/* ============================================
   China Local Hiking - Main Stylesheet
   Color Scheme: Dark Green #142800, Bright Green #5de372, White
   Style: Modern, Card-based, Image-first (AllTrails inspired)
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  --color-dark-green: #142800;
  --color-bright-green: #5de372;
  --color-bright-green-hover: #4cc761;
  --color-white: #ffffff;
  --color-off-white: #f8faf8;
  --color-light-gray: #e8ede8;
  --color-medium-gray: #6b7c6b;
  --color-dark-gray: #2d3a2d;
  --color-card-shadow: rgba(20, 40, 0, 0.08);
  --color-card-shadow-hover: rgba(20, 40, 0, 0.16);
  --color-overlay: rgba(20, 40, 0, 0.55);

  --font-primary: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-heading: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  --max-width: 1200px;
  --header-height: 72px;
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-primary);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-dark-green);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

a:hover {
  color: var(--color-bright-green-hover);
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  outline: none;
}

/* --- Utility Classes --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

.section-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-dark-green);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-medium-gray);
  margin-bottom: 40px;
  max-width: 600px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* --- Header / Navigation --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-light-gray);
  z-index: 1000;
  transition: background var(--transition-normal);
}

.site-header.scrolled {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 2px 20px rgba(20, 40, 0, 0.06);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--color-dark-green);
}

.nav-logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-dark-green);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-bright-green);
  font-size: 18px;
}

.nav-logo-text {
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.02em;
}

.nav-logo-text span {
  color: var(--color-bright-green);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--color-dark-green);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
  position: relative;
}

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

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-bright-green);
  border-radius: 1px;
}

.nav-cta {
  background: var(--color-bright-green);
  color: var(--color-dark-green) !important;
  padding: 8px 20px;
  border-radius: var(--radius-xl);
  font-weight: 600 !important;
  transition: background var(--transition-fast), transform var(--transition-fast) !important;
}

.nav-cta:hover {
  background: var(--color-bright-green-hover) !important;
  color: var(--color-dark-green) !important;
  transform: translateY(-1px);
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-dark-green);
  border-radius: 2px;
  transition: var(--transition-fast);
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--header-height) + 40px) 20px 60px;
  overflow: hidden;
  background: var(--color-dark-green);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0.45;
  transition: opacity 1s ease;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    rgba(20, 40, 0, 0.3) 0%,
    rgba(20, 40, 0, 0.6) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(93, 227, 114, 0.15);
  color: var(--color-bright-green);
  padding: 6px 16px;
  border-radius: var(--radius-xl);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
  border: 1px solid rgba(93, 227, 114, 0.25);
}

.hero h1 {
  font-family: var(--font-heading);
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero h1 span {
  color: var(--color-bright-green);
}

.hero p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-search {
  display: flex;
  gap: 0;
  max-width: 520px;
  margin: 0 auto;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.hero-search input {
  flex: 1;
  padding: 16px 20px;
  border: none;
  font-size: 1rem;
  font-family: var(--font-primary);
  color: var(--color-dark-green);
  background: transparent;
  outline: none;
}

.hero-search input::placeholder {
  color: var(--color-medium-gray);
}

.hero-search button {
  padding: 16px 28px;
  background: var(--color-bright-green);
  color: var(--color-dark-green);
  font-weight: 700;
  font-size: 0.95rem;
  transition: background var(--transition-fast);
}

.hero-search button:hover {
  background: var(--color-bright-green-hover);
}

/* Stats bar below hero */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 48px;
}

.hero-stat {
  text-align: center;
}

.hero-stat-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-bright-green);
}

.hero-stat-label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.6);
  margin-top: 2px;
}

/* --- Trail Cards --- */
.trail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.trail-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 2px 12px var(--color-card-shadow);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: block;
}

.trail-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 32px var(--color-card-shadow-hover);
  color: inherit;
}

.trail-card-image {
  position: relative;
  height: 220px;
  overflow: hidden;
}

.trail-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.trail-card:hover .trail-card-image img {
  transform: scale(1.05);
}

