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

:root {
    /* Color Palette */
    --primary-black: #000000;
    --primary-white: #ffffff;
    --gray-900: #111111;
    --gray-800: #1a1a1a;
    --gray-700: #2a2a2a;
    --gray-600: #3a3a3a;
    --gray-500: #666666;
    --gray-400: #999999;
    --gray-300: #cccccc;
    --gray-200: #e6e6e6;
    --gray-100: #f5f5f5;
    
    --accent-blue: #007AFF;
    --accent-blue-light: #5AC8FA;
    --accent-orange: #FF9500;
    --accent-orange-light: #FFCC02;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--gray-900) 0%, var(--primary-black) 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent-blue) 0%, var(--accent-blue-light) 100%);
    --gradient-hero: linear-gradient(135deg, rgba(0, 122, 255, 0.1) 0%, rgba(0, 0, 0, 0.8) 100%);
    
    /* Typography */
    --font-primary: 'Inter', 'Noto Sans SC', 'Noto Sans JP', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 3.75rem;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-base: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 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-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px rgba(0, 122, 255, 0.3);
    
    /* Transitions */
    --transition-fast: 0.15s ease-in-out;
    --transition-base: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
    
    /* Border Radius */
    --border-radius-sm: 0.375rem;
    --border-radius-base: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    --border-radius-2xl: 1.5rem;
    --border-radius-full: 9999px;
}

/* Multi-language font settings */
html[data-lang="zh"] body {
    font-family: 'Inter', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html[data-lang="en"] body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html[data-lang="ja"] body {
    font-family: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html[data-lang="ko"] body {
    font-family: 'Inter', 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html[data-lang="pt"] body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

body {
    font-family: var(--font-primary);
    line-height: 1.6;
    color: var(--primary-white);
    background-color: var(--primary-black);
    overflow-x: hidden;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Section headers */
.section-header {
    text-align: center;
    margin-bottom: var(--spacing-4xl);
}

.section-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    background: var(--gradient-accent);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-subtitle {
    font-size: var(--font-size-xl);
    color: var(--gray-300);
    max-width: 600px;
    margin: 0 auto;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-content {
    text-align: center;
}

.loading-logo {
    margin-bottom: var(--spacing-xl);
}

.logo-circles {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    justify-content: center;
}

.logo-circles .circle {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--gradient-accent);
    animation: logoFloat 2s infinite;
}

.logo-circles .circle:nth-child(2) {
    animation-delay: 0.2s;
}

.logo-circles .circle:nth-child(3) {
    animation-delay: 0.4s;
}

.logo-circles .circle:nth-child(4) {
    animation-delay: 0.6s;
}

.loading-text {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--primary-white);
    margin-bottom: var(--spacing-xl);
    letter-spacing: 0.2em;
}

.loading-progress {
    width: 200px;
    height: 2px;
    background: var(--gray-700);
    border-radius: var(--border-radius-full);
    overflow: hidden;
    margin: 0 auto;
}

.progress-bar {
    height: 100%;
    background: var(--gradient-accent);
    border-radius: var(--border-radius-full);
    width: 0;
    animation: progressLoad 3s ease-in-out forwards;
}

@keyframes logoFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes progressLoad {
    0% { width: 0; }
    100% { width: 100%; }
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--gray-800);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.95);
    box-shadow: var(--shadow-lg);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    text-decoration: none;
    color: var(--primary-white);
}

.nav-logo .logo-circles .circle {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gradient-accent);
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: 0.1em;
}

.nav-menu {
    display: flex;
    gap: var(--spacing-2xl);
}

.nav-link {
    color: var(--gray-300);
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-base);
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-white);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

/* Language Selector */
.language-selector {
    position: relative;
}

.lang-button {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: 1px solid var(--gray-600);
    border-radius: var(--border-radius-base);
    color: var(--primary-white);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-base);
}

.lang-button:hover {
    border-color: var(--accent-blue);
    background: rgba(0, 122, 255, 0.1);
}

