:root[data-theme="blue"]{
  --bg:#141b7a; --surface:rgba(244,243,255,.07); --line:rgba(244,243,255,.28);
  --chalk:#f4f3ff; --ink:#0b0f5c; --yellow:#ffe45c; --lilac:#cfcdff; --muted:#bcbaf2;
  --track:rgba(244,243,255,.25);
}
:root,:root[data-theme="black"]{
  --bg:#000; --surface:#0d0d12; --line:#2d2d38;
  --chalk:#f1f0fa; --ink:#000; --yellow:#ffe45c; --lilac:#b9b6ff; --muted:#a2a1b6;
  --track:#2d2d38;
}
:root{
  --mono:"JetBrains Mono",ui-monospace,"Cascadia Code",Consolas,monospace;
  --sans:"Golos Text",system-ui,-apple-system,"Segoe UI",sans-serif;
  --pad:clamp(20px,4vw,56px);
  color-scheme:dark;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;background:var(--bg)}
body{
  margin:0;min-height:100vh;min-height:100svh;background:var(--bg);color:var(--chalk);
  font:400 1.0625rem/1.55 var(--sans);display:flex;flex-direction:column;
  padding:var(--pad);gap:clamp(24px,5vh,48px);
}
a{color:inherit}
:focus-visible{outline:3px solid var(--yellow);outline-offset:3px;border-radius:6px}
[hidden]{display:none!important}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.top,main,footer{width:100%;max-width:1180px;margin-inline:auto}

/* шапка */
.top{display:flex;justify-content:space-between;align-items:center;gap:16px}
.brand{font:800 1.125rem var(--mono);letter-spacing:-.02em;text-decoration:none}
.themes{display:flex;gap:10px;align-items:center}
.themes button{
  width:30px;height:30px;border-radius:50%;border:2px solid var(--line);cursor:pointer;padding:0;
  background:var(--sw);position:relative;
}
.themes button[aria-pressed="true"]{border-color:var(--chalk);box-shadow:0 0 0 3px var(--bg),0 0 0 5px var(--chalk)}
.themes button[data-theme-set="blue"]{--sw:#141b7a}
.themes button[data-theme-set="black"]{--sw:#000}
.themes button[data-theme-set="blue"]{border-color:#7e86ff}
.themes button[data-theme-set="black"]{border-color:#5a5a6a}
.themes button[aria-pressed="true"]{border-color:var(--chalk)}

main{flex:1;display:flex;flex-direction:column;gap:clamp(20px,3.5vh,32px)}
footer{font-size:.95rem;color:var(--muted)}

/* заголовки инструментов */
.back{color:var(--muted);text-decoration:none;align-self:flex-start;font-size:.95rem}
.back:hover{color:var(--chalk);text-decoration:underline}
h1.tt{font:800 clamp(1.9rem,4.6vw,3.1rem)/1.05 var(--mono);letter-spacing:-.035em;margin:0}
.sub{margin:-8px 0 0;color:var(--muted);max-width:40rem}

/* кнопки */
.btn{
  appearance:none;border:2px solid var(--chalk);border-radius:14px;padding:14px 26px;cursor:pointer;
  font:600 1.0625rem var(--sans);background:var(--chalk);color:var(--ink);
  transition:transform .12s,background .12s,color .12s;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:none}
.btn.alt{background:transparent;color:var(--chalk)}
.btn.alt:hover{background:var(--surface)}
.btn.ok{background:var(--yellow);border-color:var(--yellow);color:#0b0f5c}
.btn.sm{padding:8px 14px;font-size:.9rem;border-radius:10px;flex:none}
.btn.link{text-decoration:none;display:inline-block}
.actions{display:flex;flex-wrap:wrap;gap:12px}

