/* ===== shared base (index / cgl) ===== */
:root {
  --bg: rgb(248, 247, 244);
  --text: rgb(27, 36, 48);
  --accent: #1d6f42;
}

body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  margin: 0;
  width: 100%;
  min-height: 100vh;
  padding: 32px;
  font-family: "lucida grande", tahoma, verdana, arial, helvetica, sans-serif;
  color: var(--text);
  background: var(--bg);
  box-sizing: border-box;
}

* { box-sizing: border-box; }

.center { text-align: center; }

h1.center { color: var(--accent); }

.canvas-row {
  display: flex;
  flex-direction: row;
  flex-wrap: nowrap;
  justify-content: center;
  gap: 24px;
  max-width: 100%;
  overflow-x: auto;
}

.canvas-row > cgl-3d { flex: none; }

.links-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

a.card {
  display: block;
  width: 300px;
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 16px 20px;
  text-decoration: none;
  color: inherit;
}
a.card:hover { border-color: var(--accent); }
a.card b { display: block; color: var(--accent); margin-bottom: 4px; }
a.card span { font-size: 0.85rem; color: #666; }

/* ===== tool pages (box, stencil) ===== */
body.tool {
  flex-direction: row;
  align-items: stretch;
  gap: 0;
  padding: 0;
  font-family: system-ui, sans-serif;
  background: #f4f1ea;
  color: #2b2b2b;
}

body.tool aside {
  width: 260px;
  padding: 20px;
  background: #fff;
  border-right: 1px solid #ddd;
  flex-shrink: 0;
}

body.tool a.back {
  display: block;
  font-size: 0.8rem;
  margin-bottom: 10px;
  color: var(--accent);
  text-decoration: none;
}
body.tool a.back:hover { text-decoration: underline; }

body.tool h1 { font-size: 1.1rem; margin: 0 0 16px; color: var(--accent); }

body.tool label {
  display: block;
  font-size: 0.8rem;
  margin: 10px 0 3px;
  color: #555;
}

body.tool input[type=number],
body.tool input[type=text],
body.tool select {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 0.95rem;
  background: #fff;
}

body.tool .chk {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 14px;
  font-size: 0.85rem;
}
body.tool .chk label { margin: 0; }

body.tool button {
  width: 100%;
  margin-top: 18px;
  padding: 10px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 0.95rem;
  cursor: pointer;
}
body.tool button:hover { background: #175935; }

body.tool button.secondary {
  margin-top: 10px;
  padding: 6px;
  background: #f1f1f1;
  color: #2b2b2b;
  border: 1px solid #ccc;
}
body.tool button.secondary:hover { background: #e4e4e4; }

body.tool #warnings { margin-top: 12px; font-size: 0.8rem; color: #b03a2e; }
body.tool #warnings div { margin-bottom: 6px; }
body.tool #computed { margin-top: 8px; font-size: 0.8rem; color: #555; }

body.tool main { flex: 1; padding: 20px; overflow: auto; }

body.tool #preview {
  background: #fff;
  border: 1px solid #ddd;
  border-radius: 8px;
  padding: 12px;
}
body.tool #preview svg { width: 100%; height: auto; display: block; }

body.tool .hint {
  font-size: 0.75rem;
  color: #888;
  margin-top: 10px;
  line-height: 1.4;
}