/*
  ============================================
  VERTEX AI INTELLIGENT RECYCLING ROBOTICS ACADEMY
  Production Stylesheet
  ============================================
*/

/* 1. CSS CUSTOM PROPERTIES
   ============================================ */
:root {
  /* Core Palette */
  --graphite-900: #0b1120;
  --graphite-800: #101b2e;
  --graphite-700: #1e293b;
  --graphite-600: #2a3b55;
  --emerald-500: #10b981;
  --emerald-400: #34d399;
  --emerald-300: #6ee7b7;
  --electric-blue-500: #00d9ff;
  --electric-blue-400: #67e8f9;
  --electric-blue-600: #0ea5e9;
  --violet-500: #8b5cf6;
  --violet-400: #a78bfa;

  /* Gradients */
  --gradient-emerald-blue: linear-gradient(135deg, var(--emerald-400), var(--electric-blue-500));
  --gradient-hero: radial-gradient(ellipse at 70% 10%, rgba(16,185,129,0.15) 0%, transparent 50%),
                    radial-gradient(ellipse at 30% 90%, rgba(0,217,255,0.12) 0%, transparent 50%),
                    radial-gradient(ellipse at 50% 50%, rgba(139,92,246,0.05) 0%, transparent 60%);
  
  /* Surface Colors */
  --surface-primary: var(--graphite-900);
  --surface-secondary: var(--graphite-800);
  --surface-glass: rgba(16, 27, 46, 0.55);

  /* Text Colors */
  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;

  /* Spacing */
  --container-max: 1200px;
  --section-padding: 6rem;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;

  /* Typography */
  --font-sans: "Segoe UI", Roboto, "Helvetica Neue", Arial, system-ui, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;

  /* Effects */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 24px;
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.25);
  --shadow-md: 0 8px 32px rgba(0,0,0,0.35);
  --shadow-glow-emerald: 0 0 20px rgba(16,185,129,0.25);
  --shadow-glow-blue: 0 0 20px rgba(0,217,255,0.25);
  
  /* Transitions */
  --transition-fast: 180ms ease;
  --transition-medium: 300ms ease;
  --transition-slow: 500ms ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--surface-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

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

:focus-visible {
  outline: 2px solid var(--electric-blue-500);
  outline-offset: 3px;
}

/* 3. TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4 {
  line-height: 1.2;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.5rem, 5vw, 3.8rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.6rem); }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }

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

/* 4. UTILITIES
   ============================================ */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.section {
  padding: var(--section-padding) 0;
  position: relative;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--emerald-400);
  margin-bottom: var(--space-sm);
}

.section-tag::before {
  content: '';
  display: block;
  width: 24px;
  height: 2px;
  background: var(--gradient-emerald-blue);
}

.section-title {
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.section-subtitle {
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  max-width: 600px;
  margin-bottom: var(--space-xl);
  line-height: 1.7;
}

.section-header {
  max-width: 700px;
  margin-bottom: var(--space-xl);
}

.glass {
  background: var(--surface-glass);
  backdrop-filter: blur(16px) saturate(160%);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-md);
}

.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

/* 5. NAVIGATION
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.2rem 0;
  transition: background-color var(--transition-medium), box-shadow var(--transition-medium);
}

.navbar.scrolled {
  background: rgba(11, 17, 32, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-weight: 700;
  font-size: 1.3rem;
  color: var(--text-primary);
}

.logo-icon {
  display: flex;
  color: var(--electric-blue-500);
}

.logo-accent {
  background: var(--gradient-emerald-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.25rem 0;
  transition: color var(--transition-fast);
}

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

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

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

.nav-cta {
  margin-left: var(--space-sm);
}

.mobile-toggle {
  display: none;
  position: relative;
  width: 32px;
  height: 32px;
  z-index: 1001;
}

.hamburger,
.hamburger::before,
.hamburger::after {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  position: absolute;
  left: 4px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.hamburger {
  top: 50%;
  transform: translateY(-50%);
}

