:root{
  --acc:#fe1a3f;
  --bg:#f5f5f7;
  --panel:#ffffff;
  --ink:#16161a;
  --muted:#6f6f7a;
  --line:#e4e4ea;
  --radius:10px;
}
*{box-sizing:border-box}
html,body{margin:0}
body{
  background:transparent;
  color:var(--ink);
  font:14px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
  -webkit-font-smoothing:antialiased;
}
.wrap{display:grid;grid-template-columns:288px minmax(0,1fr);gap:16px;padding:0;align-items:start}
@media (max-width:860px){.wrap{grid-template-columns:1fr}}
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.panel + .panel{margin-top:12px}
h1{margin:0 0 4px;font-size:16px;letter-spacing:-.01em}
.lede{margin:0 0 14px;color:var(--muted);font-size:12.5px}
.group{margin-bottom:14px}
.group:last-child{margin-bottom:0}
label.lbl{display:flex;justify-content:space-between;align-items:baseline;gap:8px;font-size:12px;font-weight:600;letter-spacing:.01em;margin-bottom:6px}
label.lbl .val{font-weight:400;color:var(--muted);font-variant-numeric:tabular-nums}
input[type=range]{width:100%;accent-color:var(--acc);margin:0}
select,input[type=text],input[type=number],textarea{
  width:100%;font:inherit;padding:7px 9px;border:1px solid var(--line);
  border-radius:8px;background:#fff;color:inherit
}
textarea{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:12px;line-height:1.5;resize:vertical}
/* :focus-visible, ne :focus — prsten se ukáže jen při ovládání klávesnicí.
   Při tažení posuvníku nebo kliknutí do pole by jen překážel. */
select:focus-visible,input:focus-visible,textarea:focus-visible{
  outline:2px solid var(--acc);outline-offset:1px;border-color:transparent
}
input[type=range]:focus{outline:none}
.swatches{display:flex;gap:8px;flex-wrap:wrap}
.sw{position:relative;width:38px;height:38px;border-radius:8px;border:1px solid var(--line);overflow:hidden;padding:0;cursor:pointer;background:none}
.sw input[type=color]{position:absolute;inset:-6px;width:calc(100% + 12px);height:calc(100% + 12px);border:0;padding:0;cursor:pointer;background:none}
.btn{
  appearance:none;border:1px solid var(--line);background:#fff;color:var(--ink);
  font:inherit;font-weight:600;font-size:13px;padding:9px 12px;border-radius:8px;cursor:pointer;
  transition:border-color .12s,background .12s
}
.btn:hover{border-color:#c8c8d2;background:#fafafb}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--acc);border-color:var(--acc);color:#fff}
.btn.primary:hover{filter:brightness(1.07);background:var(--acc)}
.btn.block{width:100%}
.row{display:flex;gap:8px;flex-wrap:wrap}
.row > *{flex:1 1 0;min-width:0}
.stage{
  background:
    linear-gradient(45deg,#ececf1 25%,transparent 25%,transparent 75%,#ececf1 75%) 0 0/20px 20px,
    linear-gradient(45deg,#ececf1 25%,transparent 25%,transparent 75%,#ececf1 75%) 10px 10px/20px 20px,
    #fff;
  border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;line-height:0
}
.stage > svg,.stage > canvas,.stage css-doodle{display:block;width:100%;height:auto}
.hint{font-size:12px;color:var(--muted);margin:10px 0 0}
.credit{margin:14px 2px 0;font-size:11.5px;color:var(--muted)}
.credit a{color:var(--muted)}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.chip{
  appearance:none;border:1px solid var(--line);background:#fff;border-radius:999px;
  padding:5px 11px;font:inherit;font-size:12px;cursor:pointer
}
.chip[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:#fff}
.toast{
  position:fixed;left:50%;bottom:18px;transform:translate(-50%,12px);
  background:var(--ink);color:#fff;padding:9px 16px;border-radius:999px;font-size:13px;
  opacity:0;pointer-events:none;transition:opacity .18s,transform .18s;z-index:50
}
.toast.on{opacity:1;transform:translate(-50%,0)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}