/* поля */
label.fl{display:block;font-weight:600;margin-bottom:8px}
textarea,input[type=text],input[type=number],input[type=datetime-local],select{
  width:100%;padding:12px 14px;border-radius:12px;border:2px solid var(--line);background:var(--surface);
  color:var(--chalk);font:500 1rem/1.5 var(--mono);
}
textarea{min-height:240px;resize:vertical;tab-size:2}
textarea:focus,input:focus,select:focus{outline:none;border-color:var(--chalk)}
input::placeholder,textarea::placeholder{color:var(--muted);opacity:.8}
select option{background:var(--bg);color:var(--chalk)}
input[type=file]{color:var(--muted);font:500 .95rem var(--sans);max-width:100%}
input[type=file]::file-selector-button{
  margin-right:12px;padding:9px 16px;border-radius:10px;border:2px solid var(--line);
  background:transparent;color:var(--chalk);font:600 .95rem var(--sans);cursor:pointer;
}
input[type=color]{width:52px;height:46px;padding:2px;border:2px solid var(--line);border-radius:12px;background:var(--surface);cursor:pointer;flex:none}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.stack{display:grid;gap:22px}
.row{display:flex;gap:12px;align-items:center;flex-wrap:wrap}
.row>input[type=text]{flex:1;min-width:160px}

/* ползунок */
.len{display:flex;align-items:center;gap:20px}
.len output{font:800 2rem/1 var(--mono);min-width:2.6ch;letter-spacing:-.03em}
.len input{flex:1;min-width:0}
input[type=range]{-webkit-appearance:none;appearance:none;height:28px;background:transparent;margin:0;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:6px;border-radius:3px;background:var(--track)}
input[type=range]::-moz-range-track{height:6px;border-radius:3px;background:var(--track)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:28px;height:28px;margin-top:-11px;border-radius:50%;background:var(--chalk);border:0}
input[type=range]::-moz-range-thumb{width:28px;height:28px;border-radius:50%;background:var(--chalk);border:0}

/* переключатели-чипы */
.chips{display:flex;flex-wrap:wrap;gap:10px;border:0;padding:0;margin:0;min-width:0}
.chip{position:relative}
.chip input{position:absolute;opacity:0;inset:0;margin:0;cursor:pointer}
.chip span{
  display:inline-block;padding:10px 18px;border-radius:999px;border:2px solid var(--line);
  font:500 1rem var(--mono);transition:background .12s,color .12s,border-color .12s;
}
.chip input:checked+span{background:var(--chalk);color:var(--ink);border-color:var(--chalk)}
.chip input:focus-visible+span{outline:3px solid var(--yellow);outline-offset:3px}
.chip:hover span{border-color:var(--chalk)}

/* сообщения и строки результата */
.err{margin:0;min-height:1.55em;color:var(--yellow);font-weight:600}
.hint{margin:0;color:var(--muted);max-width:44rem}
.lines{display:grid;gap:8px}
.line{
  display:flex;gap:14px;align-items:center;justify-content:space-between;
  padding:10px 14px;border:2px solid var(--line);border-radius:12px;background:var(--surface);
}
.line code{font:500 1rem var(--mono);word-break:break-all;min-width:0}
.line .k{color:var(--muted);font:600 .9rem var(--sans);min-width:5.5ch;flex:none}
.line.hit{border-color:var(--yellow)}
.badge{display:inline-block;padding:2px 10px;border-radius:999px;font:600 .85rem var(--sans);border:2px solid var(--line);color:var(--muted)}
.badge.pass{background:var(--yellow);border-color:var(--yellow);color:#0b0f5c}
.sect{border-top:2px solid var(--line);padding-top:24px;display:grid;gap:18px}
.sect h2{font:800 1.4rem var(--mono);letter-spacing:-.02em;margin:0}

