:root {
  --ink: #f3e6cf;
  --ink-soft: #c9b89a;
  --ink-dim: #8e8270;
  --ember: #ffb35c;
  --ember-deep: #e2702f;
  --frost: #9cc7e8;
  --night: #070a14;
  --panel: rgba(14, 16, 26, 0.86);
  --edge: rgba(255, 196, 120, 0.22);
  --display: "Cormorant Garamond", Georgia, serif;
  --body: "Inter", system-ui, sans-serif;
}

* { box-sizing: border-box; }
html, body {
  margin: 0;
  height: 100%;
  overflow: hidden;
  background: var(--night);
  color: var(--ink);
  font-family: var(--body);
  -webkit-user-select: none;
  user-select: none;
  touch-action: none;
}
canvas#game { position: fixed; inset: 0; width: 100%; height: 100%; display: block; cursor: crosshair; }
[hidden] { display: none !important; }

/* ── HUD ─────────────────────────────────────────── */
#hud {
  position: fixed;
  inset: 0 0 auto 0;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: start;
  gap: 16px;
  padding: max(14px, env(safe-area-inset-top)) max(18px, env(safe-area-inset-right)) 0 max(18px, env(safe-area-inset-left));
  pointer-events: none;
  font-size: 13px;
}
.hud-left { display: grid; gap: 8px; }
.meter { display: grid; grid-template-columns: 62px 160px; align-items: center; gap: 10px; }
.meter-label { color: var(--ink-soft); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; }
.meter-track { height: 8px; border-radius: 6px; background: rgba(255, 255, 255, 0.08); overflow: hidden; box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.06); }
.meter-track i { display: block; height: 100%; width: 100%; border-radius: 6px; transition: width 0.2s linear; }
#fuel-bar { background: linear-gradient(90deg, var(--ember-deep), var(--ember)); box-shadow: 0 0 12px rgba(255, 160, 80, 0.6); }
#warmth-bar { background: linear-gradient(90deg, #d86b6b, #f4b07a); }
.meter.low .meter-track i { animation: pulse 0.9s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: 0.45; } }

.hud-clock { text-align: center; }
#clock { font-family: var(--display); font-size: 34px; font-weight: 600; letter-spacing: 0.04em; text-shadow: 0 0 18px rgba(255, 170, 90, 0.35); }
.hud-clock small { display: block; color: var(--ink-dim); font-size: 11px; letter-spacing: 0.08em; margin-top: -2px; }

.hud-right { display: flex; justify-content: flex-end; align-items: center; gap: 14px; }
.stat { color: var(--ink-soft); font-size: 12px; letter-spacing: 0.06em; }
.stat b { color: var(--ink); font-size: 15px; font-weight: 600; margin-left: 3px; }
.icon-btn {
  pointer-events: auto;
  width: 34px; height: 34px;
  border-radius: 50%;
  border: 1px solid var(--edge);
  background: rgba(10, 12, 20, 0.6);
  color: var(--ink);
  font-size: 13px;
  cursor: pointer;
}
.icon-btn:hover { border-color: var(--ember); }
.icon-btn[aria-pressed="true"] { opacity: 0.5; }

#hint {
  position: fixed;
  left: 50%;
  bottom: max(28px, env(safe-area-inset-bottom));
  transform: translateX(-50%);
  padding: 9px 16px;
  border-radius: 20px;
  background: rgba(10, 12, 20, 0.7);
  border: 1px solid var(--edge);
  color: var(--ink);
  font-size: 13px;
  pointer-events: none;
  transition: opacity 0.4s;
}

/* ── touch ───────────────────────────────────────── */
#stick {
  position: fixed;
  left: max(28px, env(safe-area-inset-left));
  bottom: max(28px, env(safe-area-inset-bottom));
  width: 120px; height: 120px;
  border-radius: 50%;
  border: 1px solid var(--edge);
  background: rgba(255, 255, 255, 0.04);
}
#stick-knob { position: absolute; left: 50%; top: 50%; width: 46px; height: 46px; margin: -23px 0 0 -23px; border-radius: 50%; background: rgba(255, 190, 120, 0.35); }
#btn-lantern {
  position: fixed;
  right: max(28px, env(safe-area-inset-right));
  bottom: max(36px, env(safe-area-inset-bottom));
  width: 92px; height: 92px;
  border-radius: 50%;
  border: 1px solid var(--edge);
  background: rgba(30, 22, 14, 0.75);
  color: var(--ink);
  font: 600 13px var(--body);
}
#btn-lantern small { display: block; color: var(--ink-dim); font-size: 10px; font-weight: 500; }

