:root {
  /* Light Theme Variables */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --text-primary: #111111;
  --text-secondary: #444444;
  --text-muted: #777777;
  --gray-border: rgba(0, 0, 0, 0.1);
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-border: rgba(0, 0, 0, 0.05);
  
  --glass-blur: blur(12px);
  --glass-radius: 1rem;
  --glass-radius-sm: 0.5rem;
  
  --green-primary: #2e7d32;
  --green-dark: #1b5e20;
  --green-light: #4caf50;
  
  --gold-accent: #d4af37;
  --gold-light: #f4d03f;
  
  --black-deep: #111111;
  --white-pure: #ffffff;
  
  --shadow-lg: 0 8px 20px rgba(0, 0, 0, 0.15);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

[data-theme="dark"] {
  --bg-primary: #0a0a0a;
  --bg-secondary: #141414;
  --text-primary: #f8f9fa;
  --text-secondary: #aaaaaa;
  --text-muted: #777777;
  --gray-border: rgba(255, 255, 255, 0.1);
  --glass-bg: rgba(17, 17, 17, 0.6);
  --glass-border: rgba(255, 255, 255, 0.05);
  
  --white-pure: #0a0a0a;
  --gray-light: #141414;
  
  --shadow-lg: 0 8px 20px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  margin: 0;
  line-height: 1.6;
  transition: background var(--transition-normal), color var(--transition-normal);
}

a {
  color: var(--green-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--gold-accent);
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--glass-radius);
  box-shadow: var(--shadow-sm);
  padding: 2rem;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal), background var(--transition-normal), border var(--transition-normal);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.glass-card-light {
  background: var(--white-pure);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--gray-border);
  border-radius: var(--glass-radius);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
}

.glass-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--glass-radius-sm);
  font-weight: 700;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background: var(--green-primary);
  color: var(--white-pure);
  border-color: var(--green-primary);
}

.btn-primary:hover {
  background: var(--green-dark);
  border-color: var(--green-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(46, 125, 50, 0.4);
}

.btn-gold {
  background: transparent;
  color: var(--gold-accent);
  border-color: var(--gold-accent);
}

.btn-gold:hover {
  background: var(--gold-accent);
  color: var(--black-deep);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.3);
}

.btn-gold-solid {
  background: var(--gold-accent);
  color: var(--black-deep);
  border-color: var(--gold-accent);
}

.btn-gold-solid:hover {
  background: var(--gold-light);
  border-color: var(--gold-light);
  transform: translateY(-2px);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.text-gold {
  color: var(--gold-accent);
}

.text-green {
  color: var(--green-primary);
}

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

.badge-gold {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  background: linear-gradient(135deg, var(--gold-accent), var(--gold-light));
  color: var(--black-deep);
  border-radius: 2rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.section-title {
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 1rem;
  background: linear-gradient(135deg, var(--green-primary), var(--gold-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.2rem;
  margin-bottom: 3rem;
}

.grid-courses {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}

.form-input {
  width: 100%;
  padding: 0.875rem 1rem;
  background: var(--white-pure);
  border: 1px solid var(--gray-border);
  border-radius: var(--glass-radius-sm);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--green-primary);
  box-shadow: 0 0 0 3px rgba(46, 125, 50, 0.2);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
}

.modal-backdrop.active {
  opacity: 1;
  visibility: visible;
}

.modal-content {
  background: var(--white-pure);
  border: 1px solid var(--gray-border);
  border-radius: var(--glass-radius);
  padding: 2.5rem;
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.9);
  transition: transform var(--transition-normal);
}

.nav-glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 0.75rem 0;
  transition: background var(--transition-normal), border var(--transition-normal);
}

.nav-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  text-decoration: none;
}

.logo-5am {
  color: var(--green-primary);
}

.logo-tech {
  color: var(--gold-accent);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-menu a {
  color: var(--text-secondary);
  font-weight: 600;
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav-auth {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.nav-auth a {
  color: var(--text-secondary);
  font-weight: 600;
}

.nav-auth a:hover {
  color: var(--green-primary);
}

.theme-toggle-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  color: var(--text-primary);
  padding: 0.6rem;
  border-radius: 0.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
}

.theme-toggle-btn:hover {
  background: var(--gray-border);
  transform: rotate(15deg);
}

[data-theme="dark"] .sun-icon { display: none !important; }
[data-theme="dark"] .moon-icon { display: block !important; }
[data-theme="light"] .moon-icon { display: none !important; }
[data-theme="light"] .sun-icon { display: block !important; }

.card-course {
  background: var(--white-pure);
  border: 1px solid var(--gray-border);
  border-radius: var(--glass-radius);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.card-course:hover {
  border-color: var(--green-primary);
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
}

.card-course-image {
  height: 200px;
  background-color: var(--gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.card-course-body {
  padding: 2rem;
}

.footer-glass {
  background: var(--bg-secondary);
  border-top: 1px solid var(--gray-border);
  padding: 6rem 0 3rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.footer-title {
  color: var(--text-primary);
  font-weight: 800;
  margin-bottom: 2rem;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 1rem;
}

.footer-links a {
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.footer-links a:hover {
  color: var(--green-primary);
  padding-left: 5px;
}

.footer-bottom {
  border-top: 1px solid var(--gray-border);
  padding-top: 2.5rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

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

.animate-fade-in {
  animation: fadeIn 0.6s ease forwards;
}

@media (max-width: 768px) {
  .section-title {
    font-size: 2.2rem;
  }
  
  .grid-courses {
    grid-template-columns: 1fr;
  }
  
  .nav-menu {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
}