body {
    background: linear-gradient(135deg, #e0f7fa, #b3e5fc);
    font-family: 'Arial', sans-serif;
    color: #333;
}

.card {
    border-radius: 15px;
    box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
    transition: transform 0.3s ease;
}

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

.card-header {
    font-size: 1.75rem;
    font-weight: bold;
    background-color: #0d6efd;
    color: white;
    border-radius: 15px 15px 0 0;
}

.btn-secondary {
    background-color: #0d6efd;
    border-color: #0d6efd;
    transition: background-color 0.3s ease;
}

.btn-secondary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
    border-color: #c3e6cb;
    border-radius: 10px;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
    border-color: #f5c6cb;
    border-radius: 10px;
}

.alert-info {
    background-color: #cce5ff;
    color: #0c5460;
    border-color: #b8daff;
    border-radius: 10px;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: bold;
    color: #0d6efd !important;
}

.navbar-text {
    font-size: 1rem;
    margin-left: 20px;
    color: #333;
}