/* Custom Variables */
:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #f59e0b;
    --text-color: #1f2937;
    --light-gray: #f3f4f6;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --danger-color: #ef4444;
}

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Poppins:wght@400;500;600;700&display=swap');

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
}

/* Header Styles */
.header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.navbar-brand.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--secondary-color);
}

.nav-link {
    color: var(--secondary-color) !important;
    font-weight: 500;
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

.search-bar {
    display: flex;
    align-items: center;
}

.search-bar input {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px 0 0 4px;
    outline: none;
}

.search-bar button {
    padding: 0.5rem 1rem;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
}

/* Hero Section */
.hero {
    background-color: var(--light-gray);
    padding: 3rem 0;
}

.breadcrumb-item a {
    color: var(--primary-color);
    text-decoration: none;
}

.product-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding: 0 1rem;
}

.product-gallery {
    border: none;
    box-shadow: 0 0 15px rgba(0,0,0,0.1);
}

.main-image {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
}

.main-image img {
    width: 100%;
    height: auto;
    transition: transform 0.3s ease;
}

.thumbnail {
    cursor: pointer;
    border: 2px solid transparent;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.thumbnail:hover {
    transform: scale(1.05);
    border-color: var(--primary-color);
}

.thumbnail.active {
    border-color: var(--primary-color);
}

.product-info {
    padding: 1rem;
}

.product-info h1 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.price-section .price {
    color: var(--accent-color);
}

.btn-check:checked + .btn-outline-dark {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: white;
}

/* Product Details Tabs */
.nav-tabs .nav-link {
    color: var(--secondary-color);
    font-weight: 500;
    border: none;
    padding: 1rem 1.5rem;
}

.nav-tabs .nav-link.active {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
}

.tab-content {
    padding: 2rem;
    background: white;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 0 15px rgba(0,0,0,0.1);
}

/* Reviews Section */
.review.card {
    border: none;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
    transition: transform 0.3s ease;
}

.review.card:hover {
    transform: translateY(-5px);
}

.rating {
    color: #f1c40f;
}

/* Footer */
.footer {
    background-color: var(--secondary-color);
    color: white;
    padding: 4rem 0 2rem;
}

.footer h5 {
    color: white;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.footer ul li {
    margin-bottom: 0.75rem;
}

.footer a {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: white;
}

.social-icons a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.social-icons a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.payment-methods i {
    color: rgba(255,255,255,0.8);
}

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

.review {
    animation: fadeIn 0.5s ease-in;
}

/* Custom Button Styles */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.btn-primary:hover {
    background-color: #2980b9;
    border-color: #2980b9;
}

.btn-outline-primary {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

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

/* Modal Styles */
.modal-content {
    border: none;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

.modal-header {
    border-bottom: 1px solid var(--border-color);
    background-color: var(--light-gray);
    border-radius: 8px 8px 0 0;
}

.modal-footer {
    border-top: 1px solid var(--border-color);
    background-color: var(--light-gray);
    border-radius: 0 0 8px 8px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        padding: 2rem 0;
    }

    .product-info {
        padding: 1rem 0;
    }

    .nav-tabs .nav-link {
        padding: 0.75rem 1rem;
    }

    .footer {
        padding: 2rem 0 1rem;
    }
}

/* Additional Utility Classes */
.shadow-hover {
    transition: box-shadow 0.3s ease;
}

.shadow-hover:hover {
    box-shadow: 0 0 20px rgba(0,0,0,0.1);
}

.text-primary {
    color: var(--primary-color) !important;
}

.bg-primary {
    background-color: var(--primary-color) !important;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
}

/* Header Styles */
.header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: #2c3e50;
}

.nav-links a {
    text-decoration: none;
    color: #2c3e50;
    margin: 0 1rem;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #3498db;
}

.search-bar {
    display: flex;
    align-items: center;
}

.search-bar input {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px 0 0 4px;
    outline: none;
}

.search-bar button {
    padding: 0.5rem 1rem;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
}

/* Hero Section */
.hero {
    padding: 2rem 0;
    background-color: #f8f9fa;
}

.product-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding: 0 1rem;
}

.product-gallery {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.main-image {
    width: 100%;
    height: 400px;
    overflow: hidden;
    border-radius: 8px;
}

.main-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.thumbnail-container {
    display: flex;
    gap: 1rem;
}

.thumbnail {
    width: 100px;
    height: 100px;
    border-radius: 4px;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.thumbnail:hover {
    transform: scale(1.05);
}

.product-info {
    padding: 1rem;
}

.product-info h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.price {
    font-size: 1.5rem;
    font-weight: bold;
    color: #e74c3c;
    margin-bottom: 1rem;
}

.description {
    margin-bottom: 2rem;
    color: #666;
}

.buy-now-btn {
    padding: 1rem 2rem;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.buy-now-btn:hover {
    background-color: #2980b9;
}

/* Product Details Section */
.product-details {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.specifications h2,
.description h2 {
    margin-bottom: 1rem;
    color: #2c3e50;
}

.specifications ul {
    list-style-type: none;
}

.specifications li {
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.specifications li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #27ae60;
}

/* Reviews Section */
.reviews {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.reviews h2 {
    margin-bottom: 2rem;
    color: #2c3e50;
}

.review {
    background-color: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.review-text {
    margin-bottom: 0.5rem;
    font-style: italic;
}

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

.review-form {
    background-color: #f8f9fa;
    padding: 2rem;
    border-radius: 8px;
    margin-top: 2rem;
}

.review-form h3 {
    margin-bottom: 1.5rem;
    color: #2c3e50;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group textarea {
    height: 100px;
    resize: vertical;
}

.review-form button {
    padding: 0.75rem 1.5rem;
    background-color: #3498db;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.review-form button:hover {
    background-color: #2980b9;
}

/* Footer */
.footer {
    background-color: #2c3e50;
    color: white;
    padding: 2rem 0;
    margin-top: 3rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    padding: 0 1rem;
}

.footer-section h3 {
    margin-bottom: 1rem;
}

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

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

.footer-section a {
    color: #ecf0f1;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #3498db;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    color: white;
    font-size: 1.5rem;
    transition: color 0.3s ease;
}

.social-icons a:hover {
    color: #3498db;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

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

    .navbar {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }

    .search-bar {
        width: 100%;
    }

    .search-bar input {
        width: 100%;
    }
}