/* ============================================================
   LATENT SPACE - interface layer
   The 3D arena lives on <canvas>; everything here floats above it.
   Type stays in the DOM so it is crisp, selectable and screen-reader
   reachable at every size.
   ============================================================ */

:root{
  /* zone accents are re-written at runtime by Environment.applyTheme() */
  --accent:#52e5ff;
  --accent-2:#ffc857;
  --accent-dim:#1d7f93;
  --glow:82,229,255;

  --ink:#eef4ff;
  --ink-soft:#c3cee2;   /* 11.9:1 on the HUD scrim */
  --ink-faint:#9aa8c1;  /* 7.6:1 on the HUD scrim - was #6d7a93 at 4.77:1 over
                            pure black, which left no budget for a bright zone */

  --bg:#05070d;
  --panel:rgba(8,12,22,.94);
  --panel-solid:#0a0f1b;
  --panel-line:rgba(120,160,210,.20);
  --panel-line-hot:rgba(var(--glow),.45);

  --good:#5ef2a8;
  --bad:#ff5d6c;
  --warn:#ffb547;
  --partial:#c9a4ff;

  --r-sm:6px; --r-md:12px; --r-lg:20px;
  --sp:clamp(10px, 1.6vw, 18px);
  --hud-pad:clamp(10px, 1.8vw, 26px);

  --f-ui:'Inter var','Inter',ui-sans-serif,system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif;
  --f-mono:ui-monospace,'SF Mono','SFMono-Regular','JetBrains Mono','Fira Code',Menlo,Consolas,'Liberation Mono',monospace;

  --ease-out:cubic-bezier(.16,1,.3,1);
  --ease-in-out:cubic-bezier(.65,0,.35,1);
  --ease-back:cubic-bezier(.34,1.56,.64,1);
  --t-fast:140ms; --t-med:320ms; --t-slow:640ms;
}

*,*::before,*::after{box-sizing:border-box}
html,body{height:100%;margin:0;padding:0}
html{-webkit-text-size-adjust:100%}
body{
  background:var(--bg);
  color:var(--ink);
  font-family:var(--f-ui);
  font-size:16px;
  line-height:1.45;
  overflow:hidden;
  overscroll-behavior:none;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  touch-action:manipulation;
}
button,input{font:inherit;color:inherit}
kbd{
  font-family:var(--f-mono);font-size:.74em;padding:.12em .42em;border-radius:4px;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
  border-bottom-width:2px;letter-spacing:.02em;
}
.sr-only{
  position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;
  overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap;border:0;
}
.noscript{position:fixed;inset:0;display:grid;place-items:center;font-family:var(--f-mono);padding:2rem;text-align:center}

#app{position:fixed;inset:0;overflow:hidden}
#scene{position:absolute;inset:0;width:100%;height:100%;display:block;touch-action:none}

/* --- full-screen atmospheric layers ------------------------- */
#vignette{
  position:absolute;inset:0;pointer-events:none;z-index:2;
  background:
    radial-gradient(130% 100% at 50% 46%, transparent 38%, rgba(0,0,0,.30) 74%, rgba(0,0,0,.72) 100%);
  mix-blend-mode:multiply;
  transition:opacity var(--t-slow) var(--ease-out);
}
#grain{
  position:absolute;inset:-60px;pointer-events:none;z-index:3;opacity:.05;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)' opacity='.55'/%3E%3C/svg%3E");
  animation:grainShift 640ms steps(3) infinite;
}
@keyframes grainShift{
  0%{transform:translate(0,0)}33%{transform:translate(-14px,9px)}66%{transform:translate(11px,-7px)}100%{transform:translate(0,0)}
}
#flash{
  position:absolute;inset:0;pointer-events:none;z-index:6;opacity:0;
  background:radial-gradient(120% 90% at 50% 50%, rgba(var(--glow),.55), transparent 70%);
  transition:opacity 460ms var(--ease-out);
}
#flash.on{opacity:.55;transition-duration:50ms}
#flash.bad{--glow:255,93,108}
#flash.good{--glow:94,242,168}

/* ============================================================
   HUD
   ============================================================ */
/* The HUD sits directly on the rendered scene, so the small de-emphasised
   strings need a predictable backdrop rather than whatever the sector's glow
   happens to be. These two strips are the contrast budget: they darken the top
   and bottom bands enough that every HUD string clears 4.5:1 in every sector,
   while leaving the middle of the frame - where the answers live - untouched. */
.hud::before,.hud::after{
  content:'';position:absolute;left:0;right:0;height:clamp(96px,17vh,168px);
  pointer-events:none;z-index:-1;
}
.hud::before{top:0;background:linear-gradient(180deg,rgba(3,5,10,.86) 0%,rgba(3,5,10,.62) 46%,rgba(3,5,10,0) 100%)}
.hud::after{bottom:0;background:linear-gradient(0deg,rgba(3,5,10,.88) 0%,rgba(3,5,10,.64) 46%,rgba(3,5,10,0) 100%)}

.hud{
  position:absolute;inset:0;z-index:8;pointer-events:none;
  display:flex;flex-direction:column;justify-content:space-between;
  padding:calc(var(--hud-pad) + env(safe-area-inset-top,0px)) var(--hud-pad) calc(var(--hud-pad) + env(safe-area-inset-bottom,0px));
  opacity:0;transform:translateY(-6px);
  transition:opacity var(--t-med) var(--ease-out), transform var(--t-med) var(--ease-out);
}
#app[data-hud="on"] .hud{opacity:1;transform:none}
.hud button{pointer-events:auto}
.hud-row{display:flex;align-items:flex-start;gap:var(--sp);width:100%}
.hud-bottom{align-items:flex-end}
.hud-cell{display:flex;flex-direction:column;gap:8px;min-width:0}
.hud-left{flex:1 1 0;align-items:flex-start}
.hud-center{flex:0 0 auto;align-items:center}
.hud-right{flex:1 1 0;align-items:flex-end;text-align:right}
.hud-bl{flex:1 1 0;align-items:flex-start}
.hud-bc{flex:0 0 auto;align-items:center}
.hud-br{flex:1 1 0;align-items:flex-end}

.zone-tag{display:flex;align-items:baseline;gap:9px;font-weight:650;letter-spacing:.14em;font-size:clamp(10px,1.15vw,13px)}
.zone-index{font-family:var(--f-mono);color:var(--accent);font-size:1.5em;line-height:1;text-shadow:0 0 18px rgba(var(--glow),.6)}
.zone-name{color:var(--ink-soft);text-transform:uppercase;text-shadow:0 1px 8px rgba(0,0,0,.9)}
.stage-dots{display:flex;gap:5px;flex-wrap:wrap;max-width:min(46vw,280px)}
.stage-dots i{
  width:16px;height:4px;border-radius:2px;background:rgba(255,255,255,.16);
  transition:background var(--t-fast),box-shadow var(--t-fast),transform var(--t-fast) var(--ease-back);
}
.stage-dots i.done{background:var(--accent);box-shadow:0 0 10px rgba(var(--glow),.75)}
.stage-dots i.miss{background:var(--bad);box-shadow:0 0 10px rgba(255,93,108,.6)}
.stage-dots i.part{background:var(--partial)}
.stage-dots i.now{background:var(--ink);transform:scaleX(1.5)}

