/* Switchyard — full-bleed canvas model railway. Self-contained. */

@import url("https://fonts.googleapis.com/css2?family=Alfa+Slab+One&family=Geist:wght@400;500;600&family=Geist+Mono:wght@400;500;600&display=swap");

:root{
  --ink: #f5ecdc;
  --dim: rgba(245, 236, 220, 0.62);
  --faint: rgba(245, 236, 220, 0.34);
  --bg: #0b0907;
  --brass: #f2b840;
  --red: #ff5446;
  --line: rgba(255, 220, 160, 0.16);
  --font-display: "Alfa Slab One", Georgia, "Times New Roman", serif;
  --font-mono: "Geist Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  /* shared toy chrome (assets/toy-chrome.css): the work lamp's brass, titles in a box-art slab */
  --tc-accent: #f2b840;
  --tc-on: #2a1903;
  --tc-display: var(--font-display);
  --tc-ground: #0b0907;
}

*, *::before, *::after{ box-sizing: border-box; }
html, body{
  height: 100%; margin: 0; overflow: hidden;
  background: var(--bg); color: var(--ink);
  font-family: "Geist", system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  touch-action: none;
}
canvas{
  display: block; width: 100%; height: 100%; touch-action: none;
  -webkit-touch-callout: none; user-select: none; -webkit-user-select: none;
}

/* ---------- HUD ---------- */
.hud{
  position: fixed; z-index: 5; pointer-events: none;
  top: max(12px, env(safe-area-inset-top)); left: 50%; transform: translateX(-50%);
  display: flex; gap: 24px; align-items: flex-end;
  font-family: var(--font-mono);
  padding: 7px 18px;
  border: 1px solid var(--line); border-radius: 12px;
  background: rgba(14, 10, 6, 0.66);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
}
.hud[hidden]{ display: none; }
.hud__cell{ display: flex; flex-direction: column; align-items: center; gap: 2px; }
.hud__k{ font-size: 8px; letter-spacing: 0.18em; text-transform: uppercase; color: var(--faint); }
.hud__cell > span:last-child{ font-size: 18px; font-weight: 600; font-variant-numeric: tabular-nums; min-height: 22px; display: flex; align-items: center; }
#home{ color: var(--brass); }
.lamps{ gap: 6px; }
.lamps i{
  display: block; width: 11px; height: 11px; border-radius: 50%;
  background: rgba(255, 220, 160, 0.16); border: 1px solid rgba(255, 220, 160, 0.28);
}
.lamps i.on{ background: var(--red); border-color: #ffb0a6; box-shadow: 0 0 10px rgba(255, 84, 70, 0.8); }
.hud.is-bump #home{ animation: bump 260ms ease-out; }
.hud.is-miss .lamps{ animation: shake 320ms ease-out; }
@keyframes bump{ 0%{ transform: scale(1); } 40%{ transform: scale(1.32); } 100%{ transform: scale(1); } }
@keyframes shake{ 0%,100%{ transform: translateX(0); } 25%{ transform: translateX(-4px); } 60%{ transform: translateX(3px); } }

/* ---------- Buttons ---------- */
.sound-btn{
  position: fixed; z-index: 6;
  top: max(12px, env(safe-area-inset-top)); right: max(12px, env(safe-area-inset-right));
  width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid var(--line); background: rgba(14, 10, 6, 0.66); color: var(--ink);
  font-size: 15px; cursor: pointer; backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px);
  transition: transform 140ms ease, border-color 140ms ease, opacity 140ms ease;
}
.sound-btn:hover{ transform: translateY(-1px); border-color: var(--brass); }
.sound-btn[aria-pressed="false"]{ opacity: 0.45; }
.sound-btn:focus-visible{ outline: none; box-shadow: 0 0 0 3px rgba(242, 184, 64, 0.45); }

