@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;500;600;700;900&family=Exo+2:wght@300;400;500;600;700&display=swap');

:root {
  /* Color Palette - Deep Blues */
  --primary-dark: #0B1628;
  --secondary-dark: #102037;
  --tertiary-dark: #0E1A2F;
  --accent-deep: #142840;
  --steel-navy: #1C304A;
  
  /* Quantum Accent Colors */
  --quantum-cyan: #00D4FF;
  --quantum-blue: #0099FF;
  --quantum-purple: #6B4FE8;
  --quantum-teal: #00FFC8;
  --membrane-glow: rgba(0, 212, 255, 0.3);
  
  /* Typography */
  --font-primary: 'Orbitron', sans-serif;
  --font-secondary: 'Exo 2', sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-md: 1.125rem;
  --font-size-lg: 1.5rem;
  --font-size-xl: 2rem;
  --font-size-2xl: 2.5rem;
  --font-size-3xl: 3rem;
  
  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 20px var(--membrane-glow);
  --shadow-quantum: 0 0 40px rgba(0, 212, 255, 0.4);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  --transition-membrane: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===================================
   RESET & BASE
   =================================== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-secondary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: #E8F1FF;
  background: var(--primary-dark);
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* ===================================
   QUANTUM MEMBRANE BACKGROUND
   =================================== */

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 30%, rgba(0, 212, 255, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(107, 79, 232, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 50% 50%, rgba(0, 153, 255, 0.04) 0%, transparent 70%);
  z-index: 0;
  pointer-events: none;
  animation: membraneBreath 8s ease-in-out infinite;
}

@keyframes membraneBreath {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

.quantum-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
  opacity: 0.4;
}

/* Neural Network Pattern */
.neural-network {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: 
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 1;
  pointer-events: none;
  animation: neuralShift 20s linear infinite;
}

@keyframes neuralShift {
  0% { transform: translate(0, 0); opacity: 0.3; }
  50% { opacity: 0.5; }
  100% { transform: translate(60px, 60px); opacity: 0.3; }
}

/* ===================================
   PARTICLE SYSTEM
   =================================== */

.particle {
  position: fixed;
  width: 3px;
  height: 3px;
  background: var(--quantum-cyan);
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  box-shadow: 0 0 10px var(--quantum-cyan);
  animation: particleFloat var(--duration, 15s) linear infinite;
  animation-delay: var(--delay, 0s);
}

@keyframes particleFloat {
  0% {
    opacity: 0;
    transform: translateY(100vh) translateX(0) scale(0);
  }
  10% {
    opacity: 0.8;
    transform: translateY(85vh) translateX(20px) scale(1);
  }
  50% {
    opacity: 1;
    transform: translateY(50vh) translateX(-30px) scale(1.2);
  }
  90% {
    opacity: 0.6;
    transform: translateY(10vh) translateX(40px) scale(0.8);
  }
  100% {
    opacity: 0;
    transform: translateY(-10vh) translateX(0) scale(0);
  }
}

/* ===================================
   MAIN CONTAINER
   =================================== */

.site-wrapper {
  position: relative;
  z-index: 10;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container-fluid {
  width: 100%;
  padding: 0 var(--space-md);
}

/* ===================================
   HEADER - QUANTUM DESIGN
   =================================== */

.main-header {
  position: relative;
  background: linear-gradient(135deg, rgba(11, 22, 40, 0.95), rgba(16, 32, 55, 0.9));
  backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 212, 255, 0.2);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
  z-index: 1000;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-md) 0;
  max-width: 1200px;
  margin: 0 auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

.logo {
  font-family: var(--font-primary);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--quantum-cyan);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  position: relative;
  transition: var(--transition-base);
  text-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}

.logo:hover {
  color: var(--quantum-teal);
  text-shadow: 0 0 30px rgba(0, 255, 200, 0.7);
  transform: translateY(-2px);
}

/* ===================================
   NAVIGATION - BURGER MENU
   =================================== */

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
  z-index: 1001;
}

.nav-toggle span {
  width: 28px;
  height: 3px;
  background: var(--quantum-cyan);
  border-radius: var(--radius-full);
  transition: var(--transition-base);
  box-shadow: 0 0 10px var(--membrane-glow);
}

