:root {
  --bg: #08001a;
  --bg2: #10052b;
  --fg: #e9f8ff;
  --hot: #ff2bd6;
  --cool: #00f0ff;
  --toxic: #7cff4d;
  --danger: #ff3355;
  --coin: #ffd24a;
  --ui: 'Courier New', ui-monospace, monospace;
}

* { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  width: 100%;
  /* Fallback first, then the dynamic variant that tracks mobile browser
     chrome (iOS address bar show/hide, etc.). Browsers that support dvh
     use the second declaration; older ones fall back to vh. */
  height: 100vh;
  height: 100dvh;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--ui);
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
  -webkit-user-select: none;
  user-select: none;
}

#app {
  /* Explicitly top+left anchored with a fixed height — NOT `inset: 0`.
     With inset: 0 the element is anchored to all four edges of the
     layout viewport, which on iOS includes the under-chrome area; that
     overrides our height and the menu/touch controls end up hidden
     under the address bar. Anchoring only to top/left and sizing with
     100dvh (dynamic viewport height) keeps the whole UI inside the
     currently-visible area and re-flows cleanly when the browser
     chrome shows/hides. */
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  height: 100dvh;
  display: block;
}

#game {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  image-rendering: pixelated;
  background:
    radial-gradient(ellipse at 20% 10%, rgba(255,43,214,0.18), transparent 60%),
    radial-gradient(ellipse at 80% 90%, rgba(0,240,255,0.18), transparent 60%),
    linear-gradient(180deg, #08001a 0%, #10052b 60%, #1a0840 100%);
}

/* HUD */
#hud {
  position: absolute;
  top: env(safe-area-inset-top, 12px);
  left: 0; right: 0;
  display: flex; justify-content: space-between;
  padding: 14px 18px;
  font-size: clamp(14px, 2.6vw, 22px);
  letter-spacing: 2px;
  text-shadow: 0 0 8px var(--cool), 0 0 2px #000;
  pointer-events: none;
  z-index: 3;
}
.hudL, .hudR {
  display: flex; flex-direction: column; gap: 4px;
}
.hudR { align-items: flex-end; }
#score { color: var(--toxic); }
#best  { color: var(--hot); }
#levelHud {
  color: var(--cool);
  font-size: 0.75em;
  letter-spacing: 3px;
  text-shadow: 0 0 6px var(--cool);
}
#coinHud {
  color: var(--coin);
  font-size: 0.85em;
  letter-spacing: 2px;
  text-shadow: 0 0 8px var(--coin), 0 0 2px #000;
}

.pauseBtn {
  pointer-events: auto;
  appearance: none;
  width: 40px; height: 40px;
  margin-bottom: 4px;
  border: 2px solid var(--fg);
  background: rgba(8,0,26,0.55);
  color: var(--fg);
  font-family: var(--ui);
  font-size: 16px;
  font-weight: bold;
  letter-spacing: 3px;
  padding: 0 0 0 3px;
  cursor: pointer;
  box-shadow: 0 0 10px rgba(0,240,255,0.3), inset 0 0 6px rgba(0,240,255,0.15);
  text-shadow: 0 0 6px var(--cool);
  display: none;
  align-items: center;
  justify-content: center;
  transition: transform 80ms ease, background 120ms ease;
}
.pauseBtn.show { display: inline-flex; }
.pauseBtn:active { transform: scale(0.92); }
.pauseBtn:hover { background: rgba(0,240,255,0.18); }

.coinMult {
  color: #fff;
  font-size: 1em;
  letter-spacing: 3px;
  text-shadow: 0 0 10px var(--hot), 0 0 20px var(--cool);
  animation: multPulse 0.5s ease-in-out infinite alternate;
}
.coinMult.hidden { display: none; }
@keyframes multPulse {
  from { transform: scale(1); filter: hue-rotate(0deg); }
  to   { transform: scale(1.12); filter: hue-rotate(90deg); }
}

