/* ============================================
   SOAI Education - Modern STEM Learning Platform
   ============================================ */

/* === CSS VARIABLES === */
:root {
  /* Layout */
  --max-width: 1200px;
  --container-padding: 24px;
  
  /* Colors - Bold Tech-Education Palette */
  --color-primary: #0066FF;
  --color-primary-dark: #0052CC;
  --color-primary-light: #3385FF;
  --color-secondary: #00D9C9;
  --color-accent: #FF6B35;
  --color-purple: #7B61FF;
  
  /* Neutrals */
  --color-dark: #0A1628;
  --color-gray-900: #1A2332;
  --color-gray-800: #2D3748;
  --color-gray-700: #4A5568;
  --color-gray-600: #718096;
  --color-gray-500: #A0AEC0;
  --color-gray-400: #CBD5E0;
  --color-gray-300: #E2E8F0;
  --color-gray-200: #EDF2F7;
  --color-gray-100: #F7FAFC;
  --color-white: #FFFFFF;
  
  /* Semantic Colors */
  --color-success: #10B981;
  --color-warning: #F59E0B;
  --color-error: #EF4444;
  
  /* Typography */
  --font-display: 'Sora', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Sora', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Space Mono', 'Courier New', monospace;
  
  /* Spacing */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --space-2xl: 64px;
  --space-3xl: 96px;
  
  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(10, 22, 40, 0.04);
  --shadow-md: 0 4px 6px rgba(10, 22, 40, 0.07);
  --shadow-lg: 0 10px 15px rgba(10, 22, 40, 0.1);
  --shadow-xl: 0 20px 25px rgba(10, 22, 40, 0.15);
  --shadow-glow: 0 0 20px rgba(0, 102, 255, 0.3);
  
  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* === RESET & BASE === */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-gray-800);
  background: var(--color-white);
}

a {
  color: inherit;
  text-decoration: none;
  transition: all var(--transition-base);
}

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

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

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

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

/* === HEADER === */
.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-gray-200);
  transition: all var(--transition-base);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-sm);
  padding-bottom: var(--space-sm);
  min-height: 72px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  letter-spacing: -0.5px;
  color: var(--color-dark);
  transition: transform var(--transition-base);
}

.brand:hover {
  transform: translateY(-1px);
}

.brand-logo {
  height: 45px;
  width: auto;
}

.brand-icon {
  font-size: 24px;
  color: var(--color-primary);
  animation: pulse 2s ease-in-out infinite;
}

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

.brand-text {
  position: relative;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  z-index: 1001;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  transition: all var(--transition-base);
  border-radius: 2px;
}

.mobile-menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

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

.mobile-menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.nav a {
  font-size: 15px;
  font-weight: 500;
  color: var(--color-gray-700);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  position: relative;
}

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

.nav a.cta {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 10px 20px;
  border-radius: var(--radius-full);
  font-weight: 600;
}

.nav a.cta:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* === HERO SECTION === */
.hero {
  position: relative;
  padding: var(--space-3xl) 0 var(--space-2xl);
  background: linear-gradient(180deg, var(--color-gray-100) 0%, var(--color-white) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0, 102, 255, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  animation: float 20s ease-in-out infinite;
  z-index: 0;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(-50px, -30px); }
}

.hero-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-image-container {
  position: relative;
  z-index: 1;
}

.hero-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  animation: slideInRight 0.8s ease-out;
  object-fit: cover;
  max-height: 600px;
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 16px;
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  animation: slideDown 0.6s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(40px, 6vw, 72px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -2px;
  color: var(--color-dark);
  margin-bottom: var(--space-md);
  animation: slideUp 0.8s ease-out 0.2s both;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-description {
  font-size: 20px;
  line-height: 1.7;
  color: var(--color-gray-700);
  margin-bottom: var(--space-lg);
  max-width: 650px;
  animation: slideUp 0.8s ease-out 0.3s both;
}

.buttons {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
  margin-bottom: var(--space-xl);
  animation: slideUp 0.8s ease-out 0.4s both;
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  border: 2px solid transparent;
  white-space: nowrap;
}

