:root {
    --primary: #0d6efd;
    --primary-dark: #0a58ca;
    --success: #198754;
    --danger: #dc3545;
    --warning: #ffc107;
    --light-bg: #f8f9fa;
    --card-shadow: 0 0.125rem 0.5rem rgba(0,0,0,.08);
    --radius: 0.5rem;
}

* { box-sizing: border-box; }
body {
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--light-bg);
    color: #212529;
}

main > .container-fluid { padding-top: 1rem; }
.navbar-brand { font-weight: 700; font-size: 1.25rem; }
.nav-link { font-weight: 500; }
.btn { border-radius: var(--radius); font-weight: 500; }
.card {
    border: none;
    border-radius: var(--radius);
    box-shadow: var(--card-shadow);
    margin-bottom: 1rem;
}
.card-header {
    background: #fff;
    border-bottom: 1px solid #eee;
    font-weight: 600;
    padding: 0.75rem 1rem;
}
.table { font-size: 0.9rem; }
.badge { font-weight: 500; }
.form-control, .form-select { border-radius: var(--radius); }
.alert { border-radius: var(--radius); border: none; }
.error-summary {
    background: #f8d7da;
    color: #721c24;
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
}
.hint-block { font-size: 0.8rem; color: #6c757d; }
.stat-card {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: #fff;
    border-radius: var(--radius);
    padding: 1.25rem;
    margin-bottom: 1rem;
    box-shadow: var(--card-shadow);
}
.stat-card h3 { font-size: 1.75rem; font-weight: 700; margin: 0 0 0.25rem 0; }
.stat-card p { margin: 0; opacity: .9; font-size: 0.9rem; }
.stat-card.success { background: linear-gradient(135deg, #198754 0%, #146c43 100%); }
.stat-card.warning { background: linear-gradient(135deg, #ffc107 0%, #d39e00 100%); color: #212529; }
.stat-card.danger { background: linear-gradient(135deg, #dc3545 0%, #b02a37 100%); }
.nav li > form > button.logout {
    padding: 0.5rem 0;
    color: rgba(255,255,255,.8);
    background: none;
    border: none;
    cursor: pointer;
}
.nav li > form > button.logout:hover { color: #fff; }
@media (max-width: 991px) {
    .navbar-collapse { padding: 0.5rem 0; }
    .nav li > form > button.logout { text-align: left; width: 100%; }
}
.pagination { margin: 0; }
.required label:after { content: ' *'; color: var(--danger); }