:root {
    --primary-color: #ff6b6b;
    --secondary-color: #4ecdc4;
    --text-color: #333;
    --bg-color: #f9f9f9;
    --card-bg: #fff;
    --border-color: #e0e0e0;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding-bottom: 180px;
}

header {
    background-color: var(--card-bg);
    padding: 20px;
    text-align: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

h1 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--primary-color);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 20px 160px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
    padding-bottom: 20px;
}

.product-card {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    position: relative;
    border: 2px solid transparent;
}

.product-card.selected {
    border-color: var(--secondary-color);
    box-shadow: 0 8px 12px rgba(78, 205, 196, 0.2);
}

.product-image-container {
    position: relative;
    padding-top: 100%; /* 1:1 Aspect Ratio */
    background-color: #eee;
    overflow: hidden;
}

.product-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-card:hover .product-img {
    transform: scale(1.05);
}

.select-checkbox {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 24px;
    height: 24px;
    cursor: pointer;
    z-index: 10;
    accent-color: var(--secondary-color);
    transform: scale(1.2);
}

.product-info {
    padding: 15px;
}

.product-name {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-color);
}

.price-container {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 10px;
}

.price-label {
    font-size: 0.9rem;
    color: #666;
}

.price-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.currency-symbol {
    position: absolute;
    left: 8px;
    color: #888;
    pointer-events: none;
}

.price-input {
    width: 100%;
    padding: 8px 8px 8px 24px;
    border: 1px solid transparent;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: bold;
    color: var(--primary-color);
    outline: none;
    background-color: transparent;
    cursor: default;
}

.price-input:read-only {
    border-color: transparent;
    background-color: transparent;
}

/* Quantity Control Styles */
.quantity-container {
    display: flex;
    flex-direction: column;
    margin-top: 10px;
}

.quantity-label {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 5px;
}

.quantity-control {
    display: flex;
    align-items: center;
    gap: 5px;
}

.quantity-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background-color: var(--secondary-color);
    color: white;
    font-size: 1.2rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.quantity-btn:hover {
    background-color: #3dbdb4;
    transform: scale(1.1);
    box-shadow: 0 2px 8px rgba(78, 205, 196, 0.3);
}

.quantity-btn:active {
    transform: scale(1);
}

.quantity-input {
    width: 50px;
    height: 32px;
    text-align: center;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 1rem;
    font-weight: bold;
    color: var(--text-color);
    outline: none;
    transition: border-color 0.2s;
}

.quantity-input:focus {
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 2px rgba(78, 205, 196, 0.2);
}

/* Mobile optimizations for quantity controls */
@media (max-width: 600px) {
    .quantity-btn {
        width: 28px;
        height: 28px;
        font-size: 1rem;
    }
    
    .quantity-input {
        width: 45px;
        height: 28px;
        font-size: 0.9rem;
    }
}

/* Footer Cart Bar */
.cart-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background: var(--card-bg);
    padding: 15px 20px;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    box-sizing: border-box; /* Ensure padding doesn't overflow */
}

.cart-info {
    display: flex;
    gap: 20px;
    font-size: 1.1rem;
}

.cart-info strong {
    color: var(--primary-color);
    font-size: 1.2rem;
}

.checkout-btn {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
    box-shadow: 0 4px 6px rgba(78, 205, 196, 0.3);
}

.checkout-btn:hover {
    background-color: #3dbdb4;
    transform: translateY(-2px);
}

.checkout-btn:active {
    transform: translateY(0);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background-color: var(--card-bg);
    margin: 5% auto;
    padding: 0;
    border-radius: 16px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    padding: 20px 25px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-color);
}

.close {
    font-size: 28px;
    font-weight: bold;
    color: #aaa;
    cursor: pointer;
    transition: color 0.2s;
}

.close:hover {
    color: var(--primary-color);
}

.modal-body {
    padding: 25px;
}

.payment-methods {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 25px;
}

.payment-method {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: var(--bg-color);
}

.payment-method:hover {
    border-color: var(--secondary-color);
    background-color: #f0f9f8;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(78, 205, 196, 0.15);
}

.payment-method.selected {
    border-color: var(--secondary-color);
    background-color: #e6f6f5;
    box-shadow: 0 4px 12px rgba(78, 205, 196, 0.2);
}

.payment-icon {
    flex-shrink: 0;
    padding: 10px;
    background-color: white;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.payment-details {
    flex-grow: 1;
}

.payment-details h3 {
    margin: 0 0 5px 0;
    font-size: 1.2rem;
    color: var(--text-color);
}

.payment-details p {
    margin: 0;
    color: #666;
    font-size: 0.95rem;
}

.paypal-account {
    font-weight: bold;
    color: var(--primary-color) !important;
    margin-top: 5px;
}

.order-summary {
    background-color: var(--bg-color);
    padding: 20px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.order-summary h3 {
    margin: 0 0 15px 0;
    font-size: 1.2rem;
    color: var(--text-color);
}

