:root {
  --bg: #f7f5f0;
  --panel: #ffffff;
  --ink: #1f2430;
  --muted: #5c6270;
  --line: #e3ded4;
  --accent: #2f5aa8;
  --accent-ink: #ffffff;
  --accent-2: #c8553d;
  --fabric: #f3ece0;
  --fabric-edge: #d9cdb8;
  --thread: #2f5aa8;
  --ghost: #9aa3b5;
  --start: #2e8b57;
  --end: #c8553d;
  --error: #b42318;
  --radius: 14px;
  --shadow: 0 1px 2px rgb(31 36 48 / 0.06), 0 8px 24px rgb(31 36 48 / 0.06);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171c;
    --panel: #1c2027;
    --ink: #eceff4;
    --muted: #a3aab8;
    --line: #2d333d;
    --accent: #6d9be8;
    --accent-ink: #0d1114;
    --accent-2: #f08a73;
    --fabric: #2a2f38;
    --fabric-edge: #3a414d;
    --thread: #8fb3f0;
    --ghost: #5b6474;
    --start: #5cc98a;
    --end: #f08a73;
    --error: #ff8a80;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.55 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
h1, h2, h3 { line-height: 1.2; letter-spacing: -0.01em; }

.site-header {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  max-width: 1160px; margin: 0 auto; padding: 16px;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 1.15rem; color: var(--ink); text-decoration: none; }
.site-header nav { display: flex; gap: 16px; font-size: 0.95rem; }
.site-header nav a { color: var(--muted); text-decoration: none; }
.site-header nav a:hover { color: var(--ink); }

main { max-width: 1160px; margin: 0 auto; padding: 0 16px 48px; }

.hero { text-align: center; padding: 24px 0 28px; }
.hero h1 { font-size: clamp(1.8rem, 4.5vw, 2.8rem); margin: 0 auto 12px; max-width: 18em; }
.hero em { font-style: normal; color: var(--accent); }
.lede { color: var(--muted); font-size: 1.1rem; max-width: 42em; margin: 0 auto; }

.tool { display: grid; grid-template-columns: minmax(0, 360px) minmax(0, 1fr); gap: 20px; align-items: start; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; }

fieldset { border: 0; margin: 0 0 18px; padding: 0; min-width: 0; }
legend { font-weight: 650; margin-bottom: 10px; display: flex; align-items: center; gap: 8px; }
.step {
  display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 50%;
  background: var(--accent); color: var(--accent-ink); font-size: 0.8rem;
}

.drop {
  display: flex; flex-direction: column; gap: 4px; align-items: center; text-align: center;
  border: 2px dashed var(--line); border-radius: 12px; padding: 20px 12px; cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.drop:hover, .drop:focus-visible, .drop.over { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 6%, transparent); outline: none; }
.drop span { color: var(--muted); font-size: 0.88rem; }

.row { display: flex; flex-direction: column; gap: 4px; margin: 10px 0; font-size: 0.92rem; color: var(--muted); }
.row.split { flex-direction: row; align-items: center; justify-content: space-between; gap: 10px; }
.row.pair { flex-direction: row; gap: 10px; }
.row.pair label { display: flex; flex-direction: column; gap: 4px; flex: 1; min-width: 0; }
input[type="number"], input[type="text"], select, textarea {
  font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line);
  border-radius: 9px; padding: 8px 10px; width: 100%; min-width: 0;
}
textarea { resize: vertical; }
input[type="range"] { width: 100%; accent-color: var(--accent); }
input:focus-visible, select:focus-visible, textarea:focus-visible, button:focus-visible, .button:focus-visible, summary:focus-visible {
  outline: 2px solid var(--accent); outline-offset: 2px;
}

.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 9px; overflow: hidden; }
.seg label { position: relative; padding: 6px 12px; cursor: pointer; font-size: 0.88rem; color: var(--muted); }
.seg input { position: absolute; opacity: 0; pointer-events: none; }
.seg label:has(input:checked) { background: var(--accent); color: var(--accent-ink); }
.seg label:has(input:focus-visible) { outline: 2px solid var(--accent); outline-offset: -2px; }
.seg.source { display: flex; margin-bottom: 12px; }
.seg.source label { flex: 1; text-align: center; padding: 8px 6px; }

.motifs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.motifs button {
  display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 6px 4px 5px;
  font-size: 0.78rem; font-weight: 600; border-radius: 10px; color: var(--muted);
}
.motifs button svg { width: 100%; height: 30px; }
.motifs button path { stroke: var(--muted); }
.motifs button[aria-checked="true"] { border-color: var(--accent); color: var(--ink); background: color-mix(in srgb, var(--accent) 10%, var(--panel)); }
.motifs button[aria-checked="true"] path { stroke: var(--accent); }

.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chips button { padding: 5px 11px; font-size: 0.85rem; font-weight: 600; border-radius: 999px; }
.chips button[aria-checked="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }

