/* =========================================================================
   Kansai to Tokyo — December 2026 family itinerary
   index.html + assets/styles.css + assets/route.svg + assets/favicon.svg
   Static site: upload the whole folder, no build step, no dependencies.
   Fonts load from Google Fonts; everything else is local.
   ========================================================================= */

/* --- reset ---------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; }
img, svg { max-width: 100%; height: auto; display: block; }
[hidden] { display: none !important; }

  :root {
    --ground:      #F3F6FA;
    --surface:     #FFFFFF;
    --surface-alt: #E9EEF6;
    --ink:         #131A2A;
    --ink-soft:    #46536B;
    --ink-mute:    #77839A;
    --rule:        #D3DBE7;
    --rule-soft:   #E4E9F1;
    --indigo:      #2C4470;
    --lantern:     #D45F27;
    --lantern-bg:  #FBEDE5;
    --snow:        #35688F;
    --snow-bg:     #E4EEF6;
    --moss:        #2E7D4F;
    --moss-bg:     #E3F3E9;
    --shadow:      0 1px 2px rgba(19,26,42,.05), 0 8px 24px -12px rgba(19,26,42,.18);
  }

  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      --ground:      #0D1120;
      --surface:     #161C2D;
      --surface-alt: #1E2537;
      --ink:         #E7ECF4;
      --ink-soft:    #AEB9CC;
      --ink-mute:    #7D89A0;
      --rule:        #2A3348;
      --rule-soft:   #222A3C;
      --indigo:      #8DA8D4;
      --lantern:     #F08B54;
      --lantern-bg:  #2E1E14;
      --snow:        #7FB0D2;
      --snow-bg:     #16222E;
      --moss:        #6FC48F;
      --moss-bg:     #14281C;
      --shadow:      0 1px 2px rgba(0,0,0,.3), 0 8px 24px -12px rgba(0,0,0,.6);
    }
  }

  :root[data-theme="dark"] {
    --ground:      #0D1120;
    --surface:     #161C2D;
    --surface-alt: #1E2537;
    --ink:         #E7ECF4;
    --ink-soft:    #AEB9CC;
    --ink-mute:    #7D89A0;
    --rule:        #2A3348;
    --rule-soft:   #222A3C;
    --indigo:      #8DA8D4;
    --lantern:     #F08B54;
    --lantern-bg:  #2E1E14;
    --snow:        #7FB0D2;
    --snow-bg:     #16222E;
    --moss:        #6FC48F;
    --moss-bg:     #14281C;
    --shadow:      0 1px 2px rgba(0,0,0,.3), 0 8px 24px -12px rgba(0,0,0,.6);
  }

  * { box-sizing: border-box; }

  body {
    background: var(--ground); color: var(--ink);
    font-family: "Public Sans", ui-sans-serif, system-ui, -apple-system, "Segoe UI", sans-serif;
    font-size: 16px; line-height: 1.6; margin: 0;
    -webkit-font-smoothing: antialiased;
  }

  .wrap { max-width: 960px; margin: 0 auto; padding: 0 24px 96px; }
  h1, h2, h3, h4 { text-wrap: balance; margin: 0; }

  .eyebrow {
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 11.5px; font-weight: 500; letter-spacing: .16em;
    text-transform: uppercase; color: var(--lantern); margin: 0 0 18px;
  }

  .masthead { padding: 72px 0 40px; border-bottom: 1px solid var(--rule); }
  .masthead h1 {
    font-family: "Newsreader", Georgia, "Times New Roman", serif;
    font-size: clamp(2.5rem, 6.2vw, 4rem);
    font-weight: 500; line-height: 1.03; letter-spacing: -.02em;
  }
  .masthead h1 em { font-style: italic; color: var(--indigo); }
  .standfirst { font-size: 1.075rem; color: var(--ink-soft); max-width: 62ch; margin: 22px 0 0; }

  .bookends {
    display: grid; grid-template-columns: 1fr auto 1fr;
    margin: 38px 0 0; background: var(--surface);
    border: 1px solid var(--rule); border-radius: 3px;
    box-shadow: var(--shadow); overflow: hidden;
  }
  .leg { padding: 20px 24px; display: flex; flex-direction: column; gap: 6px; }
  .leg-label {
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 10.5px; letter-spacing: .15em; text-transform: uppercase; color: var(--ink-mute);
  }
  .leg-route {
    font-family: "IBM Plex Mono", ui-monospace, monospace; font-variant-numeric: tabular-nums;
    font-size: 1.28rem; font-weight: 600; letter-spacing: -.01em;
  }
  .leg-route .arrow { color: var(--lantern); font-weight: 400; padding: 0 4px; }
  .leg-when { font-size: .87rem; color: var(--ink-soft); }
  .bookend-divider { width: 1px; background: var(--rule); }

