:root {
    --primary-color: #3498db;
    --secondary-color: #2ecc71;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
}

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

.card {
    border: none;
    border-radius: 15px;
    overflow: hidden;
    transition: transform 0.3s ease;
}

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

.card-header {
    padding: 1.5rem;
}

.form-control, .form-select {
    padding: 0.75rem 1rem;
    border-radius: 10px;
    border: 1px solid #ced4da;
    transition: all 0.3s;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(52, 152, 219, 0.25);
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.3s;
}

.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: #2980b9;
    border-color: #2980b9;
    transform: translateY(-2px);
}

.btn-outline-secondary:hover {
    transform: translateY(-2px);
}

.table {
    border-radius: 10px;
    overflow: hidden;
}

.table thead th {
    background-color: var(--dark-color);
    color: white;
    font-weight: 600;
}

.table tbody tr:hover {
    background-color: rgba(52, 152, 219, 0.1);
}

#resultadoContainer {
    animation: fadeIn 0.5s ease-in-out;
}

.nav-tabs .nav-link {
    color: var(--dark-color);
    font-weight: 600;
}

.nav-tabs .nav-link.active {
    color: var(--primary-color);
    border-bottom: 3px solid var(--primary-color);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Estilo para valores monetarios */
.monetary {
    font-family: 'Courier New', monospace;
    font-weight: bold;
}

/* Estilo para resumen */
.resumen-item {
    border-bottom: 1px solid #eee;
    padding: 0.5rem 0;
}

.resumen-item:last-child {
    border-bottom: none;
}

.resumen-label {
    font-weight: 600;
    color: var(--dark-color);
}

/* Responsive */
@media (max-width: 768px) {
    .card-header {
        padding: 1rem;
    }
    
    h1 {
        font-size: 1.5rem;
    }
}