:root {
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --success-gradient: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    --warning-gradient: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    --danger-gradient: linear-gradient(135deg, #ff6b6b 0%, #ff8e53 100%);
    --dark-gradient: linear-gradient(135deg, #2c3e50 0%, #3498db 100%);
    --light-bg: #f8f9fa;
    --card-bg: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #7f8c8d;
    --border-radius: 12px;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --box-shadow-hover: 0 15px 35px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    margin: 0;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-attachment: fixed;
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

header {
    background: var(--primary-gradient);
    color: white;
    padding: 25px 30px;
    text-align: center;
    border-radius: var(--border-radius);
    margin-bottom: 25px;
    box-shadow: var(--box-shadow);
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 70%);
    transform: rotate(30deg);
}

header h1 {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.tabs {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.tab-btn {
    background: rgba(255, 255, 255, 0.15);
    color: white;
    border: none;
    padding: 12px 25px;
    margin: 0 5px;
    border-radius: 30px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}

.tab-btn.active {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 25px;
    margin-bottom: 25px;
}

.products-section, .cart-section {
    background: var(--card-bg);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.products-section:hover, .cart-section:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-hover);
}

.products-section h2, .cart-section h2 {
    margin-top: 0;
    color: var(--text-primary);
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.product-card {
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 200px;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--success-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.product-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--box-shadow-hover);
}

.product-card:hover::before {
    transform: scaleX(1);
}

.product-card h3 {
    margin: 0 0 15px 0;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    flex-grow: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.price {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 15px 0;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    flex-shrink: 0;
}

.add-btn {
    background: var(--success-gradient);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 30px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(67, 233, 123, 0.3);
    width: 100%;
    flex-shrink: 0;
}

.add-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(67, 233, 123, 0.4);
}

.cart-item {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr auto;
    gap: 15px;
    align-items: center;
    padding: 20px;
    background: var(--light-bg);
    margin-bottom: 12px;
    border-radius: var(--border-radius);
    transition: var(--transition);
    border-left: 4px solid #667eea;
    min-height: 90px;
}

.cart-item:hover {
    background: #e9ecef;
    transform: translateX(5px);
}

.cart-item > span:first-child {
    white-space: normal;
    word-break: break-word;
    line-height: 1.4;
    text-align: left;
}

.cart-item > span:nth-child(2) {
    text-align: center;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
}

.quantity-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    justify-content: center;
}

.quantity-btn {
    background: var(--primary-gradient);
    color: white;
    border: none;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    box-shadow: 0 2px 10px rgba(102, 126, 234, 0.3);
    flex-shrink: 0;
    margin: 0 auto;
    font-size: 1.2rem;
}

.quantity-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.4);
}

.quantity-display {
    font-weight: bold;
    font-size: 1.1rem;
    min-width: 20px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 5px;
}

.cart-item > span:nth-child(4) {
    text-align: center;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
}

.remove-btn {
    background: var(--danger-gradient);
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 25px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 2px 10px rgba(255, 107, 107, 0.3);
    white-space: nowrap;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    min-width: 44px;
    min-height: 44px;
}

.remove-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.4);
}

.cart-total {
    text-align: right;
    font-size: 1.6rem;
    margin: 20px 0;
    padding: 20px;
    background: var(--dark-gradient);
    color: white;
    border-radius: var(--border-radius);
    font-weight: 700;
    box-shadow: var(--box-shadow);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
}

.cart-actions {
    display: flex;
    gap: 15px;
    margin-bottom: 20px;
}

.checkout-btn, .clear-btn {
    flex: 1;
    color: white;
    border: none;
    padding: 15px 25px;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.checkout-btn {
    background: var(--warning-gradient);
    box-shadow: 0 4px 15px rgba(250, 112, 154, 0.3);
}

.clear-btn {
    background: var(--danger-gradient);
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.checkout-btn:hover, .clear-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.order-history {
    background: var(--card-bg);
    padding: 25px;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.order-history:hover {
    transform: translateY(-3px);
    box-shadow: var(--box-shadow-hover);
}

.history-controls {
    margin-bottom: 20px;
    display: flex;
    justify-content: flex-end;
}

.order-item {
    background: var(--light-bg);
    padding: 20px;
    margin-bottom: 15px;
    border-radius: var(--border-radius);
    transition: var(--transition);
    border-left: 4px solid #fa709a;
    position: relative;
}

.order-item:hover {
    background: #e9ecef;
    transform: translateX(3px);
}

.order-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 2px solid rgba(0, 0, 0, 0.1);
}

.order-item-header strong {
    color: var(--text-primary);
    font-size: 1.3rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 8px;
}

.order-total {
    font-size: 1.3rem;
    font-weight: 700;
    color: #667eea;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 5px;
}

.order-item-header .remove-btn {
    background: var(--danger-gradient);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: 0 2px 8px rgba(255, 107, 107, 0.3);
    min-width: 90px;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 36px;
}

.order-item-header .remove-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 107, 107, 0.4);
}

.order-item ul {
    margin: 15px 0;
    padding-left: 0;
    list-style: none;
}