  .shape {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 1px; margin: 46px 0 0; background: var(--rule);
    border: 1px solid var(--rule); border-radius: 3px; overflow: hidden;
  }
  .shape-cell { background: var(--surface); padding: 20px 22px; display: flex; flex-direction: column; gap: 5px; }
  .shape-place { font-family: "Newsreader", Georgia, serif; font-size: 1.3rem; font-weight: 600; letter-spacing: -.01em; }
  .shape-nights {
    font-family: "IBM Plex Mono", ui-monospace, monospace; font-variant-numeric: tabular-nums;
    font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--lantern);
  }
  .shape-note { font-size: .87rem; color: var(--ink-mute); }

  .alarm {
    display: flex; gap: 18px; align-items: flex-start;
    background: var(--lantern-bg); border-left: 3px solid var(--lantern);
    padding: 20px 24px; margin: 30px 0 0; border-radius: 0 3px 3px 0;
  }
  .alarm-mark {
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 10.5px; font-weight: 600; letter-spacing: .14em;
    text-transform: uppercase; color: var(--lantern);
    padding-top: 4px; white-space: nowrap;
  }
  .alarm p { margin: 0; font-size: .945rem; color: var(--ink-soft); max-width: 66ch; }
  .alarm p + p { margin-top: 9px; }
  .alarm strong { color: var(--ink); font-weight: 600; }

  .why { margin: 22px 0 0; padding: 24px 26px; background: var(--surface-alt); border-radius: 3px; }
  .why h2 {
    font-family: "Public Sans", sans-serif; font-size: .82rem; font-weight: 700;
    letter-spacing: .1em; text-transform: uppercase; color: var(--indigo); margin-bottom: 12px;
  }
  .why p { margin: 0; font-size: .945rem; color: var(--ink-soft); max-width: 68ch; }
  .why p + p { margin-top: 9px; }
  .why strong { color: var(--ink); font-weight: 600; }

  .chapter { margin: 72px 0 0; }
  .chapter-head {
    display: flex; flex-wrap: wrap; align-items: baseline; gap: 10px 20px;
    padding-bottom: 14px; border-bottom: 2px solid var(--indigo);
  }
  .chapter-head h2 {
    font-family: "Newsreader", Georgia, serif;
    font-size: 2rem; font-weight: 500; letter-spacing: -.015em; line-height: 1.1;
  }
  .chapter-nights {
    font-family: "IBM Plex Mono", ui-monospace, monospace; font-variant-numeric: tabular-nums;
    font-size: 11.5px; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-mute);
  }
  .chip {
    margin-left: auto; display: inline-flex; align-items: center;
    font-family: "IBM Plex Mono", ui-monospace, monospace; font-variant-numeric: tabular-nums;
    font-size: 11.5px; padding: 5px 11px; border-radius: 2px;
    background: var(--snow-bg); color: var(--snow); white-space: nowrap;
  }

  .day {
    display: grid; grid-template-columns: 104px 1fr; gap: 26px;
    padding: 24px 0; border-bottom: 1px solid var(--rule-soft);
  }
  .rail { display: flex; flex-direction: column; gap: 2px; padding-top: 2px; }
  .rail-date {
    font-family: "IBM Plex Mono", ui-monospace, monospace; font-variant-numeric: tabular-nums;
    font-size: 1rem; font-weight: 600; letter-spacing: -.02em;
  }
  .rail-dow {
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 10.5px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-mute);
  }
  .dbody h3 { font-size: 1.06rem; font-weight: 700; letter-spacing: -.005em; margin-bottom: 7px; }
  .dbody p { margin: 0; color: var(--ink-soft); font-size: .94rem; max-width: 64ch; }
  .dbody p + p { margin-top: 9px; }
  .dbody strong { color: var(--ink); font-weight: 600; }
  .dnote {
    margin-top: 11px; padding-left: 14px; border-left: 2px solid var(--rule);
    font-size: .875rem; color: var(--ink-mute); max-width: 62ch;
  }

  .tag {
    display: inline-block; font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 10px; font-weight: 600; letter-spacing: .12em; text-transform: uppercase;
    padding: 3px 8px; border-radius: 2px; vertical-align: 2px; margin-left: 9px;
    background: var(--surface-alt); color: var(--indigo);
  }
  .tag.key { background: var(--lantern-bg); color: var(--lantern); }
  .tag.booked { background: var(--moss-bg); color: var(--moss); }

