:root {
    --sidebar-width: 260px;
}

body {
    min-height: 100vh;
    background-color: #f5f6f8;
}

.sidebar {
    width: var(--sidebar-width);
    min-height: 100vh;
    background-color: #1f2937;
    color: #d1d5db;
}

.sidebar .brand {
    color: #fff;
    font-weight: 600;
    font-size: 1.1rem;
}

.sidebar a {
    color: #d1d5db;
    text-decoration: none;
}

.sidebar .nav-link {
    color: #d1d5db;
    border-radius: 6px;
    padding: 0.45rem 0.75rem;
}

.sidebar .nav-link:hover {
    background-color: #374151;
    color: #fff;
}

.sidebar .nav-link.active {
    background-color: #2563eb;
    color: #fff;
}

.sidebar .nav-sublink {
    color: #9ca3af;
    padding: 0.35rem 0.75rem 0.35rem 2.25rem;
    display: block;
    border-radius: 6px;
    font-size: 0.92rem;
}

.sidebar .nav-sublink:hover {
    background-color: #374151;
    color: #fff;
}

.sidebar .nav-sublink.active {
    background-color: #2563eb;
    color: #fff;
}

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

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.card {
    border: none;
    box-shadow: 0 1px 2px rgba(16, 24, 40, 0.06);
}

.table thead th {
    font-weight: 600;
    color: #6b7280;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.formset-row {
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    position: relative;
}