/* ════════════════════════════════════════════════════════════════════════
   modelrr.davestj.com — retro railroad design system
   Vintage travel-poster / enamel-herald aesthetic on a modern responsive grid.
   No external assets — every graphic on this site is self-generated SVG/canvas.
   ════════════════════════════════════════════════════════════════════════ */

/* ── Design tokens ─────────────────────────────────────────────────────── */
:root {
  /* paper & ink — aged-poster light theme */
  --paper:      #f4eddc;
  --paper-hi:   #faf5e8;
  --paper-lo:   #e9dfc8;
  --ink:        #2b2620;
  --ink-soft:   #56503f;

  /* brand — Pullman green, boxcar rust, polished brass */
  --pullman:    #1f4d3a;
  --pullman-hi: #2a6a50;
  --rust:       #b3542e;
  --rust-hi:    #cc6438;
  --brass:      #c9a227;
  --brass-soft: #e3c766;
  --cream-text: #f6efdd;

  /* hero scene */
  --sky-hi:     #f2e3bd;
  --sky-lo:     #e8b970;
  --sun-core:   #f7d789;
  --sun-mid:    #efab55;
  --sun-edge:   rgba(239,171,85,0);
  --ray:        rgba(214,142,60,.16);
  --ridge-far:  #7a9270;
  --ridge-near: #3f6b4f;
  --silhouette: #26221c;
  --smoke:      rgba(66,60,52,.55);

  --card:       var(--paper-hi);
  --card-edge:  #d8cbaa;
  --shadow:     0 10px 24px -12px rgba(43,38,32,.35);

  --font-display: "Avenir Next Condensed", "Arial Narrow", "Helvetica Neue Condensed", "Futura", sans-serif-condensed, sans-serif;
  --font-body:    "Iowan Old Style", "Palatino", "Book Antiqua", Georgia, serif;
  --font-mono:    "Courier New", ui-monospace, monospace;

  --wrap: 1160px;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    /* night depot */
    --paper:      #1c1915;
    --paper-hi:   #262119;
    --paper-lo:   #14110d;
    --ink:        #ece3cf;
    --ink-soft:   #b6ab90;

    --pullman:    #2a6a50;
    --pullman-hi: #348263;
    --rust:       #cc6438;
    --rust-hi:    #e0733f;
    --brass:      #d9b545;
    --brass-soft: #ecd07a;

    --sky-hi:     #241f2e;
    --sky-lo:     #4a2c31;
    --sun-core:   #e8b45c;
    --sun-mid:    #a55f3a;
    --sun-edge:   rgba(165,95,58,0);
    --ray:        rgba(214,142,60,.08);
    --ridge-far:  #2c3a2e;
    --ridge-near: #1d2b20;
    --silhouette: #0d0b09;
    --smoke:      rgba(214,204,188,.35);

    --card:       #262119;
    --card-edge:  #453b2c;
    --shadow:     0 10px 24px -12px rgba(0,0,0,.7);
  }
}

/* ── Reset-ish ─────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg, canvas { max-width: 100%; display: block; }
a { color: var(--rust); }
a:hover { color: var(--rust-hi); }

/* subtle paper grain via layered gradients */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none; z-index: 0;
  background-image:
    radial-gradient(rgba(43,38,32,.028) 1px, transparent 1.4px),
    radial-gradient(rgba(43,38,32,.02) 1px, transparent 1.6px);
  background-size: 7px 7px, 11px 11px;
  background-position: 0 0, 4px 6px;
}
body > * { position: relative; z-index: 1; }

.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: clamp(16px, 4vw, 32px); }
.wrap.narrow { max-width: 820px; }

.skip-link {
  position: absolute; left: -999px; top: 8px; z-index: 100;
  background: var(--pullman); color: var(--cream-text);
  padding: 8px 16px; border-radius: 6px;
}
.skip-link:focus { left: 8px; }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  clip-path: inset(50%); overflow: hidden; white-space: nowrap;
}

