/* ============================================
   INFINITY AI ATMOSPHERIC ROBOTICS ACADEMY
   Production Stylesheet
   ============================================ */

/* ============================================
   1. CSS CUSTOM PROPERTIES & DESIGN TOKENS
   ============================================ */
:root {
    /* Core Colors - Sky to Midnight Gradient Palette */
    --sky-50: #F0F9FF;
    --sky-100: #E0F2FE;
    --sky-200: #BAE6FD;
    --sky-300: #7DD3FC;
    --sky-400: #38BDF8;
    --sky-500: #0EA5E9;
    --sky-600: #0284C7;
    --sky-700: #0369A1;
    --sky-800: #075985;
    --sky-900: #0C4A6E;
    
    --midnight-50: #EEF2FF;
    --midnight-100: #E0E7FF;
    --midnight-200: #C7D2FE;
    --midnight-300: #A5B4FC;
    --midnight-400: #818CF8;
    --midnight-500: #6366F1;
    --midnight-600: #4F46E5;
    --midnight-700: #4338CA;
    --midnight-800: #3730A3;
    --midnight-900: #312E81;
    --midnight-950: #1E1B4B;
    
    /* Neutral Scale */
    --white: #FFFFFF;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --gray-900: #0F172A;
    --black: #020617;
    
    /* Semantic Colors */
    --primary-light: var(--sky-300);
    --primary: var(--sky-400);
    --primary-dark: var(--sky-600);
    --accent: var(--midnight-400);
    --accent-dark: var(--midnight-600);
    
    /* Glassmorphism */
    --glass-bg: rgba(15, 23, 42, 0.6);
    --glass-bg-light: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(125, 211, 252, 0.15);
    --glass-border-hover: rgba(125, 211, 252, 0.3);
    --glass-shadow: 0 8px 32px rgba(2, 8, 20, 0.4);
    
    /* Gradients */
    --gradient-hero: linear-gradient(135deg, var(--sky-900) 0%, var(--midnight-950) 50%, var(--black) 100%);
    --gradient-sky: linear-gradient(180deg, var(--sky-400) 0%, var(--midnight-700) 100%);
    --gradient-glow: radial-gradient(ellipse at center, var(--sky-400) 0%, transparent 70%);
    
    /* Typography */
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-tech: 'Rajdhani', sans-serif;
    
    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
    
    /* Animation */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out-sine: cubic-bezier(0.37, 0, 0.63, 1);
    --duration-fast: 150ms;
    --duration-normal: 300ms;
    --duration-slow: 500ms;
    --duration-slower: 800ms;
    
    /* Z-Index Scale */
    --z-bg: -10;
    --z-content: 10;
    --z-nav: 100;
    --z-modal: 200;
    --z-toast: 300;
}

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

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

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-200);
    background: var(--black);
    overflow-x: hidden;
}

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

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

ul, ol {
    list-style: none;
}

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

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

/* Selection */
::selection {
    background: var(--sky-500);
    color: var(--white);
}

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

::-webkit-scrollbar-track {
    background: var(--gray-900);
}

::-webkit-scrollbar-thumb {
    background: var(--sky-700);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--sky-500);
}

/* ============================================
   3. ATMOSPHERIC BACKGROUND EFFECTS
   ============================================ */
.atmosphere-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-bg);
    overflow: hidden;
    pointer-events: none;
}

.aurora-layer {
    position: absolute;
    width: 200%;
    height: 200%;
    top: -50%;
    left: -50%;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: aurora-drift 20s var(--ease-in-out-sine) infinite;
}

.aurora-1 {
    background: radial-gradient(ellipse at 30% 20%, var(--sky-600) 0%, transparent 60%);
    animation-duration: 25s;
}

.aurora-2 {
    background: radial-gradient(ellipse at 70% 60%, var(--midnight-600) 0%, transparent 55%);
    animation-duration: 30s;
    animation-delay: -10s;
}

.aurora-3 {
    background: radial-gradient(ellipse at 50% 80%, var(--sky-800) 0%, transparent 50%);
    animation-duration: 35s;
    animation-delay: -5s;
}

