:root{
 --ink:#14101f; --ink2:#0b0814; --panel:#1e1832; --panel2:#251e3d;
 --line:rgba(203,196,230,.16); --glass:rgba(226,222,247,.9);
 --brass:#e3ab54; --brass2:#f3c877; --text:#f4efe4; --muted:#a79fc4;
 --good:#6fe3a0; --bad:#ff7a7a;
 /* theme-swappable accent glows behind the body gradient + orb colors —
    kept as vars (rather than hardcoded in the gradient/orbs below) so a
    cosmetic theme can restyle the whole backdrop, not just buttons */
 --accent1:rgba(227,171,84,.10); --accent2:rgba(120,90,220,.16);
 --orb1:#e3ab54; --orb2:#7a5adc; --orb3:#4facdc;
 --display:'Fraunces',Georgia,serif; --body:'Manrope',Arial,sans-serif; --mono:'IBM Plex Mono',monospace;
}
*{box-sizing:border-box}
body{margin:0;font-family:var(--body);color:var(--text);overflow:hidden;
 background:
  radial-gradient(ellipse 900px 500px at 15% -10%, var(--accent1), transparent 60%),
  radial-gradient(ellipse 700px 600px at 100% 110%, var(--accent2), transparent 60%),
  linear-gradient(160deg,var(--ink),var(--ink2) 70%);
 transition:background .5s ease;
}
h1,h2,p{margin:0}
h1,h2{font-family:var(--display);font-weight:600;letter-spacing:-.01em}

/* ambient drifting glow orbs — signature background texture, echoes the liquid bubbles */
#ambientLayer{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
#ambientLayer span{position:absolute;border-radius:50%;filter:blur(50px);opacity:.35;animation:driftOrb ease-in-out infinite}
@keyframes driftOrb{0%{transform:translate(0,0)}50%{transform:translate(24px,-30px)}100%{transform:translate(0,0)}}

/* rising bubble layer — carbonation-style bubbles drifting up from the bottom,
   generated in JS with randomized size/position/color/timing for variety */
#bubbleLayer{position:fixed;inset:0;z-index:0;pointer-events:none;overflow:hidden}
#bubbleLayer span{position:absolute;bottom:-40px;border-radius:50%;opacity:0;
 animation:riseBubble linear infinite;box-shadow:0 0 10px currentColor inset}
@keyframes riseBubble{
 0%{transform:translate(0,0) scale(.7);opacity:0}
 8%{opacity:.5}
 88%{opacity:.4}
 100%{transform:translate(var(--drift,20px),-112vh) scale(1);opacity:0}
}
@media (prefers-reduced-motion: reduce){#bubbleLayer span{animation:none;display:none}}
@media (prefers-reduced-motion: reduce){#ambientLayer span{animation:none}}

button{border:0;border-radius:999px;padding:clamp(9px,1.8vh,13px) 22px;font-family:var(--body);font-size:14.5px;font-weight:700;
 letter-spacing:.01em;cursor:pointer;color:var(--text);
 background:var(--panel2);border:1px solid var(--line);
 box-shadow:0 1px 0 rgba(255,255,255,.04) inset,0 6px 16px rgba(0,0,0,.25);
 transition:transform .12s ease,box-shadow .12s ease,border-color .12s ease}
button:hover{transform:translateY(-3px) scale(1.03);border-color:rgba(227,171,84,.5)}
button:active{transform:translateY(2px) scale(.96)}
button.bounce{animation:buttonBounce .42s cubic-bezier(.2,.8,.3,1)}
@keyframes buttonBounce{0%{transform:scale(1)}30%{transform:scale(.88)}55%{transform:scale(1.12)}75%{transform:scale(.96)}100%{transform:scale(1)}}
button:disabled{opacity:.4;cursor:not-allowed}
button.primary{background:linear-gradient(180deg,var(--brass2),var(--brass));color:#241804;
 box-shadow:0 1px 0 rgba(255,255,255,.5) inset,0 8px 22px rgba(227,171,84,.35);border:1px solid rgba(255,224,170,.6)}
button.primary:hover{border-color:rgba(255,224,170,.9)}

.screen{display:none;width:100vw;height:100vh;position:relative;padding:clamp(10px,3vh,24px) 24px;z-index:1;overflow-y:auto}
.screen.active{display:flex;flex-direction:column;animation:screenFadeIn .42s cubic-bezier(.2,.8,.2,1)}
@keyframes screenFadeIn{0%{opacity:0;transform:translateY(16px) scale(.99)}100%{opacity:1;transform:translateY(0) scale(1)}}
@media (prefers-reduced-motion: reduce){.screen.active{animation:none}}
.top{display:flex;justify-content:space-between;align-items:flex-start;gap:15px}
.top h2{font-size:26px}
.subtitle{opacity:.8;margin-top:6px;color:var(--muted);font-size:14.5px}
.eyebrow{display:block;font-family:var(--mono);font-size:11px;letter-spacing:.16em;text-transform:uppercase;color:var(--brass2);margin-bottom:clamp(3px,1vh,10px);opacity:.9}
.stepPill{font-family:var(--mono);font-size:12px;letter-spacing:.06em;background:var(--panel2);border:1px solid var(--line);
 padding:7px 13px;border-radius:999px;color:var(--muted)}