.lives{display:flex;gap:6px;margin-top:2px}
.lives i{
  width:13px;height:13px;
  background:var(--good);
  clip-path:polygon(50% 0,100% 50%,50% 100%,0 50%);
  filter:drop-shadow(0 0 7px rgba(94,242,168,.75));
  transition:transform 260ms var(--ease-back),opacity 260ms,filter 260ms;
}
.lives i.spent{background:rgba(255,255,255,.13);filter:none;transform:scale(.66);opacity:.5}
.lives i.pop{animation:lifePop 480ms var(--ease-out)}
@keyframes lifePop{0%{transform:scale(1)}25%{transform:scale(2.1);filter:drop-shadow(0 0 22px var(--bad))}100%{transform:scale(.66)}}

/* timer ring */
.timer{position:relative;width:clamp(72px,9.2vw,104px);aspect-ratio:1;display:grid;place-items:center}
.timer-ring{position:absolute;inset:0;transform:rotate(-90deg);overflow:visible}
.timer-track{fill:none;stroke:rgba(255,255,255,.10);stroke-width:5}
.timer-fill{
  fill:none;stroke:var(--accent);stroke-width:5;stroke-linecap:round;
  stroke-dasharray:276.5;stroke-dashoffset:0;
  filter:drop-shadow(0 0 8px rgba(var(--glow),.85));
  transition:stroke 300ms linear;
}
.timer-num{
  font-family:var(--f-mono);font-size:clamp(21px,2.7vw,30px);font-weight:600;
  line-height:1;font-variant-numeric:tabular-nums;letter-spacing:-.02em;
}
.timer-label{position:absolute;bottom:-16px;font-size:10px;letter-spacing:.18em;color:var(--ink-soft);white-space:nowrap;text-shadow:0 1px 8px rgba(0,0,0,.95)}
.timer.warn .timer-fill{stroke:var(--warn)}
.timer.warn .timer-num{color:var(--warn)}
.timer.crit .timer-fill{stroke:var(--bad)}
.timer.crit .timer-num{color:var(--bad)}
.timer.crit{animation:timerPulse 480ms var(--ease-in-out) infinite}
@keyframes timerPulse{0%,100%{transform:scale(1)}50%{transform:scale(1.09)}}
.timer.frozen .timer-fill{stroke:#8fd8ff;filter:drop-shadow(0 0 16px #8fd8ff)}
.timer.frozen::after{
  content:'FROZEN';position:absolute;top:-15px;font-size:9px;letter-spacing:.2em;color:#8fd8ff;
}
.timer.hidden-clock{opacity:.28}

.score-block{display:flex;flex-direction:column;align-items:flex-end;line-height:1}
.score-label{font-size:9.5px;letter-spacing:.24em;color:var(--ink-soft)}
.score-value{
  font-family:var(--f-mono);font-size:clamp(26px,3.5vw,42px);font-weight:600;
  font-variant-numeric:tabular-nums;letter-spacing:-.03em;
  text-shadow:0 0 26px rgba(var(--glow),.45);
  transition:transform 200ms var(--ease-back),color 200ms;
}
.score-value.bump{transform:scale(1.14);color:var(--accent-2)}
.score-best{font-size:10px;letter-spacing:.14em;color:var(--ink-soft);margin-top:3px;font-family:var(--f-mono);text-shadow:0 1px 8px rgba(0,0,0,.95)}
.tier-chip,.topic-chip{
  font-size:10px;letter-spacing:.16em;padding:3px 9px;border-radius:100px;
  border:1px solid var(--panel-line);background:var(--panel);
  color:var(--ink-soft);
}
.topic-chip{font-family:var(--f-mono);letter-spacing:.03em;text-transform:none;color:var(--ink-faint)}
.tier-chip[data-tier="2"]{color:var(--warn);border-color:rgba(255,181,71,.4)}
.tier-chip[data-tier="3"]{color:var(--bad);border-color:rgba(255,93,108,.45);box-shadow:0 0 18px rgba(255,93,108,.2)}

/* combo */
.combo{display:flex;flex-direction:column;align-items:center;gap:5px;min-width:clamp(150px,22vw,260px)}
.combo-mult{
  font-family:var(--f-mono);font-weight:650;font-size:clamp(16px,2.1vw,24px);letter-spacing:-.01em;
  color:var(--ink);transition:color 200ms,transform 240ms var(--ease-back),text-shadow 200ms;
  text-shadow:0 1px 10px rgba(0,0,0,.9);
}
.combo-mult.hot{color:var(--accent-2);text-shadow:0 0 22px rgba(255,200,87,.7)}
.combo-mult.pop{transform:scale(1.28)}
.combo-bar{width:100%;height:5px;border-radius:3px;background:rgba(255,255,255,.10);overflow:hidden}
.combo-fill{
  height:100%;width:0%;border-radius:3px;
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  box-shadow:0 0 14px rgba(var(--glow),.6);
  transition:width 380ms var(--ease-out),opacity 200ms;
}
.combo-streak{font-size:9.5px;letter-spacing:.2em;color:var(--ink-soft);text-shadow:0 1px 8px rgba(0,0,0,.95)}

/* wager */
.wager{
  display:flex;flex-direction:column;align-items:flex-start;gap:1px;
  padding:8px 13px;border-radius:var(--r-md);cursor:pointer;
  background:var(--panel);border:1px solid var(--panel-line);
  transition:all var(--t-fast) var(--ease-out);text-align:left;
}
.wager:hover:not(:disabled){border-color:var(--panel-line-hot);transform:translateY(-2px)}
.wager:disabled{opacity:.32;cursor:not-allowed}
.wager[aria-pressed="true"]{
  border-color:var(--accent-2);background:rgba(255,200,87,.14);
  box-shadow:0 0 30px rgba(255,200,87,.3), inset 0 0 22px rgba(255,200,87,.1);
  animation:wagerBreathe 1.5s var(--ease-in-out) infinite;
}
@keyframes wagerBreathe{0%,100%{box-shadow:0 0 26px rgba(255,200,87,.24)}50%{box-shadow:0 0 44px rgba(255,200,87,.5)}}
.wager-key{
  font-family:var(--f-mono);font-size:9px;padding:1px 5px;border-radius:3px;
  background:rgba(255,255,255,.10);letter-spacing:.06em;
}
.wager-text{font-size:12px;font-weight:650;letter-spacing:.14em}
.wager-sub{font-size:9.5px;color:var(--ink-soft);letter-spacing:.05em}