@keyframes aurora-drift {
    0%, 100% { transform: translate(0, 0) rotate(0deg) scale(1); }
    33% { transform: translate(5%, -3%) rotate(120deg) scale(1.05); }
    66% { transform: translate(-3%, 5%) rotate(240deg) scale(0.95); }
}

.particle-field {
    position: absolute;
    width: 100%;
    height: 100%;
}

.data-streams {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0.15;
}

.data-stream {
    position: absolute;
    width: 1px;
    background: linear-gradient(to bottom, transparent, var(--sky-400), transparent);
    animation: stream-flow linear infinite;
}

@keyframes stream-flow {
    0% { transform: translateY(-100%); opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { transform: translateY(100vh); opacity: 0; }
}

/* ============================================
   4. NAVIGATION
   ============================================ */
.main-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-nav);
    padding: var(--space-4) 0;
    transition: all var(--duration-normal) var(--ease-out-expo);
}

.main-nav.scrolled {
    padding: var(--space-2) 0;
    background: rgba(2, 6, 23, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo-icon {
    width: 44px;
    height: 44px;
    flex-shrink: 0;
}

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

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-main {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--white);
    letter-spacing: 0.05em;
    line-height: 1;
}

.logo-sub {
    font-family: var(--font-tech);
    font-size: 0.625rem;
    font-weight: 600;
    color: var(--sky-400);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    line-height: 1.4;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.nav-link {
    font-family: var(--font-tech);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-300);
    padding: var(--space-2) var(--space-4);
    border-radius: 6px;
    transition: all var(--duration-fast) ease;
    position: relative;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--sky-400);
    transition: all var(--duration-normal) var(--ease-out-expo);
    transform: translateX(-50%);
}

.nav-link:hover,
.nav-link.active {
    color: var(--sky-300);
}

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

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    z-index: calc(var(--z-nav) + 1);
}

.hamburger-line {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: all var(--duration-normal) var(--ease-out-expo);
}

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

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

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

/* ============================================
   5. HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--space-24) + 60px) var(--space-6) var(--space-16);
    overflow: hidden;
}

.hero-content {
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
    align-items: center;
}

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

.badge-pulse {
    width: 8px;
    height: 8px;
    background: #34D399;
    border-radius: 50%;
    animation: pulse-glow 2s ease infinite;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.4); }
    50% { opacity: 0.8; box-shadow: 0 0 0 8px rgba(52, 211, 153, 0); }
}

.badge-text {
    font-family: var(--font-tech);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--sky-300);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-headline {
    margin-bottom: var(--space-6);
}

.headline-line {
    display: block;
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    color: var(--white);
    letter-spacing: -0.02em;
}

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

.hero-description {
    font-size: 1.125rem;
    color: var(--gray-400);
    max-width: 520px;
    margin-bottom: var(--space-8);
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-12);
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-8);
    border-radius: 12px;
    font-family: var(--font-tech);
    font-size: 0.9375rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all var(--duration-normal) var(--ease-out-expo);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--sky-500), var(--midnight-600));
    color: var(--white);
    box-shadow: 0 4px 24px rgba(14, 165, 233, 0.3), 0 0 0 1px rgba(125, 211, 252, 0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(14, 165, 233, 0.4), 0 0 0 1px rgba(125, 211, 252, 0.3);
}

.btn-glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at var(--glow-x, 50%) var(--glow-y, 50%), rgba(125, 211, 252, 0.3), transparent 60%);
    opacity: 0;
    transition: opacity var(--duration-normal);
}

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

.btn-secondary {
    background: var(--glass-bg-light);
    color: var(--gray-200);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: var(--glass-bg);
    border-color: var(--glass-border-hover);
    color: var(--white);
}

.btn-icon {
    display: flex;
    transition: transform var(--duration-normal) var(--ease-out-expo);
}

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

/* Hero Stats */
.hero-stats {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

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

.stat-number {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--sky-300);
    line-height: 1;
}

.stat-label {
    font-family: var(--font-tech);
    font-size: 0.75rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--glass-border);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 500px;
}

