:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --success-color: #27ae60;
    --light-gray: #f5f6fa;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    background-color: var(--light-gray);
}

.navbar {
    background-color: var(--primary-color);
    padding: 0.8rem;
    color: white;
}

.container {
    max-width: 900px;
    margin: 1rem auto;
    padding: 0 1rem;
}

.cart-container {
    background: white;
    border-radius: 8px;
    padding: 1rem;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.cart-title {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.cart-item {
    display: grid;
    grid-template-columns: 80px 2fr 1fr 1fr auto;
    gap: 1rem;
    align-items: center;
    padding: 0.8rem;
    border-bottom: 1px solid #eee;
}

.cart-item img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 4px;
}

.item-details h3 {
    font-size: 0.9rem;
    margin-bottom: 0.3rem;
    color: var(--primary-color);
}

.item-details p {
    font-size: 0.8rem;
    color: #666;
    margin-bottom: 0.2rem;
}

.price-details {
    font-size: 0.9rem;
}

.original-price {
    text-decoration: line-through;
    color: #999;
    font-size: 0.8rem;
}

.sale-price {
    color: var(--accent-color);
    font-weight: bold;
}

.quantity-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.quantity-btn {
    padding: 0.3rem 0.5rem;
    border: none;
    background: var(--light-gray);
    cursor: pointer;
    border-radius: 3px;
}

.remove-btn {
    color: var(--accent-color);
    cursor: pointer;
    font-size: 0.9rem;
}

.cart-summary {
    background: var(--light-gray);
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.summary-row.total {
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--primary-color);
    border-top: 1px solid #ddd;
    padding-top: 0.5rem;
    margin-top: 0.5rem;
}

.checkout-form {
    margin-top: 1.5rem;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.3rem;
    font-size: 0.9rem;
    color: var(--primary-color);
}

.form-group input, 
.form-group textarea {
    width: 100%;
    padding: 0.6rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.9rem;
}

.location-btn {
    background: var(--secondary-color);
    color: white;
    border: none;
    padding: 0.5rem;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    margin-top: 0.3rem;
}

.checkout-btn {
    background: var(--success-color);
    color: white;
    border: none;
    padding: 0.8rem;
    border-radius: 4px;
    cursor: pointer;
    width: 100%;
    font-size: 1rem;
    margin-top: 1rem;
}

.empty-cart {
    text-align: center;
    padding: 2rem;
    color: #666;
}

.back-to-shop {
    display: inline-block;
    margin-top: 1rem;
    color: var(--secondary-color);
    text-decoration: none;
}

@media (max-width: 768px) {
    .cart-item {
        grid-template-columns: 60px 1fr;
        gap: 0.5rem;
    }

    .cart-item > *:not(:first-child):not(:nth-child(2)) {
        grid-column: 2;
    }
}