.trail-card-difficulty {
  position: absolute;
  top: 12px;
  left: 12px;
  padding: 4px 12px;
  border-radius: var(--radius-xl);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.difficulty-easy {
  background: rgba(93, 227, 114, 0.9);
  color: var(--color-dark-green);
}

.difficulty-moderate {
  background: rgba(255, 183, 77, 0.9);
  color: var(--color-dark-green);
}

.difficulty-hard {
  background: rgba(239, 83, 80, 0.9);
  color: var(--color-white);
}

.trail-card-region {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: rgba(20, 40, 0, 0.7);
  color: var(--color-white);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
}

.trail-card-body {
  padding: 20px;
}

.trail-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-dark-green);
  margin-bottom: 8px;
  letter-spacing: -0.01em;
}

.trail-card-meta {
  display: flex;
  gap: 16px;
  margin-bottom: 12px;
  font-size: 0.85rem;
  color: var(--color-medium-gray);
}

.trail-card-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}

.trail-card-desc {
  font-size: 0.9rem;
  color: var(--color-dark-gray);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* --- Why Choose Us --- */
.why-section {
  background: var(--color-off-white);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.why-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  box-shadow: 0 2px 12px var(--color-card-shadow);
  transition: transform var(--transition-normal);
}

.why-card:hover {
  transform: translateY(-2px);
}

.why-card-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 20px;
  background: rgba(93, 227, 114, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
}

.why-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-dark-green);
  margin-bottom: 10px;
}

.why-card p {
  font-size: 0.9rem;
  color: var(--color-medium-gray);
  line-height: 1.6;
}

/* --- Trail Detail Page --- */
.trail-hero {
  position: relative;
  height: 50vh;
  min-height: 400px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.trail-hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
}

.trail-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(20,40,0,0.8) 0%, rgba(20,40,0,0.2) 60%);
}

.trail-hero-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 20px;
}

.trail-hero-content h1 {
  font-size: 2.8rem;
  font-weight: 800;
  color: var(--color-white);
  letter-spacing: -0.02em;
  margin-bottom: 8px;
}

.trail-hero-location {
  font-size: 1rem;
  color: rgba(255,255,255,0.7);
  margin-bottom: 20px;
}

.trail-stats-bar {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.trail-stat-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.trail-stat-value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-bright-green);
}

.trail-stat-label {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.6);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Detail content area */
.trail-detail-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 20px 80px;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 40px;
}

.trail-main {
  min-width: 0;
}

.trail-sidebar {
  position: sticky;
  top: calc(var(--header-height) + 20px);
  align-self: start;
}

/* Permit alert box */
.permit-alert {
  background: rgba(255, 183, 77, 0.1);
  border: 1px solid rgba(255, 183, 77, 0.3);
  border-left: 4px solid #FFB74D;
  border-radius: var(--radius-md);
  padding: 20px 24px;
  margin-bottom: 32px;
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.permit-alert-icon {
  font-size: 24px;
  flex-shrink: 0;
  line-height: 1;
}

.permit-alert h3 {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-dark-green);
  margin-bottom: 4px;
}

.permit-alert p {
  font-size: 0.9rem;
  color: var(--color-dark-gray);
  line-height: 1.5;
}

.permit-alert a {
  color: var(--color-bright-green);
  font-weight: 600;
}

/* Content sections */
.detail-section {
  margin-bottom: 40px;
}

.detail-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-dark-green);
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.detail-section p {
  font-size: 1rem;
  color: var(--color-dark-gray);
  line-height: 1.75;
  margin-bottom: 16px;
}

.highlight-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.highlight-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
  background: var(--color-off-white);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  color: var(--color-dark-green);
}

.highlight-list li::before {
  content: '✓';
  color: var(--color-bright-green);
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}

/* Gear list */
.gear-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
}

.gear-list li {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  font-size: 0.9rem;
  color: var(--color-dark-gray);
}

