/* Material 3 Design Tokens - Dark Mode */
:root {
    /* Primary Colors */
    --md-sys-color-primary: #D0BCFF;
    --md-sys-color-on-primary: #381E72;
    --md-sys-color-primary-container: #4F378B;
    --md-sys-color-on-primary-container: #EADDFF;
    
    /* Secondary Colors */
    --md-sys-color-secondary: #CCC2DC;
    --md-sys-color-on-secondary: #332D41;
    --md-sys-color-secondary-container: #4A4458;
    --md-sys-color-on-secondary-container: #E8DEF8;
    
    /* Tertiary Colors */
    --md-sys-color-tertiary: #EFB8C8;
    --md-sys-color-on-tertiary: #492532;
    --md-sys-color-tertiary-container: #633B48;
    --md-sys-color-on-tertiary-container: #FFD8E4;
    
    /* Error Colors */
    --md-sys-color-error: #F2B8B5;
    --md-sys-color-on-error: #601410;
    --md-sys-color-error-container: #8C1D18;
    --md-sys-color-on-error-container: #F9DEDC;
    
    /* Surface Colors */
    --md-sys-color-surface: #1C1B1F;
    --md-sys-color-on-surface: #E6E1E5;
    --md-sys-color-surface-variant: #49454F;
    --md-sys-color-on-surface-variant: #CAC4D0;
    --md-sys-color-surface-dim: #141218;
    --md-sys-color-surface-bright: #232127;
    
    /* Outline */
    --md-sys-color-outline: #938F99;
    --md-sys-color-outline-variant: #49454F;
    
    /* Background */
    --md-sys-color-background: #1C1B1F;
    --md-sys-color-on-background: #E6E1E5;
    
    /* Elevation */
    --md-sys-elevation-level0: 0px;
    --md-sys-elevation-level1: 1px;
    --md-sys-elevation-level2: 3px;
    --md-sys-elevation-level3: 6px;
    --md-sys-elevation-level4: 8px;
    --md-sys-elevation-level5: 12px;
    
    /* Shadows */
    --md-sys-shadow-level1: 0px 1px 2px 0px rgba(0, 0, 0, 0.3), 0px 1px 3px 1px rgba(0, 0, 0, 0.15);
    --md-sys-shadow-level2: 0px 1px 2px 0px rgba(0, 0, 0, 0.3), 0px 2px 6px 2px rgba(0, 0, 0, 0.15);
    --md-sys-shadow-level3: 0px 1px 3px 0px rgba(0, 0, 0, 0.3), 0px 4px 8px 3px rgba(0, 0, 0, 0.15);
    --md-sys-shadow-level4: 0px 2px 3px 0px rgba(0, 0, 0, 0.3), 0px 6px 10px 4px rgba(0, 0, 0, 0.15);
    --md-sys-shadow-level5: 0px 4px 4px 0px rgba(0, 0, 0, 0.3), 0px 8px 12px 6px rgba(0, 0, 0, 0.15);
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-bg-elevated: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-blur: blur(20px);
    --glass-blur-strong: blur(40px);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #D0BCFF 0%, #4F378B 50%, #381E72 100%);
    --gradient-secondary: linear-gradient(135deg, #CCC2DC 0%, #4A4458 100%);
    --gradient-accent: linear-gradient(135deg, #EFB8C8 0%, #633B48 100%);
    --gradient-orb-1: radial-gradient(circle at 30% 30%, rgba(208, 188, 255, 0.3) 0%, transparent 50%);
    --gradient-orb-2: radial-gradient(circle at 70% 70%, rgba(204, 194, 220, 0.25) 0%, transparent 50%);
    --gradient-orb-3: radial-gradient(circle at 50% 50%, rgba(239, 184, 200, 0.2) 0%, transparent 50%);
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-family-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
    
    /* 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;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 400ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    color: var(--md-sys-color-on-surface);
    background: var(--md-sys-color-background);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: var(--md-sys-color-surface-dim);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    border: 2px solid var(--md-sys-color-surface-dim);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--md-sys-color-primary);
}

/* WebGL Shader Canvas */
.shader-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    opacity: 0.6;
    pointer-events: none;
}

/* Animated Background with Gradient Orbs (morphs with scroll) */
.animated-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    background: var(--md-sys-color-background);
    transition: filter 0.3s ease, opacity 0.3s ease;
}

/* Cursor Trail */
.cursor-trail {
    position: fixed;
    pointer-events: none;
    z-index: 9999;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(208, 188, 255, 0.4) 0%, rgba(208, 188, 255, 0) 70%);
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.3s ease;
    mix-blend-mode: screen;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.6;
    animation: float-orb 20s ease-in-out infinite;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--gradient-orb-1);
    top: -200px;
    left: -200px;
    animation-duration: 25s;
    transition: transform 0.3s ease-out, filter 0.3s ease-out;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: var(--gradient-orb-2);
    bottom: -150px;
    right: -150px;
    animation-duration: 30s;
    animation-delay: -5s;
    transition: transform 0.3s ease-out, filter 0.3s ease-out;
}