/* power-ups */
.powerups{display:flex;gap:7px;flex-wrap:wrap;justify-content:flex-end}
.pu{
  position:relative;display:flex;flex-direction:column;align-items:center;gap:2px;
  width:clamp(52px,6.4vw,66px);padding:7px 4px 5px;border-radius:var(--r-md);cursor:pointer;
  background:var(--panel);border:1px solid var(--panel-line);
  transition:all var(--t-fast) var(--ease-out);
}
.pu:hover:not(:disabled){transform:translateY(-3px);border-color:var(--panel-line-hot);background:rgba(var(--glow),.10)}
.pu:disabled{opacity:.3;cursor:not-allowed}
.pu-icon{width:20px;height:20px;stroke:var(--accent);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.pu-name{font-size:8.5px;letter-spacing:.1em;color:var(--ink-soft);text-shadow:0 1px 6px rgba(0,0,0,.9)}
.pu-count{
  position:absolute;top:-6px;right:-5px;min-width:17px;height:17px;padding:0 4px;
  display:grid;place-items:center;border-radius:9px;
  background:var(--accent);color:#04070d;font-family:var(--f-mono);font-size:10px;font-weight:700;
  box-shadow:0 0 12px rgba(var(--glow),.7);
}
.pu.used{animation:puUse 520ms var(--ease-out)}
@keyframes puUse{0%{transform:scale(1)}30%{transform:scale(1.3);filter:brightness(2)}100%{transform:scale(1)}}
.pu-key{position:absolute;bottom:-13px;font-family:var(--f-mono);font-size:9px;color:var(--ink-soft);text-shadow:0 1px 6px rgba(0,0,0,.95)}

.hint{
  font-size:11.5px;color:var(--ink-soft);letter-spacing:.04em;text-align:right;
  text-shadow:0 1px 8px rgba(0,0,0,.95);
  max-width:min(60vw,340px);margin-top:14px;min-height:1.2em;
  transition:opacity var(--t-med);
}
.hint kbd{font-size:9.5px}

.pause-btn{
  position:absolute;left:var(--hud-pad);
  bottom:calc(var(--hud-pad) + env(safe-area-inset-bottom,0px) + 62px);
  display:none;width:42px;height:42px;border-radius:50%;place-items:center;cursor:pointer;
  background:var(--panel);border:1px solid var(--panel-line);
}
.pause-btn svg{width:16px;height:16px;fill:var(--ink-soft)}

/* floating score numbers */
.float-layer{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.float-num{
  position:absolute;transform:translate(-50%,-50%);
  font-family:var(--f-mono);font-weight:700;font-size:clamp(18px,2.6vw,32px);
  letter-spacing:-.02em;white-space:nowrap;
  text-shadow:0 2px 20px rgba(0,0,0,.8);
  animation:floatUp 1150ms var(--ease-out) forwards;
}
.float-num.good{color:var(--accent-2)}
.float-num.bad{color:var(--bad)}
.float-num.part{color:var(--partial)}
.float-num.info{color:var(--accent);font-size:clamp(13px,1.7vw,19px)}
@keyframes floatUp{
  0%{opacity:0;transform:translate(-50%,-30%) scale(.6)}
  16%{opacity:1;transform:translate(-50%,-58%) scale(1.16)}
  30%{transform:translate(-50%,-64%) scale(1)}
  100%{opacity:0;transform:translate(-50%,-190%) scale(.94)}
}

/* toasts (achievements, power-up gain) */
.toasts{
  position:absolute;left:50%;top:clamp(96px,15vh,170px);transform:translateX(-50%);
  display:flex;flex-direction:column;gap:8px;align-items:center;pointer-events:none;width:max-content;max-width:92vw;
}
.toast{
  display:flex;align-items:center;gap:11px;padding:9px 17px 9px 12px;border-radius:100px;
  background:linear-gradient(100deg,rgba(10,15,26,.94),rgba(16,24,40,.92));
  border:1px solid var(--panel-line-hot);
  box-shadow:0 12px 44px rgba(0,0,0,.6), 0 0 34px rgba(var(--glow),.20);
  animation:toastIn 420ms var(--ease-back) forwards, toastOut 380ms var(--ease-in-out) 3.2s forwards;
}
.toast-ico{
  width:26px;height:26px;flex:none;display:grid;place-items:center;border-radius:50%;
  background:rgba(var(--glow),.18);color:var(--accent);font-size:13px;
}
.toast-t{font-size:12px;font-weight:650;letter-spacing:.1em}
.toast-s{font-size:10.5px;color:var(--ink-faint);letter-spacing:.02em}
.toast.gold{border-color:rgba(255,200,87,.55)}
.toast.gold .toast-ico{background:rgba(255,200,87,.2);color:var(--accent-2)}
@keyframes toastIn{from{opacity:0;transform:translateY(-16px) scale(.9)}to{opacity:1;transform:none}}
@keyframes toastOut{to{opacity:0;transform:translateY(-12px) scale(.97)}}

/* ============================================================
   SCREENS
   ============================================================ */
#screens{position:absolute;inset:0;z-index:10;pointer-events:none}
.screen{
  position:absolute;inset:0;z-index:1;
  display:flex;flex-direction:column;
  padding:calc(clamp(18px,3.6vh,44px) + env(safe-area-inset-top,0px)) clamp(16px,4vw,64px) calc(clamp(18px,3.6vh,44px) + env(safe-area-inset-bottom,0px));
  overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;
  pointer-events:auto;
  background:radial-gradient(130% 100% at 50% 40%, rgba(4,6,12,.93), rgba(2,4,8,.985) 72%);

  animation:screenIn 420ms var(--ease-out);
}
.screen[hidden]{display:none}
.screen.leaving{animation:screenOut 240ms var(--ease-in-out) forwards;pointer-events:none}
@keyframes screenIn{from{opacity:0;transform:scale(1.02)}to{opacity:1;transform:none}}
@keyframes screenOut{to{opacity:0;transform:scale(.985)}}

/* screens that must not dim the arena */
.screen-explain,.screen-zone,.screen-clear,.screen-over{
  background:radial-gradient(122% 92% at 50% 50%, transparent 20%, rgba(3,5,10,.68) 88%);
}

.screen-head{display:flex;flex-direction:column;gap:5px;margin-bottom:clamp(16px,3vh,32px);position:relative;flex:none}
.screen-head h2{
  margin:0;font-size:clamp(20px,3.4vw,34px);font-weight:200;letter-spacing:.28em;
  text-transform:uppercase;
}
.screen-sub{margin:0;color:var(--ink-faint);font-size:13px;max-width:62ch}
.back{
  position:absolute;right:0;top:-4px;width:40px;height:40px;border-radius:50%;
  background:var(--panel);border:1px solid var(--panel-line);cursor:pointer;
  display:grid;place-items:center;font-size:17px;color:var(--ink-soft);
  transition:all var(--t-fast) var(--ease-out);
}
.back:hover{border-color:var(--panel-line-hot);color:var(--ink);transform:translateX(-3px)}
.screen-foot{margin-top:auto;padding-top:clamp(14px,2.4vh,26px);flex:none}

