@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg-color: #0b0f19;
  --bg-gradient: radial-gradient(circle at top right, #1a233a 0%, #0b0f19 50%, #05080f 100%);
  --text-color: #f1f5f9;
  --text-muted: #94a3b8;
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --accent: #10b981;
  
  --card-bg: rgba(30, 41, 59, 0.5);
  --card-border: rgba(255, 255, 255, 0.05);
  --input-bg: rgba(15, 23, 42, 0.6);
  --input-border: rgba(255, 255, 255, 0.1);
  --nav-bg: rgba(11, 15, 25, 0.8);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 20px rgba(59, 130, 246, 0.3);
  
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
}

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

body {
  font-family: 'Inter', sans-serif;
  background-color: var(--bg-color);
  background: var(--bg-gradient);
  background-attachment: fixed;
  color: var(--text-color);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.2;
  color: #fff;
  margin-bottom: 1rem;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
}

h3 {
  font-size: 1.5rem;
  color: #e2e8f0;
}

p {
  color: var(--text-muted);
  font-size: 1.1rem;
  margin-bottom: 1.5rem;
}

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

a:hover {
  color: #60a5fa;
}

/* Base Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 5%;
}

main {
  flex: 1;
  padding-top: 6rem; /* Account for navbar */
}

/* Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-border);
  z-index: 1000;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.5rem;
  color: #fff;
  text-decoration: none;
}

.logo img {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
}

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

.nav-links a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 1rem;
  position: relative;
}

.nav-links a:hover,
.nav-links a.active {
  color: #fff;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

/* Hero Section */
.hero {
  padding: 6rem 0 4rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4rem;
}

.hero-content {
  flex: 1;
  max-width: 600px;
}

.hero-visual {
  flex: 1;
  display: flex;
  justify-content: center;
  position: relative;
}

.hero-visual::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 120%;
  height: 120%;
  background: radial-gradient(circle, rgba(59,130,246,0.15) 0%, rgba(59,130,246,0) 70%);
  z-index: -1;
}

.hero-image {
  max-width: 100%;
  height: auto;
  transform: perspective(1000px) rotateY(-10deg) rotateX(5deg);
  transition: transform 0.5s ease;
  filter: drop-shadow(0 20px 30px rgba(0,0,0,0.5));
}

.hero-image:hover {
  transform: perspective(1000px) rotateY(0deg) rotateX(0deg);
}

.gradient-text {
  background: linear-gradient(135deg, #fff 0%, #9ca3af 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Store Buttons */
.store-buttons {
  display: flex;
  gap: 1rem;
  margin-top: 2.5rem;
}

.store-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255,255,255,0.1);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-lg);
  color: #fff;
  text-decoration: none;
  font-weight: 500;
  transition: all 0.3s ease;
  backdrop-filter: blur(10px);
}

.store-btn svg {
  width: 24px;
  height: 24px;
}

.store-btn:hover {
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-2px);
  border-color: rgba(255,255,255,0.2);
  box-shadow: var(--shadow-md);
}

.store-btn-text {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  line-height: 1.1;
}

.store-btn-small {
  font-size: 0.65rem;
  text-transform: uppercase;
  color: var(--text-muted);
}

.store-btn-large {
  font-size: 1.1rem;
  font-weight: 600;
}

/* Features Section */
.features {
  padding: 5rem 0;
}

.features-header {
  text-align: center;
  margin-bottom: 4rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

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

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 2rem;
  backdrop-filter: blur(10px);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0;
  transition: opacity 0.3s ease;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  border-color: rgba(59, 130, 246, 0.3);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 1.5rem;
}

.feature-icon svg {
  width: 24px;
  height: 24px;
}

/* Screenshots Showcase */
.showcase {
  padding: 5rem 0;
  background: linear-gradient(180deg, rgba(15,23,42,0) 0%, rgba(15,23,42,0.4) 100%);
}

.showcase-grid {
  display: flex;
  justify-content: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.showcase-img {
  width: 250px;
  border-radius: 2rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
  border: 6px solid #1e293b;
  transition: transform 0.3s ease;
}

.showcase-img:hover {
  transform: scale(1.05);
}

/* Pages Layouts */
.page-header {
  padding: 6rem 0 3rem;
  border-bottom: 1px solid var(--card-border);
  margin-bottom: 3rem;
}

.content-section {
  width: 90%;
  max-width: 800px;
  margin: 0 auto 5rem;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding: 3rem;
  backdrop-filter: blur(10px);
}

.content-section h2, 
.content-section h3 {
  margin-top: 2rem;
  color: #fff;
}

.content-section h2:first-child,
.content-section h3:first-child {
  margin-top: 0;
}

.content-section p, 
.content-section ul, 
.content-section ol {
  margin-bottom: 1.5rem;
  color: var(--text-color);
}

.content-section li {
  margin-left: 1.5rem;
  margin-bottom: 0.5rem;
}

/* Footer */
footer {
  background: rgba(8, 11, 18, 0.9);
  padding: 4rem 0 2rem;
  border-top: 1px solid var(--card-border);
  margin-top: auto;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  color: #fff;
}

.footer-logo img {
  width: 24px;
  height: 24px;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.footer-links a:hover {
  color: #fff;
}

.copyright {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.05);
}

.footer-attribution {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  margin-bottom: 2rem;
  text-align: center;
}

.footer-attribution p {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.national-rail-logo {
  height: 40px;
  width: auto;
  opacity: 0.8;
  transition: opacity 0.3s ease, transform 0.3s ease;
  filter: drop-shadow(0 0 8px rgba(255,255,255,0.1));
}

.national-rail-logo:hover {
  opacity: 1;
  transform: scale(1.05);
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .hero {
    flex-direction: column;
    text-align: center;
    padding: 4rem 0;
  }
  
  .store-buttons {
    justify-content: center;
    flex-wrap: wrap;
  }

  h1 {
    font-size: 2.5rem;
  }
  
  .content-section {
    padding: 1.5rem;
  }
  
  .nav-links {
    display: none; /* simple hidden links on mobile for static, or adjust if adding a menu */
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}