/* Public constructor, using the catalog's warm surface and accent tokens. */
.bb-main { max-width: 1120px; }
.bb-back { color: var(--fg2); font-size: 14px; }
.bb-heading { margin: 28px 0; }
.bb-kicker { margin-bottom: 10px; color: var(--accent-text); font-weight: 700; }
.bb-heading h1 { margin: 0 0 12px; overflow-wrap: anywhere; }
.bb-heading > p:last-child { color: var(--fg2); max-width: 64ch; }
.bb-workspace { display: grid; grid-template-columns: minmax(200px, 260px) minmax(0, 1fr); gap: 24px; align-items: start; }
.bb-controls { display: grid; gap: 20px; margin: 0; }
.bb-controls label { display: grid; gap: 8px; font-weight: 600; }
.bb-controls select { width: 100%; min-height: 44px; padding: 10px 12px; font: inherit; color: var(--fg); background: var(--surface); border: 1px solid var(--border); border-radius: var(--r-sm); }
.bb-preview-panel { margin: 0; min-width: 0; }
.bb-preview-heading h2 { margin-top: 0; }
.bb-preview-heading span, .bb-note { color: var(--fg2); font-size: 14px; line-height: 1.6; }
.bb-preview-stage { min-height: 240px; display: grid; place-items: center; padding: 24px 0; overflow: auto; }
.bb-preview-stage img { max-width: 100%; height: auto; }
.bb-snippets { grid-column: 2; margin: 0; min-width: 0; }
.bb-code { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 10px; margin-bottom: 22px; }
.bb-code label { font-weight: 600; }
.bb-code textarea { grid-column: 1 / -1; resize: vertical; box-sizing: border-box; width: 100%; padding: 14px; color: var(--fg); background: var(--surface2); border: 1px solid var(--border); border-radius: var(--r-sm); font: 13px/1.6 var(--font-mono, monospace); }
.bb-notice:empty { display: none; }
.bb-notice { overflow-wrap: anywhere; color: var(--accent-text); }
.bb-workspace :focus-visible { outline: 2px solid var(--accent-text); outline-offset: 3px; }
@media (max-width: 700px) {
 .bb-workspace { grid-template-columns: minmax(0, 1fr); gap: 18px; }
 .bb-controls { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; }
 .bb-controls > p, .bb-snippets { grid-column: 1 / -1; }
 .bb-preview-stage { min-height: 160px; }
 .bb-code { gap: 8px; }
}