.button.primary {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.button.primary:hover {
  background: var(--color-primary-dark);
  border-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.button.primary:active {
  transform: translateY(0);
}

.button.secondary {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-gray-300);
}

.button.secondary:hover {
  background: var(--color-gray-100);
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.hero-stats {
  display: flex;
  gap: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-gray-300);
  animation: fadeIn 1s ease-out 0.6s both;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.stat {
  flex: 1;
}

.stat-number {
  font-family: var(--font-display);
  font-size: 36px;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 4px;
}

.stat-label {
  font-size: 14px;
  color: var(--color-gray-600);
  font-weight: 500;
}

/* === SECTIONS === */
.programs-overview,
.how-it-works {
  padding: var(--space-3xl) 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-2xl);
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  letter-spacing: -1px;
  color: var(--color-dark);
  margin-bottom: var(--space-sm);
}

.section-header p {
  font-size: 20px;
  color: var(--color-gray-600);
  line-height: 1.6;
}

/* === CARDS === */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
}

.card {
  background: var(--color-white);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

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

.card-icon {
  font-size: 48px;
  margin-bottom: var(--space-sm);
  line-height: 1;
}

.card h3,
.card h2 {
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--space-sm);
  letter-spacing: -0.5px;
}

.card p {
  color: var(--color-gray-700);
  line-height: 1.7;
  margin-bottom: var(--space-md);
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: var(--space-md);
}

.tag {
  display: inline-block;
  padding: 6px 12px;
  background: var(--color-gray-100);
  color: var(--color-gray-700);
  font-size: 12px;
  font-weight: 600;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
}

/* Card Variations */
.card-ai:hover {
  border-color: var(--color-purple);
}

.card-coding:hover {
  border-color: var(--color-primary);
}

.card-robotics:hover {
  border-color: var(--color-accent);
}

/* === TIMELINE === */
.timeline {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 30px;
  top: 30px;
  bottom: 30px;
  width: 2px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-secondary));
}

.timeline-item {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
  position: relative;
}

.timeline-number {
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-white);
  border: 3px solid var(--color-primary);
  border-radius: 50%;
  font-family: var(--font-display);
  font-size: 24px;
  font-weight: 800;
  color: var(--color-primary);
  position: relative;
  z-index: 1;
}

.timeline-content {
  flex: 1;
  padding-top: 8px;
}

.timeline-content h3 {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: var(--space-xs);
}

.timeline-content p {
  color: var(--color-gray-700);
  line-height: 1.7;
}

/* === PROGRAM CARDS ALIGNMENT === */
.programs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.program-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.program-card picture {
  display: block;
  margin-bottom: var(--space-md);
}

.program-card picture img {
  width: 100%;
  border-radius: var(--radius-md);
  aspect-ratio: 16/9;
  object-fit: cover;
}

.program-card .card-icon {
  margin-bottom: var(--space-sm);
  width: 56px;
  height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(21, 92, 255, 0.18), rgba(0, 212, 199, 0.25));
  color: var(--color-primary);
  box-shadow: 0 12px 24px rgba(7, 15, 31, 0.12);
  font-size: 28px;
}

.program-card h2 {
  min-height: 2.8em;
  margin-bottom: var(--space-sm);
  line-height: 1.4;
}

.program-details {
  min-height: 7.5em;
  margin-bottom: var(--space-md);
}

.program-details p {
  margin-bottom: 0;
}

.program-description {
  flex-grow: 1;
  margin-bottom: var(--space-md);
}

.program-card .card-tags {
  min-height: 5em;
  margin-bottom: var(--space-md);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  align-content: flex-start;
}

.program-card .button-container {
  margin-top: auto;
}

@media (max-width: 1024px) {
  .programs-grid {
    grid-template-columns: 1fr;
  }

  .program-card h2 {
    min-height: auto;
  }

  .program-details {
    min-height: auto;
  }

  .program-card .card-tags {
    min-height: auto;
  }
}

@media (max-width: 768px) {
  .programs-grid {
    grid-template-columns: 1fr;
  }
}

