/* ============================================
   INFINITY AI SPACE MINING ACADEMY
   Production-Ready Stylesheet
   ============================================ */

/* --------------------------------------------
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   -------------------------------------------- */
:root {
    /* Core Colors */
    --color-bg-deep: #050a14;
    --color-bg-mid: #0a1525;
    --color-bg-light: #0f1d33;
    --color-surface: rgba(15, 29, 51, 0.6);
    
    /* Neon Accents */
    --color-primary: #00d4ff;
    --color-primary-dim: #00a8cc;
    --color-secondary: #7c3aed;
    --color-accent: #f59e0b;
    
    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #050a14 0%, #0a1525 50%, #0d1f3a 100%);
    --gradient-glow: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    --gradient-card: linear-gradient(180deg, rgba(0,212,255,0.08) 0%, transparent 100%);
    
    /* Glassmorphism */
    --glass-bg: rgba(10, 21, 37, 0.7);
    --glass-border: rgba(0, 212, 255, 0.15);
    --glass-blur: blur(20px);
    
    /* Typography */
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Rajdhani', sans-serif;
    
    /* Spacing Scale */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 10rem;
    
    /* Animation */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Layout */
    --container-max: 1280px;
    --nav-height: 72px;
}

/* --------------------------------------------
   2. RESET & BASE STYLES
   -------------------------------------------- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.6;
    color: #e2e8f0;
    background: var(--color-bg-deep);
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

ul {
    list-style: none;
}

img, svg {
    display: block;
    max-width: 100%;
}

/* --------------------------------------------
   3. UTILITY CLASSES
   -------------------------------------------- */
.text-glow {
    color: var(--color-primary);
    text-shadow: 0 0 20px rgba(0, 212, 255, 0.4), 0 0 40px rgba(0, 212, 255, 0.2);
}

.text-gradient {
    background: var(--gradient-glow);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-eyebrow {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: var(--space-sm);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    color: #fff;
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: #94a3b8;
    max-width: 600px;
}

.section-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* --------------------------------------------
   4. BUTTONS
   -------------------------------------------- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.875rem 2rem;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

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

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.btn-primary:hover::before {
    transform: translateX(100%);
}

.btn-primary:hover {
    background: var(--color-primary-dim);
    transform: translateY(-2px);
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--color-primary);
    border: 1px solid var(--color-primary);
}

.btn-secondary:hover {
    background: rgba(0, 212, 255, 0.1);
    box-shadow: 0 0 30px rgba(0, 212, 255, 0.15);
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.btn-icon {
    transition: transform var(--transition-base);
}

.btn:hover .btn-icon {
    transform: translateX(4px);
}

/* --------------------------------------------
   5. NAVIGATION
   -------------------------------------------- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-height);
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--glass-border);
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.25rem;
    color: #fff;
}

.logo-icon {
    color: var(--color-primary);
    font-size: 1.5rem;
    animation: pulse-glow 3s ease-in-out infinite;
}

.logo-text {
    letter-spacing: 0.1em;
}

.nav-menu {
    display: flex;
    gap: var(--space-lg);
}

.nav-link {
    font-family: var(--font-display);
    font-size: 0.8125rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #94a3b8;
    padding: 0.5rem 0;
    position: relative;
    transition: color var(--transition-base);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: #fff;
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background: #fff;
    transition: all var(--transition-base);
}

/* --------------------------------------------
   6. HERO SECTION
   -------------------------------------------- */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: var(--gradient-hero);
}

/* Starfield */
.stars-container {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.star {
    position: absolute;
    width: 2px;
    height: 2px;
    background: #fff;
    border-radius: 50%;
    animation: twinkle var(--duration, 3s) ease-in-out infinite;
    animation-delay: var(--delay, 0s);
}

/* Asteroid Field */
.asteroid-field {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.asteroid {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(0,212,255,0.15), transparent);
    border: 1px solid rgba(0, 212, 255, 0.1);
    animation: float-asteroid var(--duration, 20s) linear infinite;
}

