:root{
  --bg:#0b0f1a;--bg2:#111726;--card:#161d31;--card2:#1e2742;--line:#2a3555;
  --text:#eef1f8;--muted:#9aa4c2;--grad:linear-gradient(90deg,#4f46e5,#9333ea,#db2777);
  --ok:#22c55e;--bad:#ef4444;--warn:#f59e0b;--info:#3b82f6;
  --k1:#e21b3c;--k2:#1368ce;--k3:#c68a00;--k4:#26890c;
  --acelerar:#2563eb;--trabas:#d97706;--mejorar:#7c3aed;--vender:#059669;
}
*{box-sizing:border-box}
html,body{margin:0;background:var(--bg);color:var(--text);font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;-webkit-text-size-adjust:100%}
body{min-height:100dvh}
.wrap{max-width:560px;margin:0 auto;padding:16px 16px 48px}
h1,h2,h3{margin:0 0 8px;letter-spacing:-.02em}
.brand{font-weight:900;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent}
.muted{color:var(--muted)}
.small{font-size:13px}
.center{text-align:center}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.grow{flex:1}
header.top{display:flex;justify-content:space-between;align-items:center;margin-bottom:14px}
.chip{display:inline-block;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:800;background:var(--card2);color:#fff;text-transform:uppercase;letter-spacing:.06em;white-space:nowrap}
.chip.acelerar{background:var(--acelerar)}.chip.trabas{background:var(--trabas)}.chip.mejorar{background:var(--mejorar)}.chip.vender{background:var(--vender)}
.card{background:var(--card);border:1px solid var(--line);border-radius:18px;padding:20px;margin-bottom:14px}
/* Sólo anima cuando cambia de pantalla; los cambios dentro de una pantalla se aplican en el lugar. */
.screen.enter{animation:enter .25s ease}
.screen.enter-x{animation:enterx .22s ease}
@keyframes enter{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
@keyframes enterx{from{opacity:0;transform:translateX(28px)}to{opacity:1;transform:none}}
@keyframes fade{from{opacity:0}to{opacity:1}}
.btn{display:block;width:100%;min-height:56px;padding:12px 16px;font-size:18px;font-weight:800;border-radius:14px;border:0;cursor:pointer;color:#fff;background:var(--card2);transition:transform .08s ease,filter .15s;-webkit-tap-highlight-color:transparent}
.btn:active{transform:scale(.98)}
.btn:disabled{opacity:.45;cursor:default}
.btn.primary{background:var(--grad)}
.btn.ok{background:var(--ok);color:#06210f}
.btn.bad{background:var(--bad)}
.btn.ghost{background:transparent;border:1px solid var(--line);color:var(--muted);min-height:44px;font-size:15px;font-weight:600}
.btn.sm{min-height:44px;font-size:15px}
.btn+.btn{margin-top:10px}
.bar{height:14px;background:var(--card2);border-radius:999px;overflow:hidden;display:flex}
.bar>i{display:block;height:100%;transition:width .5s ease}
.bar .v{background:var(--ok)}.bar .r{background:var(--bad)}.bar .s{background:#4b5573}
.progress{height:6px;background:var(--card2);border-radius:999px;overflow:hidden;margin:6px 0 14px}
.progress>i{display:block;height:100%;background:var(--grad);transition:width .3s}
.q{font-size:22px;font-weight:700;line-height:1.3;margin:10px 0 18px}
input[type=text],textarea{width:100%;font:inherit;font-size:18px;padding:14px;border-radius:14px;border:1px solid var(--line);background:var(--bg2);color:var(--text);outline:none}
input[type=text]:focus,textarea:focus{border-color:#7c3aed}
textarea{min-height:110px;resize:vertical}
input[type=range]{width:100%;accent-color:#9333ea;height:44px}
.big{font-size:44px;font-weight:900;letter-spacing:-.03em}
.list{display:flex;flex-direction:column;gap:10px}
.item{display:flex;gap:12px;align-items:center;background:var(--bg2);border:1px solid var(--line);border-radius:14px;padding:14px;cursor:pointer;-webkit-tap-highlight-color:transparent}
.item.sel{border-color:#9333ea;background:#1f1b3a}
.item .num{width:32px;height:32px;border-radius:50%;background:var(--card2);display:grid;place-items:center;font-weight:900;flex:none}
.item .num.on{background:var(--grad)}
.opts{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.opt{min-height:96px;border-radius:16px;border:0;color:#fff;font-weight:800;font-size:17px;padding:12px;cursor:pointer;display:flex;flex-direction:column;align-items:flex-start;justify-content:space-between;text-align:left;line-height:1.2;-webkit-tap-highlight-color:transparent;transition:transform .08s}
.opt:active{transform:scale(.97)}
.opt .shape{font-size:22px;opacity:.9}
.opt.k1{background:var(--k1)}.opt.k2{background:var(--k2)}.opt.k3{background:var(--k3)}.opt.k4{background:var(--k4)}
.opt.dim{opacity:.35}.opt.win{box-shadow:0 0 0 4px #fff inset}
.timer{height:10px;background:var(--card2);border-radius:999px;overflow:hidden;margin:8px 0 14px}
.timer>i{display:block;height:100%;background:var(--grad)}
.vote{border:1px solid var(--line);background:var(--bg2);color:var(--text);border-radius:999px;padding:8px 14px;font-weight:800;font-size:16px;cursor:pointer;flex:none}
.vote.on{background:#db2777;border-color:#db2777}
.vote:disabled{opacity:.35}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#fff;color:#0b0f1a;padding:12px 18px;border-radius:12px;font-weight:700;box-shadow:0 10px 30px rgba(0,0,0,.4);z-index:9;max-width:90vw;animation:fade .2s}
.result{margin-top:4px}
.result .lbl{display:flex;justify-content:space-between;font-weight:800;margin-bottom:8px;font-size:17px}
.item{transition:border-color .15s,background .15s}
.opt.sent{outline:3px solid #fff}
.status{position:fixed;top:0;left:0;right:0;background:var(--warn);color:#000;text-align:center;font-weight:800;padding:6px;font-size:13px;z-index:9}
.medal{font-size:34px}
.pts{font-variant-numeric:tabular-nums}

/* pila de tarjetas (hipótesis) con swipe */
.stack{position:relative}
.card.swipe{user-select:none;-webkit-user-select:none;touch-action:pan-y;will-change:transform;transition:transform .28s ease,opacity .28s ease;margin-bottom:0}
.card.swipe.front{position:relative;z-index:2;min-height:280px;display:flex;flex-direction:column;justify-content:center;gap:14px;cursor:grab}
.card.swipe.back{position:absolute;inset:0;transform:scale(.95) translateY(24px);opacity:.55;pointer-events:none;display:flex;flex-direction:column;justify-content:center;gap:14px}
.card.swipe.fly{opacity:0}
.stamp{position:absolute;top:18px;font-weight:900;font-size:22px;padding:6px 12px;border:3px solid;border-radius:10px;opacity:0;pointer-events:none;letter-spacing:.04em}
.stamp.ok{left:18px;color:var(--ok);border-color:var(--ok);transform:rotate(-12deg)}
.stamp.bad{right:18px;color:var(--bad);border-color:var(--bad);transform:rotate(12deg)}
.strip{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:10px 12px;margin-bottom:12px;min-height:54px}
.sum .item{flex-direction:column;align-items:stretch;gap:8px;cursor:default}