:root {
  --accent: #ff7a2a;
  --accent-hot: #ffc24a;
  --cyan: #52e6ff;
  --text: #fff4ea;
  --muted: rgba(255, 238, 222, 0.64);
  --glass: rgba(18, 8, 6, 0.55);
  --glass-border: rgba(255, 150, 90, 0.24);
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
}
* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0; width: 100%; height: 100%; overflow: hidden;
  background: #1a0703; color: var(--text); font-family: var(--font-body);
  -webkit-font-smoothing: antialiased; -webkit-tap-highlight-color: transparent;
  user-select: none; -webkit-user-select: none; touch-action: none; overscroll-behavior: none;
}
#c { position: fixed; inset: 0; width: 100%; height: 100%; display: block; }
#flash { position: fixed; inset: 0; pointer-events: none; background: #fff; opacity: 0; mix-blend-mode: screen; }
.hidden { display: none !important; }

/* HUD */
#hud {
  position: fixed; top: 0; left: 0; right: 0;
  padding: max(20px, env(safe-area-inset-top)) 28px 0;
  display: flex; justify-content: space-between; align-items: flex-start;
  pointer-events: none; text-shadow: 0 2px 14px rgba(0,0,0,0.7);
}
.hud-left, .hud-right { flex: 1; } .hud-center { text-align: center; } .hud-right { text-align: right; }
.label { font: 600 11px/1 var(--font-body); letter-spacing: 0.2em; color: var(--muted); }
.big { font: 700 42px/1.05 var(--font-display); color: var(--text); margin-top: 6px; font-variant-numeric: tabular-nums; }
#timer.urgent { color: #ff5a3a; animation: throb 500ms ease-in-out infinite alternate; }
@keyframes throb { to { transform: scale(1.1); } }
.combo {
  display: inline-block; margin-top: 8px; padding: 5px 11px; border-radius: 999px;
  font: 700 14px/1 var(--font-display); color: #04161c; background: var(--cyan);
  box-shadow: 0 0 18px rgba(82, 230, 255, 0.55); transform-origin: left center;
}
.combo.hot { background: linear-gradient(135deg, var(--accent-hot), var(--accent)); color: #1c0800; box-shadow: 0 0 22px rgba(255,140,40,0.7); }
.combo.pop { animation: pop 220ms cubic-bezier(0.2, 1.6, 0.4, 1); }
@keyframes pop { 0% { transform: scale(1); } 40% { transform: scale(1.45); } 100% { transform: scale(1); } }
.hearts { display: flex; gap: 7px; justify-content: flex-end; margin-top: 10px; }
.hearts span {
  width: 28px; height: 12px; border-radius: 999px;
  background: linear-gradient(90deg, var(--cyan), #9ff4ff);
  box-shadow: 0 0 14px rgba(82, 230, 255, 0.7); transition: all 220ms ease;
}
.hearts span.lost { background: rgba(255,255,255,0.12); box-shadow: none; transform: scaleX(0.7); }
.hud-btns { margin-top: 12px; pointer-events: auto; display: flex; justify-content: flex-end; }
.icon-btn {
  appearance: none; border: 1px solid var(--glass-border); background: var(--glass); color: var(--text);
  width: 40px; height: 40px; border-radius: 12px; font: 700 14px/1 var(--font-display); cursor: pointer;
  backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px);
}
.icon-btn.mute { position: fixed; bottom: max(14px, env(safe-area-inset-bottom)); left: 14px; z-index: 5; font-size: 18px; }
.icon-btn.off { opacity: 0.45; text-decoration: line-through; }