/* Hero Content */
.hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    max-width: 900px;
    padding: 0 var(--space-lg);
    padding-top: var(--nav-height);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-display);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    color: var(--color-primary);
    margin-bottom: var(--space-lg);
    padding: 0.5rem 1rem;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 100px;
}

.badge-pulse {
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 7vw, 5.5rem);
    font-weight: 900;
    line-height: 1.1;
    color: #fff;
    margin-bottom: var(--space-lg);
}

.title-line {
    display: block;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: #94a3b8;
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-3xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    flex-wrap: wrap;
}

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

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
}

.scroll-text {
    font-family: var(--font-display);
    font-size: 0.6875rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: #64748b;
}

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scroll-pulse 2s ease-in-out infinite;
}

/* --------------------------------------------
   7. ABOUT SECTION
   -------------------------------------------- */
.about {
    padding: var(--space-3xl) 0;
    position: relative;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
}

/* Hologram Visual */
.hologram-container {
    position: relative;
    width: 100%;
    aspect-ratio: 1;
    max-width: 500px;
    margin: 0 auto;
}

.hologram-ring {
    position: absolute;
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 50%;
    animation: rotate-ring var(--duration, 10s) linear infinite;
}

.ring-1 {
    width: 60%;
    height: 60%;
    top: 20%;
    left: 20%;
    --duration: 12s;
}

.ring-2 {
    width: 80%;
    height: 80%;
    top: 10%;
    left: 10%;
    --duration: 18s;
    animation-direction: reverse;
}

.ring-3 {
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    --duration: 24s;
}

.hologram-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, rgba(0,212,255,0.3), transparent 70%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.core-symbol {
    font-size: 2rem;
    color: var(--color-primary);
    animation: pulse-glow 2s ease-in-out infinite;
}

.hologram-data {
    position: absolute;
    bottom: 10%;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.data-row {
    display: flex;
    gap: 1rem;
    font-family: var(--font-display);
    font-size: 0.6875rem;
    letter-spacing: 0.1em;
}

.data-label {
    color: #64748b;
}

.data-value {
    color: var(--color-primary);
}

.about-text {
    font-size: 1.0625rem;
    color: #94a3b8;
    margin-bottom: var(--space-md);
    line-height: 1.8;
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

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

.feature-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.feature-icon svg {
    width: 24px;
    height: 24px;
}

.feature-info h4 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 0.25rem;
}

.feature-info p {
    font-size: 0.9375rem;
    color: #64748b;
}

/* --------------------------------------------
   8. PROGRAMS SECTION
   -------------------------------------------- */
.programs {
    padding: var(--space-3xl) 0;
    background: linear-gradient(180deg, var(--color-bg-deep) 0%, var(--color-bg-mid) 100%);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.programs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.program-card {
    position: relative;
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: var(--space-xl);
    overflow: hidden;
    transition: all var(--transition-slow);
}

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(0,212,255,0.15) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-slow);
    pointer-events: none;
}

.program-card:hover {
    transform: translateY(-8px);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3), 0 0 40px rgba(0, 212, 255, 0.1);
}

.program-card:hover .card-glow {
    opacity: 1;
}

.card-content {
    position: relative;
    z-index: 1;
}

.card-number {
    position: absolute;
    top: 0;
    right: 0;
    font-family: var(--font-display);
    font-size: 6rem;
    font-weight: 900;
    color: rgba(0, 212, 255, 0.05);
    line-height: 1;
}

.card-icon {
    width: 64px;
    height: 64px;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

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

.card-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: var(--space-sm);
}

.card-desc {
    font-size: 1rem;
    color: #94a3b8;
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.card-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: var(--space-lg);
}

.card-list li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
    color: #cbd5e1;
}

.card-list li::before {
    content: '›';
    color: var(--color-primary);
    font-weight: bold;
}

.card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary);
    transition: gap var(--transition-base);
}

.card-link svg {
    width: 16px;
    height: 16px;
}

.card-link:hover {
    gap: 0.75rem;
}

/* --------------------------------------------
   9. INNOVATION LAB SECTION
   -------------------------------------------- */
.lab {
    padding: var(--space-3xl) 0;
    position: relative;
}