.comboHud {
  color: var(--toxic);
  font-size: 0.95em;
  letter-spacing: 3px;
  text-shadow: 0 0 8px var(--toxic), 0 0 16px rgba(124,255,77,0.5);
  transform-origin: right center;
}
.comboHud.hidden { display: none; }
.comboHud.pop { animation: comboPop 260ms ease-out; }
@keyframes comboPop {
  0%   { transform: scale(1.4); filter: hue-rotate(0deg) brightness(1.8); }
  60%  { transform: scale(0.96); }
  100% { transform: scale(1);    filter: hue-rotate(0deg) brightness(1); }
}

/* Resume countdown */
.resumeCountdown {
  position: absolute;
  top: 32%;
  left: 0; right: 0;
  text-align: center;
  font-family: var(--ui);
  font-weight: bold;
  font-size: clamp(80px, 24vw, 220px);
  letter-spacing: 12px;
  color: var(--toxic);
  text-shadow:
    0 0 30px var(--toxic),
    0 0 60px var(--cool),
    4px 0 0 var(--hot),
    -4px 0 0 var(--cool);
  pointer-events: none;
  z-index: 12;
  opacity: 0;
}
.resumeCountdown.hidden { display: none; }
.resumeCountdown.tick { animation: tickIn 640ms ease-out forwards; }
@keyframes tickIn {
  0%   { opacity: 0; transform: scale(2.4) skewX(20deg); filter: blur(14px); }
  25%  { opacity: 1; transform: scale(1) skewX(-6deg); filter: blur(0); }
  55%  { opacity: 1; transform: scale(1) skewX(0); }
  100% { opacity: 0; transform: scale(0.55) skewX(0); filter: blur(4px); }
}

.checkpointHint {
  font-size: clamp(11px, 2vw, 14px);
  color: var(--cool);
  letter-spacing: 3px;
  text-shadow: 0 0 8px var(--cool);
  text-transform: uppercase;
  opacity: 0.9;
}
.checkpointHint.hidden { display: none; }

.audioToggles {
  display: flex; gap: 10px; flex-wrap: wrap; justify-content: center;
  margin-top: -4px;
}
.toggleBtn {
  appearance: none;
  background: rgba(8,0,26,0.5);
  color: var(--cool);
  border: 1px solid rgba(0,240,255,0.35);
  font-family: var(--ui);
  font-size: 11px;
  letter-spacing: 2px;
  padding: 6px 12px;
  cursor: pointer;
  text-shadow: 0 0 4px var(--cool);
  transition: transform 80ms ease, border-color 120ms ease, color 120ms ease;
}
.toggleBtn:hover { border-color: var(--cool); }
.toggleBtn:active { transform: scale(0.95); }
.toggleBtn.off {
  color: rgba(233,248,255,0.35);
  border-color: rgba(233,248,255,0.15);
  text-shadow: none;
}

/* Level up banner */
#levelBanner {
  position: absolute;
  top: 30%;
  left: 0; right: 0;
  text-align: center;
  font-size: clamp(40px, 12vw, 120px);
  font-family: var(--ui);
  font-weight: bold;
  letter-spacing: 10px;
  color: var(--toxic);
  text-shadow:
    0 0 20px var(--toxic),
    0 0 40px var(--cool),
    3px 0 0 var(--hot),
    -3px 0 0 var(--cool);
  opacity: 0;
  pointer-events: none;
  z-index: 4;
}
#levelBanner.show {
  animation: lvlIn 1.8s ease-out forwards;
}

