:root {
  /* Light Mode (Option A: Warm off-white) */
  --bg: #fdfaf6;
  --text: #1a1a1a;
  --text-muted: #666666;
  --accent: #0055ff;
  --accent-soft: rgba(0, 85, 255, 0.05);
  --border: rgba(0, 0, 0, 0.08);
  --card-bg: #ffffff;
  --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.04);
  --header-bg: rgba(253, 250, 246, 0.8);
}

[data-theme="dark"] {
  /* Dark Mode (Option B: Very dark neutral) */
  --bg: #0a0a0a;
  --text: #e0e0e0;
  --text-muted: #a0a0a0;
  --accent: #00f2ff;
  --accent-soft: rgba(0, 242, 255, 0.1);
  --border: rgba(255, 255, 255, 0.1);
  --card-bg: #141414;
  --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --header-bg: rgba(10, 10, 10, 0.8);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Manrope', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

h1, h2, h3, .syne {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

a {
  text-decoration: none;
  color: inherit;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.8;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--header-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

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

.logo {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.04em;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  padding: 8px 12px;
  border-radius: 999px;
  cursor: pointer;
  color: var(--text);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.theme-toggle:hover {
  background-color: var(--accent-soft);
  border-color: var(--accent);
}

/* Hero Section */
.hero {
  padding: 80px 0 60px;
  text-align: left;
}

.hero .eyebrow {
  display: block;
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2.5rem, 8vw, 4.5rem);
  margin-bottom: 24px;
  max-width: 15ch;
}

.hero p {
  font-size: clamp(1.1rem, 2.5vw, 1.35rem);
  color: var(--text-muted);
  max-width: 600px;
  margin-bottom: 40px;
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  border-radius: 12px;
  font-weight: 700;
  font-size: 1rem;
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--text);
  color: var(--bg);
}

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

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

/* Featured Destinations */
.section-title {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--text-muted);
  margin-bottom: 32px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.featured {
  padding: 40px 0 80px;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.card {
  background-color: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 240px;
  transition: all 0.3s ease;
  box-shadow: var(--card-shadow);
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.card h3 {
  font-size: 1.75rem;
  margin-bottom: 12px;
}

.card p {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 24px;
}

.card-link {
  font-weight: 700;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--accent);
}

/* Route Index */
.route-index {
  padding: 80px 0;
  background-color: var(--accent-soft);
}

.index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 48px;
}

.index-category h4 {
  font-size: 1.1rem;
  margin-bottom: 24px;
  color: var(--text);
  opacity: 0.6;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.index-list {
  list-style: none;
}

.index-item {
  margin-bottom: 16px;
}

.index-item a {
  display: block;
  font-size: 1.25rem;
  font-weight: 600;
}

.index-item span {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Footer */
footer {
  padding: 60px 0;
  border-top: 1px solid var(--border);
  background-color: var(--bg);
  color: var(--text);
}

footer .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: 32px;
}

.footer-brand {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 1.5rem;
}

.whatsapp-cta {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 16px 32px;
  background-color: #25D366;
  color: white;
  border-radius: 999px;
  font-weight: 700;
}

.whatsapp-cta:hover {
  background-color: #128C7E;
  transform: scale(1.05);
}

/* Mobile Adjustments */
@media (max-width: 768px) {
  .hero {
    padding: 60px 0 40px;
  }
  
  .hero h1 {
    font-size: 3rem;
  }

  .featured-grid {
    grid-template-columns: 1fr;
  }

  .card {
    min-height: auto;
  }
}