/* ============================================
   INFINITY AI UNDERWATER ROBOTICS ACADEMY
   ============================================
   Production-ready CSS with:
   - CSS custom properties (variables)
   - Glassmorphism effects
   - Premium animations
   - Fully responsive design
   - Futuristic OceanTech aesthetic
   ============================================ */

/* ============================================
   1. CSS CUSTOM PROPERTIES
   ============================================ */
:root {
    /* Core Colors - Deep Ocean Palette */
    --color-deep: #020617;
    --color-navy-900: #0a1628;
    --color-navy-800: #0f1d32;
    --color-navy-700: #162744;
    --color-navy-600: #1e3a5f;
    --color-navy-500: #2a5a8a;
    
    /* Accent Colors - Cyan & Teal */
    --color-cyan-400: #22d3ee;
    --color-cyan-500: #06b6d4;
    --color-cyan-600: #0891b2;
    --color-teal-400: #2dd4bf;
    --color-teal-500: #14b8a6;
    
    /* Utility Colors */
    --color-white: #ffffff;
    --color-gray-100: #f1f5f9;
    --color-gray-300: #cbd5e1;
    --color-gray-400: #94a3b8;
    --color-gray-500: #64748b;
    --color-gray-600: #475569;
    --color-gray-700: #334155;
    
    /* Status Colors */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    
    /* Glassmorphism */
    --glass-bg: rgba(10, 22, 40, 0.7);
    --glass-bg-light: rgba(30, 58, 95, 0.25);
    --glass-border: rgba(34, 211, 238, 0.15);
    --glass-border-hover: rgba(34, 211, 238, 0.3);
    
    /* 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;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    --transition-slower: 600ms ease;
    
    /* Shadows */
    --shadow-glow: 0 0 20px rgba(34, 211, 238, 0.15);
    --shadow-glow-strong: 0 0 40px rgba(34, 211, 238, 0.25);
    --shadow-card: 0 4px 24px rgba(2, 6, 23, 0.4);
}

/* ============================================
   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-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-gray-300);
    background: var(--color-deep);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

/* ============================================
   3. UTILITY CLASSES
   ============================================ */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.text-accent {
    color: var(--color-cyan-400);
}

.section-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-cyan-400);
    margin-bottom: var(--space-4);
}

.section-tag::before {
    content: '';
    width: 24px;
    height: 2px;
    background: var(--color-cyan-400);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.15;
    color: var(--color-white);
    margin-bottom: var(--space-6);
}

/* ============================================
   4. BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-8);
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    border-radius: var(--radius-lg);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-cyan-500), var(--color-teal-500));
    color: var(--color-deep);
}

.btn-primary::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-cyan-400), var(--color-teal-400));
    opacity: 0;
    transition: opacity var(--transition-base);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow-strong);
}

.btn-primary:hover::before {
    opacity: 1;
}

.btn-primary .btn-text,
.btn-primary .btn-icon {
    position: relative;
    z-index: 1;
}

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

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

.btn-secondary {
    background: transparent;
    color: var(--color-cyan-400);
    border: 1.5px solid var(--color-cyan-500);
}

.btn-secondary:hover {
    background: rgba(34, 211, 238, 0.1);
    border-color: var(--color-cyan-400);
    box-shadow: var(--shadow-glow);
}

.btn-full {
    width: 100%;
}

/* ============================================
   5. NAVIGATION
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-4) 0;
    transition: all var(--transition-base);
}

.nav.scrolled {
    background: rgba(2, 6, 23, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
}

.nav-logo-icon {
    width: 36px;
    height: 36px;
    color: var(--color-cyan-400);
}

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

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

.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-gray-400);
    padding: var(--space-2) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--color-cyan-400), var(--color-teal-400));
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-white);
}

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

/* ============================================
   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-20);
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(6, 182, 212, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(20, 184, 166, 0.06) 0%, transparent 50%),
        linear-gradient(180deg, var(--color-navy-900) 0%, var(--color-deep) 100%);
}