/* buttons */
.btn{
  position:relative;display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:12px 24px;min-height:46px;border-radius:var(--r-md);cursor:pointer;
  background:rgba(255,255,255,.035);
  border:1px solid var(--panel-line);
  color:var(--ink-soft);
  font-size:12.5px;font-weight:600;letter-spacing:.18em;text-transform:uppercase;
  transition:all var(--t-fast) var(--ease-out);
  -webkit-tap-highlight-color:transparent;
}
.btn:hover:not(:disabled),.btn:focus-visible{
  color:var(--ink);border-color:var(--panel-line-hot);background:rgba(var(--glow),.10);
  transform:translateY(-2px);
}
.btn:active:not(:disabled){transform:translateY(0) scale(.985)}
.btn:disabled{opacity:.35;cursor:not-allowed}
.btn-primary{
  color:#04070f;background:linear-gradient(120deg,var(--accent),#bff3ff);
  border-color:transparent;box-shadow:0 8px 34px rgba(var(--glow),.34);
}
.btn-primary:hover:not(:disabled),.btn-primary:focus-visible{
  color:#04070f;background:linear-gradient(120deg,#8df1ff,#ffffff);
  box-shadow:0 12px 46px rgba(var(--glow),.55);
}
.btn-primary .btn-key{background:rgba(0,0,0,.20);color:rgba(0,0,0,.72)}
.btn-danger{color:var(--bad);border-color:rgba(255,93,108,.35)}
.btn-danger:hover{background:rgba(255,93,108,.12);border-color:var(--bad);color:#fff}
.btn-quiet{opacity:.55;font-size:10.5px;padding:12px 16px;min-height:42px}
.btn-key{
  font-family:var(--f-mono);font-size:9px;padding:2px 6px;border-radius:4px;
  background:rgba(255,255,255,.09);letter-spacing:.06em;font-weight:500;
}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.kb-focus{outline:2px solid var(--accent);outline-offset:4px}

/* ---------------- BOOT ---------------- */
.screen-boot{align-items:center;justify-content:center;background:var(--bg);flex-direction:column;align-items:center;gap:18px}
.boot-mark{
  width:64px;height:64px;border-radius:50%;
  border:2px solid rgba(var(--glow),.28);border-top-color:var(--accent);
  animation:spin 900ms linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.boot-bar{width:min(260px,60vw);height:2px;background:rgba(255,255,255,.10);border-radius:2px;overflow:hidden}
.boot-bar i{display:block;height:100%;width:0;background:var(--accent);box-shadow:0 0 12px var(--accent);transition:width 300ms var(--ease-out)}
.boot-text{margin:0;font-family:var(--f-mono);font-size:11px;letter-spacing:.2em;color:var(--ink-faint);text-transform:uppercase}

/* ---------------- TITLE ---------------- */
.screen-title{
  align-items:flex-start;justify-content:center;
  background:linear-gradient(100deg, rgba(3,5,10,.80) 0%, rgba(4,6,12,.42) 46%, transparent 72%);

}
.title-stack{max-width:min(640px,92vw);display:flex;flex-direction:column;gap:clamp(10px,1.7vh,20px)}
.eyebrow{
  margin:0;font-size:clamp(9.5px,1.1vw,11.5px);letter-spacing:.34em;text-transform:uppercase;
  color:var(--accent);opacity:.9;
  animation:riseIn 700ms var(--ease-out) both;
}
.wordmark{
  margin:0;display:flex;flex-direction:column;line-height:.82;
  font-weight:200;letter-spacing:-.02em;
  font-size:clamp(52px,11.5vw,132px);
}
.wordmark .w1{
  animation:riseIn 760ms 60ms var(--ease-out) both;
  background:linear-gradient(96deg,#ffffff 8%,var(--accent) 92%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.wordmark .w2{
  font-weight:700;letter-spacing:.02em;
  animation:riseIn 760ms 130ms var(--ease-out) both;
  background:linear-gradient(96deg,var(--accent-2) 4%,#fff 62%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
  text-shadow:0 0 60px rgba(255,200,87,.18);
}
@keyframes riseIn{from{opacity:0;transform:translateY(26px)}to{opacity:1;transform:none}}
.tagline{
  margin:0;color:var(--ink-soft);font-size:clamp(13px,1.5vw,17px);max-width:44ch;
  animation:riseIn 760ms 210ms var(--ease-out) both;
}
.title-actions{
  display:flex;flex-wrap:wrap;gap:9px;margin-top:6px;
  animation:riseIn 760ms 290ms var(--ease-out) both;
}
.title-stats{
  display:flex;flex-wrap:wrap;gap:clamp(14px,2.4vw,30px);margin-top:6px;
  animation:riseIn 760ms 360ms var(--ease-out) both;
}
.tstat{display:flex;flex-direction:column;gap:1px}
.tstat b{font-family:var(--f-mono);font-size:clamp(15px,1.9vw,21px);font-weight:600;color:var(--ink)}
.tstat span{font-size:9px;letter-spacing:.2em;color:var(--ink-faint);text-transform:uppercase}
.title-foot{
  margin:6px 0 0;font-size:11px;color:var(--ink-faint);
  animation:riseIn 760ms 430ms var(--ease-out) both;
}

/* ---------------- CARD GRID (modes) ---------------- */
.card-grid{display:grid;gap:clamp(10px,1.6vw,16px);grid-template-columns:repeat(auto-fit,minmax(min(258px,100%),1fr))}
.mode-card{
  position:relative;display:flex;flex-direction:column;gap:8px;text-align:left;
  padding:clamp(16px,2.2vw,24px);border-radius:var(--r-lg);cursor:pointer;
  background:linear-gradient(155deg,rgba(16,23,38,.92),rgba(8,12,21,.94));
  border:1px solid var(--panel-line);overflow:hidden;
  transition:all var(--t-med) var(--ease-out);
  min-height:150px;
}
.mode-card::after{
  content:'';position:absolute;inset:0;opacity:0;pointer-events:none;
  background:radial-gradient(90% 70% at 20% 0%, rgba(var(--glow),.20), transparent 68%);
  transition:opacity var(--t-med);
}
.mode-card:hover,.mode-card:focus-visible{transform:translateY(-5px);border-color:var(--panel-line-hot);box-shadow:0 20px 54px rgba(0,0,0,.5)}
.mode-card:hover::after,.mode-card:focus-visible::after{opacity:1}
.mode-card:disabled{opacity:.4;cursor:not-allowed;transform:none}
.mode-ico{width:26px;height:26px;stroke:var(--accent);fill:none;stroke-width:1.5;stroke-linecap:round;stroke-linejoin:round}
.mode-name{font-size:clamp(15px,1.9vw,20px);font-weight:650;letter-spacing:.12em;text-transform:uppercase}
.mode-desc{font-size:12.5px;color:var(--ink-soft);line-height:1.5;margin:0}
.mode-meta{margin-top:auto;display:flex;gap:8px;flex-wrap:wrap;font-family:var(--f-mono);font-size:10px;color:var(--ink-faint)}
.mode-meta span{padding:2px 7px;border-radius:4px;background:rgba(255,255,255,.05)}
.mode-best{position:absolute;top:14px;right:16px;font-family:var(--f-mono);font-size:10px;color:var(--accent-2);letter-spacing:.08em}

