/* ============================================
   QUANTUM AI AUTONOMOUS PORT ACADEMY
   Premium Stylesheet
   ============================================ */

/* ------------------------------------------
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ------------------------------------------ */
:root {
    /* Ocean & Graphite Color System */
    --color-ocean-50: #f0f9ff;
    --color-ocean-100: #e0f2fe;
    --color-ocean-200: #bae6fd;
    --color-ocean-300: #7dd3fc;
    --color-ocean-400: #38bdf8;
    --color-ocean-500: #0ea5e9;
    --color-ocean-600: #0284c7;
    --color-ocean-700: #0369a1;
    --color-ocean-800: #075985;
    --color-ocean-900: #0c4a6e;
    --color-ocean-950: #082f49;

    --color-graphite-50: #f8fafc;
    --color-graphite-100: #f1f5f9;
    --color-graphite-200: #e2e8f0;
    --color-graphite-300: #cbd5e1;
    --color-graphite-400: #94a3b8;
    --color-graphite-500: #64748b;
    --color-graphite-600: #475569;
    --color-graphite-700: #334155;
    --color-graphite-800: #1e293b;
    --color-graphite-900: #0f172a;
    --color-graphite-950: #020617;

    /* Accent Colors */
    --color-cyan: #00d4ff;
    --color-teal: #14b8a6;
    --color-amber: #f59e0b;
    --color-emerald: #10b981;
    --color-rose: #f43f5e;

    /* Gradients */
    --gradient-ocean: linear-gradient(135deg, var(--color-ocean-900) 0%, var(--color-graphite-900) 100%);
    --gradient-ocean-light: linear-gradient(135deg, var(--color-ocean-800) 0%, var(--color-graphite-800) 100%);
    --gradient-cyan: linear-gradient(135deg, var(--color-cyan) 0%, var(--color-ocean-500) 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Space Grotesk', var(--font-primary);
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    --text-7xl: 4.5rem;

    /* Spacing */
    --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;

    /* Layout */
    --container-max: 1280px;
    --container-padding: var(--space-6);

    /* Effects */
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
    --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.15);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
}

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

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

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-graphite-200);
    background-color: var(--color-graphite-950);
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, textarea, select {
    font-family: inherit;
    font-size: inherit;
}

address {
    font-style: normal;
}

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

.glass {
    background: var(--gradient-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255,255,255,0.1);
}

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

.section-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-cyan);
    margin-bottom: var(--space-4);
}

.section-title {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-graphite-50);
}

/* ------------------------------------------
   4. BUTTONS
   ------------------------------------------ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-6);
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-cyan);
    color: var(--color-graphite-950);
    box-shadow: 0 4px 14px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.4);
}

.btn-secondary {
    background: rgba(255,255,255,0.1);
    color: var(--color-graphite-100);
    border: 1px solid rgba(255,255,255,0.2);
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.15);
    border-color: rgba(255,255,255,0.3);
}

.btn-icon {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-base);
}

.btn:hover .btn-icon {
    transform: translateX(2px);
}

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

/* ------------------------------------------
   5. NAVIGATION
   ------------------------------------------ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    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(255,255,255,0.05);
    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);
    color: var(--color-graphite-50);
}

.logo-icon {
    width: 36px;
    height: 36px;
    color: var(--color-cyan);
}

.logo-text {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
    letter-spacing: -0.02em;
}

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

.nav-link {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-graphite-300);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-cyan);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--color-graphite-50);
}

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

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

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-graphite-50);
    transition: all var(--transition-base);
}

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

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.ocean-gradient {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 30%, rgba(102, 126, 234, 0.06) 0%, transparent 50%),
        var(--gradient-ocean);
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}

.floating-elements {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.float-el {
    position: absolute;
    border-radius: var(--radius-full);
    background: radial-gradient(circle, var(--color-cyan) 0%, transparent 70%);
    opacity: 0.06;
    animation: float 8s ease-in-out infinite;
}

.float-1 {
    width: 400px;
    height: 400px;
    top: 10%;
    left: -100px;
    animation-delay: 0s;
}

.float-2 {
    width: 300px;
    height: 300px;
    top: 60%;
    right: -50px;
    animation-delay: -3s;
}

.float-3 {
    width: 200px;
    height: 200px;
    top: 30%;
    right: 20%;
    animation-delay: -5s;
}

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-30px) scale(1.05); }
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    width: 100%;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-full);
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-cyan);
    margin-bottom: var(--space-6);
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--color-cyan);
    border-radius: var(--radius-full);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-family: var(--font-display);
    font-size: var(--text-6xl);
    font-weight: 700;
    line-height: 1.1;
    color: var(--color-graphite-50);
    margin-bottom: var(--space-6);
    max-width: 700px;
}

