/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --primary-blue: #2c5aa0;
  --accent-blue: #4a90e2;
  --light-blue: #e8f4fd;
  --warm-orange: #f39c12;
  --soft-green: #27ae60;
  --light-gray: #f8f9fa;
  --medium-gray: #6c757d;
  --dark-gray: #343a40;
  --white: #ffffff;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 8px 25px rgba(0, 0, 0, 0.15);
  --border-radius: 12px;
  --transition: all 0.3s ease;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  line-height: 1.6;
  color: var(--dark-gray);
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  min-height: 100vh;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
  color: var(--white);
  text-align: center;
  padding: 20px 20px;
  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="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.1"/><circle cx="10" cy="90" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  margin-bottom: 0;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.3rem);
  opacity: 0.9;
  font-weight: 300;
  max-width: 600px;
  margin: 0 auto;
}

/* Container */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 40px 20px;
}

/* Card Grid */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 30px;
  align-items: stretch;
}

/* Cards */
.card {
  background: var(--white);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--transition);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Pastel card backgrounds */
.card:nth-child(1) {
  background: linear-gradient(135deg, #f0f8ff 0%, #e6f3ff 100%);
}

.card:nth-child(2) {
  background: linear-gradient(135deg, #fff0f5 0%, #ffe6f0 100%);
}

.card:nth-child(3) {
  background: linear-gradient(135deg, #f0fff0 0%, #e6ffe6 100%);
}

.card:nth-child(4) {
  background: linear-gradient(135deg, #fff8f0 0%, #ffe6d6 100%);
}

.card:nth-child(5) {
  background: linear-gradient(135deg, #f8f0ff 0%, #f0e6ff 100%);
}

.card:nth-child(6) {
  background: linear-gradient(135deg, #f0ffff 0%, #e6ffff 100%);
}

.card:nth-child(7) {
  background: linear-gradient(135deg, #fff0f0 0%, #ffe6e6 100%);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.card.featured {
  grid-column: span 2;
  background: linear-gradient(135deg, var(--light-blue) 0%, var(--white) 100%);
}

.card-header {
  padding: 30px 30px 20px;
  border-bottom: 1px solid #f0f0f0;
}

.card-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--primary-blue);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.card-header p {
  color: var(--medium-gray);
  font-size: 0.95rem;
}

.card-content {
  padding: 25px 30px 30px;
}

/* Link Groups */
.link-group {
  margin-bottom: 25px;
}

.link-group:last-child {
  margin-bottom: 0;
}

.link-group h3 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--dark-gray);
  margin-bottom: 12px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--light-blue);
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Link Styles */
a {
  color: var(--accent-blue);
  text-decoration: none;
  transition: var(--transition);
  font-weight: 500;
}

a:hover {
  color: var(--primary-blue);
}

.link-primary {
  background: linear-gradient(135deg, var(--accent-blue), var(--primary-blue));
  color: var(--white) !important;
  padding: 12px 20px;
  border-radius: 8px;
  font-weight: 600;
  display: inline-block;
  margin-bottom: 15px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-size: 0.9rem;
  box-shadow: 0 2px 8px rgba(74, 144, 226, 0.3);
}

.link-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(74, 144, 226, 0.4);
  color: var(--white) !important;
}

/* Unified Link List */
.link-list {
  display: grid;
  gap: 8px;
}

.link-list a {
  padding: 12px 16px;
  background: var(--light-gray);
  border-radius: 8px;
  display: block;
  transition: var(--transition);
  border-left: 4px solid var(--accent-blue);
}

.link-list a:hover {
  background: var(--light-blue);
  transform: translateX(4px);
}

/* Footer */
.footer {
  background: var(--dark-gray);
  color: var(--white);
  text-align: center;
  padding: 30px 20px;
  margin-top: 60px;
}

.footer p {
  opacity: 0.8;
  font-size: 0.9rem;
}

/* Responsive Design */
@media (max-width: 1200px) {
  .card.featured {
    grid-column: span 1;
  }
}

@media (max-width: 768px) {
  .card-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .hero {
    padding: 60px 20px;
  }
  
  .card-header,
  .card-content {
    padding: 20px;
  }
  
  .links {
    flex-direction: column;
  }
  
  .map-links,
  .gpx-links {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 20px 15px;
  }
  
  .hero {
    padding: 40px 15px;
  }
  
  .card-header,
  .card-content {
    padding: 15px;
  }
}

/* Focus states for accessibility */
a:focus,
button:focus {
  outline: 2px solid var(--accent-blue);
  outline-offset: 2px;
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

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

.card {
  animation: fadeInUp 0.6s ease-out;
}

.card:nth-child(2) { animation-delay: 0.1s; }
.card:nth-child(3) { animation-delay: 0.2s; }
.card:nth-child(4) { animation-delay: 0.3s; }
.card:nth-child(5) { animation-delay: 0.4s; }
.card:nth-child(6) { animation-delay: 0.5s; }