/* пароль */
.pw{font:700 48px/1.25 var(--mono);letter-spacing:-.01em;user-select:all;min-height:1.25em;cursor:text;margin:0}
.pw .g{display:inline-block;margin-right:.5em;white-space:nowrap}
.pw .g:last-child{margin-right:0}
.pw .l{color:var(--chalk)}
.pw .d{color:var(--yellow)}
.pw .s{color:var(--lilac)}
.meter{display:flex;align-items:center;gap:16px;max-width:520px}
.meter .bar{flex:1;height:6px;border-radius:3px;background:var(--track);overflow:hidden}
.meter .bar i{display:block;height:100%;width:0;background:var(--chalk);border-radius:3px;transition:width .4s}
.meter span{font-size:.95rem;white-space:nowrap}
.settings{display:grid;gap:22px;max-width:760px}
.custom input{max-width:420px}

/* главная: плитки */
.hero h1{font:800 clamp(2rem,5.2vw,3.8rem)/1.04 var(--mono);letter-spacing:-.04em;margin:0 0 14px;max-width:16em}
.hero p{margin:0;color:var(--muted);font-size:1.15rem;max-width:34rem}
.tiles{display:grid;grid-template-columns:repeat(6,1fr);gap:14px}
.tile{
  grid-column:span 2;display:flex;flex-direction:column;gap:18px;justify-content:space-between;min-height:210px;
  padding:22px;border:2px solid var(--line);border-radius:22px;background:var(--surface);
  text-decoration:none;transition:border-color .15s;
}
.tile.s3{grid-column:span 3}
.tile:hover,.tile:focus-visible{border-color:var(--chalk)}
.tile h2{font:800 1.4rem/1.15 var(--mono);letter-spacing:-.03em;margin:0 0 6px}
.tile p{margin:0;color:var(--muted);font-size:1rem}
.prev{font:500 .95rem/1.45 var(--mono);color:var(--lilac);overflow:hidden;word-break:break-all}
.prev .y{color:var(--yellow)}
.prev .big{font:700 1.9rem/1.2 var(--mono);color:var(--chalk);letter-spacing:-.02em}
.prev .big .d{color:var(--yellow)} .prev .big .s{color:var(--lilac)}
.prev svg{display:block;width:84px;height:84px;background:#fff;border-radius:8px;padding:4px}
.sw{display:flex;gap:8px}
.sw i{display:block;width:34px;height:34px;border-radius:50%}
.clock{font:800 2.6rem/1 var(--mono);letter-spacing:-.04em;color:var(--chalk)}

/* QR, таймер и прочее */
.qrbox{background:#fff;border-radius:16px;padding:16px;display:grid;place-items:center;width:max-content;max-width:100%}
.qrbox canvas{display:block;width:min(100%,340px);height:auto;image-rendering:pixelated}
.digits{font:800 clamp(3.5rem,16vw,9rem)/1 var(--mono);letter-spacing:-.05em;margin:0;font-variant-numeric:tabular-nums}
.phase{font:600 1.2rem var(--sans);color:var(--lilac);margin:0;min-height:1.6em}
.swatch{height:84px;border-radius:16px;border:2px solid var(--line);flex:1;min-width:120px}
.prevbox{border-radius:16px;padding:22px;border:2px solid var(--line)}
.prevbox b{display:block;font:800 1.6rem var(--mono);letter-spacing:-.02em}
.ratio{font:800 clamp(2.4rem,8vw,4rem)/1 var(--mono);letter-spacing:-.04em;margin:0}
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:12px}
.stat{border:2px solid var(--line);border-radius:14px;padding:12px 16px;background:var(--surface)}
.stat b{display:block;font:800 1.7rem/1.2 var(--mono);letter-spacing:-.03em}
.stat span{color:var(--muted);font-size:.92rem}
.nf .pw{font-size:clamp(120px,32vw,360px);line-height:1}

@media (max-width:900px){
  .tiles{grid-template-columns:repeat(2,1fr)}
  .tile,.tile.s3{grid-column:span 1}
  .tile.s3{grid-column:span 2}
  .grid2{grid-template-columns:1fr}
}
@media (max-width:560px){
  .tiles{grid-template-columns:1fr}
  .tile,.tile.s3{grid-column:span 1}
  .line{flex-wrap:wrap}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}