    --danger: #e74c3c;
    --info: #3498db;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.6;
}

a { color: var(--gold); text-decoration: none; }
a:hover { color: var(--gold-light); text-decoration: underline; }

/* ── Header ─────────────────────────────────────────────────────────────── */

.app-header {
    background: linear-gradient(135deg, var(--dark-surface) 0%, var(--charcoal) 100%);
    border-bottom: 3px solid var(--gold);
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.app-header .brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.app-header .brand h1 {
    font-size: 20px;
    color: var(--gold);
    font-weight: 700;
}

.app-header .brand span {
    font-size: 12px;
    color: var(--text-muted);
}

.nav-links {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 6px;
    transition: all 0.2s;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--gold);
    background: rgba(201, 150, 60, 0.1);
    text-decoration: none;
}

/* ── Container ──────────────────────────────────────────────────────────── */

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px;
}

.page-title {
    font-size: 24px;
    color: var(--gold);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--dark-border);
}

/* ── Stat Cards ─────────────────────────────────────────────────────────── */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
}

.stat-card .stat-value {
    font-size: 36px;
    font-weight: 700;
    color: var(--gold);
    display: block;
}

.stat-card .stat-label {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ── Cards ──────────────────────────────────────────────────────────────── */

.card {
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 16px;
}

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

.card-header h2 {
    font-size: 18px;
    color: var(--text-primary);
}

/* ── Digest List ────────────────────────────────────────────────────────── */

.digest-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    margin-bottom: 8px;
    transition: border-color 0.2s;
}

.digest-row:hover {
    border-color: var(--gold);
}

.digest-row .digest-date {
    font-weight: 600;
    color: var(--text-primary);
    min-width: 180px;
}

.digest-row .digest-papers {
    color: var(--gold);
    font-weight: 700;
    font-size: 18px;
    min-width: 60px;
    text-align: center;
}

.digest-row .digest-meta {
    font-size: 13px;
    color: var(--text-muted);
    display: flex;
    gap: 12px;
    align-items: center;
}

/* ── Category Header ────────────────────────────────────────────────────── */

.category-header {
    background: rgba(201, 150, 60, 0.1);
    border-left: 4px solid var(--gold);
    padding: 10px 16px;
    margin: 24px 0 12px 0;
    font-weight: 700;
    font-size: 16px;
    color: var(--gold);
    border-radius: 0 6px 6px 0;
}

/* ── Paper Card ─────────────────────────────────────────────────────────── */

.paper-card {
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 10px;
    transition: border-color 0.2s;
}

.paper-card:hover {
    border-color: var(--gold-dark);
}

.paper-title {
    font-weight: 700;
    font-size: 15px;
    color: var(--text-primary);
    margin-bottom: 6px;
}

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

.paper-meta {
    font-size: 12px;
    color: var(--text-muted);
    margin: 3px 0;
}

.paper-abstract {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 8px;
    line-height: 1.6;
    border-top: 1px solid var(--dark-border);
    padding-top: 8px;
}

/* ── Badges ─────────────────────────────────────────────────────────────── */

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    margin-right: 6px;
}

.badge-pubmed { background: rgba(46, 204, 113, 0.15); color: var(--success); }
.badge-s2 { background: rgba(52, 152, 219, 0.15); color: var(--info); }
.badge-doi { background: rgba(155, 89, 182, 0.15); color: #b388ff; }
.badge-status-completed { background: rgba(46, 204, 113, 0.15); color: var(--success); }
.badge-status-running { background: rgba(241, 196, 15, 0.15); color: #f1c40f; }
.badge-status-failed { background: rgba(231, 76, 60, 0.15); color: var(--danger); }
.badge-gold { background: rgba(201, 150, 60, 0.15); color: var(--gold); }

/* ── Buttons ────────────────────────────────────────────────────────────── */

.btn {
    display: inline-block;
    padding: 8px 18px;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}

.btn-gold {
    background: var(--gold);
    color: #1a1a2e;
}
.btn-gold:hover {
    background: var(--gold-light);
    color: #1a1a2e;
    text-decoration: none;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--gold);
    color: var(--gold);
}
.btn-outline:hover {
    background: rgba(201, 150, 60, 0.1);
    text-decoration: none;
}

.btn-danger {
    background: rgba(231, 76, 60, 0.15);
    color: var(--danger);
    border: 1px solid var(--danger);
}
.btn-danger:hover { background: rgba(231, 76, 60, 0.25); }

.btn-sm { padding: 4px 12px; font-size: 12px; }

/* ── Forms ──────────────────────────────────────────────────────────────── */

.form-group {
    margin-bottom: 14px;
}

.form-group label {
    display: block;
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 4px;
    font-weight: 500;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 8px 12px;
    background: var(--dark-surface);
    border: 1px solid var(--dark-border);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 14px;
}

.form-group input:focus, .form-group select:focus {
    border-color: var(--gold);
    outline: none;
}

.form-inline {
    display: flex;
    gap: 12px;
    align-items: flex-end;
}

.form-inline .form-group { flex: 1; margin-bottom: 0; }

/* ── Search Bar ─────────────────────────────────────────────────────────── */

.search-bar {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.search-bar input {
    flex: 1;
    padding: 10px 14px;
    background: var(--dark-card);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 15px;
}

.search-bar input:focus { border-color: var(--gold); outline: none; }

/* ── Table ──────────────────────────────────────────────────────────────── */

.table-wrapper { overflow-x: auto; }

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 10px 14px;
    text-align: left;
    border-bottom: 1px solid var(--dark-border);
}

th {
    font-size: 12px;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

td { font-size: 14px; }

tr:hover { background: rgba(201, 150, 60, 0.04); }

/* ── Pagination ─────────────────────────────────────────────────────────── */

.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 20px;
}

.pagination a, .pagination span {
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 14px;
    border: 1px solid var(--dark-border);
    color: var(--text-secondary);
}

.pagination a:hover { border-color: var(--gold); color: var(--gold); text-decoration: none; }
.pagination .current { background: var(--gold); color: #1a1a2e; border-color: var(--gold); font-weight: 700; }

/* ── Empty State ────────────────────────────────────────────────────────── */

.empty-state {
    text-align: center;
    padding: 48px 20px;
    color: var(--text-muted);
}

.empty-state h3 { color: var(--text-secondary); margin-bottom: 8px; }

/* ── Toast Notification ─────────────────────────────────────────────────── */

.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--dark-card);
    border: 1px solid var(--gold);
    border-radius: 8px;
    padding: 14px 20px;
    color: var(--text-primary);
    font-size: 14px;
    z-index: 1000;
    display: none;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ── Actions Bar ────────────────────────────────────────────────────────── */

.actions-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 10px;
}

/* ── Footer ─────────────────────────────────────────────────────────────── */

.app-footer {
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
    font-size: 12px;
    border-top: 1px solid var(--dark-border);
    margin-top: 40px;
}

.app-footer span { color: var(--gold); }

/* ── Responsive ─────────────────────────────────────────────────────────── */

@media (max-width: 768px) {
    .app-header { flex-direction: column; gap: 10px; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .digest-row { flex-direction: column; align-items: flex-start; gap: 8px; }
    .form-inline { flex-direction: column; }
    .nav-links { flex-wrap: wrap; gap: 8px; }
    .container { padding: 16px; }
}