/* /string-art-generator/ page styles. Built from /assets/polyatic.css tokens only (no new colours or fonts).
   The preview canvas shows the visitor's own thread and board colours, in light and dark theme alike. */
.nojs{margin:1.25rem 0 0;padding:0.875rem 1rem;border:1px solid var(--line);border-left:0.25rem solid var(--accent);border-radius:0.625rem;background:var(--surface);color:var(--ink);font-size:0.9375rem;line-height:1.6}

@media(min-width:920px){.sa-duo{grid-template-columns:minmax(0,1.3fr) minmax(21rem,1fr)}}
.duo>.pane-result.sa-side{position:static}
.sa-side{display:grid;gap:1rem;align-content:start}

/* drop zone (same component as the other polyatic file tools) */
.drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:0.5rem;text-align:center;min-height:11rem;padding:1.5rem 1.25rem;border:2px dashed var(--line-2);border-radius:0.875rem;background:var(--surface-2);cursor:pointer;transition:border-color .15s,background .15s}
.drop:hover,.drop:focus-visible,.drop.drag{border-color:var(--accent);background:var(--accent-soft)}
.drop b{font-size:1.0625rem}
.drop small{color:var(--muted);max-width:34ch}
@media(min-width:920px){.sa-drop{min-height:20rem}}
/* a saved pattern was resumed without its photo: keep the open control, but small, above the preview */
.sa-resumed .sa-drop{min-height:0;flex-direction:row;flex-wrap:wrap;padding:0.875rem 1rem}
.sa-resumed .sa-drop small{max-width:none}
.sa-resumed .hint{display:none}
/* icon: a ring of nails with two threads across it */
.sa-drop-icon{position:relative;width:2.75rem;height:2.75rem;border:2px dotted var(--ink);border-radius:50%;background:linear-gradient(60deg,transparent 48%,var(--ink) 48%,var(--ink) 52%,transparent 52%),linear-gradient(-30deg,transparent 48%,var(--accent) 48%,var(--accent) 54%,transparent 54%),var(--surface)}
.has-image .drop{display:none}

.hint{font-size:0.8125rem;color:var(--muted);margin:0.75rem 0.125rem 0;min-height:1.125rem}
.hint.bad{color:var(--bad);font-weight:600}
.has-image .hint{display:none}

.sa-work[hidden],.sa-player[hidden],.sa-target[hidden]{display:none}
.sa-stage{position:relative;border:1px solid var(--line);border-radius:0.5rem;background:var(--surface-2);padding:0.5rem}
.sa-art{display:block;width:100%;height:auto;aspect-ratio:1/1;max-height:min(76vh,44rem);object-fit:contain;margin:0 auto}
.sa-target{position:absolute;right:0.75rem;bottom:0.75rem;width:22%;max-width:7.5rem;height:auto;aspect-ratio:1/1;border:1px solid var(--line-2);border-radius:0.25rem;background:var(--surface);box-shadow:var(--shadow)}
.sa-meter{margin-top:0.75rem}
.sa-meter .fill{background:var(--accent)}
.sa-status{margin:0.5rem 0.125rem 0.75rem;font-size:0.875rem;color:var(--ink);min-height:1.25rem}
.sa-status.bad{color:var(--bad);font-weight:600}
.sa-how{margin:0.75rem 0.125rem 0}

.sa-line{display:flex;flex-wrap:wrap;gap:0.375rem 0.875rem;align-items:center;margin:0.5rem 0.125rem 0;font-size:0.8125rem;color:var(--muted)}
.sa-mono{font-family:var(--mono);font-size:0.75rem;color:var(--muted);font-variant-numeric:tabular-nums}
.sa-link{border:0;background:none;padding:0.25rem 0;margin-left:auto;color:var(--muted);font:inherit;font-size:0.8125rem;text-decoration:underline;text-underline-offset:2px;cursor:pointer}
.sa-link:hover{color:var(--accent)}
.sa-inline{margin:0;padding:0;font-size:inherit}