.diff-picker{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.diff-label{font-size:9.5px;letter-spacing:.24em;color:var(--ink-faint);margin-right:4px}
.diff-opt{
  padding:11px 18px;min-height:42px;border-radius:100px;cursor:pointer;font-size:11px;letter-spacing:.14em;
  background:transparent;border:1px solid var(--panel-line);color:var(--ink-faint);
  transition:all var(--t-fast) var(--ease-out);text-transform:uppercase;
}
.diff-opt[aria-checked="true"]{background:rgba(var(--glow),.16);border-color:var(--accent);color:var(--ink)}
.diff-note{font-size:10.5px;color:var(--ink-faint);flex-basis:100%;margin-top:6px;font-family:var(--f-mono)}

/* ---------------- TOPICS ---------------- */
.topic-grid{display:grid;gap:8px;grid-template-columns:repeat(auto-fill,minmax(min(178px,100%),1fr));align-content:start}
.topic-chip-btn{
  display:flex;align-items:center;justify-content:space-between;gap:8px;
  padding:11px 14px;border-radius:var(--r-md);cursor:pointer;text-align:left;
  background:linear-gradient(160deg,rgba(13,18,30,.9),rgba(8,12,20,.92));border:1px solid var(--panel-line);
  transition:all var(--t-fast) var(--ease-out);min-height:48px;
}
.topic-chip-btn:hover{border-color:var(--panel-line-hot);background:rgba(var(--glow),.08)}
.topic-chip-btn[aria-pressed="true"]{background:rgba(var(--glow),.15);border-color:var(--accent);color:var(--ink)}
.topic-chip-btn[aria-pressed="true"] .tc-n{color:var(--accent)}
.tc-label{font-size:12px;letter-spacing:.02em;font-family:var(--f-mono)}
.tc-n{font-family:var(--f-mono);font-size:10.5px;color:var(--ink-faint)}
.topic-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.topic-count{font-family:var(--f-mono);font-size:12px;color:var(--ink-soft)}
.foot-actions{display:flex;gap:8px;flex-wrap:wrap}

/* ---------------- MAP ---------------- */
.map-grid{display:grid;gap:clamp(10px,1.5vw,14px);grid-template-columns:repeat(auto-fit,minmax(min(210px,100%),1fr))}
.map-card{
  position:relative;padding:clamp(14px,2vw,20px);border-radius:var(--r-lg);text-align:left;
  border:1px solid var(--panel-line);cursor:pointer;overflow:hidden;min-height:132px;
  display:flex;flex-direction:column;gap:6px;
  transition:all var(--t-med) var(--ease-out);
}
.map-card:hover:not(:disabled){transform:translateY(-4px)}
.map-card:disabled{cursor:not-allowed}
.map-card .mc-i{font-family:var(--f-mono);font-size:11px;opacity:.7}
.map-card .mc-n{font-size:15px;font-weight:650;letter-spacing:.14em;text-transform:uppercase}
.map-card .mc-d{font-size:11.5px;color:var(--ink-soft);line-height:1.45}
.map-card .mc-m{margin-top:auto;font-family:var(--f-mono);font-size:10px;color:var(--ink-faint)}
.map-card.locked{opacity:.42}
.map-card.locked .mc-lock{position:absolute;top:14px;right:14px;font-size:15px;opacity:.65}
.map-card.cleared::before{
  content:'CLEARED';position:absolute;top:13px;right:13px;font-size:8.5px;letter-spacing:.18em;
  color:var(--good);border:1px solid rgba(94,242,168,.45);padding:2px 6px;border-radius:4px;
}

/* ---------------- ZONE INTRO ---------------- */
.screen-zone{align-items:center;justify-content:center}
.zone-card{
  max-width:min(560px,92vw);text-align:center;display:flex;flex-direction:column;gap:12px;align-items:center;
  padding:clamp(24px,4vw,44px);border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(9,13,23,.97),rgba(5,8,15,.99));border:1px solid var(--panel-line-hot);

  box-shadow:0 30px 90px rgba(0,0,0,.6), 0 0 70px rgba(var(--glow),.16);
  animation:zoneCardIn 620ms var(--ease-back);
}
@keyframes zoneCardIn{from{opacity:0;transform:translateY(30px) scale(.94)}to{opacity:1;transform:none}}
.zone-num{font-family:var(--f-mono);font-size:11px;letter-spacing:.34em;color:var(--accent)}
.zone-title{
  margin:0;font-size:clamp(26px,5.2vw,50px);font-weight:200;letter-spacing:.16em;text-transform:uppercase;
  text-shadow:0 0 46px rgba(var(--glow),.4);
}
.zone-desc{margin:0;color:var(--ink-soft);font-size:14px;max-width:46ch;line-height:1.6}
.zone-meta{
  display:flex;gap:clamp(12px,2.4vw,26px);list-style:none;padding:0;margin:8px 0 4px;flex-wrap:wrap;justify-content:center;
}
.zone-meta li{display:flex;flex-direction:column;gap:2px}
.zone-meta b{font-family:var(--f-mono);font-size:17px;color:var(--ink)}
.zone-meta span{font-size:8.5px;letter-spacing:.2em;color:var(--ink-faint);text-transform:uppercase}
.zone-go{margin-top:8px}

/* ---------------- EXPLAIN ---------------- */
.screen-explain{align-items:center;justify-content:flex-end;padding-bottom:clamp(24px,6vh,70px)}
.explain-card{
  position:relative;width:min(660px,94vw);
  padding:clamp(16px,2.4vw,26px) clamp(18px,2.6vw,30px) clamp(14px,2vw,22px);
  border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(9,13,23,.95),rgba(6,9,17,.97));
  border:1px solid var(--panel-line);
  box-shadow:0 30px 90px rgba(0,0,0,.7);
  animation:explainIn 420ms var(--ease-back);
  display:flex;flex-direction:column;gap:9px;overflow:hidden;
}
@keyframes explainIn{from{opacity:0;transform:translateY(40px)}to{opacity:1;transform:none}}
.explain-card.correct{border-color:rgba(94,242,168,.5);box-shadow:0 30px 90px rgba(0,0,0,.7),0 0 60px rgba(94,242,168,.16)}
.explain-card.wrong{border-color:rgba(255,93,108,.5);box-shadow:0 30px 90px rgba(0,0,0,.7),0 0 60px rgba(255,93,108,.16)}
.explain-card.partial{border-color:rgba(201,164,255,.5)}
.explain-verdict{font-size:12px;font-weight:700;letter-spacing:.3em;text-transform:uppercase}
.explain-card.correct .explain-verdict{color:var(--good)}
.explain-card.wrong .explain-verdict{color:var(--bad)}
.explain-card.partial .explain-verdict{color:var(--partial)}
.explain-award{
  position:absolute;top:clamp(14px,2.2vw,24px);right:clamp(16px,2.4vw,28px);
  font-family:var(--f-mono);font-size:clamp(15px,2vw,21px);font-weight:650;color:var(--accent-2);
}
.explain-q{margin:0;font-size:13.5px;color:var(--ink);line-height:1.5;font-weight:500}
.explain-a{margin:0;font-size:12.5px;font-family:var(--f-mono);color:var(--good);line-height:1.5}
.explain-a .lbl{color:var(--ink-faint);font-family:var(--f-ui);letter-spacing:.14em;font-size:9.5px;display:block;margin-bottom:2px}
.explain-body{margin:0;font-size:13px;color:var(--ink-soft);line-height:1.62}
.explain-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:4px;flex-wrap:wrap}
.explain-topic{font-family:var(--f-mono);font-size:10px;color:var(--ink-faint);letter-spacing:.06em}
.explain-timer{position:absolute;left:0;bottom:0;height:2px;width:100%;background:rgba(255,255,255,.06)}
.explain-timer i{display:block;height:100%;width:100%;background:var(--accent);transform-origin:left;opacity:.55}