.hamburger::before,
.hamburger::after {
  content: '';
}

.hamburger::before { top: -7px; }
.hamburger::after { top: 7px; }

.mobile-open .hamburger {
  background: transparent;
}

.mobile-open .hamburger::before {
  top: 0;
  transform: rotate(45deg);
}

.mobile-open .hamburger::after {
  top: 0;
  transform: rotate(-45deg);
}

/* 6. HERO SECTION
   ============================================ */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 7rem var(--space-md) var(--space-xl);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.mesh-gradient {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  animation: meshShift 12s ease-in-out infinite alternate;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(circle at 50% 50%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at 50% 50%, black 20%, transparent 70%);
}

.floating-shape {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  opacity: 0.45;
  animation: floaty 8s ease-in-out infinite alternate;
}

.shape-1 {
  width: 400px;
  height: 400px;
  background: var(--emerald-500);
  top: -10%;
  right: -5%;
  animation-duration: 10s;
}

.shape-2 {
  width: 300px;
  height: 300px;
  background: var(--electric-blue-500);
  bottom: -5%;
  left: -5%;
  animation-duration: 12s;
}

.shape-3 {
  width: 200px;
  height: 200px;
  background: var(--violet-500);
  top: 40%;
  left: 50%;
  animation-duration: 14s;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  text-align: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  border-radius: 100px;
  background: rgba(16,185,129,0.1);
  border: 1px solid rgba(16,185,129,0.25);
  color: var(--emerald-300);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: var(--space-lg);
  backdrop-filter: blur(4px);
}

.badge-pulse {
  display: block;
  width: 8px;
  height: 8px;
  background: var(--emerald-500);
  border-radius: 50%;
  box-shadow: 0 0 0 0 rgba(16,185,129,0.7);
  animation: badgePulse 2s infinite;
}

.hero-headline {
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.hero-subhead {
  font-size: clamp(1.05rem, 1.4vw, 1.25rem);
  line-height: 1.7;
  max-width: 620px;
  margin: 0 auto var(--space-lg);
  color: var(--text-secondary);
}

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

.hero-stats {
  display: inline-flex;
  align-items: center;
  gap: var(--space-lg);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-lg);
  background: rgba(11,17,32,0.6);
  border: 1px solid rgba(255,255,255,0.06);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  flex-wrap: wrap;
  justify-content: center;
}

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

.stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  line-height: 1;
  background: var(--gradient-emerald-blue);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-suffix {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--electric-blue-400);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.1);
}

.hero-image-wrapper {
  position: relative;
  z-index: 2;
  margin-top: var(--space-xl);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero-image {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: var(--shadow-md), var(--shadow-glow-emerald);
}

.hero-image-glow {
  position: absolute;
  inset: -20px;
  background: radial-gradient(circle at 50% 50%, rgba(0,217,255,0.15), transparent 70%);
  z-index: -1;
  pointer-events: none;
  border-radius: 32px;
}

.holograph-dashboard {
  position: absolute;
  bottom: -30px;
  right: -20px;
  width: 260px;
  padding: var(--space-md);
  border-radius: var(--radius-md);
  background: rgba(11,17,32,0.75);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(0,217,255,0.25);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4), var(--shadow-glow-blue);
  animation: floaty 6s ease-in-out infinite alternate;
}

.dash-header {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-sm);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: var(--electric-blue-400);
  font-family: var(--font-mono);
}

.dash-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--emerald-400);
  box-shadow: 0 0 8px var(--emerald-400);
  animation: blink 2s infinite;
}

.dash-bar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.dash-track {
  flex: 1;
  height: 6px;
  background: rgba(255,255,255,0.1);
  border-radius: 3px;
  overflow: hidden;
}

.dash-fill {
  height: 100%;
  background: var(--gradient-emerald-blue);
  border-radius: 3px;
  transition: width 1.5s ease;
}

.dash-value {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-primary);
  font-weight: 700;
}

.dash-metrics {
  display: flex;
  gap: var(--space-md);
}

.dash-metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.dash-label {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.dash-num {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--emerald-300);
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  color: var(--text-muted);
}

.scroll-mouse {
  width: 24px;
  height: 38px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 8px;
}

.scroll-wheel {
  width: 4px;
  height: 8px;
  background: var(--text-muted);
  border-radius: 2px;
  animation: scrollWheel 2s infinite;
}

