:root {
  color-scheme: only light;
  --ink: #172b3b;
  --cream: #fff7da;
  --yellow: #ffd447;
  --red: #e9553f;
  --teal: #137d78;
}

* { box-sizing: border-box; }

html, body { width: 100%; height: 100%; margin: 0; overflow: hidden; }

body {
  background: #122c3d;
  color: var(--ink);
  font-family: "Arial Narrow", "Roboto Condensed", Impact, system-ui, sans-serif;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
}

button, a { -webkit-tap-highlight-color: transparent; }

.app, .game-shell { width: 100%; height: 100%; }

.game-shell {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  background: #79cee2;
}

canvas {
  display: block;
  width: 100%;
  height: 100%;
  outline: none;
  cursor: crosshair;
}

.hud {
  position: absolute;
  z-index: 5;
  inset: 0 0 auto 0;
  display: flex;
  align-items: stretch;
  gap: 8px;
  padding: max(10px, env(safe-area-inset-top)) max(12px, env(safe-area-inset-right)) 0 max(12px, env(safe-area-inset-left));
  pointer-events: none;
  filter: drop-shadow(0 2px 0 rgba(255,255,255,.3));
}

.home-link, .icon-button, .hud-block {
  border: 2px solid rgba(23, 43, 59, .76);
  background: rgba(255, 247, 218, .88);
  box-shadow: 3px 3px 0 rgba(23, 43, 59, .22);
}

.home-link {
  display: grid;
  width: 45px;
  place-items: center;
  color: var(--ink);
  font-weight: 1000;
  text-decoration: none;
  pointer-events: auto;
}

.hud-block {
  min-width: 110px;
  padding: 7px 12px 6px;
}

.hud-block span, .shop small {
  display: block;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: .15em;
  opacity: .64;
}

.hud-block strong { font-size: 20px; letter-spacing: .03em; }
.hud-block.distance { margin-left: auto; text-align: right; }

.icon-button {
  color: var(--ink);
  font: 900 10px/1 system-ui, sans-serif;
  letter-spacing: .08em;
  padding: 0 12px;
  cursor: pointer;
  pointer-events: auto;
}

.message {
  position: absolute;
  z-index: 6;
  top: 18%;
  left: 50%;
  max-width: min(88vw, 620px);
  transform: translate(-50%, -10px) rotate(-1deg);
  color: #fff;
  font-size: clamp(17px, 2.5vw, 31px);
  font-weight: 1000;
  letter-spacing: .06em;
  text-align: center;
  text-shadow: 0 3px 0 var(--ink), 2px 0 0 var(--ink), -2px 0 0 var(--ink);
  opacity: 0;
  transition: opacity .16s, transform .16s;
  pointer-events: none;
}

.message.show { opacity: 1; transform: translate(-50%, 0) rotate(-1deg); }

.overlay {
  position: absolute;
  z-index: 10;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 70px 20px 24px;
  background: linear-gradient(90deg, rgba(13,43,58,.2), transparent 45%, rgba(13,43,58,.1));
  transition: opacity .2s;
}

.overlay.hidden { opacity: 0; pointer-events: none; }

.title-card {
  width: min(520px, 92vw);
  padding: clamp(20px, 4vw, 42px);
  border: 4px solid var(--ink);
  background: var(--cream);
  box-shadow: 12px 12px 0 rgba(23,43,59,.35);
  text-align: center;
  transform: rotate(-1deg);
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--teal);
  font-size: 12px;
  font-weight: 1000;
  letter-spacing: .24em;
}

h1 {
  margin: 0;
  color: var(--ink);
  font-size: clamp(58px, 10vw, 100px);
  line-height: .72;
  letter-spacing: -.055em;
}

h1 i { color: var(--red); font-style: normal; font-size: .77em; }

.overlay-copy {
  max-width: 390px;
  margin: 26px auto 22px;
  font: 700 clamp(14px, 2vw, 18px)/1.4 system-ui, sans-serif;
}

.start-button {
  width: 100%;
  border: 3px solid var(--ink);
  padding: 15px 20px 13px;
  background: var(--yellow);
  color: var(--ink);
  box-shadow: 5px 5px 0 var(--ink);
  font: 1000 20px/1 system-ui, sans-serif;
  letter-spacing: .08em;
  cursor: pointer;
}

.start-button:active { transform: translate(3px, 3px); box-shadow: 2px 2px 0 var(--ink); }

.controls { margin: 18px 0 0; font: 800 11px system-ui, sans-serif; letter-spacing: .1em; opacity: .58; }
kbd { border: 1px solid var(--ink); border-radius: 3px; padding: 3px 6px; background: #fff; }

.shop {
  position: absolute;
  z-index: 8;
  left: 50%;
  bottom: max(18px, env(safe-area-inset-bottom));
  width: min(680px, calc(100vw - 24px));
  padding: 14px;
  border: 3px solid var(--ink);
  background: rgba(255,247,218,.96);
  box-shadow: 7px 7px 0 rgba(23,43,59,.35);
  transform: translate(-50%, calc(100% + 40px));
  transition: transform .24s cubic-bezier(.2,.9,.3,1.15);
  pointer-events: none;
}

.shop.open { transform: translate(-50%, 0); pointer-events: auto; }
.shop-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; }
.shop-head strong { display: block; font-size: 17px; }
.shop-head b { font-size: 25px; }
.shop-actions { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 11px 0 8px; }

.shop-action {
  min-height: 53px;
  border: 2px solid var(--ink);
  background: #fff;
  color: var(--ink);
  padding: 7px 9px;
  font: 900 11px/1.25 system-ui, sans-serif;
  cursor: pointer;
}

.shop-action span { display: block; margin-top: 3px; color: var(--teal); font-size: 13px; }
.shop-action.owned { background: #c4ead7; }
.shop-action:disabled { cursor: default; opacity: .48; }
.shop-action:not(:disabled):active { background: var(--yellow); transform: translateY(2px); }
.shop > p { margin: 0; font: 800 10px system-ui, sans-serif; letter-spacing: .08em; text-align: center; opacity: .6; }

.rotate-hint {
  display: none;
  position: absolute;
  z-index: 20;
  right: 12px;
  bottom: 10px;
  border: 1px solid rgba(23,43,59,.55);
  padding: 6px 8px;
  background: rgba(255,247,218,.8);
  font: 900 9px system-ui, sans-serif;
  letter-spacing: .1em;
  pointer-events: none;
}

@media (orientation: portrait) and (max-width: 720px) {
  .rotate-hint { display: block; }
  .hud { gap: 4px; }
  .home-link { width: 36px; }
  .hud-block { min-width: 0; padding: 6px 7px; }
  .hud-block span { font-size: 8px; }
  .hud-block strong { font-size: 15px; }
  .icon-button { padding: 0 7px; font-size: 8px; }
  .shop-actions { grid-template-columns: 1fr; }
  .shop { padding: 10px; }
  .shop-action { min-height: 42px; }
}

@media (max-height: 520px) {
  .title-card { padding: 16px 28px; width: min(650px, 85vw); }
  h1 { font-size: 58px; }
  .overlay-copy { margin: 15px auto; }
  .controls { display: none; }
  .shop { bottom: 8px; }
  .shop-actions { margin: 7px 0 5px; }
}