.order-item li {
    margin-bottom: 8px;
    color: var(--text-secondary);
    padding: 10px 15px;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.order-item li:last-child {
    margin-bottom: 0;
}

.order-item-product {
    flex: 2;
    text-align: left;
    word-break: break-word;
}

.order-item-quantity {
    flex: 1;
    text-align: center;
    font-weight: 600;
}

.order-item-price {
    flex: 1;
    text-align: right;
    font-weight: 600;
    color: var(--text-primary);
}

.order-item small {
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: block;
    text-align: right;
    margin-top: 10px;
    font-weight: 500;
}

.emoji {
    font-size: 1.2em;
    margin-right: 6px;
    vertical-align: middle;
    display: inline-block;
    line-height: 1;
}

#toppings-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

#toppings-modal .modal-content {
    background: var(--card-bg);
    padding: 30px;
    border-radius: var(--border-radius);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from { opacity: 0; transform: scale(0.9) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

#toppings-modal h2 {
    margin-top: 0;
    color: var(--text-primary);
    font-size: 1.8rem;
    text-align: center;
    font-weight: 700;
}

#toppings-modal .toppings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 15px;
    margin: 20px 0;
}

#toppings-modal .topping-card {
    background: var(--light-bg);
    padding: 15px;
    border-radius: var(--border-radius);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    min-height: 100px;
}

#toppings-modal .topping-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

#toppings-modal .topping-card.selected {
    background: var(--success-gradient);
    color: white;
    border-color: #43e97b;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(67, 233, 123, 0.3);
}

#toppings-modal .topping-card h4 {
    margin: 0 0 8px 0;
    font-size: 1rem;
    font-weight: 600;
}

#toppings-modal .modal-buttons {
    display: flex;
    gap: 15px;
    margin-top: 25px;
}

@media (max-width: 1024px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }
    
    header h1 {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    body {
        padding: 15px;
    }
    
    .container {
        padding: 0;
    }
    
    header {
        padding: 20px;
        margin-bottom: 20px;
    }
    
    header h1 {
        font-size: 1.8rem;
    }
    
    .tabs {
        flex-direction: column;
        align-items: center;
    }
    
    .tab-btn {
        width: 90%;
        margin: 5px 0;
        padding: 15px;
    }
    
    .main-content {
        gap: 20px;
    }
    
    .products-section, .cart-section {
        padding: 20px;
    }
    
    .products-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 15px;
    }
    
    .product-card {
        padding: 15px;
        min-height: 180px;
    }
    
    .cart-total {
        font-size: 1.4rem;
        padding: 15px;
    }
    
    .cart-actions {
        flex-direction: column;
    }
    
    .cart-item {
        grid-template-columns: 1fr;
        gap: 12px;
        text-align: center;
        min-height: auto;
        padding: 20px;
    }
    .cart-item > span:first-child {
        text-align: center;
    }
    
    .cart-item > span:nth-child(2),
    .cart-item > span:nth-child(4) {
        text-align: center;
        justify-content: center;
    }
    
    .quantity-controls {
        justify-content: center;
    }
    
    .quantity-btn {
        width: 50px;
        height: 50px;
        font-size: 1.4rem;
    }
    
    .quantity-display {
        font-size: 1.2rem;
        min-width: 25px;
        margin: 0 8px;
    }
    
    .remove-btn {
        padding: 15px 25px;
        font-size: 1.1rem;
        min-width: 50px;
        min-height: 50px;
    }
    
    .order-item-header {
        flex-direction: row;
        gap: 15px;
        align-items: center;
    }
    
    .order-item-header > div {
        width: auto;
        text-align: left;
    }
    
    .order-item-header .remove-btn {
        align-self: center;
        min-width: 90px;
        padding: 10px 20px;
        font-size: 1rem;
    }
    
    .order-item li {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
        padding: 12px;
    }
    
    .order-item-product {
        text-align: left;
        width: 100%;
    }
    
    .order-item-quantity, .order-item-price {
        text-align: left;
        width: 100%;
    }
    
    .order-item small {
        text-align: center;
    }
    
    #toppings-modal .toppings-grid {
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    }
}

@media (max-width: 480px) {
    .products-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .cart-item {
        padding: 15px;
        gap: 10px;
    }
    
    .quantity-btn {
        width: 55px;
        height: 55px;
        font-size: 1.5rem;
    }
    
    .quantity-display {
        font-size: 1.3rem;
        min-width: 30px;
        margin: 0 10px;
    }
    
    .remove-btn {
        padding: 15px 25px;
        font-size: 1.1rem;
        min-width: 55px;
        min-height: 55px;
    }
    
    #toppings-modal .toppings-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .product-card {
        min-height: 160px;
    }
    
    .order-item-header strong {
        font-size: 1.2rem;
    }
    
    .order-total {
        font-size: 1.2rem;
    }
    
    .order-item-header .remove-btn {
        min-width: 100px;
        padding: 8px 16px;
        font-size: 0.9rem;
    }
    
}