.studio-canvas { align-content: start; min-width: 0; }
.studio-canvas [hidden], .studio-create-layout [hidden] { display: none !important; }
.studio-model-stage { display: block; min-height: 440px; background: #efece8; perspective: none; }
.studio-model-stage::before { display: none; }
#studioViewport { width: 100%; height: 440px; touch-action: pan-y; }
#studioViewport canvas { display: block; width: 100%; height: 100%; touch-action: none; }
#studioViewport canvas:focus-visible { outline: 3px solid #b72432; outline-offset: -4px; }
.studio-viewer-fallback { position: absolute; top: 42%; left: 10%; right: 10%; margin: 0; color: #4b4845; text-align: center; line-height: 1.5; }
.studio-model-caption { position: absolute; bottom: 14px; left: 14px; max-width: calc(100% - 28px); padding: 7px 11px; background: rgba(255,255,255,.93); border: 1px solid #d9d4cf; border-radius: 7px; color: #514b47; font-size: 11px; pointer-events: none; }
.studio-viewer-toolbar { display: flex; flex-wrap: wrap; gap: 7px; }
.studio-viewer-toolbar button { min-height: 38px; padding: 0 12px; border: 1px solid #ccc; border-radius: 6px; background: #fff; color: #272727; font: inherit; font-size: 12px; font-weight: 750; cursor: pointer; }
.studio-viewer-toolbar button:disabled, #studioGenerate:disabled { opacity: .48; cursor: not-allowed; }
.studio-viewer-toolbar button:focus-visible, .studio-part-list button:focus-visible { outline: 3px solid #b72432; outline-offset: 2px; }
.studio-viewer-help { margin: -5px 0 2px; color: #666; font-size: 12px; }
.studio-generate-form { display: grid; gap: 10px; padding: 19px; border: 1px solid #dfd5d3; border-radius: 10px; background: #fff; }
.studio-generate-form label { font-size: 13px; font-weight: 800; color: #333; }
.studio-generate-form label span { color: #777; font-weight: 500; }
.studio-generate-form textarea { width: 100%; padding: 12px; border: 1px solid #ccc; border-radius: 6px; resize: vertical; color: #222; font: inherit; font-size: 14px; line-height: 1.5; }
.studio-generate-form textarea:focus { outline: 3px solid #f7d9dc; border-color: #b72432; }
.studio-generate-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.studio-generate-actions a { color: #a71e2b; font-size: 13px; font-weight: 750; }
.studio-generate-form small { color: #777; font-size: 11px; line-height: 1.5; }
#studioGenerationStatus { margin: 0; color: #545454; font-size: 13px; line-height: 1.5; }
#studioGenerationStatus[data-tone="error"] { color: #af1c2a; }
#studioGenerationStatus[data-tone="success"] { color: #126248; }
.studio-generate-form[aria-busy="true"] #studioGenerate::before { content: ""; width: 13px; height: 13px; border: 2px solid #ffffff50; border-top-color: #fff; border-radius: 50%; animation: studio-spin 1s linear infinite; }
@keyframes studio-spin { to { transform: rotate(360deg); } }
.studio-model-result { padding: 20px; border: 1px solid #d9d4cf; border-radius: 10px; background: #fff; }
.studio-model-result h3 { margin: 0 0 8px; font-size: 21px; color: #222; }
.studio-model-result p, .studio-model-result li { color: #555; font-size: 14px; line-height: 1.55; }
.studio-model-result p { margin: 0 0 14px; }
.studio-model-result h4 { margin: 18px 0 9px; font-size: 14px; color: #333; }
.studio-model-result ol { margin: 0; padding-left: 20px; }
.studio-model-result li + li { margin-top: 8px; }
.studio-model-result summary { padding: 11px 0; font-size: 13px; font-weight: 800; cursor: pointer; color: #333; }
.studio-part-list { display: grid; gap: 5px; max-height: 260px; overflow-y: auto; }
.studio-part-list button { display: grid; grid-template-columns: 13px 1fr; gap: 7px 10px; padding: 10px; border: 1px solid #eee; border-radius: 6px; background: #fafafa; text-align: left; cursor: pointer; font: inherit; font-size: 12px; }
.studio-part-list button i { width: 12px; height: 12px; margin-top: 2px; border-radius: 4px; }
.studio-part-list button strong { color: #333; }
.studio-part-list button span { grid-column: 2; color: #666; line-height: 1.4; }
.studio-part-list button[aria-pressed="true"] { border-color: #b72432; background: #fff4f4; }
.studio-detail-grid dd, .studio-summary, .studio-idea strong, .studio-idea span, .studio-model-result { overflow-wrap: anywhere; }
.studio-layout { align-items: start; }
@media (min-width: 1101px) { #studioIdeaList { max-height: 880px; overflow-y: auto; padding: 3px; } }
@media (max-width: 720px) { #studioViewport { height: 330px; } .studio-model-stage { min-height: 330px; } .studio-generate-form { padding: 14px; } .studio-canvas .section-head { flex-wrap: wrap; } }
@media (prefers-reduced-motion: reduce) { .studio-generate-form[aria-busy="true"] #studioGenerate::before { animation: none; } }