/* ============================================
   VERTEX AI ACADEMY - ENERGY STORAGE INTELLIGENCE
   Production-ready CSS with glassmorphism,
   futuristic animations, and premium UI
   ============================================ */

/* ============================================
   1. CSS VARIABLES & DESIGN TOKENS
   ============================================ */
:root {
    /* Core Colors */
    --color-bg-deep: #030816;
    --color-bg-mid: #061229;
    --color-bg-surface: #0a1a3a;
    --color-bg-elevated: #0f2248;
    
    /* Primary Gradient Palette */
    --color-primary: #00d4e8;
    --color-primary-dark: #0097a7;
    --color-primary-glow: rgba(0, 212, 232, 0.3);
    --color-secondary: #7c3aed;
    --color-accent-gold: #f5a623;
    --color-accent-gold-glow: rgba(245, 166, 35, 0.25);
    
    /* Text Colors */
    --color-text-primary: #e8eef8;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;
    
    /* Glassmorphism */
    --glass-bg: rgba(10, 26, 58, 0.6);
    --glass-border: rgba(0, 212, 232, 0.12);
    --glass-border-hover: rgba(0, 212, 232, 0.25);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    
    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #030816 0%, #061229 50%, #0a1a3a 100%);
    --gradient-gold: linear-gradient(135deg, #f5a623 0%, #f7c948 50%, #f5a623 100%);
    --gradient-cyan: linear-gradient(135deg, #00d4e8 0%, #00bcd4 50%, #0097a7 100%);
    --gradient-mesh: radial-gradient(ellipse at 20% 50%, rgba(0, 212, 232, 0.08) 0%, transparent 50%),
                      radial-gradient(ellipse at 80% 50%, rgba(124, 58, 237, 0.06) 0%, transparent 50%);
    
    /* 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;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Z-index layers */
    --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: var(--color-bg-deep);
    color: var(--color-text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Selection */
::selection {
    background: rgba(0, 212, 232, 0.3);
    color: var(--color-text-primary);
}

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

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

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

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

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

/* ============================================
   4. UTILITY CLASSES
   ============================================ */
.section-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-base), 
                box-shadow var(--transition-base),
                transform var(--transition-base);
}

.glass-panel:hover {
    border-color: var(--glass-border-hover);
    box-shadow: var(--glass-shadow), 0 0 40px rgba(0, 212, 232, 0.08);
}

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

.main-nav.scrolled {
    background: rgba(3, 8, 22, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding: var(--space-xs) 0;
}

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

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    text-decoration: none;
    color: var(--color-text-primary);
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    transition: opacity var(--transition-fast);
}

.logo:hover {
    opacity: 0.9;
}

.logo-icon {
    color: var(--color-primary);
    font-size: 1.5rem;
    animation: pulse-glow 3s ease-in-out infinite;
}

.logo-text {
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

@keyframes pulse-glow {
    0%, 100% { text-shadow: 0 0 10px var(--color-primary-glow); }
    50% { text-shadow: 0 0 20px var(--color-primary-glow), 0 0 40px var(--color-primary-glow); }
}

/* Navigation Menu */
.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--space-xs);
}

.nav-link {
    display: block;
    padding: var(--space-xs) var(--space-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), 
                background var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-cyan);
    border-radius: 1px;
    transition: width var(--transition-base);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 60%;
}

/* Navigation CTA */
.nav-cta {
    display: none;
    padding: var(--space-xs) var(--space-md);
    background: var(--gradient-cyan);
    color: var(--color-bg-deep);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-sm);
    transition: transform var(--transition-fast), 
                box-shadow var(--transition-fast);
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px var(--color-primary-glow);
}

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

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 1px;
    transition: transform var(--transition-base), opacity var(--transition-base);
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   6. BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-fast), 
                box-shadow var(--transition-fast);
}

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

.btn-primary {
    background: var(--gradient-cyan);
    color: var(--color-bg-deep);
    box-shadow: 0 4px 20px var(--color-primary-glow);
}

.btn-primary:hover {
    box-shadow: 0 8px 30px var(--color-primary-glow), 0 0 60px rgba(0, 212, 232, 0.15);
}