.targetBox{align-self:center;text-align:center;display:flex;flex-direction:column;align-items:center}
.mixBox{align-self:center;text-align:center;display:flex;flex-direction:column;align-items:center}
.compareRow{display:flex;align-items:center;justify-content:center;gap:clamp(14px,3.5vw,36px);flex-wrap:wrap;width:100%}
.compareArrow{font-family:var(--display);font-size:clamp(20px,4vh,30px);color:var(--brass2);opacity:.85;align-self:center}
.targetTube{width:clamp(64px,12vh,105px);height:clamp(80px,18vh,180px);border:3px solid var(--glass);border-top:0;border-radius:0 0 30px 30px;position:relative;
 overflow:hidden;background:linear-gradient(160deg,#1a1530,#211a3a);
 box-shadow:0 16px 30px -10px rgba(0,0,0,.55),0 0 0 1px rgba(255,255,255,.03) inset}
.liquid{position:absolute;left:4px;right:4px;bottom:4px;border-radius:0 0 24px 24px;transition:height .5s,background .4s}
.targetLabel{margin-top:clamp(4px,1vh,10px);font-family:var(--display);font-weight:600;font-size:clamp(15px,2.4vh,19px)}

.gameArea{flex:1;display:flex;flex-direction:column;justify-content:flex-start;align-items:center;padding:clamp(4px,1.5vh,14px) 0 clamp(8px,2vh,24px);gap:clamp(8px,2.2vh,20px)}
.tubesRow{position:relative;width:100%;max-width:min(94vw,720px);margin:0 auto;display:flex;justify-content:center;padding:0 46px}
.tubeArrow{position:absolute;top:50%;transform:translateY(-50%);z-index:5;width:38px;height:38px;padding:0;
 border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;line-height:1;
 background:linear-gradient(180deg,var(--brass2),var(--brass));color:#241804;border:1px solid rgba(255,224,170,.7);
 box-shadow:0 6px 16px rgba(227,171,84,.4);opacity:0;pointer-events:none;transition:opacity .2s ease,transform .12s ease}
.tubeArrow.visible{opacity:1;pointer-events:auto}
.tubeArrow:hover{transform:translateY(-50%) scale(1.1)}
.tubeArrow-left{left:0}
.tubeArrow-right{right:0}
.tubes{display:flex;gap:clamp(10px,2.5vh,18px);justify-content:center;flex-wrap:nowrap;overflow-x:hidden;overflow-y:hidden;
 width:100%;padding:2px 6px 8px;-webkit-overflow-scrolling:touch;touch-action:pan-x;
 scrollbar-width:none;
 box-sizing:border-box}
.tubes::-webkit-scrollbar{display:none}
.tubeWrap{flex:0 0 auto}
.tubeWrap{display:flex;flex-direction:column;align-items:center;gap:7px}
.tube{width:clamp(40px,8vh,64px);height:clamp(64px,14vh,140px);border:3px solid var(--glass);border-top:0;border-radius:0 0 22px 22px;
 background:linear-gradient(160deg,#1a1530,#211a3a);position:relative;overflow:hidden;cursor:grab;touch-action:pan-x;
 box-shadow:0 10px 20px -8px rgba(0,0,0,.5),0 0 0 1px rgba(255,255,255,.03) inset}
.tube:hover{border-color:rgba(227,171,84,.55)}
.tube:active{cursor:grabbing}.tube .liquid{left:3px;right:3px;bottom:3px}
.tube.empty{opacity:.38;cursor:not-allowed;filter:grayscale(.55)}
.tube.empty:hover{border-color:var(--glass);transform:none}
.tubeWrap:has(.tube.empty) b{opacity:.55}
.tubeWrap:has(.tube.empty) .percent{color:var(--bad);opacity:.85}
.tubeWrap b{font-family:var(--body);font-weight:700;font-size:13.5px}
.percent{font-family:var(--mono);font-size:11.5px;color:var(--muted);display:inline-block;min-width:90px;text-align:center}

.container{width:clamp(96px,14vh,172px);height:clamp(96px,16vh,182px);border:4px solid var(--glass);border-top:0;border-radius:0 0 32px 32px;
 background:linear-gradient(160deg,#1a1530,#211a3a);position:relative;overflow:hidden;
 box-shadow:0 18px 34px -10px rgba(0,0,0,.55),0 0 0 1px rgba(255,255,255,.03) inset}
.container .liquid{left:5px;right:5px;bottom:5px;border-radius:0 0 28px 28px}
.capacity{margin-top:clamp(4px,1vh,10px);font-family:var(--mono);font-weight:600;font-size:13px;color:var(--muted)}
.mixBreakdown{margin-top:3px;font-family:var(--mono);font-size:11.5px;color:var(--brass2);min-height:15px;max-width:min(60vw,220px)}
.actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.hint{min-height:26px;text-align:center;color:var(--brass2);font-weight:700;font-size:14px}