.lang-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: var(--spacing-sm);
    background: var(--gray-900);
    border: 1px solid var(--gray-700);
    border-radius: var(--border-radius-base);
    box-shadow: var(--shadow-xl);
    min-width: 200px;
    max-height: 400px;
    overflow-y: auto;
    z-index: 1001;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
}

.lang-dropdown.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: block;
    width: 100%;
    padding: var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--gray-300);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: var(--font-size-sm);
}

.lang-option:hover {
    background: var(--gray-800);
    color: var(--primary-white);
}

/* Custom scrollbar for language dropdown */
.lang-dropdown::-webkit-scrollbar {
    width: 4px;
}

.lang-dropdown::-webkit-scrollbar-track {
    background: var(--gray-800);
}

.lang-dropdown::-webkit-scrollbar-thumb {
    background: var(--accent-blue);
    border-radius: 2px;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--spacing-sm);
    background: transparent;
    border: none;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--primary-white);
    transition: all var(--transition-base);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
}

.hero-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-hero);
    z-index: -1;
}

.hero-container {
    text-align: center;
    max-width: 800px;
    padding: 0 var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: var(--font-size-6xl);
    font-weight: 900;
    margin-bottom: var(--spacing-lg);
    color: #ffffff;
    background: none;
    animation: fadeInUp 1s ease-out;
    /* Ultra clear text rendering */
    letter-spacing: 2px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--gray-200);
    margin-bottom: var(--spacing-2xl);
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-cta {
    padding: var(--spacing-lg) var(--spacing-2xl);
    background: var(--gradient-accent);
    color: var(--primary-white);
    border: none;
    border-radius: var(--border-radius-full);
    font-size: var(--font-size-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
    animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.hero-animation {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

/* Animated Background - Making original curves move */
.animated-background {
    animation: curveFlow 20s ease-in-out infinite;
    transform-origin: center center;
}

@keyframes curveFlow {
    0% {
        transform: translateX(0) translateY(0) scale(1);
    }
    25% {
        transform: translateX(10px) translateY(-5px) scale(1.02);
    }
    50% {
        transform: translateX(-5px) translateY(10px) scale(1.01);
    }
    75% {
        transform: translateX(-10px) translateY(-5px) scale(1.02);
    }
    100% {
        transform: translateX(0) translateY(0) scale(1);
    }
}

/* Enhanced Dynamic Effects for Homepage */

/* Particle System - Avoiding Title Area */
.particles-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
}

/* Create title-safe zone by masking particles */
.particles-container::before {
    content: '';
    position: absolute;
    top: 35%;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 20%;
    background: transparent;
    z-index: 1;
    pointer-events: none;
}

.particle {
    position: absolute;
    background: var(--accent-blue);
    border-radius: 50%;
    opacity: 0.3; /* Reduced opacity to be more subtle */
    animation: particleFloat 15s infinite linear;
}

.particle:nth-child(odd) {
    background: var(--accent-orange);
    animation-duration: 18s;
    opacity: 0.2;
}

.particle:nth-child(3n) {
    background: var(--accent-blue-light);
    animation-duration: 12s;
    opacity: 0.25;
}

/* Particles avoid center area during animation */
@keyframes particleFloat {
    0% {
        transform: translateY(100vh) scale(0) rotate(0deg);
        opacity: 0;
    }
    15% {
        opacity: 0.3;
    }
    /* Fade out when approaching title area */
    40% {
        opacity: 0.1;
    }
    60% {
        opacity: 0.05;
    }
    /* Fade back in after passing title area */
    75% {
        opacity: 0.2;
    }
    90% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(-100px) scale(1) rotate(360deg);
        opacity: 0;
    }
}

/* Glowing orbs */
.glow-orb {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle, var(--accent-blue) 0%, transparent 70%);
    animation: orbFloat 8s ease-in-out infinite;
    pointer-events: none;
}

