:root {
  --bg: #f7f5f0; --panel: #ffffff; --panel-2: #efece5; --text: #1c1b18; --muted: #6a665e;
  --accent: #2f6b4f; --accent-strong: #24553e; --on-accent: #ffffff; --error: #a3402b;
  --c-object: #2f6b4f; --c-character: #8a5a1f; --c-text: #2d5aa8; --canvas: #e9e5dc;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141412; --panel: #1d1c1a; --panel-2: #262522; --text: #ecebe7; --muted: #9c978d;
    --accent: #6fbf95; --accent-strong: #3f8a63; --on-accent: #ffffff; --error: #ff8c73;
    --c-object: #6fbf95; --c-character: #e0a85a; --c-text: #82a8f0; --canvas: #2a2926;
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text);
  font: 16px/1.6 ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
main { max-width: 820px; margin: 0 auto; padding: 40px 16px 64px; }
h1 { font-size: 34px; line-height: 1.15; margin: 0 0 10px; letter-spacing: -0.01em; }
h2 { font-size: 22px; margin: 40px 0 10px; }
h3 { font-size: 17px; margin: 22px 0 6px; }
.lead { font-size: 18px; color: var(--muted); margin: 0 0 24px; }
.muted { color: var(--muted); }
a { color: var(--accent); }
code { background: var(--panel-2); padding: 1px 5px; border-radius: 5px; font-size: 0.9em; }

.tool { background: var(--panel); border-radius: 16px; padding: 20px; }
.label { display: block; font-weight: 600; margin-bottom: 6px; }
textarea { width: 100%; resize: vertical; font: inherit; color: inherit; background: var(--panel-2);
  border: 0; border-radius: 11px; padding: 12px 14px; }
textarea:focus, select:focus, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.examples { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 10px 0 14px; font-size: 14px; }
.chip { border: 0; background: var(--panel-2); color: var(--text); border-radius: 999px; padding: 6px 12px;
  font: inherit; cursor: pointer; min-height: 36px; }
.controls { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.seg { display: inline-flex; background: var(--panel-2); border-radius: 11px; padding: 3px; }
.seg button { border: 0; background: transparent; color: var(--muted); font: inherit; padding: 8px 14px;
  border-radius: 9px; cursor: pointer; min-height: 40px; }
.seg button[aria-checked="true"] { background: var(--panel); color: var(--text); font-weight: 600; }
.canvas { display: inline-flex; gap: 8px; align-items: center; color: var(--muted); }
select { font: inherit; color: var(--text); background: var(--panel-2); border: 0; border-radius: 9px; padding: 9px 10px; min-height: 44px; }
.primary { margin-left: auto; border: 0; background: var(--accent-strong); color: var(--on-accent); font: inherit;
  font-weight: 600; border-radius: 11px; padding: 10px 20px; cursor: pointer; min-height: 44px; }
.primary:disabled { opacity: 0.6; cursor: progress; }
.secondary { border: 0; background: var(--panel-2); color: var(--text); font: inherit; border-radius: 9px;
  padding: 8px 14px; cursor: pointer; min-height: 40px; }
.count { font-size: 13px; text-align: right; margin: 6px 0 0; }
.status { margin-top: 12px; min-height: 1.4em; color: var(--muted); }
.status.error { color: var(--error); }

.result { margin-top: 18px; }
.result-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; }
.result-head h2 { margin: 0; font-size: 18px; }
.dims { font-weight: 600; color: var(--accent); margin: 8px 0; }
.prompt { white-space: pre-wrap; word-break: break-word; background: var(--panel-2); border-radius: 11px;
  padding: 14px; margin: 10px 0; font: 14px/1.55 ui-monospace, SFMono-Regular, Menlo, monospace; max-height: 420px; overflow: auto; }
.prompt.small { font-size: 12px; }
.preview { margin: 14px 0; }
.preview svg { width: 100%; height: auto; max-height: 520px; display: block; border-radius: 11px; }
.canvas-bg { fill: var(--canvas); }
.box { fill-opacity: 0.14; stroke-width: 3; }
.preview text { fill: var(--text); font-family: ui-sans-serif, sans-serif; }
details summary { cursor: pointer; }
.faq details { background: var(--panel); border-radius: 13px; padding: 12px 16px; margin: 8px 0; }
.faq summary { font-weight: 600; }
footer { margin-top: 48px; font-size: 14px; }
@media (max-width: 560px) {
  h1 { font-size: 28px; }
  .primary { margin-left: 0; width: 100%; }
  .tool { padding: 16px; }
}