.tutorialCard{max-width:640px;text-align:center;margin:clamp(4px,1vh,10px) auto;padding:clamp(8px,1.8vh,18px) 22px;border-radius:18px;line-height:1.5;
 background:rgba(37,30,61,.55);border:1px solid var(--line);backdrop-filter:blur(10px);font-size:clamp(12.5px,2vh,14.5px)}

#levelProgress{width:100%;max-width:640px;margin:16px auto 0;height:6px;border-radius:999px;background:var(--panel2);
 border:1px solid var(--line);overflow:hidden;align-self:center}
#levelProgress>div{height:100%;width:0;border-radius:999px;transition:width .5s ease;
 background:linear-gradient(90deg,var(--brass),var(--brass2))}
.progressLabel{text-align:center;font-family:var(--mono);font-size:11.5px;color:var(--muted);margin-top:6px;letter-spacing:.04em}

.accuracyWrap{position:absolute;inset:0;width:100%;height:100%;display:flex;align-items:center;justify-content:center;
 opacity:0;transform:translateX(100%);transition:transform .65s cubic-bezier(.2,.8,.2,1),opacity .35s ease;pointer-events:none}
.accuracyWrap.show{opacity:1;transform:translateX(0);pointer-events:auto}
.accuracyCard{text-align:center;width:min(560px,90%);padding:40px 35px;border-radius:26px;
 background:rgba(30,24,50,.75);border:1px solid var(--line);backdrop-filter:blur(16px);
 box-shadow:0 30px 60px -20px rgba(0,0,0,.6)}
.accuracyCard h2{font-size:15px;letter-spacing:.14em;text-transform:uppercase;font-family:var(--mono);color:var(--muted);font-weight:600}
.score{font-family:var(--mono);font-size:66px;font-weight:600;margin:16px 0 6px;letter-spacing:-.02em}
.resultStatus{font-family:var(--display);font-size:29px;font-weight:700;margin:4px 0 22px}
.passed{color:var(--good);text-shadow:0 0 24px rgba(111,227,160,.4)}

/* streak badge — small flame counter shown in the level header */
.streakBadge{font-family:var(--mono);font-weight:700;font-size:13px;color:var(--brass2);
 background:var(--panel2);border:1px solid var(--line);border-radius:999px;padding:6px 12px;
 align-self:center;transition:transform .2s}
.streakBadge.bump{animation:streakBump .4s ease}
@keyframes streakBump{0%{transform:scale(1)}40%{transform:scale(1.25)}100%{transform:scale(1)}}

/* lives badge hover tooltip — quick coin-for-full-refill redeem, no need to hunt for the banner */
.livesBadgeWrap{position:relative;display:inline-flex;align-items:center;align-self:center}
.livesBadgeWrap #livesBadge{cursor:default;transition:transform .15s ease}
.livesBadgeWrap:hover #livesBadge{transform:scale(1.06)}
.livesBadgeWrap #livesBadge.buyable{cursor:pointer}
.livesTooltip{position:absolute;top:100%;right:0;padding-top:8px;
 min-width:180px;text-align:center;font-size:11.5px;color:var(--muted);
 opacity:0;visibility:hidden;transform:translateY(-4px);
 transition:opacity .18s ease,transform .18s ease;z-index:60;pointer-events:none}
.livesBadgeWrap:hover .livesTooltip{opacity:1;visibility:visible;transform:translateY(0);pointer-events:auto}
.livesTooltipInner{background:rgba(30,24,50,.97);border:1px solid var(--line);border-radius:12px;
 padding:10px 11px;box-shadow:0 20px 44px -14px rgba(0,0,0,.65);backdrop-filter:blur(10px)}

/* points badge hover tooltip — explains how coins are earned (mirrors livesTooltip) */
.pointsBadgeWrap{position:relative;display:inline-flex;align-items:center;align-self:center}
.pointsBadgeWrap #pointsBadge{cursor:default;transition:transform .15s ease}
.pointsBadgeWrap:hover #pointsBadge{transform:scale(1.06)}
.pointsTooltip{position:absolute;top:100%;left:0;padding-top:8px;
 min-width:200px;text-align:left;font-size:11.5px;color:var(--muted);
 opacity:0;visibility:hidden;transform:translateY(-4px);
 transition:opacity .18s ease,transform .18s ease;z-index:60;pointer-events:none}
.pointsBadgeWrap:hover .pointsTooltip{opacity:1;visibility:visible;transform:translateY(0)}
.pointsTooltipInner{background:rgba(30,24,50,.97);border:1px solid var(--line);border-radius:12px;
 padding:10px 11px;box-shadow:0 20px 44px -14px rgba(0,0,0,.65);backdrop-filter:blur(10px)}
.pointsTooltipInner div{margin:0 0 5px;line-height:1.4}
.pointsTooltipInner div:last-child{margin-bottom:0}

