body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.header {
    background-color: #0d6efd;
    color: white;
    padding: 2rem 0;
    margin-bottom: 2rem;
}

.header h1 {
    font-weight: 700;
}

.card {
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.card-header {
    border-radius: 10px 10px 0 0 !important;
}

.url-form {
    padding: 2rem;
}

.result-box {
    background-color: #e9ecef;
    padding: 1rem;
    border-radius: 5px;
    margin-top: 1rem;
}

.short-url {
    font-weight: bold;
    color: #0d6efd;
    word-break: break-all;
}

.copy-btn {
    cursor: pointer;
}

.stats-table {
    margin-top: 2rem;
}

.footer {
    margin-top: 3rem;
    padding: 1.5rem 0;
    background-color: #f1f1f1;
    text-align: center;
}

/* Responsif */
@media (max-width: 768px) {
    .header {
        padding: 1.5rem 0;
    }
    
    .url-form {
        padding: 1rem;
    }
}