/* ULTRA 4K HEAVY - Styles */
:root {
    --primary: #667eea;
    --primary-dark: #5568d3;
    --secondary: #764ba2;
    --dark: #1a202c;
    --light: #f7fafc;
    --white: #ffffff;
    --shadow: 0 10px 30px rgba(0,0,0,0.1);
    --shadow-lg: 0 20px 50px rgba(0,0,0,0.2);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--dark);
    background: var(--light);
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Loading Screen */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    transition: opacity 0.5s, visibility 0.5s;
}

.loading-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loading-content {
    text-align: center;
    color: white;
    padding: 2rem;
}

.spinner {
    width: 80px;
    height: 80px;
    border: 6px solid rgba(255,255,255,0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 2rem;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-content h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
    font-weight: 900;
}

.loading-content h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.loading-content p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.progress-bar {
    width: 400px;
    max-width: 90vw;
    height: 8px;
    background: rgba(255,255,255,0.3);
    border-radius: 10px;
    margin: 0 auto 2rem;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: white;
    border-radius: 10px;
    transition: width 0.3s;
    width: 0%;
}

.loading-stats {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    font-size: 1.2rem;
    font-weight: 600;
}

/* Header */
.header {
    position: sticky;
    top: 0;
    background: rgba(255,255,255,0.98);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    z-index: 1000;
    padding: 1rem 0;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--primary);
    font-family: 'Playfair Display', serif;
}

.nav {
    display: flex;
    gap: 2rem;
}

.nav a {
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
    transition: color 0.3s;
}

.nav a:hover {
    color: var(--primary);
}

.header-actions {
    display: flex;
    gap: 1rem;
}

.icon-button {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--light);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    transition: all 0.3s;
}

.icon-button:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.cart-count {
    position: absolute;
    top: -5px;
    right: -5px;
    background: #f56565;
    color: white;
    font-size: 0.7rem;
    font-weight: 700;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Hero Section */
.hero-4k {
    position: relative;
    height: 80vh;
    min-height: 600px;
    overflow: hidden;
    margin: 0;
    padding: 0;
}

.hero-4k-slider {
    position: relative;
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1s;
}

.hero-slide.active {
    opacity: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(102,126,234,0.7), rgba(118,75,162,0.7));
}

.hero-content {
    position: relative;
    z-index: 2;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    padding: 2rem;
}

.hero-content h1 {
    font-size: clamp(2.5rem, 6vw, 5rem);
    font-weight: 900;
    margin-bottom: 1rem;
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.hero-content p {
    font-size: clamp(1.2rem, 2vw, 1.8rem);
    margin-bottom: 2rem;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

/* Buttons */
.btn {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 700;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-block;
    text-decoration: none;
}

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

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(255,255,255,0.3);
}

/* Sections */
.products-section,
.gallery-section,
.banner-grid-section,
.video-section,
.stats-section {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
    color: var(--dark);
    font-family: 'Playfair Display', serif;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: #718096;
    margin-bottom: 3rem;
}

/* Product Grid */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

.product-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: all 0.3s;
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.product-image {
    width: 100%;
    height: 300px;
    overflow: hidden;
    position: relative;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-info {
    padding: 1.5rem;
}

.product-title {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.product-price {
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--primary);
    font-family: 'Playfair Display', serif;
}

/* Gallery Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.gallery-item {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: var(--shadow);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.gallery-item:hover img {
    transform: scale(1.1);
}

/* Banner Grid */
.banner-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
}

.banner-item {
    position: relative;
    height: 400px;
    background-size: cover;
    background-position: center;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.banner-item .banner-content {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 2rem;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    color: white;
}

.banner-content h3 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

/* Video Grid */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
}

.video-item {
    position: relative;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.video-thumbnail {
    position: relative;
    width: 100%;
    height: 250px;
    overflow: hidden;
}

.video-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70px;
    height: 70px;
    background: rgba(255,255,255,0.95);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--primary);
    cursor: pointer;
    transition: all 0.3s;
}

.video-item:hover .play-button {
    transform: translate(-50%, -50%) scale(1.1);
}

.video-info {
    padding: 1.5rem;
}

.video-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

/* Stats Section */
.stats-section {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    text-align: center;
}

.stat-item i {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: var(--dark);
    color: white;
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer h3, .footer h4 {
    margin-bottom: 1rem;
}

.footer ul {
    list-style: none;
}

.footer ul li {
    margin-bottom: 0.5rem;
    opacity: 0.8;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    opacity: 0.7;
}

/* Performance Monitor */
.perf-monitor {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: rgba(0,0,0,0.95);
    color: white;
    padding: 1rem;
    border-radius: 12px;
    min-width: 250px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
    z-index: 9999;
}

.perf-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    font-weight: 700;
}

.perf-header button {
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    font-size: 1rem;
}

.perf-body {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-family: monospace;
    font-size: 0.9rem;
}

.perf-row {
    display: flex;
    justify-content: space-between;
}

.perf-row span:last-child {
    font-weight: 700;
    color: #48bb78;
}

/* Back to Top */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    left: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 9998;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
}

/* Responsive */
@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .product-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 1rem;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .banner-grid {
        grid-template-columns: 1fr;
    }
    
    .perf-monitor {
        bottom: 1rem;
        right: 1rem;
        left: 1rem;
        min-width: auto;
    }
}