:root {
  --red: #E8402A;
  --red-dark: #c53420;
  --navy: #22405e;
  --cream: #fbf6ec;
  --cream-2: #fffdf9;
  --ink: #1a1a1a;
  --body-text: #444;
  --muted: #7a756c;
  --border: #e7ded0;
  --radius: 18px;
  --font-head: 'Fredoka', sans-serif;
  --font-body: 'Nunito', sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--cream);
  color: var(--body-text);
  line-height: 1.55;
}

h1, h2, h3 { font-family: var(--font-head); color: var(--navy); margin: 0; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: #fff;
  color: var(--navy);
  padding: 10px 16px;
  z-index: 100;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

.series-back-link {
  display: block;
  text-align: center;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 19px;
  letter-spacing: 0.2px;
  color: #fff;
  text-decoration: none;
  background: var(--navy);
  border-bottom: 4px solid var(--red);
  padding: 20px 24px;
  transition: background 0.15s ease;
}
.series-back-link:hover { background: var(--red); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background: var(--navy);
  color: #fff;
  overflow: hidden;
  padding: 64px 24px 56px;
  text-align: center;
}
.hero-skyline {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 90px;
  color: rgba(255,255,255,0.12);
  line-height: 0;
}
.hero-skyline svg { width: 100%; height: 100%; display: block; }
.hero-inner { position: relative; max-width: 640px; margin: 0 auto; }
.eyebrow {
  font-family: var(--font-head);
  font-weight: 600;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  font-size: 13px;
  color: var(--red);
  margin: 0 0 14px;
}
.hero h1 {
  color: #fff;
  font-size: clamp(34px, 6vw, 54px);
  line-height: 1.05;
  font-weight: 700;
}
.hero-sub {
  font-size: 17px;
  max-width: 480px;
  margin: 18px auto 28px;
  color: rgba(255,255,255,0.88);
}
.btn {
  display: inline-block;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 15px;
  padding: 12px 24px;
  border-radius: 999px;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--red); color: #fff; }
.btn-primary:hover { background: var(--red-dark); }

/* ---------- Table of contents ---------- */
.toc {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  background: var(--cream-2);
  border-bottom: 2px solid var(--border);
  padding: 16px 20px;
}
.toc a {
  flex-shrink: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 15.5px;
  color: #fff;
  background: var(--red);
  text-decoration: none;
  padding: 10px 20px;
  border: 2px solid var(--red);
  border-radius: 999px;
  white-space: nowrap;
  box-shadow: 0 3px 8px rgba(232,64,42,0.3);
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease, box-shadow 0.15s ease;
}
.toc a:hover, .toc a:focus-visible {
  background: var(--red-dark);
  border-color: var(--red-dark);
  transform: translateY(-1px);
  box-shadow: 0 5px 12px rgba(232,64,42,0.4);
}

/* ---------- Sections ---------- */
.section { padding: 64px 24px; max-width: 1080px; margin: 0 auto; }
.section-alt { background: var(--cream-2); max-width: none; }
.section-alt > * { max-width: 1080px; margin-left: auto; margin-right: auto; }
.section-head { text-align: center; max-width: 620px; margin: 0 auto 36px; }
.section-head h2 { font-size: clamp(26px, 4vw, 34px); }
.section-sub { color: var(--muted); font-size: 16px; margin-top: 10px; }

/* ---------- Landmark grid ---------- */
.landmark-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
}

.landmark-card {
  background: #fff;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 18px 18px;
  text-align: left;
  perspective: 1200px;
  min-height: 220px;
  cursor: pointer;
}
.card-face-front { display: flex; flex-direction: column; height: 100%; }
.card-icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--cream);
  display: flex; align-items: center; justify-content: center;
  font-size: 28px;
  margin-bottom: 12px;
  flex-shrink: 0;
}
.card-icon svg { width: 34px; height: 34px; }
.landmark-card h3 { font-size: 18px; margin-bottom: 6px; }
.card-fact { font-size: 14.5px; color: var(--body-text); flex: 1; }
.card-toggle-hint { font-size: 12.5px; color: var(--muted); margin-top: auto; padding-top: 10px; font-style: italic; }