/* Reward banner — fires on ×N multiplier pickups and rainbow-shield grabs.
   Styled bolder than the level banner, gold/hot pink with an extra RGB split
   like the GLITCHED OUT headline so it lands as "this is a big deal". */
.multBanner {
  position: absolute;
  top: 28%;
  left: 0; right: 0;
  text-align: center;
  font-family: var(--ui);
  font-weight: bold;
  font-size: clamp(56px, 16vw, 160px);
  letter-spacing: 14px;
  color: var(--coin);
  text-shadow:
    0 0 22px var(--coin),
    0 0 44px var(--hot),
    4px 0 0 var(--hot),
    -4px 0 0 var(--cool),
    0 3px 0 rgba(0,0,0,0.6);
  opacity: 0;
  pointer-events: none;
  z-index: 5;
}
.multBanner.show {
  animation: multIn 1.6s ease-out forwards;
}
.multBanner.shield {
  color: #fff;
  text-shadow:
    0 0 22px var(--cool),
    0 0 44px var(--hot),
    4px 0 0 var(--hot),
    -4px 0 0 var(--cool),
    0 3px 0 rgba(0,0,0,0.6);
}
@keyframes multIn {
  0%   { opacity: 0; transform: scale(0.25) skewX(-24deg) rotate(-4deg); filter: blur(14px); }
  18%  { opacity: 1; transform: scale(1.25) skewX(10deg) rotate(2deg); filter: blur(0); }
  32%  { opacity: 1; transform: scale(0.9) skewX(-4deg) rotate(-1deg); }
  45%  { opacity: 1; transform: scale(1.05) skewX(2deg) rotate(0); }
  60%  { opacity: 1; transform: scale(1) skewX(0) rotate(0); }
  88%  { opacity: 0.95; transform: scale(1) skewX(0); }
  100% { opacity: 0; transform: scale(1.4) skewX(0); filter: blur(6px); }
}
@keyframes lvlIn {
  0%   { opacity: 0; transform: scale(0.3) skewX(20deg); filter: blur(12px); }
  20%  { opacity: 1; transform: scale(1.2) skewX(-8deg); filter: blur(0); }
  35%  { opacity: 1; transform: scale(0.95) skewX(4deg); }
  50%  { opacity: 1; transform: scale(1) skewX(0); }
  85%  { opacity: 0.9; transform: scale(1) skewX(0); }
  100% { opacity: 0; transform: scale(1.4) skewX(0); filter: blur(4px); }
}

/* Overlays */
.overlay {
  position: absolute; inset: 0;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 16px;
  padding: 24px 24px calc(24px + env(safe-area-inset-bottom, 0px));
  background:
    repeating-linear-gradient(0deg, rgba(0,0,0,0.25) 0 2px, transparent 2px 4px),
    radial-gradient(ellipse at center, rgba(16,5,43,0.85), rgba(8,0,26,0.96));
  z-index: 10;
  text-align: center;
  backdrop-filter: blur(2px);
  overflow-y: auto;
  /* Prevent scroll from bubbling to the page — iOS otherwise uses inner
     scroll gestures to toggle the address bar, which resizes the viewport
     and makes the whole UI jump around. */
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  /* body sets touch-action: none to lock gameplay panning; effective
     touch-action is the intersection across ancestors, so we have to
     re-grant vertical panning here or the menu/death/pause overlays
     can't be scrolled with a finger. */
  touch-action: pan-y;
}
.overlay.hidden { display: none; }

h1.glitch, h2.glitch {
  position: relative;
  font-size: clamp(36px, 10vw, 96px);
  margin: 0;
  letter-spacing: 4px;
  color: var(--fg);
  text-transform: uppercase;
  text-shadow: 0 0 14px rgba(0,240,255,0.6);
}
h1.glitch::before, h1.glitch::after,
h2.glitch::before, h2.glitch::after {
  content: attr(data-text);
  position: absolute; inset: 0;
  mix-blend-mode: screen;
}
h1.glitch::before, h2.glitch::before {
  color: var(--hot);
  transform: translate(-3px, 0);
  clip-path: polygon(0 10%, 100% 0, 100% 45%, 0 55%);
  animation: glitch-x 2.2s infinite steps(1);
}
h1.glitch::after, h2.glitch::after {
  color: var(--cool);
  transform: translate(3px, 0);
  clip-path: polygon(0 55%, 100% 45%, 100% 100%, 0 90%);
  animation: glitch-x 1.7s infinite steps(1) reverse;
}
@keyframes glitch-x {
  0%   { transform: translate(-3px, 0); }
  10%  { transform: translate(3px, 1px); }
  20%  { transform: translate(-2px, -1px); }
  30%  { transform: translate(4px, 0); }
  40%  { transform: translate(-4px, 2px); }
  50%  { transform: translate(2px, -2px); }
  60%  { transform: translate(-1px, 1px); }
  70%  { transform: translate(3px, 0); }
  80%  { transform: translate(-2px, 0); }
  90%  { transform: translate(1px, 1px); }
  100% { transform: translate(0, 0); }
}

.tag {
  margin: 0;
  color: var(--cool);
  letter-spacing: 3px;
  text-transform: lowercase;
  opacity: 0.9;
}

