/* ============================================
   INFINITY AI ACADEMY — STYLES
   ============================================ */

/* ------------------------------------------
   1. CSS CUSTOM PROPERTIES (Design Tokens)
   ------------------------------------------ */
:root {
    /* Colors */
    --color-bg-primary: #020617;
    --color-bg-secondary: #0f172a;
    --color-bg-tertiary: #1e293b;
    --color-surface: rgba(15, 23, 42, 0.6);
    --color-border: rgba(96, 165, 250, 0.15);
    --color-border-hover: rgba(96, 165, 250, 0.3);
    
    /* Accent Colors */
    --color-accent-blue: #60a5fa;
    --color-accent-cyan: #22d3ee;
    --color-accent-sky: #0ea5e9;
    --color-accent-navy: #0c4a6e;
    
    /* Text Colors */
    --color-text-primary: #f8fafc;
    --color-text-secondary: #cbd5e1;
    --color-text-muted: #94a3b8;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #0c4a6e 0%, #0284c7 50%, #22d3ee 100%);
    --gradient-hero: linear-gradient(180deg, rgba(2, 6, 23, 0) 0%, #020617 100%);
    --gradient-glass: linear-gradient(135deg, rgba(96, 165, 250, 0.1) 0%, rgba(34, 211, 238, 0.05) 100%);
    
    /* Typography */
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2.5rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
    --space-3xl: 8rem;
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    
    /* Shadows */
    --shadow-glow: 0 0 40px rgba(96, 165, 250, 0.15);
    --shadow-glow-strong: 0 0 60px rgba(96, 165, 250, 0.25);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index */
    --z-canvas: 0;
    --z-content: 1;
    --z-nav: 100;
    --z-modal: 200;
}

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

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

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

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

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

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

/* ------------------------------------------
   4. UTILITY CLASSES
   ------------------------------------------ */
.glass {
    background: var(--gradient-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.section-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

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

.section-tag::before {
    content: '';
    display: inline-block;
    width: 24px;
    height: 1px;
    background: var(--color-accent-cyan);
    vertical-align: middle;
    margin-right: var(--space-xs);
    opacity: 0.5;
}

.section-tag::after {
    content: '';
    display: inline-block;
    width: 24px;
    height: 1px;
    background: var(--color-accent-cyan);
    vertical-align: middle;
    margin-left: var(--space-xs);
    opacity: 0.5;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 5vw, 3rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
}

.section-desc {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: var(--space-sm) auto 0;
}

/* ------------------------------------------
   5. NAVIGATION
   ------------------------------------------ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-nav);
    padding: var(--space-sm) 0;
    transition: background var(--transition-base), box-shadow var(--transition-base);
}

.nav.scrolled {
    background: rgba(2, 6, 23, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

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

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

.logo-icon {
    width: 36px;
    height: 36px;
}

.logo-text {
    color: var(--color-text-primary);
}

.logo-accent {
    color: var(--color-accent-blue);
}

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

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

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

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--gradient-primary);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--color-text-primary);
}

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

/* ------------------------------------------
   6. HERO SECTION
   ------------------------------------------ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding: calc(var(--space-3xl) + 60px) 0 var(--space-2xl);
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(12, 74, 110, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(34, 211, 238, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: var(--z-content);
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-md);
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-display);
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-accent-cyan);
    margin-bottom: var(--space-md);
    padding: var(--space-xs) var(--space-sm);
    background: rgba(34, 211, 238, 0.08);
    border: 1px solid rgba(34, 211, 238, 0.2);
    border-radius: 100px;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--color-accent-cyan);
    border-radius: 50%;
    animation: pulse-dot 2s ease-in-out infinite;
}

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

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

.title-line {
    display: block;
}

.title-line.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-text-secondary);
    max-width: 520px;
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-glow);
}

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

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

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

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

.btn-secondary:hover {
    border-color: var(--color-accent-blue);
    background: rgba(96, 165, 250, 0.08);
}

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

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-accent-blue);
    line-height: 1;
}

.stat-suffix {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent-blue);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

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

.hologram-container {
    position: relative;
    width: 320px;
    height: 320px;
}

.hologram-ring {
    position: absolute;
    border: 1px solid;
    border-radius: 50%;
    animation: ring-rotate 20s linear infinite;
}

