/* ============================================
   GLOBAL STYLES
   ============================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: #1f2937;
    background-color: #ffffff;
    line-height: 1.6;
}

/* ============================================
   CONTAINER & GRID
   ============================================ */

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

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
    position: sticky;
    top: 0;
    background: white;
    border-bottom: 1px solid #e5e7eb;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    font-size: 1.5em;
    font-weight: 700;
    color: #1f2937;
    text-decoration: none;
    transition: color 0.3s;
}

.nav-logo:hover {
    color: #2563eb;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-link {
    text-decoration: none;
    color: #6b7280;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-link:hover,
.nav-link.active {
    color: #2563eb;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #1f2937;
    border-radius: 2px;
    transition: all 0.3s;
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    padding: 100px 0 80px;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5em;
    line-height: 1.2;
    margin-bottom: 20px;
    color: #1f2937;
}

.hero-content p {
    font-size: 1.1em;
    color: #6b7280;
    margin-bottom: 30px;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-phone {
    width: 300px;
    height: 600px;
    background: linear-gradient(135deg, #1f2937 0%, #374151 100%);
    border-radius: 40px;
    padding: 15px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    position: relative;
}

.hero-phone::after {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 150px;
    height: 25px;
    background: #1f2937;
    border-radius: 0 0 25px 25px;
    z-index: 10;
}

/* ============================================
   BUTTONS
   ============================================ */

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 1em;
}

.btn-primary {
    background: #1f2937;
    color: white;
}

.btn-primary:hover {
    background: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
    background: transparent;
    color: #2563eb;
    border: 2px solid #2563eb;
    margin-left: 15px;
}

.btn-secondary:hover {
    background: #2563eb;
    color: white;
}

.btn-lg {
    padding: 16px 40px;
    font-size: 1.1em;
}

/* ============================================
   CATEGORY CARDS
   ============================================ */

.categories {
    padding: 80px 0;
    background: #f9fafb;
}

.categories h2 {
    font-size: 2.5em;
    margin-bottom: 50px;
    text-align: center;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.category-card {
    background: white;
    padding: 40px;
    border-radius: 10px;
    text-align: center;
    transition: all 0.3s;
    border: 1px solid #e5e7eb;
    cursor: pointer;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.category-icon {
    font-size: 3em;
    margin-bottom: 15px;
}

.category-card h3 {
    font-size: 1.3em;
    margin-bottom: 10px;
}

.category-card p {
    color: #6b7280;
}

/* ============================================
   FEATURED PRODUCTS
   ============================================ */

.featured {
    padding: 80px 0;
}

.featured h2 {
    font-size: 2.5em;
    margin-bottom: 10px;
    text-align: center;
}

.section-subtitle {
    text-align: center;
    color: #6b7280;
    margin-bottom: 50px;
    font-size: 1.1em;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s;
    border: 1px solid #e5e7eb;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

.product-card:hover {
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
}

.product-image {
    width: 100%;
    height: 300px;
    background: #f3f4f6;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: all 0.3s;
}

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

.product-content {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-category {
    font-size: 0.85em;
    color: #2563eb;
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 8px;
}

.product-name {
    font-size: 1.1em;
    font-weight: 600;
    margin-bottom: 8px;
    color: #1f2937;
}

.product-rating {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 12px;
    font-size: 0.9em;
}

.stars {
    color: #fbbf24;
}

.product-price {
    font-size: 1.3em;
    font-weight: 700;
    color: #1f2937;
    margin-top: auto;
}

.product-original-price {
    font-size: 0.9em;
    color: #9ca3af;
    text-decoration: line-through;
    margin-left: 10px;
}

/* ============================================
   WHY DIFFERENT SECTION
   ============================================ */

.why-different {
    padding: 100px 0;
    background: #1f2937;
    color: white;
}

.why-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.why-text h2 {
    font-size: 2.5em;
    margin-bottom: 20px;
}

.why-text p {
    font-size: 1.1em;
    margin-bottom: 30px;
    color: #d1d5db;
    line-height: 1.8;
}

.why-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.speaker-icon {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, #374151 0%, #1f2937 100%);
    border-radius: 50%;
    box-shadow: 0 0 60px rgba(255, 255, 255, 0.1);
}

/* ============================================
   NEWSLETTER
   ============================================ */

.newsletter {
    padding: 60px 0;
    text-align: center;
}

.newsletter h2 {
    font-size: 2em;
    margin-bottom: 30px;
}

.newsletter-form {
    display: flex;
    gap: 10px;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: 12px 20px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 1em;
}

.newsletter-form input::placeholder {
    color: #9ca3af;
}

/* ============================================
   ARTICLES
   ============================================ */

.articles {
    padding: 80px 0;
    background: #f9fafb;
}

.articles h2 {
    font-size: 2.5em;
    margin-bottom: 50px;
    text-align: center;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
}

