/* ==========================================================================
   OEM CMS Core — Admin & Newsroom Design System
   v2 — Layout de escritorio (sidebar + topbar), tarjetas de estadísticas,
   tablas de datos, formularios y microinteracciones consistentes.
   ========================================================================== */

:root {
    /* Paleta base (nombres originales conservados para no romper páginas existentes) */
    --primary: #0f172a;
    --primary-light: #1e293b;
    --accent: #d97706;
    --accent-hover: #b45309;
    --gold: #f59e0b;
    --bg: #f4f6fb;
    --card-bg: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e6eaf1;
    --radius: 14px;
    --shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
    --shadow-hover: 0 18px 32px -4px rgba(15, 23, 42, 0.14);
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);

    /* Nuevos tokens para el layout de admin */
    --sidebar-w: 264px;
    --topbar-h: 64px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --success: #16a34a;
    --success-bg: #dcfce7;
    --warning: #b45309;
    --warning-bg: #fef3c7;
    --info: #0369a1;
    --info-bg: #e0f2fe;
    --danger: #dc2626;
    --danger-bg: #fee2e2;
    --neutral-bg: #f1f5f9;
}

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

html { -webkit-font-smoothing: antialiased; }

body {
    font-family: 'Inter', 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg);
    color: var(--text-main);
    line-height: 1.6;
}

a { color: inherit; }
img { max-width: 100%; }

/* ==========================================================================
   Elementos base — así las páginas que aún usan estilos en línea heredan
   una apariencia consistente sin necesidad de reescribirlas por completo.
   ========================================================================== */
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

th {
    text-align: left;
    font-weight: 700;
    letter-spacing: 0.02em;
}

td, th { padding: 14px; }

tbody tr {
    border-bottom: 1px solid var(--border);
    transition: var(--transition);
}

tbody tr:hover { background: #fafbfe; }

input, select, textarea {
    font-family: inherit;
    font-size: 14px;
    color: var(--text-main);
}

input[type="text"], input[type="email"], input[type="password"],
input[type="number"], input[type="date"], input[type="url"],
input[type="search"], select, textarea {
    width: 100%;
    padding: 11px 14px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: #f8fafc;
    outline: none;
    transition: var(--transition);
}

input:focus, select:focus, textarea:focus {
    border-color: var(--accent);
    background: #ffffff;
    box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.15);
}

/* ==========================================================================
   Layout de administración: sidebar fija + topbar + contenido
   ========================================================================== */
.admin-shell {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    width: var(--sidebar-w);
    flex-shrink: 0;
    background: linear-gradient(180deg, var(--primary) 0%, #0b1222 100%);
    color: #e2e8f0;
    padding: 22px 16px;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.admin-sidebar .brand-logo { padding: 4px 8px 14px; border-bottom: 1px solid rgba(255,255,255,0.08); }

.admin-sidebar .brand-icon {
    width: 40px; height: 40px;
    background: linear-gradient(135deg, var(--gold), var(--accent));
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 18px; color: #fff;
    box-shadow: 0 4px 12px rgba(217, 119, 6, 0.35);
}

.admin-sidebar .brand-title { font-size: 15px; font-weight: 800; letter-spacing: -0.01em; color: #fff; }
.admin-sidebar .brand-sub { font-size: 10.5px; color: #94a3b8; text-transform: uppercase; letter-spacing: 0.09em; font-weight: 700; }

.admin-nav { display: flex; flex-direction: column; gap: 2px; flex: 1; }

.nav-section-label {
    font-size: 10.5px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: #64748b;
    font-weight: 700;
    margin: 14px 8px 6px;
}

.admin-nav a {
    display: flex;
    align-items: center;
    gap: 11px;
    color: #b6c2d9;
    text-decoration: none;
    font-weight: 600;
    font-size: 13.5px;
    padding: 10px 12px;
    border-radius: 9px;
    transition: var(--transition);
}

.admin-nav a .nav-icon { font-size: 15px; width: 20px; text-align: center; }

.admin-nav a:hover { background: rgba(255,255,255,0.06); color: #fff; }

.admin-nav a.active {
    background: rgba(217, 119, 6, 0.16);
    color: #fbbf24;
    box-shadow: inset 3px 0 0 var(--gold);
}

.admin-sidebar-footer {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding-top: 14px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.admin-sidebar-footer a { color: #94a3b8; }
.admin-sidebar-footer a:hover { color: #fff; }
.admin-sidebar-footer a.danger-link:hover { color: #f87171; background: rgba(248,113,113,0.08); }

.admin-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.admin-topbar {
    height: var(--topbar-h);
    background: rgba(255,255,255,0.85);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.admin-topbar h1 { font-size: 18px; font-weight: 800; color: var(--text-main); }
.admin-topbar .topbar-actions { display: flex; align-items: center; gap: 10px; }

.admin-content { padding: 28px; flex: 1; }

/* ==========================================================================
   Tarjetas de estadísticas (dashboard)
   ========================================================================== */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 26px;
}

.stat-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 20px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }

.stat-card .stat-label {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    margin-bottom: 8px;
    display: flex; align-items: center; gap: 6px;
}

.stat-card .stat-value { font-size: 28px; font-weight: 800; color: var(--text-main); letter-spacing: -0.02em; }
.stat-card .stat-sub { font-size: 12.5px; color: var(--text-muted); margin-top: 4px; }