.drone-orbit {
    position: relative;
    width: 400px;
    height: 400px;
}

.orbit-ring {
    position: absolute;
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.ring-1 {
    width: 300px;
    height: 300px;
    animation: orbit-rotate 20s linear infinite;
}

.ring-2 {
    width: 360px;
    height: 360px;
    animation: orbit-rotate 30s linear infinite reverse;
}

.ring-3 {
    width: 420px;
    height: 420px;
    animation: orbit-rotate 40s linear infinite;
}

.orbit-ring::before,
.orbit-ring::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    border: 1px solid var(--glass-border);
}

.ring-1::before {
    width: 8px;
    height: 8px;
    background: var(--sky-400);
    top: -4px;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 12px var(--sky-400);
}

.ring-2::after {
    width: 6px;
    height: 6px;
    background: var(--midnight-400);
    bottom: -3px;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 8px var(--midnight-400);
}

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

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

.hologram-base {
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 120px;
    height: 40px;
    background: var(--gradient-glow);
    border-radius: 50%;
    filter: blur(20px);
    opacity: 0.6;
}

.hologram-projection {
    width: 100%;
    height: 100%;
    animation: hologram-float 4s var(--ease-in-out-sine) infinite;
}

@keyframes hologram-float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

.rotor-blur {
    animation: rotor-spin 0.1s linear infinite;
}

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

.scan-line {
    animation: scan-sweep 3s ease-in-out infinite;
}

@keyframes scan-sweep {
    0%, 100% { opacity: 0.1; }
    50% { opacity: 0.5; }
}

.hologram-grid {
    position: absolute;
    inset: -40px;
    background-image: 
        linear-gradient(rgba(125, 211, 252, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(125, 211, 252, 0.05) 1px, transparent 1px);
    background-size: 20px 20px;
    transform: perspective(400px) rotateX(60deg);
    animation: grid-pulse 4s ease-in-out infinite;
}

@keyframes grid-pulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

/* Atmospheric Data Panels */
.atmospheric-data {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.data-panel {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: var(--space-3) var(--space-4);
    backdrop-filter: blur(12px);
    min-width: 160px;
    animation: panel-slide-in 0.8s var(--ease-out-expo) backwards;
}

.data-panel:nth-child(1) { animation-delay: 0.2s; }
.data-panel:nth-child(2) { animation-delay: 0.4s; }
.data-panel:nth-child(3) { animation-delay: 0.6s; }
.data-panel:nth-child(4) { animation-delay: 0.8s; }

@keyframes panel-slide-in {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.data-label {
    display: block;
    font-family: var(--font-tech);
    font-size: 0.625rem;
    color: var(--gray-500);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: var(--space-1);
}

.data-value {
    display: block;
    font-family: var(--font-display);
    font-size: 0.875rem;
    color: var(--sky-300);
    margin-bottom: var(--space-2);
}

.data-bar {
    width: 100%;
    height: 3px;
    background: rgba(125, 211, 252, 0.1);
    border-radius: 2px;
    overflow: hidden;
}

.data-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--sky-600), var(--sky-400));
    border-radius: 2px;
    animation: data-pulse 2s ease-in-out infinite;
}

.panel-altitude .data-fill { width: 78%; animation-delay: 0s; }
.panel-pressure .data-fill { width: 45%; animation-delay: 0.5s; }
.panel-temp .data-fill { width: 32%; animation-delay: 1s; }
.panel-wind .data-fill { width: 67%; animation-delay: 1.5s; }

@keyframes data-pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-3);
    opacity: 0.6;
    animation: scroll-bounce 2s ease infinite;
}

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

.scroll-mouse {
    width: 24px;
    height: 36px;
    border: 2px solid var(--gray-500);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    padding-top: 6px;
}

.scroll-wheel {
    width: 4px;
    height: 8px;
    background: var(--sky-400);
    border-radius: 2px;
    animation: wheel-scroll 1.5s ease infinite;
}

@keyframes wheel-scroll {
    0% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(12px); opacity: 0; }
}

