/* ============================================
   QUANTUM AI SMART AIRPORT ACADEMY
   Premium AviationTech Campus Stylesheet
   ============================================ */

/* ============================================
   CSS CUSTOM PROPERTIES & DESIGN TOKENS
   ============================================ */
:root {
    /* Core Color Palette - Midnight Blue, Silver, Cyan */
    --color-midnight-900: #020617;
    --color-midnight-800: #0a0f1e;
    --color-midnight-700: #0f172a;
    --color-midnight-600: #1e293b;
    --color-midnight-500: #334155;
    
    --color-cyan-400: #22d3ee;
    --color-cyan-500: #06b6d4;
    --color-cyan-300: #67e8f9;
    --color-cyan-600: #0891b2;
    --color-cyan-glow: rgba(6, 182, 212, 0.4);
    
    --color-silver-100: #f1f5f9;
    --color-silver-200: #e2e8f0;
    --color-silver-300: #cbd5e1;
    --color-silver-400: #94a3b8;
    --color-silver-500: #64748b;
    
    /* Gradient Definitions */
    --gradient-primary: linear-gradient(135deg, var(--color-cyan-500) 0%, var(--color-cyan-300) 50%, var(--color-silver-200) 100%);
    --gradient-dark: linear-gradient(180deg, var(--color-midnight-900) 0%, var(--color-midnight-800) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    --gradient-hero: linear-gradient(135deg, var(--color-midnight-900) 0%, var(--color-midnight-800) 40%, #0c4a6e 100%);
    
    /* Typography */
    --font-display: 'Orbitron', sans-serif;
    --font-heading: 'Rajdhani', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Shadows & Glows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-cyan: 0 0 20px var(--color-cyan-glow);
    --shadow-glow: 0 0 40px rgba(34, 211, 238, 0.15);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    --transition-smooth: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-Index Scale */
    --z-canvas: 0;
    --z-content: 10;
    --z-nav: 100;
    --z-modal: 1000;
    
    /* Container */
    --container-max: 1280px;
    --container-padding: clamp(var(--space-4), 4vw, var(--space-12));
}

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

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

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-silver-200);
    background: var(--color-midnight-900);
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
    transition: color var(--transition-base);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ============================================
   ANIMATED BACKGROUND CANVAS
   ============================================ */
#networkCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-canvas);
    pointer-events: none;
    opacity: 0.6;
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-16);
}

.section-header.align-left {
    text-align: left;
}

.section-header.light .section-title,
.section-header.light .section-desc {
    color: var(--color-silver-100);
}

.section-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-cyan-400);
    margin-bottom: var(--space-4);
    position: relative;
}

.section-tag::before {
    content: '';
    display: inline-block;
    width: 24px;
    height: 2px;
    background: var(--gradient-primary);
    margin-right: var(--space-3);
    vertical-align: middle;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-silver-100);
    margin-bottom: var(--space-4);
}

.section-desc {
    font-size: 1.125rem;
    color: var(--color-silver-400);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

/* ============================================
   GLASSMORPHISM COMPONENTS
   ============================================ */
.glass-card {
    background: var(--gradient-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-xl);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.glass-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.glass-panel {
    background: rgba(15, 23, 42, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(34, 211, 238, 0.1);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-6);
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-midnight-900);
    box-shadow: var(--shadow-cyan);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--color-cyan-glow), 0 8px 25px rgba(6, 182, 212, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--color-silver-200);
    border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--color-cyan-400);
    color: var(--color-cyan-300);
}

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

.btn-arrow {
    width: 18px;
    height: 18px;
    transition: transform var(--transition-base);
}

.btn:hover .btn-arrow {
    transform: translateX(3px);
}

/* ============================================
   NAVIGATION
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-nav);
    padding: var(--space-4) 0;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    background: rgba(2, 6, 23, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(34, 211, 238, 0.08);
    padding: var(--space-3) 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.logo-icon {
    width: 40px;
    height: 40px;
    color: var(--color-cyan-400);
    flex-shrink: 0;
}

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

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

.logo-main {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-silver-100);
    letter-spacing: 0.05em;
    line-height: 1.2;
}

.logo-sub {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-silver-500);
    letter-spacing: 0.08em;
    line-height: 1.2;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

.nav-link {
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-silver-300);
    position: relative;
    padding: var(--space-2) 0;
    transition: color var(--transition-base);
}

