body {
    font-family: 'Poppins', sans-serif;
    background-color: #f5f5f5;
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.5rem;
}

.navbar-nav .nav-link {
    font-size: 1rem;
    padding: 0.5rem 1rem;
}

.btn-primary {
    background-color: #FF5733;
    border-color: #FF5733;
}

.btn-primary:hover {
    background-color: #e64a29;
    border-color: #e64a29;
}

.card {
    border: none;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.hero-section {
    background: linear-gradient(135deg, #FF5733, #ff8c66);
    color: white;
    padding: 60px 0;
    text-align: center;
}

.ad-banner {
    background-color: #333333;
    color: white;
    padding: 20px;
    text-align: center;
    margin-bottom: 20px;
}

/* Responsif untuk peranti mobile */
@media (max-width: 768px) {
    .navbar-brand {
        font-size: 1.2rem;
    }
    
    .navbar-nav .nav-link {
        font-size: 0.9rem;
        padding: 0.5rem;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .ad-banner {
        padding: 15px;
        font-size: 0.9rem;
    }
}