.glow-orb:nth-child(1) { animation-delay: 0s; }
.glow-orb:nth-child(2) { animation-delay: 2s; }
.glow-orb:nth-child(3) { animation-delay: 4s; }

@keyframes orbFloat {
    0%, 100% {
        transform: translateY(0) scale(1);
        opacity: 0.3;
    }
    50% {
        transform: translateY(-30px) scale(1.2);
        opacity: 0.7;
    }
}

/* Crystal Clear Hero Title - Maximum Readability */
.hero-title {
    position: relative;
    overflow: visible;
    /* Ultra clear text - no blur effects */
    text-shadow: none;
    filter: none;
    /* Enhanced font properties for clarity */
    font-weight: 900;
    letter-spacing: 2px;
    color: #ffffff;
    /* Crisp text rendering */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Clean Title - No Overlay Effects */
.hero-title::before,
.hero-title::after {
    display: none;
}

/* No Animation Effects - Static Clear Text */
.hero-title {
    animation: none;
}

@keyframes holographicMove {
    0% {
        background-position: 0 0;
        opacity: 0.3;
    }
    50% {
        opacity: 0.6;
    }
    100% {
        background-position: 20px 20px;
        opacity: 0.3;
    }
}

@keyframes scanLine {
    0% {
        top: 0%;
        opacity: 0;
    }
    15% {
        opacity: 0.7;
    }
    85% {
        opacity: 0.7;
    }
    100% {
        top: 100%;
        opacity: 0;
    }
}

@keyframes titleGlow {
    0% {
        text-shadow: 
            0 0 8px rgba(59, 130, 246, 0.4),
            0 0 16px rgba(59, 130, 246, 0.2),
            0 0 24px rgba(59, 130, 246, 0.1);
        filter: drop-shadow(0 0 15px rgba(59, 130, 246, 0.3));
    }
    100% {
        text-shadow: 
            0 0 12px rgba(0, 255, 255, 0.4),
            0 0 20px rgba(59, 130, 246, 0.3),
            0 0 28px rgba(147, 51, 234, 0.2);
        filter: drop-shadow(0 0 20px rgba(0, 255, 255, 0.3));
    }
}

@keyframes digitalGlitch {
    0%, 100% {
        transform: translateX(0);
    }
    1% {
        transform: translateX(-1px) skew(0.2deg);
    }
    2% {
        transform: translateX(1px) skew(-0.2deg);
    }
    3% {
        transform: translateX(0);
    }
    97% {
        transform: translateX(0);
    }
    98% {
        transform: translateX(-0.5px) skew(0.1deg);
        text-shadow: 
            1px 0 rgba(255, 0, 255, 0.2),
            -1px 0 rgba(0, 255, 255, 0.2),
            0 0 8px rgba(59, 130, 246, 0.4);
    }
    99% {
        transform: translateX(0.5px) skew(-0.1deg);
    }
}

/* Solid Color Text - Maximum Clarity */
.hero-title {
    background: none;
    color: #ffffff;
    position: relative;
}

@keyframes circuitFlow {
    0% {
        background-position: 0 0;
        opacity: 0.2;
    }
    50% {
        opacity: 0.4;
    }
    100% {
        background-position: 40px 40px;
        opacity: 0.2;
    }
}

/* Clean Tech Title - No Frame Distractions */
.hero-title {
    position: relative;
    display: inline-block;
    /* Enhanced text clarity */
    font-weight: 900;
    letter-spacing: 1px;
}

/* Enhanced CTA Button */
.hero-cta {
    position: relative;
    overflow: hidden;
    background: var(--gradient-accent);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    transition: all 0.3s ease;
}

.hero-cta::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transition: all 0.6s ease;
    transform: translate(-50%, -50%);
}

.hero-cta:hover::before {
    width: 300px;
    height: 300px;
}

.hero-cta:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.6);
}

/* Floating geometric shapes */
.geometric-shape {
    position: absolute;
    opacity: 0.1;
    animation: geometricFloat 20s linear infinite;
    pointer-events: none;
}