.orb-3 {
    width: 400px;
    height: 400px;
    background: var(--gradient-orb-3);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-duration: 35s;
    animation-delay: -10s;
    transition: transform 0.3s ease-out, filter 0.3s ease-out;
}

@keyframes float-orb {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(50px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-30px, 30px) scale(0.9);
    }
}

/* Glassmorphism Surface Styles */
.glass-surface {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
}

.glass-surface-elevated {
    background: var(--glass-bg-elevated);
    backdrop-filter: var(--glass-blur-strong);
    -webkit-backdrop-filter: var(--glass-blur-strong);
    border: 1px solid var(--glass-border);
    box-shadow: var(--md-sys-shadow-level2);
}

/* Navigation */
.nav {
    position: fixed;
    top: var(--spacing-md);
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 2rem);
    max-width: 1400px;
    z-index: 1000;
    border-radius: var(--radius-xl);
    padding: var(--spacing-md);
    transition: all var(--transition-base);
}

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

.nav-timer {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--md-sys-color-on-primary-container);
    background: var(--gradient-primary);
    box-shadow: var(--md-sys-shadow-level2);
    transition: transform var(--transition-fast);
}

.nav-timer:hover {
    transform: scale(1.05);
}

.nav-timer-text {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.nav-links {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    margin-left: auto;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--md-sys-color-on-surface);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.9375rem;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.nav-link::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--md-sys-color-primary-container);
    opacity: 0;
    transition: opacity var(--transition-fast);
    border-radius: var(--radius-md);
}

.nav-link:hover::before {
    opacity: 0.1;
}

.nav-link:hover {
    color: var(--md-sys-color-primary);
    transform: translateY(-2px);
}

.nav-link:active {
    transform: translateY(0) scale(0.98);
}

.nav-link i {
    font-size: 1rem;
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: calc(100px + var(--spacing-xl)) var(--spacing-xl) var(--spacing-2xl);
}

/* Hero Section */
.hero {
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl) 0;
    position: relative;
}

.hero-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-2xl);
    width: 100%;
    align-items: center;
}

.logo-section {
    text-align: center;
}

.logo-container {
    position: relative;
    display: inline-block;
    margin-bottom: var(--spacing-xl);
}

.logo-glow {
    position: absolute;
    inset: -30px;
    background: var(--gradient-primary);
    border-radius: 50%;
    filter: blur(40px);
    opacity: 0.4;
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.1);
    }
}

.logo {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
}

.logo-image {
    width: 85%;
    height: 85%;
    object-fit: contain;
    transition: transform var(--transition-slow);
    filter: drop-shadow(0 4px 12px rgba(208, 188, 255, 0.3));
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5.5rem);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
}

.title-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
    animation: gradient-shift 5s ease infinite;
    background-size: 200% 200%;
}

@keyframes gradient-shift {
    0%, 100% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
}

.hero-subtitle {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 500;
    color: var(--md-sys-color-on-surface-variant);
    margin-bottom: var(--spacing-lg);
    animation: fade-in-up 1s ease-out 0.3s both;
}

.animated-title {
    position: relative;
    display: inline-block;
}

.animated-title::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    animation: expand-line 1s ease-out 0.8s forwards;
    transform-origin: left;
}

@keyframes expand-line {
    to {
        transform: scaleX(1);
    }
}

.tagline {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.6;
    max-width: 500px;
    margin: 0 auto;
    animation: fade-in-up 1s ease-out 0.6s both;
}

.version-tagline {
    font-size: 1.1rem;
    color: var(--md-sys-color-secondary);
    margin-bottom: var(--spacing-lg);
}

.hero-card {
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    animation: fade-in-up 1s ease-out 0.9s both;
}

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Content Cards */
.content-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
    margin-top: var(--spacing-3xl);
}

.content-card {
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.content-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.content-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--md-sys-shadow-level4);
}

.content-card:hover::before {
    opacity: 0.05;
}

.content-card.full-span {
    grid-column: 1 / -1;
}

.card-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.card-header i {
    font-size: 1.5rem;
    color: var(--md-sys-color-primary);
}

.card-header h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    color: var(--md-sys-color-on-surface);
    margin: 0;
}

.card-content {
    color: var(--md-sys-color-on-surface-variant);
    line-height: 1.8;
}

