:root {
    --sidebar-width: 260px;
    --primary: #1e3a5f;
    --primary-light: #2d5a8a;
    --accent: #c9a227;
    --bg: #f0f2f5;
    --card-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

* { box-sizing: border-box; }

body.admin-body {
    font-family: 'Segoe UI', system-ui, sans-serif;
    background: var(--bg);
    margin: 0;
    min-height: 100vh;
}

.admin-wrapper { display: flex; min-height: 100vh; }

.admin-sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--primary) 0%, #152a45 100%);
    color: #fff;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    overflow-y: auto;
    z-index: 1000;
    transition: transform 0.3s ease, width 0.3s ease;
}

.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    z-index: 999;
}

.admin-wrapper.sidebar-collapsed .admin-sidebar {
    transform: translateX(calc(-1 * var(--sidebar-width)));
}

.admin-wrapper.sidebar-collapsed .admin-main {
    margin-left: 0;
}

.sidebar-toggle {
    min-width: 38px;
}

.sidebar-toggle .bi-x-lg { display: none; }
.admin-wrapper:not(.sidebar-collapsed) .sidebar-toggle.is-open .bi-list { display: none; }
.admin-wrapper:not(.sidebar-collapsed) .sidebar-toggle.is-open .bi-x-lg { display: inline; }
.admin-wrapper.sidebar-collapsed .sidebar-toggle .bi-list { display: inline; }
.admin-wrapper.sidebar-collapsed .sidebar-toggle .bi-x-lg { display: none; }

.sidebar-brand {
    padding: 1.5rem 1.25rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-brand h4 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
}

.sidebar-brand small {
    opacity: 0.7;
    font-size: 0.75rem;
}

.sidebar-nav { padding: 1rem 0; }

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 1.25rem;
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: background 0.2s;
    font-size: 0.95rem;
}

.sidebar-nav a:hover,
.sidebar-nav a.active {
    background: rgba(255, 255, 255, 0.12);
    color: #fff;
}

.sidebar-nav a.active { border-left: 3px solid var(--accent); }

.sidebar-nav .nav-icon { width: 20px; text-align: center; opacity: 0.9; }

.admin-main {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: margin-left 0.3s ease;
    width: calc(100% - var(--sidebar-width));
}

.admin-topbar {
    background: #fff;
    padding: 1rem 1.5rem;
    box-shadow: var(--card-shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.admin-content { padding: 1.5rem; flex: 1; }

.stat-card {
    background: #fff;
    border-radius: 12px;
    padding: 1.25rem;
    box-shadow: var(--card-shadow);
    border-left: 4px solid var(--primary);
    transition: transform 0.2s;
}

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

.stat-card h3 { font-size: 2rem; margin: 0; color: var(--primary); }
.stat-card p { margin: 0.25rem 0 0; color: #666; font-size: 0.9rem; }

.card-panel {
    background: #fff;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
}

.card-panel .card-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #fafbfc;
}

.card-panel .card-body { padding: 1.25rem; }

.table-admin { margin: 0; }
.table-admin th { font-weight: 600; font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.03em; color: #555; }
.table-admin img.thumb { width: 60px; height: 40px; object-fit: cover; border-radius: 6px; }
.table-admin img.avatar { width: 48px; height: 48px; object-fit: cover; border-radius: 50%; }

/* DataTables */
.admin-content .dataTables_wrapper .dataTables_filter input,
.admin-content .dataTables_wrapper .dataTables_length select {
    border: 1px solid #dee2e6;
    border-radius: 6px;
    padding: 0.35rem 0.65rem;
}
.admin-content .dataTables_wrapper .dataTables_info,
.admin-content .dataTables_wrapper .dataTables_length,
.admin-content .dataTables_wrapper .dataTables_filter {
    padding: 0.75rem 1rem;
}
.admin-content table.dataTable thead th {
    border-bottom: 2px solid #dee2e6 !important;
}
.admin-content .dataTables_wrapper .pagination .page-link {
    border-radius: 6px;
    margin: 0 2px;
}
.admin-content .dataTables_wrapper .page-item.active .page-link {
    background-color: var(--primary);
    border-color: var(--primary);
}
.card-panel .card-body.p-0 .dataTables_wrapper .row:first-child {
    padding: 1rem 1rem 0;
}
.card-panel .card-body.p-0 .dataTables_wrapper .row:last-child {
    padding: 0 1rem 1rem;
}

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

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

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, #0f1f33 100%);
}

.login-box {
    background: #fff;
    border-radius: 16px;
    padding: 2.5rem;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.login-box h2 { color: var(--primary); margin-bottom: 0.5rem; }
.login-box .subtitle { color: #888; margin-bottom: 1.5rem; font-size: 0.9rem; }

.form-label { font-weight: 500; color: #444; }
.img-preview { max-width: 200px; max-height: 120px; border-radius: 8px; margin-top: 0.5rem; object-fit: cover; }

@media (max-width: 768px) {
    .admin-main {
        margin-left: 0;
        width: 100%;
    }
    .admin-wrapper:not(.sidebar-mobile-open) .admin-sidebar {
        transform: translateX(calc(-1 * var(--sidebar-width)));
    }
    .admin-wrapper.sidebar-mobile-open .sidebar-overlay {
        display: block;
    }
    .admin-wrapper.sidebar-mobile-open .admin-sidebar {
        transform: translateX(0);
    }
}