/* ============================================================================
 * scientific-news.css — Dashboard de Noticias Científicas (Lote 12 G1)
 * ----------------------------------------------------------------------------
 * Extraído del HEREDOC CSS de scientific-news.php (~767 líneas).
 *
 * Cambios respecto al inline original:
 *   - :root local de 24 tokens REDUCIDO a 3 que NO tienen equivalente exacto
 *     en _tokens.css (--amber, --amber-dark, --evidence-high).
 *   - Resto de tokens locales sustituidos por canónicos:
 *       --amber-light  → --color-amber-light    (exacto, #fbbf24)
 *       --blue         → --color-blue-400       (exacto, #3b82f6)
 *       --green        → --color-green          (exacto, #10b981)
 *       --green-dark   → --color-green-dark     (var → success #059669)
 *       --green-light  → --color-green-light    (exacto, #34d399)
 *       --pink         → --color-pink           (exacto, #ec4899)
 *       --pink-light   → --color-pink-light     (exacto, #f472b6)
 *       --teal         → --color-teal           (exacto, #0d9488)
 *       --teal-light   → --color-teal-light     (exacto, #14b8a6)
 *       --violet       → --color-violet         (exacto, #8b5cf6)
 *       --violet-dark  → --color-violet-dark    (exacto, #7c3aed)
 *       --violet-light → --color-violet-light   (exacto, #a78bfa)
 *       --primary      → --color-blue-400       (alias 1:1)
 *       --primary-dark → --color-blue-500       (alias 1:1)
 *       --bg-primary   → --bg-body              (mismo color #f8fafc)
 *       --bg-secondary → eliminado (0 usos)
 *       --bg-card, --bg-subtle, --border-color, --text-primary,
 *       --text-secondary: ya canónicos directos.
 *   - Hex hardcoded migrados:
 *       #fff, #ffffff, white  → var(--color-white)
 *       #ef4444 → var(--color-red)
 *       #dc2626 → var(--color-red-dark)
 *       #2563eb → var(--color-blue-500)
 *       #10b981 → var(--color-green)
 *       #059669 → var(--color-success)
 *       #b45309 → var(--color-warning-dark)
 *       #6b7280 → var(--color-slate-500)
 *       #9ca3af → var(--color-slate-400)
 *       #eab308 → var(--evidence-high) (token local semántico mantenido)
 *   - Bug corregido: el HEREDOC tenía "body { background: var(--bg-primary); }"
 *     pegado a "body/* ===== Hero Section ===== *_/" sin newline. Ahora separado.
 *   - 4 utilities G1 replicadas al final.
 *
 * Cromática (decisión Lote 12): MANTENIDA multi-color rica original.
 *   Hero gradient: blue-400 → blue-500 (la página tenía "primary" que era
 *   blue, no es el gradient teal/violet/pink que dice el docblock del PHP
 *   original; la cromática multicolor está en stat-card hover-bar y otros
 *   elementos, no en el hero).
 * ============================================================================ */

:root {
    /* Tokens locales SIN equivalente exacto en _tokens.css */
    --amber:         #f59e0b;   /* --color-amber resuelve a #d97706, distinto */
    --amber-dark:    #d97706;   /* coincide con --color-warning, mantenido literal por claridad */
    --evidence-high: #eab308;   /* amarillo semántico "alta evidencia" en news cards */
}


body { background-color: var(--bg-body); }

/* ===== Hero Section ===== */
.news-hero {
    background: linear-gradient(135deg, var(--color-blue-400) 0%, var(--color-blue-500) 100%);
    padding: 50px 0;
    margin-bottom: 30px;
    position: relative;
    overflow: hidden;
}

.news-hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 70%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 50%);
    animation: float 15s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(20px, -20px); }
}

.news-hero h1 {
    color: var(--color-white);
    font-weight: 800;
    font-size: 2.2rem;
    margin-bottom: 8px;
    position: relative;
    z-index: 2;
}

.news-hero p {
    color: rgba(255,255,255,0.9);
    font-size: 1.1rem;
    margin-bottom: 0;
    position: relative;
    z-index: 2;
}

.hero-actions {
    position: relative;
    z-index: 2;
}

.btn-hero {
    background: rgba(255,255,255,0.15);
    border: 1px solid rgba(255,255,255,0.3);
    color: var(--color-white);
    border-radius: 10px;
    padding: 10px 18px;
    font-weight: 600;
    transition: all 0.3s;
    backdrop-filter: blur(10px);
}