.card-content p {
    margin-bottom: var(--spacing-md);
}

.mt-2 {
    margin-top: var(--spacing-md);
}

.mt-3 {
    margin-top: var(--spacing-lg);
}

.highlight-text {
    color: var(--md-sys-color-primary);
    font-weight: 600;
}

/* Changelog */
.changelog-intro {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(208, 188, 255, 0.08);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--md-sys-color-primary);
    line-height: 1.8;
    color: var(--md-sys-color-on-surface-variant);
    font-style: italic;
}

.changelog {
    max-height: 600px;
    overflow-y: auto;
    padding-right: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.changelog::-webkit-scrollbar {
    width: 6px;
}

.changelog::-webkit-scrollbar-track {
    background: transparent;
}

.changelog::-webkit-scrollbar-thumb {
    background: var(--md-sys-color-outline-variant);
    border-radius: var(--radius-full);
}

.changelog::-webkit-scrollbar-thumb:hover {
    background: var(--md-sys-color-outline);
}

.changelog-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    background: rgba(208, 188, 255, 0.05);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--md-sys-color-primary);
    transition: all var(--transition-fast);
    animation: slide-in-left 0.4s ease-out both;
}

.changelog-item:nth-child(1) { animation-delay: 0.1s; }
.changelog-item:nth-child(2) { animation-delay: 0.15s; }
.changelog-item:nth-child(3) { animation-delay: 0.2s; }
.changelog-item:nth-child(4) { animation-delay: 0.25s; }
.changelog-item:nth-child(5) { animation-delay: 0.3s; }
.changelog-item:nth-child(n+6) { animation-delay: 0.35s; }

@keyframes slide-in-left {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.changelog-item:hover {
    background: rgba(208, 188, 255, 0.1);
    transform: translateX(4px);
    border-left-color: var(--md-sys-color-primary);
    border-left-width: 4px;
}

.changelog-item i {
    color: var(--md-sys-color-primary);
    margin-top: 2px;
    flex-shrink: 0;
}

.changelog-item span {
    flex: 1;
    line-height: 1.7;
}

.changelog-item span strong {
    color: var(--md-sys-color-primary);
    font-weight: 600;
}

.changelog-section {
    margin-bottom: var(--spacing-xl);
}

.changelog-section:last-child {
    margin-bottom: 0;
}

.changelog-section-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--md-sys-color-primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid rgba(208, 188, 255, 0.2);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.changelog-section-title::before {
    content: '';
    width: 4px;
    height: 1.25rem;
    background: var(--gradient-primary);
    border-radius: var(--radius-sm);
}

/* Video Wrapper */
.video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-md);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
    border-radius: var(--radius-lg);
}

/* Scroll Indicator */
.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);
    opacity: 1;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.scroll-arrow {
    width: 24px;
    height: 24px;
    border-right: 3px solid var(--md-sys-color-primary);
    border-bottom: 3px solid var(--md-sys-color-primary);
    transform: rotate(45deg);
}

.scroll-text {
    font-size: 0.75rem;
    color: var(--md-sys-color-on-surface-variant);
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: 600;
}

/* Footer */
footer {
    margin-top: var(--spacing-3xl);
    padding: var(--spacing-2xl);
    text-align: center;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

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

footer a:hover {
    color: var(--md-sys-color-on-primary-container);
    text-decoration: underline;
}

.license-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-left: var(--spacing-xs);
}

.license-badge {
    height: 22px;
    vertical-align: text-bottom;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.license-link:hover .license-badge {
    opacity: 1;
}

/* Ripple Effect */
.ripple {
    position: absolute;
    border-radius: 50%;
    background: rgba(208, 188, 255, 0.3);
    transform: scale(0);
    animation: ripple-animation 0.6s ease-out;
    pointer-events: none;
}

@keyframes ripple-animation {
    to {
        transform: scale(4);
        opacity: 0;
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .content-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav {
        top: var(--spacing-sm);
        width: calc(100% - 1rem);
        padding: var(--spacing-sm);
    }
    
    .nav-container {
        flex-direction: column;
        align-items: stretch;
    }
    
    .nav-timer {
        align-self: center;
    }
    
    .nav-links {
        margin-left: 0;
        justify-content: center;
    }
    
    .nav-link span {
        display: none;
    }
    
    .container {
        padding: calc(80px + var(--spacing-lg)) var(--spacing-md) var(--spacing-xl);
    }
    
    .hero {
        min-height: auto;
        padding: var(--spacing-xl) 0;
    }
    
    .logo {
        width: 150px;
        height: 150px;
    }
    
    .content-card {
        padding: var(--spacing-lg);
    }
    
    .card-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .nav-link {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .logo {
        width: 120px;
        height: 120px;
    }
    
    .content-card {
        padding: var(--spacing-md);
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print Styles */
@media print {
    .nav,
    .scroll-indicator,
    .animated-bg {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}