body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.navbar {
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.card {
    border-radius: 15px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
}

.card-header {
    border-radius: 15px 15px 0 0 !important;
    font-weight: bold;
}

code {
    background: #f4f4f4;
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.9em;
}

.table {
    background: white;
}

.btn {
    border-radius: 8px;
    font-weight: 600;
}

.alert {
    border-radius: 10px;
}