.btn-glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at var(--glow-x, 50%) var(--glow-y, 50%), 
                rgba(255, 255, 255, 0.3) 0%, transparent 60%);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.btn:hover .btn-glow {
    opacity: 1;
}

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

.btn-secondary:hover {
    border-color: var(--glass-border-hover);
    background: rgba(0, 212, 232, 0.05);
}

.btn-full {
    width: 100%;
}

/* ============================================
   7. SECTION HEADERS
   ============================================ */
.section-header {
    margin-bottom: var(--space-xl);
}

.section-header.centered {
    text-align: center;
}

.section-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: rgba(0, 212, 232, 0.1);
    border: 1px solid rgba(0, 212, 232, 0.2);
    border-radius: var(--radius-sm);
    color: var(--color-primary);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    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;
    color: var(--color-text-primary);
    letter-spacing: -0.02em;
}

.section-title br {
    display: block;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 560px;
    margin: var(--space-md) auto 0;
}

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

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-mesh);
    z-index: var(--z-content);
    pointer-events: none;
}

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

/* Hero Badge */
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-xs) var(--space-md);
    background: rgba(245, 166, 35, 0.1);
    border: 1px solid rgba(245, 166, 35, 0.2);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
    color: var(--color-accent-gold);
    margin-bottom: var(--space-lg);
}

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

@keyframes badge-pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(245, 166, 35, 0.4); }
    50% { opacity: 0.8; box-shadow: 0 0 0 8px rgba(245, 166, 35, 0); }
}

/* Hero Title */
.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: var(--space-lg);
    letter-spacing: -0.03em;
}

.title-line {
    display: block;
}

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

/* Hero Subtitle */
.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 520px;
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

/* Hero CTA */
.hero-cta {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
    flex-wrap: wrap;
}

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

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

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

.stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
    max-width: 120px;
}

/* Hero Visual - Battery Hologram */
.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 400px;
}

.battery-hologram {
    position: relative;
    width: 280px;
    height: 400px;
}

.battery-core {
    position: absolute;
    inset: 0;
    border-radius: var(--radius-xl);
    background: linear-gradient(180deg, 
        rgba(0, 212, 232, 0.1) 0%, 
        rgba(0, 212, 232, 0.05) 100%);
    border: 2px solid rgba(0, 212, 232, 0.3);
    overflow: hidden;
}

.battery-level {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 75%;
    background: linear-gradient(180deg, 
        rgba(0, 212, 232, 0.3) 0%, 
        rgba(0, 212, 232, 0.15) 100%);
    animation: battery-charge 4s ease-in-out infinite;
}

@keyframes battery-charge {
    0%, 100% { height: 60%; }
    50% { height: 85%; }
}

.battery-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(0, 212, 232, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 212, 232, 0.1) 1px, transparent 1px);
    background-size: 20px 20px;
    opacity: 0.5;
}

.orbit-ring {
    position: absolute;
    border: 1px solid rgba(0, 212, 232, 0.15);
    border-radius: 50%;
    animation: orbit-rotate linear infinite;
}

.ring-1 {
    width: 340px;
    height: 340px;
    top: 30px;
    left: -30px;
    animation-duration: 20s;
}

.ring-2 {
    width: 400px;
    height: 400px;
    top: 0;
    left: -60px;
    animation-duration: 30s;
    animation-direction: reverse;
}

.ring-3 {
    width: 460px;
    height: 460px;
    top: -30px;
    left: -90px;
    animation-duration: 40s;
}

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

.energy-particles {
    position: absolute;
    inset: -50px;
}

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

.scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
    50% { opacity: 1; transform: scaleY(1); }
}

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

.about-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

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

.about-card.featured {
    background: linear-gradient(135deg, 
        rgba(0, 212, 232, 0.1) 0%, 
        rgba(124, 58, 237, 0.05) 100%);
    border-color: rgba(0, 212, 232, 0.25);
}

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

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

.about-card h3 {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-text-primary);
}

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

/* About Image Section */
.about-image-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

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

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

.image-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: var(--space-lg);
    background: linear-gradient(to top, rgba(3, 8, 22, 0.9), transparent);
}

.overlay-data {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.data-value {
    font-family: var(--font-display);
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-primary);
    line-height: 1;
}

