:root {
    --sidebar-width: 260px;
    --primary: #1e3a5f;
    --primary-light: #2d5a87;
}

body { font-family: 'Segoe UI', system-ui, sans-serif; background: #f4f6f9; }
[data-bs-theme="dark"] body { background: #1a1d21; }

.auth-body {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
}

.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background: var(--primary);
    color: #fff;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 1000;
    transition: transform .3s;
}

.sidebar-brand {
    padding: 1.25rem;
    font-size: 1.25rem;
    font-weight: 700;
    border-bottom: 1px solid rgba(255,255,255,.1);
    display: flex;
    align-items: center;
    gap: .5rem;
}

.sidebar-nav { padding: 1rem 0; }
.sidebar-nav .nav-link {
    color: rgba(255,255,255,.8);
    padding: .65rem 1.25rem;
    display: flex;
    align-items: center;
    gap: .75rem;
    text-decoration: none;
    transition: all .2s;
}
.sidebar-nav .nav-link:hover,
.sidebar-nav .nav-link.active {
    color: #fff;
    background: rgba(255,255,255,.1);
}

.main-content {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.stat-card .stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.25rem;
    margin-bottom: .75rem;
}

.content-area { flex: 1; }

.table-card { border-radius: 12px; overflow: hidden; }

@media (max-width: 991px) {
    .sidebar { transform: translateX(-100%); }
    .sidebar.show { transform: translateX(0); }
    .main-content { margin-left: 0; }
}