.shape-triangle {
    width: 0;
    height: 0;
    border-left: 15px solid transparent;
    border-right: 15px solid transparent;
    border-bottom: 25px solid var(--accent-blue);
}

.shape-square {
    width: 20px;
    height: 20px;
    background: var(--accent-orange);
    transform: rotate(45deg);
}

.shape-circle {
    width: 18px;
    height: 18px;
    background: var(--accent-blue-light);
    border-radius: 50%;
}

@keyframes geometricFloat {
    0% {
        transform: translateY(100vh) rotate(0deg);
    }
    100% {
        transform: translateY(-100px) rotate(360deg);
    }
}

/* Breathing effect for hero container */
.hero-container {
    animation: breathe 4s ease-in-out infinite;
}

@keyframes breathe {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.02);
    }
}

/* Gradient background animation */
.hero-overlay {
    background: var(--gradient-hero);
    animation: gradientShift 10s ease-in-out infinite;
}

@keyframes gradientShift {
    0%, 100% {
        background: var(--gradient-hero);
    }
    50% {
        background: linear-gradient(135deg, 
            rgba(30, 41, 59, 0.95) 0%, 
            rgba(59, 130, 246, 0.85) 50%, 
            rgba(147, 51, 234, 0.95) 100%);
    }
}

/* Performance optimizations for mobile devices */
@media (max-width: 768px) {
    /* Reduce particle count and animation complexity on mobile */
    .particles-container {
        display: none; /* Hide particles on mobile for better performance */
    }
    
    .geometric-shape {
        animation-duration: 30s; /* Slower animations on mobile */
    }
    
    .glow-orb {
        animation-duration: 12s;
    }
    
    /* Crystal clear title on mobile */
    .hero-title {
        font-weight: 800;
        letter-spacing: 1.5px;
        text-shadow: none;
        filter: none;
        animation: none;
        color: #ffffff;
    }
    
    .hero-title::before,
    .hero-title::after {
        display: none;
    }
    
    .hero-container {
        animation: none; /* Disable breathing effect on mobile */
    }
    
    .hero-overlay {
        animation: none; /* Disable gradient shift on mobile */
    }
}

/* Enhanced mobile responsiveness */
@media (max-width: 480px) {
    .glow-orb {
        display: none; /* Hide glowing orbs on small screens */
    }
    
    .geometric-shape {
        opacity: 0.05; /* Make shapes more subtle */
    }
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
    .particles-container,
    .glow-orb,
    .geometric-shape {
        display: none;
    }
    
    .hero-title::before,
    .hero-title::after,
    .hero-title,
    .hero-container,
    .hero-overlay,
    .animated-background {
        animation: none;
    }
    
    .hero-title {
        text-shadow: 0 0 10px rgba(59, 130, 246, 0.5);
        filter: drop-shadow(0 0 20px rgba(59, 130, 246, 0.4));
    }
    
    /* Crystal clear static title for reduced motion */
    .hero-title {
        text-shadow: none;
        filter: none;
        animation: none;
        color: #ffffff;
        font-weight: 900;
        letter-spacing: 2px;
    }
    
    .hero-title::before,
    .hero-title::after {
        display: none;
    }
    
    .hero-cta {
        transition: none;
    }
    
    .hero-cta:hover {
        transform: none;
    }
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
}

.float-element {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent-blue);
    border-radius: 50%;
    animation: floatUp 6s infinite linear;
}

.float-element:nth-child(1) {
    left: 20%;
    animation-delay: 0s;
    animation-duration: 8s;
}

.float-element:nth-child(2) {
    left: 50%;
    animation-delay: 2s;
    animation-duration: 6s;
}

.float-element:nth-child(3) {
    left: 80%;
    animation-delay: 4s;
    animation-duration: 10s;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    animation: fadeIn 1s ease-out 1s both;
}