.card-back { display: none; }
.landmark-card.flipped .card-face-front { display: none; }
.landmark-card.flipped .card-back { display: flex; flex-direction: column; height: 100%; }

.card-bonus-label {
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 11.5px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 6px;
}
.card-bonus { font-size: 14px; flex: 1; }

.card-word-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px dashed var(--border);
}
.card-word { line-height: 1.25; }
.card-kana { font-size: 17px; font-weight: 700; color: var(--navy); }
.card-romaji { font-size: 12.5px; color: var(--muted); }
.card-meaning { font-size: 12.5px; color: var(--muted); font-style: italic; }

.maps-link {
  display: inline-block;
  margin-top: 10px;
  font-size: 12.5px;
  font-weight: 700;
  color: var(--red);
  text-decoration: none;
}
.maps-link:hover { text-decoration: underline; }

.hear-btn {
  flex-shrink: 0;
  width: 38px; height: 38px;
  border-radius: 50%;
  border: none;
  background: var(--red);
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.hear-btn:hover { background: var(--red-dark); }
.hear-btn:active { transform: scale(0.94); }
.hear-btn[data-playing="1"] { animation: pulse 0.8s ease-in-out infinite; }
@keyframes pulse { 0%,100% { box-shadow: 0 0 0 0 rgba(232,64,42,0.5);} 50% { box-shadow: 0 0 0 6px rgba(232,64,42,0);} }

/* ---------- Map ---------- */
.map-wrap { display: flex; justify-content: center; }
.map-canvas {
  position: relative;
  width: 100%;
  max-width: 640px;
  aspect-ratio: 600 / 460;
}
.map-bg { position: absolute; inset: 0; width: 100%; height: 100%; }
.map-legend {
  position: absolute;
  left: 14px; bottom: 14px;
  background: rgba(255,255,255,0.9);
  border-radius: 10px;
  padding: 8px 12px;
  font-size: 11.5px;
  color: var(--body-text);
  display: flex;
  gap: 12px;
}
.map-legend span { display: flex; align-items: center; gap: 5px; }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.dot-loop { background: transparent; border: 2px dashed #5FA052; }
.dot-water { background: #bcd6ee; }
.dot-park { background: #cfe6cf; }

.map-pin-group {
  position: absolute;
  transform: translate(-50%, -100%);
  display: flex;
  align-items: center;
  gap: 4px;
}
.map-pin {
  background: #fff;
  border: 2px solid var(--navy);
  border-radius: 999px;
  padding: 4px 10px 4px 6px;
  font-size: 12px;
  font-weight: 700;
  color: var(--navy);
  display: flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  white-space: nowrap;
  box-shadow: 0 2px 6px rgba(0,0,0,0.12);
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
}
.map-pin:hover { transform: scale(1.06); background: var(--red); color: #fff; border-color: var(--red); }
.map-pin .pin-emoji { font-size: 15px; }

.map-pin-link {
  flex-shrink: 0;
  width: 24px; height: 24px;
  border-radius: 50%;
  background: #fff;
  border: 2px solid var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  text-decoration: none;
  box-shadow: 0 2px 6px rgba(0,0,0,0.12);
  transition: transform 0.15s ease, background 0.15s ease;
}
.map-pin-link:hover { transform: scale(1.1); background: var(--red); border-color: var(--red); }

@media (max-width: 700px) {
  .map-pin { font-size: 10.5px; padding: 3px 8px 3px 5px; }
  .map-pin .pin-emoji { font-size: 13px; }
  .map-pin-link { width: 20px; height: 20px; font-size: 10px; }
}
@media (max-width: 480px) {
  .map-pin { font-size: 9px; padding: 2px 6px 2px 4px; gap: 3px; }
  .map-pin .pin-emoji { font-size: 11px; }
  .map-pin-link { width: 17px; height: 17px; font-size: 9px; }
}

