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

/* Performance Optimizations */
html {
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

/* Touch Device Optimizations */
button, .concept-card, .nav-link, .footer-link {
    -webkit-tap-highlight-color: rgba(0, 212, 255, 0.2);
    touch-action: manipulation;
}

/* Prevent zoom on inputs for iOS */
input, select, textarea {
    font-size: 16px;
}

@media (max-width: 768px) {
    input, select, textarea {
        font-size: 16px;
    }
}

:root {
    /* NASA Blue Color Palette */
    --primary-bg: #0B1426;
    --secondary-bg: #1A2332;
    --accent-blue: #3A7BD5;
    --light-blue: #6BB6FF;
    --electric-blue: #00D4FF;
    --text-primary: #E8F4FD;
    --text-secondary: #B8D4F0;
    --text-muted: #7A95B0;
    --border-color: #2D3B4F;
    --glow-blue: #00D4FF;
    
    /* Typography */
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.8s ease;
}

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

/* Splash Screen */
.splash-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--primary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.splash-screen.fade-out {
    opacity: 0;
    visibility: hidden;
}

.data-stream-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--primary-bg);
    padding: 20px;
    font-family: var(--font-mono);
    font-size: 14px;
    line-height: 1.4;
    color: var(--light-blue);
    z-index: 10;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.typing-line {
    margin: 0;
    padding: 0;
    white-space: nowrap;
    color: var(--light-blue);
    opacity: 0.9;
    overflow: hidden;
    width: 0;
    animation: expandLine 0.3s ease-out forwards;
}

.typing-line.expanding {
    animation: expandLineFast 0.1s ease-out forwards;
}

@keyframes expandLine {
    0% { width: 0; }
    100% { width: calc(100vw - 40px); }
}

@keyframes expandLineFast {
    0% { width: 0; }
    100% { width: calc(100vw - 40px); }
}

.typing-cursor {
    display: inline-block;
    width: 10px;
    height: 16px;
    background: var(--light-blue);
    margin-left: 2px;
    animation: cursorBlink 0.6s infinite;
    vertical-align: text-bottom;
}

@keyframes cursorBlink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.splash-content {
    text-align: center;
    z-index: 5;
}

.main-title {
    font-size: clamp(3rem, 8vw, 8rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.subtitle {
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    font-weight: 300;
}

.loading-bar {
    width: 300px;
    height: 2px;
    background: var(--border-color);
    margin: 0 auto;
    border-radius: 1px;
    overflow: hidden;
}

.loading-progress {
    width: 0;
    height: 100%;
    background: linear-gradient(90deg, var(--accent-blue), var(--electric-blue));
    animation: loadingProgress 3s ease-in-out forwards;
    box-shadow: 0 0 20px var(--electric-blue);
}

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

/* Glitch Effect */
.glitch {
    position: relative;
    color: var(--text-primary);
    animation: glitch 2s linear infinite;
}

.glitch::before,
.glitch::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.glitch::before {
    animation: glitchTop 1s linear infinite;
    clip-path: polygon(0 0, 100% 0, 100% 33%, 0 33%);
    color: var(--electric-blue);
}

.glitch::after {
    animation: glitchBottom 1.5s linear infinite;
    clip-path: polygon(0 67%, 100% 67%, 100% 100%, 0 100%);
    color: var(--light-blue);
}

@keyframes glitch {
    2%, 64% { transform: translate(2px, 0) skew(0deg); }
    4%, 60% { transform: translate(-2px, 0) skew(0deg); }
    62% { transform: translate(0, 0) skew(5deg); }
}

@keyframes glitchTop {
    2%, 64% { transform: translate(2px, -2px); }
    4%, 60% { transform: translate(-2px, 2px); }
    62% { transform: translate(13px, -1px) skew(-13deg); }
}

@keyframes glitchBottom {
    2%, 64% { transform: translate(-2px, 0); }
    4%, 60% { transform: translate(-2px, 0); }
    62% { transform: translate(-22px, 5px) skew(21deg); }
}

/* Main Content */
.main-content {
    transition: opacity var(--transition-slow);
}

.main-content.hidden {
    opacity: 0;
    pointer-events: none;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(11, 20, 38, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: nowrap;
    width: 100%;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--electric-blue);
    text-decoration: none;
    white-space: nowrap;
    flex-shrink: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 400;
    transition: color var(--transition-fast);
    position: relative;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-link:hover {
    color: var(--electric-blue);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--electric-blue);
    transition: width var(--transition-fast);
}

