/* ============================================
   VERTEX AI ACADEMY — GLOBAL STYLES
   ============================================ */

/* CSS Custom Properties */
:root {
    /* Color System */
    --color-bg-primary: #0a0e17;
    --color-bg-secondary: #0f1623;
    --color-bg-tertiary: #151d2e;
    --color-surface: rgba(255, 255, 255, 0.03);
    
    /* Accent Colors */
    --color-accent-primary: #00d4aa;
    --color-accent-secondary: #00a8e8;
    --color-accent-tertiary: #7b61ff;
    
    /* Text Colors */
    --color-text-primary: #f0f4f8;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00d4aa 0%, #00a8e8 50%, #7b61ff 100%);
    --gradient-dark: linear-gradient(180deg, #0a0e17 0%, #0f1623 100%);
    --gradient-glass: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.05) 100%);
    
    /* Typography */
    --font-display: 'Orbitron', monospace;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 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: 10rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    /* Shadows */
    --shadow-glow: 0 0 40px rgba(0, 212, 170, 0.15);
    --shadow-glow-blue: 0 0 40px rgba(0, 168, 232, 0.15);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Z-index Scale */
    --z-base: 1;
    --z-above: 10;
    --z-nav: 100;
    --z-modal: 1000;
}

/* Reset & Base */
*, *::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: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Selection */
::selection {
    background: rgba(0, 212, 170, 0.3);
    color: var(--color-text-primary);
}

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

::-webkit-scrollbar-track {
    background: var(--color-bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--color-accent-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-accent-secondary);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */

.glass {
    background: var(--gradient-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.08);
}

.glass-dark {
    background: rgba(10, 14, 23, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

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

/* ============================================
   NAVIGATION
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-nav);
    padding: var(--space-md) 0;
    transition: var(--transition-base);
}

.navbar.scrolled {
    background: rgba(10, 14, 23, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    text-decoration: none;
    color: var(--color-text-primary);
}

.logo-icon {
    font-size: 1.75rem;
    color: var(--color-accent-primary);
    line-height: 1;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

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

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

.nav-link {
    position: relative;
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    font-weight: 500;
    padding: var(--space-xs) 0;
    transition: var(--transition-fast);
}

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

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

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

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

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

/* ============================================
   HERO SECTION
   ============================================ */

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

.hero-canvas-container {
    position: absolute;
    inset: 0;
    z-index: var(--z-base);
}

#tunnelCanvas {
    width: 100%;
    height: 100%;
    display: block;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at center, transparent 0%, var(--color-bg-primary) 70%);
    z-index: calc(var(--z-base) + 1);
}

.hero-content {
    position: relative;
    z-index: calc(var(--z-base) + 2);
    max-width: 900px;
    padding: var(--space-xl);
    text-align: center;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid rgba(0, 212, 170, 0.2);
    border-radius: 100px;
    font-size: 0.875rem;
    color: var(--color-accent-primary);
    margin-bottom: var(--space-lg);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--color-accent-primary);
    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(2.5rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.02em;
}

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

.hero-cta {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--space-2xl);
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition-base);
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px rgba(0, 212, 170, 0.25);
}

.btn-arrow {
    width: 20px;
    height: 20px;
    transition: var(--transition-base);
}

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

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.3);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-2xl);
}

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

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text-muted);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    z-index: calc(var(--z-base) + 2);
}

.scroll-mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-text-muted);
    border-radius: 12px;
    position: relative;
}

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

@keyframes scroll-wheel {
    0%, 100% { top: 8px; opacity: 1; }
    50% { top: 20px; opacity: 0; }
}

/* ============================================
   SECTION COMMON STYLES
   ============================================ */

.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-3xl) var(--space-lg);
}

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

.section-header.light {
    color: var(--color-text-primary);
}

.section-tag {
    display: inline-block;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-md);
}

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

/* ============================================
   ABOUT SECTION
   ============================================ */

.about {
    background: var(--gradient-dark);
    position: relative;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

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

.about-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-glow);
}

.about-card.featured {
    background: var(--gradient-glass);
    border-color: rgba(0, 212, 170, 0.2);
}

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

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

.about-card h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.about-card p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
}

.about-visual {
    display: flex;
    justify-content: center;
    padding: var(--space-2xl) 0;
}