.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(8px, 8px);
}

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

.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -7px);
}

.main-nav ul {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
  align-items: center;
}

.main-nav a {
  color: #B8D4FF;
  text-decoration: none;
  font-family: var(--font-secondary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-md);
  transition: var(--transition-base);
  position: relative;
  overflow: hidden;
}

.main-nav a::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--quantum-cyan), var(--quantum-purple));
  transition: var(--transition-base);
}

.main-nav a:hover {
  color: var(--quantum-cyan);
  background: rgba(0, 212, 255, 0.1);
}

.main-nav a:hover::before {
  width: 100%;
}

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

.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-3xl) 0;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, rgba(0, 153, 255, 0.15), transparent 70%);
  animation: heroGlow 6s ease-in-out infinite;
  z-index: -1;
}

@keyframes heroGlow {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.1); }
}

.hero-content {
  max-width: 900px;
  z-index: 2;
  animation: fadeInUp 1s ease-out;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero h1 {
  font-family: var(--font-primary);
  font-size: var(--font-size-3xl);
  font-weight: 900;
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--quantum-cyan), var(--quantum-purple), var(--quantum-teal));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 1.2;
  text-shadow: 0 0 40px rgba(0, 212, 255, 0.3);
}

.hero p {
  font-size: var(--font-size-md);
  color: #C8DFFF;
  margin-bottom: var(--space-xl);
  line-height: 1.8;
}

/* ===================================
   BUTTONS
   =================================== */

.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  font-family: var(--font-secondary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  border-radius: var(--radius-lg);
  transition: var(--transition-base);
  cursor: pointer;
  border: none;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, var(--quantum-cyan), var(--quantum-blue));
  color: var(--primary-dark);
  box-shadow: var(--shadow-glow);
}

.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: var(--transition-slow);
}

.btn-primary:hover::before {
  left: 100%;
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-quantum);
}

.btn-secondary {
  background: transparent;
  color: var(--quantum-cyan);
  border: 2px solid var(--quantum-cyan);
}

.btn-secondary:hover {
  background: var(--quantum-cyan);
  color: var(--primary-dark);
  box-shadow: var(--shadow-glow);
  transform: translateY(-3px);
}

/* ===================================
   SECTIONS
   =================================== */

.section {
  padding: var(--space-3xl) 0;
  position: relative;
}

.section-title {
  font-family: var(--font-primary);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-xl);
  color: var(--quantum-cyan);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  position: relative;
  display: inline-block;
  width: 100%;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--quantum-cyan), transparent);
  box-shadow: 0 0 15px var(--membrane-glow);
}

.section-subtitle {
  text-align: center;
  font-size: var(--font-size-md);
  color: #B8D4FF;
  max-width: 700px;
  margin: 0 auto var(--space-xl);
  line-height: 1.7;
}

/* ===================================
   CARDS & GRID
   =================================== */

.grid {
  display: grid;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.card {
  background: linear-gradient(135deg, rgba(16, 32, 55, 0.6), rgba(14, 26, 47, 0.8));
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  transition: var(--transition-membrane);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.1), transparent 50%);
  opacity: 0;
  transition: var(--transition-membrane);
  pointer-events: none;
}

.card:hover::before {
  opacity: 1;
  animation: cardGlow 2s ease-in-out infinite;
}

@keyframes cardGlow {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-10%, -10%); }
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-quantum);
  border-color: var(--quantum-cyan);
}

.card-icon {
  font-size: var(--font-size-3xl);
  color: var(--quantum-cyan);
  margin-bottom: var(--space-md);
  display: block;
  text-shadow: 0 0 20px var(--membrane-glow);
}

.card h3 {
  font-family: var(--font-primary);
  font-size: var(--font-size-lg);
  color: var(--quantum-cyan);
  margin-bottom: var(--space-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card p {
  color: #C8DFFF;
  font-size: var(--font-size-sm);
  line-height: 1.7;
}