.nav-link:hover::after {
    width: 100%;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-sm);
    z-index: 1001;
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: background-color var(--transition-fast);
}

.mobile-menu-btn:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.mobile-menu-btn svg {
    width: 24px;
    height: 24px;
}

/* Mobile Home Button - Hidden by default */
.mobile-home-button {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: rgba(11, 20, 38, 0.95);
    backdrop-filter: blur(10px);
    padding: 8px var(--spacing-md);
    z-index: 999;
    transform: translateY(0);
    transition: transform 0.3s ease;
}

/* Hide button when scrolling down */
.mobile-home-button.hidden {
    transform: translateY(-100%);
}

/* Ensure mobile home button is NEVER shown on desktop */
@media (min-width: 769px) {
    .mobile-home-button {
        display: none !important;
        visibility: hidden !important;
    }

    /* Reset whitepaper main content padding on desktop */
    .whitepaper-main {
        padding-top: 0 !important;
    }
}

.home-btn {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--electric-blue);
    text-decoration: none;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 500;
    padding: 3px 6px;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid var(--electric-blue);
    border-radius: 4px;
    transition: all var(--transition-fast);
    max-width: 70px;
}

.home-btn:hover {
    background: var(--electric-blue);
    color: var(--primary-bg);
    transform: translateY(-1px);
}

.home-btn svg {
    width: 12px;
    height: 12px;
}

/* Mobile Sidebar */
.mobile-sidebar {
    position: fixed;
    top: 0;
    right: -300px;
    width: 300px;
    height: 100vh;
    background: rgba(11, 20, 38, 0.98);
    backdrop-filter: blur(20px);
    border-left: 1px solid var(--border-color);
    z-index: 1000;
    transition: right 0.3s ease;
    padding: var(--spacing-xl) var(--spacing-lg);
    overflow-y: auto;
}

.mobile-sidebar.open {
    right: 0;
}

.mobile-sidebar .sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.mobile-sidebar .close-btn {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.mobile-sidebar .sidebar-menu {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    list-style: none;
}

.mobile-sidebar .sidebar-menu .nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-size: 1.1rem;
    padding: var(--spacing-md);
    border-radius: 8px;
    border: 1px solid transparent;
}

.mobile-sidebar .sidebar-menu .nav-link.active {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--electric-blue);
    color: var(--electric-blue);
}

/* Mobile Overlay */
.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

.mobile-overlay.open {
    opacity: 1;
    visibility: visible;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary-bg) 0%, var(--secondary-bg) 100%);
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--text-primary), var(--electric-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.cta-button {
    padding: var(--spacing-md) var(--spacing-xl);
    border: none;
    border-radius: 8px;
    font-family: var(--font-mono);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    min-width: 160px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
}

.cta-button.primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--electric-blue));
    color: var(--text-primary);
    box-shadow: 0 4px 15px rgba(0, 212, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.cta-button.primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: flowAnimation 2s ease-in-out infinite;
    z-index: 1;
}

.cta-button.primary:hover {
    transform: translateY(-2px);
}

.cta-button.primary:hover::before {
    animation-play-state: paused;
}


@keyframes flowAnimation {
    0% { left: -100%; }
    50% { left: 100%; }
    100% { left: -100%; }
}

.cta-button.secondary {
    background: transparent;
    color: var(--electric-blue);
    border: 2px solid var(--electric-blue);
}

.cta-button.secondary:hover {
    background: var(--electric-blue);
    color: var(--primary-bg);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.2);
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

/* Concept Cards */
.concept-card {
    background: rgba(26, 35, 50, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-medium);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.concept-card::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--accent-blue), var(--electric-blue), var(--accent-blue));
    border-radius: 12px;
    opacity: 0;
    transition: opacity var(--transition-fast);
    z-index: -1;
}

.concept-card:hover::before {
    opacity: 1;
}

.concept-card:hover {
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.3);
}

.card-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto var(--spacing-md);
    color: var(--electric-blue);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-icon svg {
    width: 100%;
    height: 100%;
}

.concept-card h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.concept-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Concepts Section */
.concepts {
    padding: var(--spacing-xl) var(--spacing-lg);
    background: var(--secondary-bg);
}

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

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--text-primary);
}

.concepts-grid {
    display: grid;
    gap: var(--spacing-xl);
}

/* Concept Sections */
.concept-section {
    background: rgba(11, 20, 38, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: var(--spacing-xl);
    transition: all var(--transition-medium);
}

