* { box-sizing: border-box; }
html, body { margin: 0; width: 100%; height: 100%; overflow: hidden; background: #172b35; }
body { font-family: system-ui, sans-serif; overscroll-behavior: none; }
:root { --safe-left: env(safe-area-inset-left, 0px); --safe-right: env(safe-area-inset-right, 0px); --safe-bottom: env(safe-area-inset-bottom, 0px); }
body { position: fixed; inset: 0; width: var(--viewport-width, 100vw); height: var(--viewport-height, 100dvh); -webkit-user-select: none; user-select: none; -webkit-touch-callout: none; }
#game { width: 100%; height: 100%; touch-action: none; }
canvas { display: block; }
[hidden] { display: none !important; }
#menu { position: fixed; inset: 0; z-index: 20; display: grid; place-items: center; padding: 14px; background: #112c37bb; overflow: auto; }
.menu-card { width: min(460px, 94vw); padding: 28px 36px; border: 1px solid #ffffff25; border-radius: 24px; background: #203b42f5; color: #fff5da; text-align: center; box-shadow: 0 24px 80px #102d3755; }
.eyebrow { margin: 0 0 10px; color: #a9dcd7; font-size: 11px; letter-spacing: 3px; }
#menu-title { margin: 0; font-size: clamp(30px, 6vw, 52px); letter-spacing: -2px; line-height: 1; }
#menu-title span { color: #ffda7c; }
.menu-intro { margin: 10px 0 20px; color: #c6ddda; }
.record { display: grid; gap: 4px; margin-bottom: 20px; padding: 16px; border-radius: 14px; background: #ffffff08; }
.record span { color: #ffda7c; font-size: 12px; letter-spacing: 2px; }
.record strong { font-size: 36px; font-variant-numeric: tabular-nums; }
.record small, .scoring { color: #b8d1ce; font-size: 11px; }
#menu button { display: block; width: 100%; min-height: 44px; border: 0; border-radius: 10px; font: bold 17px system-ui; cursor: pointer; }
#play-button { background: #ffda7c; color: #203b42; }
#menu #menu-fullscreen { margin-top: 8px; background: transparent; color: #c6ddda; font-size: 13px; }
#menu button:focus-visible { outline: 3px solid #fff5da; outline-offset: 3px; }
#play-button:hover { background: #ffe7a9; }
.menu-help { font-size: 12px; line-height: 1.7; color: #c6ddda; margin: 12px 0; }
.scoring { margin: 0; }
.home-link { display: inline-block; margin-top: 12px; color: #a9dcd7; font-size: 13px; }
@media (max-height: 550px) and (orientation: landscape) {
  .menu-card { width: min(580px, 95vw); padding: 16px 24px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 24px; align-items: center; }
  .eyebrow, #menu-title, .menu-intro, .record { grid-column: 1; margin: 0; }
  .record { grid-row: 4 / 7; padding: 10px; }
  #play-button { grid-column: 2; grid-row: 2; }
  #menu #menu-fullscreen { grid-column: 2; grid-row: 3; margin: 0; }
  .menu-help { grid-column: 2; grid-row: 4; margin: 0; }
  .scoring { grid-column: 2; grid-row: 5; }
  .home-link { grid-column: 2; grid-row: 6; margin: 0; }
}
#rotate { display: none; z-index: 30; position: fixed; inset: 0; background: #172b35; color: #fff5da; align-items: center; justify-content: center; flex-direction: column; text-align: center; padding: 24px; }
#rotate span { font-size: 80px; color: #ffd36a; }
#rotate h1 { font-size: 25px; }
#rotate p { color: #bdd5d6; }
@media (orientation: portrait) and (max-width: 900px) and (pointer: coarse) { #rotate { display: flex; } }

#menu { padding: max(12px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(12px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left)); }
@media (pointer: coarse) {
  .menu-help { font-size: 0; }
  .menu-help::after { content: 'Hold ‹ › to move · Tap JUMP to jump'; font-size: 12px; }
}
@media (display-mode: standalone) { #menu-fullscreen { display: none !important; } }