.scroll-text {
    font-family: var(--font-tech);
    font-size: 0.625rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

/* ============================================
   6. SECTION COMMON STYLES
   ============================================ */
.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

.section-header {
    margin-bottom: var(--space-12);
}

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

.section-header.centered .title-accent {
    margin-left: auto;
    margin-right: auto;
}

.section-tag {
    display: inline-block;
    font-family: var(--font-tech);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--sky-400);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-3);
    padding: var(--space-1) var(--space-3);
    background: rgba(14, 165, 233, 0.1);
    border: 1px solid rgba(14, 165, 233, 0.2);
    border-radius: 4px;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 800;
    color: var(--white);
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.title-accent {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--sky-400), var(--midnight-500));
    border-radius: 2px;
    margin-top: var(--space-4);
}

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

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

.about-visual {
    position: relative;
}

.about-image-container {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    aspect-ratio: 4/5;
}

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

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

.image-overlay {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.overlay-grid {
    position: absolute;
    inset: 0;
    background-image: 
        linear-gradient(rgba(125, 211, 252, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(125, 211, 252, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

.overlay-scan {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--sky-400), transparent);
    animation: scan-vertical 4s ease-in-out infinite;
}

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

.image-badge {
    position: absolute;
    bottom: var(--space-4);
    left: var(--space-4);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: var(--space-3) var(--space-4);
    backdrop-filter: blur(12px);
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.badge-coord,
.badge-elev {
    font-family: var(--font-tech);
    font-size: 0.75rem;
    color: var(--sky-300);
}

.badge-elev {
    color: var(--gray-400);
}

.about-floating-card {
    position: absolute;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: var(--space-4);
    backdrop-filter: blur(16px);
    display: flex;
    align-items: center;
    gap: var(--space-3);
    box-shadow: var(--glass-shadow);
    animation: card-float 6s ease-in-out infinite;
}

.card-mission {
    top: 10%;
    right: -30px;
    animation-delay: -2s;
}

.card-coverage {
    bottom: 20%;
    left: -20px;
    animation-delay: -4s;
}

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

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--sky-600), var(--midnight-600));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.card-content {
    display: flex;
    flex-direction: column;
}

.card-label {
    font-family: var(--font-tech);
    font-size: 0.625rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.card-value {
    font-family: var(--font-display);
    font-size: 1.125rem;
    color: var(--white);
    font-weight: 600;
}

.about-content {
    padding-top: var(--space-8);
}

.about-text {
    margin-bottom: var(--space-10);
}

.about-text .lead {
    font-size: 1.25rem;
    color: var(--gray-200);
    line-height: 1.7;
    margin-bottom: var(--space-5);
}

.about-text p {
    color: var(--gray-400);
    margin-bottom: var(--space-4);
    line-height: 1.7;
}

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

.feature-item {
    display: flex;
    gap: var(--space-5);
    padding: var(--space-5);
    background: var(--glass-bg-light);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    transition: all var(--duration-normal) var(--ease-out-expo);
}

.feature-item:hover {
    background: var(--glass-bg);
    border-color: var(--glass-border-hover);
    transform: translateX(8px);
}

.feature-number {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--sky-600);
    line-height: 1;
    flex-shrink: 0;
    width: 40px;
}

.feature-body h4 {
    font-family: var(--font-tech);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--space-2);
}

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

/* ============================================
   8. SYSTEMS SECTION
   ============================================ */
.systems {
    padding: var(--space-24) 0;
    background: linear-gradient(180deg, transparent 0%, rgba(30, 58, 138, 0.05) 50%, transparent 100%);
}

.systems-showcase {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.system-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    overflow: hidden;
    transition: all var(--duration-slow) var(--ease-out-expo);
}

.system-card:nth-child(even) {
    direction: rtl;
}

.system-card:nth-child(even) > * {
    direction: ltr;
}

.system-card:hover {
    border-color: var(--glass-border-hover);
    box-shadow: 0 20px 60px rgba(2, 8, 20, 0.5);
    transform: translateY(-4px);
}