/* ==========================================================================
   Tarjetas de contenido genéricas
   ========================================================================== */
.card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
}

.card-header {
    padding: 18px 22px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-header h2 { font-size: 15.5px; font-weight: 800; }
.card-body { padding: 22px; }

.data-table-wrap { overflow-x: auto; }
.data-table thead tr { background: var(--primary-light); color: #fff; }
.data-table thead th { font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; }
.data-table tbody td { font-size: 13.5px; }

/* ==========================================================================
   Cabecera antigua (aún referenciada por algunas páginas) — se conserva
   pero ya no es el layout principal del panel.
   ========================================================================== */
.top-bar {
    background: var(--primary);
    color: #94a3b8;
    padding: 8px 0;
    font-size: 13px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.site-header {
    background: var(--primary-light);
    color: #ffffff;
    padding: 20px 0;
    border-bottom: 4px solid var(--accent);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow);
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

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

.brand-logo { display: flex; align-items: center; gap: 12px; text-decoration: none; color: #ffffff; }

.brand-icon {
    width: 44px; height: 44px;
    background: linear-gradient(135deg, var(--gold), var(--accent));
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-weight: 800; font-size: 20px; color: #fff;
    box-shadow: 0 4px 12px rgba(217, 119, 6, 0.4);
}

.brand-title { font-size: 22px; font-weight: 800; letter-spacing: -0.03em; line-height: 1.1; }

.brand-sub { font-size: 12px; color: #94a3b8; text-transform: uppercase; letter-spacing: 0.1em; font-weight: 600; }

.main-nav { display: flex; gap: 16px; list-style: none; }
.main-nav a { color: #cbd5e1; text-decoration: none; font-weight: 600; font-size: 14px; transition: var(--transition); padding: 8px 14px; border-radius: 8px; }
.main-nav a:hover, .main-nav a.active { color: #ffffff; background: rgba(255, 255, 255, 0.1); }

/* ==========================================================================
   Badges, alertas y estados
   ========================================================================== */
.badge {
    display: inline-block;
    background: var(--neutral-bg);
    color: var(--primary);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    padding: 4px 12px;
    border-radius: 20px;
    letter-spacing: 0.05em;
}

.badge-gold { background: linear-gradient(135deg, var(--gold), var(--accent)); color: #ffffff; }

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 11px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
}

.status-published { background: var(--success-bg); color: #166534; }
.status-draft { background: var(--warning-bg); color: #92400e; }
.status-scheduled { background: var(--info-bg); color: #0369a1; }
.status-archived { background: var(--neutral-bg); color: #475569; }

.alert {
    padding: 13px 16px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 18px;
    border: 1px solid transparent;
}

.alert-danger { background: var(--danger-bg); color: #991b1b; border-color: #fecaca; }
.alert-success { background: var(--success-bg); color: #166534; border-color: #bbf7d0; }
.alert-info { background: var(--info-bg); color: #0369a1; border-color: #bae6fd; }

/* ==========================================================================
   Botones con microinteracciones
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 10px 20px;
    border-radius: 9px;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-size: 14px;
}

.btn-primary { background: linear-gradient(135deg, var(--gold), var(--accent)); color: #fff; box-shadow: 0 4px 12px rgba(217, 119, 6, 0.3); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(217, 119, 6, 0.4); }
.btn-dark { background: var(--primary); color: #fff; }
.btn-dark:hover { background: var(--primary-light); }
.btn-outline { background: transparent; color: var(--text-main); border: 1px solid var(--border); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-danger { background: var(--danger-bg); color: var(--danger); }
.btn-danger:hover { background: #fecaca; }
.btn-sm { padding: 6px 13px; font-size: 12.5px; }

/* ==========================================================================
   Tarjeta de formulario (login / configuración)
   ========================================================================== */
.admin-card {
    background: #ffffff;
    padding: 36px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-hover);
    max-width: 420px;
    width: 100%;
    margin: 0 auto;
    border: 1px solid var(--border);
}

.login-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background:
        radial-gradient(circle at 15% 20%, rgba(217,119,6,0.18), transparent 40%),
        radial-gradient(circle at 85% 80%, rgba(56,189,248,0.12), transparent 40%),
        var(--primary);
    padding: 20px;
}

.login-brand { text-align: center; margin-bottom: 26px; }
.login-brand .brand-icon { margin: 0 auto 14px; }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 700; margin-bottom: 8px; font-size: 14px; color: var(--primary); }
.form-control { width: 100%; padding: 12px 16px; border-radius: 10px; border: 1px solid var(--border); font-size: 15px; outline: none; transition: var(--transition); background: #f8fafc; }
.form-control:focus { border-color: var(--accent); background: #ffffff; box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.15); }

/* ==========================================================================
   Responsive
   ========================================================================== */
@media (max-width: 960px) {
    .admin-shell { flex-direction: column; }
    .admin-sidebar { position: relative; width: 100%; height: auto; flex-direction: row; overflow-x: auto; align-items: center; padding: 12px; }
    .admin-sidebar .brand-logo { border-bottom: none; padding: 0 10px 0 0; }
    .admin-nav { flex-direction: row; flex: none; }
    .nav-section-label { display: none; }
    .admin-sidebar-footer { flex-direction: row; border-top: none; padding-top: 0; }
    .admin-content { padding: 18px; }
    .stat-grid { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
}