.title-line {
    display: block;
}

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

.hero-description {
    font-size: var(--text-lg);
    color: var(--color-graphite-400);
    max-width: 540px;
    margin-bottom: var(--space-8);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-16);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: var(--space-12);
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.stat-number {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 700;
    color: var(--color-graphite-50);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--color-graphite-500);
}

.hero-visual {
    position: absolute;
    right: 5%;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1;
}

.port-hologram {
    position: relative;
    width: 400px;
    height: 400px;
}

.hologram-ring {
    position: absolute;
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-full);
    animation: ring-pulse 4s ease-in-out infinite;
}

.ring-1 {
    width: 300px;
    height: 300px;
    top: 50px;
    left: 50px;
}

.ring-2 {
    width: 240px;
    height: 240px;
    top: 80px;
    left: 80px;
    animation-delay: -1s;
}

.ring-3 {
    width: 180px;
    height: 180px;
    top: 110px;
    left: 110px;
    animation-delay: -2s;
}

@keyframes ring-pulse {
    0%, 100% { 
        transform: scale(1); 
        opacity: 0.3; 
    }
    50% { 
        transform: scale(1.05); 
        opacity: 0.6; 
    }
}

.crane-container {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
}

.crane-svg {
    width: 100%;
    height: 100%;
}

.crane-arm {
    stroke-dasharray: 200;
    stroke-dashoffset: 200;
    animation: draw 3s ease forwards;
}

.crane-cable {
    stroke-dasharray: 50;
    stroke-dashoffset: 50;
    animation: draw 2s ease 1s forwards;
}

.crane-container-box {
    opacity: 0;
    animation: fade-in 1s ease 2s forwards;
}

@keyframes draw {
    to { stroke-dashoffset: 0; }
}

@keyframes fade-in {
    to { opacity: 1; }
}

.ship-icon {
    position: absolute;
    bottom: 60px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    opacity: 0.6;
    animation: ship-float 3s ease-in-out infinite;
}

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

.scroll-indicator {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-graphite-500);
    font-size: var(--text-xs);
    animation: bounce 2s ease-in-out infinite;
}

.scroll-mouse {
    width: 20px;
    height: 30px;
    border: 1px solid var(--color-graphite-500);
    border-radius: var(--radius-full);
    position: relative;
}

.scroll-wheel {
    width: 4px;
    height: 6px;
    background: var(--color-graphite-500);
    border-radius: var(--radius-full);
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll-wheel 2s ease-in-out infinite;
}

@keyframes scroll-wheel {
    0%, 100% { opacity: 1; top: 6px; }
    50% { opacity: 0.3; top: 14px; }
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(-8px); }
}

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

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-6);
    margin-bottom: var(--space-20);
}

.about-card {
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    transition: all var(--transition-base);
}

.about-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
    border-color: rgba(0, 212, 255, 0.3);
}

.about-icon {
    width: 48px;
    height: 48px;
    color: var(--color-cyan);
    margin-bottom: var(--space-5);
}

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

.about-card h3 {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--color-graphite-50);
    margin-bottom: var(--space-3);
}

.about-card p {
    font-size: var(--text-sm);
    color: var(--color-graphite-400);
    line-height: 1.7;
}

.about-image-section {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-12);
    align-items: center;
}

.about-image-container {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
}

.about-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.image-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(2, 6, 23, 0.9) 0%, transparent 60%);
    display: flex;
    align-items: flex-end;
    padding: var(--space-8);
}

.overlay-stats {
    display: flex;
    gap: var(--space-8);
}

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

.overlay-number {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-cyan);
}

.overlay-label {
    font-size: var(--text-sm);
    color: var(--color-graphite-400);
}

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

.about-text .lead {
    font-size: var(--text-lg);
    color: var(--color-graphite-200);
    line-height: 1.7;
}

.about-text p {
    color: var(--color-graphite-400);
    line-height: 1.7;
}

.text-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--color-cyan);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: var(--text-sm);
    transition: gap var(--transition-base);
    margin-top: var(--space-2);
}

.text-link:hover {
    gap: var(--space-3);
}

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

/* ------------------------------------------
   8. SYSTEMS SECTION
   ------------------------------------------ */
.systems {
    padding: var(--space-24) 0;
    background: linear-gradient(to bottom, transparent, rgba(0, 212, 255, 0.02), transparent);
}

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

.systems-visual {
    position: relative;
    border-radius: var(--radius-2xl);
    overflow: hidden;
}

.systems-image {
    width: 100%;
    height: 500px;
    object-fit: cover;
}

.systems-overlay {
    position: absolute;
    inset: 0;
    background: rgba(2, 6, 23, 0.4);
}