.system-visual {
    position: relative;
    overflow: hidden;
    min-height: 320px;
}

.system-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--duration-slow) var(--ease-out-expo);
}

.system-card:hover .system-image {
    transform: scale(1.1);
}

.system-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent 50%, rgba(15, 23, 42, 0.8) 100%);
}

.system-card:nth-child(even) .system-overlay {
    background: linear-gradient(270deg, transparent 50%, rgba(15, 23, 42, 0.8) 100%);
}

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

.system-content {
    padding: var(--space-8);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.system-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.2), rgba(99, 102, 241, 0.2));
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sky-400);
    margin-bottom: var(--space-5);
}

.system-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--space-4);
}

.system-description {
    color: var(--gray-400);
    line-height: 1.7;
    margin-bottom: var(--space-6);
}

.system-specs {
    display: flex;
    gap: var(--space-6);
    flex-wrap: wrap;
}

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

.spec-label {
    font-family: var(--font-tech);
    font-size: 0.625rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.spec-value {
    font-family: var(--font-display);
    font-size: 1.125rem;
    color: var(--sky-300);
    font-weight: 600;
}

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

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

.program-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: var(--space-8);
    transition: all var(--duration-slow) var(--ease-out-expo);
    position: relative;
    overflow: hidden;
}

.program-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--sky-500), var(--midnight-500));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--duration-slow) var(--ease-out-expo);
}

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

.program-card:hover {
    border-color: var(--glass-border-hover);
    transform: translateY(-8px);
    box-shadow: 0 24px 64px rgba(2, 8, 20, 0.4);
}

.program-card.featured {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.1), rgba(99, 102, 241, 0.05));
    border-color: rgba(14, 165, 233, 0.3);
}

.program-badge {
    position: absolute;
    top: var(--space-4);
    right: var(--space-4);
    font-family: var(--font-tech);
    font-size: 0.625rem;
    font-weight: 700;
    color: var(--white);
    background: linear-gradient(135deg, var(--sky-500), var(--midnight-500));
    padding: var(--space-1) var(--space-3);
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.program-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-5);
}

.program-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 900;
    color: rgba(125, 211, 252, 0.1);
    line-height: 1;
}

.program-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.15), rgba(99, 102, 241, 0.15));
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sky-400);
}

.program-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--space-4);
}

.program-description {
    color: var(--gray-400);
    line-height: 1.7;
    margin-bottom: var(--space-6);
}

.program-meta {
    display: flex;
    gap: var(--space-6);
    margin-bottom: var(--space-5);
    padding-bottom: var(--space-5);
    border-bottom: 1px solid var(--glass-border);
}

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

.meta-label {
    font-family: var(--font-tech);
    font-size: 0.625rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.meta-value {
    font-family: var(--font-tech);
    font-size: 0.875rem;
    color: var(--sky-300);
    font-weight: 600;
}

.program-modules {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-bottom: var(--space-6);
}

.module-tag {
    font-family: var(--font-tech);
    font-size: 0.75rem;
    color: var(--sky-300);
    background: rgba(14, 165, 233, 0.1);
    border: 1px solid rgba(14, 165, 233, 0.2);
    padding: var(--space-1) var(--space-3);
    border-radius: 6px;
}

.program-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-tech);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--sky-400);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: all var(--duration-normal) var(--ease-out-expo);
}

.program-cta::after {
    content: '→';
    transition: transform var(--duration-normal) var(--ease-out-expo);
}

.program-cta:hover {
    color: var(--sky-300);
}

.program-cta:hover::after {
    transform: translateX(4px);
}

/* ============================================
   10. ATMOSPHERIC LAB SECTION
   ============================================ */
.lab {
    padding: var(--space-24) 0;
    background: linear-gradient(180deg, rgba(30, 58, 138, 0.05) 0%, transparent 50%, rgba(30, 58, 138, 0.05) 100%);
}

.lab-dashboard {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    overflow: hidden;
}

.dashboard-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5) var(--space-8);
    border-bottom: 1px solid var(--glass-border);
    flex-wrap: wrap;
    gap: var(--space-4);
}