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

.about-text-block h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

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

.about-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

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

.feature-check {
    color: var(--color-primary);
    font-size: 1.25rem;
}

/* ============================================
   10. PROGRAMS SECTION
   ============================================ */
.programs {
    padding: var(--space-3xl) 0;
    background: linear-gradient(180deg, var(--color-bg-deep) 0%, var(--color-bg-mid) 50%, var(--color-bg-deep) 100%);
}

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

.program-card {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: 0;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: transform var(--transition-base), 
                box-shadow var(--transition-base),
                border-color var(--transition-base);
    cursor: pointer;
}

.program-card:hover {
    transform: translateY(-4px);
    border-color: var(--glass-border-hover);
    box-shadow: var(--glass-shadow), 0 0 60px rgba(0, 212, 232, 0.1);
}

.program-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, 
        rgba(0, 212, 232, 0.08) 0%, 
        rgba(124, 58, 237, 0.05) 100%);
    overflow: hidden;
}

.program-icon {
    width: 80px;
    height: 80px;
    color: var(--color-primary);
    z-index: 1;
    transition: transform var(--transition-slow);
}

.program-card:hover .program-icon {
    transform: scale(1.1);
}

.program-glow {
    position: absolute;
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.program-card:hover .program-glow {
    opacity: 0.6;
}

.program-content {
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
}

.program-number {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-primary);
    opacity: 0.6;
    letter-spacing: 0.1em;
}

.program-content h3 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    margin: var(--space-sm) 0;
    color: var(--color-text-primary);
}

.program-content p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    flex-grow: 1;
}

.program-meta {
    display: flex;
    gap: var(--space-sm);
    margin: var(--space-md) 0;
}

.meta-item {
    padding: var(--space-xs) var(--space-sm);
    background: rgba(0, 212, 232, 0.08);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--color-primary);
}

.program-link {
    color: var(--color-primary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 600;
    transition: color var(--transition-fast);
}

.program-link:hover {
    color: var(--color-accent-gold);
}

/* ============================================
   11. LABORATORY SECTION
   ============================================ */
.laboratory {
    padding: var(--space-3xl) 0;
}

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

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

.project-card:hover {
    transform: translateY(-4px);
}

.project-image {
    position: relative;
    height: 220px;
    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(1.05);
}

.project-status {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-active {
    background: rgba(0, 212, 232, 0.2);
    color: var(--color-primary);
    border: 1px solid rgba(0, 212, 232, 0.3);
}

.status-pilot {
    background: rgba(245, 166, 35, 0.2);
    color: var(--color-accent-gold);
    border: 1px solid rgba(245, 166, 35, 0.3);
}

.status-deployed {
    background: rgba(16, 185, 129, 0.2);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

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

.project-tag {
    display: inline-block;
    padding: 2px var(--space-sm);
    background: rgba(124, 58, 237, 0.15);
    border-radius: var(--radius-sm);
    font-size: 0.6875rem;
    color: #a78bfa;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

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

.project-info p {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-md);
}

.project-team {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.team-avatars {
    display: flex;
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.6875rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-left: -8px;
    border: 2px solid var(--color-bg-surface);
}

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

.team-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* ============================================
   12. CONTACT SECTION
   ============================================ */
.contact {
    padding: var(--space-3xl) 0;
    background: linear-gradient(180deg, var(--color-bg-deep) 0%, var(--color-bg-mid) 100%);
}

.contact-layout {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--space-2xl);
    align-items: start;
}

.contact-lead {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

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

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    text-decoration: none;
    color: inherit;
    transition: transform var(--transition-base);
}

.contact-method:hover {
    transform: translateX(4px);
}

.method-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 232, 0.1);
    border-radius: var(--radius-md);
    font-size: 1.25rem;
    color: var(--color-primary);
    flex-shrink: 0;
}

.method-details {
    display: flex;
    flex-direction: column;
}

.method-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.method-value {
    font-size: 0.9375rem;
    color: var(--color-text-primary);
    font-weight: 500;
}

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

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 700;
    transition: all var(--transition-base);
}

.social-link:hover {
    background: rgba(0, 212, 232, 0.1);
    border-color: var(--glass-border-hover);
    color: var(--color-primary);
    transform: translateY(-2px);
}