.lab-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.concept-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    overflow: hidden;
    transition: all var(--transition-slow);
}

.concept-card:hover {
    transform: translateY(-4px) scale(1.02);
    border-color: rgba(0, 212, 255, 0.3);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
}

.concept-visual {
    position: relative;
    height: 200px;
    background: linear-gradient(135deg, var(--color-bg-mid), var(--color-bg-light));
    overflow: hidden;
}

.concept-hologram {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.holo-shape {
    width: 80px;
    height: 80px;
    position: relative;
}

.shape-drill {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    clip-path: polygon(50% 0%, 100% 50%, 50% 100%, 0% 50%);
    animation: hologram-float 4s ease-in-out infinite;
}

.shape-swarm {
    background: radial-gradient(circle, var(--color-primary) 20%, transparent 20%);
    background-size: 20px 20px;
    animation: hologram-rotate 8s linear infinite;
}

.shape-refinery {
    background: conic-gradient(from 0deg, var(--color-primary), var(--color-secondary), var(--color-primary));
    border-radius: 50%;
    animation: hologram-pulse 3s ease-in-out infinite;
}

.shape-prospector {
    background: linear-gradient(90deg, var(--color-primary), transparent);
    clip-path: polygon(0 50%, 100% 0, 100% 100%);
    animation: hologram-sweep 3s ease-in-out infinite;
}

.shape-tether {
    width: 60px;
    height: 120px;
    border: 2px solid var(--color-primary);
    border-radius: 50%;
    animation: hologram-spin 6s linear infinite;
}

.shape-habitat {
    background: repeating-linear-gradient(
        45deg,
        var(--color-primary),
        var(--color-primary) 5px,
        transparent 5px,
        transparent 10px
    );
    clip-path: polygon(25% 0%, 75% 0%, 100% 50%, 75% 100%, 25% 100%, 0% 50%);
    animation: hologram-float 5s ease-in-out infinite;
}

.concept-overlay {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
}

.concept-status {
    font-family: var(--font-display);
    font-size: 0.625rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    padding: 0.375rem 0.75rem;
    background: rgba(0, 212, 255, 0.15);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: 4px;
    color: var(--color-primary);
}

.concept-info {
    padding: var(--space-lg);
}

.concept-title {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: var(--space-xs);
}

.concept-desc {
    font-size: 0.9375rem;
    color: #94a3b8;
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.concept-meta {
    display: flex;
    gap: 0.5rem;
}

.meta-tag {
    font-family: var(--font-display);
    font-size: 0.625rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    padding: 0.25rem 0.625rem;
    background: rgba(124, 58, 237, 0.15);
    border: 1px solid rgba(124, 58, 237, 0.3);
    border-radius: 4px;
    color: var(--color-secondary);
}

/* --------------------------------------------
   10. CONTACT SECTION
   -------------------------------------------- */
.contact {
    padding: var(--space-3xl) 0;
    background: linear-gradient(180deg, var(--color-bg-mid), var(--color-bg-deep));
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: start;
}

.contact-desc {
    font-size: 1.0625rem;
    color: #94a3b8;
    line-height: 1.8;
    margin-bottom: var(--space-xl);
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.contact-item {
    display: flex;
    gap: var(--space-md);
    align-items: flex-start;
    padding: var(--space-md);
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    transition: all var(--transition-base);
}

.contact-item:hover {
    border-color: rgba(0, 212, 255, 0.3);
    transform: translateX(4px);
}

.contact-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    background: rgba(0, 212, 255, 0.1);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
}

.contact-icon svg {
    width: 22px;
    height: 22px;
}

.contact-text {
    display: flex;
    flex-direction: column;
}

.contact-label {
    font-family: var(--font-display);
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: #64748b;
    margin-bottom: 0.25rem;
}

.contact-value {
    font-size: 1rem;
    font-weight: 500;
    color: #e2e8f0;
}

/* Contact Form */
.contact-form-wrapper {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: var(--space-xl);
}

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

.form-group label {
    display: block;
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #94a3b8;
    margin-bottom: var(--space-xs);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background: rgba(5, 10, 20, 0.6);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 8px;
    color: #e2e8f0;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #475569;
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2300d4ff' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}

