/* Modern Premium CSS for Houlong Riparian Corridor Website */

/* Register CSS variables for smooth transitions */
@property --primary {
  syntax: '<color>';
  inherits: true;
  initial-value: #10b981;
}
@property --primary-glow {
  syntax: '<color>';
  inherits: true;
  initial-value: rgba(16, 185, 129, 0.2);
}
@property --text-main {
  syntax: '<color>';
  inherits: true;
  initial-value: #064e3b;
}
@property --accent {
  syntax: '<color>';
  inherits: true;
  initial-value: #f43f5e;
}

:root {
  /* Color Palette - Spring (嫩綠與粉櫻) */
  --spring-primary: #10b981;
  --spring-primary-glow: rgba(16, 185, 129, 0.2);
  --spring-text: #064e3b;
  --spring-accent: #f43f5e;
  --spring-bg-1: #eefdf7;
  --spring-bg-2: #fff5f5;

  /* Color Palette - Summer (烈日晚霞與湛藍) */
  --summer-primary: #f97316;
  --summer-primary-glow: rgba(249, 115, 22, 0.2);
  --summer-text: #7c2d12;
  --summer-accent: #06b6d4;
  --summer-bg-1: #fff7ed;
  --summer-bg-2: #f0f9ff;

  /* Color Palette - Autumn (金黃芒草與深褐) */
  --autumn-primary: #d97706;
  --autumn-primary-glow: rgba(217, 119, 6, 0.2);
  --autumn-text: #78350f;
  --autumn-accent: #ca8a04;
  --autumn-bg-1: #fefcee;
  --autumn-bg-2: #fffbeb;

  /* Color Palette - Winter (銀雪深藍與灰石) */
  --winter-primary: #2563eb;
  --winter-primary-glow: rgba(37, 99, 235, 0.2);
  --winter-text: #1e3a8a;
  --winter-accent: #64748b;
  --winter-bg-1: #f0f6ff;
  --winter-bg-2: #f8fafc;

  /* Theme Defaults (Spring) */
  --primary: var(--spring-primary);
  --primary-glow: var(--spring-primary-glow);
  --text-main: var(--spring-text);
  --accent: var(--spring-accent);
  --bg-1: var(--spring-bg-1);
  --bg-2: var(--spring-bg-2);

  /* Shared Styling Tokens */
  --dark-color: #0f172a;
  --light-color: #f8fafc;
  --gray-color: #64748b;
  
  --transition-speed: 0.5s;
  
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 12px 40px 0 rgba(15, 23, 42, 0.06);
  
  --font-sans: 'Outfit', 'Noto Sans TC', sans-serif;
}

/* Season Body Classes */
body.season-spring {
  --primary: var(--spring-primary);
  --primary-glow: var(--spring-spring-glow);
  --text-main: var(--spring-text);
  --accent: var(--spring-accent);
  --bg-1: var(--spring-bg-1);
  --bg-2: var(--spring-bg-2);
}

body.season-summer {
  --primary: var(--summer-primary);
  --primary-glow: var(--summer-primary-glow);
  --text-main: var(--summer-text);
  --accent: var(--summer-accent);
  --bg-1: var(--summer-bg-1);
  --bg-2: var(--summer-bg-2);
}

body.season-autumn {
  --primary: var(--autumn-primary);
  --primary-glow: var(--autumn-primary-glow);
  --text-main: var(--autumn-text);
  --accent: var(--autumn-accent);
  --bg-1: var(--autumn-bg-1);
  --bg-2: var(--autumn-bg-2);
}

body.season-winter {
  --primary: var(--winter-primary);
  --primary-glow: var(--winter-primary-glow);
  --text-main: var(--winter-text);
  --accent: var(--winter-accent);
  --bg-1: var(--winter-bg-1);
  --bg-2: var(--winter-bg-2);
}

/* Base Styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  color: var(--dark-color);
  background-color: var(--bg-1);
  background-image: radial-gradient(at 0% 0%, var(--bg-1) 0px, transparent 50%),
                    radial-gradient(at 100% 100%, var(--bg-2) 0px, transparent 50%);
  background-attachment: fixed;
  overflow-x: hidden;
  line-height: 1.6;
  transition: --primary var(--transition-speed),
              --primary-glow var(--transition-speed),
              --text-main var(--transition-speed),
              --accent var(--transition-speed),
              background-color var(--transition-speed);
}

/* Ambient glow under cursor */
.ambient-glow {
  position: fixed;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  z-index: 1;
  transform: translate(-50%, -50%);
  transition: background var(--transition-speed);
}

/* Header & Navigation */
.main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 8%;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  z-index: 1000;
  transition: padding 0.3s, background 0.3s;
}

.main-header.scrolled {
  padding: 12px 8%;
  background: rgba(255, 255, 255, 0.85);
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--dark-color);
}

