:root {
    --dl-sky: #0ea5e9;
    --dl-sky-dark: #0369a1;
    --dl-ink: #172033;
    --dl-muted: #667085;
    --dl-line: #dbe8f1;
    --dl-bg: #f6fbff;
}

body {
    background: var(--dl-bg);
    color: var(--dl-ink);
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

.navbar, .admin-sidebar {
    background: #ffffff;
    border-bottom: 1px solid var(--dl-line);
}

.brand-mark {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    background: var(--dl-sky);
}

.btn-sky {
    background: var(--dl-sky);
    border-color: var(--dl-sky);
    color: #fff;
}

.btn-sky:hover {
    background: var(--dl-sky-dark);
    border-color: var(--dl-sky-dark);
    color: #fff;
}

.product-card, .panel-card {
    border: 1px solid var(--dl-line);
    border-radius: 8px;
    background: #fff;
}

.product-cover {
    aspect-ratio: 16 / 9;
    object-fit: cover;
    width: 100%;
    background: #e8f6fd;
    border-radius: 8px 8px 0 0;
}

.empty-cover {
    aspect-ratio: 16 / 9;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #e8f6fd;
    color: var(--dl-sky-dark);
    border-radius: 8px 8px 0 0;
    font-size: 48px;
}

.admin-shell {
    min-height: 100vh;
}

.admin-sidebar {
    width: 260px;
    flex: 0 0 260px;
    border-right: 1px solid var(--dl-line);
}

.admin-sidebar a {
    display: flex;
    gap: 10px;
    align-items: center;
    color: var(--dl-muted);
    text-decoration: none;
    padding: 10px 12px;
    border-radius: 8px;
    margin-bottom: 4px;
}

.admin-sidebar a.active, .admin-sidebar a:hover {
    color: var(--dl-sky-dark);
    background: #e8f6fd;
}

.table td, .table th {
    vertical-align: middle;
}

@media (max-width: 991px) {
    .admin-shell {
        display: block !important;
    }
    .admin-sidebar {
        width: 100%;
        min-height: auto;
        border-right: 0;
    }
}