.ring-1 {
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    border-color: rgba(96, 165, 250, 0.2);
    animation-duration: 30s;
}

.ring-2 {
    width: 70%;
    height: 70%;
    top: 15%;
    left: 15%;
    border-color: rgba(34, 211, 238, 0.15);
    animation-direction: reverse;
    animation-duration: 20s;
}

.ring-3 {
    width: 40%;
    height: 40%;
    top: 30%;
    left: 30%;
    border-color: rgba(96, 165, 250, 0.1);
    animation-duration: 15s;
}

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

.hologram-plane {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    animation: plane-float 4s ease-in-out infinite;
}

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

.hologram-scan {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 200px;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-accent-cyan), transparent);
    animation: scan-line 3s ease-in-out infinite;
    opacity: 0.5;
}

@keyframes scan-line {
    0%, 100% { opacity: 0; transform: translateX(-50%) scaleX(0.5); }
    50% { opacity: 0.8; transform: translateX(-50%) scaleX(1); }
}

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

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

.scroll-mouse {
    width: 24px;
    height: 36px;
    border: 1px solid var(--color-border-hover);
    border-radius: 12px;
    position: relative;
}

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

@keyframes scroll-wheel {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0.3; transform: translateX(-50%) translateY(8px); }
}

.scroll-text {
    font-family: var(--font-display);
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--color-text-muted);
}

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

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr) 1.5fr;
    gap: var(--space-md);
    align-items: stretch;
}

.about-card {
    padding: var(--space-lg);
    transition: all var(--transition-base);
}

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

.card-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-md);
}

.card-icon svg {
    width: 100%;
    height: 100%;
    stroke: var(--color-accent-blue);
}

.card-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--color-text-primary);
}

.card-text {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.about-image {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 280px;
}

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

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

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

.overlay-data {
    display: flex;
    align-items: baseline;
    gap: var(--space-xs);
}

.data-value {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-accent-cyan);
}

.data-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ------------------------------------------
   8. SYSTEMS SECTION
   ------------------------------------------ */
.systems {
    padding: var(--space-3xl) 0;
    background: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 50%, var(--color-bg-primary) 100%);
}

.systems-showcase {
    display: grid;
    gap: var(--space-lg);
}

.showcase-main {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--space-lg);
    padding: var(--space-lg);
    overflow: hidden;
}

.showcase-visual {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    min-height: 300px;
}

.showcase-visual img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.visual-hud {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.hud-element {
    background: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(10px);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.hud-label {
    font-family: var(--font-display);
    font-size: 0.5625rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.hud-value {
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: var(--color-accent-cyan);
    font-weight: 600;
}

.hud-value.active {
    color: #4ade80;
}

.showcase-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

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

.showcase-text {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.7;
}

.showcase-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.showcase-features li {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
}

.feature-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent-blue);
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: 0 0 10px rgba(96, 165, 250, 0.5);
}

.systems-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
}

.system-card {
    padding: var(--space-lg);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.system-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-4px);
}

.system-pulse {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    width: 8px;
    height: 8px;
    background: #4ade80;
    border-radius: 50%;
    animation: system-pulse 2s ease-in-out infinite;
}

@keyframes system-pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.4); }
    50% { opacity: 0.8; box-shadow: 0 0 0 8px rgba(74, 222, 128, 0); }
}

.system-name {
    font-family: var(--font-display);
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    padding-right: var(--space-lg);
}

.system-desc {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    line-height: 1.6;
}

/* ------------------------------------------
   9. PROGRAMS SECTION
   ------------------------------------------ */
.programs {
    padding: var(--space-3xl) 0;
}

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

.program-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
}

.program-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition-slow);
}

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

.program-card:hover::before {
    transform: scaleX(1);
}

.program-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-md);
}

.program-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 800;
    color: rgba(96, 165, 250, 0.1);
    line-height: 1;
}

.program-icon {
    width: 48px;
    height: 48px;
    color: var(--color-accent-blue);
}

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

.program-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.program-desc {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.program-meta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.meta-item svg {
    width: 14px;
    height: 14px;
}