.article-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    transition: all 0.3s;
    border: 1px solid #e5e7eb;
}

.article-image {
    width: 100%;
    height: 250px;
    background: linear-gradient(135deg, #e5e7eb 0%, #d1d5db 100%);
    position: relative;
}

.article-card h3 {
    font-size: 1.3em;
    padding: 20px 20px 10px;
}

.article-card p {
    padding: 0 20px 20px;
    color: #6b7280;
}

.read-more {
    display: inline-block;
    padding: 10px 20px;
    margin: 0 20px 20px;
    color: #2563eb;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.read-more:hover {
    color: #1d4ed8;
    transform: translateX(5px);
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: #1f2937;
    color: #d1d5db;
    padding: 60px 0 20px;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h4 {
    color: white;
    margin-bottom: 15px;
}

.footer-section p {
    margin-bottom: 15px;
    font-size: 0.9em;
}

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

.footer-section a {
    color: #9ca3af;
    text-decoration: none;
    transition: color 0.3s;
    display: block;
    margin-bottom: 10px;
}

.footer-section a:hover {
    color: #2563eb;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 15px;
}

.social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: #374151;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.social-links a:hover {
    background: #2563eb;
    color: white;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 30px;
    text-align: center;
    color: #9ca3af;
    font-size: 0.9em;
}

/* ============================================
   SHOP PAGE LAYOUT
   ============================================ */

.shop-header {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    padding: 60px 0;
    text-align: center;
    margin-bottom: 60px;
}

.shop-header h1 {
    font-size: 2.5em;
    margin-bottom: 15px;
}

.shop-header p {
    color: #6b7280;
    font-size: 1.1em;
}

.shop-container {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 40px;
    margin-bottom: 80px;
}

/* ============================================
   SIDEBAR FILTERS
   ============================================ */

.shop-sidebar {
    background: #f9fafb;
    padding: 30px;
    border-radius: 10px;
    height: fit-content;
    position: sticky;
    top: 90px;
}

.filter-group {
    margin-bottom: 35px;
}

.filter-group h3 {
    font-size: 1.1em;
    margin-bottom: 15px;
    color: #1f2937;
}

.checkbox {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    cursor: pointer;
    user-select: none;
}

.checkbox input {
    cursor: pointer;
}

.checkbox span {
    color: #6b7280;
    font-size: 0.95em;
}

#priceRange {
    width: 100%;
    cursor: pointer;
}

#sortBy {
    width: 100%;
    padding: 10px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    background: white;
}

/* ============================================
   PRODUCT DETAIL PAGE
   ============================================ */

.breadcrumb {
    padding: 20px 0;
    background: #f9fafb;
    margin-bottom: 40px;
}

.breadcrumb a {
    color: #2563eb;
    text-decoration: none;
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    color: #9ca3af;
    margin: 0 10px;
}

.product-detail {
    margin-bottom: 80px;
}

.product-detail .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.product-gallery {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.main-image {
    width: 100%;
    height: 500px;
    background: #f9fafb;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.main-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.thumbnails {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.thumbnail {
    width: 100%;
    height: 120px;
    background: #f9fafb;
    border: 2px solid transparent;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    overflow: hidden;
}

.thumbnail img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.thumbnail:hover {
    border-color: #2563eb;
}

.product-info {
    display: flex;
    flex-direction: column;
}

.product-info h1 {
    font-size: 2em;
    margin-bottom: 15px;
}

.rating {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.stars {
    color: #fbbf24;
    font-size: 1.2em;
}

.review-count {
    color: #6b7280;
}

.price-section {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.price {
    font-size: 2em;
    font-weight: 700;
    color: #2563eb;
}

.original-price {
    font-size: 1.2em;
    color: #9ca3af;
    text-decoration: line-through;
}

.product-options {
    margin: 30px 0;
    padding: 30px 0;
    border-top: 1px solid #e5e7eb;
    border-bottom: 1px solid #e5e7eb;
}

.option-group {
    margin-bottom: 20px;
}

.option-group label {
    display: block;
    margin-bottom: 10px;
    font-weight: 600;
    color: #1f2937;
}

.option-group select {
    width: 100%;
    padding: 12px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 1em;
}

.quantity-control {
    display: flex;
    gap: 10px;
    align-items: center;
    width: fit-content;
}

.qty-btn {
    width: 40px;
    height: 40px;
    border: 1px solid #d1d5db;
    background: #f9fafb;
    border-radius: 6px;
    cursor: pointer;
    font-size: 1.2em;
    transition: all 0.3s;
}

.qty-btn:hover {
    background: #2563eb;
    color: white;
    border-color: #2563eb;
}

