/* ==========================================================================
   PassToChina — The Editorial Travel & Field Guide Design System
   Designed in accordance with the frontend-design standard:
   Organic Warm Silk Palette · Literary Serif Headlines · Tactile Field Pass Elements
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;0,6..72,600;1,6..72,400&family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');
@import url('../vendor/phosphor/regular/style.css');
@import url('../vendor/phosphor/bold/style.css');
@import url('../vendor/phosphor/fill/style.css');

/* Phosphor Icon Global Ergonomics */
.ph, .ph-bold, .ph-fill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  vertical-align: -0.125em;
  line-height: 1;
}

:root {
  /* Color Palette — Authentic Chinese Travel Vernacular */
  --bg-canvas: #FAF8F5;          /* Warm raw silk / parchment paper */
  --bg-card: #FFFFFF;            /* Pure card surface */
  --bg-surface-tint: #F3EFE8;    /* Muted rice paper secondary */
  --ink-primary: #1C201E;        /* Calligraphic deep sumi ink */
  --ink-muted: #58615C;          /* Warm graphite gray */
  --ink-faint: #8B948F;          /* Faint caption / metadata */
  --border-line: #E7E2D8;        /* Delicate bookbinding linen edge */
  --border-light: #F0EDE6;       /* Soft divider */
  
  /* Signature Travel Accents */
  --accent-vermilion: #B93822;   /* Cinnabar seal vermilion */
  --accent-vermilion-hover: #9E2F1C;
  --accent-vermilion-subtle: #FDF1EE;
  --accent-celadon: #2D6354;     /* Misty bamboo / celadon jade */
  --accent-celadon-subtle: #EDF4F1;
  --accent-amber: #B5742E;       /* Ancient lantern amber */
  --accent-amber-subtle: #FBF4EC;
  --accent-indigo: #2A4365;      /* Classical porcelain blue */

  /* Typography */
  --font-serif: "Newsreader", Georgia, "Source Han Serif SC", "Noto Serif CJK SC", serif;
  --font-sans: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "PingFang SC", "Hiragino Sans GB", "Segoe UI", Roboto, sans-serif;
  
  /* Shadows & Radius */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  --shadow-subtle: 0 2px 8px rgba(28, 32, 30, 0.04);
  --shadow-medium: 0 8px 24px rgba(28, 32, 30, 0.07);
  --shadow-float: 0 16px 40px rgba(28, 32, 30, 0.11);
}

/* Base Resets & Global Foundation */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-family: var(--font-sans);
  background-color: var(--bg-canvas);
  color: var(--ink-primary);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-canvas);
  color: var(--ink-primary);
  overflow-x: hidden;
}

/* Focus States — High Legibility & Accessibility */
:focus-visible {
  outline: 2px solid var(--accent-vermilion);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Typography Hierarchy */
h1, h2, h3, .font-serif {
  font-family: var(--font-serif);
  color: var(--ink-primary);
  font-weight: 500;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
}

h2 {
  font-size: clamp(1.75rem, 3.2vw, 2.5rem);
  letter-spacing: -0.02em;
}

h3 {
  font-size: clamp(1.25rem, 2vw, 1.65rem);
  letter-spacing: -0.015em;
}

p {
  margin-top: 0;
  margin-bottom: 1.25rem;
  color: var(--ink-muted);
  line-height: 1.7;
}

p.lead {
  font-size: 1.15rem;
  line-height: 1.75;
  color: var(--ink-muted);
}

/* Editorial Category & Vignette Eyebrows */
.editorial-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--accent-vermilion);
  margin-bottom: 0.5rem;
}

.editorial-kicker::before {
  content: "";
  display: inline-block;
  width: 14px;
  height: 1.5px;
  background-color: var(--accent-vermilion);
}

/* The Masthead Navigation */
.travel-masthead {
  background: rgba(250, 248, 245, 0.94);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-line);
  position: sticky;
  top: 0;
  z-index: 50;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.brand-seal {
  width: 36px;
  height: 36px;
  background: var(--accent-vermilion);
  color: #FFFFFF;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  box-shadow: 0 2px 6px rgba(185, 56, 34, 0.25);
  flex-shrink: 0;
}