/* === CTA SECTION === */
.cta-section {
  padding: var(--space-2xl) 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 500px;
  height: 500px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
}

.cta-box {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.cta-box h2 {
  font-family: var(--font-display);
  font-size: clamp(32px, 4vw, 48px);
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: var(--space-sm);
  letter-spacing: -1px;
}

.cta-box p {
  font-size: 20px;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: var(--space-lg);
  line-height: 1.6;
}

.cta-box .buttons {
  justify-content: center;
  margin-bottom: 0;
}

.cta-box .button.primary {
  background: var(--color-white);
  color: var(--color-primary);
  border-color: var(--color-white);
}

.cta-box .button.primary:hover {
  background: var(--color-gray-100);
}

.cta-box .button.secondary {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.5);
}

.cta-box .button.secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-white);
}

/* === FOOTER === */
.footer {
  background: var(--color-dark);
  color: var(--color-gray-400);
  padding: var(--space-2xl) 0 var(--space-md);
  margin-top: 0;
}

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

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

.footer-brand .brand-icon {
  color: var(--color-primary);
}

.footer-brand .brand-text {
  color: var(--color-white);
}

.footer-brand p {
  color: var(--color-gray-500);
  line-height: 1.7;
  margin-bottom: var(--space-md);
  max-width: 400px;
}

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

.social-links a {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-gray-800);
  border-radius: var(--radius-sm);
  color: var(--color-gray-400);
  transition: all var(--transition-base);
}

.social-links a:hover {
  background: var(--color-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

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

.footer-column h4 {
  color: var(--color-white);
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.footer-column a {
  display: block;
  color: var(--color-gray-500);
  font-size: 15px;
  margin-bottom: 10px;
  transition: color var(--transition-base);
}

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

.footer-newsletter-text {
  font-size: 14px;
  color: var(--color-gray-500);
  margin-bottom: var(--space-sm);
  line-height: 1.6;
}

.newsletter-form {
  display: flex;
  gap: 8px;
}

.newsletter-form input {
  flex: 1;
  padding: 10px 16px;
  background: var(--color-gray-800);
  border: 1px solid var(--color-gray-700);
  border-radius: var(--radius-sm);
  color: var(--color-white);
  font-size: 14px;
  font-family: inherit;
  transition: all var(--transition-base);
}

.newsletter-form input:focus {
  outline: none;
  border-color: var(--color-primary);
  background: var(--color-gray-900);
}

.newsletter-form input::placeholder {
  color: var(--color-gray-600);
}

.newsletter-form button {
  padding: 10px 20px;
  background: var(--color-primary);
  color: var(--color-white);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 14px;
  transition: all var(--transition-base);
}

.newsletter-form button:hover {
  background: var(--color-primary-dark);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-gray-800);
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer-bottom p {
  font-size: 14px;
  color: var(--color-gray-600);
}

.footer-bottom a {
  color: var(--color-gray-500);
  transition: color var(--transition-base);
}

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

.footer-legal {
  display: flex;
  gap: var(--space-md);
}

.footer-legal a {
  font-size: 14px;
}

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

@media (max-width: 768px) {
  :root {
    --container-padding: 20px;
    --space-xl: 40px;
    --space-2xl: 48px;
    --space-3xl: 64px;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    padding: var(--space-md);
    border-bottom: 1px solid var(--color-gray-200);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    transition: all var(--transition-base);
    pointer-events: none;
  }
  
  .nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }
  
  .nav a {
    padding: 12px;
    text-align: center;
  }
  
  .nav a.cta {
    margin-top: var(--space-xs);
  }
  
  .hero {
    padding: var(--space-2xl) 0 var(--space-xl);
  }
  
  .hero-layout {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }
  
  .hero-image-container {
    order: -1; /* Show image above text on mobile */
  }
  
  .hero-image {
    max-height: 400px;
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--space-md);
  }
  
