/* Scroll Path Journey — 沿革ページ
   色・書体・余白・動きはすべて ../_brand/tokens.css の --mk-* を使う */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; -webkit-font-smoothing: antialiased; }
img { display: block; max-width: 100%; height: auto; }
h1, h2, p, dl, dd, ol, figure, article { margin: 0; }
ol { padding: 0; list-style: none; }

:root { --col: calc((100% - (var(--mk-cols) - 1) * var(--mk-gutter)) / var(--mk-cols)); }

/* ---------- Hero ---------- */
.hero { padding-top: var(--mk-space-24); }

.hero-facts-note {
  margin-bottom: var(--mk-gap-item);
  color: var(--mk-ink-3);
}

.hero-facts { row-gap: var(--mk-gap-item); }
.hero-fact { grid-column: span 3; display: grid; gap: var(--mk-gap-inside); }
.hero-fact dd {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px;
  font-size: var(--mk-fs-13);
  line-height: 24px;
  color: var(--mk-ink-2);
}
.hero-fact__tag {
  font-family: var(--mk-font-en);
  font-size: var(--mk-fs-11);
  line-height: 16px;
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--mk-ink-3);
}

.hero-title {
  margin-top: var(--mk-gap-section);
  font-family: var(--mk-font-en);
  font-size: var(--mk-fs-display);
  line-height: .95;
  font-weight: 700;
  letter-spacing: -.055em;
}

.hero-lead { margin-top: var(--mk-gap-group); align-items: end; }
.hero-intro { grid-column: 1 / span 6; }
.hero-hint {
  grid-column: 10 / span 3;
  font-family: var(--mk-font-en);
  font-size: var(--mk-fs-13);
  line-height: 20px;
  font-weight: 500;
  color: var(--mk-ink-2);
}

/* ---------- Journey ---------- */
.journey { margin-top: var(--mk-gap-section); }
.journey-stage { position: relative; }

.route {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
  pointer-events: none;
}
.route path {
  fill: none;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.route-base { stroke: var(--mk-ink-3); stroke-dasharray: 1.5 10; }
.route-walked { stroke: var(--mk-ink); stroke-width: 2.5; opacity: 0; }
.has-route .route-walked { opacity: 1; }

/* マーカー */
.marker {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 4;
  width: 44px;
  height: 44px;
  display: none;
  pointer-events: none;
  color: var(--mk-paper);
}
.has-route .marker { display: block; }

.marker__scale { position: absolute; inset: 0; }

.marker__halo,
.marker__disk {
  position: absolute;
  inset: 0;
  border-radius: var(--mk-radius-full);
}

.marker__halo {
  border: 1px solid var(--mk-ink);
  opacity: .28;
  transform: scale(1.35);
}

.marker__disk {
  display: grid;
  place-items: center;
  background: var(--mk-ink);
  box-shadow: 0 8px 20px rgba(59, 59, 59, .18);
}

.marker__arrow {
  display: block;
  transform: translateX(1px);
}

/* ---------- Stops ---------- */
.stops {
  position: relative;
  z-index: 1;
  padding-block: var(--mk-gap-section);
}

.stop {
  position: relative;
  display: grid;
  grid-template-columns: repeat(var(--mk-cols), minmax(0, 1fr));
  column-gap: var(--mk-gutter);
  align-items: start;
}
.stop + .stop { margin-top: var(--mk-gap-section); }

/* ピン：丸。到達で小石が落ちたように沈み、波紋が3重に広がる */
.stop-pin {
  position: relative;
  z-index: 2;
  grid-row: 1;
  width: 14px;
  height: 14px;
  margin-top: 18px;
  border: 1.5px solid var(--mk-ink-2);
  border-radius: var(--mk-radius-full);
  background: var(--mk-paper);
  transition:
    background-color var(--mk-dur-base) var(--mk-ease),
    border-color var(--mk-dur-base) var(--mk-ease);
}

