:root {
  /* Minimalist 2.0 Palette */
  --primary-color: #E60012;
  /* China Red */
  --secondary-color: #FFC0CB;
  /* Soft Pink - Accent */
  --bg-color: #F8F8FA;
  /* Off-white / Cool Grey */
  --card-bg: #FFFFFF;
  --text-main: #1D1D1F;
  /* Apple Black */
  --text-secondary: #86868B;

  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-hover: 0 12px 24px rgba(0, 0, 0, 0.1);
  --radius-lg: 24px;
  --radius-md: 16px;

  --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  /* iOS ease */

  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'SF Pro Display', 'Inter', sans-serif;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

img {
  width: 100%;
  display: block;
}

/* Utilities */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section {
  padding: 80px 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  background-color: var(--text-main);
  color: white;
  border-radius: 40px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  border: none;
  cursor: pointer;
}

.btn:hover {
  background-color: var(--primary-color);
  transform: scale(1.02);
}

.btn-small {
  display: inline-block;
  padding: 8px 16px;
  background: var(--bg-color);
  color: var(--text-main);
  border-radius: 20px;
  font-weight: 500;
  font-size: 0.85rem;
  transition: var(--transition);
  text-decoration: none;
}

.btn-small:hover {
  background: var(--text-main);
  color: white;
}

/* Header (Minimalist) */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

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

.logo {
  font-size: 1.2rem;
  font-weight: 800;
  letter-spacing: -0.05em;
  color: var(--primary-color);
}

.menu-toggle {
  display: none;
  /* Hidden on desktop */
  font-size: 1.5rem;
  cursor: pointer;
}

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

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: var(--transition);
}

.nav-links a:hover {
  color: var(--text-main);
}

/* Hero (Subtle) */
.hero {
  min-height: 70vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  margin-top: 80px;
  /* Offset fixed header */
}

/* Specific hero text styles */
.hero-content {
  max-width: 800px;
  padding: 40px;
}

.hero-content h1 {
  font-size: 4.5rem;
  line-height: 1.1;
  margin-bottom: 24px;
  background: linear-gradient(135deg, var(--text-main) 0%, #4a4a4a 100%);
  background-clip: text;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-content p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 40px;
  max-width: 500px;
}

/* BENTO GRID SYSTEM */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 220px;
  /* Reduced from 280px for more compact cards */
  gap: 20px;
  margin-top: 40px;
}

.bento-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.bento-card:hover {
  transform: translateY(-4px) scale(1.01);
  box-shadow: var(--shadow-hover);
}

/* Grid Spans */
.span-2-col {
  grid-column: span 2;
}

.span-2-row {
  grid-row: span 2;
}

.span-4-col {
  grid-column: span 4;
}

/* Card Internals */
.card-image {
  height: 120px;
  /* Fixed height for consistent image sizing */
  overflow: hidden;
  position: relative;
  flex-shrink: 0;
}

/* Featured card (Beijing 2x2) - image fills entire card */
.span-2-row .card-image {
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
}

/* Wide card (Shanghai 2x1) - taller image */
.span-2-col:not(.span-2-row) .card-image {
  height: 160px;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

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

.card-content {
  padding: 16px;
  background: white;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

/* Floating content for large image cards */
.card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 24px;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  color: white;
  z-index: 2;
}

.card-overlay h3 {
  color: white;
  margin-bottom: 8px;
  font-size: 1.3rem;
}

.card-overlay p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.85rem;
}

.card-content h3 {
  font-size: 1rem;
  margin-bottom: 6px;
}

.card-content p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.4;
  display: -webkit-box;
  line-clamp: 2;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Info Grid (Resources) */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.info-card {
  background: white;
  padding: 32px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(0, 0, 0, 0.03);
}

/* Footer (Minimal) */
footer {
  margin-top: 100px;
  padding: 60px 0;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeInUp 0.8s ease forwards;
}

/* Mobile Responsiveness */
@media (max-width: 1024px) {
  .bento-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 250px;
  }
}

@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 3rem;
  }

  .bento-grid {
    display: flex;
    /* Stack on mobile */
    flex-direction: column;
    gap: 20px;
  }

  .bento-card {
    height: 300px;
  }

  .span-2-col,
  .span-2-row {
    grid-column: auto;
    grid-row: auto;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    padding: 20px;
    gap: 16px;
    box-shadow: var(--shadow-hover);
  }

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

  .menu-toggle {
    display: block;
  }

  .planner-stats {
    flex-direction: column;
    gap: 10px;
  }

  .filter-bar {
    flex-wrap: wrap;
  }

  .timeline-item {
    padding-left: 28px;
  }

  .guide-toc {
    columns: 1;
  }
}

/* ===== Missing Base Classes ===== */
.glass {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.city-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-top: 20px;
}

.city-card {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.city-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.city-info {
  padding: 16px;
}

.city-info h3 {
  margin-bottom: 6px;
}

.info-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

/* ===== Planner: Stats Bar ===== */
.planner-stats {
  display: flex;
  gap: 24px;
  padding: 16px 24px;
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
  align-items: center;
  flex-wrap: wrap;
}

.planner-stats .stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.planner-stats .stat-value {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary-color);
}