.logo .icon {
  color: var(--primary);
  font-size: 1.8rem;
  animation: float-logo 3s ease-in-out infinite;
  transition: color var(--transition-speed);
}

.logo span span {
  color: var(--primary);
  font-weight: 900;
  transition: color var(--transition-speed);
}

.nav-menu {
  display: flex;
  gap: 30px;
}

.nav-link {
  text-decoration: none;
  color: var(--gray-color);
  font-weight: 500;
  font-size: 1rem;
  position: relative;
  padding: 5px 0;
  transition: color 0.3s;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width 0.3s, background-color var(--transition-speed);
}

.nav-link:hover, .nav-link.active {
  color: var(--dark-color);
}

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

.cta-button {
  text-decoration: none;
  background: var(--primary);
  color: #fff;
  padding: 10px 24px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 0.95rem;
  box-shadow: 0 4px 15px var(--primary-glow);
  transition: transform 0.3s, background var(--transition-speed), box-shadow 0.3s;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--primary-glow);
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 0 8%;
  background-size: cover;
  background-position: center;
  background-attachment: fixed;
  overflow: hidden;
  z-index: 2;
  transition: background-image var(--transition-speed);
}

.season-spring .hero-section { background-image: url('assets/houlong_spring.jpg'); }
.season-summer .hero-section { background-image: url('assets/houlong_summer.jpg'); }
.season-autumn .hero-section { background-image: url('assets/houlong_autumn.jpg'); }
.season-winter .hero-section { background-image: url('assets/houlong_winter.jpg'); }

.hero-bg-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(15, 23, 42, 0.75) 0%, rgba(15, 23, 42, 0.4) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 650px;
  color: #fff;
}

.hero-content .badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 8px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 24px;
  letter-spacing: 1px;
}

.hero-content h1 {
  font-size: 4rem;
  line-height: 1.2;
  font-weight: 900;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero-content h1 span {
  color: var(--primary);
  text-shadow: 0 0 30px var(--primary-glow);
  transition: color var(--transition-speed);
}

.hero-desc {
  font-size: 1.15rem;
  line-height: 1.8;
  opacity: 0.9;
  margin-bottom: 35px;
  font-weight: 300;
}

.hero-actions {
  display: flex;
  gap: 20px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 30px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: all 0.3s;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px var(--primary-glow);
}

.btn-outline {
  border: 2px solid rgba(255, 255, 255, 0.4);
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: #fff;
  transform: translateY(-2px);
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  color: #fff;
  opacity: 0.7;
}

.mouse {
  width: 26px;
  height: 42px;
  border: 2px solid #fff;
  border-radius: 15px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}

.wheel {
  width: 4px;
  height: 8px;
  background: #fff;
  border-radius: 2px;
  animation: scroll-wheel 1.5s infinite;
}

.scroll-text {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* Section Common Layout */
section {
  padding: 100px 8%;
  position: relative;
  z-index: 10;
}

.section-header {
  max-width: 700px;
  margin: 0 auto 60px;
}

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

.section-subtitle {
  color: var(--primary);
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  display: block;
  margin-bottom: 12px;
  transition: color var(--transition-speed);
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 20px;
  color: var(--dark-color);
}

.section-desc {
  color: var(--gray-color);
  font-size: 1.05rem;
  line-height: 1.7;
}

/* Seasons Tab Controller */
.season-tabs {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 40px;
}

.season-tab {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: 14px 28px;
  border-radius: 30px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-color);
  box-shadow: var(--glass-shadow);
  transition: all 0.3s, color var(--transition-speed);
}

.season-tab:hover {
  transform: translateY(-2px);
  color: var(--dark-color);
  border-color: rgba(0, 0, 0, 0.1);
}

.season-tab.active {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
  box-shadow: 0 8px 25px var(--primary-glow);
}

.season-tab .tab-icon {
  font-size: 1.1rem;
}

/* Season Display Panels */
.season-display-container {
  position: relative;
  min-height: 550px;
}

.season-panel {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  pointer-events: none;
  transform: translateY(20px);
  transition: opacity 0.5s, transform 0.5s;
}

.season-panel.active {
  position: relative;
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
}

.panel-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 50px;
  align-items: center;
}

.panel-image-wrapper {
  position: relative;
  border-radius: 24px;
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0,0,0,0.12);
  aspect-ratio: 4/3;
  transform-style: preserve-3d;
}

.panel-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.panel-image-wrapper:hover .panel-image {
  transform: scale(1.05);
}

.image-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 20px;
  background: linear-gradient(to top, rgba(0,0,0,0.7), transparent);
}

.image-caption {
  color: #fff;
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-info {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 40px;
  border-radius: 24px;
  box-shadow: var(--glass-shadow);
}