.hero-bubbles {
    position: absolute;
    inset: 0;
    overflow: hidden;
    pointer-events: none;
}

.hero-radar {
    position: absolute;
    top: 50%;
    right: 10%;
    transform: translateY(-50%);
    width: 400px;
    height: 400px;
    opacity: 0.15;
    pointer-events: none;
}

.radar-ring {
    position: absolute;
    inset: 0;
    border: 1px solid var(--color-cyan-400);
    border-radius: 50%;
    animation: radarPulse 4s ease-out infinite;
}

.radar-ring:nth-child(2) {
    animation-delay: 1.3s;
}

.radar-ring:nth-child(3) {
    animation-delay: 2.6s;
}

.radar-sweep {
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: conic-gradient(from 0deg, transparent 0deg, var(--color-cyan-400) 5deg, transparent 10deg);
    animation: radarSweep 3s linear infinite;
}

@keyframes radarPulse {
    0% { transform: scale(0.3); opacity: 1; }
    100% { transform: scale(1); opacity: 0; }
}

@keyframes radarSweep {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    width: 100%;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background: var(--glass-bg-light);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    color: var(--color-cyan-400);
    margin-bottom: var(--space-6);
    backdrop-filter: blur(10px);
}

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

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

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    color: var(--color-white);
    margin-bottom: var(--space-6);
    max-width: 800px;
}

.hero-title-accent {
    background: linear-gradient(135deg, var(--color-cyan-400), var(--color-teal-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--color-gray-400);
    max-width: 560px;
    margin-bottom: var(--space-10);
    line-height: 1.7;
}

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

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

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

.hero-stat-value {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-cyan-400);
    line-height: 1;
}

.hero-stat-label {
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
}

.hero-scroll-text {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gray-600);
}

.hero-scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--color-cyan-400), transparent);
    animation: scrollLine 2s ease infinite;
}

@keyframes scrollLine {
    0% { transform: scaleY(0); transform-origin: top; }
    50% { transform: scaleY(1); transform-origin: top; }
    50.1% { transform-origin: bottom; }
    100% { transform: scaleY(0); transform-origin: bottom; }
}

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

.about-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, var(--color-deep) 0%, var(--color-navy-900) 50%, var(--color-deep) 100%);
}

.about-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(34, 211, 238, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(34, 211, 238, 0.03) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

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

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

.about-content {
    max-width: 560px;
}

.about-lead {
    font-size: 1.125rem;
    color: var(--color-white);
    line-height: 1.8;
    margin-bottom: var(--space-6);
}

.about-text {
    color: var(--color-gray-400);
    line-height: 1.8;
    margin-bottom: var(--space-10);
}

.about-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.about-feature {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-5);
    background: var(--glass-bg-light);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
}

.about-feature:hover {
    border-color: var(--glass-border-hover);
    transform: translateX(4px);
}

.about-feature-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(34, 211, 238, 0.1);
    border-radius: var(--radius-lg);
    color: var(--color-cyan-400);
    flex-shrink: 0;
}

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

.about-feature-content h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--space-1);
}

.about-feature-content p {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    line-height: 1.6;
}

.about-visual {
    position: relative;
}

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

.about-image {
    width: 100%;
    height: 600px;
    object-fit: cover;
}

.about-image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    gap: var(--space-6);
    padding: var(--space-6);
    background: linear-gradient(to top, rgba(2, 6, 23, 0.9), transparent);
}

.about-image-data {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.data-label {
    font-family: var(--font-heading);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gray-500);
}

.data-value {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-cyan-400);
}

.about-image-frame {
    position: absolute;
    inset: -2px;
    border: 2px solid var(--color-cyan-400);
    border-radius: var(--radius-2xl);
    opacity: 0.3;
    pointer-events: none;
}