.form-group select option {
    background: var(--color-bg-deep);
    color: #e2e8f0;
}

/* --------------------------------------------
   11. FOOTER
   -------------------------------------------- */
.footer {
    padding: var(--space-2xl) 0 var(--space-lg);
    border-top: 1px solid rgba(0, 212, 255, 0.1);
}

.footer-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.footer-brand {
    margin-bottom: var(--space-xl);
}

.footer-logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.5rem;
    color: #fff;
    margin-bottom: var(--space-xs);
}

.footer-tagline {
    font-size: 0.9375rem;
    color: #64748b;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.footer-column h4 {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #fff;
    margin-bottom: var(--space-md);
}

.footer-column ul {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-column a {
    font-size: 0.9375rem;
    color: #94a3b8;
    transition: color var(--transition-base);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(0, 212, 255, 0.1);
    flex-wrap: wrap;
    gap: var(--space-md);
}

.copyright {
    font-size: 0.875rem;
    color: #475569;
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 8px;
    color: #94a3b8;
    transition: all var(--transition-base);
}

.footer-social a:hover {
    background: rgba(0, 212, 255, 0.2);
    color: var(--color-primary);
    transform: translateY(-2px);
}

.footer-social svg {
    width: 18px;
    height: 18px;
}

/* --------------------------------------------
   12. ANIMATIONS
   -------------------------------------------- */
@keyframes twinkle {
    0%, 100% { opacity: 0.3; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.2); }
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

@keyframes pulse-glow {
    0%, 100% { filter: drop-shadow(0 0 5px var(--color-primary)); }
    50% { filter: drop-shadow(0 0 20px var(--color-primary)); }
}

@keyframes scroll-pulse {
    0%, 100% { transform: scaleY(1); opacity: 1; }
    50% { transform: scaleY(0.5); opacity: 0.5; }
}

@keyframes rotate-ring {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes float-asteroid {
    0% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(20px, -30px) rotate(90deg); }
    50% { transform: translate(-10px, -60px) rotate(180deg); }
    75% { transform: translate(-30px, -30px) rotate(270deg); }
    100% { transform: translate(0, 0) rotate(360deg); }
}

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

@keyframes hologram-rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes hologram-pulse {
    0%, 100% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.1); opacity: 1; }
}

@keyframes hologram-sweep {
    0%, 100% { transform: rotate(0deg); }
    50% { transform: rotate(180deg); }
}

@keyframes hologram-spin {
    from { transform: rotateY(0deg); }
    to { transform: rotateY(360deg); }
}

/* --------------------------------------------
   13. RESPONSIVE DESIGN
   -------------------------------------------- */
@media (max-width: 1024px) {
    .about-grid,
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
    
    .about-visual {
        order: -1;
    }
    
    .hologram-container {
        max-width: 350px;
    }
}

@media (max-width: 768px) {
    :root {
        --nav-height: 64px;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(5, 10, 20, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: var(--space-xl);
        transform: translateX(100%);
        transition: transform var(--transition-slow) var(--ease-out-expo);
    }
    
    .nav-menu.active {
        transform: translateX(0);
    }
    
    .nav-link {
        font-size: 1.25rem;
    }
    
    .programs-grid {
        grid-template-columns: 1fr;
    }
    
    .lab-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-stats {
        gap: var(--space-lg);
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .lab-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-item {
        flex-direction: column;
        text-align: center;
    }
    
    .contact-icon {
        margin: 0 auto;
    }
    
    .section-container {
        padding: 0 var(--space-sm);
    }
}

/* --------------------------------------------
   14. REDUCED MOTION
   -------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
}

/* --------------------------------------------
   15. SCROLL REVEAL UTILITIES
   -------------------------------------------- */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s var(--ease-out-expo), transform 0.8s var(--ease-out-expo);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }
.reveal-delay-4 { transition-delay: 0.4s; }
.reveal-delay-5 { transition-delay: 0.5s; }
.reveal-delay-6 { transition-delay: 0.6s; }