/* Contact Form */
.contact-form-wrapper {
    padding: var(--space-xl);
}

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

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

.form-group label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: var(--space-sm) var(--space-md);
    background: rgba(3, 8, 22, 0.5);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 0.9375rem;
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(0, 212, 232, 0.1);
}

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

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2394a3b8' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-md) center;
    padding-right: var(--space-xl);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-success {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-xl);
}

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

.success-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 232, 0.1);
    border-radius: 50%;
    font-size: 2.5rem;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
    animation: success-pop 0.5s ease;
}

@keyframes success-pop {
    0% { transform: scale(0); }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); }
}

.form-success h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.form-success p {
    color: var(--color-text-secondary);
}

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

.footer-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: grid;
    grid-template-columns: 1.5fr 2fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-xl);
}

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

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

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

.footer-column h4 {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.footer-column a {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color var(--transition-fast);
}

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

.footer-column p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    line-height: 1.7;
}

.footer-bottom {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--space-lg) var(--space-lg) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--glass-border);
}

.footer-bottom p {
    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);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

/* ============================================
   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 {
        order: -1;
        min-height: 300px;
    }
    
    .battery-hologram {
        transform: scale(0.8);
    }
    
    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .about-image-section {
        grid-template-columns: 1fr;
    }
    
    .programs-grid {
        grid-template-columns: 1fr;
    }
    
    .program-card {
        grid-template-columns: 140px 1fr;
    }
    
    .lab-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-layout {
        grid-template-columns: 1fr;
    }
    
    .footer-container {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        flex-direction: column;
        background: rgba(3, 8, 22, 0.98);
        backdrop-filter: blur(20px);
        padding: calc(60px + var(--space-xl)) var(--space-lg) var(--space-lg);
        gap: 0;
        transition: right var(--transition-smooth);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-link {
        padding: var(--space-md);
        border-radius: var(--radius-md);
    }
    
    .nav-link:hover {
        background: rgba(0, 212, 232, 0.05);
    }
    
    .mobile-toggle {
        display: flex;
        z-index: calc(var(--z-nav) + 1);
    }
    
    .nav-cta {
        display: none;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .stat-item {
        align-items: center;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .program-card {
        grid-template-columns: 1fr;
    }
    
    .program-visual {
        height: 160px;
    }
    
    .lab-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
}

@media (max-width: 480px) {
    :root {
        --space-lg: 1.25rem;
        --space-xl: 2rem;
        --space-2xl: 3rem;
        --space-3xl: 4rem;
    }
    
    .hero {
        padding-top: calc(var(--space-2xl) + 60px);
    }
    
    .battery-hologram {
        transform: scale(0.6);
    }
    
    .btn {
        width: 100%;
    }
    
    .hero-cta {
        flex-direction: column;
    }
}

/* ============================================
   15. ANIMATIONS & EFFECTS
   ============================================ */
/* Fade In Up Animation */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Stagger children */
.stagger-children > * {
    opacity: 0;
    transform: translateY(20px);
}

.stagger-children.visible > *:nth-child(1) { animation: fade-in-up 0.5s 0.1s forwards; }
.stagger-children.visible > *:nth-child(2) { animation: fade-in-up 0.5s 0.2s forwards; }
.stagger-children.visible > *:nth-child(3) { animation: fade-in-up 0.5s 0.3s forwards; }
.stagger-children.visible > *:nth-child(4) { animation: fade-in-up 0.5s 0.4s forwards; }
.stagger-children.visible > *:nth-child(5) { animation: fade-in-up 0.5s 0.5s forwards; }
.stagger-children.visible > *:nth-child(6) { animation: fade-in-up 0.5s 0.6s forwards; }

@keyframes fade-in-up {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Glow effect for interactive elements */
.glow-hover {
    transition: box-shadow var(--transition-base);
}

.glow-hover:hover {
    box-shadow: 0 0 30px var(--color-primary-glow);
}

/* Energy flow animation */
@keyframes energy-flow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.energy-gradient {
    background-size: 200% 200%;
    animation: energy-flow 8s ease infinite;
}

/* Particle container for JS-generated particles */
.particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    animation: particle-float linear infinite;
}

@keyframes particle-float {
    0% {
        transform: translateY(0) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100px) translateX(50px);
        opacity: 0;
    }
}

/* 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;
    }
}