.about-image-frame::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 20px;
    width: 40px;
    height: 40px;
    border-top: 2px solid var(--color-cyan-400);
    border-left: 2px solid var(--color-cyan-400);
}

.about-image-frame::after {
    content: '';
    position: absolute;
    bottom: 20px;
    right: 20px;
    width: 40px;
    height: 40px;
    border-bottom: 2px solid var(--color-cyan-400);
    border-right: 2px solid var(--color-cyan-400);
}

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

.programs-bg {
    position: absolute;
    inset: 0;
    background: var(--color-deep);
}

.programs-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.programs-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-16);
}

.programs-intro {
    font-size: 1.0625rem;
    color: var(--color-gray-400);
    line-height: 1.7;
}

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

.program-card {
    position: relative;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    overflow: hidden;
    transition: all var(--transition-slow);
    cursor: pointer;
}

.program-card-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.05), rgba(20, 184, 166, 0.05));
    opacity: 0;
    transition: opacity var(--transition-slow);
}

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

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

.program-card-glow {
    position: absolute;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.15), transparent 70%);
    pointer-events: none;
    opacity: 0;
    transition: opacity var(--transition-slow);
    transform: translate(-50%, -50%);
}

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

.program-card-content {
    position: relative;
    z-index: 2;
}

.program-card-number {
    position: absolute;
    top: var(--space-6);
    right: var(--space-6);
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--color-cyan-400);
    opacity: 0.5;
}

.program-card-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--space-6);
    color: var(--color-cyan-400);
}

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

.program-card-title {
    font-family: var(--font-display);
    font-size: 1.375rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--space-3);
}

.program-card-desc {
    font-size: 0.9375rem;
    color: var(--color-gray-400);
    line-height: 1.7;
    margin-bottom: var(--space-6);
}

.program-card-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    margin-bottom: var(--space-8);
}

.program-card-details li {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.875rem;
    color: var(--color-gray-500);
}

.program-card-details li::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--color-teal-400);
    border-radius: 50%;
    flex-shrink: 0;
}

.program-card-meta {
    display: flex;
    gap: var(--space-4);
    padding-top: var(--space-6);
    border-top: 1px solid var(--glass-border);
}

.program-card-duration,
.program-card-level {
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.program-card-duration {
    color: var(--color-cyan-400);
}

.program-card-level {
    color: var(--color-teal-400);
}

/* ============================================
   9. OCEAN ROBOTICS LAB SECTION
   ============================================ */
.lab {
    position: relative;
    padding: var(--space-24) 0;
    overflow: hidden;
}

.lab-bg {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, var(--color-deep) 0%, var(--color-navy-800) 30%, var(--color-navy-900) 70%, var(--color-deep) 100%);
}

.lab-grid-bg {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(34, 211, 238, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(34, 211, 238, 0.02) 1px, transparent 1px);
    background-size: 40px 40px;
}

.lab-header {
    text-align: center;
    max-width: 640px;
    margin: 0 auto var(--space-16);
}

.lab-intro {
    font-size: 1.0625rem;
    color: var(--color-gray-400);
    line-height: 1.7;
}

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

.lab-project {
    position: relative;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    transition: all var(--transition-slow);
}

.lab-project:hover {
    border-color: var(--glass-border-hover);
    transform: translateY(-6px) scale(1.01);
    box-shadow: var(--shadow-card), var(--shadow-glow);
}

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

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

.lab-project:hover .lab-project-image img {
    transform: scale(1.08);
}

.lab-project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(2, 6, 23, 0.8), transparent 60%);
    display: flex;
    align-items: flex-end;
    padding: var(--space-4);
}

.lab-project-status {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: pulse 2s ease infinite;
}

.status-active {
    background: var(--color-success);
}

.status-planning {
    background: var(--color-warning);
}

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

.lab-project-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-3);
}

.lab-project-category {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-cyan-400);
    padding: var(--space-1) var(--space-3);
    background: rgba(34, 211, 238, 0.1);
    border-radius: 100px;
}