/* ---------- Phrases ---------- */
.phrase-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 12px;
}
.phrase-card {
  background: #fff;
  border: 2px solid var(--border);
  border-radius: 14px;
  padding: 14px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.phrase-en { font-weight: 700; color: var(--navy); font-size: 15px; }
.phrase-kana { font-size: 15px; margin-top: 2px; }
.phrase-romaji { font-size: 12px; color: var(--muted); }

/* ---------- Eki-stamps ---------- */
.stamp-intro {
  max-width: 720px;
  margin: 0 auto 28px;
  font-size: 15.5px;
  text-align: center;
}
.stamp-info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
  margin-bottom: 20px;
}
.stamp-info-card {
  background: #fff;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
}
.stamp-info-card h3 { font-size: 17px; margin-bottom: 8px; }
.stamp-info-card p { font-size: 14.5px; margin: 0; }
.stamp-rally-callout {
  background: linear-gradient(135deg, #fff6e6, #ffece6);
  border: 3px solid var(--red);
  border-radius: var(--radius);
  padding: 26px;
  margin-bottom: 24px;
  box-shadow: 0 10px 24px rgba(232,64,42,0.16);
}
.stamp-rally-callout h3 { font-size: 21px; margin-bottom: 10px; color: var(--red); }
.stamp-rally-callout > p { font-size: 14.5px; margin: 0 0 18px; }
.stamp-rally-callout > p:last-child { margin: 18px 0 0; }
.stamp-rally-callout p a { color: var(--red); font-weight: 700; }

.stamp-rally-feature {
  background: #fff;
  border: 2px solid #ffcf4d;
  border-radius: 14px;
  padding: 18px 20px;
  box-shadow: 0 4px 14px rgba(0,0,0,0.08);
}
.stamp-rally-badge {
  display: inline-block;
  background: #ffcf4d;
  color: #7a4b00;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 11px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 10px;
  transform: rotate(-2deg);
}
.stamp-rally-feature h4 {
  font-family: var(--font-head);
  color: var(--navy);
  font-size: 20px;
  margin: 0 0 8px;
}
.stamp-rally-feature p { font-size: 14.5px; margin: 0; }
.stamp-cta { display: block; width: fit-content; margin: 0 auto; }

.rail-badge {
  display: inline-block;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 12px;
  padding: 2px 9px;
  border-radius: 6px;
  color: #fff;
  letter-spacing: 0.3px;
  white-space: nowrap;
}
.rail-badge-jr { background: #009444; }
.rail-badge-metro { background: #0072bc; }
.rail-badge-toei { background: #7b5ea7; }

/* ---------- Printables ---------- */
.printables-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
}
.printable-card {
  background: #fff;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
}
.printable-card h3 { font-size: 20px; margin-bottom: 8px; }
.printable-card p { font-size: 14.5px; color: var(--body-text); margin-bottom: 16px; }

/* ---------- Footer ---------- */
.site-footer {
  text-align: center;
  padding: 40px 24px 50px;
  color: var(--muted);
  font-size: 14px;
}
.footer-brand {
  font-family: var(--font-head);
  font-weight: 600;
  color: var(--red);
  letter-spacing: 1.5px;
  font-size: 13px;
  margin-bottom: 10px;
}
.footer-fine { margin-top: 14px; font-style: italic; }

/* ---------- Print-only sheets ---------- */
.print-only { display: none; }

@media print {
  body > *:not(.print-only) { display: none !important; }
  .print-only { display: block !important; }
  #print-stampsheet:not(.active-print) { display: none !important; }
}

.stamp-sheet { width: 8in; margin: 0.5in auto; text-align: center; }
.stamp-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.5in; margin-top: 0.4in; }
.stamp-cell { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.stamp-circle { width: 2in; height: 2in; border: 2px dashed #999; border-radius: 50%; }