  .stat-number {
    font-size: 28px;
  }
  
  .grid {
    grid-template-columns: 1fr;
  }
  
  .timeline::before {
    left: 20px;
  }
  
  .timeline-number {
    width: 48px;
    height: 48px;
    font-size: 20px;
  }
  
  .footer-links {
    grid-template-columns: 1fr;
  }
  
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  
  .buttons {
    flex-direction: column;
  }
  
  .button {
    text-align: center;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 36px;
  }
  
  .hero-description {
    font-size: 18px;
  }
  
  .section-header h2 {
    font-size: 32px;
  }
  
  .newsletter-form {
    flex-direction: column;
  }
  
  .newsletter-form button {
    width: 100%;
  }
}

/* === ACCESSIBILITY === */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* === POP ENHANCEMENTS === */
:root {
  --color-primary: #155cff;
  --color-primary-dark: #0b45c7;
  --color-primary-light: #4e7dff;
  --color-secondary: #00d4c7;
  --color-accent: #ff7a1a;
  --color-purple: #ff4d6d;
  --color-dark: #070f1f;
  --color-gray-900: #141c2b;
  --color-gray-800: #1f2a3b;
  --color-gray-700: #3a475f;
  --color-gray-600: #5b6b86;
  --color-gray-500: #8b97ad;
  --color-gray-400: #c4cde0;
  --color-gray-300: #d8e0f0;
  --color-gray-200: #e6ecf8;
  --color-gray-100: #f1f5ff;
}

body {
  background:
    radial-gradient(1000px 600px at 5% -10%, rgba(0, 212, 199, 0.18) 0%, transparent 60%),
    radial-gradient(900px 600px at 95% 0%, rgba(21, 92, 255, 0.2) 0%, transparent 55%),
    linear-gradient(180deg, #f7f9ff 0%, #ffffff 35%, #f4f6fb 100%);
}

main {
  position: relative;
}

.header {
  border-bottom: none;
  box-shadow: 0 8px 24px rgba(7, 15, 31, 0.08);
}

.header::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-primary), var(--color-accent));
  opacity: 0.8;
}

.nav a {
  font-weight: 600;
}

.nav a::after {
  content: '';
  position: absolute;
  left: 12px;
  right: 12px;
  bottom: 4px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-primary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.nav a:hover::after,
.nav a.active::after {
  transform: scaleX(1);
}

.nav a.cta::after {
  display: none;
}

.hero {
  background:
    radial-gradient(800px 400px at 10% -10%, rgba(0, 212, 199, 0.25) 0%, transparent 70%),
    linear-gradient(135deg, rgba(21, 92, 255, 0.12) 0%, rgba(0, 212, 199, 0.12) 45%, #ffffff 100%);
}

.hero::before {
  width: 720px;
  height: 720px;
  top: -120px;
  right: -120px;
  background: radial-gradient(circle, rgba(21, 92, 255, 0.18) 0%, transparent 70%);
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(90deg, rgba(7, 15, 31, 0.04) 1px, transparent 1px),
    linear-gradient(180deg, rgba(7, 15, 31, 0.04) 1px, transparent 1px);
  background-size: 36px 36px;
  opacity: 0.35;
  pointer-events: none;
}

.hero-content {
  max-width: 620px;
}

.hero-image {
  border: 1px solid var(--color-gray-200);
  box-shadow: 0 24px 50px rgba(7, 15, 31, 0.2);
}

.hero-badge {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid rgba(21, 92, 255, 0.25);
  box-shadow: 0 10px 24px rgba(7, 15, 31, 0.12);
}

.buttons {
  gap: var(--space-md);
}

.button {
  position: relative;
  overflow: hidden;
}

.button.primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  border-color: transparent;
  box-shadow: 0 18px 32px rgba(21, 92, 255, 0.25);
}

.button.primary::after {
  content: '';
  position: absolute;
  top: -80%;
  left: -30%;
  width: 40%;
  height: 260%;
  background: rgba(255, 255, 255, 0.35);
  transform: translateX(0) skewX(-18deg);
  transition: transform var(--transition-slow);
  pointer-events: none;
}

.button.primary:hover::after {
  transform: translateX(260%) skewX(-18deg);
}

.button.secondary {
  background: rgba(255, 255, 255, 0.75);
  border-color: rgba(21, 92, 255, 0.2);
  box-shadow: 0 12px 24px rgba(7, 15, 31, 0.1);
}

