#stage { display: flex; flex: 1 1 auto; min-width: 0; }
#stage > section { flex: 1 1 auto; min-width: 0; }

#build { overflow-y: auto; padding: 16px 18px 28px; }

#build-top {
  display: grid;
  grid-template-columns: 210px 1fr;
  align-items: start;
  gap: 14px;
}

#build-top > div { }

#build-tools,
#build-canvas {
  padding: 12px 14px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}

#drawing-tool[size] {
  width: 100%;
  height: auto;
  padding: 0;
  font: var(--note);
  background: var(--ground);
  border-radius: var(--r);
}

#drawing-tool[size] option { padding: 7px 9px; color: var(--ink-2); background: var(--ground); }
#drawing-tool[size] option:checked { color: var(--ground); background: var(--signal); }

#build-hint { margin-bottom: 0; }

#build-canvas #drawing-view { height: 300px; margin: 0; }

#build-scale { padding-left: 0; color: var(--dim); }

#build-parts {
  display: grid;
  gap: .875rem;
  margin-top: .875rem;
}

.part-group {
  padding: 12px 14px 10px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}

.part-group .section { margin-bottom: 6px; }
.part-group .aside.lede { max-width: 88ch; margin-bottom: 11px; }

.part.headings { margin-bottom: 0; padding-bottom: 2px; border-bottom: 0; }

.part.headings span {
  flex: none;
  width: 86px;
  padding: 0 2px;
  font: var(--note);
  color: var(--dim);
}

.part.headings [data-heading="material"],
.part.headings [data-heading="dopant"],
.part.headings [data-heading="kind"],
.part.headings [data-heading="profile"] { width: 88px; }

#drawing-note { max-width: 96ch; margin-top: 14px; }
#drawing-note b { font-weight: 500; color: var(--ink-2); }

#build-empty { max-width: 64ch; }

#drawing:not([hidden]) ~ #build-empty { display: none !important; }

#modes {
  display: flex;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  border-radius: var(--r);
}

#modes button {
  padding: 5px 13px;
  background: transparent;
  border: 0;
}

#modes button[aria-selected="true"] { color: var(--ground); background: var(--signal); }

#modes button[aria-selected="true"]:hover { background: var(--signal-lift); }

.swatch.rejected { background: var(--ink); }

#build-scale .swatch { width: 10px; height: 10px; border-radius: var(--r-xs); }

#build-scale .block-si { background: var(--fill-si); }
#build-scale .block-ox { background: var(--fill-ox); border: 1px solid var(--line-strong); }

#build-scale .dope-n {
  background: var(--warn-wash);
  border: 1px dashed var(--warn);
}

#build-scale .dope-p {
  background: var(--signal-wash);
  border: 1px dashed var(--signal);
}

#build-scale .gate { background: var(--violet); }
#build-scale .ohmic { background: var(--ink); }
#build-scale .extent { margin-left: auto; color: var(--dim); }

#modes button { border-radius: 0 }