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

:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #10b981;
    --secondary-dark: #059669;
    --accent-color: #f59e0b;
    --text-color: #1f2937;
    --text-light: #6b7280;
    --bg-color: #f9fafb;
    --card-bg: #ffffff;
    --border-color: #e5e7eb;
    --border-light: #f3f4f6;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-hover: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --gradient-primary: var(--primary-color);
    --gradient-success: var(--secondary-color);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Inter', Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
}

header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--text-color);
    padding: 0;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.navbar-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-color);
}

.navbar-brand h1 {
    font-size: 1.75rem;
    font-weight: 800;
    margin: 0;
    color: var(--primary-color);
    letter-spacing: -0.02em;
}

.navbar-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.cart-button {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-md);
}

.cart-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cart-button:active {
    transform: translateY(0);
}

.cart-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    background: #ef4444;
    color: white;
    border-radius: 50%;
    width: 22px;
    height: 22px;
    font-size: 11px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    border: 2.5px solid white;
    box-shadow: var(--shadow-md);
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.8;
    }
}

.subtitle {
    font-size: 0.9rem;
    opacity: 0.7;
    margin: 0;
    display: none;
}

main {
    flex: 1;
    padding: 3rem 0;
    min-height: calc(100vh - 200px);
    animation: fadeIn 0.5s ease-out;
}

.page-header {
    margin-bottom: 2.5rem;
}

.page-header h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-color);
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
}

.page-header p {
    color: var(--text-light);
    font-size: 1.1rem;
    font-weight: 400;
}

.loading, .error {
    text-align: center;
    padding: 2rem;
    font-size: 1.1rem;
}

.error {
    color: #e74c3c;
    background: #fee;
    border: 1px solid #e74c3c;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    animation: fadeInUp 0.6s ease-out;
}

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

.product-card {
    background: var(--card-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border: 1px solid var(--border-color);
    position: relative;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.product-card:hover {
    transform: none;
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-light);
}

.product-card:hover::before {
    transform: none;
}

.product-image {
    width: 100%;
    height: 160px;
    object-fit: cover;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    transition: transform 0.5s ease;
}

.product-card:hover .product-image {
    /* transform: scale(1.05); Removed scale effect */
}

.product-info {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.product-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-color);
    line-height: 1.4;
    min-height: auto;
    margin-bottom: 0;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    letter-spacing: -0.01em;
}

.product-description {
    color: var(--text-light);
    font-size: 0.9rem;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    flex: unset;
    margin-bottom: 0;
}

.product-price {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    margin: 0.25rem 0;
    letter-spacing: -0.02em;
}

.product-stock {
    font-size: 0.85rem;
    color: #666;
    margin: 0;
}

.product-stock.low {
    color: #e74c3c;
}

.product-stock.out {
    color: #e74c3c;
    font-weight: 600;
}

.btn {
    display: inline-block;
    padding: 0.6rem 1rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 10px;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
    text-align: center;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn:disabled {
    background: #d1d5db;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-success {
    background: var(--secondary-color);
}

.btn-success:hover {
    background: var(--secondary-dark);
}

/* 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);
    animation: fadeIn 0.3s;
}

.modal-content {
    background-color: var(--card-bg);
    margin: 5% auto;
    padding: 2.5rem;
    border-radius: 20px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideDown 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

.close {
    color: var(--text-light);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    right: 1.25rem;
    top: 1.25rem;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.2s ease;
    background: var(--border-light);
}

.close:hover {
    color: var(--text-color);
    background: var(--border-color);
    transform: rotate(90deg);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-color);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--card-bg);
    color: var(--text-color);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
    transform: translateY(-1px);
}

.form-group input:hover,
.form-group select:hover {
    border-color: var(--primary-light);
}

.form-group small {
    display: block;
    margin-top: 0.25rem;
    color: #666;
    font-size: 0.85rem;
}

.contact-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

.contact-option {
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.contact-option:hover {
    border-color: var(--primary-color);
    background: #f0f7ff;
}

.contact-option.selected {
    border-color: var(--primary-color);
    background: #e8f4ff;
}

.contact-option input[type="radio"] {
    display: none;
}

footer {
    background: #f8f9fa;
    color: #666;
    text-align: center;
    padding: 2rem 0;
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
}

/* Notification System */
.notification-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-width: 400px;
}

.notification {
    background: var(--card-bg);
    border-radius: 8px;
    padding: 1rem 1.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    display: flex;
    align-items: center;
    gap: 1rem;
    animation: slideInRight 0.3s ease-out;
    border-left: 4px solid;
    min-width: 300px;
}

.notification.success {
    border-left-color: var(--secondary-color);
}

.notification.error {
    border-left-color: #e74c3c;
}

.notification.warning {
    border-left-color: #f39c12;
}

.notification.info {
    border-left-color: var(--primary-color);
}

.notification-content {
    flex: 1;
}

.notification-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
    color: var(--text-color);
}

.notification-message {
    color: #666;
    font-size: 0.9rem;
}

.notification-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #999;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    transition: color 0.2s;
}

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

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Confirmation Dialog */
.confirm-dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 10001;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s;
}

.confirm-dialog {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 2rem;
    max-width: 400px;
    width: 90%;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    animation: slideDown 0.3s;
}

.confirm-dialog-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.confirm-dialog-message {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.confirm-dialog-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
}

.confirm-dialog-actions button {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
}

.confirm-dialog-actions .btn-cancel {
    background: #f0f0f0;
    color: var(--text-color);
}

.confirm-dialog-actions .btn-cancel:hover {
    background: #e0e0e0;
}

.confirm-dialog-actions .btn-confirm {
    background: var(--primary-color);
    color: white;
}

.confirm-dialog-actions .btn-confirm:hover {
    background: var(--primary-dark);
}

@media (max-width: 768px) {
    .products-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .contact-options {
        grid-template-columns: 1fr;
    }
    
    .navbar {
        padding: 1rem;
        flex-wrap: wrap;
    }
    
    .navbar-brand h1 {
        font-size: 1.5rem;
    }
    
    .navbar-actions {
        flex-wrap: wrap;
        gap: 0.5rem;
    }
    
    .cart-button {
        padding: 0.6rem;
        font-size: 0.9rem;
    }
    
    .page-header h2 {
        font-size: 1.75rem;
    }
    
    main {
        padding: 2rem 0;
    }
    
    .notification-container {
        right: 10px;
        bottom: 10px;
        max-width: calc(100% - 20px);
    }
    
    .notification {
        min-width: auto;
        padding: 0.75rem 1rem;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
        padding: 1.5rem;
        max-height: 85vh;
    }
    
    .product-card {
        margin: 0;
    }
    
    .product-info {
        padding: 1rem;
    }
    
    .product-name {
        font-size: 1.1rem;
        min-height: auto;
    }
    
    .product-price {
        font-size: 1.5rem;
    }
}