.scan-line {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-cyan);
    box-shadow: 0 0 20px var(--color-cyan);
    animation: scan 4s ease-in-out infinite;
}

@keyframes scan {
    0%, 100% { top: 0; opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { top: 100%; opacity: 0; }
}

.data-points {
    position: absolute;
    inset: 0;
}

.data-point {
    position: absolute;
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.point-marker {
    width: 12px;
    height: 12px;
    background: var(--color-cyan);
    border-radius: var(--radius-full);
    box-shadow: 0 0 10px var(--color-cyan);
    animation: marker-pulse 2s ease-in-out infinite;
}

@keyframes marker-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.3); opacity: 0.7; }
}

.point-label {
    padding: var(--space-1) var(--space-3);
    background: rgba(0, 212, 255, 0.15);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-family: var(--font-display);
    color: var(--color-cyan);
    backdrop-filter: blur(4px);
}

.systems-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.system-item {
    display: flex;
    gap: var(--space-5);
    padding: var(--space-5) var(--space-6);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255,255,255,0.05);
    cursor: pointer;
    transition: all var(--transition-base);
}

.system-item:hover,
.system-item.active {
    background: rgba(0, 212, 255, 0.05);
    border-color: rgba(0, 212, 255, 0.2);
}

.system-number {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-cyan);
    opacity: 0.6;
}

.system-info h3 {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-graphite-50);
    margin-bottom: var(--space-1);
}

.system-info p {
    font-size: var(--text-sm);
    color: var(--color-graphite-500);
    line-height: 1.6;
}

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

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

.program-card {
    background: linear-gradient(145deg, rgba(255,255,255,0.03) 0%, rgba(255,255,255,0.01) 100%);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.program-card:hover {
    transform: translateY(-4px);
    border-color: rgba(0, 212, 255, 0.2);
    box-shadow: var(--shadow-glow);
}

.program-card.featured {
    border-color: rgba(0, 212, 255, 0.3);
    background: linear-gradient(145deg, rgba(0, 212, 255, 0.05) 0%, rgba(255,255,255,0.01) 100%);
}

.program-image {
    position: relative;
    height: 220px;
    overflow: hidden;
}

.program-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.program-card:hover .program-image img {
    transform: scale(1.05);
}

.program-content {
    padding: var(--space-6);
}

.program-badge {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-sm);
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-cyan);
    margin-bottom: var(--space-3);
}

.program-content h3 {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-graphite-50);
    margin-bottom: var(--space-3);
}

.program-content > p {
    color: var(--color-graphite-400);
    font-size: var(--text-sm);
    line-height: 1.7;
    margin-bottom: var(--space-4);
}

.program-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: var(--space-5);
}

.program-features li {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--text-sm);
    color: var(--color-graphite-300);
}

.program-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-cyan);
    border-radius: var(--radius-full);
    flex-shrink: 0;
}

.program-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-cyan);
    transition: gap var(--transition-base);
}

.program-link:hover {
    gap: var(--space-3);
}

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

/* ------------------------------------------
   10. INNOVATION LAB SECTION
   ------------------------------------------ */
.lab {
    padding: var(--space-24) 0;
    background: linear-gradient(to bottom, transparent, rgba(0, 212, 255, 0.02), transparent);
}

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

.concept-card {
    background: linear-gradient(145deg, rgba(255,255,255,0.03) 0%, rgba(255,255,255,0.01) 100%);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

.concept-card:hover {
    transform: translateY(-6px);
    border-color: rgba(0, 212, 255, 0.2);
    box-shadow: var(--shadow-glow);
}

.concept-image {
    height: 200px;
    overflow: hidden;
}

.concept-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.concept-card:hover .concept-image img {
    transform: scale(1.08);
}

.concept-content {
    padding: var(--space-5);
}

.concept-category {
    display: inline-block;
    padding: var(--space-1) var(--space-3);
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-cyan);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-3);
}

.concept-content h3 {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-graphite-50);
    margin-bottom: var(--space-2);
}

.concept-content > p {
    font-size: var(--text-sm);
    color: var(--color-graphite-400);
    line-height: 1.7;
    margin-bottom: var(--space-4);
}

.concept-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-4);
    border-top: 1px solid rgba(255,255,255,0.05);
}

.concept-author {
    font-size: var(--text-xs);
    color: var(--color-graphite-500);
}

.concept-status {
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    font-weight: 600;
}

.concept-status:where(:contains("Pilot Ready")) {
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-emerald);
}

.concept-status:contains("In Testing") {
    background: rgba(245, 158, 11, 0.1);
    color: var(--color-amber);
}

.concept-status:contains("Research Phase") {
    background: rgba(0, 212, 255, 0.1);
    color: var(--color-cyan);
}

.concept-status:contains("Deployed") {
    background: rgba(102, 126, 234, 0.1);
    color: #667eea;
}