.season-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.season-badge.spring { background: #d1fae5; color: #065f46; }
.season-badge.summer { background: #ffedd5; color: #9a3412; }
.season-badge.autumn { background: #fef9c3; color: #854d0e; }
.season-badge.winter { background: #dbeafe; color: #1e40af; }

.season-name {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 20px;
  transition: color var(--transition-speed);
}

.season-description {
  color: var(--gray-color);
  font-size: 1.05rem;
  line-height: 1.8;
  margin-bottom: 30px;
}

.tour-methods h4 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--dark-color);
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.tour-methods h4 i {
  color: var(--primary);
  transition: color var(--transition-speed);
}

.method-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.method-list li {
  display: flex;
  gap: 15px;
  align-items: flex-start;
}

.list-num {
  background: var(--primary);
  color: #fff;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: 700;
  flex-shrink: 0;
  box-shadow: 0 4px 10px var(--primary-glow);
  margin-top: 3px;
  transition: background var(--transition-speed), box-shadow 0.3s;
}

.method-list strong {
  display: block;
  font-size: 1rem;
  color: var(--dark-color);
  margin-bottom: 4px;
}

.method-list p {
  font-size: 0.95rem;
  color: var(--gray-color);
}

/* Ecology Section */
.eco-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 20px;
}

.eco-card {
  height: 420px;
  perspective: 1000px;
  cursor: pointer;
  border: none;
  background: transparent;
  outline: none;
}

.eco-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  transform-style: preserve-3d;
}

.eco-card:hover .eco-card-inner,
.eco-card:focus .eco-card-inner {
  transform: rotateY(180deg);
}

.eco-card-front, .eco-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
  border-radius: 24px;
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  overflow: hidden;
}

.eco-card-front {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
}

.eco-image-container {
  height: 280px;
  overflow: hidden;
}

.eco-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.eco-front-info {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.eco-front-info h3 {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--dark-color);
}

.eco-tag {
  align-self: flex-start;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--primary-glow);
  padding: 4px 12px;
  border-radius: 12px;
  transition: color var(--transition-speed), background var(--transition-speed);
}

.eco-card-back {
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transform: rotateY(180deg);
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.eco-card-back h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  margin-bottom: 5px;
  transition: color var(--transition-speed);
}

.eco-scientific {
  font-style: italic;
  font-size: 0.9rem;
  color: var(--gray-color);
  margin-bottom: 20px;
}

.eco-details {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.eco-details p {
  font-size: 0.95rem;
  color: var(--gray-color);
  line-height: 1.6;
}

.eco-details strong {
  color: var(--dark-color);
}

/* Route Section */
.route-container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 50px;
  align-items: center;
}

.interactive-map {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 24px;
  padding: 40px;
  box-shadow: var(--glass-shadow);
  position: relative;
  aspect-ratio: 2/1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.map-track {
  position: relative;
  width: 100%;
  height: 100%;
}

.map-svg {
  width: 100%;
  height: 100%;
}

.river-path {
  stroke: rgba(14, 165, 233, 0.15);
  stroke-dasharray: 8 4;
}

.river-path-inner {
  stroke: var(--primary);
  stroke-linecap: round;
  transition: stroke var(--transition-speed);
}

.map-marker {
  position: absolute;
  transform: translate(-50%, -50%);
  background: #fff;
  border: 2px solid var(--primary);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  transition: all 0.3s, border-color var(--transition-speed);
  z-index: 15;
}

.map-marker::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--primary-glow);
  z-index: -1;
  transform: scale(1);
  animation: marker-pulse 2s infinite;
  transition: background var(--transition-speed);
}

.marker-num {
  font-size: 0.9rem;
  font-weight: 800;
  color: var(--primary);
  transition: color var(--transition-speed);
}

.marker-label {
  position: absolute;
  top: 42px;
  background: var(--dark-color);
  color: #fff;
  padding: 4px 10px;
  border-radius: 8px;
  font-size: 0.75rem;
  white-space: nowrap;
  font-weight: 600;
  pointer-events: none;
  opacity: 0;
  transform: translateY(5px);
  transition: all 0.3s;
}

.map-marker:hover .marker-label,
.map-marker.active .marker-label {
  opacity: 1;
  transform: translateY(0);
}

.map-marker.active {
  background: var(--primary);
  border-color: var(--primary);
  transform: translate(-50%, -50%) scale(1.2);
  box-shadow: 0 6px 20px var(--primary-glow);
}

.map-marker.active .marker-num {
  color: #fff;
}

/* Route Details Panel */
.route-details-panel {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-radius: 24px;
  padding: 40px;
  box-shadow: var(--glass-shadow);
  min-height: 320px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.route-step-content {
  display: none;
  animation: fade-in-panel 0.5s ease forwards;
}

.route-step-content.active {
  display: block;
}

.step-num-badge {
  display: inline-block;
  background: var(--primary-glow);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: 12px;
  margin-bottom: 15px;
  transition: color var(--transition-speed), background var(--transition-speed);
}