.dot { font-weight: 600; }
.dot.start { color: var(--start); }
.dot.end { color: var(--end); }
.button-row { display: flex; gap: 8px; }
.check { display: flex; gap: 8px; align-items: flex-start; margin: 10px 0; font-size: 0.92rem; }
.row.stack { color: var(--ink); }
.hint { font-size: 0.85rem; color: var(--muted); margin: 6px 0 0; }
.hint.warn { color: var(--accent-2); }
.more summary { cursor: pointer; font-weight: 600; }
.more[open] summary { margin-bottom: 4px; }
.note { font-size: 0.9rem; margin: 0; padding: 10px 12px; border-radius: 10px; background: color-mix(in srgb, var(--accent) 10%, transparent); }
.error { color: var(--error); font-size: 0.9rem; margin: 12px 0 0; }

button, .button {
  font: inherit; font-weight: 600; cursor: pointer; border-radius: 10px; padding: 10px 16px;
  border: 1px solid var(--line); background: var(--panel); color: var(--ink); text-decoration: none;
  display: inline-flex; justify-content: center; align-items: center;
}
button:disabled, .button[aria-disabled="true"] { opacity: 0.5; cursor: not-allowed; }
.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
button.link { background: none; border: 0; padding: 4px 0; color: var(--accent); font-weight: 500; text-decoration: underline; text-underline-offset: 3px; }

.output { display: flex; flex-direction: column; gap: 14px; }
.view-toggle { align-self: flex-end; }
.preview { position: relative; border-radius: 10px; background: var(--bg); overflow: hidden; }
.preview canvas { display: block; width: 100%; height: 440px; touch-action: none; }
body[data-drawing] .preview canvas { cursor: crosshair; }
.summary { margin: 0; color: var(--muted); font-size: 0.92rem; min-height: 1.4em; }
.summary strong { color: var(--ink); }
.summary .warn { color: var(--accent-2); }

.downloads { display: flex; flex-direction: column; gap: 10px; }
.downloads > .primary { align-self: flex-start; }
.formats { display: flex; flex-wrap: wrap; gap: 6px; }
.formats button { padding: 5px 10px; font-size: 0.82rem; border-radius: 8px; }
.paper-row { display: flex; flex-wrap: wrap; gap: 8px; align-items: flex-end; font-size: 0.88rem; color: var(--muted); }
.paper-row label { display: flex; flex-direction: column; gap: 4px; }
.paper-row label:first-child { flex: 1 1 200px; }
.paper-row input { width: 90px; }

.license { border-top: 1px solid var(--line); padding-top: 14px; }
.license p { margin: 0 0 10px; font-size: 0.92rem; color: var(--muted); }
.license-actions { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; }
.key-form { display: flex; gap: 8px; margin-top: 10px; }
.license.nudge { animation: nudge 0.9s ease-in-out 2; border-radius: 10px; }
@keyframes nudge { 50% { background: color-mix(in srgb, var(--accent) 12%, transparent); } }

.content { max-width: 760px; margin: 56px auto 0; }
.content h2 { margin-top: 48px; font-size: 1.6rem; }
.content li { margin-bottom: 6px; }
.machines { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
.machines th, .machines td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.machines th { color: var(--muted); font-weight: 600; }
.plans { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.plan { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 4px 20px 12px; }
.plan.featured { border: 2px solid var(--accent); }
.plan h3 { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.price { color: var(--accent); font-size: 1.4rem; }
.content details { border-bottom: 1px solid var(--line); padding: 12px 0; }
.content details summary { cursor: pointer; font-weight: 600; }

.article { margin-top: 24px; }
.article h1 { font-size: clamp(1.8rem, 4.5vw, 2.4rem); }
.article h3 { margin-top: 28px; }
.article table { width: 100%; border-collapse: collapse; font-size: 0.92rem; display: block; overflow-x: auto; }
.article th, .article td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
.article th { color: var(--muted); font-weight: 600; }
.cta { margin: 48px 0 0; padding: 20px; border: 2px solid var(--accent); border-radius: var(--radius); background: var(--panel); }
.cta p { margin-top: 0; }
.more-guides ul { padding-left: 20px; }
.site-footer .guides { margin-bottom: 8px; }
.site-footer { text-align: center; color: var(--muted); font-size: 0.88rem; padding: 32px 16px; border-top: 1px solid var(--line); }

@media (max-width: 820px) {
  .tool { grid-template-columns: minmax(0, 1fr); }
  .site-header nav { gap: 12px; font-size: 0.88rem; }
  .plans { grid-template-columns: 1fr; }
  .preview canvas { height: 340px; }
  .output { order: -1; } /* preview (and the drawing board) first on phones */
}
@media (max-width: 420px) {
  .site-header nav a:first-child { display: none; }
  .motifs { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
.free-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 16px; margin: 24px 0; }
.free-card { margin: 0; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.free-card img { display: block; width: 100%; height: auto; aspect-ratio: 2; object-fit: cover; background: #f6f1e7; }
.free-card figcaption { display: flex; flex-direction: column; gap: 6px; padding: 12px 14px 14px; }
.free-card figcaption span { color: var(--muted); font-size: 0.88rem; }
.free-card .button { font-size: 0.88rem; padding: 7px 10px; }