.concept-section:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 10px 30px rgba(58, 123, 213, 0.1);
}

.concept-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.concept-header h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 600;
    color: var(--electric-blue);
}

/* Compression Stats */
.compression-stats {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--electric-blue);
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Visual Navigation Demo */
.visual-nav-demo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.demo-image {
    width: 60px;
    height: 60px;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}

.steganography-visualization {
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--accent-blue), var(--electric-blue));
    position: relative;
}

.steganography-visualization::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 60 60"><circle cx="15" cy="15" r="2" fill="rgba(255,255,255,0.8)"/><circle cx="45" cy="30" r="1.5" fill="rgba(255,255,255,0.6)"/><circle cx="30" cy="45" r="1" fill="rgba(255,255,255,0.4)"/></svg>');
}

.arrow {
    font-size: 1.5rem;
    color: var(--electric-blue);
}

.url-display {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text-secondary);
    background: rgba(0, 212, 255, 0.1);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    border: 1px solid var(--electric-blue);
}

/* Neural Visualization */
.neural-visualization {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.neural-nodes {
    display: flex;
    gap: var(--spacing-xs);
}

.node {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border-color);
    transition: all var(--transition-fast);
}

.node.active {
    background: var(--electric-blue);
    box-shadow: 0 0 10px var(--electric-blue);
    animation: neuralPulse 2s ease-in-out infinite;
}

@keyframes neuralPulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.2); }
}

.neural-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Concept Content */
.concept-description {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* Feature Lists */
.feature-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: rgba(58, 123, 213, 0.1);
    border-radius: 8px;
    border: 1px solid rgba(58, 123, 213, 0.2);
    transition: all var(--transition-fast);
}

.feature:hover {
    background: rgba(58, 123, 213, 0.2);
    border-color: var(--accent-blue);
}

.feature svg {
    width: 20px;
    height: 20px;
    color: var(--electric-blue);
}

.feature span {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Footer */
.footer {
    background: var(--primary-bg);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-lg);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-text p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--electric-blue);
}

/* Matrix Numbers Background Effect */
@keyframes matrix {
    0% { transform: translateY(-100vh); opacity: 1; }
    100% { transform: translateY(100vh); opacity: 0; }
}

/* Responsive Design */
/* Large Desktop (1440px+) */
@media (min-width: 1440px) {
    .container {
        max-width: 1400px;
    }
    
    .hero-title {
        font-size: 5rem;
    }
    
    .main-title {
        font-size: 10rem;
    }
}

/* Desktop (1024px - 1439px) */
@media (max-width: 1439px) and (min-width: 1024px) {
    .container {
        max-width: 1200px;
    }
}

/* Tablet Landscape (769px - 1023px) */
@media (max-width: 1023px) and (min-width: 769px) {
    .nav-menu {
        gap: var(--spacing-md);
        font-size: 0.9rem;
    }
    
    .hero-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--spacing-md);
    }
    
    .hero-grid .concept-card:last-child {
        grid-column: 1 / -1;
        max-width: 400px;
        margin: 0 auto;
    }
    
    .compression-stats {
        flex-wrap: wrap;
        justify-content: center;
    }
}

/* Show mobile menu for tablets and below */
@media (max-width: 768px) {
    .mobile-menu-btn {
        display: none !important;
    }

    .nav-menu {
        display: none;
    }

    .nav {
        min-height: 70px;
    }

    .nav-container {
        min-height: 70px;
        align-items: center;
        padding: var(--spacing-sm) var(--spacing-md);
        justify-content: center;
        flex-wrap: nowrap;
    }

    /* Hide mobile sidebar and overlay */
    .mobile-sidebar,
    .mobile-overlay {
        display: none !important;
    }

    /* Show mobile home button */
    .mobile-home-button {
        display: block;
    }

    /* Adjust main content spacing when mobile home button is present */
    .whitepaper-main {
        padding-top: calc(70px + 50px); /* nav height + smaller home button container height */
    }

    /* Add proper spacing to whitepaper title on mobile */
    .whitepaper-hero {
        padding-top: var(--spacing-md);
        margin-top: var(--spacing-sm);
    }

    .whitepaper-title {
        margin-top: var(--spacing-sm);
        padding-top: var(--spacing-xs);
    }

    /* Center and enlarge logo for mobile */
    .logo-text {
        margin: 0;
        font-size: 2rem;
        white-space: nowrap;
        flex-shrink: 0;
        text-align: center;
    }
}