/* 7. ABOUT SECTION
   ============================================ */
.about {
  background: linear-gradient(180deg, var(--graphite-900) 0%, var(--graphite-800) 100%);
}

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

.about-media {
  position: relative;
}

.image-card {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.image-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  min-height: 420px;
  transition: transform var(--transition-slow);
}

.image-card:hover img {
  transform: scale(1.03);
}

.image-badge {
  position: absolute;
  bottom: var(--space-md);
  left: var(--space-md);
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.about-content .section-lead {
  color: var(--text-primary);
  font-size: 1.1rem;
  margin-bottom: var(--space-md);
}

.about-content p {
  margin-bottom: var(--space-md);
}

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

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

.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--graphite-900);
  flex-shrink: 0;
}

.feature-icon.emerald { background: var(--emerald-400); }
.feature-icon.electric { background: var(--electric-blue-400); }
.feature-icon.cyan { background: var(--electric-blue-600); color: #fff; }

.feature span {
  font-weight: 600;
  color: var(--text-primary);
}

/* 8. PROGRAMS SECTION
   ============================================ */
.programs {
  background: var(--graphite-900);
}

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

.program-card {
  padding: var(--space-xl) var(--space-md);
  text-align: center;
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
  position: relative;
  overflow: hidden;
}

.program-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md), var(--shadow-glow-emerald);
  border-color: rgba(16,185,129,0.25);
}

.program-visual {
  position: relative;
  width: 80px;
  height: 80px;
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.program-icon {
  position: relative;
  z-index: 2;
  color: var(--text-primary);
}

.program-glow {
  position: absolute;
  inset: 0;
  border-radius: 50%;
  opacity: 0.15;
  filter: blur(20px);
  z-index: 1;
  transition: opacity var(--transition-medium), transform var(--transition-medium);
}

.program-card:hover .program-glow {
  opacity: 0.35;
  transform: scale(1.2);
}

.emerald-glow { background: var(--emerald-500); }
.blue-glow { background: var(--electric-blue-500); }
.cyan-glow { background: var(--electric-blue-600); }
.violet-glow { background: var(--violet-500); }

.program-title {
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.program-desc {
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.program-link {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--electric-blue-400);
  transition: color var(--transition-fast);
}

.program-link:hover {
  color: var(--emerald-300);
}

/* 9. RECYCLING ROBOTICS LAB
   ============================================ */
.lab {
  background: linear-gradient(180deg, var(--graphite-800) 0%, var(--graphite-900) 100%);
}

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

.lab-card {
  overflow: hidden;
  transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

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

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

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

.lab-card:hover .lab-image-wrap img {
  transform: scale(1.05);
}

.lab-status {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  padding: 4px 10px;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255,255,255,0.1);
}

.status-operational {
  background: rgba(16,185,129,0.2);
  color: var(--emerald-300);
}

.status-testing {
  background: rgba(0,217,255,0.2);
  color: var(--electric-blue-400);
}

.status-prototype {
  background: rgba(139,92,246,0.2);
  color: var(--violet-400);
}

.lab-body {
  padding: var(--space-md);
}

.lab-title {
  color: var(--text-primary);
  margin-bottom: 4px;
}

.lab-author {
  font-size: 0.85rem;
  color: var(--electric-blue-400);
  margin-bottom: var(--space-sm);
  font-weight: 500;
}

.lab-desc {
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* 10. CONTACT SECTION
   ============================================ */
.contact {
  background: var(--graphite-900);
}

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

.contact-info {
  position: sticky;
  top: 7rem;
}

.contact-info .section-lead {
  color: var(--text-primary);
  font-size: 1.1rem;
  margin-bottom: var(--space-xl);
}

.contact-addresses {
  font-style: normal;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-block {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
}

.contact-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.05);
  color: var(--electric-blue-400);
  flex-shrink: 0;
}

