/* snow.css — page layer for /paper-snowflake-maker/. The shell (header, controls, buttons,
   explainer, footer) is /assets/polyatic.css; this adds the cutting-mat stage with the folded wedge
   and the open snowflake lying on it as white paper (white in both themes: it is paper on the mat),
   the cutting tools and the pattern swatches. */
.sf-noscript{margin:1rem;padding:.875rem 1rem;border:1px solid var(--line);border-left:.25rem solid var(--accent);border-radius:.625rem;background:var(--surface)}
.sf-head h1{margin-bottom:.25rem}
.sf-head .sub{margin-bottom:.625rem}

/* ---------- the stage ---------- */
.duo.sf-duo>.pane-result{position:static}
@media (min-width:920px){
  .duo.sf-duo{grid-template-columns:minmax(19rem,.75fr) minmax(0,1.25fr)}
  .duo.sf-duo>.pane-result{position:sticky;top:1rem}
}
.sf-stage{background:radial-gradient(110% 70% at 70% 0%,rgba(170,210,255,.13),transparent 60%),linear-gradient(180deg,var(--mat),var(--mat-2));
  color:var(--mat-ink);border-radius:var(--r);padding:.625rem .625rem .75rem;box-shadow:var(--shadow);min-width:0}
.sf-boards{display:grid;grid-template-columns:minmax(0,.63fr) minmax(0,1fr);gap:.5rem;align-items:stretch}
.sf-boards figure{margin:0;display:flex;flex-direction:column;min-width:0}
.sf-boards canvas{display:block;width:100%;height:auto;touch-action:none;cursor:crosshair;border-radius:.5rem}
.sf-fold canvas{background:rgba(255,255,255,.04);box-shadow:inset 0 0 0 1px rgba(255,255,255,.12)}
.sf-boards figcaption{margin-top:.25rem;font-family:var(--mono);font-size:.6875rem;letter-spacing:.02em;color:var(--mat-muted);text-align:center}
.sf-tools{display:flex;flex-wrap:wrap;gap:.375rem;margin:.5rem 0 0}
.sf-tool{flex:1 1 auto;white-space:nowrap;min-height:2.25rem;border:1px solid rgba(255,255,255,.3);background:transparent;color:var(--mat-ink);border-radius:.4375rem;font:inherit;font-weight:600;font-size:.8125rem;cursor:pointer;padding:0 .5rem}
.sf-tool.sf-wide{flex-grow:1.6}
.sf-tool:hover{border-color:rgba(255,255,255,.7)}
.sf-tool:disabled{opacity:.4;cursor:default}
.sf-tool.sf-finish{flex-basis:100%;background:var(--signal);color:var(--signal-ink);border-color:var(--signal)}
.sf-tool[hidden]{display:none}
.sf-tool:focus-visible,.sf-stage .btn:focus-visible,.sf-boards canvas:focus-visible{outline:2px solid var(--signal);outline-offset:2px}
.sf-actions{display:flex;flex-wrap:wrap;gap:.375rem;margin:.5rem 0 0}
.sf-actions .btn{flex:1 1 3rem;padding:0 .5rem;white-space:nowrap}
.sf-actions .btn.sf-main{flex:3 1 9.5rem;font-size:.9375rem}
.sf-stage .btn.ghost{color:var(--mat-ink);border-color:rgba(255,255,255,.4);background:transparent}
.sf-stage .btn:disabled{opacity:.6;cursor:progress}
.sf-status{margin:.5rem 0 0;font-size:.8125rem;line-height:1.45;color:var(--mat-muted)}
.sf-status.bad{color:#ffd2a8;font-weight:600}
.sf-status b{color:var(--mat-ink)}
.sf-msg{margin:.25rem 0 0;font-size:.875rem;font-weight:600;color:var(--mat-ink)}
.sf-msg:empty{display:none}

/* ---------- patterns and settings ---------- */
.sf-form-h{margin:0 0 .625rem;font-size:1.1875rem}
.sf-level{margin:.625rem 0 .375rem;font-family:var(--mono);font-size:.6875rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.sf-level:first-child{margin-top:0}
.sf-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:.4375rem}
.sf-pat{display:flex;flex-direction:column;align-items:stretch;gap:.1875rem;padding:.25rem;border:1px solid var(--line);border-radius:.5rem;background:var(--mat);color:var(--mat-ink);font:inherit;font-size:.6875rem;line-height:1.2;cursor:pointer;text-align:center}
.sf-pat canvas{width:100%;height:auto;display:block}
.sf-pat.active{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent)}
.sf-pat:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.sf-hint{margin:.75rem 0 1rem;font-size:.8125rem;color:var(--muted);line-height:1.5}
.sf-form .modes{margin-bottom:.25rem}
.sf-form .modes button small{display:block;font-weight:500;font-size:.6875rem;opacity:.8}
.sf-inks{display:flex;gap:.5rem;margin-top:.5rem}
.sf-inks[hidden]{display:none}
.sf-ink{width:2rem;height:2rem;border-radius:50%;border:2px solid var(--surface);box-shadow:0 0 0 1px var(--line-2);cursor:pointer;padding:0}
.sf-ink.active{box-shadow:0 0 0 2px var(--accent)}
.sf-ink:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
@media (prefers-reduced-motion:reduce){.sf-tool,.sf-pat{transition:none}}