/* Tablet Portrait (481px - 768px) */
@media (max-width: 768px) and (min-width: 481px) {
    .nav-container {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .nav-menu {
        gap: var(--spacing-sm);
        font-size: 0.85rem;
    }
    
    .hero {
        padding: calc(90px + var(--spacing-lg)) var(--spacing-md) var(--spacing-lg);
        min-height: 80vh;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .concept-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }
    
    .compression-stats {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .visual-nav-demo {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-md);
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }

    .cta-button {
        width: 100%;
        max-width: 280px;
    }
    
    .typing-line {
        font-size: 12px;
        line-height: 1.3;
    }
}

/* Mobile Landscape (376px - 480px) */
@media (max-width: 480px) and (min-width: 376px) {
    .nav-container {
        padding: var(--spacing-sm) var(--spacing-md);
        justify-content: center;
    }

    .logo-text {
        margin: 0;
        font-size: 1.8rem;
        text-align: center;
    }

    .nav-menu {
        display: none;
    }

    .mobile-menu-btn {
        display: none !important;
    }
    
    .hero {
        padding: calc(90px + var(--spacing-md)) var(--spacing-sm) var(--spacing-md);
        min-height: 70vh;
    }
    
    .main-title {
        font-size: clamp(2rem, 8vw, 4rem);
    }
    
    .subtitle {
        font-size: clamp(0.9rem, 3vw, 1.2rem);
    }
    
    .concept-section {
        padding: var(--spacing-md);
    }
    
    .feature-list {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .concept-card {
        padding: var(--spacing-md);
    }
    
    .card-icon {
        width: 50px;
        height: 50px;
    }
    
    .typing-line {
        font-size: 11px;
        line-height: 1.2;
    }
    
    .data-stream-bg {
        padding: 10px;
        font-size: 12px;
    }
}

/* Mobile Portrait (320px - 375px) */
@media (max-width: 375px) {
    .nav-container {
        padding: var(--spacing-sm) var(--spacing-md);
        justify-content: center;
        align-items: center;
    }

    .nav-menu {
        display: none;
    }

    .mobile-menu-btn {
        display: none !important;
    }

    .logo-text {
        font-size: 1.6rem;
        margin: 0;
        text-align: center;
    }

    
    .hero {
        padding: calc(90px + var(--spacing-sm)) var(--spacing-sm) var(--spacing-sm);
        min-height: 60vh;
    }
    
    .main-title {
        font-size: clamp(1.8rem, 12vw, 3rem);
        letter-spacing: 0.05em;
    }
    
    .subtitle {
        font-size: clamp(0.8rem, 4vw, 1rem);
        margin-bottom: var(--spacing-lg);
    }
    
    .hero-title {
        font-size: clamp(1.8rem, 8vw, 2.5rem);
    }
    
    .hero-subtitle {
        font-size: clamp(0.9rem, 4vw, 1.1rem);
    }
    
    .concept-section {
        padding: var(--spacing-sm);
        margin-bottom: var(--spacing-md);
    }
    
    .concept-header h3 {
        font-size: clamp(1.2rem, 5vw, 1.5rem);
    }
    
    .feature-list {
        grid-template-columns: 1fr;
        gap: var(--spacing-xs);
    }
    
    .feature {
        padding: var(--spacing-xs);
        font-size: 0.8rem;
    }
    
    .concept-card {
        padding: var(--spacing-sm);
    }
    
    .concept-card h3 {
        font-size: 1.2rem;
    }
    
    .concept-card p {
        font-size: 0.85rem;
    }
    
    .card-icon {
        width: 40px;
        height: 40px;
    }
    
    .compression-stats,
    .research-stats {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
    
    .stat {
        text-align: center;
    }
    
    .stat-number {
        font-size: 1.2rem;
    }
    
    .visual-nav-demo {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
    
    .loading-bar {
        width: 200px;
    }
    
    .typing-line {
        font-size: 10px;
        line-height: 1.1;
    }
    
    .data-stream-bg {
        padding: 5px;
        font-size: 10px;
    }
    
    .footer-content {
        padding: var(--spacing-sm);
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

/* Ultra-wide screens (2560px+) */
@media (min-width: 2560px) {
    .container {
        max-width: 2000px;
    }
    