.gear-list li::before {
  content: '🎒';
  font-size: 1rem;
  flex-shrink: 0;
}

/* Difficulty indicator */
.difficulty-indicator {
  display: flex;
  gap: 6px;
  margin-bottom: 12px;
}

.difficulty-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-light-gray);
}

.difficulty-dot.active {
  background: var(--color-bright-green);
}

.difficulty-dot.active.hard {
  background: #EF5350;
}

.difficulty-dot.active.moderate {
  background: #FFB74D;
}

/* Reviews */
.review-card {
  background: var(--color-off-white);
  border-radius: var(--radius-md);
  padding: 24px;
  margin-bottom: 16px;
}

.review-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.review-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-bright-green);
  color: var(--color-dark-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1rem;
}

.review-name {
  font-weight: 600;
  color: var(--color-dark-green);
  font-size: 0.95rem;
}

.review-date {
  font-size: 0.8rem;
  color: var(--color-medium-gray);
}

.review-stars {
  color: #FFB74D;
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.review-text {
  font-size: 0.9rem;
  color: var(--color-dark-gray);
  line-height: 1.6;
}

/* Sidebar */
.sidebar-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 2px 12px var(--color-card-shadow);
  margin-bottom: 20px;
}

.sidebar-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-dark-green);
  margin-bottom: 16px;
}

.sidebar-info-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-light-gray);
  font-size: 0.9rem;
}

.sidebar-info-row:last-child {
  border-bottom: none;
}

.sidebar-info-label {
  color: var(--color-medium-gray);
}

.sidebar-info-value {
  font-weight: 600;
  color: var(--color-dark-green);
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px 24px;
  background: var(--color-bright-green);
  color: var(--color-dark-green);
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  transition: background var(--transition-fast), transform var(--transition-fast);
  text-align: center;
}

.btn-primary:hover {
  background: var(--color-bright-green-hover);
  color: var(--color-dark-green);
  transform: translateY(-1px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 14px 24px;
  background: var(--color-dark-green);
  color: var(--color-white);
  border-radius: var(--radius-md);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  transition: background var(--transition-fast), transform var(--transition-fast);
  text-align: center;
}

.btn-secondary:hover {
  color: var(--color-white);
  transform: translateY(-1px);
  opacity: 0.9;
}

/* --- Permits Page --- */
.page-hero {
  background: var(--color-dark-green);
  padding: calc(var(--header-height) + 60px) 20px 60px;
  text-align: center;
}

.page-hero h1 {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-white);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.page-hero p {
  font-size: 1.1rem;
  color: rgba(255,255,255,0.7);
  max-width: 600px;
  margin: 0 auto;
}

.permits-content {
  max-width: 800px;
  margin: 0 auto;
  padding: 60px 20px;
}

.permit-section {
  margin-bottom: 48px;
}

.permit-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-dark-green);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-bright-green);
  display: inline-block;
}

.permit-section p,
.permit-section li {
  font-size: 1rem;
  color: var(--color-dark-gray);
  line-height: 1.75;
  margin-bottom: 12px;
}

.permit-section ul {
  padding-left: 0;
}

.permit-section li {
  padding-left: 24px;
  position: relative;
}

.permit-section li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--color-bright-green);
  font-weight: 700;
}

/* Mountain permit cards */
.permit-mountain-list {
  display: grid;
  gap: 16px;
}

.permit-mountain-card {
  background: var(--color-off-white);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.permit-mountain-icon {
  width: 48px;
  height: 48px;
  background: var(--color-bright-green);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.permit-mountain-info h4 {
  font-weight: 700;
  color: var(--color-dark-green);
  margin-bottom: 4px;
}

.permit-mountain-info p {
  font-size: 0.9rem;
  color: var(--color-medium-gray);
  margin-bottom: 0;
}

.permit-required-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-left: 8px;
}

.tag-required {
  background: rgba(239, 83, 80, 0.1);
  color: #EF5350;
}

.tag-registration {
  background: rgba(255, 183, 77, 0.1);
  color: #E65100;
}

.tag-free {
  background: rgba(93, 227, 114, 0.1);
  color: #2E7D32;
}

/* Steps */
.permit-steps {
  counter-reset: step;
}

.permit-step {
  display: flex;
  gap: 16px;
  margin-bottom: 24px;
  position: relative;
}