.lab-project-year {
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: var(--color-gray-600);
}

.lab-project-title {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--space-3);
}

.lab-project-desc {
    font-size: 0.875rem;
    color: var(--color-gray-400);
    line-height: 1.7;
    margin-bottom: var(--space-6);
}

.lab-project-specs {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-3);
    padding: var(--space-4);
    background: rgba(15, 29, 50, 0.5);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-6);
}

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

.spec-label {
    font-family: var(--font-heading);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-600);
}

.spec-value {
    font-family: var(--font-display);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-cyan-400);
}

.lab-project-team {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.team-avatars {
    display: flex;
}

.team-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 2px solid var(--color-navy-800);
    margin-left: -8px;
    object-fit: cover;
}

.team-avatar:first-child {
    margin-left: 0;
}

.team-count {
    font-size: 0.8125rem;
    color: var(--color-gray-500);
}

.lab-project-scanline {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-cyan-400), transparent);
    opacity: 0;
    animation: scanline 4s ease infinite;
    pointer-events: none;
}

.lab-project:hover .lab-project-scanline {
    opacity: 0.6;
}

@keyframes scanline {
    0% { transform: translateY(0); }
    100% { transform: translateY(600px); }
}

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

.contact-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse at 30% 50%, rgba(6, 182, 212, 0.06) 0%, transparent 50%),
        var(--color-deep);
}

.contact-radar {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    opacity: 0.08;
    pointer-events: none;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-16);
    align-items: start;
}

.contact-info {
    padding-top: var(--space-8);
}

.contact-lead {
    font-size: 1.0625rem;
    color: var(--color-gray-400);
    line-height: 1.7;
    margin-bottom: var(--space-10);
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-bottom: var(--space-10);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-5);
    background: var(--glass-bg-light);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
}

.contact-method:hover {
    border-color: var(--glass-border-hover);
    transform: translateX(4px);
    box-shadow: var(--shadow-glow);
}

.contact-method-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(34, 211, 238, 0.1);
    border-radius: var(--radius-lg);
    color: var(--color-cyan-400);
    flex-shrink: 0;
}

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

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

.contact-method-label {
    font-family: var(--font-heading);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-500);
}

.contact-method-value {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-white);
}

.contact-hours {
    padding: var(--space-6);
    background: var(--glass-bg-light);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
}

.contact-hours h4 {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.hours-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.hours-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
}

.hours-row span:first-child {
    color: var(--color-gray-400);
}

.hours-row span:last-child {
    color: var(--color-cyan-400);
    font-family: var(--font-heading);
    font-weight: 500;
}

/* Contact Form */
.contact-form-container {
    position: relative;
}

.contact-form {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-2xl);
    padding: var(--space-8);
    backdrop-filter: blur(20px);
}

.form-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-8);
}

.form-header h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
}

.form-signal {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-heading);
    font-size: 0.75rem;
    color: var(--color-success);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.form-group {
    position: relative;
    margin-bottom: var(--space-6);
}

.form-label {
    display: block;
    font-family: var(--font-heading);
    font-size: 0.8125rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-500);
    margin-bottom: var(--space-2);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--space-4) var(--space-5);
    background: rgba(15, 29, 50, 0.5);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    color: var(--color-white);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    transition: all var(--transition-base);
    outline: none;
}

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

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--color-cyan-400);
    box-shadow: 0 0 0 3px rgba(34, 211, 238, 0.1);
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%2322d3ee' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 18px;
    padding-right: var(--space-12);
}

.form-select option {
    background: var(--color-navy-800);
    color: var(--color-white);
}

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

.form-input-glow {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-cyan-400), transparent);
    transition: width var(--transition-slow);
    pointer-events: none;
}

.form-input:focus ~ .form-input-glow,
.form-select:focus ~ .form-input-glow,
.form-textarea:focus ~ .form-input-glow {
    width: 80%;
}