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

.nav-link:hover {
    color: var(--color-cyan-300);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-silver-200);
    transition: all var(--transition-base);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--space-24) + 60px) 0 var(--space-16);
    background: var(--gradient-hero);
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: var(--z-content);
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-2) var(--space-4);
    background: rgba(34, 211, 238, 0.08);
    border: 1px solid rgba(34, 211, 238, 0.2);
    border-radius: var(--radius-full);
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-cyan-300);
    margin-bottom: var(--space-6);
}

.badge-pulse {
    width: 8px;
    height: 8px;
    background: var(--color-cyan-400);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.2); }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    color: var(--color-silver-100);
    margin-bottom: var(--space-6);
}

.title-line {
    display: block;
}

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

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-silver-400);
    line-height: 1.7;
    margin-bottom: var(--space-8);
    max-width: 520px;
}

.hero-cta {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: var(--space-10);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-cyan-300);
    line-height: 1;
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--color-silver-500);
    margin-top: var(--space-1);
}

/* Hero Visual - Holographic Airport */
.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.holographic-airport {
    position: relative;
    width: 400px;
    height: 400px;
}

.airport-ring {
    position: absolute;
    border: 1px solid rgba(34, 211, 238, 0.15);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.ring-1 {
    width: 200px;
    height: 200px;
    animation: rotate 20s linear infinite;
}

.ring-2 {
    width: 280px;
    height: 280px;
    animation: rotate 30s linear infinite reverse;
}

.ring-3 {
    width: 360px;
    height: 360px;
    animation: rotate 40s linear infinite;
}

@keyframes rotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.airport-core {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    color: var(--color-cyan-400);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(-50%, -50%) translateY(0); }
    50% { transform: translate(-50%, -50%) translateY(-15px); }
}

.airport-core svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 20px var(--color-cyan-glow));
}

.orbit-particle {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--color-cyan-400);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--color-cyan-glow);
}

.p1 { top: 10%; left: 50%; animation: orbit 8s linear infinite; }
.p2 { top: 50%; right: 10%; animation: orbit 10s linear infinite reverse; }
.p3 { bottom: 10%; left: 50%; animation: orbit 12s linear infinite; }
.p4 { top: 50%; left: 10%; animation: orbit 9s linear infinite reverse; }

@keyframes orbit {
    from { transform: rotate(0deg) translateX(180px) rotate(0deg); }
    to { transform: rotate(360deg) translateX(180px) rotate(-360deg); }
}

/* Scroll Indicator */
.hero-scroll {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
}

.scroll-mouse {
    width: 24px;
    height: 36px;
    border: 2px solid var(--color-silver-500);
    border-radius: 12px;
    position: relative;
}

.scroll-wheel {
    width: 4px;
    height: 8px;
    background: var(--color-cyan-400);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s ease-in-out infinite;
}

@keyframes scrollWheel {
    0%, 100% { opacity: 1; top: 6px; }
    50% { opacity: 0.3; top: 16px; }
}

.scroll-indicator span {
    font-size: 0.75rem;
    color: var(--color-silver-500);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about {
    padding: var(--space-24) 0;
    position: relative;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
    margin-bottom: var(--space-20);
}

.about-card {
    padding: var(--space-8);
    text-align: center;
}

.card-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-5);
    color: var(--color-cyan-400);
}

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

.about-card h3 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-silver-100);
    margin-bottom: var(--space-3);
}

.about-card p {
    font-size: 0.9375rem;
    color: var(--color-silver-400);
    line-height: 1.6;
}

.about-image-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
}

.about-image-container {
    position: relative;
}

.image-frame {
    position: relative;
    padding: var(--space-4);
}

.frame-corner {
    position: absolute;
    width: 40px;
    height: 40px;
    border-color: var(--color-cyan-400);
}

.frame-corner.tl {
    top: 0;
    left: 0;
    border-top: 2px solid;
    border-left: 2px solid;
}

.frame-corner.tr {
    top: 0;
    right: 0;
    border-top: 2px solid;
    border-right: 2px solid;
}

.frame-corner.bl {
    bottom: 0;
    left: 0;
    border-bottom: 2px solid;
    border-left: 2px solid;
}

.frame-corner.br {
    bottom: 0;
    right: 0;
    border-bottom: 2px solid;
    border-right: 2px solid;
}

.image-placeholder {
    aspect-ratio: 16 / 10;
    background: var(--color-midnight-700);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    color: var(--color-cyan-400);
}

.placeholder-content svg {
    width: 200px;
    height: 120px;
    opacity: 0.6;
}

.placeholder-content span {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    color: var(--color-silver-400);
}

.about-text-content h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-silver-100);
    margin-bottom: var(--space-4);
}