/* Mode Switcher — Travel Companion Segmented Toggle */
.mode-segmented-pill {
  background: var(--bg-surface-tint);
  border: 1px solid var(--border-line);
  padding: 4px;
  border-radius: var(--radius-pill);
  display: inline-flex;
  align-items: center;
}

.mode-segmented-pill button {
  padding: 6px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 600;
  border: none;
  background: transparent;
  color: var(--ink-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.mode-segmented-pill button.active,
.mode-segmented-pill button[data-switch-mode="planning"].active {
  background: #FFFFFF;
  color: var(--ink-primary);
  box-shadow: 0 1px 4px rgba(28, 32, 30, 0.08);
}

.mode-segmented-pill button[data-switch-mode="in-china"].active {
  background: var(--accent-amber);
  color: #FFFFFF;
  box-shadow: 0 1px 4px rgba(184, 116, 46, 0.3);
}

/* Cards & Editorial Surfaces */
.travel-card {
  background: var(--bg-card);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-subtle);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  overflow: hidden;
}

.travel-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium);
  border-color: #D6CEBF;
}

/* Tactile Boarding Pass / Route Ticket */
.transit-boarding-pass {
  background: #FFFFFF;
  border: 1px solid var(--border-line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-medium);
  position: relative;
  overflow: hidden;
}

.transit-boarding-pass::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-vermilion) 0%, var(--accent-amber) 50%, var(--accent-celadon) 100%);
}

.pass-field-box {
  background: var(--bg-canvas);
  border: 1px solid var(--border-line);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  transition: border-color 0.18s ease, background 0.18s ease;
}

.pass-field-box:focus-within {
  border-color: var(--accent-vermilion);
  background: #FFFFFF;
}

.pass-field-box label {
  display: block;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--ink-muted);
  margin-bottom: 4px;
}

.pass-field-box input, 
.pass-field-box select {
  width: 100%;
  border: none;
  background: transparent;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--ink-primary);
  outline: none;
  padding: 0;
}

/* Buttons — Clear, Uncluttered & Confident */
.btn-primary {
  background: var(--accent-vermilion);
  color: #FFFFFF;
  border: 1px solid var(--accent-vermilion);
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.15s ease;
}

.btn-primary:hover {
  background: var(--accent-vermilion-hover);
}

.btn-secondary {
  background: #FFFFFF;
  color: var(--ink-primary);
  border: 1px solid var(--border-line);
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

.btn-secondary:hover {
  background: var(--bg-surface-tint);
  border-color: #D3CCC0;
}

/* Editorial Stamps & Verification Badges */
.travel-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}

.travel-badge-jade {
  background: var(--accent-celadon-subtle);
  color: var(--accent-celadon);
  border-color: rgba(45, 99, 84, 0.2);
}

.travel-badge-vermilion {
  background: var(--accent-vermilion-subtle);
  color: var(--accent-vermilion);
  border-color: rgba(185, 56, 34, 0.2);
}

.travel-badge-amber {
  background: var(--accent-amber-subtle);
  color: var(--accent-amber);
  border-color: rgba(181, 116, 46, 0.2);
}

.travel-badge-stone {
  background: var(--bg-surface-tint);
  color: var(--ink-muted);
  border-color: var(--border-line);
}

/* Bilingual Display Pill */
.bilingual-pair {
  display: flex;
  flex-direction: column;
}

.bilingual-title {
  font-family: var(--font-serif);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--ink-primary);
}

.bilingual-sub {
  font-size: 0.875rem;
  color: var(--ink-faint);
  font-family: var(--font-sans);
}

/* In-China Pocket Mode Emergency Bar */
.pocket-mode-strip {
  background: #FFFBEB;
  color: #78350F;
  border-bottom: 1px solid #FDE68A;
  padding: 8px 16px;
}

.pocket-mode-strip a {
  text-decoration: none;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  transition: background 0.15s ease;
}