/* ── Header ────────────────────────────────────────────────────────────── */
.site-header {
  background: var(--pullman);
  color: var(--cream-text);
  border-bottom: 3px solid var(--brass);
}
.header-inner {
  display: flex; align-items: center; gap: 20px;
  padding-block: 12px;
}
.herald {
  display: flex; align-items: center; gap: 14px;
  text-decoration: none; color: inherit;
}
.herald-badge { width: 62px; height: 62px; flex: none; }
.hb-ring  { fill: var(--brass); }
.hb-face  { fill: var(--pullman-hi); stroke: var(--paper); stroke-width: 1.5; }
.hb-wing path { fill: var(--brass); }
.hb-rail rect { fill: var(--brass-soft); }
.hb-loco rect, .hb-loco circle { fill: var(--paper); }
.hb-text  { fill: var(--paper); font: 700 9.5px var(--font-display); letter-spacing: 1.5px; }

.herald-word { display: flex; flex-direction: column; line-height: 1.1; }
.herald-title {
  font-family: var(--font-display);
  font-weight: 700; font-size: clamp(20px, 2.6vw, 28px);
  letter-spacing: 3px;
}
.herald-sub {
  font-family: var(--font-mono);
  font-size: 10.5px; letter-spacing: 1.6px;
  color: var(--brass-soft);
}

.site-nav { margin-left: auto; }
.site-nav ul { display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.site-nav a {
  display: block; padding: 9px 16px;
  font-family: var(--font-display); font-weight: 600;
  font-size: 15px; letter-spacing: 1.8px; text-transform: uppercase;
  color: var(--cream-text); text-decoration: none;
  border: 1.5px solid transparent; border-radius: 6px;
  transition: border-color .18s, color .18s, background .18s;
}
.site-nav a:hover  { border-color: var(--brass); color: var(--brass-soft); }
.site-nav a.active { background: var(--brass); color: var(--pullman); }

.nav-toggle {
  display: none; margin-left: auto;
  background: none; border: 1.5px solid var(--brass);
  color: var(--cream-text); border-radius: 6px; padding: 6px 8px;
  cursor: pointer;
}

/* BN-green / GN-orange / brass heritage stripes */
.header-stripes, .footer-stripes { display: flex; height: 8px; }
.header-stripes span, .footer-stripes span { flex: 1; }
.header-stripes span:nth-child(1), .footer-stripes span:nth-child(1) { background: var(--rust); }
.header-stripes span:nth-child(2), .footer-stripes span:nth-child(2) { background: var(--brass); }
.header-stripes span:nth-child(3), .footer-stripes span:nth-child(3) { background: var(--pullman-hi); }

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .site-nav {
    display: none;
    position: absolute; left: 0; right: 0; top: 100%;
    background: var(--pullman); z-index: 50;
    border-bottom: 3px solid var(--brass);
  }
  .site-header { position: relative; }
  .site-nav.open { display: block; }
  .site-nav ul { flex-direction: column; padding: 10px 16px 16px; }
}

/* ── Hero ──────────────────────────────────────────────────────────────── */
.hero { position: relative; overflow: hidden; background: var(--sky-lo); }
.hero-scene { position: relative; }
.hero-svg { width: 100%; height: clamp(340px, 52vw, 560px); }
.smoke-canvas {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  pointer-events: none;
}

.sun-rays path { fill: var(--ray); }
.sun-rays { animation: rays 90s linear infinite; transform-origin: center; }
@keyframes rays { to { transform: translate(600px, 300px) rotate(360deg); } }
.sun-rays { transform: translate(600px, 300px); }

.ridge-far  { fill: var(--ridge-far); }
.ridge-near { fill: var(--ridge-near); }
.trackbed rect { fill: var(--silhouette); }
.trackbed .tie { fill: var(--silhouette); opacity: .85; }
.trackbed .railline { fill: var(--brass); opacity: .8; }

.loco rect, .loco circle, .loco path { fill: var(--silhouette); }
.loco .cab-window { fill: var(--sun-core); opacity: .9; }
.loco .tender { fill: var(--silhouette); }
.loco .wheel-hubs circle { fill: var(--paper-lo); opacity: .5; }
.loco .siderod { fill: var(--paper-lo); opacity: .35; animation: rod 1.1s ease-in-out infinite; }
@keyframes rod { 0%,100% { transform: translateX(0); } 50% { transform: translateX(7px); } }

.puffs circle { fill: var(--smoke); }
.puffs circle:nth-child(1) { animation: puff 4s ease-out infinite; }
.puffs circle:nth-child(2) { animation: puff 4s 1.3s ease-out infinite; }
.puffs circle:nth-child(3) { animation: puff 4s 2.6s ease-out infinite; }
@keyframes puff {
  0%   { opacity: .7; transform: translate(0,0) scale(.6); }
  100% { opacity: 0;  transform: translate(26px,-90px) scale(1.8); }
}
.js-smoke .puffs { display: none; } /* canvas takes over when JS runs */