/* star rating row on the result screen */
.starsRow{display:flex;gap:10px;justify-content:center;margin:16px 0 4px;font-size:34px;line-height:1}
.starsRow .star{color:var(--line);transition:color .3s,transform .3s;transform:scale(.4);display:inline-block}
.starsRow .star.lit{color:var(--brass2);text-shadow:0 0 16px rgba(243,200,119,.6);transform:scale(1)}
.starsRow .star.pop{animation:starPop .45s ease}
@keyframes starPop{0%{transform:scale(.4)}55%{transform:scale(1.35)}100%{transform:scale(1)}}

/* small star row on level-select cards */
.levelCard .cardStars{font-size:11px;letter-spacing:2px;color:var(--line);margin-top:2px}
.levelCard .cardStars.hasStars{color:var(--brass2)}

/* confetti burst — plain colored pieces that fall + spin, cleaned up in JS after the animation ends */
#confettiLayer{position:fixed;inset:0;z-index:9998;pointer-events:none;overflow:hidden}
#confettiLayer i{position:absolute;top:-20px;display:block;opacity:.95;animation:confettiFall linear forwards}
@keyframes confettiFall{
 0%{transform:translate(0,0) rotate(0deg);opacity:1}
 100%{transform:translate(var(--cx,0px),108vh) rotate(var(--cr,540deg));opacity:.85}
}
@media (prefers-reduced-motion: reduce){#confettiLayer{display:none}}
.failed{color:var(--bad);text-shadow:0 0 24px rgba(255,122,122,.35)}
.accuracyCard.shakeFail{animation:shakeFail .42s ease}
@keyframes shakeFail{
 0%,100%{transform:translateX(0)}
 20%{transform:translateX(-7px)}
 40%{transform:translateX(7px)}
 60%{transform:translateX(-5px)}
 80%{transform:translateX(4px)}
}
@media (prefers-reduced-motion: reduce){.accuracyCard.shakeFail{animation:none}}
.bar{height:18px;border-radius:20px;background:var(--ink2);overflow:hidden;border:1px solid var(--line)}
.bar>div{height:100%;width:0;transition:width 1s;position:relative;overflow:hidden}
.bar>div::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.45),transparent);width:60px;animation:barShimmer 1.1s ease-in-out}
@keyframes barShimmer{0%{transform:translateX(-80px)}100%{transform:translateX(320px)}}
#accuracyMessage{color:var(--muted);font-size:14.5px;line-height:1.5}

.modal{position:absolute;inset:0;background:rgba(11,8,20,.7);display:none;align-items:center;justify-content:center;z-index:20}
.modal.show{display:flex;animation:modalBackdropIn .22s ease}
.modal.show .modalCard{animation:modalCardIn .34s cubic-bezier(.2,.8,.2,1)}
.modal.closing{animation:modalBackdropOut .18s ease forwards}
.modal.closing .modalCard{animation:modalCardOut .18s cubic-bezier(.4,0,1,1) forwards}
@keyframes modalBackdropIn{0%{opacity:0}100%{opacity:1}}
@keyframes modalBackdropOut{0%{opacity:1}100%{opacity:0}}
@keyframes modalCardIn{0%{opacity:0;transform:scale(.9) translateY(14px)}100%{opacity:1;transform:scale(1) translateY(0)}}
@keyframes modalCardOut{0%{opacity:1;transform:scale(1) translateY(0)}100%{opacity:0;transform:scale(.94) translateY(8px)}}
@media (prefers-reduced-motion: reduce){.modal.show,.modal.show .modalCard,.modal.closing,.modal.closing .modalCard{animation:none}}
.modalCard{background:rgba(30,24,50,.9);border:1px solid var(--line);backdrop-filter:blur(14px);padding:30px;border-radius:22px;text-align:center;max-width:500px}
.volumeRow{display:flex;align-items:center;gap:10px;margin:0 0 10px;text-align:left}
.volumeRow label{font-family:var(--body);font-size:13.5px;font-weight:600;width:98px;flex:0 0 auto}
.volumeRow input[type="range"]{flex:1;accent-color:var(--brass);height:4px;cursor:pointer}
.volumeValue{font-family:var(--mono);font-size:12px;color:var(--muted);width:36px;flex:0 0 auto;text-align:right}
.graphicsBlock{text-align:left;margin:0 0 16px}
.graphicsBlock .gfxLabel{font-family:var(--body);font-size:13.5px;font-weight:600;margin-bottom:8px}
.graphicsPills{display:flex;gap:8px;flex-wrap:wrap}
.graphicsPills button{flex:1;min-width:90px;padding:9px 10px;border-radius:12px;font-size:12.5px}
.graphicsPills button.active{background:linear-gradient(180deg,var(--brass2),var(--brass));color:#241804;border-color:rgba(255,224,170,.7)}
.graphicsHint{margin-top:8px;font-size:12px;color:var(--muted);line-height:1.4;min-height:32px}

