/* ============================================
   INFINITY AI SMART CONSTRUCTION ACADEMY
   Production Stylesheet
   Industry 4.0 Aesthetics
   ============================================ */

/* 1. CSS VARIABLES & THEME
   -------------------------------------------- */
:root {
  --graphite-950: #050508;
  --graphite-900: #0a0a0f;
  --graphite-800: #12121a;
  --graphite-700: #1c1c25;
  --graphite-600: #2a2a3a;
  --graphite-500: #3a3a4f;

  --neon-orange: #ff6b35;
  --neon-orange-soft: #ff8c5a;
  --neon-cyan: #00f5ff;
  --neon-cyan-soft: #80faff;

  --glow-orange: rgba(255, 107, 53, 0.35);
  --glow-cyan: rgba(0, 245, 255, 0.35);

  --text-primary: #f0f0f5;
  --text-secondary: #8a8a9a;
  --text-muted: #5a5a6a;

  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-strong: rgba(255, 255, 255, 0.15);

  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Orbitron', sans-serif;

  --radius: 16px;
  --radius-sm: 10px;
  --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--graphite-950);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img,
svg {
  display: block;
  max-width: 100%;
}

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

ul {
  list-style: none;
}

address {
  font-style: normal;
}

/* 3. UTILITIES & LAYOUT
   -------------------------------------------- */
.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 700;
  letter-spacing: 1px;
  margin-bottom: 1rem;
  text-transform: uppercase;
}

.section-header .section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--neon-orange);
  margin-bottom: 0.75rem;
}

.section-desc {
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
  font-size: 1.05rem;
  line-height: 1.7;
}

.accent-gradient {
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* 4. NAVIGATION
   -------------------------------------------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: var(--transition);
}

.navbar.scrolled {
  background: rgba(10, 10, 15, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
  padding: 0.75rem 0;
}

.nav-container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 1px;
}

.logo-icon {
  font-size: 1.5rem;
  color: var(--neon-cyan);
  text-shadow: 0 0 12px var(--glow-cyan);
}

.logo-accent {
  color: var(--neon-orange);
  text-shadow: 0 0 12px var(--glow-orange);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav-menu a {
  font-size: 0.9rem;
  font-weight: 500;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  transition: var(--transition);
}

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

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-orange));
  transition: width 0.3s ease;
}

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

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

.bar {
  display: block;
  width: 28px;
  height: 2px;
  background: var(--neon-cyan);
  margin: 6px 0;
  transition: 0.4s;
  box-shadow: 0 0 8px var(--glow-cyan);
}

/* 5. HERO SECTION
   -------------------------------------------- */
.hero {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: radial-gradient(circle at 50% 30%, var(--graphite-800), var(--graphite-950));
}

#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(5, 5, 8, 0.45);
  z-index: 2;
}

/* Holographic Skyscraper Models */
.skyscraper {
  position: absolute;
  bottom: 10%;
  transform-style: preserve-3d;
  opacity: 0.35;
  z-index: 2;
  pointer-events: none;
}

.skyscraper-1 {
  left: 8%;
  width: 70px;
  height: 280px;
  animation: floatBuilding 8s ease-in-out infinite;
}

.skyscraper-2 {
  right: 10%;
  width: 90px;
  height: 360px;
  animation: floatBuilding 10s ease-in-out infinite reverse;
}

.sf {
  position: absolute;
  border: 1px solid rgba(0, 245, 255, 0.18);
  background: rgba(0, 245, 255, 0.02);
}

.skyscraper-1 .front,
.skyscraper-1 .back { width: 70px; height: 280px; }
.skyscraper-1 .left,
.skyscraper-1 .right { width: 70px; height: 280px; }
.skyscraper-1 .top { width: 70px; height: 70px; }
.skyscraper-1 .front { transform: translateZ(35px); }
.skyscraper-1 .back { transform: translateZ(-35px); }
.skyscraper-1 .left { transform: rotateY(90deg) translateZ(35px); }
.skyscraper-1 .right { transform: rotateY(-90deg) translateZ(35px); }
.skyscraper-1 .top { transform: rotateX(90deg) translateZ(35px); }