.hero-copy {
  position: relative;
  text-align: center;
  padding-block: clamp(28px, 5vw, 56px);
  background:
    linear-gradient(to bottom, transparent, var(--paper) 30%);
  margin-top: -70px;
}
.hero-kicker {
  font-family: var(--font-mono);
  letter-spacing: 3px; font-size: 13px;
  color: var(--rust); margin: 0 0 4px;
}
.hero-title {
  font-family: var(--font-display);
  font-size: clamp(52px, 9vw, 110px);
  font-weight: 700; letter-spacing: .06em;
  margin: 0; line-height: 1;
  color: var(--pullman);
  text-shadow: 3px 3px 0 var(--brass-soft);
}
.hero-tag {
  font-size: clamp(16px, 2vw, 20px);
  color: var(--ink-soft);
  max-width: 640px; margin: 14px auto 24px;
}
.hero-actions { display: flex; gap: 14px; justify-content: center; flex-wrap: wrap; }

.btn {
  font-family: var(--font-display); font-weight: 700;
  letter-spacing: 2px; text-transform: uppercase; font-size: 15px;
  text-decoration: none; border-radius: 8px;
  padding: 13px 26px; transition: transform .15s, box-shadow .15s;
}
.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.btn-primary { background: var(--rust); color: var(--cream-text); border: 2px solid var(--rust); }
.btn-primary:hover { background: var(--rust-hi); color: var(--cream-text); }
.btn-ghost { background: transparent; color: var(--pullman); border: 2px solid var(--pullman); }
.btn-ghost:hover { color: var(--pullman-hi); border-color: var(--pullman-hi); }

/* ── Sections ──────────────────────────────────────────────────────────── */
.section { padding-block: clamp(44px, 7vw, 84px); }
.section-head { text-align: center; margin-bottom: clamp(28px, 4vw, 48px); }
.section-head h2 {
  font-family: var(--font-display);
  font-size: clamp(26px, 4vw, 40px);
  letter-spacing: .05em; text-transform: uppercase;
  color: var(--pullman); margin: 0 0 6px;
}
.section-head p { color: var(--ink-soft); margin: 0; font-size: 17px; }
.tick { color: var(--brass); }

/* reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ── Roads We Run — heralds ────────────────────────────────────────────── */
.roads { background: var(--paper-lo); }
.herald-grid {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: clamp(14px, 2vw, 22px);
  grid-template-columns: repeat(auto-fit, minmax(168px, 1fr));
}
.herald-card {
  background: var(--card);
  border: 1.5px solid var(--card-edge);
  border-radius: var(--radius);
  padding: 20px 14px 16px;
  text-align: center;
  box-shadow: var(--shadow);
  transition: transform .18s;
}
.herald-card:hover { transform: translateY(-4px) rotate(-.5deg); }
.hc-badge { display: block; width: 96px; margin: 0 auto 12px; }
.hc-name { display: block; font-family: var(--font-display); font-weight: 700; letter-spacing: .5px; font-size: 16px; }
.hc-note { display: block; font-family: var(--font-mono); font-size: 11px; letter-spacing: .5px; color: var(--ink-soft); margin-top: 3px; }

.rb-ring { fill: var(--rb-ring, var(--brass)); }
.rb-face { fill: var(--rb-face, var(--pullman)); }
.rb-band { fill: var(--rb-band, var(--rust)); }
.rb-abbr { fill: var(--rb-text, #fff); font: 800 20px var(--font-display); letter-spacing: 1px; }
.rb-arc  { fill: var(--rb-arc, rgba(255,255,255,.75)); font: 600 8.5px var(--font-mono); letter-spacing: 2.2px; }