#order-details {
    margin-bottom: 15px;
    max-height: 150px;
    overflow-y: auto;
    padding-right: 10px;
}

#order-details p {
    margin: 5px 0;
    color: #666;
    font-size: 0.95rem;
}

.order-summary .total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--text-color);
}

#modal-total-price {
    color: var(--primary-color);
    font-size: 1.3rem;
}

.modal-footer {
    padding: 20px 25px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 15px;
}

.cancel-btn, .confirm-btn {
    padding: 12px 25px;
    border: none;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.2s ease;
}

.cancel-btn {
    background-color: #f5f5f5;
    color: var(--text-color);
    border: 1px solid var(--border-color);
}

.cancel-btn:hover {
    background-color: #e0e0e0;
    transform: translateY(-2px);
}

.confirm-btn {
    background-color: var(--secondary-color);
    color: white;
    box-shadow: 0 4px 12px rgba(78, 205, 196, 0.3);
}

.confirm-btn:hover {
    background-color: #3dbdb4;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(78, 205, 196, 0.4);
}

/* Enhanced product card styles */
.product-card {
    background: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.05);
    overflow: hidden;
    transition: all 0.3s ease;
    position: relative;
    border: 2px solid transparent;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 20px rgba(0,0,0,0.12);
}

/* Enhanced checkout button */
.checkout-btn {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    padding: 14px 35px;
    border-radius: 28px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(78, 205, 196, 0.3);
    position: relative;
    overflow: hidden;
}

.checkout-btn:hover {
    background-color: #3dbdb4;
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(78, 205, 196, 0.4);
}

.checkout-btn:active {
    transform: translateY(0);
}

/* Enhanced header */
header {
    background-color: var(--card-bg);
    padding: 25px;
    text-align: center;
    box-shadow: 0 2px 15px rgba(0,0,0,0.1);
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
}

/* Responsive adjustments */
/* Tablet and small screens */
@media (max-width: 768px) {
    body {
        padding-bottom: 220px;
    }

    .container {
        padding: 15px 15px 190px;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        gap: 15px;
    }
    
    h1 {
        font-size: 1.3rem;
    }
    
    .cart-bar {
        flex-direction: column;
        gap: 10px;
        padding: 12px 15px;
    }
    
    .cart-info {
        width: 100%;
        justify-content: space-between;
        font-size: 1rem;
    }
    
    .checkout-btn {
        width: 100%;
        padding: 12px 20px;
    }
    
    .modal-content {
        margin: 10% auto;
        width: 95%;
    }
}

/* Mobile devices */
@media (max-width: 600px) {
    body {
        padding-bottom: 260px;
    }

    .container {
        padding: 10px 10px 220px;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 12px;
    }
    
    h1 {
        font-size: 1.2rem;
        padding: 0 10px;
    }
    
    .cart-bar {
        flex-direction: column;
        gap: 10px;
        padding: 10px;
    }
    
    .cart-info {
        width: 100%;
        justify-content: space-between;
        font-size: 1rem;
    }
    
    .checkout-btn {
        width: 100%;
        padding: 12px 20px;
    }
    
    .modal-content {
        margin: 10% auto;
        width: 95%;
    }
    
    .modal-body {
        padding: 15px;
    }
    
    .payment-method {
        flex-direction: column;
        text-align: center;
        padding: 12px;
    }
    
    .payment-details h3 {
        font-size: 1.1rem;
    }
    
    .payment-details p {
        font-size: 0.9rem;
    }
    
    .modal-footer {
        flex-direction: column;
        gap: 10px;
    }
    
    .cancel-btn, .confirm-btn {
        width: 100%;
        padding: 10px 20px;
        font-size: 0.95rem;
    }
    
    .product-name {
        font-size: 0.95rem;
    }
    
    .price-input {
        font-size: 0.9rem;
    }
}

/* Small mobile devices */
@media (max-width: 400px) {
    body {
        padding-bottom: 280px;
    }

    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
        gap: 10px;
    }
    
    h1 {
        font-size: 1.1rem;
    }
    
    .product-info {
        padding: 10px;
    }
    
    .product-name {
        font-size: 0.9rem;
        margin-bottom: 8px;
    }
    
    .price-container {
        gap: 5px;
        margin-top: 8px;
    }
    
    .price-label {
        font-size: 0.85rem;
    }
    
    .price-input {
        font-size: 0.85rem;
        padding: 6px 6px 6px 20px;
    }
    
    .cart-info {
        font-size: 0.95rem;
        gap: 10px;
    }
    
    .cart-info strong {
        font-size: 1.1rem;
    }
    
    .modal-header h2 {
        font-size: 1.3rem;
    }
    
    .order-summary {
        padding: 15px;
    }
    
    .order-summary h3 {
        font-size: 1.1rem;
    }
    
    #order-details p {
        font-size: 0.9rem;
    }
    
    .order-summary .total {
        font-size: 1rem;
    }
    
    #modal-total-price {
        font-size: 1.2rem;
    }
}