.skyscraper-2 .front,
.skyscraper-2 .back { width: 90px; height: 360px; }
.skyscraper-2 .left,
.skyscraper-2 .right { width: 90px; height: 360px; }
.skyscraper-2 .top { width: 90px; height: 90px; }
.skyscraper-2 .front { transform: translateZ(45px); }
.skyscraper-2 .back { transform: translateZ(-45px); }
.skyscraper-2 .left { transform: rotateY(90deg) translateZ(45px); }
.skyscraper-2 .right { transform: rotateY(-90deg) translateZ(45px); }
.skyscraper-2 .top { transform: rotateX(90deg) translateZ(45px); }

/* Floating BIM Dashboards / Interfaces */
.floating-interface {
  position: absolute;
  z-index: 3;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  width: 200px;
  pointer-events: none;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), inset 0 0 20px rgba(0, 245, 255, 0.04);
  animation: floatUI 7s ease-in-out infinite;
}

.interface-1 {
  top: 20%;
  left: 6%;
  animation-delay: 0s;
}

.interface-2 {
  top: 35%;
  right: 6%;
  animation-delay: 2s;
}

.interface-3 {
  bottom: 22%;
  left: 12%;
  width: 180px;
  animation-delay: 4s;
}

.interface-header {
  font-family: var(--font-display);
  font-size: 0.65rem;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.interface-stat {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--neon-cyan);
  text-shadow: 0 0 10px var(--glow-cyan);
  margin-bottom: 0.5rem;
}

.interface-bar {
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 2px;
  overflow: hidden;
}

.interface-bar span {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-orange));
  box-shadow: 0 0 8px var(--glow-cyan);
}

/* Hero Content */
.hero-content {
  position: relative;
  z-index: 4;
  text-align: center;
  max-width: 860px;
  padding: 0 1.5rem;
}

.hero-subtitle {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--neon-orange);
  margin-bottom: 1.25rem;
  text-shadow: 0 0 12px var(--glow-orange);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 6vw, 4.2rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 1.25rem;
  letter-spacing: 1px;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  max-width: 580px;
  margin: 0 auto 2rem;
}

.cta-button {
  display: inline-block;
  padding: 1.1rem 2.5rem;
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: #fff;
  background: linear-gradient(135deg, var(--neon-orange), var(--neon-orange-soft));
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: 0 8px 24px var(--glow-orange), inset 0 0 0 2px rgba(255, 255, 255, 0.1);
}

.cta-button:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(255, 107, 53, 0.45), inset 0 0 0 2px rgba(255, 255, 255, 0.2);
}

/* 6. SYSTEMS / ABOUT SECTION
   -------------------------------------------- */
.systems {
  padding: 7rem 0;
  background: linear-gradient(180deg, var(--graphite-900) 0%, var(--graphite-800) 100%);
  position: relative;
  overflow: hidden;
}

.systems::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), var(--neon-orange), transparent);
  opacity: 0.6;
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-bottom: 5rem;
  text-align: center;
}

.stat-item {
  padding: 1.5rem;
  background: var(--glass-bg);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.stat-item:hover {
  border-color: var(--glass-border-strong);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--neon-cyan), var(--neon-orange));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-label {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* Systems Grid */
.systems-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.system-card {
  background: var(--glass-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 2.25rem;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.system-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 3px;
  background: linear-gradient(90deg, var(--neon-cyan), var(--neon-orange));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.system-card:hover {
  border-color: var(--glass-border-strong);
  transform: translateY(-6px);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.3);
}

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

.system-icon {
  width: 48px;
  height: 48px;
  color: var(--neon-cyan);
  margin-bottom: 1.25rem;
  filter: drop-shadow(0 0 6px var(--glow-cyan));
}