.btn-hero:hover {
    background: var(--color-white);
    color: var(--color-blue-500);
    border-color: var(--color-white);
}

.btn-rss {
    background: linear-gradient(135deg, var(--amber), var(--color-amber-light));
    border: none;
    color: var(--color-white);
}

.btn-rss:hover {
    background: linear-gradient(135deg, var(--amber-dark), var(--amber));
    color: var(--color-white);
    transform: translateY(-2px);
}

/* ===== Stats Cards ===== */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    text-align: center;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-teal), var(--color-violet), var(--color-pink));
    transform: scaleX(0);
    transition: transform 0.3s;
}

.stat-card:hover {
    border-color: var(--color-blue-500);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(139, 92, 246, 0.15);
}

.stat-card:hover::before {
    transform: scaleX(1);
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-teal) 0%, var(--color-violet) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    margin-top: 5px;
}

/* ===== Filters Section ===== */
.filters-section {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 20px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
}

.filters-section label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.source-chip {
    padding: 8px 16px;
    border: 2px solid var(--border-color);
    border-radius: 25px;
    background: var(--bg-card);
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
}

.source-chip:hover {
    border-color: var(--color-blue-500);
    color: var(--color-blue-500);
}

.source-chip.active {
    background: linear-gradient(135deg, var(--color-blue-700), var(--color-blue-500));
    color: var(--color-white);
    border-color: var(--color-blue-700);
}

/* ===== View Toggle ===== */
.view-toggle {
    display: flex;
    gap: 3px;
    background: var(--bg-body);
    padding: 4px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.view-toggle button {
    padding: 6px 14px;
    border: none;
    background: transparent;
    border-radius: 8px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.2s;
}

.view-toggle button.active {
    background: linear-gradient(135deg, var(--color-blue-700), var(--color-blue-500));
    color: var(--color-white);
}

/* ===== News Cards ===== */
/* ===== Magazine Indicators ===== */
.card-badges {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    margin-bottom: 10px;
}
.badge-new {
    background: linear-gradient(135deg, var(--color-red), var(--color-red-dark));
    color: var(--color-white);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 6px;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    animation: badgePulse 2s ease-in-out infinite;
}
@keyframes badgePulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.75; }
}
.badge-trending {
    background: linear-gradient(135deg, var(--amber), var(--amber-dark));
    color: var(--color-white);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 3px;
}
.badge-evidence {
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 6px;
}
.evidence-high {
    background: rgba(234,179,8,0.12);
    color: var(--color-warning-dark);
    border: 1px solid rgba(234,179,8,0.3);
}
.evidence-medium {
    background: rgba(59,130,246,0.1);
    color: var(--color-blue-500);
    border: 1px solid rgba(59,130,246,0.2);
}
.evidence-low {
    background: rgba(107,114,128,0.1);
    color: var(--color-slate-500);
    border: 1px solid rgba(107,114,128,0.2);
}
.badge-openaccess {
    background: linear-gradient(135deg, var(--color-green), var(--color-success));
    color: var(--color-white);
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 3px;
}
.news-card-enhanced {
    border-left: 4px solid transparent;
}
.news-card-enhanced.ev-high { border-left-color: var(--evidence-high); }
.news-card-enhanced.ev-medium { border-left-color: var(--color-blue-400); }
.news-card-enhanced.ev-low { border-left-color: var(--color-slate-400); }
.read-time {
    font-size: 0.78rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}
.read-time i { font-size: 0.82rem; }
.news-card {
    border: 2px solid var(--border-color);
    border-radius: 20px;
    transition: all 0.3s ease;
    margin-bottom: 20px;
    background: var(--bg-card);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    overflow: hidden;
}

.news-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 15px 40px rgba(139, 92, 246, 0.15);
    border-color: var(--color-blue-500);
}

.news-card.compact .news-body { display: none; }

.news-header {
    padding: 22px;
    border-bottom: 1px solid var(--border-color);
}

.news-title {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1.15rem;
    line-height: 1.4;
    margin-bottom: 12px;
    cursor: pointer;
    transition: color 0.2s;
}

.news-title:hover {
    color: var(--color-blue-700);
}

.news-meta {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    flex-wrap: wrap;
}