/* ---------------- STAGE CLEAR ---------------- */
.screen-clear{align-items:center;justify-content:center}
.clear-card{
  width:min(520px,92vw);text-align:center;padding:clamp(22px,3.6vw,40px);border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(9,13,23,.97),rgba(5,8,15,.99));border:1px solid var(--panel-line-hot);
  display:flex;flex-direction:column;gap:14px;align-items:center;
  box-shadow:0 30px 90px rgba(0,0,0,.6),0 0 80px rgba(var(--glow),.14);
  animation:zoneCardIn 560ms var(--ease-back);
}
.clear-kicker{font-size:10.5px;letter-spacing:.34em;color:var(--accent)}
.clear-title{margin:0;font-size:clamp(21px,3.6vw,34px);font-weight:200;letter-spacing:.16em;text-transform:uppercase}
.clear-rows{display:flex;flex-direction:column;gap:7px;width:100%;max-width:340px}
.crow{
  display:flex;justify-content:space-between;align-items:baseline;gap:12px;
  font-size:12px;padding-bottom:6px;border-bottom:1px solid rgba(255,255,255,.06);
  animation:riseIn 380ms var(--ease-out) both;
}
.crow span{color:var(--ink-faint);letter-spacing:.1em;text-transform:uppercase;font-size:10px}
.crow b{font-family:var(--f-mono);font-size:15px;font-weight:600}
.crow.total b{color:var(--accent-2);font-size:19px}
.clear-rewards{display:flex;gap:9px;flex-wrap:wrap;justify-content:center}
.reward{
  display:flex;align-items:center;gap:6px;padding:6px 12px;border-radius:100px;font-size:10.5px;
  background:rgba(var(--glow),.13);border:1px solid var(--panel-line-hot);letter-spacing:.08em;
  animation:riseIn 440ms var(--ease-back) both;
}

/* ---------------- PAUSE ---------------- */
.screen-pause{align-items:center;justify-content:center}
.pause-card{
  width:min(400px,92vw);text-align:center;padding:clamp(24px,3.6vw,40px);border-radius:var(--r-lg);
  background:linear-gradient(180deg,rgba(9,13,23,.97),rgba(5,8,15,.99));border:1px solid var(--panel-line);
  display:flex;flex-direction:column;gap:18px;
}
.pause-card h2{margin:0;font-size:26px;font-weight:200;letter-spacing:.34em}
.pause-stats{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}
.pstat{display:flex;flex-direction:column;gap:2px}
.pstat b{font-family:var(--f-mono);font-size:19px}
.pstat span{font-size:8.5px;letter-spacing:.18em;color:var(--ink-faint)}
.pause-actions{display:flex;flex-direction:column;gap:8px}

/* ---------------- RESULTS ---------------- */
.results-wrap{width:min(880px,100%);margin:0 auto;display:flex;flex-direction:column;gap:clamp(14px,2.4vh,26px)}
.results-head{text-align:center;display:flex;flex-direction:column;gap:3px}
.results-kicker{font-size:11px;letter-spacing:.34em;color:var(--ink-faint);text-transform:uppercase}
.results-score{
  font-family:var(--f-mono);font-size:clamp(46px,10vw,96px);font-weight:600;line-height:1;
  letter-spacing:-.04em;font-variant-numeric:tabular-nums;
  background:linear-gradient(100deg,#fff,var(--accent-2));
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.results-sub{font-size:12.5px;color:var(--ink-soft)}
.results-newbest{
  align-self:center;margin-top:5px;padding:5px 15px;border-radius:100px;
  font-size:10px;letter-spacing:.26em;color:#04070d;background:var(--accent-2);
  animation:pbPulse 1.3s var(--ease-in-out) infinite;
}
@keyframes pbPulse{0%,100%{box-shadow:0 0 0 0 rgba(255,200,87,.5)}60%{box-shadow:0 0 0 14px rgba(255,200,87,0)}}
.results-grid{display:grid;gap:9px;grid-template-columns:repeat(auto-fit,minmax(110px,1fr))}
.rstat{
  padding:12px 14px;border-radius:var(--r-md);text-align:left;
  background:linear-gradient(160deg,rgba(14,20,33,.92),rgba(8,12,21,.94));border:1px solid var(--panel-line);
  animation:riseIn 420ms var(--ease-out) both;
}
.rstat b{display:block;font-family:var(--f-mono);font-size:clamp(17px,2.3vw,24px);font-weight:600}
.rstat span{font-size:8.5px;letter-spacing:.18em;color:var(--ink-faint);text-transform:uppercase}
.rstat.hi b{color:var(--accent-2)}
.results-badges{display:flex;gap:8px;flex-wrap:wrap}
.results-review{display:flex;flex-direction:column;gap:8px}
.review-head{
  font-size:10px;letter-spacing:.24em;color:var(--ink-faint);text-transform:uppercase;
  display:flex;justify-content:space-between;align-items:center;
}
.review-item{
  padding:13px 15px;border-radius:var(--r-md);
  background:linear-gradient(160deg,rgba(30,12,17,.94),rgba(12,8,13,.95));border:1px solid rgba(255,93,108,.3);
  display:flex;flex-direction:column;gap:5px;
}
.review-item.timeout{background:linear-gradient(160deg,rgba(30,22,10,.94),rgba(12,10,8,.95));border-color:rgba(255,181,71,.3)}
.review-item.partial{background:linear-gradient(160deg,rgba(24,17,36,.94),rgba(11,9,17,.95));border-color:rgba(201,164,255,.3)}
.review-q{font-size:12.5px;color:var(--ink);line-height:1.45;margin:0}
.review-line{font-size:11.5px;font-family:var(--f-mono);line-height:1.5;margin:0}
.review-line .ok{color:var(--good)}
.review-line .no{color:var(--bad);text-decoration:line-through;text-decoration-color:rgba(255,93,108,.5)}
.review-ex{font-size:12px;color:var(--ink-soft);line-height:1.55;margin:0}
.review-meta{font-size:9.5px;letter-spacing:.14em;color:var(--ink-faint);font-family:var(--f-mono)}
.review-empty{
  padding:22px;border-radius:var(--r-md);text-align:center;font-size:12.5px;color:var(--ink-faint);
  background:rgba(94,242,168,.05);border:1px dashed rgba(94,242,168,.28);
}
.results-name{display:flex;align-items:center;gap:10px;flex-wrap:wrap;justify-content:center}
.results-name label{font-size:9.5px;letter-spacing:.24em;color:var(--ink-faint);text-transform:uppercase}
.results-name input{
  width:110px;padding:10px 14px;border-radius:var(--r-md);text-align:center;
  background:rgba(255,255,255,.05);border:1px solid var(--panel-line);
  font-family:var(--f-mono);font-size:19px;letter-spacing:.3em;text-transform:uppercase;
}
.results-name input:focus{outline:2px solid var(--accent);outline-offset:2px}
.results-actions{display:flex;gap:9px;flex-wrap:wrap;justify-content:center;padding-bottom:8px}