.scroll-line {
    width: 2px;
    height: 30px;
    background: var(--gray-400);
    border-radius: var(--border-radius-full);
}

.scroll-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-blue);
    border-radius: 50%;
    animation: bounce 2s infinite;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@keyframes floatUp {
    0% {
        opacity: 0;
        transform: translateY(100vh) scale(0);
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translateY(-100px) scale(1);
    }
}

@keyframes bounce {
    0%, 20%, 53%, 80%, 100% {
        animation-timing-function: cubic-bezier(0.215, 0.610, 0.355, 1.000);
        transform: translate3d(0,0,0);
    }
    40%, 43% {
        animation-timing-function: cubic-bezier(0.755, 0.050, 0.855, 0.060);
        transform: translate3d(0, -8px, 0);
    }
    70% {
        animation-timing-function: cubic-bezier(0.755, 0.050, 0.855, 0.060);
        transform: translate3d(0, -4px, 0);
    }
    90% {
        transform: translate3d(0,-2px,0);
    }
}

/* Company Section */
.company {
    padding: var(--spacing-4xl) 0;
    background: var(--gray-900);
}

.company-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-4xl);
}

.company-card {
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.company-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.company-card:hover::before {
    transform: scaleX(1);
}

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

.card-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--spacing-lg);
    color: var(--accent-blue);
}

.card-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--primary-white);
}

.card-description {
    color: var(--gray-300);
    line-height: 1.7;
}

.stats-card {
    grid-column: span 2;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-xl);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--accent-blue);
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Timeline */
.company-timeline {
    margin-top: var(--spacing-4xl);
}

.timeline-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-3xl);
    color: var(--primary-white);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gray-700);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-3xl);
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-year {
    flex: 0 0 120px;
    text-align: center;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--accent-blue);
    background: var(--gray-800);
    border: 2px solid var(--accent-blue);
    border-radius: var(--border-radius-full);
    padding: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.timeline-content {
    flex: 1;
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    margin: 0 var(--spacing-xl);
}

.timeline-content h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-white);
    margin-bottom: var(--spacing-sm);
}

.timeline-content p {
    color: var(--gray-300);
}

/* Products Section */
.products {
    padding: var(--spacing-4xl) 0;
    background: var(--primary-black);
}

.products-showcase {
    margin-bottom: var(--spacing-4xl);
    position: relative;
}

.product-slider {
    position: relative;
    height: 600px;
    overflow: hidden;
    border-radius: var(--border-radius-2xl);
    background: var(--gray-900);
}

.product-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transform: translateX(100%);
    transition: all var(--transition-slow);
}

.product-slide.active {
    opacity: 1;
    transform: translateX(0);
}

.product-content {
    display: flex;
    align-items: center;
    height: 100%;
    padding: var(--spacing-3xl);
    gap: var(--spacing-3xl);
}

.product-info {
    flex: 1;
}

.product-name {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    background: var(--gradient-accent);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.product-tagline {
    font-size: var(--font-size-xl);
    color: var(--gray-300);
    margin-bottom: var(--spacing-lg);
}

.product-price {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--accent-orange);
    margin-bottom: var(--spacing-xl);
}

.product-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--gray-300);
    font-weight: 500;
}

.feature-item::before {
    content: '✓';
    width: 20px;
    height: 20px;
    background: var(--accent-blue);
    color: var(--primary-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    font-weight: 700;
}

.product-specs {
    display: flex;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

.spec-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.spec-label {
    font-size: var(--font-size-sm);
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.spec-value {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-white);
}

.product-image {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image img {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
    filter: drop-shadow(0 20px 40px rgba(0, 122, 255, 0.3));
}

.image-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(0, 122, 255, 0.2) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
    animation: glow 3s ease-in-out infinite alternate;
}

@keyframes glow {
    from {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.5;
    }
    to {
        transform: translate(-50%, -50%) scale(1.1);
        opacity: 0.8;
    }
}