.about-text-content p {
    color: var(--color-silver-400);
    margin-bottom: var(--space-4);
    line-height: 1.7;
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-top: var(--space-6);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-size: 0.9375rem;
    color: var(--color-silver-300);
}

.feature-check {
    color: var(--color-cyan-400);
    font-size: 0.75rem;
}

/* ============================================
   SYSTEMS SECTION
   ============================================ */
.systems {
    padding: var(--space-24) 0;
    background: var(--gradient-dark);
    position: relative;
}

.systems::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-cyan-400), transparent);
    opacity: 0.3;
}

.systems-showcase {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.system-panel {
    padding: var(--space-6);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.system-panel:hover {
    border-color: rgba(34, 211, 238, 0.3);
    transform: translateY(-4px);
}

.system-panel.active {
    border-color: rgba(34, 211, 238, 0.4);
    box-shadow: var(--shadow-glow);
}

.panel-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.panel-icon {
    width: 40px;
    height: 40px;
    color: var(--color-cyan-400);
}

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

.panel-header h3 {
    font-family: var(--font-heading);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-silver-100);
    flex: 1;
}

.panel-status {
    font-family: var(--font-display);
    font-size: 0.625rem;
    font-weight: 700;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    letter-spacing: 0.1em;
}

.panel-status.online {
    background: rgba(34, 197, 94, 0.15);
    color: #4ade80;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.panel-body p {
    font-size: 0.9375rem;
    color: var(--color-silver-400);
    line-height: 1.6;
    margin-bottom: var(--space-4);
}

.panel-metrics {
    display: flex;
    gap: var(--space-6);
}

.metric {
    display: flex;
    flex-direction: column;
}

.metric-value {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-cyan-300);
}

.metric-label {
    font-size: 0.75rem;
    color: var(--color-silver-500);
}

.panel-visual {
    margin-top: var(--space-6);
    height: 120px;
    position: relative;
}

/* Radar Animation */
.radar-screen {
    position: relative;
    width: 100%;
    height: 100%;
    border-radius: var(--radius-lg);
    background: rgba(34, 211, 238, 0.03);
    border: 1px solid rgba(34, 211, 238, 0.1);
    overflow: hidden;
}

.radar-sweep {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-cyan-400), transparent);
    transform-origin: left center;
    animation: radarSweep 3s linear infinite;
}

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

.radar-blip {
    position: absolute;
    width: 8px;
    height: 8px;
    background: var(--color-cyan-400);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--color-cyan-glow);
    animation: blip 2s ease-in-out infinite;
}

.radar-blip.b1 { top: 30%; left: 40%; animation-delay: 0s; }
.radar-blip.b2 { top: 60%; left: 70%; animation-delay: 0.5s; }
.radar-blip.b3 { top: 45%; left: 25%; animation-delay: 1s; }
.radar-blip.b4 { top: 70%; left: 55%; animation-delay: 1.5s; }

@keyframes blip {
    0%, 100% { opacity: 0.3; transform: scale(0.8); }
    50% { opacity: 1; transform: scale(1.2); }
}

/* Vehicle Grid Animation */
.vehicle-grid {
    position: relative;
    width: 100%;
    height: 100%;
}

.vehicle-node {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--color-cyan-400);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--color-cyan-glow);
}

.vehicle-node.v1 { top: 20%; left: 20%; animation: vehicleMove1 4s ease-in-out infinite; }
.vehicle-node.v2 { top: 20%; right: 20%; animation: vehicleMove2 5s ease-in-out infinite; }
.vehicle-node.v3 { bottom: 20%; left: 30%; animation: vehicleMove3 6s ease-in-out infinite; }
.vehicle-node.v4 { bottom: 20%; right: 25%; animation: vehicleMove4 4.5s ease-in-out infinite; }

@keyframes vehicleMove1 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, 20px); }
}

@keyframes vehicleMove2 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-25px, 30px); }
}

@keyframes vehicleMove3 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(20px, -25px); }
}

@keyframes vehicleMove4 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(-30px, -20px); }
}

.vehicle-path {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 60%;
    height: 60%;
    transform: translate(-50%, -50%);
    border: 1px dashed rgba(34, 211, 238, 0.2);
    border-radius: 50%;
    animation: pathRotate 10s linear infinite;
}

@keyframes pathRotate {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Flow Chart Animation */
.flow-chart {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: var(--space-3);
    height: 100%;
    padding: 0 var(--space-6);
}

.flow-bar {
    width: 24px;
    background: linear-gradient(180deg, var(--color-cyan-400), transparent);
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    opacity: 0.7;
}

