:root {
  color-scheme: dark;
  --studio-bg: #08090d;
  --studio-panel: #0d0f14;
  --studio-panel-2: #11141a;
  --studio-line: #292d35;
  --studio-line-strong: #424955;
  --studio-text: #f2f1ec;
  --studio-muted: #979da8;
  --studio-dim: #646a75;
  --studio-accent: #d6ff73;
  --studio-cyan: #79d9ef;
  --studio-amber: #f2bb63;
  --studio-danger: #ff7e78;
  --studio-font: "Noto Sans SC", sans-serif;
  --studio-mono: "JetBrains Mono", monospace;
  --studio-display: "Space Grotesk", "Noto Sans SC", sans-serif;
}

* { box-sizing: border-box; }
html, body { width: 100%; min-height: 100%; margin: 0; }
body { overflow: hidden; background: var(--studio-bg); color: var(--studio-text); font-family: var(--studio-font); font-size: 14px; }
button, input, textarea, select { color: inherit; font: inherit; letter-spacing: 0; }
button, select, input, textarea { border: 1px solid var(--studio-line); border-radius: 4px; background: #111319; }
button { min-height: 34px; padding: 0 12px; cursor: pointer; }
button:hover, button:focus-visible, select:focus, input:focus, textarea:focus { border-color: var(--studio-line-strong); outline: none; }
button:focus-visible, a:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible { box-shadow: 0 0 0 2px rgba(121, 217, 239, .35); }
button:disabled { cursor: not-allowed; opacity: .42; }
a { color: inherit; text-decoration: none; }
.studio-icon { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.studio-primary { border-color: var(--studio-accent); background: var(--studio-accent); color: #0a0c08; font-weight: 600; }
.studio-primary:hover { border-color: #e7ffa9; background: #e7ffa9; }
.studio-icon-button { display: inline-grid; width: 34px; min-width: 34px; height: 34px; padding: 0; place-items: center; }
.studio-kicker { margin: 0 0 5px; color: var(--studio-muted); font: 500 10px/1.2 var(--studio-mono); text-transform: uppercase; }
.studio-empty { margin: 30px 0; color: var(--studio-dim); text-align: center; }

.studio-loading, .studio-auth { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; background: var(--studio-bg); }
.studio-loading[hidden], .studio-auth[hidden], .studio-app[hidden] { display: none; }
.studio-loading { align-content: center; gap: 12px; color: var(--studio-muted); font: 12px var(--studio-mono); }
.studio-loading-mark { width: 46px; height: 1px; background: var(--studio-accent); animation: studio-scan 1.2s ease-in-out infinite; }
@keyframes studio-scan { 50% { width: 120px; background: var(--studio-cyan); } }
.studio-auth-panel { width: min(420px, calc(100vw - 32px)); border: 1px solid var(--studio-line); padding: 34px; background: var(--studio-panel); }
.studio-auth-panel h1 { margin: 0; font: 600 28px/1.1 var(--studio-display); }
.studio-auth-panel > p:not(.studio-kicker) { color: var(--studio-muted); }
.studio-auth-panel label { display: grid; gap: 8px; margin: 28px 0 12px; color: var(--studio-muted); font-size: 12px; }
.studio-auth-panel input { height: 44px; padding: 0 12px; }
.studio-auth-panel button { width: 100%; height: 42px; }
.studio-auth-status { min-height: 18px; margin: 12px 0 0 !important; color: var(--studio-danger) !important; font-size: 12px; }