    .hero-title {
        font-size: 6rem;
    }
    
    .main-title {
        font-size: 12rem;
    }
    
    .concept-section {
        padding: var(--spacing-xl);
    }
}

/* Liquid Glitch Effect */
.liquid-glitch {
    position: relative;
    overflow: hidden;
}

.liquid-glitch::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 212, 255, 0.4), transparent);
    animation: liquidFlow 3s ease-in-out infinite;
}

@keyframes liquidFlow {
    0% { left: -100%; }
    50% { left: 100%; }
    100% { left: -100%; }
}

/* Subtle RGB Glitch Effect for Cards */
.card-glitch {
    position: relative;
}

.card-glitch::before,
.card-glitch::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: inherit;
    border-radius: inherit;
    pointer-events: none;
    opacity: 0;
}

.card-glitch::before {
    background-color: rgba(255, 0, 0, 0.4);
    animation: subtleRed 0.3s ease-in-out;
}

.card-glitch::after {
    background-color: rgba(0, 255, 255, 0.4);
    animation: subtleCyan 0.3s ease-in-out;
}

@keyframes subtleRed {
    0%, 100% { 
        transform: translate(0); 
        opacity: 0; 
    }
    50% { 
        transform: translate(-1px, 0); 
        opacity: 0.6; 
    }
}

@keyframes subtleCyan {
    0%, 100% { 
        transform: translate(0); 
        opacity: 0; 
    }
    50% { 
        transform: translate(1px, 0); 
        opacity: 0.6; 
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--primary-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-blue);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--electric-blue);
}

/* Selection Styling */
::selection {
    background: rgba(0, 212, 255, 0.3);
    color: var(--text-primary);
}

/* Additional Page Styles */
.doc-meta, .contact-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.doc-status, .response-time {
    background: rgba(0, 212, 255, 0.1);
    color: var(--electric-blue);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-size: 0.8rem;
    font-weight: 500;
}

.code-example {
    background: rgba(11, 20, 38, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--spacing-md);
    margin: var(--spacing-md) 0;
    overflow-x: auto;
}

.code-example pre {
    margin: 0;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    line-height: 1.5;
}

.research-paper {
    border-left: 3px solid var(--electric-blue);
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.research-paper h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-size: 1.1rem;
}

.paper-meta {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
    font-style: italic;
}

.research-stats {
    display: flex;
    gap: var(--spacing-md);
}

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

.partner {
    background: rgba(58, 123, 213, 0.1);
    border: 1px solid rgba(58, 123, 213, 0.2);
    border-radius: 8px;
    padding: var(--spacing-md);
}

.partner h4 {
    color: var(--electric-blue);
    margin-bottom: var(--spacing-xs);
    font-size: 1rem;
}

.partner p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

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

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

.contact-item i {
    color: var(--electric-blue);
    margin-top: 2px;
    flex-shrink: 0;
}

.contact-item strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.contact-item p {
    color: var(--text-secondary);
    margin: 0;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

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

.form-group label {
    display: block;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    background: rgba(26, 35, 50, 0.8);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--electric-blue);
    box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.1);
}

.submit-btn {
    background: linear-gradient(135deg, var(--accent-blue), var(--electric-blue));
    border: none;
    border-radius: 8px;
    padding: var(--spacing-md) var(--spacing-xl);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin: 0 auto;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 212, 255, 0.3);
}

/* Documentation Page Responsiveness */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .research-stats,
    .contact-info {
        flex-direction: column;
    }
    
    .partner-grid {
        grid-template-columns: 1fr;
    }
    
    .doc-meta, .contact-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .code-example {
        padding: var(--spacing-sm);
        font-size: 0.8rem;
    }
    
    .research-paper {
        padding-left: var(--spacing-sm);
        margin-bottom: var(--spacing-md);
    }
    
    .research-paper h4 {
        font-size: 1rem;
    }
    
    .paper-meta {
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .doc-status, .response-time {
        font-size: 0.7rem;
        padding: 2px var(--spacing-xs);
    }
    
    .code-example {
        margin: var(--spacing-sm) 0;
        padding: var(--spacing-xs);
    }
    
    .code-example pre {
        font-size: 0.75rem;
        overflow-x: auto;
    }
    
    .contact-item {
        flex-direction: column;
        gap: var(--spacing-xs);
        text-align: center;
    }
    