/* ---------------- SCORES ---------------- */
.score-tabs{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:14px}
.score-tab{
  padding:11px 17px;min-height:42px;border-radius:100px;cursor:pointer;font-size:10.5px;letter-spacing:.16em;
  background:transparent;border:1px solid var(--panel-line);color:var(--ink-faint);text-transform:uppercase;
  transition:all var(--t-fast);
}
.score-tab[aria-selected="true"]{background:rgba(var(--glow),.16);border-color:var(--accent);color:var(--ink)}
.score-table{display:flex;flex-direction:column;gap:4px;min-height:120px}
.srow{
  display:grid;grid-template-columns:34px 1fr auto auto;gap:12px;align-items:center;
  padding:12px 14px;border-radius:var(--r-sm);font-family:var(--f-mono);font-size:12.5px;
  background:rgba(12,17,28,.88);border:1px solid rgba(120,160,210,.10);
  animation:riseIn 340ms var(--ease-out) both;
}
.srow.top{background:rgba(255,200,87,.09);border-color:rgba(255,200,87,.3)}
.srow.fresh{border-color:var(--accent);background:rgba(var(--glow),.14)}
.srow .rk{color:var(--ink-faint)}
.srow.top .rk{color:var(--accent-2)}
.srow .tg{letter-spacing:.2em;font-weight:600}
.srow .sc{font-weight:600;font-variant-numeric:tabular-nums}
.srow .mt{color:var(--ink-faint);font-size:10px;letter-spacing:.06em;text-align:right}
.empty-state{
  padding:34px 22px;border-radius:var(--r-lg);text-align:center;
  border:1px dashed var(--panel-line);color:var(--ink-faint);
  display:flex;flex-direction:column;gap:9px;align-items:center;
}
.empty-state .es-ico{font-size:26px;opacity:.5}
.empty-state .es-t{font-size:13px;color:var(--ink-soft);letter-spacing:.12em;text-transform:uppercase}
.empty-state .es-s{font-size:12px;max-width:38ch;line-height:1.55}
.lifetime{display:grid;gap:9px;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));margin-top:18px}

/* ---------------- BADGES ---------------- */
.badge-grid{display:grid;gap:9px;grid-template-columns:repeat(auto-fill,minmax(min(232px,100%),1fr));align-content:start}
.badge{
  display:flex;gap:12px;padding:13px 15px;border-radius:var(--r-md);align-items:flex-start;
  background:linear-gradient(160deg,rgba(13,18,30,.9),rgba(8,12,20,.92));border:1px solid var(--panel-line);
  transition:all var(--t-med) var(--ease-out);
}
.badge.got{background:rgba(255,200,87,.075);border-color:rgba(255,200,87,.34)}
.badge.got .badge-ico{background:rgba(255,200,87,.2);color:var(--accent-2);box-shadow:0 0 22px rgba(255,200,87,.28)}
.badge-ico{
  width:34px;height:34px;flex:none;border-radius:10px;display:grid;place-items:center;font-size:16px;
  background:rgba(255,255,255,.05);color:var(--ink-faint);
}
.badge-txt{display:flex;flex-direction:column;gap:2px;min-width:0}
.badge-n{font-size:12px;font-weight:650;letter-spacing:.1em;text-transform:uppercase}
.badge-d{font-size:11px;color:var(--ink-faint);line-height:1.42}
.badge.locked .badge-n{color:var(--ink-faint)}
.badge-prog{margin-top:4px;height:3px;border-radius:2px;background:rgba(255,255,255,.08);overflow:hidden}
.badge-prog i{display:block;height:100%;background:var(--accent);border-radius:2px}

/* ---------------- SETTINGS ---------------- */
.settings-list{display:flex;flex-direction:column;gap:5px;max-width:620px;width:100%}
.set-group{font-size:9.5px;letter-spacing:.26em;color:var(--ink-faint);text-transform:uppercase;margin:16px 0 4px}
.set-row{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:13px 16px;border-radius:var(--r-md);
  background:linear-gradient(160deg,rgba(13,18,30,.9),rgba(8,12,20,.92));border:1px solid var(--panel-line);
}
.set-txt{display:flex;flex-direction:column;gap:2px;min-width:0}
.set-n{font-size:12.5px;letter-spacing:.06em}
.set-d{font-size:11px;color:var(--ink-faint);line-height:1.4}
.set-ctl{flex:none;display:flex;align-items:center;gap:9px}
.switch{
  position:relative;width:74px;height:42px;border-radius:100px;cursor:pointer;flex:none;
  background:rgba(255,255,255,.10);border:1px solid var(--panel-line);transition:all var(--t-fast);
}
.switch::after{
  content:'';position:absolute;top:4px;left:4px;width:32px;height:32px;border-radius:50%;
  background:var(--ink-faint);transition:all 200ms var(--ease-back);
}
.switch[aria-checked="true"]{background:rgba(var(--glow),.32);border-color:var(--accent)}
.switch[aria-checked="true"]::after{left:38px;background:var(--accent);box-shadow:0 0 12px var(--accent)}
/* the whole control is 42px tall so it is a real touch target; the visible
   track is drawn by the runnable-track pseudo element */
.slider{
  -webkit-appearance:none;appearance:none;width:clamp(110px,20vw,160px);height:42px;
  background:transparent;cursor:pointer;
}
.slider::-webkit-slider-runnable-track{height:4px;border-radius:3px;background:rgba(255,255,255,.15)}
.slider::-moz-range-track{height:4px;border-radius:3px;background:rgba(255,255,255,.15)}
.slider::-webkit-slider-thumb{
  -webkit-appearance:none;width:22px;height:22px;border-radius:50%;background:var(--accent);
  box-shadow:0 0 12px rgba(var(--glow),.8);cursor:pointer;margin-top:-9px;
}
.slider::-moz-range-thumb{
  width:22px;height:22px;border:0;border-radius:50%;background:var(--accent);
  box-shadow:0 0 12px rgba(var(--glow),.8);cursor:pointer;
}
.set-val{font-family:var(--f-mono);font-size:11px;color:var(--ink-faint);width:34px;text-align:right}
.seg{display:flex;gap:4px}
.seg button{
  padding:11px 14px;min-height:42px;border-radius:8px;cursor:pointer;font-size:10.5px;letter-spacing:.1em;
  background:transparent;border:1px solid var(--panel-line);color:var(--ink-faint);text-transform:uppercase;
}
.seg button[aria-checked="true"]{background:rgba(var(--glow),.16);border-color:var(--accent);color:var(--ink)}