/* ===================================
   COURSE CARDS
   =================================== */

.course-card {
  background: linear-gradient(135deg, rgba(16, 32, 55, 0.7), rgba(14, 26, 47, 0.9));
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: var(--transition-membrane);
  position: relative;
}

.course-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, transparent, rgba(0, 212, 255, 0.1));
  opacity: 0;
  transition: var(--transition-base);
  pointer-events: none;
}

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

.course-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-quantum);
  border-color: var(--quantum-cyan);
}

.course-header {
  padding: var(--space-lg);
  background: rgba(0, 212, 255, 0.05);
  border-bottom: 1px solid rgba(0, 212, 255, 0.2);
}

.course-card h3 {
  font-family: var(--font-primary);
  font-size: var(--font-size-lg);
  color: var(--quantum-cyan);
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
}

.course-level {
  display: inline-block;
  padding: var(--space-xs) var(--space-sm);
  background: rgba(107, 79, 232, 0.2);
  color: var(--quantum-purple);
  font-size: var(--font-size-xs);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
}

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

.course-description {
  color: #C8DFFF;
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.course-features {
  list-style: none;
  margin-bottom: var(--space-md);
}

.course-features li {
  color: #B8D4FF;
  font-size: var(--font-size-sm);
  padding: var(--space-xs) 0;
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.course-features li::before {
  content: '▸';
  color: var(--quantum-cyan);
  font-weight: bold;
}

.course-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-md);
  border-top: 1px solid rgba(0, 212, 255, 0.15);
}

.course-price {
  font-family: var(--font-primary);
  font-size: var(--font-size-xl);
  color: var(--quantum-teal);
  font-weight: 700;
}

/* ===================================
   CONTACT FORM
   =================================== */

.contact-section {
  background: linear-gradient(135deg, rgba(16, 32, 55, 0.4), rgba(11, 22, 40, 0.6));
  border-radius: var(--radius-2xl);
  padding: var(--space-2xl);
  margin: var(--space-xl) 0;
  border: 1px solid rgba(0, 212, 255, 0.2);
  position: relative;
  overflow: hidden;
}

.contact-section::before {
  content: '';
  position: absolute;
  top: -100%;
  left: -100%;
  width: 300%;
  height: 300%;
  background: radial-gradient(circle, rgba(0, 212, 255, 0.08), transparent 40%);
  animation: contactGlow 10s linear infinite;
  pointer-events: none;
}

@keyframes contactGlow {
  0% { transform: translate(0, 0); }
  100% { transform: translate(30%, 30%); }
}

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

.contact-info h2 {
  font-family: var(--font-primary);
  color: var(--quantum-cyan);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
}

.contact-info p {
  color: #C8DFFF;
  margin-bottom: var(--space-lg);
  line-height: 1.7;
}

.contact-details {
  list-style: none;
  margin-bottom: var(--space-lg);
}

.contact-details li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  color: #B8D4FF;
  font-size: var(--font-size-sm);
}

.contact-details i {
  color: var(--quantum-cyan);
  font-size: var(--font-size-md);
  min-width: 24px;
}

.contact-form {
  background: rgba(14, 26, 47, 0.6);
  padding: var(--space-xl);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(0, 212, 255, 0.15);
}

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

.form-group label {
  display: block;
  color: var(--quantum-cyan);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-sm);
  background: rgba(11, 22, 40, 0.8);
  border: 1px solid rgba(0, 212, 255, 0.3);
  border-radius: var(--radius-md);
  color: #E8F1FF;
  font-family: var(--font-secondary);
  font-size: var(--font-size-sm);
  transition: var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--quantum-cyan);
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
  background: rgba(11, 22, 40, 1);
}

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

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.form-checkbox input[type="checkbox"] {
  width: auto;
  margin-top: 4px;
  cursor: pointer;
  accent-color: var(--quantum-cyan);
}

.form-checkbox label {
  color: #B8D4FF;
  font-size: var(--font-size-xs);
  line-height: 1.5;
  margin: 0;
  text-transform: none;
  letter-spacing: normal;
  cursor: pointer;
}