/* Performance mode: CSS tubes instead of WebGL, drop decorative layers */
body.perf-mode .tube,body.perf-mode .container,body.perf-mode .targetTube{opacity:1}
body.perf-mode #gl3d{
 visibility:hidden !important;
 display:none !important;
 opacity:0 !important;
 pointer-events:none !important
}
body.perf-mode .tube,body.perf-mode .container,body.perf-mode .targetTube{
 opacity:1 !important
}
/* High + Balanced use WebGL only: never render the underlying 2D tube artwork. */
body:not(.perf-mode) .tube,
body:not(.perf-mode) .container,
body:not(.perf-mode) .targetTube{
 opacity:0 !important;
 visibility:visible !important;
}
body:not(.perf-mode) .tubeWrap{
 visibility:visible;
}
body.perf-mode #ambientLayer,body.perf-mode #bubbleLayer,body.perf-mode #confettiLayer{display:none !important}
body.perf-mode::before{animation:none;display:none}
body.perf-mode .bubble{display:none}
body.perf-mode .accuracyCard::before{animation:none}
body.perf-mode .loadingCore,body.perf-mode .loadingRing{animation:none}
body.balanced-mode #ambientLayer,body.balanced-mode #bubbleLayer{display:none !important}
body.balanced-mode::before{animation:none}
body.balanced-mode #confettiLayer{display:none}
body.balanced-mode .bubble{display:none}

.paletteRow{display:flex;flex-wrap:wrap;gap:9px;justify-content:center;margin:22px auto 0;max-width:340px}
.startSecondaryRow{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:14px}
.paletteRow span{width:15px;height:15px;border-radius:50%;box-shadow:0 0 10px currentColor,0 0 0 1px rgba(255,255,255,.15) inset}

@media(max-width:600px){
 .container{width:145px;height:155px}
 .score{font-size:52px}.accuracyCard{padding:30px 22px}
}

/* Narrow portrait phones: the tube width/gap/label formulas above are tuned
   for wider screens, and on a narrow phone in portrait they were forcing
   most of the ingredient tubes off-screen so only one was visible at a
   time (needing the arrow buttons to see the rest). This tightens the
   tube box, gap, and label width so several tubes fit in view together. */
@media(max-width:420px){
 .tubesRow{padding:0 32px}
 .tube{width:clamp(32px,15vw,48px);height:clamp(50px,20vw,86px)}
 .tubes{gap:7px}
 .percent{min-width:58px;font-size:10px}
 .tubeWrap b{font-size:11.5px}
 .tubeWrap{gap:4px}
}

/* Short viewports: landscape phones, tightly embedded previews (CrazyGames, etc).
   Width-based rules above don't catch a wide-but-short window, so this is keyed
   on height instead and pushes every dimension further down. */
@media(max-height:560px){
 .screen{padding:6px 16px}
 .targetTube{width:56px;height:64px}
 .tube{width:44px;height:52px}
 .container{width:80px;height:82px}
 .tutorialCard{padding:5px 14px;font-size:11.5px;line-height:1.3;margin:2px auto}
 .eyebrow{margin-bottom:2px;font-size:10px}
 .gameArea{gap:6px;padding:2px 0 8px}
 .top h2{font-size:19px}
 .subtitle{font-size:12px;margin-top:2px}
 .targetLabel{font-size:14px;margin-top:2px}
 .capacity{font-size:11px;margin-top:2px}
 .percent{display:none}
 #levelProgress{margin-top:6px}
 .progressLabel{font-size:10px;margin-top:2px}
 button{padding:7px 16px;font-size:12.5px}
 .compareRow{flex-wrap:nowrap;gap:10px}
 .compareArrow{font-size:18px}
}

/* Slightly taller landscape phones (561–700px tall) still don't have room
   for the full-size layout once the on-screen browser chrome is counted,
   so this covers the gap between the 560px rule above and full desktop
   sizing — same idea, lighter touch, still enough to avoid page scroll. */
@media(orientation:landscape) and (min-height:561px) and (max-height:700px){
 .screen{padding:8px 20px}
 .gameArea{gap:8px;padding:2px 0 10px}
 .targetTube{width:64px;height:76px}
 .tube{width:48px;height:60px}
 .container{width:100px;height:104px}
 .top h2{font-size:21px}
 .subtitle{font-size:13px;margin-top:3px}
 .compareRow{flex-wrap:nowrap;gap:16px}
 .tutorialCard{padding:8px 16px;font-size:12.5px;margin:4px auto}
 #levelProgress{margin-top:8px}
}