.btn {
  appearance: none;
  background: linear-gradient(180deg, var(--hot), #a80e8e);
  color: #fff;
  border: 2px solid #fff;
  font-family: var(--ui);
  font-size: clamp(18px, 3.2vw, 26px);
  letter-spacing: 4px;
  padding: 14px 36px;
  cursor: pointer;
  box-shadow: 0 0 0 2px #000, 0 0 24px rgba(255,43,214,0.6);
  text-shadow: 1px 1px 0 #000;
  transition: transform 80ms ease;
}
.btn:active { transform: translateY(2px) scale(0.98); }
.btnAlt {
  background: linear-gradient(180deg, #1a0840, #0a0120);
  border-color: var(--cool);
  color: var(--cool);
  box-shadow: 0 0 0 2px #000, 0 0 20px rgba(0,240,255,0.5);
  text-shadow: 0 0 6px var(--cool);
}

.dailyBtn {
  display: inline-flex; flex-direction: column; align-items: center;
  gap: 2px; line-height: 1;
  margin-top: 8px;
  border-color: var(--hot);
  color: var(--hot);
  box-shadow: 0 0 0 2px #000, 0 0 20px rgba(255,43,214,0.5);
  text-shadow: 0 0 6px var(--hot);
}
.dailyBtn .dailyLabel { font-size: inherit; letter-spacing: 3px; }
.dailyBtn .dailyDate {
  font-size: 12px; letter-spacing: 2px;
  color: var(--hot); text-shadow: 0 0 6px var(--hot);
  opacity: 0.95;
}
.dailyBtn .dailySub {
  font-size: 9.5px; letter-spacing: 1.5px;
  color: rgba(233, 248, 255, 0.6);
  text-transform: lowercase;
  text-shadow: none;
}
.dailyBtn .dailyBest {
  font-size: 11px; letter-spacing: 2px;
  color: var(--fg); text-shadow: 0 0 4px rgba(255,255,255,0.4);
  opacity: 0.8;
}

/* Friend challenge banner — appears on menu when a ?d=… URL was opened. */
.challengeBanner {
  display: inline-flex;
  flex-direction: column; align-items: center;
  gap: 2px;
  margin: 4px 0;
  padding: 8px 14px;
  border: 2px dashed var(--hot);
  background: rgba(255, 43, 214, 0.08);
  color: var(--fg);
  text-shadow: 0 0 4px rgba(255,255,255,0.4);
  letter-spacing: 2px;
  animation: challengePulse 2.4s ease-in-out infinite alternate;
}
.challengeBanner.hidden { display: none; }
.challengeBanner .challengeLabel { font-size: 10px; opacity: 0.7; }
.challengeBanner .challengeScore {
  font-size: 22px;
  color: var(--hot);
  text-shadow: 0 0 8px var(--hot);
  letter-spacing: 3px;
}
.challengeBanner .challengeSub {
  font-size: 10px; opacity: 0.75; text-transform: lowercase;
}
@keyframes challengePulse {
  from { box-shadow: 0 0 10px rgba(255,43,214,0.2); }
  to   { box-shadow: 0 0 22px rgba(255,43,214,0.55); }
}

.shareBtn {
  border-color: var(--toxic);
  color: var(--toxic);
  box-shadow: 0 0 0 2px #000, 0 0 18px rgba(124,255,77,0.5);
  text-shadow: 0 0 6px var(--toxic);
}

.toast {
  position: fixed;
  left: 50%; bottom: 40px;
  transform: translate(-50%, 20px);
  padding: 10px 18px;
  background: rgba(8, 0, 26, 0.92);
  border: 1.5px solid var(--toxic);
  color: var(--toxic);
  letter-spacing: 2px;
  font-family: var(--ui);
  font-size: 13px;
  text-shadow: 0 0 6px var(--toxic);
  box-shadow: 0 0 18px rgba(124,255,77,0.45);
  pointer-events: none;
  opacity: 0;
  z-index: 20;
  transition: opacity 160ms ease, transform 160ms ease;
}
.toast.hidden { display: none; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }

.deadBtns {
  display: flex; gap: 12px; flex-wrap: wrap; justify-content: center;
}