.news-meta i {
    color: var(--color-blue-500);
}

.news-body {
    padding: 18px 22px 22px;
}

.news-abstract {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 18px;
    font-size: 0.95rem;
}

/* ===== Tags ===== */
.news-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 18px;
}

.card-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 14px;
}
.card-metrics .metric-chip {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--bg-body);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.73rem;
    line-height: 1.3;
    transition: background 0.2s;
}
.card-metrics .metric-chip:hover { background: var(--bg-subtle); }
.card-metrics .metric-chip i { font-size: 0.7rem; }
.card-metrics .mc-label { color: var(--text-secondary); }
.gene-tag {
    background: linear-gradient(135deg, var(--color-blue-700), var(--color-blue-500));
    color: var(--color-white);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 600;
}

.treatment-tag {
    background: linear-gradient(135deg, var(--color-blue-700), var(--color-blue-500));
    color: var(--color-white);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 600;
}

.mutation-tag {
    background: linear-gradient(135deg, var(--color-blue-700), var(--color-blue-500));
    color: var(--color-white);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 600;
}

.study-type-tag {
    background: linear-gradient(135deg, var(--amber), var(--color-amber-light));
    color: var(--color-white);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* ===== News Actions ===== */
.news-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 10px;
}

.action-buttons {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.btn-action {
    padding: 7px 14px;
    border-radius: 10px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 2px solid var(--border-color);
    background: var(--bg-body);
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s;
}

.btn-action:hover {
    background: linear-gradient(135deg, var(--color-blue-700), var(--color-blue-500));
    color: var(--color-white);
    border-color: var(--color-blue-500);
}

.btn-action.favorited {
    background: linear-gradient(135deg, var(--amber), var(--color-amber-light));
    border-color: var(--amber);
    color: var(--color-white);
}

.btn-action.has-note {
    background: linear-gradient(135deg, var(--color-blue-700), var(--color-blue-500));
    border-color: var(--color-blue-700);
    color: var(--color-white);
}

/* ===== Share Dropdown ===== */
.share-dropdown {
    position: relative;
    display: inline-block;
}

.share-menu {
    display: none;
    position: absolute;
    bottom: 100%;
    left: 0;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 14px;
    padding: 10px;
    min-width: 170px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.15);
    z-index: 100;
}

.share-dropdown:hover .share-menu {
    display: block;
}

.share-menu a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 0.85rem;
    border-radius: 8px;
    transition: all 0.2s;
}

.share-menu a:hover {
    background: var(--bg-body);
}

.share-menu a svg, .share-menu a i {
    width: 18px;
    text-align: center;
    flex-shrink: 0;
}

/* ===== Relevance Score ===== */
.relevance-score {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.score-bar {
    width: 70px;
    height: 8px;
    background: var(--border-color);
    border-radius: 4px;
    overflow: hidden;
}

.score-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-teal), var(--color-violet));
    border-radius: 4px;
}

/* ===== Personal Relevance Badge ===== */
.personal-relevance {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 10px;
    font-size: 0.82rem;
    margin-top: 8px;
    background: linear-gradient(135deg, rgba(236,72,153,0.06), rgba(139,92,246,0.06));
    border: 1px solid rgba(236,72,153,0.15);
}
.personal-relevance .pr-icon {
    font-size: 1.1rem;
}
.personal-relevance .pr-score {
    font-weight: 700;
    font-size: 0.95rem;
}
.personal-relevance .pr-label {
    color: var(--text-secondary);
    font-size: 0.78rem;
}
.personal-relevance .pr-reasons {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-left: auto;
}
.personal-relevance .pr-tag {
    font-size: 0.7rem;
    padding: 1px 7px;
    border-radius: 8px;
    font-weight: 600;
}
.personal-relevance .pr-tag-gene {
    background: rgba(37, 99, 235, 0.12);
    color: var(--color-blue-500);
}
.personal-relevance .pr-tag-treatment {
    background: rgba(37, 99, 235, 0.12);
    color: var(--color-blue-700);
}
.personal-relevance .pr-tag-msi {
    background: rgba(59, 130, 246, 0.12);
    color: var(--color-blue-400);
}
.pr-high .pr-score { color: var(--color-green-dark); }
.pr-medium .pr-score { color: var(--amber-dark); }
.pr-low .pr-score { color: var(--color-slate-500); }
#profileOnly:checked { background-color: var(--color-blue-500) !important; border-color: var(--color-blue-500) !important; }
.profile-filter-toggle label { color: var(--color-slate-500); transition: color 0.2s; }
.profile-filter-toggle:has(#profileOnly:checked) label { color: var(--color-blue-700); font-weight: 600; }
.setup-profile-banner {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    margin-bottom: 20px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(236,72,153,0.06), rgba(139,92,246,0.06));
    border: 1px dashed rgba(139,92,246,0.3);
    font-size: 0.88rem;
    color: var(--text-primary);
}
.setup-profile-banner i { font-size: 1.3rem; color: var(--color-blue-700); }
.setup-profile-banner a { color: var(--color-blue-700); font-weight: 600; text-decoration: none; }
.setup-profile-banner a:hover { text-decoration: underline; }