/* --- liquid particle simulation --- */
.liquid{isolation:isolate}
.liquid::after{content:"";position:absolute;left:0;right:0;top:0;height:9px;background:linear-gradient(180deg,rgba(255,255,255,.55),rgba(255,255,255,0));pointer-events:none}
.bubble{position:absolute;border-radius:50%;pointer-events:none;background:radial-gradient(circle at 32% 28%,rgba(255,255,255,.9),rgba(255,255,255,.04) 70%);filter:blur(2.2px);opacity:.5;animation:bubbleFloat ease-in-out infinite;mix-blend-mode:soft-light}
@keyframes bubbleFloat{0%{transform:translateY(0) scale(1)}50%{transform:translateY(-9px) scale(1.08)}100%{transform:translateY(0) scale(1)}}
@media (prefers-reduced-motion: reduce){.bubble{animation:none}}
.tube.pouring{animation:tubeTip .5s ease}
@keyframes tubeTip{0%{transform:rotate(0)}30%{transform:rotate(-14deg)}70%{transform:rotate(-14deg)}100%{transform:rotate(0)}}
.container.receiving{animation:containerJolt .4s ease}
@keyframes containerJolt{0%{transform:translateY(0)}30%{transform:translateY(3px)}100%{transform:translateY(0)}}
#pourLayer{position:fixed;inset:0;pointer-events:none;z-index:30;overflow:hidden}
.streamDrop{position:absolute;border-radius:50%;filter:blur(.5px);box-shadow:0 0 6px #0006}
.tubeClone{position:fixed;margin:0;z-index:1000;pointer-events:none;will-change:transform;filter:drop-shadow(0 10px 18px rgba(0,0,0,.35))}
.pourSource{visibility:hidden}

/* --- realistic pour stream: a tapered, wobbling liquid ribbon rendered as
   an SVG path (not discrete drops), revealed top-down as it grows and
   retracted top-down as the tube tips back, so it reads as a continuous
   falling column of liquid rather than a sprinkle of particles. --- */
.streamWrap{position:fixed;pointer-events:none;z-index:29;
 clip-path:inset(0% 0% 100% 0%);transition:clip-path .16s cubic-bezier(.3,.6,.2,1)}
.streamWrap.grown{clip-path:inset(0% 0% 0% 0%);transition:clip-path .16s cubic-bezier(.2,.7,.3,1)}
.streamWrap.retracting{clip-path:inset(100% 0% 0% 0%);transition:clip-path .22s cubic-bezier(.6,0,.85,.3)}
.streamPath{transition:d .16s ease-out}
.splashDrop{position:fixed;border-radius:50%;pointer-events:none;filter:blur(.3px);z-index:29}
.impactFlash{position:fixed;border-radius:50%;pointer-events:none;z-index:29;
 background:radial-gradient(circle,rgba(255,255,255,.85),rgba(255,255,255,0) 72%);
 transform:translate(-50%,-50%) scale(.3);opacity:.9;animation:flashPop .3s ease-out forwards}
@keyframes flashPop{0%{transform:translate(-50%,-50%) scale(.25);opacity:.85}100%{transform:translate(-50%,-50%) scale(1.7);opacity:0}}
.ripple{position:fixed;border-radius:50%;pointer-events:none;z-index:29;
 border:2px solid rgba(255,255,255,.5);transform:translate(-50%,-50%) scaleX(1) scaleY(.35);opacity:.75;
 animation:rippleGrow .55s ease-out forwards}
@keyframes rippleGrow{0%{transform:translate(-50%,-50%) scaleX(.3) scaleY(.12);opacity:.7}100%{transform:translate(-50%,-50%) scaleX(2.6) scaleY(.9);opacity:0}}
@keyframes liquidSlosh{
 0%{transform:skewX(0deg) scaleY(1)}
 12%{transform:skewX(-7deg) scaleY(1.03)}
 32%{transform:skewX(4.5deg) scaleY(.99)}
 52%{transform:skewX(-2.6deg) scaleY(1.015)}
 72%{transform:skewX(1.4deg) scaleY(1)}
 100%{transform:skewX(0deg) scaleY(1)}
}
.liquid.slosh{animation:liquidSlosh .68s cubic-bezier(.36,.07,.19,.97);transform-origin:50% 100%}
@media (prefers-reduced-motion: reduce){
 .streamWrap,.splashDrop,.impactFlash,.ripple{display:none}
 .liquid.slosh{animation:none}
}

/* --- 3D rendering handoff ---------------------------------------------
   The tube/container/liquid DOM elements below are kept fully in the
   layout (same size, same click targets, same responsive flex/scroll
   behavior) but made invisible: a single WebGL canvas (#gl3d) draws the
   real glass + liquid on top of them, positioned to match each element's
   bounding box every frame. opacity:0 (not visibility/display) so they
   stay interactive and still measurable via getBoundingClientRect. */
.tube,.container,.targetTube{opacity:0}
#gl3d{position:fixed;inset:0;width:100vw;height:100vh;z-index:5;pointer-events:none;visibility:hidden}

