.builder {
  display: grid;
  grid-template-columns: 180px 1fr 260px;
  min-height: calc(100vh - 56px - 41px);
}

.palette, .inspector {
  background: var(--surface);
  border-right: 1px solid var(--line);
  padding: 16px 14px;
}

.inspector { border-right: 0; border-left: 1px solid var(--line); }

.palette h2, .inspector h2 {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.palette button {
  display: block;
  width: 100%;
  text-align: left;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  margin-bottom: 8px;
  cursor: pointer;
}

.palette button:hover { border-color: var(--ink); }

.canvas-wrap { padding: 20px 24px 40px; }

.canvas-head input {
  width: 100%;
  border: 0;
  background: transparent;
  font-size: 22px;
  font-weight: 650;
  letter-spacing: -0.03em;
  padding: 0;
  outline: none;
}

.hint { color: var(--muted); font-size: 12px; margin: 6px 0 16px; }

.canvas { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }

.field {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  cursor: pointer;
}

.field.is-on { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.field .meta { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; }
.field strong { display: block; margin: 4px 0 6px; }
.field .fake {
  height: 32px;
  border: 1px dashed var(--line-strong);
  border-radius: 6px;
  background: var(--bg);
}

.inspector label { display: block; margin-bottom: 12px; font-size: 12px; font-weight: 600; }
.inspector input, .inspector textarea {
  display: block;
  width: 100%;
  margin-top: 4px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  background: #fff;
}
.inspector .check { display: flex; align-items: center; gap: 8px; font-weight: 500; }
.inspector .check input { width: auto; margin: 0; }

dialog { border: 0; border-radius: 12px; padding: 0; width: min(520px, 92vw); }
dialog::backdrop { background: rgba(18,20,23,0.35); }
.preview-card { padding: 18px; }
.preview-card header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.preview-card label { display: block; margin-bottom: 12px; font-size: 13px; font-weight: 600; }
.preview-card input, .preview-card textarea, .preview-card select {
  display: block; width: 100%; margin-top: 4px; border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 10px;
}

@media (max-width: 900px) {
  .builder { grid-template-columns: 1fr; }
  .palette, .inspector { border: 0; border-bottom: 1px solid var(--line); }
}