:root{
  --paper:#F7F4EA;
  --grid:rgba(66,110,190,.12);
  --ink:#1B2A4A;
  --muted:#5D6B85;
  --card:#FFFFFF;
  --line:#E3DECF;
  --red:#E63946;
  --green:#2A9D8F;
  --yellow:#FFD166;
  --yellow-dark:#E0A800;
  --text:"Bricolage Grotesque", "Segoe UI", system-ui, sans-serif;
  --mono:"Chivo Mono", "Consolas", ui-monospace, monospace;
  color-scheme:light;
}
*{box-sizing:border-box}
html,body{background:var(--paper)}
body{margin:0;color:var(--ink);font:16px/1.45 var(--text);padding-inline:16px;padding-block:8px 16px;-webkit-tap-highlight-color:transparent;
  background-image:linear-gradient(var(--grid) 1px, transparent 1px), linear-gradient(90deg, var(--grid) 1px, transparent 1px);background-size:24px 24px}
.app{max-width:980px;margin-inline:auto;display:grid;gap:12px;min-height:calc(100dvh - 24px);align-content:start}

.bar{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:48px}
.back{color:var(--muted);text-decoration:none;font-weight:700;font-size:15px}
.back:hover{color:var(--ink)}
.title{margin:0;font-weight:800;font-size:clamp(1.3rem,3.6vw,1.9rem);letter-spacing:-.01em}
.title span{background:linear-gradient(transparent 55%, var(--yellow) 55%);padding-inline:2px}
.bar-actions{display:flex;gap:8px}
.icon-btn{width:42px;height:42px;border-radius:12px;border:2px solid var(--line);background:var(--card);color:var(--ink);display:grid;place-items:center;cursor:pointer;padding:0}
.icon-btn[hidden]{display:none}
.icon-btn span{display:grid;place-items:center}
.icon-btn span[hidden]{display:none}
.icon-btn svg{width:22px;height:22px}

button{font:inherit;cursor:pointer;color:inherit}
:focus-visible{outline:3px solid var(--ink);outline-offset:3px}
kbd{font:600 12px var(--mono);padding:0 5px;border:1px solid var(--line);border-bottom-width:2px;border-radius:4px;background:var(--card)}
.screen{display:grid;gap:14px}
.screen[hidden]{display:none}
#home{grid-template-columns:repeat(2, minmax(0, 1fr));align-items:start}
.card{background:var(--card);border:2px solid var(--line);border-radius:20px;padding:18px 20px;display:grid;gap:14px;box-shadow:0 6px 0 rgba(27,42,74,.06)}
.mode-head{display:grid;grid-template-columns:52px 1fr;gap:12px;align-items:start}
.mode-head h2{margin:0;font-size:1.5rem;font-weight:800;line-height:1.1}
.mode-head p{margin:4px 0 0;color:var(--muted)}
.badge{width:52px;height:52px;border-radius:14px;background:var(--yellow);display:grid;place-items:center;font-size:28px}
fieldset{border:0;margin:0;padding:0;display:grid;gap:8px}
legend{font-size:12px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);margin-bottom:6px;padding:0}
.chips{display:flex;flex-wrap:wrap;gap:8px}
.chip{position:relative;cursor:pointer}
.chip input{position:absolute;opacity:0;pointer-events:none}
.chip span{display:block;padding:6px 12px;border-radius:999px;border:2px solid var(--line);font-weight:700;font-family:var(--mono);font-size:14px}
.chip input:checked + span{background:var(--ink);border-color:var(--ink);color:#fff}
.chip input:focus-visible + span{outline:3px solid var(--yellow-dark);outline-offset:2px}
.seg{display:flex;border:2px solid var(--line);border-radius:12px;overflow:hidden}
.seg label{position:relative;flex:1;cursor:pointer}
.seg input{position:absolute;opacity:0;pointer-events:none}
.seg span{display:block;text-align:center;padding:7px 8px;font-weight:700;font-size:14px;height:100%}
.seg span small{display:block;font-weight:500;font-size:11px;color:var(--muted)}
.seg label + label span{border-left:2px solid var(--line)}
.seg input:checked + span{background:var(--ink);color:#fff}
.seg input:checked + span small{color:#C8D2E6}
.seg input:focus-visible + span{outline:3px solid var(--yellow-dark);outline-offset:-3px}
.rules{margin:0;font-size:14px;color:var(--muted)}
.record{margin:0;font-weight:700;min-height:1.4em}
.btn{border:2px solid var(--ink);border-radius:14px;background:var(--card);font-weight:800;padding:10px 18px;box-shadow:0 4px 0 var(--ink)}
.btn:active{transform:translateY(3px);box-shadow:0 1px 0 var(--ink)}
.btn.primary{background:var(--yellow)}
.btn:disabled{opacity:.4}
.row{display:flex;gap:10px;flex-wrap:wrap;justify-content:center}