.permit-step::before {
  counter-increment: step;
  content: counter(step);
  width: 36px;
  height: 36px;
  background: var(--color-bright-green);
  color: var(--color-dark-green);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.permit-step h4 {
  font-weight: 700;
  color: var(--color-dark-green);
  margin-bottom: 4px;
}

.permit-step p {
  font-size: 0.9rem;
  color: var(--color-medium-gray);
  margin-bottom: 0;
}

/* FAQ */
.faq-list {
  display: grid;
  gap: 12px;
}

.faq-item {
  background: var(--color-white);
  border: 1px solid var(--color-light-gray);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  padding: 18px 24px;
  background: none;
  text-align: left;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-dark-green);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: background var(--transition-fast);
}

.faq-question:hover {
  background: var(--color-off-white);
}

.faq-question .faq-toggle {
  font-size: 1.2rem;
  color: var(--color-bright-green);
  transition: transform var(--transition-fast);
}

.faq-item.open .faq-toggle {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 24px;
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-normal), padding var(--transition-normal);
}

.faq-item.open .faq-answer {
  padding: 0 24px 18px;
  max-height: 500px;
}

.faq-answer p {
  font-size: 0.9rem;
  color: var(--color-dark-gray);
  line-height: 1.7;
}

/* --- Trails Listing Page --- */
.trails-page-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 40px 20px 80px;
}

.trails-filter {
  display: flex;
  gap: 12px;
  margin-bottom: 32px;
  flex-wrap: wrap;
  align-items: center;
}

.filter-btn {
  padding: 8px 18px;
  border-radius: var(--radius-xl);
  font-size: 0.9rem;
  font-weight: 600;
  background: var(--color-off-white);
  color: var(--color-dark-green);
  transition: all var(--transition-fast);
  border: 2px solid transparent;
}

.filter-btn:hover {
  background: var(--color-light-gray);
}

.filter-btn.active {
  background: var(--color-dark-green);
  color: var(--color-white);
}

.filter-select {
  padding: 8px 16px;
  border: 2px solid var(--color-light-gray);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-family: var(--font-primary);
  color: var(--color-dark-green);
  background: var(--color-white);
  cursor: pointer;
  outline: none;
}

.filter-select:focus {
  border-color: var(--color-bright-green);
}

/* --- Footer --- */
.site-footer {
  background: var(--color-dark-green);
  color: var(--color-white);
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-top: 12px;
  max-width: 300px;
}

.footer-col h4 {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-bright-green);
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  padding: 4px 0;
  transition: color var(--transition-fast);
}

.footer-col a:hover {
  color: var(--color-bright-green);
}

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.footer-social a {
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: background var(--transition-fast);
}

.footer-social a:hover {
  background: var(--color-bright-green);
  color: var(--color-dark-green);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.4);
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.animate-delay-1 { animation-delay: 0.1s; }
.animate-delay-2 { animation-delay: 0.2s; }
.animate-delay-3 { animation-delay: 0.3s; }

/* --- Responsive Design --- */
@media (max-width: 1024px) {
  .trail-detail-content {
    grid-template-columns: 1fr;
  }

  .trail-sidebar {
    position: static;
  }

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

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-stats {
    gap: 24px;
  }

  .hero-stat-value {
    font-size: 1.2rem;
  }

  .section {
    padding: 60px 0;
  }

  .section-title {
    font-size: 1.6rem;
  }

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

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

  .nav-links {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 20px;
    gap: 16px;
    border-bottom: 1px solid var(--color-light-gray);
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: flex;
  }

  .trail-hero-content h1 {
    font-size: 2rem;
  }

  .trail-stats-bar {
    gap: 16px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .page-hero h1 {
    font-size: 1.8rem;
  }