/* ===== Sidebar Panel ===== */
.sidebar-panel {
    position: fixed;
    top: 0;
    right: -420px;
    width: 420px;
    height: 100vh;
    background: var(--bg-card);
    border-left: 2px solid var(--border-color);
    z-index: 1050;
    transition: right 0.3s ease;
    overflow-y: auto;
    padding: 25px;
}

.sidebar-panel.open {
    right: 0;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    z-index: 1040;
    backdrop-filter: blur(3px);
}

.sidebar-overlay.open {
    display: block;
}

/* ===== Timeline ===== */
.timeline-container {
    padding: 20px 0;
}

.timeline-bar {
    display: flex;
    align-items: flex-end;
    gap: 5px;
    height: 100px;
    margin-bottom: 12px;
}

.timeline-bar-item {
    flex: 1;
    background: linear-gradient(135deg, var(--color-teal), var(--color-violet));
    border-radius: 4px 4px 0 0;
    min-height: 5px;
    cursor: pointer;
    transition: opacity 0.2s;
}

.timeline-bar-item:hover {
    opacity: 0.8;
}

.timeline-labels {
    display: flex;
    gap: 5px;
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.timeline-labels span {
    flex: 1;
    text-align: center;
}

/* ===== Alert Badge ===== */
.alert-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 15px;
    background: var(--bg-body);
    border: 2px solid var(--border-color);
    border-radius: 25px;
    margin: 5px;
    font-size: 0.85rem;
}

.alert-badge .remove-alert {
    cursor: pointer;
    color: var(--color-danger);
    font-weight: bold;
    font-size: 1.1rem;
}

/* ===== Theme Toggle ===== */
/* ===== Pagination ===== */
#paginationContainer .btn {
    border-radius: 10px;
    font-weight: 600;
}

#paginationContainer .btn-outline-primary {
    border-color: var(--color-blue-500);
    color: var(--color-blue-500);
}

#paginationContainer .btn-outline-primary:hover {
    background: var(--color-blue-500);
    border-color: var(--color-blue-500);
    color: var(--color-white);
}

/* ===== Modal Styling ===== */
.modal-content {
    border-radius: 20px;
    border: 2px solid var(--border-color);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    padding: 20px 25px;
}

.modal-body {
    padding: 25px;
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    padding: 15px 25px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .sidebar-panel {
        width: 100%;
        right: -100%;
    }
    
    .stats-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-hero h1 {
        font-size: 1.8rem;
    }
}

/* ─── Subscription modal (extraído del HTML inline pre-Lote 12) ────────────
 * Estilos del modal de estado de suscripción al newsletter, mostrado tras
 * verificar email o pulsar enlace de unsubscribe. 4 estados por color:
 * verified, invalid, error, unsubscribed. */
.subscription-modal-content {
    border-radius: 20px;
    overflow: hidden;
    border: none;
}

.subscription-modal-header {
    padding: 30px;
    text-align: center;
}
.subscription-modal-header--verified     { background: linear-gradient(135deg, var(--color-teal) 0%, var(--color-violet) 50%, var(--color-pink) 100%); }
.subscription-modal-header--invalid      { background: var(--color-danger-soft); }
.subscription-modal-header--error        { background: var(--color-warning-soft); }
.subscription-modal-header--unsubscribed { background: #e0e7ff; }   /* lila claro: sin canónico exacto, decisión estética modal unsubscribe */