/* hız turu */
.speed-top,.t-top{display:grid;grid-template-columns:auto 1fr auto;gap:14px;align-items:center}
.stat{background:var(--card);border:2px solid var(--line);border-radius:14px;padding:4px 14px;text-align:center;min-width:92px}
.stat small,.target-box small{display:block;font-size:11px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.stat b{font:700 1.6rem/1.1 var(--mono);font-variant-numeric:tabular-nums}
.timer{position:relative;height:28px;border-radius:999px;background:var(--card);border:2px solid var(--line);overflow:hidden}
.timer-fill{position:absolute;inset:0;right:auto;width:100%;background:var(--green);transition:width .2s linear}
.timer-fill.low{background:var(--red)}
.timer span{position:absolute;inset:0;display:grid;place-items:center;font:700 14px var(--mono);color:var(--ink)}
.question{display:flex;justify-content:center;align-items:baseline;gap:.35em;font:700 clamp(2.6rem,11vw,5rem)/1.1 var(--mono);padding-block:8px;flex-wrap:wrap}
.question .eq{color:var(--muted)}
.question .answer{min-width:2.2ch;border-bottom:6px solid var(--ink);text-align:center;color:var(--ink)}
.question .answer:empty::before{content:"?";color:#C3C9D6}
.question.good .answer{color:var(--green);border-color:var(--green)}
.question.bad{animation:shake .3s}
.question.bad .answer{color:var(--red);border-color:var(--red)}
@keyframes shake{25%{translate:-8px 0}75%{translate:8px 0}}
.feedback{margin:0;text-align:center;font-weight:700;min-height:1.5em;color:var(--muted)}
.feedback.good{color:var(--green)}
.feedback.bad{color:var(--red)}
.keypad{display:grid;grid-template-columns:repeat(3, 1fr);gap:10px;max-width:420px;width:100%;margin-inline:auto}
.keypad button{border:2px solid var(--line);border-radius:16px;background:var(--card);font:700 1.8rem var(--mono);padding:12px 0;box-shadow:0 4px 0 var(--line)}
.keypad button:active{transform:translateY(3px);box-shadow:0 1px 0 var(--line)}
.keypad .soft{color:var(--muted)}
.keypad .ok{background:var(--ink);color:#fff;border-color:var(--ink);box-shadow:0 4px 0 #0E1830}
.hint{margin:0;text-align:center;color:var(--muted);font-size:13px}

.result{max-width:720px;width:100%;margin-inline:auto;justify-items:center;text-align:center}
.eyebrow{margin:0;font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.big{margin:0;font-size:clamp(2.2rem,7vw,3.4rem);font-weight:800;line-height:1;text-wrap:balance}
.note{margin:0;font-weight:700;color:var(--red);min-height:1.4em}
.kpis{display:grid;grid-template-columns:repeat(4, minmax(0, 1fr));gap:8px;width:100%}
.kpis div{border:2px solid var(--line);border-radius:14px;padding:6px}
.kpis small{display:block;font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.kpis b{font:700 1.5rem var(--mono)}
.table-wrap{width:100%;overflow-x:auto}
table.ops{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
table.ops th,table.ops td{padding:6px 10px;border-bottom:1px solid var(--line);text-align:center}
table.ops th{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
table.ops td:first-child{font:700 1.2rem var(--mono)}
.bar-cell{display:flex;align-items:center;gap:8px}
.bar-cell i{flex:1;height:10px;border-radius:5px;background:var(--line);overflow:hidden;position:relative}
.bar-cell i::after{content:"";position:absolute;inset:0;width:var(--p);background:var(--green)}
.mistakes{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:6px;justify-content:center}
.mistakes li{font:600 14px var(--mono);padding:4px 10px;border-radius:10px;background:#FDECEE;color:var(--ink)}
.mistakes li s{color:var(--red)}
.mistakes-title{margin:0 0 6px;font-weight:800}

/* hedef sayı */
.target-box{justify-self:center;background:var(--ink);color:#fff;border-radius:18px;padding:6px 26px;text-align:center}
.target-box small{color:#AFC0E0}
.target-box b{font:700 clamp(2.4rem,9vw,3.6rem)/1 var(--mono);letter-spacing:.06em;color:var(--yellow)}
.closest{margin:0;text-align:center;font-weight:700;color:var(--muted)}
.tiles{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;min-height:84px}
.tile{min-width:78px;height:78px;padding-inline:10px;border-radius:18px;border:3px solid var(--ink);background:var(--card);font:700 1.9rem var(--mono);box-shadow:0 5px 0 var(--ink);transition:transform .08s}
.tile.made{background:#E8F5F3;border-color:var(--green);box-shadow:0 5px 0 var(--green)}
.tile.sel{background:var(--yellow);transform:translateY(-4px)}
.tile.hit{background:var(--green);color:#fff}
.tile.pop{animation:pop .3s ease-out}
@keyframes pop{from{scale:.5}to{scale:1}}
.ops-row{display:flex;gap:12px;justify-content:center}
.ops-row button{width:68px;height:62px;border-radius:16px;border:2px solid var(--line);background:var(--card);font:700 2rem var(--mono);box-shadow:0 4px 0 var(--line)}
.ops-row button.sel{background:var(--ink);color:#fff;border-color:var(--ink)}
.ops-row button:disabled{opacity:.35}
.steps{margin:0;padding-left:1.6em;font:600 1.05rem var(--mono);display:grid;gap:2px;max-width:420px;width:100%;margin-inline:auto;min-height:1.6em}
.solution{display:grid;gap:2px;width:100%;border:2px dashed var(--line);border-radius:14px;padding:8px 12px}
.solution small{font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.solution b{font:700 1.2rem var(--mono);overflow-wrap:anywhere}

@media (max-width:720px){
  #home{grid-template-columns:1fr}
  .kpis{grid-template-columns:repeat(2, minmax(0, 1fr))}
  .stat{min-width:74px;padding-inline:8px}
  .stat b{font-size:1.3rem}
  .tile{min-width:62px;height:64px;font-size:1.5rem}
  .keypad button{padding:10px 0;font-size:1.6rem}
  .hint{display:none}
}
@media (prefers-reduced-motion:reduce){
  .question.bad,.tile.pop{animation:none}
  .timer-fill{transition:none}
}