.system-card h3 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.system-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 7. PROGRAMS SECTION
   -------------------------------------------- */
.programs {
  padding: 7rem 0;
  background: var(--graphite-950);
}

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

.program-card {
  background: linear-gradient(145deg, var(--graphite-800), var(--graphite-900));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 2.5rem;
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.program-card::after {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 245, 255, 0.06), transparent 70%);
  opacity: 0;
  transition: opacity 0.5s ease;
}

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

.program-card:hover {
  border-color: rgba(0, 245, 255, 0.25);
  box-shadow: 0 0 40px rgba(0, 245, 255, 0.08);
  transform: translateY(-4px);
}

.program-meta {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--neon-orange);
  padding: 0.35rem 0.8rem;
  border: 1px solid rgba(255, 107, 53, 0.3);
  border-radius: 20px;
  margin-bottom: 1.25rem;
  background: rgba(255, 107, 53, 0.05);
}

.program-card h3 {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
  font-weight: 700;
}

.program-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.program-features {
  margin-bottom: 1.5rem;
}

.program-features li {
  font-size: 0.9rem;
  color: var(--text-muted);
  padding-left: 1.25rem;
  position: relative;
  margin-bottom: 0.5rem;
}

.program-features li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--neon-cyan);
}

.card-link {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--neon-cyan);
  position: relative;
  display: inline-block;
}

.card-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--neon-cyan);
  transition: width 0.3s ease;
}

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

/* 8. BUILDTECH LAB SECTION
   -------------------------------------------- */
.lab {
  padding: 7rem 0;
  background: linear-gradient(180deg, var(--graphite-950) 0%, var(--graphite-900) 100%);
}

.lab-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.lab-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 360px;
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: var(--transition);
}

.lab-card:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 245, 255, 0.25);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.lab-visual {
  position: absolute;
  inset: 0;
  z-index: 1;
}

/* Abstract project visualizations */
.vortex {
  background:
    repeating-conic-gradient(from 0deg, rgba(0, 245, 255, 0.04) 0deg 10deg, transparent 10deg 20deg),
    radial-gradient(circle at 50% 50%, rgba(0, 245, 255, 0.08), transparent 70%),
    linear-gradient(135deg, var(--graphite-800), var(--graphite-950));
}

.nexus {
  background:
    linear-gradient(0deg, transparent 24%, rgba(0, 245, 255, 0.04) 25%, rgba(0, 245, 255, 0.04) 26%, transparent 27%, transparent 74%, rgba(0, 245, 255, 0.04) 75%, rgba(0, 245, 255, 0.04) 76%, transparent 77%, transparent),
    linear-gradient(90deg, transparent 24%, rgba(0, 245, 255, 0.04) 25%, rgba(0, 245, 255, 0.04) 26%, transparent 27%, transparent 74%, rgba(0, 245, 255, 0.04) 75%, rgba(0, 245, 255, 0.04) 76%, transparent 77%, transparent),
    linear-gradient(135deg, var(--graphite-800), var(--graphite-950));
}

.helios {
  background:
    repeating-linear-gradient(45deg, rgba(255, 107, 53, 0.06) 0px, rgba(255, 107, 53, 0.06) 2px, transparent 2px, transparent 18px),
    radial-gradient(circle at 20% 80%, rgba(255, 107, 53, 0.1), transparent 60%),
    linear-gradient(135deg, var(--graphite-800), var(--graphite-950));
}

.aqua {
  background:
    radial-gradient(circle at 50% 110%, rgba(0, 245, 255, 0.12), transparent 60%),
    radial-gradient(circle at 30% 100%, rgba(0, 245, 255, 0.06), transparent 40%),
    linear-gradient(180deg, var(--graphite-800), var(--graphite-950));
}

.terra {
  background:
    radial-gradient(circle at 30% 50%, rgba(255, 107, 53, 0.08), transparent 50%),
    repeating-linear-gradient(0deg, transparent 0px, transparent 19px, rgba(255, 255, 255, 0.03) 20px),
    linear-gradient(135deg, var(--graphite-800), var(--graphite-950));
}