.planner-stats .stat-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

/* ===== Planner: Budget Selector ===== */
.budget-selector {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}

.budget-selector .btn-small {
  border: 2px solid transparent;
  cursor: pointer;
}

.budget-selector .btn-small.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

/* ===== Planner: Day Stepper ===== */
.day-stepper {
  display: flex;
  align-items: center;
  gap: 6px;
}

.day-stepper button {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid #ddd;
  background: white;
  cursor: pointer;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.day-stepper button:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
}

.day-stepper span {
  font-weight: 600;
  min-width: 50px;
  text-align: center;
  font-size: 0.85rem;
}

/* ===== Planner: Filter Bar ===== */
.filter-bar {
  display: flex;
  gap: 8px;
  margin: 16px 0;
  flex-wrap: wrap;
}

.filter-bar .btn-small {
  cursor: pointer;
  border: 2px solid transparent;
}

.filter-bar .btn-small.active {
  background: var(--text-main);
  color: white;
  border-color: var(--text-main);
}

/* ===== Planner: Timeline ===== */
.timeline {
  position: relative;
  padding-left: 20px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
  border-radius: 3px;
}

.timeline-item {
  position: relative;
  padding: 0 0 24px 24px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -14px;
  top: 18px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--primary-color);
  border: 3px solid white;
  box-shadow: 0 0 0 2px var(--primary-color);
  z-index: 1;
}

.timeline-connector {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0 4px 0;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.timeline-connector span {
  background: rgba(230, 0, 18, 0.08);
  padding: 2px 10px;
  border-radius: 10px;
  font-weight: 500;
  color: var(--primary-color);
}

/* ===== Planner: Templates ===== */
.template-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 12px;
}

.template-card {
  background: white;
  padding: 20px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
}

.template-card:hover {
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

.template-card h4 {
  margin-bottom: 6px;
}

.template-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
}

/* ===== Guide: Table of Contents ===== */
.guide-toc {
  background: white;
  padding: 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: 30px;
  columns: 2;
  column-gap: 24px;
}

.guide-toc h3 {
  column-span: all;
  margin-bottom: 12px;
}

.guide-toc a {
  display: block;
  padding: 6px 0;
  color: var(--primary-color);
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition);
  break-inside: avoid;
}

.guide-toc a:hover {
  color: var(--text-main);
  padding-left: 8px;
}

/* ===== Guide: Collapsible Sections ===== */
.guide-section {
  margin-top: 20px;
}

.guide-section summary {
  font-size: 1.3rem;
  font-weight: 700;
  cursor: pointer;
  padding: 16px 0;
  border-bottom: 2px solid var(--primary-color);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.guide-section summary::-webkit-details-marker {
  display: none;
}

.guide-section summary::after {
  content: '+';
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--primary-color);
  transition: transform 0.3s ease;
}

.guide-section[open] summary::after {
  content: '-';
}

.guide-section .section-content {
  padding: 20px 0;
}

/* ===== Guide: Reading Progress Bar ===== */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(to right, var(--primary-color), #ff6b6b);
  z-index: 1001;
  transition: width 0.1s linear;
}

/* ===== Guide: Step Cards ===== */
.step-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 20px;
  background: white;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  margin-bottom: 12px;
}

.step-card .step-number {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--primary-color);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  flex-shrink: 0;
}

.step-card .step-body h4 {
  margin-bottom: 4px;
}

.step-card .step-body p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ===== Guide: Packing Checklist ===== */
.packing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 12px;
}

.packing-category h4 {
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--primary-color);
}

.packing-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 0;
  cursor: pointer;
  user-select: none;
}

.packing-item input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary-color);
  cursor: pointer;
}

.packing-item.checked label {
  text-decoration: line-through;
  color: var(--text-secondary);
}

.packing-item label {
  cursor: pointer;
  font-size: 0.95rem;
}

/* ===== Guide: Phrase Cards ===== */
.phrase-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.phrase-card {
  background: white;
  padding: 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.phrase-card .chinese {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 6px 0;
}

.phrase-card .pinyin {
  font-size: 0.85rem;
  color: var(--primary-color);
  font-style: italic;
}

.phrase-card .english {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

/* ===== Guide: Food Cards ===== */
.food-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 12px;
}

.food-card {
  background: white;
  padding: 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-align: center;
}

.food-card .food-emoji {
  font-size: 2rem;
}

.food-card h4 {
  margin: 6px 0 4px;
}

.food-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
}

/* ===== Food Page: Cuisine Cards & Dish Tags ===== */
.cuisine-card {
  transition: var(--transition);
}

.cuisine-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.spice-level {
  font-size: 0.85rem;
  white-space: nowrap;
}

.dish-tag {
  display: inline-block;
  background: rgba(0, 0, 0, 0.05);
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--text-main);
  cursor: default;
}

.dish-tag:hover {
  background: var(--primary-color);
  color: white;
}

/* ===== Active btn-small variant ===== */
.btn-small.active {
  background: var(--text-main);
  color: white;
}

/* ===== Print Styles ===== */
@media print {
  header, footer, .no-print {
    display: none !important;
  }

  .timeline::before {
    background: #333;
  }

  .timeline-dot {
    background: #333;
    box-shadow: none;
  }
}