.hero-stats {
  background: rgba(255, 255, 255, 0.75);
  border: 1px solid var(--color-gray-200);
  border-top: none;
  border-radius: var(--radius-lg);
  padding: var(--space-md) var(--space-lg);
  box-shadow: 0 12px 30px rgba(7, 15, 31, 0.12);
}

.section-header h2 {
  position: relative;
  display: inline-block;
  padding-bottom: 12px;
}

.section-header h2::after {
  content: '';
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  bottom: 0;
  width: 72px;
  height: 4px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-primary));
  border-radius: var(--radius-full);
}

.card {
  background: linear-gradient(180deg, #ffffff 0%, #f5f8ff 100%);
  border: 1px solid var(--color-gray-200);
  box-shadow: 0 16px 32px rgba(7, 15, 31, 0.12);
}

.card::before {
  transform: scaleX(1);
  height: 6px;
  opacity: 0.75;
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 24px 44px rgba(7, 15, 31, 0.18);
}

.card:hover::before {
  height: 8px;
  opacity: 1;
}

.card-icon {
  width: 56px;
  height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 16px;
  background: linear-gradient(135deg, rgba(21, 92, 255, 0.18), rgba(0, 212, 199, 0.25));
  color: var(--color-primary);
  box-shadow: 0 12px 24px rgba(7, 15, 31, 0.12);
}

.tag {
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--color-gray-200);
}

.timeline::before {
  width: 3px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-secondary), var(--color-accent));
}

.timeline-number {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: var(--color-white);
  border: none;
  box-shadow: 0 12px 28px rgba(7, 15, 31, 0.2);
}

.cta-section {
  background:
    radial-gradient(600px 300px at 80% -20%, rgba(255, 255, 255, 0.2) 0%, transparent 70%),
    linear-gradient(135deg, #0b45c7 0%, #155cff 45%, #00c4b7 100%);
}

.cta-box {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.25);
  padding: var(--space-xl);
  border-radius: var(--radius-xl);
  box-shadow: 0 24px 50px rgba(7, 15, 31, 0.25);
  backdrop-filter: blur(10px);
}

.footer {
  position: relative;
  background: linear-gradient(180deg, #0b1324 0%, #070b16 100%);
}

.footer::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-secondary), var(--color-primary), var(--color-accent));
}

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

.newsletter-form input {
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

.programs-overview .video-card {
  border: 1px solid var(--color-gray-200);
  background: linear-gradient(180deg, #ffffff 0%, #f6f9ff 100%);
  box-shadow: 0 16px 30px rgba(7, 15, 31, 0.12);
}

.programs-overview .video-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 40px rgba(7, 15, 31, 0.18);
}

.programs-overview .video-thumbnail {
  background: linear-gradient(135deg, rgba(21, 92, 255, 0.2), rgba(0, 212, 199, 0.2));
}

.programs-overview .play-icon {
  background: rgba(255, 255, 255, 0.95);
}

.programs-overview .contact-form {
  border: 1px solid var(--color-gray-200);
  box-shadow: 0 22px 40px rgba(7, 15, 31, 0.15);
}

.programs-overview .contact-form-container {
  gap: var(--space-2xl);
}

.programs-overview .contact-form input,
.programs-overview .contact-form select,
.programs-overview .contact-form textarea {
  border: 1px solid var(--color-gray-300);
  box-shadow: inset 0 0 0 1px rgba(21, 92, 255, 0.04);
}

@media (max-width: 768px) {
  .hero-stats {
    padding: var(--space-md);
  }

  .cta-box {
    padding: var(--space-lg);
  }
}

/* === HEADER WRAPPER & REGISTRATION BANNER === */
.header-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
}

.header-wrapper .header {
  position: relative;
  top: auto;
}

.registration-banner {
  background: linear-gradient(135deg, var(--color-accent) 0%, #ff4d6d 100%);
  color: var(--color-white);
  padding: 10px 0;
  position: relative;
}