.dashboard-status {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--gray-600);
}

.status-indicator.active {
    background: #34D399;
    animation: status-pulse 2s ease infinite;
}

@keyframes status-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.4); }
    50% { box-shadow: 0 0 0 6px rgba(52, 211, 153, 0); }
}

.status-text {
    font-family: var(--font-tech);
    font-size: 0.75rem;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.dashboard-filters {
    display: flex;
    gap: var(--space-2);
}

.filter-btn {
    font-family: var(--font-tech);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-500);
    padding: var(--space-2) var(--space-4);
    border-radius: 8px;
    transition: all var(--duration-fast) ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.filter-btn:hover {
    color: var(--gray-300);
    background: var(--glass-bg-light);
}

.filter-btn.active {
    color: var(--sky-300);
    background: rgba(14, 165, 233, 0.15);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0;
    padding: var(--space-6);
}

.project-card {
    background: var(--glass-bg-light);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    overflow: hidden;
    transition: all var(--duration-slow) var(--ease-out-expo);
}

.project-card:hover {
    border-color: var(--glass-border-hover);
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(2, 8, 20, 0.3);
}

.project-visual {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

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

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

.project-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(15, 23, 42, 0.9) 0%, transparent 60%);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: var(--space-4);
}

.project-live-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    align-self: flex-start;
    background: rgba(220, 38, 38, 0.9);
    color: var(--white);
    font-family: var(--font-tech);
    font-size: 0.625rem;
    font-weight: 700;
    padding: var(--space-1) var(--space-3);
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.live-pulse {
    width: 6px;
    height: 6px;
    background: var(--white);
    border-radius: 50%;
    animation: live-pulse 1.5s ease infinite;
}

@keyframes live-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.project-status-badge {
    align-self: flex-start;
    font-family: var(--font-tech);
    font-size: 0.625rem;
    font-weight: 700;
    padding: var(--space-1) var(--space-3);
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.project-status-badge.deployed {
    background: rgba(52, 211, 153, 0.9);
    color: var(--gray-900);
}

.project-status-badge.development {
    background: rgba(251, 191, 36, 0.9);
    color: var(--gray-900);
}

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

.telemetry-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.telemetry-label {
    font-family: var(--font-tech);
    font-size: 0.625rem;
    color: var(--gray-500);
    letter-spacing: 0.1em;
}

.telemetry-value {
    font-family: var(--font-display);
    font-size: 0.875rem;
    color: var(--sky-300);
}

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

.project-tags {
    display: flex;
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.project-tag {
    font-family: var(--font-tech);
    font-size: 0.625rem;
    color: var(--sky-400);
    background: rgba(14, 165, 233, 0.1);
    border: 1px solid rgba(14, 165, 233, 0.2);
    padding: var(--space-1) var(--space-2);
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.project-desc {
    font-size: 0.875rem;
    color: var(--gray-500);
    line-height: 1.6;
    margin-bottom: var(--space-4);
}

.project-team {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--glass-border);
}

.team-avatars {
    display: flex;
}

.avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-tech);
    font-size: 0.625rem;
    font-weight: 700;
    color: var(--white);
    margin-left: -8px;
    border: 2px solid var(--gray-900);
}

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

.team-count {
    font-size: 0.75rem;
    color: var(--gray-500);
}

.project-metrics {
    display: flex;
    gap: var(--space-6);
}

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

.metric-label {
    font-family: var(--font-tech);
    font-size: 0.625rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.metric-value {
    font-family: var(--font-display);
    font-size: 1rem;
    color: var(--sky-300);
    font-weight: 600;
}

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

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

.contact-info {
    position: sticky;
    top: 120px;
}

.contact-lead {
    font-size: 1.125rem;
    color: var(--gray-400);
    line-height: 1.7;
    margin-bottom: var(--space-10);
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-5);
    background: var(--glass-bg-light);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    transition: all var(--duration-normal) var(--ease-out-expo);
}

.contact-method:hover {
    background: var(--glass-bg);
    border-color: var(--glass-border-hover);
    transform: translateX(8px);
}

