#gsi-app {
  --gsi-paper: #ffffff;
  --gsi-ink: #1d2329;
  --gsi-muted: #5b6570;
  --gsi-rule: #d6dbe0;
  --gsi-field: #f3f5f7;
  --gsi-table: #47505a;
  --gsi-grid: rgba(255, 255, 255, 0.07);
  --gsi-magenta: #e4007c;
  --gsi-magenta-dark: #b30062;
  --gsi-go: #ee7d45;
  --gsi-head: #476f5a;
  --gsi-go-dark: #d9652c;
  --gsi-ok: #1e7a4c;
  --gsi-err: #b42318;
  font-family: "Barlow", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  color: var(--gsi-ink);
  background: var(--gsi-paper);
  text-align: left;
  max-width: 1180px;
  margin: 0 auto;
  box-sizing: border-box;
}
#gsi-app *, #gsi-app *::before, #gsi-app *::after { box-sizing: border-box; }
#gsi-app h2, #gsi-app h3, #gsi-app p { margin: 0; padding: 0; letter-spacing: normal; text-transform: none; }

#gsi-app .gsi-head { padding: 0 0 24px; border-bottom: 2px solid var(--gsi-ink); margin-bottom: 28px; }
#gsi-app .gsi-title {
  font-family: "Barlow Semi Condensed", "Barlow", sans-serif;
  font-weight: 700; font-size: clamp(2rem, 4vw, 2.75rem); line-height: 1.05; color: var(--gsi-ink);
}
#gsi-app .gsi-lede { margin-top: 10px; max-width: 62ch; color: var(--gsi-muted); font-size: 1.0625rem; }

#gsi-app .gsi-grid { display: grid; grid-template-columns: minmax(300px, 400px) 1fr; gap: 32px; align-items: start; }
@media (max-width: 860px) { #gsi-app .gsi-grid { grid-template-columns: 1fr; } }

#gsi-app .gsi-field { margin-bottom: 22px; }
#gsi-app .gsi-label { display: block; font-weight: 600; font-size: 0.9375rem; margin-bottom: 6px; }
#gsi-app .gsi-hint { font-size: 0.875rem; color: var(--gsi-muted); margin-top: 4px; }

/* drop zone */
#gsi-app .gsi-drop {
  display: block; border: 2px dashed #aab3bc; border-radius: 6px; padding: 22px 18px;
  background: var(--gsi-field); cursor: pointer; text-align: center; transition: border-color .15s, background .15s;
}
#gsi-app .gsi-drop:hover, #gsi-app .gsi-drop.is-over { border-color: var(--gsi-magenta); background: #fdf0f7; }
#gsi-app .gsi-drop:focus-within { outline: 3px solid var(--gsi-magenta); outline-offset: 2px; }
#gsi-app .gsi-drop strong { display: block; font-size: 1.0625rem; }
#gsi-app .gsi-drop span { font-size: 0.875rem; color: var(--gsi-muted); }
#gsi-app .gsi-drop input { position: absolute; width: 1px; height: 1px; opacity: 0; overflow: hidden; }

/* file rows */
#gsi-app .gsi-files { list-style: none; margin: 12px 0 0; padding: 0; }
#gsi-app .gsi-file {
  display: grid; grid-template-columns: 52px 1fr auto; gap: 12px; align-items: center;
  padding: 10px 0; border-top: 1px solid var(--gsi-rule); margin: 0;
}
#gsi-app .gsi-file:last-child { border-bottom: 1px solid var(--gsi-rule); }
#gsi-app .gsi-thumb { width: 52px; height: 52px; display: flex; align-items: center; justify-content: center; background: var(--gsi-field); }
#gsi-app .gsi-thumb canvas { max-width: 52px; max-height: 52px; box-shadow: 0 0 0 1px var(--gsi-rule); }
#gsi-app .gsi-fname { font-weight: 600; font-size: 0.9375rem; overflow-wrap: break-word; line-height: 1.3; min-width: 0; }
#gsi-app .gsi-fmeta { font-size: 0.8125rem; color: var(--gsi-muted); }
#gsi-app .gsi-fmeta.is-err { color: var(--gsi-err); }
#gsi-app .gsi-size { display: flex; gap: 4px; align-items: center; margin-top: 4px; font-size: 0.8125rem; color: var(--gsi-muted); }
#gsi-app .gsi-size input { width: 58px; }
#gsi-app .gsi-qty { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
#gsi-app .gsi-qty label { font-size: 0.75rem; color: var(--gsi-muted); }
#gsi-app .gsi-qty input { width: 64px; text-align: right; }

