* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.child-attribute {
    animation: slideIn 0.3s ease;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.header {
    background: #2c3e50;
    color: white;
    padding: 20px 0;
    margin-bottom: 30px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.header h1 {
    margin: 0;
    font-size: 24px;
}

.header .user-info {
    margin-top: 10px;
    font-size: 14px;
    opacity: 0.9;
}

.nav {
    background: white;
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.nav a {
    color: #2c3e50;
    text-decoration: none;
    margin-right: 20px;
    padding: 8px 15px;
    border-radius: 4px;
    transition: background 0.3s;
}

.nav a:hover, .nav a.active {
    background: #3498db;
    color: white;
}

.card {
    background: white;
    padding: 20px;
    margin-bottom: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card h2 {
    margin-bottom: 15px;
    color: #2c3e50;
    font-size: 20px;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    text-decoration: none;
    font-size: 14px;
    transition: background 0.3s;
}

.btn:hover {
    background: #2980b9;
}

.btn-success {
    background: #27ae60;
}

.btn-success:hover {
    background: #229954;
}

.btn-danger {
    background: #e74c3c;
}

.btn-danger:hover {
    background: #c0392b;
}

.btn-secondary {
    background: #95a5a6;
}

.btn-secondary:hover {
    background: #7f8c8d;
}

.btn-small {
    padding: 5px 10px;
    font-size: 12px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #2c3e50;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

table th,
table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

table th {
    background: #f8f9fa;
    font-weight: 600;
    color: #2c3e50;
}

table tr:hover {
    background: #f8f9fa;
}

.badge {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 500;
}

.badge-pending {
    background: #f39c12;
    color: white;
}

.badge-processing {
    background: #3498db;
    color: white;
}

.badge-completed {
    background: #27ae60;
    color: white;
}

.badge-cancelled {
    background: #95a5a6;
    color: white;
}

.alert {
    padding: 15px;
    margin-bottom: 20px;
    border-radius: 4px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.alert-info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.product-card {
    background: white;
    border-radius: 8px;
    padding: 15px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.product-card h3 {
    margin-bottom: 10px;
    color: #2c3e50;
    font-size: 18px;
}

.product-card .price {
    font-size: 20px;
    font-weight: bold;
    color: #27ae60;
    margin: 10px 0;
}

.product-card .code {
    font-size: 12px;
    color: #7f8c8d;
    margin-bottom: 5px;
}

.cart-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid #ddd;
}

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

.quantity-control {
    display: flex;
    align-items: center;
    gap: 10px;
}

.quantity-control button {
    width: 30px;
    height: 30px;
    border: 1px solid #ddd;
    background: white;
    border-radius: 4px;
    cursor: pointer;
}

.quantity-control input {
    width: 60px;
    text-align: center;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 5px;
}

.loading {
    text-align: center;
    padding: 40px;
    color: #7f8c8d;
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: #7f8c8d;
}

.empty-state h3 {
    margin-bottom: 10px;
    font-size: 20px;
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    table {
        font-size: 12px;
    }
    
    table th,
    table td {
        padding: 8px;
    }
    
    .nav a {
        display: block;
        margin: 5px 0;
    }
}