.method-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--sky-600), var(--midnight-600));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    flex-shrink: 0;
}

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

.method-label {
    font-family: var(--font-tech);
    font-size: 0.625rem;
    color: var(--gray-500);
    text-transform: uppercase;
    letter-spacing: 0.15em;
}

.method-value {
    font-size: 0.9375rem;
    color: var(--gray-200);
    font-weight: 500;
}

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

.social-link {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--glass-bg-light);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-400);
    transition: all var(--duration-normal) var(--ease-out-expo);
}

.social-link:hover {
    background: linear-gradient(135deg, var(--sky-600), var(--midnight-600));
    border-color: transparent;
    color: var(--white);
    transform: translateY(-4px);
}

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

.contact-form {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: var(--space-8);
    backdrop-filter: blur(20px);
    position: relative;
    z-index: 2;
}

.form-header {
    margin-bottom: var(--space-8);
}

.form-header h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--space-2);
}

.form-header p {
    color: var(--gray-500);
}

.form-group {
    margin-bottom: var(--space-5);
}

.form-group label {
    display: block;
    font-family: var(--font-tech);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--gray-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-2);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: var(--glass-bg-light);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    color: var(--white);
    font-size: 0.9375rem;
    transition: all var(--duration-normal) ease;
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--sky-500);
    box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%2394A3B8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: var(--space-10);
}

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

.form-error {
    display: none;
    font-size: 0.75rem;
    color: #F87171;
    margin-top: var(--space-2);
}

.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: #F87171;
}

.form-group.error .form-error {
    display: block;
}

.form-submit {
    width: 100%;
    padding: var(--space-4) var(--space-8);
    background: linear-gradient(135deg, var(--sky-500), var(--midnight-600));
    color: var(--white);
    border-radius: 12px;
    font-family: var(--font-tech);
    font-size: 0.9375rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    transition: all var(--duration-normal) var(--ease-out-expo);
    position: relative;
}

.form-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(14, 165, 233, 0.3);
}

.form-submit:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.submit-loading {
    display: none;
    animation: spin 1s linear infinite;
}

.form-submit.loading .submit-text,
.form-submit.loading .submit-icon {
    opacity: 0;
}

.form-submit.loading .submit-loading {
    display: block;
    position: absolute;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.form-success {
    display: none;
    text-align: center;
    padding: var(--space-8);
}

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

.success-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-4);
    color: #34D399;
}

.form-success h4 {
    font-family: var(--font-display);
    font-size: 1.25rem;
    color: var(--white);
    margin-bottom: var(--space-2);
}

.form-success p {
    color: var(--gray-400);
}

.form-decoration {
    position: absolute;
    inset: -40px;
    z-index: 1;
    pointer-events: none;
}

.decoration-ring {
    position: absolute;
    border-radius: 50%;
    border: 1px solid var(--glass-border);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.decoration-ring.ring-1 {
    width: 500px;
    height: 500px;
    animation: decoration-spin 30s linear infinite;
}

.decoration-ring.ring-2 {
    width: 600px;
    height: 600px;
    animation: decoration-spin 40s linear infinite reverse;
}

.decoration-ring.ring-3 {
    width: 700px;
    height: 700px;
    animation: decoration-spin 50s linear infinite;
}

@keyframes decoration-spin {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* ============================================
   12. FOOTER
   ============================================ */
.main-footer {
    padding: var(--space-16) 0 var(--space-8);
    border-top: 1px solid var(--glass-border);
    background: linear-gradient(180deg, transparent, rgba(30, 58, 138, 0.05));
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-6);
}

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

.footer-logo {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-4);
}

.footer-logo svg {
    width: 100%;
    height: 100%;
}

.footer-tagline {
    color: var(--gray-500);
    line-height: 1.6;
    margin-bottom: var(--space-5);
    max-width: 280px;
}

.footer-certifications {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
}

.cert-badge {
    font-family: var(--font-tech);
    font-size: 0.625rem;
    color: var(--gray-500);
    background: var(--glass-bg-light);
    border: 1px solid var(--glass-border);
    padding: var(--space-1) var(--space-3);
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-heading {
    font-family: var(--font-tech);
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--white);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-5);
}