.contact-label {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-value {
  display: block;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1.05rem;
  transition: color var(--transition-fast);
}

a.contact-value:hover {
  color: var(--emerald-300);
}

.contact-form-wrapper {
  padding: var(--space-xl);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-input {
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,0.1);
  background: rgba(255,255,255,0.03);
  color: var(--text-primary);
  font-size: 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.form-input:focus {
  outline: none;
  border-color: var(--electric-blue-500);
  box-shadow: 0 0 0 3px rgba(0,217,255,0.15);
}

.form-select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.8rem center;
  padding-right: 2.5rem;
}

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

.form-error {
  font-size: 0.8rem;
  color: #f87171;
  min-height: 1em;
}

.form-disclaimer {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-align: center;
  margin-top: var(--space-xs);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  font-weight: 700;
  letter-spacing: 0.02em;
  border-radius: var(--radius-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
  text-decoration: none;
  border: 1px solid transparent;
}

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

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background: var(--gradient-emerald-blue);
  color: #0b1120;
  box-shadow: 0 4px 20px rgba(16,185,129,0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 28px rgba(16,185,129,0.45), 0 0 20px rgba(0,217,255,0.25);
}

.btn-glass {
  background: rgba(255,255,255,0.05);
  color: var(--text-primary);
  border: 1px solid rgba(255,255,255,0.15);
  backdrop-filter: blur(8px);
}

.btn-glass:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.25);
}

.btn-sm {
  padding: 0.5rem 1.1rem;
  font-size: 0.9rem;
}

.btn-lg {
  padding: 0.9rem 2rem;
  font-size: 1rem;
}

.btn-block {
  width: 100%;
  padding: 1rem;
}

/* 11. FOOTER
   ============================================ */
.footer {
  background: var(--graphite-800);
  border-top: 1px solid rgba(255,255,255,0.06);
  padding: var(--section-padding) 0 var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

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

.footer-brand p {
  max-width: 320px;
  font-size: 0.95rem;
}

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

.footer-nav-col h4 {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
  color: var(--text-primary);
}

.footer-nav-col ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-nav-col a,
.footer-nav-col span {
  font-size: 0.95rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-nav-col a:hover {
  color: var(--electric-blue-400);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255,255,255,0.06);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* 12. KEYFRAME ANIMATIONS
   ============================================ */
@keyframes meshShift {
  0% { opacity: 1; transform: scale(1); }
  100% { opacity: 0.8; transform: scale(1.1); }
}

@keyframes floaty {
  0% { transform: translateY(0) translateX(0); }
  100% { transform: translateY(-20px) translateX(10px); }
}

@keyframes badgePulse {
  0% { box-shadow: 0 0 0 0 rgba(16,185,129,0.7); }
  70% { box-shadow: 0 0 0 10px rgba(16,185,129,0); }
  100% { box-shadow: 0 0 0 0 rgba(16,185,129,0); }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@keyframes scrollWheel {
  0% { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(8px); }
}

@keyframes dashGrow {
  from { width: 0; }
  to { width: 92%; }
}

/* 13. MEDIA QUERIES
   ============================================ */
@media (max-width: 1024px) {
  .programs-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .lab-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  :root {
    --section-padding: 4rem;
  }
  
  .mobile-toggle {
    display: block;
  }
  
  .nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: min(80vw, 300px);
    height: 100vh;
    background: rgba(11, 17, 32, 0.98);
    backdrop-filter: blur(20px);
    border-left: 1px solid rgba(255,255,255,0.08);
    flex-direction: column;
    align-items: flex-start;
    padding: 6rem var(--space-lg) var(--space-lg);
    gap: var(--space-lg);
    transition: right var(--transition-medium);
    z-index: 999;
  }
  
  .mobile-open .nav-menu {
    right: 0;
  }
  
  .nav-link {
    font-size: 1.1rem;
  }
  
  .nav-cta {
    margin-left: 0;
    margin-top: var(--space-sm);
  }
  
  .hero-stats {
    gap: var(--space-md);
    padding: var(--space-md);
  }
  
  .holograph-dashboard {
    display: none;
  }
  
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .programs-grid,
  .lab-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-navs {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .stat-divider {
    display: none;
  }
  
  .contact-info {
    position: static;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-actions .btn {
    width: 100%;
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .footer-navs {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-xs);
    text-align: center;
  }
}