body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    padding: 20px 0;
}

.card {
    border-radius: 15px;
    border: none;
}

.card-header {
    border-radius: 15px 15px 0 0 !important;
    padding: 1.5rem;
}

.card-body {
    padding: 2rem;
}

.form-control:focus,
.form-select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 0.2rem rgba(102, 126, 234, 0.25);
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
    background: linear-gradient(135deg, #5568d3 0%, #65408b 100%);
}

.btn-success {
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(40, 167, 69, 0.4);
}

.info-section {
    background-color: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
    border-left: 4px solid #667eea;
}

.info-section ul li {
    padding: 0.3rem 0;
}

code {
    background-color: #f8f9fa;
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    color: #764ba2;
    font-size: 0.9em;
}

.result-info {
    background-color: #f8f9fa;
    padding: 1.5rem;
    border-radius: 10px;
}

.table {
    margin-bottom: 0;
}

.table th {
    background-color: #e9ecef;
    font-weight: 600;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    margin-right: 0.5rem;
}

@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    .card-body {
        padding: 1.5rem;
    }
}