  .permit-steps {
    padding-left: 0;
  }
}

@media (max-width: 480px) {
  .hero {
    min-height: 75vh;
  }

  .hero h1 {
    font-size: 1.8rem;
  }

  .hero-search {
    flex-direction: column;
    border-radius: var(--radius-md);
  }

  .hero-search button {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
  }

  .trail-card-image {
    height: 180px;
  }

  .highlight-list {
    grid-template-columns: 1fr;
  }

  .detailed-gear-list {
    grid-template-columns: 1fr;
  }

  .itinerary-day {
    flex-direction: column;
    gap: 8px;
  }

  .itinerary-day-label {
    width: auto;
    display: inline-block;
    padding: 4px 12px;
  }

  .season-detail {
    flex-direction: column;
    gap: 10px;
  }
}

/* --- Itinerary Cards --- */
.itinerary-list {
  display: grid;
  gap: 16px;
}

.itinerary-card {
  background: var(--color-off-white);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-light-gray);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.itinerary-card:hover {
  border-color: var(--color-bright-green);
}

.itinerary-card.itinerary-expanded {
  border-color: var(--color-bright-green);
  box-shadow: 0 2px 12px rgba(93, 227, 114, 0.15);
}

.itinerary-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.itinerary-card-header:hover {
  background: var(--color-light-gray);
}

.itinerary-card-info {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.itinerary-card-name {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-dark-green);
  margin: 0;
}

.itinerary-card-days {
  font-size: 0.85rem;
  color: var(--color-medium-gray);
  font-weight: 500;
}

.itinerary-toggle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--color-bright-green);
  color: var(--color-dark-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 700;
  flex-shrink: 0;
  line-height: 1;
  transition: transform var(--transition-fast);
}

.itinerary-expanded .itinerary-toggle {
  background: var(--color-dark-green);
  color: var(--color-bright-green);
}

.itinerary-card-desc {
  font-size: 0.9rem;
  color: var(--color-dark-gray);
  line-height: 1.6;
  padding: 0 20px 16px;
  margin: 0;
}

.itinerary-daily-plan {
  padding: 0 20px 20px;
  border-top: 1px solid var(--color-light-gray);
  margin-top: 0;
  padding-top: 16px;
}

.itinerary-day {
  display: flex;
  gap: 14px;
  margin-bottom: 14px;
  position: relative;
}

.itinerary-day:last-child {
  margin-bottom: 0;
}

.itinerary-day-label {
  flex-shrink: 0;
  width: 56px;
  padding: 6px 0;
  background: var(--color-bright-green);
  color: var(--color-dark-green);
  font-size: 0.75rem;
  font-weight: 700;
  text-align: center;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  height: fit-content;
}

.itinerary-day-text {
  font-size: 0.9rem;
  color: var(--color-dark-gray);
  line-height: 1.7;
  flex: 1;
}

/* --- Detailed Gear List --- */
.detailed-gear-list {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.detailed-gear-list li {
  padding: 10px 14px;
  background: var(--color-off-white);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  line-height: 1.5;
}

/* --- Season Detail --- */
.season-detail {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  background: var(--color-off-white);
  border-radius: var(--radius-md);
  padding: 20px 24px;
  border-left: 4px solid var(--color-bright-green);
}

.season-detail-icon {
  font-size: 1.6rem;
  flex-shrink: 0;
  line-height: 1;
  padding-top: 2px;
}

.season-detail p {
  font-size: 0.95rem;
  color: var(--color-dark-gray);
  line-height: 1.75;
  margin: 0;
}

/* --- Safety Notes --- */
.safety-notes {
  display: grid;
  gap: 10px;
}

.safety-note-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 14px 18px;
  background: rgba(255, 183, 77, 0.08);
  border: 1px solid rgba(255, 183, 77, 0.2);
  border-radius: var(--radius-sm);
  border-left: 3px solid #FFB74D;
}

.safety-note-icon {
  font-size: 1.1rem;
  flex-shrink: 0;
  line-height: 1.4;
}

.safety-note-text {
  font-size: 0.9rem;
  color: var(--color-dark-gray);
  line-height: 1.6;
}