:root {
    /* Colors */
    --primary: #0071e3;
    --primary-hover: #0077ed;
    --background: #000000;
    --text: #f5f5f7;
    --text-secondary: #86868b;
    --card-bg: #151515;
    --card-border: #2d2d2d;
    --gradient-start: #000000;
    --gradient-end: #1a1a1a;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 3rem;
    --font-size-4xl: 4rem;

    /* Animations */
    --transition-fast: 0.15s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    line-height: 1.5;
    color: var(--text);
    background: linear-gradient(to bottom, var(--gradient-start), var(--gradient-end));
    background-attachment: fixed;
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

h1 {
    font-size: var(--font-size-3xl);
}

h2 {
    font-size: var(--font-size-2xl);
}

h3 {
    font-size: var(--font-size-xl);
}

p {
    margin-bottom: var(--space-md);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    padding: var(--space-sm) 0;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.logo img {
    height: 32px;
    width: auto;
}

.logo h1 {
    font-size: var(--font-size-lg);
}

nav ul {
    display: flex;
    gap: var(--space-md);
    list-style: none;
}

nav a {
    color: var(--text);
    font-weight: 500;
}

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

.download-nav-button {
    background-color: var(--primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 500;
}

.download-nav-button:hover {
    background-color: var(--primary-hover);
    color: white;
}

/* Hero Section */
.hero {
    padding: var(--space-xl) 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
    align-items: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.hero-content h1 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    background: linear-gradient(90deg, #fff, #ccc);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: var(--space-sm);
}

.hero-content p {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    font-weight: 400;
    max-width: 500px;
}

.cta-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    margin-top: var(--space-md);
}

.cta-button {
    display: inline-block;
    background-color: var(--primary);
    color: white;
    font-size: var(--font-size-lg);
    font-weight: 600;
    padding: 12px 32px;
    border-radius: 30px;
    text-align: center;
    transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.cta-button:hover {
    background-color: var(--primary-hover);
    transform: scale(1.05);
    color: white;
}

.version {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.hero-image {
    max-width: 100%;
    transform: perspective(1000px) rotateX(5deg) rotateY(-5deg);
    transition: transform var(--transition-medium);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    border-radius: 8px;
    overflow: hidden;
}

.hero-image:hover {
    transform: perspective(1000px) rotateX(0) rotateY(0);
}

.hero-image img {
    width: 100%;
    height: auto;
    display: block;
}

/* Section Styles */
section {
    padding: var(--space-xl) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-lg);
    font-weight: 700;
    background: linear-gradient(90deg, #fff, #ccc);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* Video Section */
.video-section {
    background-color: rgba(10, 10, 10, 0.5);
    padding: var(--space-xl) 0;
}

.video-container {
    max-width: 1000px;
    margin: 0 auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
    border-radius: 12px;
    overflow: hidden;
    transform: perspective(1000px);
    transition: transform var(--transition-medium);
}

.video-container:hover {
    transform: perspective(1000px) scale(1.02);
}

video {
    width: 100%;
    height: auto;
    display: block;
}

/* Features Section */
.features-section {
    background: linear-gradient(to bottom, rgba(10, 10, 10, 0.5), rgba(0, 0, 0, 0.5));
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md);
}

.feature-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: var(--space-md);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.feature-card h3 {
    margin-bottom: var(--space-sm);
    font-weight: 600;
}

.feature-card p {
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* Download Section */
.download-section {
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.5), rgba(10, 10, 10, 0.5));
}

.download-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.download-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-md);
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    transition: transform var(--transition-medium), box-shadow var(--transition-medium), background-color var(--transition-medium);
    color: var(--text);
    text-align: center;
}

.download-option:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    background-color: var(--primary);
    color: white;
}

.download-option:hover p {
    color: rgba(255, 255, 255, 0.8);
}

.download-option img {
    width: 64px;
    height: 64px;
    margin-bottom: var(--space-sm);
}

.download-option h3 {
    margin-bottom: var(--space-xs);
}

.download-option p {
    color: var(--text-secondary);
    margin-bottom: 0;
    transition: color var(--transition-medium);
}

.all-releases {
    text-align: center;
    margin-top: var(--space-lg);
}

.all-releases a {
    color: var(--text-secondary);
    text-decoration: underline;
    font-size: var(--font-size-sm);
}

/* Footer */
footer {
    background-color: #111;
    padding: var(--space-md) 0;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

footer .links {
    display: flex;
    gap: var(--space-md);
}

/* Parallax Effect */
.parallax-element {
    transition: transform var(--transition-slow);
}

/* Responsive Styles */
@media (max-width: 1024px) {
    :root {
        --font-size-4xl: 3rem;
    }
    
    .hero .container {
        grid-template-columns: 1fr;
    }
    
    .hero-image {
        order: -1;
        margin-bottom: var(--space-lg);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-4xl: 2.5rem;
        --font-size-3xl: 2rem;
        --font-size-2xl: 1.75rem;
    }
    
    .hero-content p {
        font-size: var(--font-size-lg);
    }
    
    nav ul {
        gap: var(--space-sm);
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
        --font-size-2xl: 1.5rem;
    }
    
    header .container {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .hero {
        padding-top: calc(var(--space-xl) + 60px);
    }
    
    footer .container {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
    
    footer .links {
        justify-content: center;
    }
}

/* Fade-in animation */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}