.studio-app { height: 100vh; min-height: 620px; }
.studio-topbar { display: grid; grid-template-columns: auto minmax(130px, 1fr) auto auto; align-items: center; height: 58px; border-bottom: 1px solid var(--studio-line); background: #0a0c10; }
.studio-brand { display: flex; align-items: center; gap: 9px; height: 100%; padding: 0 18px; border-right: 1px solid var(--studio-line); font: 600 15px var(--studio-display); }
.studio-brand .studio-icon { color: var(--studio-accent); }
.studio-brand small { color: var(--studio-dim); font: 500 9px var(--studio-mono); }
.studio-sync { display: flex; align-items: center; gap: 8px; min-width: 0; padding: 0 16px; color: var(--studio-muted); font: 11px var(--studio-mono); }
.studio-sync i { width: 6px; height: 6px; border-radius: 50%; background: var(--studio-dim); }
.studio-sync[data-state="synced"] i, .studio-sync[data-state="published"] i { background: var(--studio-accent); box-shadow: 0 0 10px rgba(214, 255, 115, .5); }
.studio-sync[data-state="dirty"] i, .studio-sync[data-state="saving"] i, .studio-sync[data-state="publishing"] i { background: var(--studio-amber); }
.studio-sync[data-state="conflict"] i, .studio-sync[data-state="offline"] i, .studio-sync[data-state="publish-error"] i { background: var(--studio-danger); }
.studio-history-controls, .studio-top-actions { display: flex; align-items: center; gap: 6px; }
.studio-history-controls { padding-right: 12px; }
.studio-top-actions { height: 100%; padding: 0 12px; border-left: 1px solid var(--studio-line); }
.studio-top-actions button { display: inline-flex; align-items: center; gap: 7px; white-space: nowrap; }

.studio-mobile-tabs { display: none; }
.studio-workspace { display: grid; grid-template-columns: minmax(238px, 16vw) minmax(360px, 30vw) minmax(480px, 1fr); height: calc(100vh - 58px); }
.studio-tree-panel, .studio-editor-panel, .studio-preview-panel { min-width: 0; min-height: 0; background: var(--studio-panel); }
.studio-tree-panel, .studio-editor-panel { border-right: 1px solid var(--studio-line); }
.studio-panel-heading, .studio-editor-heading { display: flex; align-items: center; justify-content: space-between; min-height: 78px; padding: 16px 18px; border-bottom: 1px solid var(--studio-line); }
.studio-panel-heading h1, .studio-editor-heading h2 { margin: 0; font: 600 17px/1.2 var(--studio-display); }
.studio-panel-heading > span { color: var(--studio-dim); font: 11px var(--studio-mono); }
.studio-search { display: flex; align-items: center; gap: 9px; height: 42px; margin: 12px; padding: 0 10px; border: 1px solid var(--studio-line); background: #0a0c10; }
.studio-search .studio-icon { color: var(--studio-dim); }
.studio-search input { width: 100%; height: 100%; padding: 0; border: 0; background: transparent; }
.studio-tree { height: calc(100% - 134px); padding: 0 8px 24px; overflow: auto; }
.studio-tree-group { margin: 12px 0 0; }
.studio-tree-group > button { display: flex; align-items: center; width: 100%; gap: 8px; border: 0; background: transparent; color: var(--studio-muted); font: 500 10px var(--studio-mono); text-align: left; text-transform: uppercase; }
.studio-tree-group > button .studio-icon { width: 13px; height: 13px; }
.studio-tree-group > button span:last-child { margin-left: auto; color: var(--studio-dim); }
.studio-tree-items { display: grid; gap: 2px; }
.studio-tree-item { display: grid; grid-template-columns: 26px minmax(0, 1fr) auto; align-items: center; min-height: 38px; padding: 4px 8px; border: 0; background: transparent; color: #c6c9d0; text-align: left; }
.studio-tree-item:hover { background: #14171d; }
.studio-tree-item.is-active { background: #1a1e24; color: var(--studio-text); box-shadow: inset 2px 0 var(--studio-accent); }
.studio-tree-item .studio-icon { width: 14px; height: 14px; color: var(--studio-dim); }
.studio-tree-item span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.studio-tree-item small { color: var(--studio-dim); font: 9px var(--studio-mono); }