/* ===================================
   MAP
   =================================== */

.map-container {
  width: 100%;
  height: 400px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 2px solid rgba(0, 212, 255, 0.3);
  margin-top: var(--space-lg);
  box-shadow: var(--shadow-lg);
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
  filter: grayscale(30%) brightness(0.9) contrast(1.1);
}

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

.main-footer {
  background: linear-gradient(135deg, rgba(11, 22, 40, 0.95), rgba(16, 32, 55, 0.9));
  border-top: 1px solid rgba(0, 212, 255, 0.2);
  padding: var(--space-lg) 0;
  margin-top: var(--space-3xl);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-logo {
  font-family: var(--font-primary);
  font-size: var(--font-size-md);
  color: var(--quantum-cyan);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.footer-links {
  display: flex;
  list-style: none;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.footer-links a {
  color: #B8D4FF;
  text-decoration: none;
  font-size: var(--font-size-xs);
  transition: var(--transition-base);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer-links a:hover {
  color: var(--quantum-cyan);
}

.footer-copy {
  width: 100%;
  text-align: center;
  color: #8CA3C0;
  font-size: var(--font-size-xs);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(0, 212, 255, 0.1);
}

/* ===================================
   PRIVACY POPUP
   =================================== */

.privacy-popup {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(135deg, rgba(11, 22, 40, 0.98), rgba(16, 32, 55, 0.98));
  backdrop-filter: blur(20px);
  padding: var(--space-md);
  border-top: 2px solid var(--quantum-cyan);
  box-shadow: 0 -4px 30px rgba(0, 0, 0, 0.7);
  z-index: 10000;
  transform: translateY(100%);
  transition: var(--transition-slow);
}

.privacy-popup.show {
  transform: translateY(0);
}

.privacy-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.privacy-text {
  flex: 1;
  min-width: 250px;
  color: #C8DFFF;
  font-size: var(--font-size-xs);
  line-height: 1.6;
}

.privacy-text a {
  color: var(--quantum-cyan);
  text-decoration: underline;
}

.privacy-actions {
  display: flex;
  gap: var(--space-sm);
}

/* ===================================
   404 PAGE
   =================================== */

.error-page {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.error-content h1 {
  font-family: var(--font-primary);
  font-size: 8rem;
  color: var(--quantum-cyan);
  margin-bottom: var(--space-md);
  text-shadow: 0 0 40px var(--membrane-glow);
  animation: errorPulse 2s ease-in-out infinite;
}

@keyframes errorPulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.7; transform: scale(1.05); }
}

.error-content h2 {
  font-size: var(--font-size-2xl);
  color: #E8F1FF;
  margin-bottom: var(--space-md);
}

.error-content p {
  color: #B8D4FF;
  margin-bottom: var(--space-xl);
}

/* ===================================
   THANK YOU PAGE
   =================================== */

.thankyou-page {
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.thankyou-content {
  max-width: 600px;
}

.thankyou-icon {
  font-size: 5rem;
  color: var(--quantum-teal);
  margin-bottom: var(--space-lg);
  animation: successBounce 1s ease-out;
}

@keyframes successBounce {
  0% { transform: scale(0); opacity: 0; }
  50% { transform: scale(1.2); }
  100% { transform: scale(1); opacity: 1; }
}

.thankyou-content h1 {
  font-family: var(--font-primary);
  font-size: var(--font-size-2xl);
  color: var(--quantum-cyan);
  margin-bottom: var(--space-md);
}

.thankyou-content p {
  color: #C8DFFF;
  margin-bottom: var(--space-xl);
  line-height: 1.7;
}

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

@media (max-width: 768px) {
  :root {
    --font-size-3xl: 2rem;
    --font-size-2xl: 1.75rem;
    --font-size-xl: 1.5rem;
    --space-3xl: 3rem;
    --space-2xl: 2.5rem;
  }

  .nav-toggle {
    display: flex;
  }

  .main-nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: linear-gradient(135deg, rgba(11, 22, 40, 0.98), rgba(16, 32, 55, 0.98));
    backdrop-filter: blur(20px);
    padding: var(--space-3xl) var(--space-lg);
    transition: var(--transition-slow);
    box-shadow: -4px 0 30px rgba(0, 0, 0, 0.7);
    z-index: 999;
  }

