:root {
  --bg-primary: #172439;
  --bg-secondary: #22324c;
  --bg-card: rgba(255, 255, 255, 0.06);
  --bg-card-hover: rgba(255, 255, 255, 0.1);
  --accent-primary: #009bdb;
  --accent-secondary: #00c7c7;
  --accent-warm: #e8ded1;
  --text-primary: #f2f7fa;
  --text-secondary: #a7bccc;
  --gradient-primary: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  --gradient-overlay: linear-gradient(180deg, rgba(23, 36, 57, 0) 0%, rgba(23, 36, 57, 1) 100%);
  
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.15);
  --shadow-elevated: 0 20px 40px rgba(0, 0, 0, 0.25);
  --glass-border: 1px solid rgba(255, 255, 255, 0.1);
  --glass-border-light: 1px solid rgba(255, 255, 255, 0.2);
  
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 50px;
  
  --space-y-desktop: 100px;
  --space-y-tablet: 70px;
  --space-y-mobile: 50px;
  
  --max-width: 1400px;
  --max-width-core: 1250px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

/* Layout Utilities */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: var(--space-y-desktop) 0;
}

.text-center { text-align: center; }
.text-accent { color: var(--accent-secondary); }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }

/* Typography */
h1, h2, h3, h4 {
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: -1px; }
h2 { font-size: clamp(2rem, 3.5vw, 2.75rem); }
h3 { font-size: 1.5rem; }
p { color: var(--text-secondary); font-size: 1.1rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  font-weight: 500;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  font-size: 1.05rem;
}

.btn-primary {
  background: var(--gradient-primary);
  color: #fff;
  box-shadow: 0 4px 15px rgba(0, 155, 219, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 155, 219, 0.4);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: var(--glass-border);
  backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  background: var(--bg-card-hover);
  border-color: rgba(255,255,255,0.2);
}

/* Header */
.header-wrapper {
  position: fixed;
  top: 20px;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 0 24px;
}

.header {
  max-width: var(--max-width);
  margin: 0 auto;
  background: rgba(34, 50, 76, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: var(--glass-border);
  border-radius: var(--radius-pill);
  padding: 12px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: var(--shadow-soft);
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-icon {
  width: 24px;
  height: 24px;
  background: var(--gradient-primary);
  border-radius: 50%;
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-secondary);
  transition: var(--transition);
}

.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }

/* Hero Section */
.hero {
  padding-top: calc(var(--space-y-desktop) + 80px);
  min-height: 90vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at top right, rgba(0, 155, 219, 0.15), transparent 50%),
              radial-gradient(circle at bottom left, rgba(0, 199, 199, 0.1), transparent 50%);
  z-index: -1;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content h1 {
  margin-bottom: 24px;
}

.hero-content p {
  margin-bottom: 32px;
  font-size: 1.2rem;
  max-width: 90%;
}

.hero-actions {
  display: flex;
  gap: 16px;
}

.hero-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-elevated);
}

.hero-visual::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  border: var(--glass-border-light);
  pointer-events: none;
}

.hero-visual img {
  width: 100%;
  height: auto;
  aspect-ratio: 4/3;
  object-fit: cover;
}

/* Core Experience / Main Feature */
.core-experience {
  max-width: var(--max-width-core);
  margin: 0 auto;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: 60px;
  border: var(--glass-border);
  box-shadow: var(--shadow-elevated);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  gap: 40px;
  z-index: 10;
}

.core-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto;
}

.core-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.core-card {
  background: var(--bg-card);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  text-align: center;
  transition: var(--transition);
}

.core-card:hover {
  background: var(--bg-card-hover);
  transform: translateY(-5px);
}

.core-icon {
  width: 60px;
  height: 60px;
  margin: 0 auto 20px;
  background: rgba(0, 155, 219, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-secondary);
}