/* --- level select screen --- */
.levelSelectWrap{width:min(900px,100%);margin:auto;text-align:center}
.levelSelectHeader{margin-bottom:24px}
.levelGrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(90px,1fr));gap:12px;max-width:820px;margin:0 auto 22px}
.levelCard{position:relative;min-height:78px;padding:12px 8px;border-radius:18px;background:var(--panel2);border:1px solid var(--line);color:var(--text);box-shadow:0 8px 20px rgba(0,0,0,.22);transition:transform .12s,border-color .12s,opacity .12s}
.levelCard:not(:disabled):hover{transform:translateY(-4px);border-color:rgba(227,171,84,.65)}
.levelCard:disabled{opacity:.38;cursor:not-allowed}
.levelCard .num{display:block;font-family:var(--mono);font-size:17px;font-weight:700}
.levelCard .state{display:block;margin-top:5px;font-size:11px;color:var(--muted)}
.levelCard.current{border-color:var(--brass);box-shadow:0 0 0 1px rgba(227,171,84,.22),0 8px 24px rgba(227,171,84,.14)}
.levelCard.completed .state{color:var(--good)}
@media(max-width:600px){.levelGrid{grid-template-columns:repeat(5,1fr);gap:8px}.levelCard{min-height:66px;padding:9px 4px;border-radius:14px}.levelCard .num{font-size:14px}.levelCard .state{font-size:9px}}

/* cosmetic theme picker — mirrors .levelGrid/.levelCard so unlocks feel
   like part of the same progression system rather than a bolted-on menu */
.themeGrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;max-width:820px;margin:0 auto 22px}
.themeCard{position:relative;padding:16px 14px;border-radius:18px;background:var(--panel2);border:1px solid var(--line);
 color:var(--text);box-shadow:0 8px 20px rgba(0,0,0,.22);transition:transform .12s,border-color .12s,opacity .12s;
 cursor:pointer;text-align:left}
.themeCard:hover{transform:translateY(-4px);border-color:rgba(227,171,84,.5)}
.themeCard.active{border-color:var(--brass);box-shadow:0 0 0 1px rgba(227,171,84,.22),0 8px 24px rgba(227,171,84,.14)}
.themeCard.locked{opacity:.5;cursor:not-allowed}
.themeCard.locked:hover{transform:none;border-color:var(--line)}
.themeSwatches{display:flex;gap:6px;margin-bottom:10px}
.themeSwatches i{display:block;width:22px;height:22px;border-radius:50%;border:2px solid rgba(255,255,255,.25)}
.themeCard .name{display:block;font-weight:700;font-size:14.5px}
.themeCard .req{display:block;margin-top:4px;font-size:11.5px;color:var(--muted)}
.themeCard.active .req{color:var(--good)}
.themeCard .lockIcon{position:absolute;top:12px;right:12px;font-size:15px;opacity:.7}


/* --- loading screen --- */
#loadingScreen{position:fixed;inset:0;z-index:100;background:
 radial-gradient(ellipse 700px 450px at 15% -10%,rgba(227,171,84,.14),transparent 60%),
 radial-gradient(ellipse 650px 500px at 100% 110%,rgba(120,90,220,.18),transparent 60%),
 linear-gradient(160deg,var(--ink),var(--ink2) 70%);
 display:flex;align-items:center;justify-content:center;transition:opacity .55s ease,visibility .55s ease}
#loadingScreen.hide{opacity:0;visibility:hidden;pointer-events:none}
.loadingCard{text-align:center;width:min(430px,88vw)}
.loadingTitle{font-family:var(--display);font-size:32px;font-weight:600}
.loadingText{margin-top:8px;color:var(--muted);font-size:14px;min-height:20px}
.loadingPercent{font-family:var(--mono);font-size:22px;font-weight:600;letter-spacing:-.01em;margin-top:2px}

.loadingOrbit{position:relative;width:120px;height:120px;margin:22px auto 12px}
.loadingRingSvg{position:absolute;inset:0;width:100%;height:100%}
#loadingProgressCircle{transition:stroke-dashoffset .3s ease}
.loadingCore{position:absolute;top:50%;left:50%;width:34px;height:34px;margin:-17px;border-radius:50%;
 background:radial-gradient(circle at 35% 30%,var(--brass2),var(--brass) 60%,#8a6ae0);
 box-shadow:0 0 26px rgba(227,171,84,.55);animation:corePulse 1.6s ease-in-out infinite}
@keyframes corePulse{0%,100%{transform:scale(1);opacity:.88}50%{transform:scale(1.18);opacity:1}}
.loadingRing{position:absolute;top:50%;left:50%;width:0;height:0;animation:orbitSpin 3.4s linear infinite}
.loadingRing .dot{position:absolute;top:0;left:0;width:11px;height:11px;margin:-5.5px;border-radius:50%}
@keyframes orbitSpin{from{transform:translate(0,0) rotate(0deg)}to{transform:translate(0,0) rotate(360deg)}}
@media (prefers-reduced-motion: reduce){.loadingRing{animation:none}.loadingCore{animation:none}}