.help {
  list-style: none; padding: 0; margin: 4px 0 0;
  display: grid; gap: 6px;
  font-size: clamp(12px, 2.2vw, 16px);
  opacity: 0.85;
}
.help b {
  color: var(--toxic);
  background: rgba(124,255,77,0.08);
  padding: 1px 6px;
  border: 1px solid rgba(124,255,77,0.3);
}
.foot {
  margin-top: 4px;
  font-size: 12px;
  opacity: 0.5;
  letter-spacing: 2px;
}

#final {
  font-size: clamp(28px, 6vw, 48px);
  color: var(--toxic);
  text-shadow: 0 0 12px var(--toxic);
  letter-spacing: 3px;
}
#finalCoins {
  font-size: clamp(14px, 2.4vw, 20px);
  color: var(--coin);
  text-shadow: 0 0 10px var(--coin);
  letter-spacing: 3px;
}

/* Shop */
.shop {
  width: min(520px, 94vw);
  margin-top: 6px;
  padding: 12px 14px 14px;
  background:
    linear-gradient(180deg, rgba(0,240,255,0.06), rgba(255,43,214,0.05)),
    rgba(8,0,26,0.55);
  border: 1px solid rgba(0,240,255,0.25);
  box-shadow: 0 0 18px rgba(255,43,214,0.15), inset 0 0 24px rgba(0,240,255,0.08);
}
.shopHead {
  display: flex; justify-content: space-between; align-items: baseline;
  padding-bottom: 8px;
  border-bottom: 1px dashed rgba(0,240,255,0.25);
  margin-bottom: 10px;
}
.shopTitle {
  color: var(--cool);
  letter-spacing: 5px;
  font-size: clamp(14px, 2.4vw, 18px);
  text-shadow: 0 0 8px var(--cool);
}
#bank {
  color: var(--coin);
  letter-spacing: 2px;
  font-size: clamp(14px, 2.4vw, 18px);
  text-shadow: 0 0 8px var(--coin);
}
.skinGrid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(96px, 1fr));
  gap: 8px;
}
.skinChip {
  appearance: none;
  --chipGhostA: #ff2bd6;
  --chipGhostB: #00f0ff;
  position: relative;
  display: grid;
  grid-template-rows: auto auto auto;
  gap: 2px;
  align-items: center;
  justify-items: center;
  padding: 8px 6px;
  background: rgba(8,0,26,0.7);
  border: 1px solid rgba(255,255,255,0.15);
  color: var(--fg);
  font-family: var(--ui);
  font-size: 11px;
  letter-spacing: 1px;
  cursor: pointer;
  transition: transform 80ms ease, border-color 120ms ease;
  overflow: hidden;
}
.skinChip::before {
  content: '';
  position: absolute; inset: 0;
  background:
    linear-gradient(90deg, var(--chipGhostA), transparent 30%, transparent 70%, var(--chipGhostB));
  opacity: 0.12;
  pointer-events: none;
}
.skinChip:hover { border-color: var(--cool); }
.skinChip:active { transform: scale(0.96); }
.skinChip .swatch {
  width: 32px; height: 32px;
  border: 2px solid #fff;
  box-shadow:
    -2px 0 0 var(--chipGhostA),
    2px 0 0 var(--chipGhostB),
    0 0 10px rgba(255,255,255,0.4);
}
.skinChip .name {
  color: var(--fg);
  text-shadow: 0 0 4px rgba(0,240,255,0.6);
  font-size: 11px;
}
.skinChip .cost {
  color: var(--coin);
  font-size: 11px;
  letter-spacing: 2px;
}
.skinChip.selected {
  border-color: var(--toxic);
  box-shadow: 0 0 0 1px var(--toxic), 0 0 18px rgba(124,255,77,0.5);
}
.skinChip.selected .cost { color: var(--toxic); text-shadow: 0 0 6px var(--toxic); }
.skinChip.locked {
  filter: grayscale(0.6) brightness(0.75);
  border-style: dashed;
}
.skinChip.locked .swatch { opacity: 0.5; }
.skinChip.locked:hover { filter: grayscale(0.3) brightness(0.9); }