.product-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.product-nav {
    width: 50px;
    height: 50px;
    background: var(--gray-800);
    border: 1px solid var(--gray-600);
    border-radius: 50%;
    color: var(--primary-white);
    font-size: var(--font-size-xl);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-nav:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    transform: scale(1.1);
}

.product-dots {
    display: flex;
    gap: var(--spacing-md);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--gray-600);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

.dot.active {
    background: var(--accent-blue);
    transform: scale(1.2);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-2xl);
}

.product-card {
    background: var(--gray-900);
    border: 1px solid var(--gray-700);
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-blue);
}

.card-image {
    height: 250px;
    background: var(--gray-800);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    position: relative;
    overflow: hidden;
}

.card-image img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    transition: transform var(--transition-base);
}

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

.card-content {
    padding: var(--spacing-xl);
}

.card-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-white);
    margin-bottom: var(--spacing-sm);
}

.card-subtitle {
    color: var(--gray-400);
    margin-bottom: var(--spacing-lg);
}

.card-price {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--accent-orange);
}

/* Purchase Section */
.purchase {
    padding: var(--spacing-4xl) 0;
    background: var(--gray-900);
}

.purchase-channels {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-4xl);
}

.channel-card {
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.channel-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent);
    transition: left var(--transition-slow);
}

.channel-card:hover::before {
    left: 100%;
}

.channel-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-blue);
}

.channel-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    color: var(--accent-blue);
}

.channel-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary-white);
    margin-bottom: var(--spacing-md);
}

.channel-description {
    color: var(--gray-300);
    margin-bottom: var(--spacing-xl);
    line-height: 1.6;
}

.channel-link {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--gradient-accent);
    color: var(--primary-white);
    text-decoration: none;
    border-radius: var(--border-radius-full);
    font-weight: 600;
    transition: all var(--transition-base);
}

.channel-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.global-availability {
    position: relative;
}

.availability-map {
    position: relative;
    border-radius: var(--border-radius-xl);
    overflow: hidden;
    height: 400px;
}

.availability-map img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.map-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
}

.map-point {
    position: absolute;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.point-marker {
    position: relative;
    width: 20px;
    height: 20px;
    background: var(--accent-blue);
    border-radius: 50%;
    box-shadow: 0 0 20px rgba(0, 122, 255, 0.6);
}

.point-pulse {
    position: absolute;
    top: -5px;
    left: -5px;
    width: 30px;
    height: 30px;
    border: 2px solid var(--accent-blue);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.point-label {
    color: var(--primary-white);
    font-size: var(--font-size-sm);
    font-weight: 600;
    background: rgba(0, 0, 0, 0.8);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-base);
    white-space: nowrap;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

.availability-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.stat-card {
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-3px);
    border-color: var(--accent-blue);
}

.stat-card .stat-number {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--accent-blue);
    margin-bottom: var(--spacing-sm);
}

.stat-card .stat-description {
    color: var(--gray-300);
    font-weight: 500;
}

/* Contact Section */
.contact {
    padding: var(--spacing-4xl) 0;
    background: var(--primary-black);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4xl);
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

.info-item {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-start;
}

.info-icon {
    flex: 0 0 48px;
    height: 48px;
    background: var(--gradient-accent);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-white);
}

.info-content h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-white);
    margin-bottom: var(--spacing-sm);
}

.info-content p {
    color: var(--gray-300);
}

.contact-form {
    background: var(--gray-900);
    border: 1px solid var(--gray-700);
    border-radius: var(--border-radius-xl);
    padding: var(--spacing-2xl);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--gray-800);
    border: 1px solid var(--gray-600);
    border-radius: var(--border-radius-base);
    color: var(--primary-white);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--gray-400);
}

.submit-btn {
    width: 100%;
    padding: var(--spacing-lg);
    background: var(--gradient-accent);
    color: var(--primary-white);
    border: none;
    border-radius: var(--border-radius-base);
    font-size: var(--font-size-lg);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