.visual-frame {
    width: 300px;
    height: 300px;
    position: relative;
}

.visual-hologram {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.holo-ring {
    position: absolute;
    border: 2px solid;
    border-radius: 50%;
    animation: holo-spin linear infinite;
}

.holo-ring.ring-1 {
    width: 280px;
    height: 280px;
    border-color: rgba(0, 212, 170, 0.3);
    animation-duration: 8s;
}

.holo-ring.ring-2 {
    width: 220px;
    height: 220px;
    border-color: rgba(0, 168, 232, 0.3);
    animation-duration: 12s;
    animation-direction: reverse;
}

.holo-ring.ring-3 {
    width: 160px;
    height: 160px;
    border-color: rgba(123, 97, 255, 0.3);
    animation-duration: 16s;
}

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

.holo-core {
    font-size: 4rem;
    color: var(--color-accent-primary);
    animation: holo-pulse 3s ease-in-out infinite;
}

@keyframes holo-pulse {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.1); }
}

/* ============================================
   PROGRAMS SECTION
   ============================================ */

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

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

.program-card {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background: var(--color-bg-tertiary);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    transition: var(--transition-base);
    cursor: pointer;
}

.program-card:hover {
    border-color: rgba(0, 212, 170, 0.3);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.program-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.program-number {
    position: absolute;
    top: 0;
    left: 0;
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 900;
    color: rgba(255, 255, 255, 0.03);
    line-height: 1;
}

.program-icon {
    font-size: 3rem;
    z-index: 1;
}

.program-content h3 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
}

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

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

.meta-item {
    padding: 4px 12px;
    background: rgba(0, 212, 170, 0.1);
    border-radius: 100px;
    font-size: 0.75rem;
    color: var(--color-accent-primary);
}

.program-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-accent-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: var(--transition-fast);
}

.program-link svg {
    width: 16px;
    height: 16px;
    transition: var(--transition-fast);
}

.program-link:hover svg {
    transform: translateX(4px);
}

/* ============================================
   SYSTEMS SECTION
   ============================================ */

.systems {
    background: linear-gradient(180deg, #0f1623 0%, #0a0e17 100%);
}

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

.system-panel {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.panel-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: rgba(255, 255, 255, 0.02);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.panel-dots {
    display: flex;
    gap: 6px;
}

.panel-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.panel-dots span:nth-child(1) { background: #ff5f57; }
.panel-dots span:nth-child(2) { background: #febc2e; }
.panel-dots span:nth-child(3) { background: #28c840; }

.panel-title {
    font-family: var(--font-display);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    flex: 1;
}

.panel-status {
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
}

.panel-status.online {
    background: rgba(40, 200, 64, 0.15);
    color: #28c840;
}

.panel-body {
    padding: var(--space-lg);
}

.metric-row {
    display: grid;
    grid-template-columns: 140px 1fr 80px;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
}

.metric-row:last-child {
    border-bottom: none;
}

.metric-name {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.metric-bar {
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    overflow: hidden;
}

.metric-fill {
    height: 100%;
    border-radius: 3px;
    background: var(--gradient-primary);
    transition: width 1s ease;
}

.metric-fill.warning {
    background: linear-gradient(90deg, #febc2e, #ff5f57);
}

.metric-value {
    font-family: var(--font-display);
    font-size: 0.875rem;
    color: var(--color-text-primary);
    text-align: right;
}

.geo-visualization {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.geo-layer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    position: relative;
    overflow: hidden;
}

.geo-layer::before {
    content: attr(data-depth);
    position: absolute;
    right: var(--space-md);
    top: 50%;
    transform: translateY(-50%);
    font-family: var(--font-display);
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.2);
}

.layer-1 { background: linear-gradient(90deg, rgba(0, 212, 170, 0.15), transparent); }
.layer-2 { background: linear-gradient(90deg, rgba(0, 168, 232, 0.15), transparent); }
.layer-3 { background: linear-gradient(90deg, rgba(123, 97, 255, 0.15), transparent); }
.layer-4 { background: linear-gradient(90deg, rgba(0, 212, 170, 0.1), transparent); }

.layer-label {
    font-size: 0.9375rem;
    color: var(--color-text-primary);
}

.layer-confidence {
    font-family: var(--font-display);
    font-size: 0.875rem;
    color: var(--color-accent-primary);
}

/* ============================================
   LABORATORY SECTION
   ============================================ */

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

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

.lab-project {
    background: var(--color-bg-tertiary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: var(--transition-base);
}