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

  .main-nav ul {
    flex-direction: column;
    gap: var(--space-md);
  }

  .main-nav a {
    font-size: var(--font-size-base);
    display: block;
    padding: var(--space-sm);
  }

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

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 70vh;
    padding: var(--space-2xl) 0;
  }

  .hero h1 {
    font-size: var(--font-size-2xl);
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-3xl: 1.75rem;
    --font-size-2xl: 1.5rem;
    --font-size-xl: 1.25rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 2rem;
    --space-3xl: 2.5rem;
  }

  .container {
    padding: 0 var(--space-sm);
  }

  .header-content {
    padding-left: var(--space-sm);
    padding-right: var(--space-sm);
  }

  .logo {
    font-size: var(--font-size-md);
  }

  .hero h1 {
    font-size: var(--font-size-xl);
  }

  .hero p {
    font-size: var(--font-size-sm);
  }

  .btn {
    padding: var(--space-xs) var(--space-md);
    font-size: var(--font-size-xs);
  }

  .contact-section {
    padding: var(--space-lg);
  }

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

  .map-container {
    height: 300px;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }

  .privacy-content {
    flex-direction: column;
    text-align: center;
  }

  .privacy-actions {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 320px) {
  :root {
    /* Font Sizes */
    --font-size-3xl: 1.5rem;
    --font-size-2xl: 1.25rem;
    --font-size-xl: 1rem;
    --font-size-lg: 0.875rem;
    --font-size-md: 0.75rem;
    --font-size-sm: 0.7rem;
    --font-size-xs: 0.625rem;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 0.75rem;
    --space-lg: 1rem;
    --space-xl: 1.5rem;
    --space-2xl: 2rem;
    --space-3xl: 2.5rem;
  }

  /* Containers & Layout */
  .container, .container-fluid {
    padding: 0 var(--space-xs);
  }
  .section-title {
    font-size: 15px;
  }
  .header-content {
    align-items: center;
    gap: var(--space-xs);
    padding-left: var(--space-xs);
    padding-right: var(--space-xs);
  }

  .logo {
    font-size: var(--font-size-md);
  }

  .main-nav ul {
    gap: var(--space-sm);
  }
  .contact-info {
    font-size: 10px;
  }
  .main-nav a {
    font-size: var(--font-size-xs);
    padding: var(--space-xs);
  }

  .hero {
    min-height: 60vh;
    padding: var(--space-xl) var(--space-xs);
  }

  .hero h1 {
    font-size: var(--font-size-xl);
    line-height: 1.2;
  }

  .hero p {
    font-size: var(--font-size-xs);
    line-height: 1.4;
  }

  .btn {
    padding: var(--space-xs) var(--space-sm);
    font-size: var(--font-size-xs);
  }

  .section {
    padding: var(--space-xl) var(--space-xs);
  }

  .grid-2, .grid-3 {
    grid-template-columns: 1fr;
    gap: var(--space-sm);
  }

  .card, .course-card {
    padding: var(--space-sm);
  }

  .contact-section {
    padding: var(--space-lg);
  }

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

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

  .map-container {
    height: 250px;
  }

  .footer-content {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }

  .footer-links {
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-xs);
  }

  .privacy-content {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }

  .privacy-actions {
    justify-content: center;
    width: 100%;
    gap: var(--space-xs);
  }

  /* Adjust 404 / Thank You pages */
  .error-content h1 {
    font-size: 4rem;
  }

  .error-content h2, .thankyou-content h1 {
    font-size: var(--font-size-xl);
  }

  .thankyou-icon {
    font-size: 3.5rem;
  }

  /* Adjust cards icons & text */
  .card-icon, .course-header h3 {
    font-size: var(--font-size-lg);
  }

  .card h3, .course-card h3 {
    font-size: var(--font-size-md);
  }

  .card p, .course-description, .course-features li {
    font-size: var(--font-size-xs);
  }
}


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

.text-center { text-align: center; }
.text-cyan { color: var(--quantum-cyan); }
.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.hidden { display: none; }
.visible { display: block; }