/* Footer */
.footer {
    background: var(--gray-900);
    border-top: 1px solid var(--gray-800);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: var(--spacing-3xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-brand .logo-circles {
    justify-content: flex-start;
}

.brand-slogan {
    color: var(--gray-400);
    font-style: italic;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
}

.link-group h4 {
    color: var(--primary-white);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.link-group a {
    display: block;
    color: var(--gray-400);
    text-decoration: none;
    margin-bottom: var(--spacing-sm);
    transition: color var(--transition-base);
}

.link-group a:hover {
    color: var(--accent-blue);
}

.footer-social h4 {
    color: var(--primary-white);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    border-radius: var(--border-radius-base);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    transition: all var(--transition-base);
}

.social-link:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    color: var(--primary-white);
    transform: translateY(-2px);
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--gray-800);
    text-align: center;
}

.copyright {
    color: var(--gray-500);
    font-size: var(--font-size-sm);
}

/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 50px;
    height: 50px;
    background: var(--gradient-accent);
    border: none;
    border-radius: 50%;
    color: var(--primary-white);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-base);
    z-index: 1000;
}

.scroll-to-top.show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.scroll-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .stats-card {
        grid-column: span 1;
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        flex-direction: row !important;
        padding-left: 60px;
    }
    
    .timeline-year {
        position: absolute;
        left: 0;
        flex: none;
        width: 60px;
        height: 60px;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: var(--font-size-sm);
        padding: 0;
    }
    
    .timeline-content {
        margin: 0;
        margin-left: var(--spacing-xl);
    }
    
    .product-content {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background: var(--gray-900);
        border-top: 1px solid var(--gray-800);
        flex-direction: column;
        padding: var(--spacing-xl);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }
    
    .nav-menu.show {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .section-title {
        font-size: var(--font-size-3xl);
    }
    
    .company-grid {
        grid-template-columns: 1fr;
    }
    
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .purchase-channels {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .availability-stats {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .product-content {
        padding: var(--spacing-xl);
    }
    
    .product-name {
        font-size: var(--font-size-2xl);
    }
    
    .product-features {
        grid-template-columns: 1fr;
    }
    
    .product-specs {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

/* Animation Classes */
.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.slide-in-left {
    animation: slideInLeft 0.6s ease-out;
}

.slide-in-right {
    animation: slideInRight 0.6s ease-out;
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Audio Player Styles */
.audio-interface {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--gray-800);
    border: 1px solid var(--gray-700);
    border-radius: var(--border-radius-lg);
    transition: all var(--transition-base);
}

.audio-interface:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 0 20px rgba(0, 122, 255, 0.2);
}

.audio-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--primary-white);
    margin-bottom: var(--spacing-md);
}

.audio-icon {
    font-size: var(--font-size-xl);
}

.audio-player {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.audio-btn {
    width: 48px;
    height: 48px;
    background: var(--gradient-accent);
    border: none;
    border-radius: 50%;
    color: var(--primary-white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-lg);
    transition: all var(--transition-base);
    position: relative;
}

.audio-btn:hover {
    transform: scale(1.05);
    box-shadow: var(--shadow-glow);
}

.audio-btn .pause-icon {
    display: none;
}

.audio-btn.playing .play-icon {
    display: none;
}

.audio-btn.playing .pause-icon {
    display: inline;
}

.audio-progress-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.audio-progress-bar {
    height: 6px;
    background: var(--gray-600);
    border-radius: var(--border-radius-full);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.audio-progress-fill {
    height: 100%;
    background: var(--gradient-accent);
    border-radius: var(--border-radius-full);
    width: 0%;
    transition: width 0.1s ease;
}

.audio-time {
    display: flex;
    justify-content: space-between;
    font-size: var(--font-size-xs);
    color: var(--gray-400);
}