/* ---------------- TUTORIAL ---------------- */
.tut-body{display:grid;gap:10px;grid-template-columns:repeat(auto-fit,minmax(min(268px,100%),1fr));align-content:start}
.tut-card{
  padding:clamp(14px,2vw,20px);border-radius:var(--r-lg);
  background:linear-gradient(160deg,rgba(13,18,30,.9),rgba(8,12,20,.92));border:1px solid var(--panel-line);
  display:flex;flex-direction:column;gap:8px;
}
.tut-card h3{margin:0;font-size:13px;letter-spacing:.16em;text-transform:uppercase;color:var(--accent)}
.tut-card p{margin:0;font-size:12.5px;color:var(--ink-soft);line-height:1.55}
.tut-keys{display:flex;gap:5px;flex-wrap:wrap;margin-top:2px}
.tut-shape{font-family:var(--f-mono);font-size:10px;color:var(--ink-faint);letter-spacing:.08em}

/* coach marks during tutorial play */
.coach{
  position:absolute;left:50%;bottom:clamp(96px,17vh,180px);transform:translateX(-50%);
  z-index:11;pointer-events:none;max-width:min(560px,92vw);
}
.coach-inner{
  padding:11px 20px;border-radius:100px;text-align:center;
  background:linear-gradient(100deg,rgba(10,15,26,.95),rgba(16,24,40,.93));
  border:1px solid var(--panel-line-hot);
  font-size:12.5px;color:var(--ink);letter-spacing:.03em;
  box-shadow:0 14px 46px rgba(0,0,0,.6);
  animation:coachIn 420ms var(--ease-back);
}
@keyframes coachIn{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}

/* ---------------- GAME OVER / FATAL ---------------- */
.screen-over{align-items:center;justify-content:center;pointer-events:none}
.over-card{text-align:center;animation:overIn 900ms var(--ease-out)}
.over-title{
  margin:0;font-size:clamp(34px,8vw,84px);font-weight:200;letter-spacing:.28em;
  color:var(--bad);text-shadow:0 0 70px rgba(255,93,108,.55);
}
.over-sub{margin:10px 0 0;font-size:13px;letter-spacing:.2em;color:var(--ink-faint);text-transform:uppercase}
@keyframes overIn{from{opacity:0;letter-spacing:.6em;filter:blur(9px)}to{opacity:1;filter:none}}
.screen-fatal{align-items:center;justify-content:center;background:var(--bg)}
.fatal-card{max-width:480px;text-align:center;display:flex;flex-direction:column;gap:12px}
.fatal-card h2{margin:0;font-size:22px;letter-spacing:.22em;font-weight:300;color:var(--warn)}
.fatal-card p{margin:0;color:var(--ink-soft);font-size:13.5px;line-height:1.6}
.fatal-hint{color:var(--ink-faint)!important;font-size:12px!important}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width:860px){
  .hud-right .topic-chip{display:none}
  .wager-sub{display:none}
  /* the hint stays: on a phone it is the only place the controls are explained.
     It sits above the lifelines and fades once the player has read it. */
  .hint{
    position:absolute;left:var(--hud-pad);right:var(--hud-pad);
    bottom:calc(var(--hud-pad) + env(safe-area-inset-bottom,0px) + 118px);
    margin:0;max-width:none;text-align:center;font-size:11.5px;color:var(--ink-soft);
    transition:opacity 500ms var(--ease-out);pointer-events:none;
  }
}
@media (max-width:640px){
  :root{--hud-pad:11px}
  .hud-top{align-items:flex-start}
  .hud-left{gap:6px}
  .zone-tag{font-size:10px}
  .stage-dots i{width:11px;height:3px}
  .lives i{width:11px;height:11px}
  .timer{width:64px}
  .timer-num{font-size:19px}
  .timer-label{bottom:-14px;font-size:9px}
  .score-value{font-size:24px}
  .tier-chip{font-size:9px;padding:2px 7px}
  .combo{min-width:130px}
  .combo-mult{font-size:15px}
  .wager{padding:7px 10px}
  .wager-text{font-size:10.5px;letter-spacing:.08em}
  .pu{width:46px;padding:6px 3px 4px}
  .pu-icon{width:17px;height:17px}
  .pu-name{font-size:7.5px}
  .pu-key{display:none}
  .pause-btn{display:grid}
  .title-actions .btn{flex:1 1 auto;min-width:132px}
  .title-foot{display:none}
  .screen-title{background:linear-gradient(180deg, rgba(3,5,10,.42) 0%, rgba(3,5,10,.86) 62%)}
  .title-stack{justify-content:flex-end;margin-top:auto}
  .srow{grid-template-columns:26px 1fr auto;font-size:11.5px;padding:9px 11px;gap:8px}
  .srow .mt{display:none}
  .explain-card{width:96vw}
  .results-actions{
    position:sticky;bottom:0;padding:16px 0 10px;
    background:linear-gradient(180deg,rgba(3,5,10,0) 0%,rgba(3,5,10,.97) 30%,rgba(3,5,10,1) 100%);
  }
}
@media (max-width:400px){
  .wordmark{font-size:46px}
  .lives i{width:10px;height:10px}
  .hud-bl{flex:0 1 auto}
}
/* short viewports (landscape phones) */
@media (max-height:520px){
  .timer{width:56px}
  .timer-label{display:none}
  .title-stats{display:none}
  .screen{padding-top:12px;padding-bottom:12px}
  .zone-card{padding:18px 24px;gap:8px}
  .zone-meta{margin:4px 0 0}
}

/* ============================================================
   REDUCED MOTION - the game stays fully playable, the noise goes
   ============================================================ */
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:80ms!important;scroll-behavior:auto!important;
  }
  #grain{display:none}
}
#app[data-motion="reduced"] #grain{display:none}
#app[data-motion="reduced"] .timer.crit{animation:none}
#app[data-motion="reduced"] .timer.crit .timer-num{text-decoration:underline}
#app[data-motion="reduced"] .wager[aria-pressed="true"]{animation:none;outline:2px solid var(--accent-2)}
#app[data-motion="reduced"] .results-newbest{animation:none}
#app[data-motion="reduced"] .float-num{animation-duration:900ms!important;animation-name:floatUpCalm}
@keyframes floatUpCalm{0%{opacity:0}18%{opacity:1}100%{opacity:0;transform:translate(-50%,-130%)}}
#app[data-motion="reduced"] .screen{animation:none}
#app[data-motion="reduced"] .boot-mark{animation:none;border-top-color:var(--accent);border-right-color:var(--accent)}

/* high-contrast preference: strengthen the backing plates */
@media (prefers-contrast:more){
  :root{--panel:rgba(3,5,10,.96);--panel-line:rgba(160,190,225,.5);--ink-soft:#cddaf0;--ink-faint:#9aa8c0}
  .screen{background:rgba(3,5,10,.92)}
}