/* popups + banner */
#popups { position: fixed; inset: 0; pointer-events: none; overflow: hidden; }
.popup {
  position: absolute; transform: translate(-50%, -50%);
  font: 700 26px/1 var(--font-display); color: var(--text); text-shadow: 0 2px 12px rgba(0,0,0,0.7);
  animation: rise 850ms cubic-bezier(0.2, 0.8, 0.2, 1) forwards; white-space: nowrap;
}
.popup.cyan { color: #8ff3ff; text-shadow: 0 0 18px rgba(82,230,255,0.8), 0 2px 8px rgba(0,0,0,0.6); }
.popup.hot { color: var(--accent-hot); text-shadow: 0 0 18px rgba(255,150,40,0.9), 0 2px 8px rgba(0,0,0,0.6); font-size: 30px; }
.popup.gold { color: #ffe07a; font-size: 20px; letter-spacing: 0.08em; }
.popup.bad { color: #ff5a3a; font-size: 30px; letter-spacing: 0.06em; }
@keyframes rise {
  0% { opacity: 0; transform: translate(-50%, -30%) scale(0.6); }
  15% { opacity: 1; transform: translate(-50%, -50%) scale(1.25); }
  100% { opacity: 0; transform: translate(-50%, -170%) scale(1); }
}
#banner { position: fixed; left: 0; right: 0; top: 28%; text-align: center; pointer-events: none; opacity: 0; }
#banner.show { animation: banner 1700ms cubic-bezier(0.2, 0.9, 0.2, 1) forwards; }
.b-main {
  font: 700 clamp(48px, 9vw, 110px)/1 var(--font-display); letter-spacing: 0.06em;
  background: linear-gradient(180deg, #fff6d0 10%, var(--accent-hot) 45%, var(--accent) 75%, #b3240a);
  -webkit-background-clip: text; background-clip: text; color: transparent;
  filter: drop-shadow(0 0 28px rgba(255, 110, 30, 0.75)) drop-shadow(0 4px 10px rgba(0,0,0,0.6));
}
.b-sub { margin-top: 10px; font: 600 14px/1 var(--font-body); letter-spacing: 0.3em; color: var(--text); text-transform: uppercase; text-shadow: 0 2px 10px rgba(0,0,0,0.8); }
@keyframes banner {
  0% { opacity: 0; transform: scale(1.6); letter-spacing: 0.3em; }
  12% { opacity: 1; transform: scale(1); }
  75% { opacity: 1; transform: scale(1.04); }
  100% { opacity: 0; transform: scale(1.08) translateY(-20px); }
}

/* touch controls */
#touch { position: fixed; inset: auto 0 0 0; padding: 0 18px max(18px, env(safe-area-inset-bottom)); display: flex; justify-content: space-between; align-items: flex-end; pointer-events: none; z-index: 4; }
.t-steer { display: flex; gap: 12px; }
.t-btn {
  pointer-events: auto; appearance: none; touch-action: none;
  width: 82px; height: 82px; border-radius: 24px; border: 1px solid rgba(255,180,120,0.3);
  background: rgba(20, 8, 6, 0.42); color: var(--text); font: 700 24px/1 var(--font-display);
  backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); transition: transform 80ms ease, background 80ms ease;
}
.t-btn.jump { width: 108px; height: 108px; border-radius: 999px; font-size: 18px; letter-spacing: 0.1em; background: rgba(255, 110, 30, 0.32); border-color: rgba(255, 190, 120, 0.5); }
.t-btn.down { transform: scale(0.92); background: rgba(82, 230, 255, 0.35); }