.flow-bar.f1 { height: 40%; animation: flowGrow1 3s ease-in-out infinite; }
.flow-bar.f2 { height: 70%; animation: flowGrow2 3.5s ease-in-out infinite; }
.flow-bar.f3 { height: 55%; animation: flowGrow3 4s ease-in-out infinite; }
.flow-bar.f4 { height: 85%; animation: flowGrow4 3.2s ease-in-out infinite; }
.flow-bar.f5 { height: 60%; animation: flowGrow5 3.8s ease-in-out infinite; }

@keyframes flowGrow1 {
    0%, 100% { height: 40%; }
    50% { height: 60%; }
}

@keyframes flowGrow2 {
    0%, 100% { height: 70%; }
    50% { height: 50%; }
}

@keyframes flowGrow3 {
    0%, 100% { height: 55%; }
    50% { height: 75%; }
}

@keyframes flowGrow4 {
    0%, 100% { height: 85%; }
    50% { height: 65%; }
}

@keyframes flowGrow5 {
    0%, 100% { height: 60%; }
    50% { height: 80%; }
}

.flow-line {
    position: absolute;
    bottom: 0;
    left: 10%;
    right: 10%;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-cyan-400), transparent);
}

/* ============================================
   PROGRAMS SECTION
   ============================================ */
.programs {
    padding: var(--space-24) 0;
    position: relative;
}

.programs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-6);
}

.program-card {
    position: relative;
    padding: var(--space-8);
    background: var(--color-midnight-800);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    overflow: hidden;
}

.program-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.program-card:hover {
    transform: translateY(-6px);
    border-color: rgba(34, 211, 238, 0.15);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3), var(--shadow-glow);
}

.program-card.featured {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.05) 0%, var(--color-midnight-800) 100%);
    border-color: rgba(34, 211, 238, 0.2);
}

.program-badge {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    padding: var(--space-1) var(--space-3);
    background: var(--gradient-primary);
    color: var(--color-midnight-900);
    font-family: var(--font-display);
    font-size: 0.625rem;
    font-weight: 700;
    border-radius: var(--radius-full);
    letter-spacing: 0.05em;
}

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.08) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

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

.program-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 900;
    color: rgba(34, 211, 238, 0.1);
    line-height: 1;
    margin-bottom: var(--space-2);
}

.program-icon {
    width: 56px;
    height: 56px;
    color: var(--color-cyan-400);
    margin-bottom: var(--space-4);
}

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

.program-card h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-silver-100);
    margin-bottom: var(--space-2);
}

.program-duration {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    color: var(--color-cyan-300);
    margin-bottom: var(--space-4);
}

.program-card > p {
    font-size: 0.9375rem;
    color: var(--color-silver-400);
    line-height: 1.6;
    margin-bottom: var(--space-5);
}

.program-modules {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
}

.program-modules li {
    font-size: 0.875rem;
    color: var(--color-silver-300);
    padding-left: var(--space-4);
    position: relative;
}

.program-modules li::before {
    content: '›';
    position: absolute;
    left: 0;
    color: var(--color-cyan-400);
}

.program-cta {
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-cyan-400);
    transition: all var(--transition-base);
}

.program-cta:hover {
    color: var(--color-cyan-300);
    padding-left: var(--space-2);
}

/* ============================================
   INNOVATION LAB SECTION
   ============================================ */
.innovation-lab {
    padding: var(--space-24) 0;
    background: var(--color-midnight-900);
    position: relative;
}

.innovation-lab::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-cyan-400), transparent);
    opacity: 0.2;
}

.projects-showcase {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
}

.project-card {
    background: var(--color-midnight-800);
    border: 1px solid rgba(255, 255, 255, 0.06);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.project-card:hover {
    transform: translateY(-6px);
    border-color: rgba(34, 211, 238, 0.15);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.project-image {
    position: relative;
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.project-placeholder {
    width: 100%;
    height: 100%;
    background: var(--color-midnight-700);
}

.project-placeholder svg {
    width: 100%;
    height: 100%;
    padding: var(--space-6);
}

.project-overlay {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
}

.project-status {
    padding: var(--space-1) var(--space-3);
    font-family: var(--font-display);
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
    text-transform: uppercase;
}

.project-status:where(:not([class*="pilot"])) {
    background: rgba(34, 197, 94, 0.15);
    color: #4ade80;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.project-status:where([class*="pilot"], :contains("Pilot")) {
    background: rgba(234, 179, 8, 0.15);
    color: #facc15;
    border: 1px solid rgba(234, 179, 8, 0.3);
}