/* road color schemes — signature liveries, self-drawn */
.road-bnsf { --rb-face:#2d2a26; --rb-band:#ef7c22; --rb-text:#111;    --rb-ring:#ef7c22; --rb-arc:#f2b98c; }
.road-bn   { --rb-face:#2e5339; --rb-band:#ffffff; --rb-text:#2e5339; --rb-ring:#1e3a27; --rb-arc:#cfe0d3; }
.road-atsf { --rb-face:#d7d5cd; --rb-band:#c8102e; --rb-text:#ffffff; --rb-ring:#c8102e; --rb-arc:#8f8d85; }
.road-gn   { --rb-face:#2e4934; --rb-band:#e8703a; --rb-text:#ffffff; --rb-ring:#e8703a; --rb-arc:#d9c9a3; }
.road-bo   { --rb-face:#1d4f91; --rb-band:#ffffff; --rb-text:#1d4f91; --rb-ring:#123a6e; --rb-arc:#c8d9ef; }
.road-co   { --rb-face:#1c3f94; --rb-band:#ffd200; --rb-text:#1c3f94; --rb-ring:#ffd200; --rb-arc:#bdcdf2; }
.road-csx  { --rb-face:#00467f; --rb-band:#eaa733; --rb-text:#00375f; --rb-ring:#eaa733; --rb-arc:#a9c6e0; }
.road-ns   { --rb-face:#1a1a1a; --rb-band:#ffffff; --rb-text:#1a1a1a; --rb-ring:#5c5c5c; --rb-arc:#bdbdbd; }
.road-cn   { --rb-face:#cf1a2c; --rb-band:#ffffff; --rb-text:#cf1a2c; --rb-ring:#8f1220; --rb-arc:#f4c3c8; }
.road-bcr  { --rb-face:#114b3f; --rb-band:#d22630; --rb-text:#ffffff; --rb-ring:#d22630; --rb-arc:#bcd8cf; }

/* ── Scales ────────────────────────────────────────────────────────────── */
.scale-cards { display: grid; gap: 24px; grid-template-columns: repeat(auto-fit, minmax(290px, 1fr)); }
.scale-card {
  background: var(--card);
  border: 1.5px solid var(--card-edge);
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: var(--shadow);
}
.sc-badge { max-width: 210px; margin-bottom: 12px; }
.scb-frame { fill: var(--pullman); stroke: var(--brass); stroke-width: 3; }
.scb-scale { fill: var(--cream-text); font: 800 34px var(--font-display); letter-spacing: 2px; }
.scb-ratio { fill: var(--brass-soft); font: 600 10px var(--font-mono); letter-spacing: 1px; }
.scale-card h3 {
  font-family: var(--font-display); text-transform: uppercase;
  letter-spacing: 1.5px; color: var(--rust); margin: 6px 0 8px; font-size: 22px;
}
.scale-card p { margin: 0; color: var(--ink-soft); }

/* ── Craft / heritage ──────────────────────────────────────────────────── */
.craft { background: var(--paper-lo); }
.craft-grid { display: grid; gap: 22px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.craft-card {
  background: var(--card);
  border: 1.5px solid var(--card-edge);
  border-top: 5px solid var(--brass);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}
.craft-icon { width: 46px; height: 46px; margin-bottom: 12px; }
.craft-icon * { fill: none; stroke: var(--rust); stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; }
.craft-icon .ci-gear-face, .craft-icon .ci-hub { fill: none; }
.craft-icon .ci-tooth { fill: var(--rust); stroke: none; }
.craft-card h3 {
  font-family: var(--font-display); text-transform: uppercase;
  letter-spacing: 1.2px; font-size: 19px; color: var(--pullman); margin: 0 0 8px;
}
.craft-card p { margin: 0; font-size: 15.5px; color: var(--ink-soft); }

/* ── Departments ───────────────────────────────────────────────────────── */
.dept-grid { display: grid; gap: 22px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.dept-card {
  display: block; text-decoration: none; color: inherit;
  background: var(--card);
  border: 1.5px solid var(--card-edge);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: transform .18s, border-color .18s;
}
.dept-card:hover { transform: translateY(-4px); border-color: var(--brass); color: inherit; }
.dept-icon { width: 48px; height: 48px; margin-bottom: 12px; }
.dept-icon .di-line, .dept-icon .di-frame { fill: none; stroke: var(--pullman-hi); stroke-width: 3; stroke-linecap: round; }
.dept-icon .di-line2 { fill: var(--pullman-hi); }
.dept-icon .di-node { fill: var(--rust); }
.dept-icon .di-body { fill: none; stroke: var(--pullman-hi); stroke-width: 3; }
.dept-card h3 {
  font-family: var(--font-display); text-transform: uppercase;
  letter-spacing: 1.4px; font-size: 20px; margin: 0 0 6px; color: var(--pullman);
}
.dept-card p { margin: 0 0 12px; font-size: 15px; color: var(--ink-soft); }
.dept-go { font-family: var(--font-mono); font-size: 13px; letter-spacing: 1px; color: var(--rust); }

