/* Rails Website - Modern Dark Theme */
:root {
  --bg-primary: #0f0f14;
  --bg-secondary: #1a1a24;
  --bg-card: #22222e;
  --bg-hover: #2a2a3a;
  --accent-gold: #d4a853;
  --accent-rust: #b35a3c;
  --accent-steam: #8b9a7d;
  --text-primary: #e8e8ec;
  --text-secondary: #9a9ab0;
  --text-muted: #6a6a80;
  --border: #3a3a4a;
  --gradient-hero: linear-gradient(135deg, #1a1a24 0%, #0f0f14 50%, #1a1510 100%);
  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(212, 168, 83, 0.1);
}

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

html {
  scroll-behavior: smooth;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

a {
  color: var(--accent-gold);
  text-decoration: none;
  transition: color 0.3s ease;
}

a:hover {
  color: #e8c170;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Navigation */
.navbar {
  background: rgba(15, 15, 20, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  padding: 1rem 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-gold);
}

.logo img {
  width: 40px;
  height: 40px;
  border-radius: 8px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 500;
  transition: color 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-gold);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  font-size: 0.95rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-rust));
  color: #fff;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(212, 168, 83, 0.3);
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--accent-gold);
}

.btn-google {
  background: #fff;
  color: #333;
}

.btn-google:hover {
  background: #f5f5f5;
}

.btn-google img {
  width: 20px;
  height: 20px;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--gradient-hero);
  padding-top: 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.02)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-text h1 {
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-gold));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-text p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 500px;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin-top: 3rem;
}

.stat {
  text-align: center;
}

.stat-value {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--accent-gold);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.train-showcase {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  perspective: 1000px;
}

.train-card {
  background: var(--bg-card);
  border-radius: 12px;
  padding: 1rem;
  border: 1px solid var(--border);
  transition: all 0.4s ease;
  cursor: pointer;
}

.train-card:hover {
  transform: translateY(-8px) rotateX(5deg);
  box-shadow: var(--shadow-glow);
  border-color: var(--accent-gold);
}

.train-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
}

/* Sections */
.section {
  padding: 6rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  margin-bottom: 1rem;
}

.section-header p {
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.feature-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 2rem;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.feature-card:hover {
  border-color: var(--accent-gold);
  box-shadow: var(--shadow-card);
}

.feature-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-rust));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.feature-card h3 {
  margin-bottom: 1rem;
}

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

/* Trainopedia */
.trainopedia-section {
  background: var(--bg-secondary);
}

.trains-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.train-info-card {
  background: var(--bg-card);
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.train-info-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-gold);
  box-shadow: var(--shadow-card);
}

.train-image {
  padding: 2rem;
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
  display: flex;
  justify-content: center;
}

.train-image img {
  width: 120px;
  height: 120px;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.train-info-card:hover .train-image img {
  transform: scale(1.1);
}

.train-details {
  padding: 1.5rem;
}

.train-details h4 {
  margin-bottom: 0.5rem;
  color: var(--accent-gold);
}

.train-details p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.train-era {
  display: inline-block;
  background: var(--bg-secondary);
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 0.75rem;
}

/* Bonuses Section */
.bonuses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.bonus-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 1.5rem;
  display: flex;
  gap: 1.5rem;
  align-items: center;
  border: 1px solid var(--border);
  transition: all 0.3s ease;
}

.bonus-card:hover {
  border-color: var(--accent-steam);
  box-shadow: var(--shadow-card);
}

.bonus-icon {
  flex-shrink: 0;
}

.bonus-icon img {
  width: 58px;
  height: 70px;
  object-fit: contain;
}

.bonus-info h4 {
  color: var(--accent-steam);
  margin-bottom: 0.5rem;
}

.bonus-info p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* User Profile Dropdown */
.user-profile {
  position: relative;
}

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid var(--accent-gold);
  transition: all 0.3s ease;
}

.user-avatar:hover {
  box-shadow: 0 0 20px rgba(212, 168, 83, 0.4);
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  min-width: 200px;
  box-shadow: var(--shadow-card);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.3s ease;
}

.user-profile:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  padding: 0.75rem 1rem;
  color: var(--text-secondary);
  transition: all 0.2s ease;
}

.dropdown-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.dropdown-item:first-child {
  border-radius: 12px 12px 0 0;
}

.dropdown-item:last-child {
  border-radius: 0 0 12px 12px;
}

.dropdown-divider {
  border-top: 1px solid var(--border);
  margin: 0.25rem 0;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 3rem 0 1.5rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-primary);
  font-weight: 600;
}

.footer-logo img {
  width: 32px;
  height: 32px;
  border-radius: 6px;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

.footer-bottom {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Responsive */
@media (max-width: 1024px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .hero-text p {
    margin: 0 auto 2rem;
  }
  
  .hero-stats {
    justify-content: center;
  }
  
  .train-showcase {
    max-width: 400px;
    margin: 0 auto;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  
  .mobile-menu-btn {
    display: block;
  }
  
  .nav-links.active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    padding: 1rem;
    border-bottom: 1px solid var(--border);
  }
  
  .hero-stats {
    flex-direction: column;
    gap: 1rem;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }

/* Page specific - About */
.about-section {
  background: var(--bg-secondary);
}

.about-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.info-card {
  background: var(--bg-card);
  border-radius: 16px;
  padding: 2rem;
  border: 1px solid var(--border);
}

.info-card h3 {
  color: var(--accent-gold);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

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

.info-card ul {
  color: var(--text-secondary);
  list-style: none;
  margin-top: 1rem;
}

.info-card li {
  padding: 0.5rem 0;
  padding-left: 1.25rem;
  position: relative;
}

.info-card li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent-rust);
}

/* Tab navigation for trainopedia */
.tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  justify-content: center;
}

.tab-btn {
  padding: 0.75rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 30px;
  color: var(--text-secondary);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

.tab-btn:hover {
  border-color: var(--accent-gold);
  color: var(--text-primary);
}

.tab-btn.active {
  background: linear-gradient(135deg, var(--accent-gold), var(--accent-rust));
  border-color: transparent;
  color: #fff;
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Loading state */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 4rem;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent-gold);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}