.form-status {
    margin-top: var(--space-4);
    padding: var(--space-4);
    border-radius: var(--radius-lg);
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 500;
    text-align: center;
    display: none;
}

.form-status.success {
    display: block;
    background: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.form-status.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* ============================================
   11. FOOTER
   ============================================ */
.footer {
    padding: var(--space-20) 0 var(--space-8);
    border-top: 1px solid var(--glass-border);
    background: var(--color-deep);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-12);
    margin-bottom: var(--space-16);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.footer-logo-icon {
    width: 32px;
    height: 32px;
    color: var(--color-cyan-400);
}

.footer-tagline {
    font-size: 0.9375rem;
    color: var(--color-gray-500);
    line-height: 1.7;
    max-width: 320px;
    margin-bottom: var(--space-6);
}

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

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass-bg-light);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    color: var(--color-gray-400);
    transition: all var(--transition-base);
}

.social-link:hover {
    color: var(--color-cyan-400);
    border-color: var(--glass-border-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

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

.footer-nav-title {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-white);
    margin-bottom: var(--space-5);
}

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

.footer-nav-list a {
    font-size: 0.9375rem;
    color: var(--color-gray-500);
    transition: color var(--transition-fast);
}

.footer-nav-list 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 var(--glass-border);
}

.footer-copyright {
    font-size: 0.8125rem;
    color: var(--color-gray-600);
}

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

.footer-legal a {
    font-size: 0.8125rem;
    color: var(--color-gray-600);
    transition: color var(--transition-fast);
}

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

/* ============================================
   12. ANIMATIONS & EFFECTS
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slower), transform var(--transition-slower);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Bubble Animation for Hero */
.bubble {
    position: absolute;
    border-radius: 50%;
    background: radial-gradient(circle at 30% 30%, rgba(34, 211, 238, 0.3), rgba(34, 211, 238, 0.05));
    animation: bubbleFloat linear infinite;
    pointer-events: none;
}

@keyframes bubbleFloat {
    0% {
        transform: translateY(100vh) scale(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 0.6;
    }
    100% {
        transform: translateY(-100px) scale(1);
        opacity: 0;
    }
}

/* Particle Animation */
.particle {
    position: absolute;
    width: 2px;
    height: 2px;
    background: var(--color-cyan-400);
    border-radius: 50%;
    pointer-events: none;
    animation: particleFloat linear infinite;
}

@keyframes particleFloat {
    0%, 100% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 0.5;
    }
}

/* ============================================
   13. RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
    .about-grid-layout {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }
    
    .about-visual {
        order: -1;
    }
    
    .about-image {
        height: 400px;
    }
    
    .programs-grid {
        grid-template-columns: 1fr;
    }
    
    .lab-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-12);
    }
    
    .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: 320px;
        height: 100vh;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: var(--space-8);
        background: rgba(2, 6, 23, 0.98);
        backdrop-filter: blur(20px);
        border-left: 1px solid var(--glass-border);
        transition: right var(--transition-slow);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-link {
        font-size: 1.125rem;
    }
    
    .hero-stats {
        gap: var(--space-8);
    }
    
    .hero-stat-value {
        font-size: 2rem;
    }
    
    .lab-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
        text-align: center;
    }
    
    .hero-radar,
    .contact-radar {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
    }
    
    .program-card {
        padding: var(--space-6);
    }
    
    .about-image {
        height: 300px;
    }
    
    .lab-project-specs {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   14. 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;
}

/* ============================================
   15. PRINT STYLES
   ============================================ */
@media print {
    .nav,
    .hero-bg,
    .about-bg,
    .programs-bg,
    .lab-bg,
    .contact-bg,
    .hero-scroll,
    .hero-radar,
    .contact-radar {
        display: none !important;
    }
    
    .hero {
        min-height: auto;
        padding: var(--space-8) 0;
    }
    
    body {
        color: #000;
        background: #fff;
    }
    
    .section-title {
        color: #000;
    }
}