.route-details-panel h3 {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--dark-color);
  margin-bottom: 15px;
}

.step-desc {
  color: var(--gray-color);
  font-size: 0.98rem;
  line-height: 1.7;
  margin-bottom: 25px;
}

.step-meta {
  display: flex;
  gap: 20px;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  padding-top: 20px;
}

.step-meta span {
  font-size: 0.85rem;
  color: var(--gray-color);
  display: flex;
  align-items: center;
  gap: 6px;
  font-weight: 500;
}

.step-meta i {
  color: var(--primary);
  transition: color var(--transition-speed);
}

/* Info & Tips Section */
.info-section {
  background: rgba(15, 23, 42, 0.02);
  border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.info-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: 24px;
  padding: 40px;
  box-shadow: var(--glass-shadow);
}

.info-card h3 {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--dark-color);
  margin-bottom: 30px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.info-card h3 i {
  color: var(--primary);
  transition: color var(--transition-speed);
}

.travel-tips ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.travel-tips li {
  display: flex;
  gap: 15px;
}

.tip-icon {
  background: var(--primary-glow);
  color: var(--primary);
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  transition: color var(--transition-speed), background var(--transition-speed);
}

.travel-tips strong {
  display: block;
  font-size: 1rem;
  color: var(--dark-color);
  margin-bottom: 4px;
}

.travel-tips p {
  font-size: 0.92rem;
  color: var(--gray-color);
}

.traffic-methods {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.traffic-item {
  display: flex;
  gap: 18px;
}

.traffic-icon {
  background: var(--primary-glow);
  color: var(--primary);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: color var(--transition-speed), background var(--transition-speed);
}

.traffic-item h4 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark-color);
  margin-bottom: 6px;
}

.traffic-item p {
  font-size: 0.92rem;
  color: var(--gray-color);
  line-height: 1.6;
}

/* Footer */
.main-footer {
  background: var(--dark-color);
  color: rgba(255,255,255,0.7);
  padding: 60px 8% 30px;
  position: relative;
  z-index: 10;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 40px;
  flex-wrap: wrap;
  gap: 30px;
}

.footer-info h3 {
  color: #fff;
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 10px;
}

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

.footer-links {
  display: flex;
  gap: 30px;
  flex-wrap: wrap;
}

.footer-links a {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  font-size: 0.92rem;
  transition: color 0.3s;
  font-weight: 500;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 30px;
  text-align: center;
  font-size: 0.82rem;
  color: rgba(255,255,255,0.4);
}

/* Animations */
@keyframes scroll-wheel {
  0% { transform: translateY(0); opacity: 1; }
  50% { transform: translateY(6px); opacity: 0.3; }
  100% { transform: translateY(0); opacity: 1; }
}

@keyframes marker-pulse {
  0% { transform: scale(0.95); opacity: 0.5; }
  50% { transform: scale(1.6); opacity: 0; }
  100% { transform: scale(0.95); opacity: 0.5; }
}

@keyframes float-logo {
  0% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-3px) rotate(5deg); }
  100% { transform: translateY(0) rotate(0deg); }
}

@keyframes fade-in-panel {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Entry Animations */
.fade-in, .fade-in-delay-1, .fade-in-delay-2, .fade-in-delay-3 {
  opacity: 0;
  transform: translateY(20px);
  animation: slide-up-fade 0.8s ease forwards;
}

.fade-in-delay-1 { animation-delay: 0.2s; }
.fade-in-delay-2 { animation-delay: 0.4s; }
.fade-in-delay-3 { animation-delay: 0.6s; }

@keyframes slide-up-fade {
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-content h1 {
    font-size: 3rem;
  }
  .panel-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .route-container {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .interactive-map {
    aspect-ratio: 1.8/1;
  }
}

@media (max-width: 768px) {
  .main-header {
    padding: 15px 5%;
  }
  .nav-menu {
    display: none; /* Can be expanded as mobile menu, keeping it simple for static */
  }
  .cta-button {
    padding: 8px 18px;
    font-size: 0.85rem;
  }
  .hero-section {
    padding: 0 5%;
  }
  .hero-content h1 {
    font-size: 2.4rem;
  }
  .hero-desc {
    font-size: 1rem;
  }
  section {
    padding: 60px 5%;
  }
  .season-tabs {
    flex-wrap: wrap;
    gap: 10px;
  }
  .season-tab {
    padding: 10px 18px;
    font-size: 0.9rem;
  }
  .info-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .interactive-map {
    padding: 10px;
    aspect-ratio: 1.5/1;
  }
  .map-marker {
    width: 30px;
    height: 30px;
  }
  .marker-label {
    display: none !important; /* Hide labels on mobile map to avoid clutter */
  }
}