/* Status colors using attribute for broader compatibility */
.concept-status {
    background: rgba(0, 212, 255, 0.1);
    color: var(--color-cyan);
}

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

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-8);
}

.contact-info {
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
}

.contact-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-lg);
    color: var(--color-cyan);
    flex-shrink: 0;
}

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

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.contact-label {
    font-size: var(--text-xs);
    color: var(--color-graphite-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-details a,
.contact-details address {
    color: var(--color-graphite-200);
    font-size: var(--text-sm);
    transition: color var(--transition-fast);
}

.contact-details a:hover {
    color: var(--color-cyan);
}

.contact-map {
    position: relative;
    margin-top: var(--space-4);
    border-radius: var(--radius-xl);
    overflow: hidden;
    height: 200px;
}

.map-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.map-pin {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-cyan);
}

.map-pin svg {
    width: 32px;
    height: 32px;
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.5));
    animation: pin-bounce 2s ease-in-out infinite;
}

@keyframes pin-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.contact-form-container {
    padding: var(--space-8);
    border-radius: var(--radius-2xl);
}

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

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

.form-group label {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-graphite-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-graphite-100);
    font-size: var(--text-sm);
    transition: all var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-cyan);
    background: rgba(0, 212, 255, 0.03);
    box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-graphite-600);
}

.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 16px center;
}

.form-group select option {
    background: var(--color-graphite-900);
    color: var(--color-graphite-100);
}

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

/* ------------------------------------------
   12. FOOTER
   ------------------------------------------ */
.footer {
    padding: var(--space-16) 0 var(--space-8);
    border-top: 1px solid rgba(255,255,255,0.05);
}

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

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-graphite-50);
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 700;
}

.footer-logo .logo-icon {
    width: 32px;
    height: 32px;
    color: var(--color-cyan);
}

.footer-brand p {
    font-size: var(--text-sm);
    color: var(--color-graphite-500);
    line-height: 1.7;
    max-width: 320px;
}

.footer-social {
    display: flex;
    gap: var(--space-3);
    margin-top: var(--space-2);
}

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.05);
    border-radius: var(--radius-lg);
    color: var(--color-graphite-400);
    transition: all var(--transition-base);
}

.footer-social a:hover {
    background: rgba(0, 212, 255, 0.1);
    color: var(--color-cyan);
    transform: translateY(-2px);
}

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

.footer-links h4 {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-graphite-200);
    margin-bottom: var(--space-4);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.footer-links a {
    font-size: var(--text-sm);
    color: var(--color-graphite-500);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-8);
    border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-bottom p {
    font-size: var(--text-sm);
    color: var(--color-graphite-600);
}

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

.footer-legal a {
    font-size: var(--text-sm);
    color: var(--color-graphite-500);
    transition: color var(--transition-fast);
}

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

/* ------------------------------------------
   13. RESPONSIVE DESIGN
   ------------------------------------------ */
@media (max-width: 1200px) {
    .hero-visual {
        display: none;
    }
    
    .hero-content {
        text-align: center;
    }
    
    .hero-title {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-description {
        margin-left: auto;
        margin-right: auto;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
}

@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-image-section {
        grid-template-columns: 1fr;
    }
    
    .systems-showcase {
        grid-template-columns: 1fr;
    }
    
    .systems-visual {
        order: -1;
    }
    
    .lab-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --text-6xl: 2.5rem;
        --text-5xl: 2rem;
        --text-4xl: 1.75rem;
        --container-padding: var(--space-4);
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(2, 6, 23, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: calc(var(--space-20) + 40px) var(--space-8) var(--space-8);
        gap: var(--space-4);
        transition: right var(--transition-base);
        border-left: 1px solid rgba(255,255,255,0.05);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-link {
        font-size: var(--text-lg);
        padding: var(--space-3) 0;
    }
    
    .hero {
        padding: calc(var(--space-20) + 40px) 0 var(--space-16);
    }
    
    .hero-title {
        font-size: var(--text-4xl);
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-6);
        align-items: center;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .programs-grid {
        grid-template-columns: 1fr;
    }
    
    .lab-grid {
        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;
    }
    
    .footer-legal {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .about-image {
        height: 280px;
    }
    
    .systems-image {
        height: 300px;
    }
}

/* ------------------------------------------
   14. ANIMATIONS & EFFECTS
   ------------------------------------------ */
@keyframes fade-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

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

::-webkit-scrollbar-track {
    background: var(--color-graphite-950);
}

::-webkit-scrollbar-thumb {
    background: var(--color-graphite-700);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-graphite-600);
}

/* Selection */
::selection {
    background: rgba(0, 212, 255, 0.3);
    color: var(--color-graphite-50);
}