* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

body {
    background-color: #f5f5f5;
    padding: 20px;
}

.checkout-container {
    max-width: 1200px;
    margin: 50px auto;
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 20px;
}

.addresses-section, .order-summary {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

h2 {
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #eee;
}

.saved-addresses {
    display: grid;
    gap: 15px;
    margin-bottom: 20px;
}

.address-card {
    border: 1px solid #ddd;
    padding: 15px;
    border-radius: 6px;
    position: relative;
}

.address-card.selected {
    border: 2px solid #4CAF50;
}

.address-details h4 {
    color: #333;
    margin-bottom: 10px;
}

.address-details p {
    color: #666;
    margin-bottom: 5px;
}

.address-actions {
    margin-top: 10px;
    display: flex;
    gap: 10px;
}

.btn-edit, .btn-default, .btn-add-address {
    padding: 8px 15px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
}

.btn-edit {
    background: #2196F3;
    color: white;
}

.btn-default {
    background: #9E9E9E;
    color: white;
}

.btn-add-address {
    background: #4CAF50;
    color: white;
    width: 100%;
    padding: 12px;
}

.address-form {
    background: #f9f9f9;
    padding: 20px;
    border-radius: 6px;
    margin-top: 20px;
}

.address-form input {
    width: 100%;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.order-item {
    display: flex;
    gap: 15px;
    padding: 15px 0;
    border-bottom: 1px solid #eee;
}

.item-image {
    width: 80px;
    height: 80px;
    background: #eee;
    border-radius: 4px;
}

.subtotal-section {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 2px solid #eee;
}

.price-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 10px;
    color: #666;
}

.total-row {
    font-size: 18px;
    font-weight: bold;
    color: #333;
}

.checkout-button {
    width: 100%;
    padding: 15px;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    margin-top: 20px;
    cursor: pointer;
}

/* Responsive Design */
@media (max-width: 768px) {
    .checkout-container {
        grid-template-columns: 1fr;
    }

    .btn-add-address {
        padding: 10px;
        font-size: 14px;
    }

    .checkout-button {
        font-size: 14px;
    }

    .order-item {
        flex-direction: column;
        align-items: center;
    }

    .item-image {
        margin-bottom: 10px;
    }

    .subtotal-section {
        text-align: center;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }

    .addresses-section, .order-summary {
        padding: 15px;
    }

    .btn-add-address, .checkout-button {
        padding: 10px;
        font-size: 12px;
    }

    .address-details h4 {
        font-size: 16px;
    }

    .address-details p {
        font-size: 14px;
    }

    .price-row {
        font-size: 14px;
    }

    .total-row {
        font-size: 16px;
    }
}

    .checkout-container {
        display: flex;
        flex-wrap: wrap;
        gap: 20px;
        padding: 20px;
    }

    .addresses-section, .order-summary {
        flex: 1;
        min-width: 300px;
        margin-bottom: 20px;
    }

    .address-card {
        border: 1px solid #ccc;
        border-radius: 5px;
        padding: 15px;
        margin-bottom: 10px;
    }

    .price-row {
        display: flex;
        justify-content: space-between;
        font-weight: bold;
        margin-top: 15px;
    }

    .payment-method-section {
        margin-top: 20px;
    }

    .payment-option {
        margin-bottom: 10px;
    }

    .payment-form {
        display: flex;
        flex-direction: column;
    }

    .checkout-button {
        margin-top: 20px;
        padding: 10px 15px;
        background-color: #28a745;
        color: white;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        width: 100%;
    }

    .checkout-button:hover {
        background-color: #218838;
    }

    @media (max-width: 768px) {
        .checkout-container {
            flex-direction: column;
        }

        .addresses-section, .order-summary {
            min-width: 100%;
        }
    }
    
    /* Add this CSS to your stylesheet */
.address-card.selected {
    border: 2px solid #007bff; /* Change border color to indicate selection */
    background-color: #e9f3ff; /* Light background color to show selection */
}