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

.footer-links a {
    font-size: 0.875rem;
    color: var(--gray-500);
    transition: color var(--duration-fast) ease;
}

.footer-links a:hover {
    color: var(--sky-400);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-8);
    border-top: 1px solid var(--glass-border);
    flex-wrap: wrap;
    gap: var(--space-4);
}

.copyright {
    font-size: 0.875rem;
    color: var(--gray-600);
}

.footer-location {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-family: var(--font-tech);
    font-size: 0.75rem;
    color: var(--gray-500);
}

.location-dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--sky-500);
}

/* ============================================
   13. ANIMATION UTILITIES
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: all var(--duration-slower) var(--ease-out-expo);
}

.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; }

/* ============================================
   14. RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1200px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }
    
    .hero-visual {
        order: -1;
        min-height: 400px;
    }
    
    .atmospheric-data {
        position: relative;
        right: auto;
        top: auto;
        transform: none;
        flex-direction: row;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .about-grid,
    .contact-layout {
        grid-template-columns: 1fr;
        gap: var(--space-10);
    }
    
    .about-visual,
    .contact-info {
        position: relative;
        top: auto;
    }
    
    .about-floating-card {
        display: none;
    }
    
    .system-card,
    .system-card:nth-child(even) {
        grid-template-columns: 1fr;
        direction: ltr;
    }
    
    .system-card:nth-child(even) > * {
        direction: ltr;
    }
    
    .system-visual {
        min-height: 240px;
    }
    
    .system-overlay,
    .system-card:nth-child(even) .system-overlay {
        background: linear-gradient(to top, rgba(15, 23, 42, 0.9) 0%, transparent 60%);
    }
}

@media (max-width: 768px) {
    :root {
        --space-24: 4rem;
        --space-32: 5rem;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: rgba(2, 6, 23, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        gap: var(--space-4);
        padding: var(--space-8);
        transition: right var(--duration-slow) var(--ease-out-expo);
        border-left: 1px solid var(--glass-border);
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-link {
        font-size: 1.125rem;
        padding: var(--space-3) 0;
    }
    
    .headline-line {
        font-size: clamp(2rem, 8vw, 3rem);
    }
    
    .hero-actions {
        flex-direction: column;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .drone-orbit {
        width: 280px;
        height: 280px;
    }
    
    .ring-1 { width: 200px; height: 200px; }
    .ring-2 { width: 240px; height: 240px; }
    .ring-3 { width: 280px; height: 280px; }
    
    .programs-grid,
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .dashboard-filters {
        width: 100%;
        overflow-x: auto;
        padding-bottom: var(--space-2);
    }
    
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-8);
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .section-container {
        padding: 0 var(--space-4);
    }
    
    .nav-container {
        padding: 0 var(--space-4);
    }
    
    .hero {
        padding: calc(var(--space-16) + 60px) var(--space-4) var(--space-12);
    }
    
    .program-card,
    .contact-form {
        padding: var(--space-5);
    }
    
    .system-content {
        padding: var(--space-5);
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 1.5rem;
    }
}

/* ============================================
   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;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    .aurora-layer,
    .data-stream,
    .orbit-ring,
    .hologram-projection,
    .hologram-grid,
    .scan-line,
    .rotor-blur,
    .scroll-indicator,
    .about-floating-card,
    .decoration-ring {
        animation: none !important;
    }
}

/* ============================================
   16. PRINT STYLES
   ============================================ */
@media print {
    .atmosphere-bg,
    .hero-visual,
    .scroll-indicator,
    .about-floating-card,
    .system-particles,
    .form-decoration {
        display: none !important;
    }
    
    .hero-content,
    .about-grid,
    .systems-showcase,
    .programs-grid,
    .contact-layout {
        grid-template-columns: 1fr !important;
    }
    
    body {
        color: #000;
        background: #fff;
    }
    
    .main-nav {
        position: relative;
    }
}