/* Fix for status colors */
.project-status {
    background: rgba(34, 197, 94, 0.15);
    color: #4ade80;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.project-card[data-project="4"] .project-status,
.project-card[data-project="6"] .project-status {
    background: rgba(234, 179, 8, 0.15);
    color: #facc15;
    border: 1px solid rgba(234, 179, 8, 0.3);
}

.project-info {
    padding: var(--space-6);
}

.project-info h3 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-silver-100);
    margin-bottom: var(--space-1);
}

.project-student {
    font-size: 0.8125rem;
    color: var(--color-cyan-400);
    margin-bottom: var(--space-3);
}

.project-info > p {
    font-size: 0.875rem;
    color: var(--color-silver-400);
    line-height: 1.6;
    margin-bottom: var(--space-4);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.tag {
    padding: var(--space-1) var(--space-3);
    background: rgba(34, 211, 238, 0.08);
    border: 1px solid rgba(34, 211, 238, 0.15);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    color: var(--color-cyan-300);
}

/* ============================================
   CONTACT SECTION
   ============================================ */
.contact {
    padding: var(--space-24) 0;
    position: relative;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
    align-items: start;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
    margin-top: var(--space-8);
    margin-bottom: var(--space-8);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.contact-item:hover {
    background: rgba(34, 211, 238, 0.05);
}

.contact-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(34, 211, 238, 0.08);
    border: 1px solid rgba(34, 211, 238, 0.15);
    border-radius: var(--radius-lg);
    color: var(--color-cyan-400);
    flex-shrink: 0;
}

.contact-icon svg {
    width: 20px;
    height: 20px;
}

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

.contact-label {
    font-size: 0.8125rem;
    color: var(--color-silver-500);
    margin-bottom: var(--space-1);
}

.contact-value {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-silver-200);
    line-height: 1.5;
}

.contact-social {
    display: flex;
    gap: var(--space-3);
}

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    color: var(--color-silver-400);
    transition: all var(--transition-base);
}

.social-link:hover {
    background: rgba(34, 211, 238, 0.1);
    border-color: var(--color-cyan-400);
    color: var(--color-cyan-400);
    transform: translateY(-2px);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.contact-form-container {
    padding: var(--space-8);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-group label {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-silver-300);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--space-3) var(--space-4);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    color: var(--color-silver-200);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-cyan-400);
    box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-silver-500);
}

.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='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
}

.form-group select option {
    background: var(--color-midnight-800);
    color: var(--color-silver-200);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-success {
    display: none;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-4);
    padding: var(--space-8);
}

.form-success.active {
    display: flex;
}

.success-icon {
    width: 64px;
    height: 64px;
    color: #4ade80;
}

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

.form-success h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--color-silver-100);
}

.form-success p {
    color: var(--color-silver-400);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    padding: var(--space-16) 0 var(--space-8);
    background: var(--color-midnight-800);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
}

.footer-desc {
    font-size: 0.9375rem;
    color: var(--color-silver-500);
    line-height: 1.7;
    max-width: 320px;
}

.footer-links h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-silver-200);
    margin-bottom: var(--space-4);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-links a {
    font-size: 0.9375rem;
    color: var(--color-silver-500);
    transition: color var(--transition-base);
}

.footer-links a:hover {
    color: var(--color-cyan-400);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-silver-500);
}

.footer-legal {
    display: flex;
    gap: var(--space-6);
}

.footer-legal a {
    font-size: 0.875rem;
    color: var(--color-silver-500);
    transition: color var(--transition-base);
}

.footer-legal a:hover {
    color: var(--color-cyan-400);
}

/* ============================================
   ANIMATIONS & SCROLL REVEAL
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-cta {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-image-section {
        grid-template-columns: 1fr;
    }
    
    .systems-showcase {
        grid-template-columns: 1fr;
    }
    
    .programs-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-showcase {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: rgba(2, 6, 23, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: calc(var(--space-20) + 20px) var(--space-8) var(--space-8);
        transition: right var(--transition-smooth);
        gap: var(--space-4);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-link {
        font-size: 1.125rem;
        padding: var(--space-3) 0;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-showcase {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-8);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
    
    .holographic-airport {
        width: 280px;
        height: 280px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-6);
        align-items: center;
    }
    
    .stat-item {
        text-align: center;
    }
    
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
@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;
    }
}

/* Focus styles for keyboard navigation */
a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--color-cyan-400);
    outline-offset: 2px;
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    #networkCanvas,
    .hero-visual,
    .scroll-indicator,
    .nav-toggle {
        display: none !important;
    }
    
    .navbar {
        position: static;
    }
    
    body {
        color: #000;
        background: #fff;
    }
}