/* ===== POLISH PASS: premium HUD + micro-interactions ===== */
:root{
  --goldGlow:rgba(243,200,119,.24);
  --panelGlass:rgba(30,24,50,.68);
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:linear-gradient(115deg,transparent 0 42%,rgba(255,255,255,.018) 50%,transparent 58%);
  background-size:240% 100%;animation:labSheen 18s linear infinite;
}
@keyframes labSheen{0%{background-position:140% 0}100%{background-position:-60% 0}}
.startStats{
  display:grid;grid-template-columns:repeat(3,1fr);gap:9px;
  max-width:520px;margin:22px auto 0;
}
.statCard{
  padding:11px 8px;border-radius:16px;background:rgba(37,30,61,.58);
  border:1px solid var(--line);backdrop-filter:blur(12px);
  box-shadow:0 10px 28px rgba(0,0,0,.18);
}
.statCard .statValue{display:block;font-family:var(--mono);font-size:16px;font-weight:700;color:var(--brass2)}
.statCard .statLabel{display:block;margin-top:3px;font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.08em}
.labRank{
  display:inline-flex;align-items:center;gap:7px;margin-top:12px;padding:7px 12px;
  border-radius:999px;background:rgba(227,171,84,.08);border:1px solid rgba(227,171,84,.18);
  color:var(--brass2);font-family:var(--mono);font-size:11px;letter-spacing:.06em;
}
.difficultyChip{
  display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:999px;
  background:rgba(255,255,255,.045);border:1px solid var(--line);color:var(--muted);
  font-family:var(--mono);font-size:10.5px;letter-spacing:.04em;
}
/* Level-select: player progress badge (Beginner/Pro/Master/Creative, based on
   levels passed) — same visual language as .labRank on the Start screen. */
.playerRankBadge{
  display:inline-flex;align-items:center;gap:8px;margin-top:14px;padding:8px 14px;
  border-radius:999px;background:rgba(227,171,84,.08);border:1px solid rgba(227,171,84,.18);
  color:var(--brass2);font-family:var(--mono);font-size:11.5px;letter-spacing:.05em;font-weight:700;
}
.playerRankBadge .prProgress{color:var(--muted);font-weight:600;letter-spacing:.03em}
/* Level-select: difficulty-mode tabs, filter the grid below to one accuracy tier at a time */
.modeTabs{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin:20px 0 22px}
.modeTab{padding:9px 15px;border-radius:999px;background:var(--panel2);border:1px solid var(--line);
  font-family:var(--body);font-size:12.5px;font-weight:700;color:var(--muted);cursor:pointer;
  transition:transform .12s ease,border-color .12s ease,color .12s ease;display:inline-flex;align-items:center;gap:6px}
.modeTab:hover{transform:translateY(-2px);border-color:rgba(227,171,84,.5);color:var(--text)}
.modeTab.active{background:linear-gradient(180deg,var(--brass2),var(--brass));color:#241804;border-color:rgba(255,224,170,.7)}
.modeTab .modeAcc{opacity:.75;font-family:var(--mono);font-size:10.5px}
.modeTab.active .modeAcc{opacity:.85}
.modeTab.modeLocked{opacity:.55}
@media(max-width:600px){.modeTab{padding:8px 11px;font-size:11.5px}}
#levelTitle{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
#targetLiquid{filter:drop-shadow(0 0 18px rgba(243,200,119,.12))}
#mixContainer{transition:filter .25s ease,transform .25s ease}
#mixContainer.full{filter:drop-shadow(0 0 22px var(--goldGlow));transform:translateY(-2px)}
#matchBtn.readyPulse{animation:readyPulse 1.4s ease-in-out infinite}
@keyframes readyPulse{
 0%,100%{box-shadow:0 1px 0 rgba(255,255,255,.5) inset,0 8px 22px rgba(227,171,84,.35)}
 50%{box-shadow:0 1px 0 rgba(255,255,255,.5) inset,0 8px 28px rgba(227,171,84,.55),0 0 0 4px rgba(227,171,84,.18)}
}
@media (prefers-reduced-motion: reduce){#matchBtn.readyPulse{animation:none}}
.accuracyCard{position:relative;overflow:hidden}
.accuracyCard::before{
  content:"";position:absolute;inset:-45%;pointer-events:none;
  background:radial-gradient(circle,rgba(243,200,119,.08),transparent 52%);
  animation:resultGlow 4s ease-in-out infinite;
}
.accuracyCard>*{position:relative}
@keyframes resultGlow{50%{transform:scale(1.08);opacity:.7}}
.resultMeta{
  display:flex;justify-content:center;gap:8px;flex-wrap:wrap;margin:-5px 0 13px;
}
.resultPill{
  padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.045);
  border:1px solid var(--line);color:var(--muted);font:600 10.5px var(--mono);
}
.resultPill strong{color:var(--text)}
#keyboardHint{
  margin-top:13px;color:var(--muted);font:500 10.5px var(--mono);
  opacity:.75;letter-spacing:.02em;
}
@media(max-width:600px){
  .startStats{grid-template-columns:repeat(3,1fr);gap:6px}
  .statCard{padding:9px 5px}.statCard .statValue{font-size:14px}
  .statCard .statLabel{font-size:8.5px}
}
@media(prefers-reduced-motion:reduce){body::before,.accuracyCard::before{animation:none}}