.registration-banner .container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
}

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

.banner-text {
  font-size: 14px;
  text-align: center;
}

.banner-text strong {
  font-weight: 700;
}

.banner-btn {
  display: inline-block;
  background: var(--color-white);
  color: var(--color-accent);
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  white-space: nowrap;
  text-decoration: none;
}

.banner-btn:hover {
  background: var(--color-gray-100);
  transform: scale(1.05);
}


/* Mobile adjustments for banner */
@media (max-width: 768px) {
  .registration-banner {
    padding: 12px 0;
  }

  .banner-content {
    flex-direction: column;
    gap: var(--space-xs);
  }

  .banner-text {
    font-size: 13px;
  }

  .banner-btn {
    padding: 6px 16px;
    font-size: 12px;
  }

  /* Adjust nav position when banner is present */
  .nav {
    top: 120px;
  }
}

/* === EVENTS PAGE === */
.events-hero {
  padding: var(--space-2xl) 0 var(--space-xl);
  text-align: center;
}

.events-hero .hero-content {
  max-width: 700px;
  margin: 0 auto;
  text-align: center;
}

.events-hero h1 {
  font-size: clamp(32px, 4vw, 48px);
  margin-bottom: var(--space-xs);
}

.events-hero .hero-description {
  margin-left: auto;
  margin-right: auto;
}

.events-section {
  padding: var(--space-xl) 0 var(--space-2xl);
}

.events-toolbar {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
  justify-content: flex-end;
}

.sort-label {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-gray-700);
}

.sort-select {
  padding: 8px 16px;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--color-gray-800);
  background: var(--color-white);
  cursor: pointer;
  transition: border-color var(--transition-base);
}

.sort-select:focus {
  outline: none;
  border-color: var(--color-primary);
}

.events-table-wrapper {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-gray-200);
  background: var(--color-white);
  box-shadow: 0 16px 32px rgba(7, 15, 31, 0.08);
}

.events-table {
  width: 100%;
  border-collapse: collapse;
  table-layout: fixed;
}

.events-table thead {
  background: var(--color-gray-100);
}

.events-table th {
  padding: 16px 24px;
  text-align: left;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--color-gray-600);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 2px solid var(--color-gray-200);
}

.events-table th:nth-child(1) { width: 28%; }
.events-table th:nth-child(2) { width: 18%; }
.events-table th:nth-child(3) { width: 22%; }
.events-table th:nth-child(4) { width: 20%; }
.events-table th:nth-child(5) { width: 12%; }

.events-table td {
  padding: 20px 24px;
  font-size: 15px;
  color: var(--color-gray-800);
  border-bottom: 1px solid var(--color-gray-200);
  vertical-align: middle;
}

.events-table td:nth-child(1) {
  font-weight: 600;
}

.events-table td:nth-child(3),
.events-table td:nth-child(4) {
  white-space: nowrap;
}

.events-table tr:last-child td {
  border-bottom: none;
}

.events-table tr:hover td {
  background: var(--color-gray-100);
}

.topic-badge {
  display: inline-block;
  padding: 4px 12px;
  background: linear-gradient(135deg, rgba(21, 92, 255, 0.1), rgba(0, 212, 199, 0.1));
  color: var(--color-primary);
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
}

.register-btn {
  padding: 10px 24px !important;
  font-size: 14px !important;
  white-space: nowrap;
}

/* Mobile cards (hidden on desktop, shown only at mobile breakpoint) */
.events-cards {
  display: none;
}

.events-table td:last-child {
  text-align: center;
}

.event-card {
  padding: var(--space-md) var(--space-lg);
}

.event-card h3 {
  margin-bottom: var(--space-sm);
}

.event-card-details {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-md);
}

.event-meta {
  font-size: 14px;
  color: var(--color-gray-600);
}

@media (max-width: 768px) {
  .events-table-wrapper {
    display: none;
  }

  .events-cards {
    display: grid;
    gap: var(--space-md);
  }

  .event-card .register-btn {
    width: 100%;
    text-align: center;
    justify-content: center;
  }
}