.core-icon svg {
  width: 30px;
  height: 30px;
}

.core-card h3 {
  margin-bottom: 12px;
  font-size: 1.25rem;
}

.core-card p {
  font-size: 0.95rem;
  margin-bottom: 20px;
}

/* Feature Grids */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  margin-bottom: 16px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 32px;
}

.feature-card {
  background: var(--bg-card);
  border: var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  border-color: rgba(255,255,255,0.2);
  box-shadow: var(--shadow-soft);
}

.feature-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.feature-content {
  padding: 24px;
}

.feature-content h3 {
  margin-bottom: 12px;
}

/* Stats Section */
.stats-section {
  background: var(--bg-secondary);
  border-top: var(--glass-border);
  border-bottom: var(--glass-border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat-item h3 {
  font-size: 3rem;
  color: var(--accent-secondary);
  margin-bottom: 8px;
}

.stat-item p {
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.85rem;
}

/* Trust Section */
.trust-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.trust-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
  background: var(--bg-card);
  padding: 24px;
  border-radius: var(--radius-md);
  border: var(--glass-border);
}

.trust-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.trust-icon svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: #fff;
  stroke-width: 2;
}

/* CTA Banner */
.cta-banner {
  background: var(--gradient-primary);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  color: #fff;
  box-shadow: var(--shadow-elevated);
}

.cta-banner h2 {
  color: #fff;
  margin-bottom: 16px;
}

.cta-banner p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 32px;
  font-size: 1.2rem;
}

.cta-banner .btn {
  background: #fff;
  color: var(--accent-primary);
}

.cta-banner .btn:hover {
  background: var(--bg-primary);
  color: #fff;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  padding: 80px 0 40px;
  border-top: var(--glass-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-brand p {
  margin-top: 16px;
  max-width: 300px;
}

.footer-col h4 {
  margin-bottom: 24px;
  color: #fff;
}

.footer-col ul li {
  margin-bottom: 12px;
}

.footer-col ul li a {
  color: var(--text-secondary);
}

.footer-col ul li a:hover {
  color: var(--accent-secondary);
}

.footer-bottom {
  text-align: center;
  padding-top: 32px;
  border-top: var(--glass-border);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Page Specific: Schedule */
.schedule-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: var(--glass-border);
}

.schedule-table th,
.schedule-table td {
  padding: 20px;
  text-align: left;
  border-bottom: var(--glass-border);
}

.schedule-table th {
  background: rgba(255,255,255,0.05);
  font-weight: 600;
  color: var(--text-primary);
}

.schedule-table tr:hover td {
  background: rgba(255,255,255,0.02);
}

/* Page Specific: Contact Forms */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
}

.form-control {
  width: 100%;
  padding: 14px 16px;
  background: rgba(0,0,0,0.1);
  border: var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: inherit;
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent-secondary);
  background: rgba(0,0,0,0.2);
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

/* Page Specific: Legal Pages */
.legal-content {
  max-width: 800px;
  margin: 0 auto;
  background: var(--bg-card);
  padding: 40px;
  border-radius: var(--radius-md);
  border: var(--glass-border);
}

.legal-content h2 {
  margin: 32px 0 16px;
  font-size: 1.5rem;
}

.legal-content p, .legal-content ul {
  margin-bottom: 16px;
}

.legal-content ul {
  padding-left: 20px;
  list-style: disc;
}

/* Responsive */
@media (max-width: 992px) {
  .hero-grid, .trust-grid {
    grid-template-columns: 1fr;
  }
  .core-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .section {
    padding: var(--space-y-tablet) 0;
  }
  .hero {
    text-align: center;
    padding-top: 120px;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-content p {
    margin: 0 auto 32px;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none; /* In a real app, implement hamburger menu */
  }
  .core-grid {
    grid-template-columns: 1fr;
  }
  .stats-grid, .footer-grid {
    grid-template-columns: 1fr;
  }
  .section {
    padding: var(--space-y-mobile) 0;
  }
  .core-experience {
    padding: 30px 20px;
  }
  .cta-banner {
    padding: 40px 20px;
  }
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.75rem; }
}