html, body {
    height: 100%;
}

body {
    background-color: #f4f6f9;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

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

.sidebar {
    width: 260px;
    background: linear-gradient(180deg, #1e3a5f 0%, #0f2744 100%);
    color: #fff;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

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

.sidebar-nav {
    padding: 1rem 0.75rem;
}

.sidebar-nav .nav-link {
    color: rgba(255, 255, 255, 0.85);
    border-radius: 0.5rem;
    padding: 0.75rem 1rem;
    margin-bottom: 0.25rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

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

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

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

.content-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid #dee2e6;
    background: #fff;
}

.stat-card .stat-label {
    color: #6c757d;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.stat-card .stat-value {
    font-size: 2rem;
    font-weight: 700;
}

.detail-list dt {
    color: #6c757d;
    font-weight: 500;
}

.detail-list dd {
    margin-bottom: 0.75rem;
}

@media (max-width: 991.98px) {
    .sidebar {
        position: fixed;
        left: -260px;
        z-index: 1040;
        transition: left 0.3s ease;
    }

    .sidebar.show {
        left: 0;
    }

    .main-content {
        width: 100%;
    }
}