.stop--pin-l .stop-pin {
  grid-column: 1;
  justify-self: center;
}
.stop--pin-r .stop-pin {
  grid-column: 12;
  justify-self: center;
}

.stop-pin__ripple {
  position: absolute;
  inset: 0;
  border-radius: var(--mk-radius-full);
  border: 1px solid var(--mk-ink);
  opacity: 0;
  transform: scale(1);
  pointer-events: none;
}

.stop.is-open .stop-pin {
  background: var(--mk-ink);
  border-color: var(--mk-ink);
}

/* 小石：一瞬沈んで戻る */
.js-motion .stop.is-open .stop-pin {
  animation: pin-plop .5s var(--mk-ease) both;
}

/* 波紋：遅延をずらして外側へ薄く広がる */
.js-motion .stop.is-open .stop-pin__ripple:nth-child(1) {
  animation: pin-ripple 1.1s cubic-bezier(.15, .6, .25, 1) both;
}
.js-motion .stop.is-open .stop-pin__ripple:nth-child(2) {
  animation: pin-ripple 1.1s cubic-bezier(.15, .6, .25, 1) .14s both;
  border-color: var(--mk-ink-2);
}
.js-motion .stop.is-open .stop-pin__ripple:nth-child(3) {
  animation: pin-ripple 1.1s cubic-bezier(.15, .6, .25, 1) .28s both;
  border-color: var(--mk-ink-3);
}

@keyframes pin-plop {
  0% { transform: scale(1); }
  30% { transform: scale(.72); } /* 水面に沈む */
  70% { transform: scale(1.08); }
  100% { transform: scale(1); }
}

@keyframes pin-ripple {
  0% {
    opacity: .55;
    transform: scale(1);
  }
  100% {
    opacity: 0;
    transform: scale(3.2);
  }
}

/* カード塊：写真 → 年号 → 見出し → 本文 */
.stop-card {
  grid-row: 1;
  display: grid;
  gap: var(--mk-gap-item);
}

.stop--a .stop-card { grid-column: 3 / span 5; }
.stop--b .stop-card { grid-column: 6 / span 5; }
.stop--c .stop-card { grid-column: 2 / span 4; }
.stop--d .stop-card { grid-column: 7 / span 5; }
.stop--e .stop-card { grid-column: 3 / span 6; }
.stop--f .stop-card { grid-column: 5 / span 5; }
.stop--g .stop-card { grid-column: 2 / span 5; }

.stop-photo {
  aspect-ratio: 4 / 3;
  overflow: hidden; /* 拡大→等倍のはみ出しを切る */
}
.stop-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.stop-text { display: grid; gap: var(--mk-gap-inside); }

.stop-year {
  font-family: var(--mk-font-en);
  font-size: var(--mk-fs-36);
  line-height: 40px;
  font-weight: 600;
  letter-spacing: -.035em;
  font-variant-numeric: tabular-nums;
}
.stop-title {
  font-size: var(--mk-fs-24);
  line-height: 36px;
  font-weight: 700;
  letter-spacing: .01em;
}
.stop-desc {
  font-size: var(--mk-fs-14);
  line-height: 28px;
}

/* 通過前：塊ごと少し下＋グレー写真＋薄い文字 */
.js-motion .stop-card {
  transform: translateY(10px);
  transition: transform var(--mk-dur-slow) var(--mk-ease);
}
.js-motion .stop.is-open .stop-card { transform: none; }

/* 通過前：グレー＋少し拡大。到達でカラー＋等倍へ */
.js-motion .stop-photo img {
  filter: grayscale(1);
  transform: scale(1.12);
  transition:
    filter var(--mk-dur-slow) var(--mk-ease),
    transform var(--mk-dur-slow) var(--mk-ease);
  transition-delay: calc(1 * var(--mk-stagger));
}
.js-motion .stop.is-open .stop-photo img {
  filter: grayscale(0);
  transform: scale(1);
}