.program-progress {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.progress-bar {
    flex: 1;
    height: 3px;
    background: var(--color-bg-tertiary);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: 2px;
    transition: width 1.5s ease;
}

.progress-text {
    font-family: var(--font-display);
    font-size: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-accent-cyan);
    white-space: nowrap;
}

/* ------------------------------------------
   10. LAB SECTION
   ------------------------------------------ */
.lab {
    padding: var(--space-3xl) 0;
    background: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 50%, var(--color-bg-primary) 100%);
}

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

.project-card {
    overflow: hidden;
    transition: all var(--transition-base);
}

.project-card:hover {
    border-color: var(--color-border-hover);
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow-strong);
}

.project-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

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

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

.project-overlay {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
}

.project-status {
    font-family: var(--font-display);
    font-size: 0.5625rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    padding: 4px 10px;
    background: rgba(74, 222, 128, 0.15);
    color: #4ade80;
    border: 1px solid rgba(74, 222, 128, 0.3);
    border-radius: 100px;
}

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

.project-title {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.project-desc {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-sm);
}

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

.tag {
    font-size: 0.6875rem;
    padding: 4px 10px;
    background: rgba(96, 165, 250, 0.1);
    color: var(--color-accent-blue);
    border: 1px solid var(--color-border);
    border-radius: 100px;
}

/* ------------------------------------------
   11. CONTACTS SECTION
   ------------------------------------------ */
.contacts {
    padding: var(--space-3xl) 0;
}

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

.contacts-info .section-tag {
    text-align: left;
}

.contacts-info .section-tag::before,
.contacts-info .section-tag::after {
    display: none;
}

.contacts-info .section-title {
    text-align: left;
    margin-bottom: var(--space-sm);
}

.contacts-desc {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

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

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

.contact-item:hover {
    background: rgba(96, 165, 250, 0.05);
}

.contact-icon {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(96, 165, 250, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-accent-blue);
    flex-shrink: 0;
}

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

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.contact-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.contact-value {
    font-size: 0.9375rem;
    color: var(--color-text-primary);
    font-weight: 500;
    line-height: 1.5;
}

.contacts-map {
    height: 400px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.contacts-map iframe {
    width: 100%;
    height: 100%;
    border: none;
    filter: grayscale(100%) invert(92%) hue-rotate(180deg) contrast(1.2);
}

/* ------------------------------------------
   12. FOOTER
   ------------------------------------------ */
.footer {
    padding: var(--space-2xl) 0 var(--space-lg);
    border-top: 1px solid var(--color-border);
}

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.footer-main {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.footer-brand {
    max-width: 320px;
}

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

.footer-desc {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

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

.footer-heading {
    font-family: var(--font-display);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

.footer-column ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-column a {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-base);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
    flex-wrap: wrap;
    gap: var(--space-sm);
}

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

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

.footer-legal a {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    transition: color var(--transition-base);
}

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

/* ------------------------------------------
   13. ANIMATIONS & REVEAL EFFECTS
   ------------------------------------------ */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

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

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

/* ------------------------------------------
   14. 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 {
        grid-column: 1 / -1;
    }
    
    .showcase-main {
        grid-template-columns: 1fr;
    }
    
    .systems-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contacts-grid {
        grid-template-columns: 1fr;
    }
    
    .contacts-map {
        height: 300px;
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 60px;
        left: 0;
        right: 0;
        background: rgba(2, 6, 23, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--space-lg);
        gap: 0;
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all var(--transition-base);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }
    
    .nav-menu li {
        border-bottom: 1px solid var(--color-border);
    }
    
    .nav-link {
        display: block;
        padding: var(--space-sm) 0;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
        align-items: center;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .programs-grid,
    .lab-grid,
    .systems-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-legal {
        flex-direction: column;
        gap: var(--space-sm);
    }
}

@media (max-width: 480px) {
    :root {
        --space-md: 1rem;
        --space-lg: 1.5rem;
        --space-xl: 2rem;
        --space-2xl: 3rem;
        --space-3xl: 4rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .program-header {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .program-meta {
        flex-direction: column;
        gap: var(--space-xs);
    }
}

/* ------------------------------------------
   15. REDUCED MOTION
   ------------------------------------------ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    .reveal {
        opacity: 1;
        transform: none;
    }
}