#gsi-app input[type="text"], #gsi-app input[type="number"] {
  font: inherit; font-size: 0.9375rem; color: var(--gsi-ink); background: var(--gsi-paper);
  border: 1px solid #b7c0c8; border-radius: 4px; padding: 6px 8px; margin: 0; height: auto; box-shadow: none;
}
#gsi-app input[type="text"] { width: 100%; }
#gsi-app input:focus-visible { outline: 3px solid var(--gsi-magenta); outline-offset: 1px; border-color: var(--gsi-ink); }

/* material chips */
#gsi-app .gsi-mats { display: flex; flex-wrap: wrap; gap: 8px; border: 0; padding: 0; margin: 0; }
#gsi-app .gsi-mats legend { padding: 0; }
#gsi-app .gsi-chip { position: relative; }
#gsi-app .gsi-chip input { position: absolute; opacity: 0; inset: 0; margin: 0; cursor: pointer; }
#gsi-app .gsi-chip span {
  display: block; padding: 7px 12px; border: 1px solid #b7c0c8; border-radius: 999px;
  font-size: 0.9375rem; background: var(--gsi-paper); line-height: 1.2;
}
#gsi-app .gsi-chip input:checked + span { background: var(--gsi-ink); color: #fff; border-color: var(--gsi-ink); }
#gsi-app .gsi-chip input:focus-visible + span { outline: 3px solid var(--gsi-magenta); outline-offset: 2px; }
#gsi-app .gsi-check { display: flex; gap: 8px; align-items: flex-start; font-size: 0.875rem; margin-top: 10px; }
#gsi-app .gsi-check input { margin-top: 4px; }
#gsi-app .gsi-check[hidden] { display: none; }
#gsi-app .gsi-bleed { display: flex; flex-wrap: wrap; gap: 6px 10px; align-items: center; margin-top: 6px; font-size: 0.8125rem; }
#gsi-app .gsi-bleed label { display: flex; gap: 6px; align-items: center; font-weight: 600; color: var(--gsi-ink); }
#gsi-app .gsi-bleed input { margin: 0; }
#gsi-app .gsi-bleed select {
  font: inherit; font-size: 0.8125rem; color: var(--gsi-ink); background: var(--gsi-paper);
  border: 1px solid #b7c0c8; border-radius: 4px; padding: 3px 6px; margin: 0; height: auto; width: auto;
}
#gsi-app .gsi-bleed select:disabled { opacity: .5; }
#gsi-app .gsi-bleed select:focus-visible, #gsi-app .gsi-check input:focus-visible, #gsi-app .gsi-bleed input:focus-visible { outline: 3px solid var(--gsi-magenta); outline-offset: 1px; }

/* buttons */
#gsi-app .gsi-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: inherit; font-weight: 600; font-size: 1rem; line-height: 1.2; text-decoration: none; text-transform: none; letter-spacing: normal;
  padding: 12px 20px; border-radius: 4px; border: 2px solid var(--gsi-magenta);
  background: var(--gsi-magenta); color: #fff; cursor: pointer; box-shadow: none;
}
#gsi-app .gsi-btn:hover { background: var(--gsi-magenta-dark); border-color: var(--gsi-magenta-dark); color: #fff; }
#gsi-app .gsi-btn:focus-visible { outline: 3px solid var(--gsi-ink); outline-offset: 2px; }
#gsi-app .gsi-btn[disabled] { opacity: .45; cursor: not-allowed; }
#gsi-app .gsi-btn.is-quiet { background: transparent; color: var(--gsi-ink); border-color: var(--gsi-ink); }
#gsi-app .gsi-btn.is-quiet:hover { background: var(--gsi-ink); color: #fff; }
#gsi-app .gsi-x {
  font: inherit; font-size: 0.8125rem; background: none; border: 0; padding: 2px 0; margin: 0; color: var(--gsi-muted);
  text-decoration: underline; cursor: pointer; box-shadow: none;
}
#gsi-app .gsi-x:hover { color: var(--gsi-err); background: none; }
#gsi-app .gsi-x:focus-visible { outline: 2px solid var(--gsi-magenta); }

