body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

.navbar-brand {
    font-size: 1.4rem;
    letter-spacing: -0.5px;
}

.card {
    border-radius: 12px;
}

.card-img-top {
    border-radius: 12px 12px 0 0;
}

.btn {
    border-radius: 8px;
}

.btn-dark {
    background-color: #1a1a2e;
    border-color: #1a1a2e;
}

.btn-dark:hover {
    background-color: #16213e;
    border-color: #16213e;
}

main {
    min-height: calc(100vh - 130px);
}

.badge {
    font-weight: 500;
    border-radius: 6px;
}

.table th {
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.alert {
    border-radius: 10px;
    border: none;
}

.alert-success { background-color: #d1e7dd; color: #0a3622; }
.alert-warning { background-color: #fff3cd; color: #664d03; }
.alert-error, .alert-danger { background-color: #f8d7da; color: #58151c; }
.alert-info { background-color: #cff4fc; color: #055160; }