.subscription-modal-icon {
    font-size: 4rem;
}
.subscription-modal-icon--verified     { color: var(--color-white); }
.subscription-modal-icon--invalid      { color: var(--color-danger); }
.subscription-modal-icon--error        { color: var(--color-warning); }
.subscription-modal-icon--unsubscribed { color: #6366f1; }   /* indigo: sin canónico exacto, par con --unsubscribed bg */

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

.btn-subscription-action {
    background: linear-gradient(135deg, var(--color-blue-700), var(--color-blue-500));
    color: var(--color-white);
    border-radius: 10px;
    padding: 12px 40px;
    border: none;
}

.btn-subscription-secondary {
    border-radius: 10px;
    padding: 12px 40px;
}

/* ─── Filter helpers (estilos extraídos del HTML inline) ───────────────────── */
.filter-checkbox-label { font-size: 0.85rem; }
.sort-filter-narrow { width: auto; }
.profile-filter-toggle--hidden { display: none !important; }
.checkbox-styled { background-color: var(--border-color); }

.open-access-icon { color: var(--color-green); }

.btn-timeline-toggle {
    background: linear-gradient(135deg, var(--amber), var(--color-amber-light));
    color: var(--color-white);
    border: none;
    border-radius: 10px;
    padding: 8px 16px;
}

.timeline-card {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 16px;
}

.articles-spinner { color: var(--color-blue-500); }

.sidebar-panel-title { margin: 0; font-weight: 700; }

.pagination-wrapper--hidden { display: none !important; }

.modal-content-themed { background: var(--bg-card); }

/* ─── Sidebar panels (favoritos / alertas / notas) ──────────────────────────
 * Estilos extraídos del JS HEREDOC (eran style="..." inline en strings JS
 * que generaban tarjetas dentro de los paneles). Después del refactor del
 * Lote 12 los tokens viejos --bg-primary, --violet, --teal ya no existen
 * en el CSS, por lo que esos style="..." inline se rompieron. Estas clases
 * resuelven con tokens canónicos. */

.indicator-favorited { color: var(--amber); }
.indicator-has-note  { color: var(--color-blue-500); }

.panel-spinner { color: var(--color-blue-500); }

.panel-card {
    background: var(--bg-body);
    border: 1px solid var(--border-color);
    border-radius: 12px;
}

.panel-fav-link  { color: var(--color-blue-700); }
.panel-note-link { color: var(--color-blue-700); }

.btn-add-alert {
    background: var(--color-blue-500);
    color: var(--color-white);
    border: none;
}
.btn-add-alert:hover {
    background: var(--color-blue-700);
    color: var(--color-white);
}

/* ─── Article modal: abstract formateado ──────────────────────────────────── */
.abstract-formatted {
    background: linear-gradient(135deg, var(--bg-body) 0%, var(--bg-subtle) 100%);
    border-radius: 12px;
    padding: 20px 24px;
    border-left: 4px solid var(--color-blue-500);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

.abstract-lead-paragraph {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--color-slate-700);
}

.abstract-paragraph {
    line-height: 1.8;
    color: var(--color-slate-600);
    text-align: justify;
}

/* ─── Scroll-to-top button (extraído del HTML inline final del PHP) ────────
 * Antes: <button style="display:none;position:fixed;bottom:30px;..." onclick="...">
 * Ahora: clase .scroll-top-btn + .scroll-top-btn--visible aplicada vía JS.
 */
.scroll-top-btn {
    display: none;
    position: fixed;
    bottom: 30px;
    right: 30px;
    z-index: 999;
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: none;
    background: linear-gradient(135deg, var(--color-blue-700), var(--color-blue-500));
    color: var(--color-white);
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(13, 148, 136, 0.35);
    transition: all 0.3s;
    opacity: 0;
}

.scroll-top-btn--visible {
    display: block;
    opacity: 1;
}

.scroll-top-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(13, 148, 136, 0.5);
}

/* ============================================================================
 * Utility classes G1 (replicadas en cada archivo refactor hasta que se
 * cree _components.css en Fase 4/G3 — decisión §4 HANDOFF v2)
 * ============================================================================ */
.grad-care     { background: linear-gradient(135deg, #f59e0b, var(--color-red)); }
.grad-tech     { background: linear-gradient(135deg, var(--color-blue-400), var(--color-violet-dark)); }
.grad-research { background: linear-gradient(135deg, var(--color-green), var(--color-success)); }
.grad-control  { background: linear-gradient(135deg, var(--color-violet-dark), var(--color-pink)); }