/* screens */
.screen {
  position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; padding: 16px;
  background: radial-gradient(ellipse at 50% 40%, rgba(20, 6, 2, 0) 30%, rgba(10, 3, 1, 0.55) 100%); z-index: 6;
}
#menu { align-items: flex-end; padding-bottom: 7vh; }
.card {
  width: min(540px, 100%); padding: 34px 36px 26px; text-align: center;
  background: var(--glass); border: 1px solid var(--glass-border); border-radius: 26px;
  backdrop-filter: blur(16px) saturate(140%); -webkit-backdrop-filter: blur(16px) saturate(140%);
  box-shadow: 0 30px 80px rgba(0,0,0,0.5), 0 0 60px rgba(255, 90, 20, 0.12), inset 0 1px 0 rgba(255,255,255,0.1);
  animation: cardIn 560ms cubic-bezier(0.2, 0.9, 0.2, 1.1) both;
}
.card.small { width: min(420px, 100%); }
@keyframes cardIn { from { opacity: 0; transform: translateY(26px) scale(0.96); } to { opacity: 1; transform: none; } }
.eyebrow { font: 600 11px/1 var(--font-body); letter-spacing: 0.3em; color: var(--accent); }
h1 { margin: 14px 0 10px; font: 700 58px/1 var(--font-display); letter-spacing: -0.02em; }
h1 span { background: linear-gradient(180deg, var(--accent-hot), var(--accent) 70%); -webkit-background-clip: text; background-clip: text; color: transparent; }
.card p { margin: 0 auto 20px; max-width: 400px; color: var(--muted); font-size: 15px; line-height: 1.55; }
.keys { display: flex; gap: 18px; justify-content: center; margin-bottom: 24px; color: var(--muted); font-size: 13px; flex-wrap: wrap; }
.keys b { color: var(--text); background: rgba(255,255,255,0.1); padding: 2px 7px; border-radius: 6px; font-weight: 600; }
.keys.mob { display: none; }
body.is-touch .keys.desk { display: none; } body.is-touch .keys.mob { display: flex; }
.btn {
  appearance: none; border: 0; cursor: pointer; padding: 17px 44px; border-radius: 999px;
  font: 700 18px/1 var(--font-display); color: #200900; letter-spacing: 0.02em;
  background: linear-gradient(135deg, #ffe08a, var(--accent-hot) 35%, var(--accent) 75%, #ff4a1a);
  box-shadow: 0 12px 34px rgba(255, 100, 30, 0.45), inset 0 1px 0 rgba(255,255,255,0.5);
  transition: transform 120ms ease, box-shadow 120ms ease;
}
.btn:hover { transform: translateY(-2px) scale(1.03); box-shadow: 0 16px 44px rgba(255, 100, 30, 0.65); }
.btn:active { transform: translateY(1px) scale(0.98); }
.best { margin-top: 14px; font-size: 13px; color: var(--muted); letter-spacing: 0.08em; }
.loading { position: absolute; bottom: 20px; font-size: 13px; color: var(--muted); letter-spacing: 0.12em; }
.stats { display: flex; gap: 26px; justify-content: center; margin: 18px 0 6px; }
.stats .big { font-size: 34px; }
.bonus { color: var(--accent-hot); font: 600 13px/1 var(--font-body); letter-spacing: 0.12em; margin: 6px 0 12px; }
.newbest {
  display: table; margin: 2px auto 14px; padding: 6px 14px; border-radius: 999px;
  font: 700 12px/1 var(--font-display); letter-spacing: 0.2em; color: #04161c; background: var(--cyan);
  animation: pulse 900ms ease-in-out infinite alternate;
}
@keyframes pulse { from { transform: scale(1); } to { transform: scale(1.08); } }
.fps { position: fixed; bottom: 10px; right: 12px; font: 500 11px/1 var(--font-body); color: rgba(255,255,255,0.3); pointer-events: none; }
body.is-touch .fps { display: none; }

@media (max-width: 640px), (max-height: 520px) {
  h1 { font-size: 42px; }
  .big { font-size: 30px; }
  #hud { padding-left: 16px; padding-right: 16px; }
  .card { padding: 26px 22px 20px; }
  .card p { font-size: 14px; }
  .stats { gap: 16px; } .stats .big { font-size: 26px; }
}
@media (max-height: 520px) { #menu { align-items: center; padding-bottom: 16px; } .card p { display: none; } }
body.is-touch .icon-btn.mute { top: calc(max(20px, env(safe-area-inset-top)) + 100px); right: 16px; left: auto; bottom: auto; }