.lab-project:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

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

.project-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-bg-secondary), var(--color-bg-tertiary));
}

/* Tunnel Cross Section */
.tunnel-cross .cross-section {
    position: relative;
    width: 120px;
    height: 120px;
}

.tunnel-ring {
    position: absolute;
    inset: 0;
    border: 4px solid var(--color-accent-primary);
    border-radius: 50%;
    opacity: 0.6;
    animation: ring-expand 3s ease-in-out infinite;
}

.tunnel-inner {
    position: absolute;
    inset: 20px;
    border: 2px solid var(--color-accent-secondary);
    border-radius: 50%;
    opacity: 0.4;
    animation: ring-expand 3s ease-in-out infinite 0.5s;
}

@keyframes ring-expand {
    0%, 100% { transform: scale(1); opacity: 0.4; }
    50% { transform: scale(1.05); opacity: 0.8; }
}

/* Sensor Array */
.sensor-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.sensor-node {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(0, 212, 170, 0.2);
    animation: sensor-blink 2s ease-in-out infinite;
}

.sensor-node.active {
    background: var(--color-accent-primary);
    animation: sensor-blink 1s ease-in-out infinite;
}

.sensor-node:nth-child(2) { animation-delay: 0.2s; }
.sensor-node:nth-child(3) { animation-delay: 0.4s; }
.sensor-node:nth-child(4) { animation-delay: 0.6s; }
.sensor-node:nth-child(5) { animation-delay: 0.8s; }
.sensor-node:nth-child(6) { animation-delay: 1s; }

@keyframes sensor-blink {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* Drone Fleet */
.drone-formation {
    position: relative;
    width: 140px;
    height: 100px;
}

.drone {
    position: absolute;
    width: 36px;
    height: 36px;
    border: 2px solid var(--color-accent-primary);
    border-radius: 50%;
    animation: drone-hover 3s ease-in-out infinite;
}

.drone::before {
    content: '';
    position: absolute;
    inset: 6px;
    border: 1px solid var(--color-accent-secondary);
    border-radius: 50%;
}

.drone:nth-child(1) { left: 0; top: 30px; animation-delay: 0s; }
.drone:nth-child(2) { left: 52px; top: 0; animation-delay: 0.5s; }
.drone:nth-child(3) { left: 104px; top: 30px; animation-delay: 1s; }

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

/* Neural Net */
.net-visualization {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.net-layer {
    display: flex;
    gap: 16px;
}

.net-node {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: rgba(0, 212, 170, 0.2);
    animation: net-pulse 2s ease-in-out infinite;
}

.net-node.active {
    background: var(--color-accent-primary);
    box-shadow: 0 0 20px rgba(0, 212, 170, 0.5);
}

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

/* Concrete Mesh */
.mesh-structure {
    position: relative;
    width: 100px;
    height: 100px;
}

.mesh-line {
    position: absolute;
    background: var(--color-accent-primary);
    opacity: 0.4;
}

.mesh-line.h {
    width: 100%;
    height: 2px;
    left: 0;
}

.mesh-line.h:nth-of-type(1) { top: 33%; }
.mesh-line.h:nth-of-type(2) { top: 66%; }

.mesh-line.v {
    width: 2px;
    height: 100%;
    top: 0;
}

.mesh-line.v:nth-of-type(3) { left: 33%; }
.mesh-line.v:nth-of-type(4) { left: 66%; }

.mesh-joint {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--color-accent-primary);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: joint-glow 2s ease-in-out infinite;
}

@keyframes joint-glow {
    0%, 100% { box-shadow: 0 0 10px rgba(0, 212, 170, 0.3); }
    50% { box-shadow: 0 0 30px rgba(0, 212, 170, 0.6); }
}

/* Twin Model */
.twin-display {
    position: relative;
    width: 120px;
    height: 120px;
    perspective: 600px;
}

.twin-axis {
    position: absolute;
    background: var(--color-accent-primary);
    opacity: 0.3;
}

.twin-axis.x {
    width: 100%;
    height: 2px;
    top: 50%;
    left: 0;
}

.twin-axis.y {
    width: 2px;
    height: 100%;
    left: 50%;
    top: 0;
}

.twin-axis.z {
    width: 80%;
    height: 2px;
    top: 50%;
    left: 10%;
    transform: rotateZ(45deg);
}