.vault {
  background:
    repeating-linear-gradient(60deg, rgba(0, 245, 255, 0.03) 0px, rgba(0, 245, 255, 0.03) 1px, transparent 1px, transparent 15px),
    repeating-linear-gradient(120deg, rgba(0, 245, 255, 0.03) 0px, rgba(0, 245, 255, 0.03) 1px, transparent 1px, transparent 15px),
    linear-gradient(135deg, var(--graphite-800), var(--graphite-950));
}

.lab-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 2;
  padding: 1.75rem;
  background: linear-gradient(to top, rgba(5, 5, 8, 0.98), rgba(5, 5, 8, 0.4));
  transform: translateY(12px);
  transition: transform 0.4s ease;
}

.lab-card:hover .lab-content {
  transform: translateY(0);
}

.lab-content h4 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  margin-bottom: 0.35rem;
}

.lab-platform {
  font-size: 0.8rem;
  color: var(--neon-orange);
  letter-spacing: 0.5px;
  margin-bottom: 0.5rem;
}

.lab-features {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* 9. CONTACT SECTION
   -------------------------------------------- */
.contact {
  padding: 7rem 0;
  background: var(--graphite-950);
  position: relative;
  overflow: hidden;
}

.contact::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 80% 20%, rgba(0, 245, 255, 0.04), transparent 60%);
  pointer-events: none;
}

/* Animated Structural Models */
.structural-model {
  position: absolute;
  transform-style: preserve-3d;
  opacity: 0.25;
  pointer-events: none;
  z-index: 1;
}

.model-1 {
  top: 10%;
  left: 5%;
  width: 80px;
  height: 80px;
  animation: rotateModel 16s linear infinite;
}

.model-2 {
  bottom: 15%;
  right: 5%;
  width: 120px;
  height: 120px;
  animation: rotateModel 20s linear infinite reverse;
}

.mf {
  position: absolute;
  border: 1px solid rgba(0, 245, 255, 0.25);
  background: rgba(0, 245, 255, 0.02);
}

.model-1 .front,
.model-1 .back,
.model-1 .left,
.model-1 .right { width: 80px; height: 80px; }
.model-1 .top,
.model-1 .bottom { width: 80px; height: 80px; }
.model-1 .front { transform: translateZ(40px); }
.model-1 .back { transform: translateZ(-40px); }
.model-1 .left { transform: rotateY(90deg) translateZ(40px); }
.model-1 .right { transform: rotateY(-90deg) translateZ(40px); }
.model-1 .top { transform: rotateX(90deg) translateZ(40px); }
.model-1 .bottom { transform: rotateX(-90deg) translateZ(40px); }

.model-2 .front,
.model-2 .back,
.model-2 .left,
.model-2 .right { width: 120px; height: 120px; }
.model-2 .top,
.model-2 .bottom { width: 120px; height: 120px; }
.model-2 .front { transform: translateZ(60px); }
.model-2 .back { transform: translateZ(-60px); }
.model-2 .left { transform: rotateY(90deg) translateZ(60px); }
.model-2 .right { transform: rotateY(-90deg) translateZ(60px); }
.model-2 .top { transform: rotateX(90deg) translateZ(60px); }
.model-2 .bottom { transform: rotateX(-90deg) translateZ(60px); }

/* Contact Grid */
.contact-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.25fr 1fr;
  gap: 3rem;
  align-items: start;
}

.glass-panel {
  position: relative;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 2.5rem;
  overflow: hidden;
}

.holographic-shimmer {
  position: absolute;
  top: -100%;
  left: -100%;
  width: 300%;
  height: 300%;
  background: conic-gradient(from 0deg, transparent, rgba(0, 245, 255, 0.08), transparent, rgba(255, 107, 53, 0.08), transparent);
  animation: hologramRotate 8s linear infinite;
  pointer-events: none;
  z-index: 0;
}