/* ── Page banner (inner pages) ─────────────────────────────────────────── */
.page-banner {
  background: var(--pullman);
  color: var(--cream-text);
  text-align: center;
  padding-block: clamp(36px, 6vw, 64px);
  border-bottom: 3px solid var(--brass);
}
.page-banner h1 {
  font-family: var(--font-display);
  font-size: clamp(34px, 6vw, 58px);
  letter-spacing: .06em; text-transform: uppercase;
  margin: 4px 0 0;
}
.page-banner .hero-kicker { color: var(--brass-soft); }

/* ── Prose (about) ─────────────────────────────────────────────────────── */
.prose h3 {
  font-family: var(--font-display); text-transform: uppercase;
  letter-spacing: 1.4px; color: var(--pullman);
  font-size: 22px; margin: 34px 0 10px;
}
.prose h3:first-child { margin-top: 0; }
.prose p { font-size: 17px; }
.prose strong { color: var(--rust); }

.ticket-divider {
  display: flex; gap: 12px; flex-wrap: wrap; justify-content: center;
  margin-top: 40px; padding-top: 26px;
  border-top: 2px dashed var(--card-edge);
}
.ticket-chip {
  font-family: var(--font-mono); font-size: 12px; letter-spacing: 1.6px;
  border: 1.5px dashed var(--rust); color: var(--rust);
  border-radius: 4px; padding: 5px 12px;
  background: var(--card);
}

/* ── Notice board (stub pages) ─────────────────────────────────────────── */
.notice-board { display: grid; place-items: center; }
.notice-card {
  max-width: 620px;
  background: var(--card);
  border: 1.5px solid var(--card-edge);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 34px 34px 28px;
  position: relative;
  transform: rotate(-.6deg);
}
.notice-stamp {
  position: absolute; top: -14px; left: 26px;
  background: var(--rust); color: var(--cream-text);
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 2.4px;
  padding: 5px 14px; border-radius: 4px;
  transform: rotate(1.2deg);
}
.notice-card h3 {
  font-family: var(--font-display); text-transform: uppercase;
  letter-spacing: 1.2px; color: var(--pullman); margin: 4px 0 10px; font-size: 24px;
}
.notice-card p { color: var(--ink-soft); }
.notice-fine { font-family: var(--font-mono); font-size: 13px; letter-spacing: .6px; }

/* ── Footer ────────────────────────────────────────────────────────────── */
.site-footer { background: var(--pullman); color: var(--cream-text); margin-top: 40px; }
.footer-inner {
  display: grid; gap: 28px;
  grid-template-columns: 1.4fr 1fr 1fr;
  padding-block: 36px;
  align-items: start;
}
.footer-brand { display: flex; gap: 14px; align-items: flex-start; font-size: 15px; }
.footer-mark { width: 48px; flex: none; }
.fm-ring { fill: none; stroke: var(--brass); stroke-width: 2.5; }
.fm-track rect { fill: var(--brass-soft); }
.fm-loco rect, .fm-loco circle { fill: var(--cream-text); }
.footer-fine { font-size: 13px; color: var(--brass-soft); }
.footer-fine a { color: var(--brass-soft); }

.footer-nav { display: flex; flex-direction: column; gap: 8px; }
.footer-nav a {
  color: var(--cream-text); text-decoration: none;
  font-family: var(--font-display); letter-spacing: 1.6px;
  text-transform: uppercase; font-size: 14px;
}
.footer-nav a:hover { color: var(--brass-soft); }

.footer-legal { font-size: 14px; }
.footer-legal .ticket-chip {
  display: inline-block; margin-bottom: 10px;
  border-color: var(--brass); color: var(--brass-soft); background: transparent;
}

@media (max-width: 760px) {
  .footer-inner { grid-template-columns: 1fr; }
}

/* ── Motion safety ─────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .sun-rays, .loco .siderod, .puffs circle { animation: none; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .btn:hover, .herald-card:hover, .dept-card:hover { transform: none; }
}