    .contact-item i {
        margin-top: 0;
        align-self: center;
    }
}

/* Enhanced Mobile Responsiveness */
@media (max-width: 768px) {
    /* Hide stat labels on mobile */
    .compression-stats .stat .stat-label,
    .concept-header .compression-stats .stat-label,
    .stat-label {
        display: none !important;
        visibility: hidden !important;
        opacity: 0 !important;
        height: 0 !important;
        overflow: hidden !important;
    }
    /* Hero section improvements */
    .hero {
        padding: var(--spacing-xl) 0;
        min-height: auto;
    }

    .hero-content {
        padding: 0 var(--spacing-md);
    }

    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
        margin-bottom: var(--spacing-md);
    }

    .hero-subtitle {
        font-size: 1rem;
        line-height: 1.4;
        margin-bottom: var(--spacing-lg);
    }

    .hero-cta {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: center;
    }

    .cta-button {
        width: 100%;
        max-width: 280px;
    }

    /* Concept cards grid */
    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
        margin-top: var(--spacing-xl);
    }

    .concept-card {
        padding: var(--spacing-lg);
    }

    .concept-card h3 {
        font-size: 1.1rem;
    }

    .concept-card p {
        font-size: 0.9rem;
    }

    /* Concepts section */
    .concepts {
        padding: var(--spacing-xl) 0;
    }

    .section-title {
        font-size: 1.8rem;
        margin-bottom: var(--spacing-lg);
    }

    .concept-section {
        margin-bottom: var(--spacing-xl);
        padding: var(--spacing-lg);
    }

    .concept-header h3 {
        font-size: 1.3rem;
        margin-bottom: var(--spacing-md);
    }

    .compression-stats {
        flex-direction: column;
        gap: var(--spacing-sm);
        margin-top: var(--spacing-md);
    }

    .stat {
        text-align: center;
        position: relative;
        padding: var(--spacing-md);
        background: rgba(255, 255, 255, 0.05);
        border-radius: 8px;
        min-height: 60px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .stat-number {
        font-size: 1.2rem;
        z-index: 2;
    }

    .stat-label {
        display: none !important;
    }

    .feature-list {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
        margin-top: var(--spacing-md);
    }

    .feature {
        padding: var(--spacing-sm);
    }

    /* Footer mobile styles */
    .footer {
        padding: var(--spacing-md);
        text-align: center;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .footer-text p {
        font-size: 0.8rem;
        line-height: 1.4;
    }

    .footer-links {
        justify-content: center;
        gap: var(--spacing-md);
        flex-wrap: wrap;
    }

    .footer-link {
        font-size: 0.8rem;
    }
}

/* Whitepaper Mobile Styles */
@media (max-width: 768px) {
    .whitepaper-hero {
        padding: var(--spacing-xl) 0;
    }

    .whitepaper-title {
        font-size: 2rem;
        margin-bottom: var(--spacing-md);
    }

    .whitepaper-subtitle {
        font-size: 1rem;
        margin-bottom: var(--spacing-lg);
    }

    /* Data flow animation mobile */
    .data-flow-animation {
        flex-direction: column;
        gap: var(--spacing-md);
        padding: var(--spacing-md);
        margin: var(--spacing-lg) 0;
    }

    .flow-step {
        width: 100%;
        max-width: 200px;
        margin: 0 auto;
    }

    .flow-arrow {
        transform: rotate(90deg);
        width: 60px;
        height: auto;
        margin: var(--spacing-sm) auto;
    }

    .process-label {
        font-size: 0.8rem;
        margin-top: var(--spacing-xs);
    }

    .data-block {
        padding: var(--spacing-md);
        min-height: 80px;
    }

    .data-size {
        font-size: 1.5rem;
    }

    .data-unit {
        font-size: 0.9rem;
    }

    /* Stats display mobile */
    .flow-stats {
        flex-direction: column;
        gap: var(--spacing-md);
        margin-top: var(--spacing-lg);
    }

    .stat-item {
        text-align: center;
        padding: var(--spacing-md);
        background: rgba(255, 255, 255, 0.05);
        border-radius: 8px;
    }

    .stat-value {
        font-size: 1.8rem;
        display: block;
        margin-bottom: var(--spacing-xs);
    }

    .stat-label {
        display: none !important;
    }
}

/* Small mobile phones */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.8rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }

    .concept-card {
        padding: var(--spacing-md);
    }

    .concept-card h3 {
        font-size: 1rem;
    }

    .concept-card p {
        font-size: 0.85rem;
    }

    .whitepaper-title {
        font-size: 1.6rem;
    }

    .data-size {
        font-size: 1.2rem;
    }

    .flow-arrow {
        width: 40px;
    }
}