.contact-form-panel form {
  position: relative;
  z-index: 1;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.9rem 1rem;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 0 3px rgba(0, 245, 255, 0.1);
}

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

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' fill='none' stroke='%238a8a9a' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1rem;
}

.submit-btn {
  width: 100%;
  padding: 1.1rem;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: #fff;
  background: linear-gradient(135deg, var(--neon-cyan), #00a8b5);
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.submit-btn:hover {
  box-shadow: 0 8px 24px rgba(0, 245, 255, 0.3);
  transform: translateY(-2px);
}

.form-status {
  margin-top: 1rem;
  font-size: 0.9rem;
  min-height: 1.5rem;
  text-align: center;
}

/* Contact Detail Cards */
.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.detail-card {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  padding: 1.5rem;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  transition: var(--transition);
}

.detail-card:hover {
  border-color: var(--glass-border-strong);
  transform: translateX(6px);
}

.detail-icon {
  width: 40px;
  height: 40px;
  color: var(--neon-cyan);
  flex-shrink: 0;
  filter: drop-shadow(0 0 6px var(--glow-cyan));
}

.detail-card h4 {
  font-family: var(--font-display);
  font-size: 0.85rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 0.25rem;
}

.detail-card a,
.detail-card address {
  color: var(--text-primary);
  font-size: 0.95rem;
  line-height: 1.5;
}

.detail-card a:hover {
  color: var(--neon-cyan);
  text-shadow: 0 0 8px var(--glow-cyan);
}

/* 10. FOOTER
   -------------------------------------------- */
.footer {
  padding: 4rem 0 2rem;
  background: var(--graphite-900);
  border-top: 1px solid var(--glass-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand .logo {
  margin-bottom: 1rem;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  max-width: 320px;
  line-height: 1.7;
}

.footer-links h4,
.footer-contact h4 {
  font-family: var(--font-display);
  font-size: 0.8rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.footer-links li,
.footer-contact p {
  margin-bottom: 0.75rem;
}

.footer-links a,
.footer-contact a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: color 0.3s ease;
}

.footer-links a:hover,
.footer-contact a:hover {
  color: var(--neon-cyan);
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--glass-border);
}

.footer-bottom p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* 11. KEYFRAMES & ANIMATIONS
   -------------------------------------------- */
@keyframes floatBuilding {
  0%, 100% { transform: translateY(0) rotateY(15deg); }
  50% { transform: translateY(-20px) rotateY(25deg); }
}

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

@keyframes rotateModel {
  0% { transform: rotateX(0deg) rotateY(0deg) rotateZ(0deg); }
  100% { transform: rotateX(360deg) rotateY(180deg) rotateZ(360deg); }
}

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

@keyframes pulseGlow {
  0%, 100% { opacity: 0.8; }
  50% { opacity: 1; }
}

/* 12. RESPONSIVE DESIGN
   -------------------------------------------- */
@media (max-width: 1024px) {
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .lab-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 320px;
    height: 100vh;
    background: rgba(10, 10, 15, 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: flex-start;
    padding: 6rem 2.5rem 2rem;
    gap: 2rem;
    border-left: 1px solid var(--glass-border);
    transition: 0.35s ease;
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-menu a {
    font-size: 1.1rem;
  }

  .floating-interface {
    display: none;
  }

  .hero h1 {
    font-size: clamp(2rem, 8vw, 3rem);
  }

  .systems-grid {
    grid-template-columns: 1fr;
  }

  .programs-grid {
    grid-template-columns: 1fr;
  }

  .lab-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .structural-model {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 480px) {
  .container {
    width: 92%;
  }

  .section-header h2 {
    font-size: 1.5rem;
  }

  .program-card,
  .system-card,
  .glass-panel {
    padding: 1.75rem;
  }

  .cta-button {
    width: 100%;
    text-align: center;
  }

  .detail-card:hover {
    transform: none;
  }
}