/* Modern eCommerce Platform Styles */

:root {
    --primary-color: #007bff;
    --primary-dark: #0056b3;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --success-dark: #1e7e34;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --white: #ffffff;
    --black: #000000;
    --border-color: #dee2e6;
    --shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    --border-radius: 0.375rem;
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--light-color);
}

/* Header Styles */
.header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-size: 1.75rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

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

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 500;
    transition: var(--transition);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
}

.nav-links a:hover {
    color: var(--primary-color);
    background-color: rgba(0, 123, 255, 0.1);
}

.search-bar {
    display: flex;
    align-items: center;
    background: var(--light-color);
    border-radius: 50px;
    padding: 0.5rem 1rem;
    min-width: 300px;
    border: 2px solid transparent;
    transition: var(--transition);
}

.search-bar:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.search-bar input {
    border: none;
    background: none;
    outline: none;
    flex: 1;
    padding: 0.25rem;
    font-size: 1rem;
}

.search-bar button {
    background: none;
    border: none;
    color: var(--secondary-color);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 50%;
    transition: var(--transition);
}

.search-bar button:hover {
    color: var(--primary-color);
    background-color: rgba(0, 123, 255, 0.1);
}

.cart-icon {
    position: relative;
    padding: 0.5rem;
    border-radius: 50%;
    transition: var(--transition);
}

.cart-icon:hover {
    background-color: rgba(0, 123, 255, 0.1);
}

.cart-count {
    position: absolute;
    top: -8px;
    right: -8px;
    background: var(--danger-color);
    color: var(--white);
    border-radius: 50%;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: bold;
}

/* Main Content */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.hero-section {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    padding: 4rem 0;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 300;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    border: none;
    transition: var(--transition);
    font-size: 1rem;
}

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

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

.btn-secondary {
    background: var(--white);
    color: var(--primary-color);
    border: 2px solid var(--white);
}

.btn-secondary:hover {
    background: transparent;
    color: var(--white);
}

.btn-outline {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
}

/* Product Grid */
.section {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--dark-color);
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.product-card {
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
    position: relative;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.product-image-container {
    position: relative;
    overflow: hidden;
    height: 320px;
    width: 100%;
    background-color: var(--light-color);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius);
}

.product-image {
    width: 100%;
    height: 320px;
    object-fit: cover;
    transition: var(--transition);
    display: block;
}

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

.placeholder-image {
    width: 100%;
    height: 320px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-color);
    font-size: 3rem;
    opacity: 0.6;
    border-radius: var(--border-radius);
}

.product-info {
    padding: 1.5rem;
}

.product-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--dark-color);
}

.product-description {
    color: var(--secondary-color);
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.product-price {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.price-current {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--success-color);
}

.price-original {
    font-size: 1.25rem;
    color: var(--secondary-color);
    text-decoration: line-through;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.stars {
    color: var(--warning-color);
}

.rating-count {
    color: var(--secondary-color);
    font-size: 0.875rem;
}

.product-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* Categories */
.categories-section {
    background: var(--white);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.category-card {
    text-align: center;
    padding: 2rem 1rem;
    border-radius: var(--border-radius);
    background: var(--light-color);
    transition: var(--transition);
    text-decoration: none;
    color: var(--dark-color);
}

.category-card:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: translateY(-5px);
}

.category-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.category-name {
    font-size: 1.25rem;
    font-weight: 600;
}

/* Product Detail Page Specific Styles */
.main-image {
    width: 100%;
    height: 500px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 1rem;
    background-color: var(--light-color);
    display: block;
}

.placeholder-main-image {
    width: 100%;
    height: 500px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: 10px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-color);
    font-size: 4rem;
    opacity: 0.6;
}

.thumbnail {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 5px;
    cursor: pointer;
    opacity: 0.7;
    transition: opacity 0.3s;
    flex-shrink: 0;
    background-color: var(--light-color);
    display: block;
}

.thumbnail:hover,
.thumbnail.active {
    opacity: 1;
}

.image-thumbnails {
    display: flex;
    gap: 0.5rem;
    overflow-x: auto;
    padding-bottom: 0.5rem;
}

/* Category Images */
.category-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: var(--border-radius);
    background-color: var(--light-color);
    display: block;
}

.category-placeholder {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--secondary-color);
    font-size: 2.5rem;
    opacity: 0.6;
}

/* Product Badge Positioning */
.product-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 2;
    background-color: var(--danger-color);
    color: white;
}

.sale-badge {
    background-color: var(--danger-color);
}

.out-of-stock-badge {
    background-color: var(--secondary-color);
}

.new-badge {
    background-color: var(--success-color);
}

.featured-badge {
    background-color: var(--warning-color);
    color: var(--dark-color);
}