.twin-object {
    position: absolute;
    width: 60px;
    height: 60px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotateX(45deg) rotateY(45deg);
    border: 2px solid var(--color-accent-primary);
    background: rgba(0, 212, 170, 0.1);
    animation: twin-rotate 6s linear infinite;
}

@keyframes twin-rotate {
    from { transform: translate(-50%, -50%) rotateX(45deg) rotateY(0deg); }
    to { transform: translate(-50%, -50%) rotateX(45deg) rotateY(360deg); }
}

.project-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-md);
    background: linear-gradient(transparent, rgba(10, 14, 23, 0.9));
}

.project-category {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(0, 212, 170, 0.15);
    border-radius: 100px;
    font-size: 0.75rem;
    color: var(--color-accent-primary);
    font-weight: 500;
}

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

.project-info h3 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
}

.project-info p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

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

.team-avatars {
    display: flex;
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: -8px;
    border: 2px solid var(--color-bg-tertiary);
}

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

.team-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ============================================
   CONTACTS SECTION
   ============================================ */

.contacts {
    background: linear-gradient(180deg, #0a0e17 0%, #0f1623 100%);
}

.contacts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.contact-card {
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition-base);
}

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

.contact-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto var(--space-md);
    color: var(--color-accent-primary);
}

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

.contact-card h3 {
    font-family: var(--font-display);
    font-size: 1.125rem;
    margin-bottom: var(--space-sm);
}

.contact-link {
    color: var(--color-accent-secondary);
    text-decoration: none;
    font-size: 1rem;
    transition: var(--transition-fast);
}

.contact-link:hover {
    color: var(--color-accent-primary);
}

.contact-address {
    color: var(--color-text-secondary);
    font-size: 1rem;
    font-style: normal;
    line-height: 1.7;
}

.map-container {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.map-frame {
    position: relative;
    height: 400px;
}

.map-frame iframe {
    filter: grayscale(100%) invert(92%) contrast(83%) !important;
}

.map-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-marker {
    position: relative;
}

.marker-pulse {
    position: absolute;
    width: 40px;
    height: 40px;
    background: rgba(0, 212, 170, 0.3);
    border-radius: 50%;
    animation: marker-pulse 2s ease-out infinite;
}

.marker-dot {
    position: relative;
    width: 16px;
    height: 16px;
    background: var(--color-accent-primary);
    border-radius: 50%;
    border: 3px solid var(--color-bg-primary);
}

@keyframes marker-pulse {
    0% { transform: scale(1); opacity: 0.6; }
    100% { transform: scale(3); opacity: 0; }
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--color-bg-primary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-2xl) var(--space-lg) var(--space-lg);
}

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

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

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

.footer-nav-col h4 {
    font-family: var(--font-display);
    font-size: 0.875rem;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.footer-nav-col ul {
    list-style: none;
}

.footer-nav-col li {
    margin-bottom: var(--space-sm);
}

.footer-nav-col a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.9375rem;
    transition: var(--transition-fast);
}

.footer-nav-col a:hover {
    color: var(--color-accent-primary);
}

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

.copyright {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

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

.footer-social a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.footer-social a:hover {
    color: var(--color-accent-primary);
    background: rgba(0, 212, 170, 0.1);
}

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

/* ============================================
   ANIMATIONS & EFFECTS
   ============================================ */

.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

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

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-bg-secondary);
        flex-direction: column;
        padding: calc(var(--space-3xl)) var(--space-xl) var(--space-xl);
        gap: var(--space-md);
        transition: right 0.3s ease;
        border-left: 1px solid rgba(255, 255, 255, 0.05);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-lg);
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .programs-grid {
        grid-template-columns: 1fr;
    }
    
    .program-card {
        grid-template-columns: 1fr;
    }
    
    .program-visual {
        height: 80px;
    }
    
    .lab-grid {
        grid-template-columns: 1fr;
    }
    
    .contacts-grid {
        grid-template-columns: 1fr;
    }
    
    .metric-row {
        grid-template-columns: 1fr;
        gap: var(--space-xs);
    }
    
    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
    
    .section-container {
        padding: var(--space-2xl) var(--space-md);
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .visual-frame {
        width: 200px;
        height: 200px;
    }
    
    .holo-ring.ring-1 { width: 180px; height: 180px; }
    .holo-ring.ring-2 { width: 140px; height: 140px; }
    .holo-ring.ring-3 { width: 100px; height: 100px; }
}

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