/* High-Contrast Taxi Driver Screen (Fullscreen Mode) */
.taxi-screen-white, .taxi-screen-fullscreen {
  background-color: #FAF8F5 !important;
  color: #1C201E !important;
  border: none !important;
  border-radius: 0 !important;
}

/* Sticky Bottom Action Dock */
.sticky-action-dock {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 40;
  background: rgba(250, 248, 245, 0.95);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-top: 1px solid var(--border-line);
  padding: 12px 16px;
}

/* Toast Notifications */
#toast-container {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 60;
  display: flex;
  flex-direction: column;
  gap: 8px;
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  background: #FFFFFF;
  color: var(--ink-primary);
  border: 1px solid var(--border-line);
  padding: 10px 20px;
  border-radius: var(--radius-pill);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow-float);
  animation: toastIn 0.25s ease forwards;
}

@keyframes toastIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Backward Compatibility Helpers for Existing Markups */
.apple-card {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-line) !important;
  border-radius: var(--radius-md) !important;
  box-shadow: var(--shadow-subtle) !important;
}

.apple-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-medium) !important;
}

.apple-nav {
  background: rgba(250, 248, 245, 0.95) !important;
  border-bottom: 1px solid var(--border-line) !important;
}

.glass-card {
  background: var(--bg-card) !important;
  border: 1px solid var(--border-line) !important;
  border-radius: var(--radius-md) !important;
}

/* Responsive & Reduced Motion */
@media (max-width: 640px) {
  body {
    font-size: 15px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* Readability, touch and appearance refinements for the complete site. */
main [class~="text-xs"], main [class*="text-[11px]"], main [class*="text-[10px]"] { font-size: .8125rem !important; line-height: 1.5; }
main button, main input, main select, main textarea, header button, header a { min-height: 44px; }
main input, main select, main textarea { padding-top: .65rem; padding-bottom: .65rem; }
main button { padding-inline: 1rem; }
main img { background: #e8e5dc; }
.image-attribution { max-width: 76rem; margin: 2rem auto 0; padding: 1rem 1.25rem; color: #555d58; font-size: .75rem; line-height: 1.6; border-top: 1px solid rgba(41,47,44,.12); }
.image-attribution a { color: #714237; text-decoration: underline; text-underline-offset: 2px; }
@media (prefers-color-scheme: dark) {
  :root { --color-bg: #191d1b; --color-surface: #232926; --color-ink: #f1f0e9; --color-border: rgba(241,240,233,.15); }
  html, body, body.bg-slate-50 { background: var(--color-bg) !important; color: var(--color-ink); }
  body.bg-slate-50 > header, body > header:not(.apple-nav), .apple-nav { background: #202522 !important; border-color: rgba(241,240,233,.15) !important; }
  main h1, main h2, main h3, main [class*="text-slate-900"], main [class*="text-slate-800"], main [class*="text-slate-700"] { color: #f1f0e9 !important; }
  main p, main [class*="text-slate-600"], main [class*="text-slate-500"], body > header a, body > header a span { color: #c6cbc6 !important; }
  .glass-card, .apple-card, main section.bg-white, main > div.bg-white, main > div.rounded-3xl, main > div.rounded-2xl { background: #232926 !important; border-color: rgba(241,240,233,.15) !important; }
  main [class*="bg-slate-50"], main [class*="bg-slate-100"] { background-color: #303733 !important; }
  main [class*="bg-rose-50"] { background-color: #402b27 !important; }
  main input, main select, main textarea { color: #f1f0e9 !important; background-color: #303733 !important; border-color: #59615b !important; }
  .image-attribution { color: #c6cbc6; }
  .image-attribution a { color: #f1b29f; }
}
@media (prefers-contrast: more) {
  :root { --color-border: #555; }
  body, main { color: #161a18; }
  .glass-card, .apple-card { border: 2px solid #555; }
}
section:first-of-type .grid.grid-cols-2 .absolute.bottom-3 { color: #fff !important; text-shadow: 0 1px 5px rgba(0,0,0,.8); }
section:first-of-type .grid.grid-cols-2 .absolute.bottom-3 * { color: inherit !important; }