  .section { margin: 80px 0 0; }
  .section > h2 {
    font-family: "Newsreader", Georgia, serif;
    font-size: 2rem; font-weight: 500; letter-spacing: -.015em;
    padding-bottom: 14px; border-bottom: 2px solid var(--indigo);
  }
  .section-lede { margin: 20px 0 0; color: var(--ink-soft); max-width: 64ch; font-size: .975rem; }

  .booking-list { display: flex; flex-direction: column; margin: 26px 0 0; }
  .booking { display: grid; grid-template-columns: 180px 1fr; gap: 24px; padding: 19px 0; border-bottom: 1px solid var(--rule-soft); }
  .booking-when {
    font-family: "IBM Plex Mono", ui-monospace, monospace; font-variant-numeric: tabular-nums;
    font-size: 11.5px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase;
    color: var(--indigo); padding-top: 3px;
  }
  .booking.hot .booking-when { color: var(--lantern); }
  .booking h3 { font-size: 1rem; font-weight: 700; margin-bottom: 5px; }
  .booking p { margin: 0; font-size: .915rem; color: var(--ink-soft); max-width: 62ch; }
  .booking strong { color: var(--ink); font-weight: 600; }

  .notes-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(268px, 1fr));
    gap: 1px; margin: 30px 0 0; background: var(--rule);
    border: 1px solid var(--rule); border-radius: 3px; overflow: hidden;
  }
  .note-card { background: var(--surface); padding: 22px 24px; }
  .note-card h3 {
    font-size: .8rem; font-weight: 700; letter-spacing: .1em;
    text-transform: uppercase; color: var(--indigo); margin-bottom: 10px;
  }
  .note-card p { margin: 0; font-size: .91rem; color: var(--ink-soft); }
  .note-card strong { color: var(--ink); font-weight: 600; }

  .table-scroll { overflow-x: auto; margin: 30px 0 0; }
  table { width: 100%; min-width: 560px; border-collapse: collapse; font-size: .92rem; }
  th, td { text-align: left; padding: 13px 16px 13px 0; border-bottom: 1px solid var(--rule-soft); }
  th {
    font-family: "IBM Plex Mono", ui-monospace, monospace;
    font-size: 10.5px; font-weight: 600; letter-spacing: .12em;
    text-transform: uppercase; color: var(--ink-mute); border-bottom: 1px solid var(--rule);
  }
  td { color: var(--ink-soft); }
  td:first-child { color: var(--ink); font-weight: 600; }
  td.num { font-family: "IBM Plex Mono", ui-monospace, monospace; font-variant-numeric: tabular-nums; }

  .footer {
    margin: 80px 0 0; padding-top: 26px; border-top: 1px solid var(--rule);
    font-size: .85rem; color: var(--ink-mute); max-width: 66ch;
  }
  .footer a { color: var(--indigo); text-decoration: underline; text-underline-offset: 2px; }
  .footer a:focus-visible { outline: 2px solid var(--lantern); outline-offset: 3px; }

  @media (max-width: 720px) {
    .bookends { grid-template-columns: 1fr; }
    .bookend-divider { width: auto; height: 1px; }
    .day { grid-template-columns: 1fr; gap: 10px; }
    .rail { flex-direction: row; align-items: baseline; gap: 10px; }
    .booking { grid-template-columns: 1fr; gap: 8px; }
    .chip { margin-left: 0; }
    .masthead { padding-top: 48px; }
    .alarm { flex-direction: column; gap: 8px; }
  }

/* --- route map figure ----------------------------------------------- */
.routemap { margin: 46px 0 0; padding: 0; }
.routemap img {
  width: 100%; max-width: 880px; margin: 0 auto;
}
.routemap figcaption {
  margin-top: 14px; text-align: center;
  font-family: "IBM Plex Mono", ui-monospace, monospace;
  font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
  color: var(--ink-mute);
}
@media (max-width: 720px) {
  .routemap { overflow-x: auto; }
  .routemap img { min-width: 640px; }
}

/* --- print ------------------------------------------------------------ */
@media print {
  :root {
    --ground:#fff; --surface:#fff; --surface-alt:#f4f4f4;
    --ink:#000; --ink-soft:#222; --ink-mute:#555;
    --rule:#bbb; --rule-soft:#ddd; --shadow:none;
  }
  body { font-size: 11pt; }
  .wrap { max-width: none; padding: 0; }
  .chapter, .section { margin-top: 28px; page-break-before: auto; }
  .day, .booking, .note-card { page-break-inside: avoid; }
  .masthead { padding-top: 0; }
  .footer a { text-decoration: none; }
  .footer a::after { content: " (" attr(href) ")"; font-size: 8pt; color: #666; }
}