.js-motion .stop-year,
.js-motion .stop-title,
.js-motion .stop-desc {
  color: var(--mk-ink-3);
  transition: color var(--mk-dur-slow) var(--mk-ease);
}
.js-motion .stop-title { transition-delay: calc(1 * var(--mk-stagger)); }
.js-motion .stop-desc { transition-delay: calc(2 * var(--mk-stagger)); }

.js-motion .stop.is-open .stop-year,
.js-motion .stop.is-open .stop-title,
.js-motion .stop.is-open .stop-desc { color: var(--mk-ink); }

/* ---------- Outro ---------- */
.outro { padding-bottom: calc(var(--mk-gap-section) + 64px); }
.outro-title {
  font-family: var(--mk-font-en);
  font-size: var(--mk-fs-display);
  line-height: .95;
  font-weight: 700;
  letter-spacing: -.055em;
}
.outro-note {
  margin-top: var(--mk-gap-group);
  font-size: var(--mk-fs-12);
  line-height: 20px;
  color: var(--mk-ink-2);
}

/* ---------- Dock ---------- */
.dock {
  position: fixed;
  left: 50%;
  bottom: var(--mk-space-16);
  z-index: 10;
  transform: translateX(-50%);
  display: flex;
  padding: 4px;
  border-radius: var(--mk-radius-full);
  background: rgba(244, 244, 243, .9);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.dock a {
  padding: 8px 16px;
  border-radius: var(--mk-radius-full);
  font-family: var(--mk-font-en);
  font-size: var(--mk-fs-13);
  line-height: 20px;
  font-weight: 500;
  letter-spacing: 0;
  font-variant-numeric: tabular-nums;
  color: var(--mk-ink-2);
  text-decoration: none;
  transition: background-color var(--mk-dur-fast) var(--mk-ease), color var(--mk-dur-fast) var(--mk-ease);
}
.dock a:hover { color: var(--mk-ink); }
.dock a.is-current { background: var(--mk-ink); color: var(--mk-paper); }
.dock a:focus-visible { outline: 1px solid var(--mk-ink); outline-offset: 2px; }

/* ---------- Tablet ---------- */
@media (max-width: 1024px) {
  .hero-intro { grid-column: 1 / span 7; }
  .hero-hint { grid-column: 9 / span 4; }

  .stop--pin-l .stop-pin,
  .stop--pin-r .stop-pin { grid-column: 1; justify-self: center; }

  .stop--a .stop-card,
  .stop--b .stop-card,
  .stop--c .stop-card,
  .stop--d .stop-card,
  .stop--e .stop-card,
  .stop--f .stop-card,
  .stop--g .stop-card { grid-column: 2 / span 10; }

  .stop--b .stop-card,
  .stop--d .stop-card,
  .stop--f .stop-card { grid-column: 3 / span 9; }
}

/* ---------- Phone ---------- */
@media (max-width: 640px) {
  .hero-fact { grid-column: span 2; }
  .hero-intro, .hero-hint { grid-column: 1 / -1; }
  .hero-hint { margin-top: var(--mk-gap-item); }

  .stop + .stop { margin-top: var(--mk-gap-group); }

  .stop--pin-l .stop-pin,
  .stop--pin-r .stop-pin {
    grid-column: 1;
    justify-self: start;
    margin-left: 2px;
  }

  .stop--a .stop-card,
  .stop--b .stop-card,
  .stop--c .stop-card,
  .stop--d .stop-card,
  .stop--e .stop-card,
  .stop--f .stop-card,
  .stop--g .stop-card { grid-column: 2 / -1; }

  .dock a { padding: 6px 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .js-motion .stop-card { transform: none; transition: none; }
  .js-motion .stop-year,
  .js-motion .stop-title,
  .js-motion .stop-desc {
    color: var(--mk-ink);
    transition: none;
  }
  .js-motion .stop-photo img {
    filter: none;
    transform: none;
    transition: none;
  }
  .stop-pin { transition: none; }
  .js-motion .stop.is-open .stop-pin,
  .js-motion .stop.is-open .stop-pin__ripple { animation: none !important; }
}