/* Upgrade chips reuse the skin-chip layout but swap the colored swatch
   for a row of level pips (● filled / ○ empty). */
.upgradeChip .swatch.upgradePips {
  box-shadow: none;
  border: 2px solid var(--cool);
  background: rgba(0, 240, 255, 0.08);
  color: var(--cool);
  text-shadow: 0 0 6px var(--cool);
  display: flex; align-items: center; justify-content: center;
  font-size: 14px; letter-spacing: 2px;
}
.upgradeChip.selected .swatch.upgradePips {
  border-color: var(--toxic);
  color: var(--toxic);
  text-shadow: 0 0 6px var(--toxic);
  background: rgba(124,255,77,0.12);
}
.upgradeChip .detail {
  font-size: 9.5px;
  color: rgba(233, 248, 255, 0.65);
  letter-spacing: 1px;
  text-transform: lowercase;
  line-height: 1.2;
  text-align: center;
}
.upgradeChip.selected .detail { color: var(--toxic); opacity: 0.85; }

.shopHint {
  margin: 8px 0 0;
  font-size: 11px;
  color: rgba(233,248,255,0.5);
  letter-spacing: 2px;
}

/* Version label */
.ver {
  position: absolute;
  bottom: calc(env(safe-area-inset-bottom, 8px) + 6px);
  /* Moved to the left so the mobile JUMP button doesn't cover it. */
  left: calc(env(safe-area-inset-left, 10px));
  padding: 4px 10px;
  font-size: 13px;
  letter-spacing: 2px;
  color: var(--cool);
  background: rgba(0, 240, 255, 0.08);
  border: 1px solid rgba(0, 240, 255, 0.35);
  border-radius: 4px;
  text-shadow: 0 0 6px rgba(0, 240, 255, 0.6);
  /* Tappable so the user can copy the build string for bug reports. */
  pointer-events: auto;
  cursor: pointer;
  z-index: 6;
  transition: transform 80ms ease, background 160ms ease;
}
.ver:hover  { background: rgba(0, 240, 255, 0.18); }
.ver:active { transform: scale(0.94); }

/* Touch controls */
#touch {
  position: absolute;
  bottom: env(safe-area-inset-bottom, 12px);
  left: 0; right: 0;
  display: none;
  justify-content: space-between;
  align-items: flex-end;
  padding: 0 16px 16px;
  pointer-events: none;
  z-index: 5;
}
.touchStack {
  display: flex; flex-direction: column; gap: 10px;
  pointer-events: none;
}
.touchBtn {
  pointer-events: auto;
  appearance: none;
  width: clamp(84px, 22vw, 120px);
  height: clamp(84px, 22vw, 120px);
  border-radius: 50%;
  border: 2px solid var(--fg);
  background: radial-gradient(circle at 30% 30%, rgba(0,240,255,0.35), rgba(0,0,0,0.5));
  color: var(--fg);
  font-family: var(--ui);
  font-size: 16px;
  letter-spacing: 2px;
  text-shadow: 0 0 6px var(--cool);
  box-shadow: 0 0 20px rgba(0,240,255,0.4), inset 0 0 12px rgba(0,240,255,0.25);
}
/* Smaller up/down pair — stacked vertically on the left. */
.touchBtnSm {
  width:  clamp(64px, 16vw, 84px);
  height: clamp(64px, 16vw, 84px);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: 2px; line-height: 1;
  background: radial-gradient(circle at 30% 30%, rgba(255,43,214,0.35), rgba(0,0,0,0.5));
  box-shadow: 0 0 18px rgba(255,43,214,0.4), inset 0 0 10px rgba(255,43,214,0.25);
  text-shadow: 0 0 6px var(--hot);
  color: var(--fg);
}
.touchBtnSm .touchArrow { font-size: 22px; line-height: 1; }
.touchBtnSm .touchLabel { font-size: 10px; letter-spacing: 2px; opacity: 0.85; }
.touchBtn:active { transform: scale(0.95); }

/* Show touch controls on touch devices */
@media (hover: none) and (pointer: coarse) {
  #touch { display: flex; }
  /* Version chip is anchored bottom-left and would sit underneath the
     UP/SLIDE stack, making both unreadable. Hide it on touch — it's a
     desktop bug-report aid. */
  .ver { display: none; }
}