/* ---------- Overlay ---------- */
.overlay{
  position: fixed; inset: 0; z-index: 10;
  display: flex; align-items: center; justify-content: center;
  padding: 22px; overflow-y: auto;
  background: radial-gradient(90% 70% at 50% 42%, rgba(12, 8, 4, 0.5), rgba(3, 2, 1, 0.88));
  transition: opacity 240ms ease;
}
.overlay[hidden]{ display: none; }
.overlay.is-out{ opacity: 0; pointer-events: none; }
.panel{
  max-width: 480px; text-align: center; margin: auto;
  padding: clamp(22px, 5vw, 34px);
  border: 1px solid var(--line); border-radius: 16px;
  background: rgba(16, 11, 7, 0.86);
  box-shadow: 0 30px 90px -20px rgba(0,0,0,0.85);
}
.panel__eyebrow{ margin: 0 0 6px; font-family: var(--font-mono); font-size: 0.66rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--brass); }
.panel__title{ margin: 0 0 12px; font-family: var(--font-display); font-size: clamp(1.9rem, 7.4vw, 2.8rem); font-weight: 400; letter-spacing: 0; }
.panel__text{ margin: 0 0 20px; font-size: 0.86rem; line-height: 1.65; color: var(--dim); }
.panel__text b{ color: var(--ink); font-weight: 600; }
.play-btn{
  appearance: none; font-weight: 700; font-size: 1rem;
  padding: 13px 30px; border-radius: 999px; cursor: pointer; border: 0;
  background: var(--brass); color: #2a1903;
  transition: transform 160ms ease;
}
.play-btn:hover{ transform: translateY(-2px); }
.panel__keys{ margin: 16px 0 0; font-family: var(--font-mono); font-size: 0.64rem; letter-spacing: 0.06em; color: var(--faint); }
@media (hover: none), (pointer: coarse){ .panel__keys{ display: none; } }

/* ---------- Frame corners ---------- */
.frame{ position: fixed; inset: 0; z-index: 4; pointer-events: none; }
.frame__corner{
  position: fixed; font-family: var(--font-mono); font-size: 0.6rem;
  letter-spacing: 0.2em; text-transform: uppercase; color: var(--faint);
}
.frame__corner--tl{ top: max(14px, env(safe-area-inset-top)); left: max(14px, env(safe-area-inset-left)); }
.frame__corner--tr{ top: max(14px, env(safe-area-inset-top)); right: max(58px, calc(env(safe-area-inset-right) + 58px)); }
.frame__corner--bl{ bottom: max(14px, env(safe-area-inset-bottom)); left: max(14px, env(safe-area-inset-left)); pointer-events: auto; }
.frame__corner--bl a{ color: var(--faint); text-decoration: none; }
.frame__corner--bl a:hover{ color: var(--brass); }

@media (max-width: 620px){
  .frame__corner--tr{ display: none; }
  .hud{ gap: 16px; padding: 6px 12px; }
  .hud__k{ font-size: 7px; letter-spacing: 0.12em; }
  .hud__cell > span:last-child{ font-size: 15px; min-height: 19px; }
  .lamps i{ width: 10px; height: 10px; }
}
@media (max-height: 620px){
  .hud{ top: max(6px, env(safe-area-inset-top)); padding: 4px 11px; }
}
@media (prefers-reduced-motion: reduce){
  .play-btn, .sound-btn, .overlay{ transition: none; }
  .hud.is-bump #home, .hud.is-miss .lamps{ animation: none; }
}

/* The tip-jar and fullscreen badges dock at right-centre by default, which is on the track. Stack them
   top-right under the sound button instead (the layout keeps that column clear). Doubled classes
   out-specify the components' own injected styles. */
.opt-tipjar.opt-tipjar{ top: calc(max(12px, env(safe-area-inset-top)) + 48px); bottom: auto; transform: none; }
.opt-fs.opt-fs{ top: calc(max(12px, env(safe-area-inset-top)) + 100px); bottom: auto; transform: none; }
.opt-tipjar.opt-tipjar.tj-nudge{ animation: none; }