.audio-volume {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.volume-btn {
    background: transparent;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    font-size: var(--font-size-lg);
    transition: color var(--transition-base);
}

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

.volume-slider {
    width: 80px;
    height: 4px;
    background: var(--gray-600);
    border-radius: var(--border-radius-full);
    outline: none;
    cursor: pointer;
}

.volume-slider::-webkit-slider-thumb {
    appearance: none;
    width: 16px;
    height: 16px;
    background: var(--accent-blue);
    border-radius: 50%;
    cursor: pointer;
}

.volume-slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: var(--accent-blue);
    border-radius: 50%;
    cursor: pointer;
    border: none;
}

.audio-quick-play {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--gray-800);
    border: 1px solid var(--gray-600);
    border-radius: var(--border-radius-base);
    color: var(--gray-300);
    cursor: pointer;
    transition: all var(--transition-base);
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
}

.audio-quick-play:hover {
    border-color: var(--accent-blue);
    color: var(--primary-white);
    background: rgba(0, 122, 255, 0.1);
}

/* Video Player Styles */
.video-interface {
    position: absolute;
    bottom: var(--spacing-lg);
    left: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 10;
}

.video-toggle {
    display: flex;
    background: var(--gray-900);
    border: 1px solid var(--gray-700);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    margin-bottom: var(--spacing-md);
}

.video-tab-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--gray-400);
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: var(--font-size-sm);
}

.video-tab-btn.active,
.video-tab-btn:hover {
    background: var(--accent-blue);
    color: var(--primary-white);
}

.tab-icon {
    font-size: var(--font-size-lg);
}

.video-container {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    background: var(--primary-black);
}

.product-video {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
}

.video-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.video-container:hover .video-controls {
    opacity: 1;
}

.video-play-pause {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border: none;
    border-radius: 50%;
    color: var(--primary-white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
}

.video-play-pause:hover {
    background: var(--accent-blue);
}

.video-play-pause .pause-icon {
    display: none;
}

.video-play-pause.playing .play-icon {
    display: none;
}

.video-play-pause.playing .pause-icon {
    display: inline;
}

.video-progress {
    flex: 1;
}

.video-progress-bar {
    height: 4px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: var(--border-radius-full);
    cursor: pointer;
    position: relative;
}

.video-progress-fill {
    height: 100%;
    background: var(--accent-blue);
    border-radius: var(--border-radius-full);
    width: 0%;
    transition: width 0.1s ease;
}

.video-mute,
.video-fullscreen {
    background: transparent;
    border: none;
    color: var(--primary-white);
    cursor: pointer;
    font-size: var(--font-size-lg);
    padding: var(--spacing-sm);
    transition: color var(--transition-base);
}

.video-mute:hover,
.video-fullscreen:hover {
    color: var(--accent-blue);
}

.video-mute .unmute-icon {
    display: none;
}

.video-mute.muted .mute-icon {
    display: none;
}

.video-mute.muted .unmute-icon {
    display: inline;
}

/* Enhanced Product Card with Media Features */
.product-card .card-content {
    position: relative;
}

.product-card .audio-quick-play {
    width: 100%;
    justify-content: center;
}

/* Media Controls Enhancement */
@media (max-width: 768px) {
    .audio-player {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .audio-progress-container {
        width: 100%;
    }
    
    .audio-volume {
        justify-content: center;
    }
    
    .video-interface {
        bottom: var(--spacing-sm);
        left: var(--spacing-sm);
        right: var(--spacing-sm);
    }
    
    .video-tab-btn {
        font-size: var(--font-size-xs);
        padding: var(--spacing-sm);
    }
    
    .product-video {
        height: 200px;
    }
}

/* Loading States for Media */
.audio-loading,
.video-loading {
    position: relative;
    overflow: hidden;
}

.audio-loading::after,
.video-loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

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

.hidden { display: none; }
.visible { display: block; }

.no-scroll { overflow: hidden; }