/* ── screens ─────────────────────────────────────── */
.screen {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background: radial-gradient(70% 60% at 50% 45%, rgba(40, 24, 10, 0.25), rgba(4, 6, 12, 0.72));
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.45s ease;
}
.screen.show { opacity: 1; pointer-events: auto; }
.card {
  width: min(520px, 100%);
  padding: 34px 34px 28px;
  border-radius: 18px;
  background: var(--panel);
  border: 1px solid var(--edge);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.55), 0 0 60px rgba(255, 140, 60, 0.08);
  text-align: center;
  backdrop-filter: blur(6px);
}
.card.small { width: min(380px, 100%); }
.eyebrow { margin: 0; color: var(--ember); font-size: 11px; letter-spacing: 0.22em; text-transform: uppercase; }
h1, h2 { font-family: var(--display); font-weight: 700; margin: 6px 0 8px; letter-spacing: 0.01em; }
h1 { font-size: 64px; line-height: 1; text-shadow: 0 0 30px rgba(255, 160, 80, 0.4); }
h2 { font-size: 40px; line-height: 1.05; }
.lede { margin: 0 auto 18px; max-width: 38ch; color: var(--ink-soft); font-size: 15px; line-height: 1.6; }
.how { list-style: none; margin: 0 0 16px; padding: 0; display: grid; gap: 8px; text-align: left; }
.how li { display: grid; grid-template-columns: 130px 1fr; gap: 12px; padding: 9px 12px; border-radius: 10px; background: rgba(255, 255, 255, 0.035); font-size: 13px; }
.how b { color: var(--ink); font-weight: 600; }
.how span { color: var(--ink-soft); }
.rule { margin: 0 0 20px; color: var(--frost); font-size: 13px; }
button.primary, button.ghost {
  font: 600 15px var(--body);
  border-radius: 12px;
  padding: 13px 26px;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
button.primary {
  border: 0;
  color: #1b0f05;
  background: linear-gradient(180deg, #ffc879, #f08a3c);
  box-shadow: 0 8px 26px rgba(240, 130, 60, 0.35);
}
button.primary:hover { transform: translateY(-1px); box-shadow: 0 10px 30px rgba(240, 130, 60, 0.5); }
button.ghost { display: block; margin: 12px auto 0; border: 1px solid var(--edge); background: transparent; color: var(--ink-soft); }
button:focus-visible { outline: 2px solid var(--ember); outline-offset: 3px; }
.best { margin: 14px 0 0; color: var(--ink-dim); font-size: 12px; min-height: 1em; }
.end-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 0 0 22px; }
.end-stats div { padding: 12px 8px; border-radius: 10px; background: rgba(255, 255, 255, 0.04); }
.end-stats dt { color: var(--ink-dim); font-size: 11px; letter-spacing: 0.06em; }
.end-stats dd { margin: 4px 0 0; font-family: var(--display); font-size: 26px; font-weight: 700; }

.made { margin: 18px 0 0; color: var(--ink-soft); font-size: 12px; letter-spacing: 0.04em; }
.credit { margin: 4px 0 0; color: var(--ink-dim); font-size: 11px; }

/* ── settings ────────────────────────────────────────── */
.settings {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: 8px 18px;
  margin: 16px 0 0;
  padding: 12px 14px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.035);
  font-size: 12px;
  color: var(--ink-soft);
}
.settings label { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; }
.settings label span { letter-spacing: 0.06em; text-transform: uppercase; font-size: 11px; }
.settings input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 96px;
  height: 20px;
  margin: 0;
  background: transparent;
  cursor: pointer;
}
.settings input[type="range"]::-webkit-slider-runnable-track { height: 4px; border-radius: 4px; background: rgba(255, 255, 255, 0.12); }
.settings input[type="range"]::-moz-range-track { height: 4px; border-radius: 4px; background: rgba(255, 255, 255, 0.12); }
.settings input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 14px; height: 14px; margin-top: -5px;
  border-radius: 50%;
  border: 0;
  background: var(--ember);
  box-shadow: 0 0 10px rgba(255, 179, 92, 0.6);
}
.settings input[type="range"]::-moz-range-thumb { width: 14px; height: 14px; border: 0; border-radius: 50%; background: var(--ember); box-shadow: 0 0 10px rgba(255, 179, 92, 0.6); }
.settings input[type="range"]:focus-visible { outline: 2px solid var(--ember); outline-offset: 2px; border-radius: 10px; }
.settings input[type="checkbox"] { accent-color: var(--ember); width: 15px; height: 15px; margin: 0; cursor: pointer; }
.settings input[type="checkbox"]:focus-visible { outline: 2px solid var(--ember); outline-offset: 2px; }
.settings .check span { text-transform: none; letter-spacing: 0; font-size: 12px; }

@media (max-width: 640px) {
  #hud { grid-template-columns: 1fr auto; font-size: 12px; gap: 10px; }
  .hud-right { grid-column: 1 / -1; justify-content: flex-start; gap: 12px; }
  .meter { grid-template-columns: 54px 110px; }
  #clock { font-size: 26px; }
  h1 { font-size: 48px; }
  .card { padding: 26px 20px 22px; }
  .how li { grid-template-columns: 1fr; gap: 2px; }
  .end-stats dd { font-size: 22px; }
  .settings { gap: 8px 12px; }
  .settings input[type="range"] { width: 80px; }
}
@media (max-height: 700px) {
  .card { padding: 22px 24px 18px; }
  h1 { font-size: 50px; }
  .how { gap: 5px; }
  .how li { padding: 6px 10px; }
  .lede { margin-bottom: 12px; }
  .settings { margin-top: 10px; padding: 8px 12px; }
}
.screen { overflow-y: auto; }
body.touch #hint { bottom: calc(max(28px, env(safe-area-inset-bottom)) + 150px); max-width: calc(100% - 32px); text-align: center; }
@media (prefers-reduced-motion: reduce) {
  .screen, .meter-track i, button.primary, button.ghost { transition: none; }
  .meter.low .meter-track i { animation: none; }
  button.primary:hover { transform: none; }
}
.reduce-motion .screen, .reduce-motion .meter-track i, .reduce-motion button.primary, .reduce-motion button.ghost { transition: none; }
.reduce-motion .meter.low .meter-track i { animation: none; }
.reduce-motion button.primary:hover { transform: none; }