.quantity-control input {
    width: 60px;
    height: 40px;
    text-align: center;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 1em;
}

.product-specs {
    margin: 30px 0;
}

.product-specs h3 {
    font-size: 1.2em;
    margin-bottom: 15px;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #e5e7eb;
}

.payment-methods {
    margin: 30px 0;
}

.payment-methods h3 {
    font-size: 1.1em;
    margin-bottom: 15px;
}

.payment-icons {
    display: flex;
    gap: 15px;
}

.payment-icons img {
    height: 30px;
    width: auto;
}

/* ============================================
   PRODUCT TABS
   ============================================ */

.product-tabs {
    background: #f9fafb;
    padding: 60px 0;
    margin-bottom: 80px;
}

.tabs-header {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
    border-bottom: 1px solid #e5e7eb;
}

.tab-button {
    background: none;
    border: none;
    padding: 15px 0;
    font-size: 1em;
    font-weight: 600;
    color: #6b7280;
    cursor: pointer;
    border-bottom: 3px solid transparent;
    transition: all 0.3s;
}

.tab-button.active {
    color: #2563eb;
    border-bottom-color: #2563eb;
}

.tab-button:hover {
    color: #2563eb;
}

.tab-content {
    padding: 40px 0;
}

.tab-content h3 {
    font-size: 1.3em;
    margin-bottom: 20px;
}

.tab-content h4 {
    font-size: 1.1em;
    margin: 20px 0 10px;
}

.tab-content ul {
    margin-left: 20px;
}

.tab-content li {
    margin-bottom: 10px;
    color: #6b7280;
}

.specs-table {
    width: 100%;
    border-collapse: collapse;
}

.specs-table tr {
    border-bottom: 1px solid #e5e7eb;
}

.specs-table td {
    padding: 15px 0;
}

.specs-table td:first-child {
    font-weight: 600;
    width: 30%;
}

/* ============================================
   RELATED PRODUCTS
   ============================================ */

.related-products {
    padding: 80px 0;
}

.related-products h2 {
    font-size: 2.5em;
    margin-bottom: 50px;
    text-align: center;
}

/* ============================================
   CONTACT PAGE
   ============================================ */

.contact-header {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    padding: 60px 0;
    text-align: center;
    margin-bottom: 60px;
}

.contact-header h1 {
    font-size: 2.5em;
    margin-bottom: 15px;
}

.contact-section {
    padding: 80px 0;
}

.contact-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group label {
    margin-bottom: 8px;
    font-weight: 600;
    color: #1f2937;
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: 12px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 1em;
    font-family: inherit;
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.form-message {
    padding: 15px 20px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.form-message.success {
    background: #d1fae5;
    color: #065f46;
}

.form-message.error {
    background: #fee2e2;
    color: #7f1d1d;
}

.contact-info {
    background: #f9fafb;
    padding: 30px;
    border-radius: 10px;
    height: fit-content;
}

.contact-info h2 {
    font-size: 1.5em;
    margin-bottom: 30px;
}

.info-block {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #e5e7eb;
}

.info-block:last-child {
    border-bottom: none;
}

.info-block h3 {
    font-size: 1.1em;
    margin-bottom: 10px;
}

.info-block a {
    color: #2563eb;
    text-decoration: none;
    font-weight: 600;
}

.info-block p {
    color: #6b7280;
    font-size: 0.95em;
}

.faq-section {
    padding: 80px 0;
    background: #f9fafb;
}

.faq-section h2 {
    font-size: 2.5em;
    text-align: center;
    margin-bottom: 50px;
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.faq-item {
    background: white;
    padding: 30px;
    border-radius: 10px;
    border: 1px solid #e5e7eb;
}

.faq-item h3 {
    font-size: 1.1em;
    margin-bottom: 15px;
    color: #1f2937;
}

.faq-item p {
    color: #6b7280;
    line-height: 1.8;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    .nav-menu {
        display: none;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-content h1 {
        font-size: 2.5em;
    }

    .hero-phone {
        width: 250px;
        height: 500px;
    }

    .why-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .category-grid,
    .articles-grid {
        grid-template-columns: 1fr;
    }

    .newsletter-form {
        flex-direction: column;
    }

    .product-detail .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .contact-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .shop-container {
        grid-template-columns: 1fr;
    }

    .shop-sidebar {
        position: static;
        top: auto;
    }

    .btn-secondary {
        margin-left: 0;
        margin-top: 10px;
        display: block;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-content h1 {
        font-size: 2em;
    }

    .featured h2,
    .articles h2 {
        font-size: 1.8em;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }

    .nav-container {
        height: 60px;
    }

    .nav-logo {
        font-size: 1.2em;
    }
}