/* Responsive Image Containers */
@media (max-width: 768px) {
    .product-image-container {
        height: 240px;
    }
    
    .product-image {
        height: 240px;
    }
    
    .placeholder-image {
        height: 240px;
        font-size: 2.5rem;
    }
    
    .main-image,
    .placeholder-main-image {
        height: 350px;
    }
    
    .placeholder-main-image {
        font-size: 3rem;
    }
}

@media (max-width: 480px) {
    .product-image-container {
        height: 200px;
    }
    
    .product-image {
        height: 200px;
    }
    
    .placeholder-image {
        height: 200px;
        font-size: 2rem;
    }
    
    .main-image,
    .placeholder-main-image {
        height: 280px;
    }
    
    .placeholder-main-image {
        font-size: 2.5rem;
    }
}

/* Footer */

.footer {
    background: var(--dark-color);
    color: var(--white);
    padding: 3rem 0 1rem;
    margin-top: 50px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    opacity: 1;
    color: var(--primary-color);
}

.footer-bottom {
    border-top: 1px solid var(--secondary-color);
    padding-top: 1rem;
    text-align: center;
    opacity: 0.7;
}

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

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--dark-color);
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* Cart */
.cart-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    background: var(--white);
}

.cart-item-image {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: var(--border-radius);
    background-color: var(--light-color);
    display: block;
}

.cart-item-details {
    flex: 1;
}

.cart-item-title {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.cart-item-price {
    color: var(--success-color);
    font-weight: bold;
}

.quantity-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin: 0.5rem 0;
}

.quantity-btn {
    width: 30px;
    height: 30px;
    border: 1px solid var(--border-color);
    background: var(--white);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.quantity-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    border-color: var(--primary-color);
}

.quantity-input {
    width: 60px;
    text-align: center;
    padding: 0.25rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
}

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    border: 1px solid transparent;
}

.alert-success {
    background: rgba(40, 167, 69, 0.1);
    color: var(--success-color);
    border-color: rgba(40, 167, 69, 0.2);
}

.alert-danger {
    background: rgba(220, 53, 69, 0.1);
    color: var(--danger-color);
    border-color: rgba(220, 53, 69, 0.2);
}

.alert-info {
    background: rgba(23, 162, 184, 0.1);
    color: var(--info-color);
    border-color: rgba(23, 162, 184, 0.2);
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 2rem auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-links {
        flex-wrap: wrap;
        gap: 1rem;
    }
    
    .search-bar {
        min-width: auto;
        width: 100%;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 1rem;
    }
    
    .category-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    }
    
    .cart-item {
        flex-direction: column;
        text-align: center;
    }
    
    .section {
        padding: 2rem 0;
    }
    
    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .navbar {
        padding: 1rem;
    }
    
    .container {
        padding: 0 0.5rem;
    }
    
    .hero-content h1 {
        font-size: 1.75rem;
    }
    
    .product-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

/* Animations */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

.slide-in {
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.flex-wrap { flex-wrap: wrap; }
.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--secondary-color); }
.text-success { color: var(--success-color); }
.text-danger { color: var(--danger-color); }
.text-warning { color: var(--warning-color); }
.text-info { color: var(--info-color); }

.bg-primary { background-color: var(--primary-color); }
.bg-secondary { background-color: var(--secondary-color); }
.bg-light { background-color: var(--light-color); }
.bg-dark { background-color: var(--dark-color); }
.bg-white { background-color: var(--white); }

/* Category Products Section */
.category-products-section {
    padding: 3rem 0;
    background: var(--light-color);
}

.category-products-section:nth-child(odd) {
    background: var(--white);
}

.category-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.category-section-title {
    text-align: left;
    margin-bottom: 0;
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--dark-color);
    position: relative;
}

.category-section-title::after {
    content: '';
    position: absolute;
    bottom: -1rem;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

.show-all-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(147, 0, 0, 0.2);
}

.show-all-btn:hover {
    background: var(--dark-color);
    transform: translateX(5px);
    color: var(--white);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
    text-decoration: none;
}

.show-all-btn i {
    font-size: 0.85rem;
    transition: transform 0.3s ease;
}

.show-all-btn:hover i {
    transform: translateX(5px);
}

.category-product-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

@media (max-width: 1200px) {
    .category-product-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 992px) {
    .category-product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .category-section-title {
        font-size: 1.5rem;
    }
}

@media (max-width: 576px) {
    .category-product-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .category-section-header {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        gap: 0.5rem;
    }
    
    .category-section-title {
        font-size: 1.2rem;
    }
    
    .category-section-title::after {
        width: 40px;
        height: 2px;
    }
    
    .show-all-btn {
        padding: 0.5rem 1rem;
        font-size: 0.85rem;
    }
}