.sa-sec{font-size:0.8125rem;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--muted);margin:0 0 0.75rem}
.sa-k{display:block;font-family:var(--mono);font-size:0.75rem;font-weight:500;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin-bottom:0.375rem}
.sa-k .u{text-transform:none}
.sa-modes{margin-bottom:0.75rem}
.sa-modes button{min-height:2.5rem}
.sa-unit{margin:0}
.sa-unit button{min-height:2.75rem}
.sa-grid{display:grid;grid-template-columns:1fr 1fr;gap:0.75rem;margin-bottom:0.75rem}
.sa-grid .field{margin:0}
.sa-in{display:block;min-width:0}
.sa-in input,.sa-in select{width:100%}
.sa-colour input[type=color]{height:2.75rem;padding:0.125rem;border:1px solid var(--line-2);border-radius:0.5rem;background:var(--surface);cursor:pointer}
.sa-full{margin-bottom:0.75rem}
.sa-check{margin:0 0 0.75rem;font-size:0.875rem;align-items:flex-start}
.sa-check input{margin-top:0.1875rem;flex:0 0 auto}
.sa-panel .field{margin-bottom:1rem}
.sa-len{margin:0 0 0.75rem;padding:0.5rem 0.75rem;border:1px solid var(--line);border-left:0.25rem solid var(--accent);border-radius:0.5rem;background:var(--surface-2);font-size:0.875rem;color:var(--ink);font-variant-numeric:tabular-nums}
.sa-len b{font-family:var(--mono)}

.sa-two{display:flex;flex-wrap:wrap;gap:0.75rem}
.sa-two .btn{flex:1 1 9rem}
.btn:disabled{opacity:.5;cursor:default;filter:none}
.modes button:focus-visible,.drop:focus-visible,.btn:focus-visible,.sa-link:focus-visible,.sa-text summary:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

.note{font-size:0.8125rem;color:var(--muted);margin:0.75rem 0.125rem 0;line-height:1.5}
.sa-note{margin:0.75rem 0.125rem 0}
.note.bad{color:var(--bad);font-weight:600}

/* step player: big enough to read from a board at arm's length */
.sa-player{margin-top:1rem}
.sa-player-top{display:flex;justify-content:space-between;align-items:baseline;gap:0.75rem}
.sa-player-top .sa-sec{margin:0}
.sa-now{display:flex;justify-content:center;align-items:center;gap:0.75rem;margin:0.75rem 0 0.25rem;font-family:var(--mono);font-weight:700;font-size:clamp(3rem,15vw,6.5rem);line-height:1.05;color:var(--ink);font-variant-numeric:tabular-nums}
.sa-now #pFrom{color:var(--muted)}
.sa-arrow{color:var(--accent);font-size:.7em}
.sa-next{text-align:center;margin:0 0 1rem;font-family:var(--mono);font-size:0.875rem;color:var(--muted)}
.sa-pbtns .btn{height:3.5rem;font-size:1.0625rem}
.sa-popts{display:grid;gap:0.75rem;margin-top:1rem}
@media(min-width:720px){.sa-popts{grid-template-columns:minmax(8rem,12rem) 1fr 1fr;align-items:end}}
.sa-jump input{width:100%}
.sa-text{margin-top:1rem}
.sa-text summary{cursor:pointer;font-size:0.875rem;font-weight:600}
.sa-text textarea{width:100%;margin-top:0.5rem;font-family:var(--mono);font-size:0.8125rem;line-height:1.5;resize:vertical}

.explainer .sa-steps,.explainer .sa-cannot{color:var(--muted);font-size:0.9375rem;margin:0 0 0.75rem;padding-left:1.25rem}
.explainer .sa-steps li,.explainer .sa-cannot li{margin:0 0 0.5rem}
.explainer .sa-steps b,.explainer .sa-cannot b{color:var(--ink)}
.explainer code{font-family:var(--mono);font-size:0.875em;overflow-wrap:anywhere}

@media (prefers-reduced-motion:reduce){.drop{transition:none}.sa-meter .fill{transition:none}}

/* desktop: the preview stays in view while the controls beside it scroll */
@media(min-width:920px){.sa-duo>.pane-main{position:sticky;top:1rem}}