#gsi-app .gsi-msg { margin-top: 14px; padding: 10px 12px; border-left: 4px solid var(--gsi-err); background: #fdf1f0; font-size: 0.9375rem; }
#gsi-app .gsi-msg[hidden] { display: none; }
#gsi-app .gsi-note { margin-top: 10px; font-size: 0.875rem; color: var(--gsi-muted); }

/* the cutting table */
#gsi-app .gsi-table {
  background-color: var(--gsi-table);
  background-image: linear-gradient(var(--gsi-grid) 1px, transparent 1px), linear-gradient(90deg, var(--gsi-grid) 1px, transparent 1px);
  background-size: 24px 24px;
  border-radius: 6px; padding: 24px; min-height: 420px; color: #e9edf1;
}
#gsi-app .gsi-empty { max-width: 34ch; color: #cfd6dd; font-size: 1rem; padding-top: 8px; }
#gsi-app .gsi-empty b { color: #fff; font-weight: 600; }
#gsi-app .gsi-sum { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 20px; }
#gsi-app .gsi-sum p { font-size: 1.125rem; color: #fff; font-weight: 600; }
#gsi-app .gsi-sum .gsi-btn.is-quiet { color: #fff; border-color: #fff; }
#gsi-app .gsi-sum .gsi-btn.is-quiet:hover { background: #fff; color: var(--gsi-ink); }
#gsi-app .gsi-sheets { display: flex; flex-wrap: wrap; gap: 28px 24px; align-items: flex-end; }
#gsi-app .gsi-sheet { margin: 0; }
#gsi-app .gsi-stage { position: relative; background: #fff; box-shadow: 0 6px 18px rgba(0, 0, 0, .35); }
#gsi-app .gsi-stage canvas, #gsi-app .gsi-stage svg { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
#gsi-app .gsi-sheet figcaption { margin-top: 10px; font-size: 0.875rem; color: #dfe5ea; line-height: 1.35; min-width: 200px; }
#gsi-app .gsi-sheet figcaption b { display: block; color: #fff; font-weight: 600; overflow-wrap: break-word; }
#gsi-app .gsi-dl { display: flex; gap: 12px; margin-top: 4px; }
#gsi-app .gsi-dl a { color: #fff; font-weight: 600; text-decoration: underline; text-underline-offset: 3px; }
#gsi-app .gsi-dl a:hover { color: #ffd0e8; }
#gsi-app .gsi-dl a:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
#gsi-app .gsi-busy { color: #fff; font-weight: 600; }
#gsi-app .gsi-foot { margin-top: 18px; font-size: 0.8125rem; color: var(--gsi-muted); max-width: 70ch; }
@media (prefers-reduced-motion: reduce) { #gsi-app * { transition: none !important; } }

#gsi-app .gsi-inline { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 8px; font-size: 0.9375rem; }
#gsi-app .gsi-inline > label { min-width: 0; }
#gsi-app .gsi-inline input[type="number"] { width: 84px; }
#gsi-app .gsi-inline input[type="number"]:disabled { opacity: .5; }
#gsi-app .gsi-inline-check { display: flex; gap: 8px; align-items: center; }
#gsi-app .gsi-inline-check input { margin: 0; }
#gsi-app .gsi-inline-check input:focus-visible { outline: 3px solid var(--gsi-magenta); outline-offset: 1px; }

/* "Lay out sheets" button colour */
#gsi-app .gsi-btn.gsi-go { background: var(--gsi-go); border-color: var(--gsi-go); color: #fff; }
#gsi-app .gsi-btn.gsi-go:hover { background: var(--gsi-go-dark); border-color: var(--gsi-go-dark); color: #fff; }

/* header colour */
#gsi-app .gsi-head .gsi-title { color: var(--gsi-head); }