.studio-editor-panel { display: grid; grid-template-rows: auto minmax(0, 1fr); }
.studio-node-actions { display: flex; gap: 6px; }
.studio-node-actions button { min-height: 30px; padding: 0 9px; font-size: 12px; }
.studio-node-actions .is-danger { color: var(--studio-danger); }
.studio-editor-scroll { overflow: auto; padding: 20px; }
.studio-overview { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); border-top: 1px solid var(--studio-line); }
.studio-overview-metric { min-height: 105px; padding: 18px 0; border-bottom: 1px solid var(--studio-line); }
.studio-overview-metric:nth-child(odd) { border-right: 1px solid var(--studio-line); }
.studio-overview-metric:nth-child(even) { padding-left: 18px; }
.studio-overview-metric span, .studio-overview-line span { color: var(--studio-muted); font-size: 11px; }
.studio-overview-metric strong { display: block; margin-top: 12px; font: 500 30px var(--studio-mono); }
.studio-overview-line { grid-column: 1 / -1; display: flex; justify-content: space-between; gap: 20px; padding: 14px 0; border-bottom: 1px solid var(--studio-line); }
.studio-overview-line code, .studio-overview-line time { color: #c7cbd2; font: 10px var(--studio-mono); text-align: right; word-break: break-all; }
.studio-overview-actions { grid-column: 1 / -1; display: flex; gap: 8px; padding-top: 18px; }
.studio-form { display: grid; gap: 17px; }
.studio-form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.studio-form label, .studio-dialog label { display: grid; gap: 7px; color: var(--studio-muted); font-size: 11px; }
.studio-form label > span { display: flex; justify-content: space-between; }
.studio-form input, .studio-form select, .studio-dialog input, .studio-dialog textarea { width: 100%; min-height: 40px; padding: 9px 10px; color: var(--studio-text); }
.studio-form textarea { width: 100%; min-height: 130px; resize: vertical; padding: 10px; line-height: 1.6; }
.studio-form .studio-field-wide { grid-column: 1 / -1; }
.studio-form-note { margin: -8px 0 0; color: var(--studio-dim); font-size: 11px; line-height: 1.5; }
.studio-rich-editor { border: 1px solid var(--studio-line); background: #0a0c10; }
.studio-rich-toolbar { display: flex; flex-wrap: wrap; gap: 4px; padding: 7px; border-bottom: 1px solid var(--studio-line); }
.studio-rich-toolbar button, .studio-rich-toolbar select, .studio-rich-toolbar input { width: auto; min-height: 30px; height: 30px; padding: 0 8px; }
.studio-rich-toolbar input[type="color"] { width: 34px; padding: 3px; }
.studio-rich-surface { min-height: 220px; padding: 16px; outline: none; color: var(--studio-text); font-size: 16px; line-height: 1.75; }
.studio-rich-surface:focus { box-shadow: inset 0 0 0 1px var(--studio-cyan); }
.studio-media-preview { position: relative; min-height: 160px; border: 1px solid var(--studio-line); background: #08090d; overflow: hidden; }
.studio-media-preview img { display: block; width: 100%; height: 220px; object-fit: cover; }
.studio-media-preview span { position: absolute; inset: auto 8px 8px; padding: 4px 6px; background: rgba(8, 9, 13, .82); color: var(--studio-muted); font: 9px var(--studio-mono); }
.studio-media-actions { display: flex; gap: 7px; margin-top: 8px; }
.studio-json-editor { min-height: 340px !important; font: 12px/1.6 var(--studio-mono); white-space: pre; }
.studio-media-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.studio-media-item { display: grid; min-width: 0; overflow: hidden; border: 1px solid var(--studio-line); background: #0a0c10; }
.studio-media-item > button { min-width: 0; border: 0; border-radius: 0; text-align: left; }
.studio-media-item > button:first-child { display: block; padding: 0; background: transparent; }
.studio-media-item > button:last-child { display: flex; align-items: center; justify-content: center; gap: 7px; min-height: 36px; border-top: 1px solid var(--studio-line); background: var(--studio-panel-2); color: var(--studio-muted); font-size: 10px; }
.studio-media-item img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; }
.studio-media-item span { display: block; padding: 7px; overflow: hidden; color: var(--studio-muted); font: 9px var(--studio-mono); text-overflow: ellipsis; white-space: nowrap; }
.studio-message-list, .studio-revision-list, .studio-validation-list { display: grid; gap: 1px; background: var(--studio-line); }
.studio-message, .studio-revision, .studio-validation-item { padding: 14px; background: var(--studio-panel-2); }
.studio-message header, .studio-revision header { display: flex; justify-content: space-between; gap: 12px; }
.studio-message p { margin: 9px 0; line-height: 1.55; white-space: pre-wrap; }
.studio-message small, .studio-revision small { color: var(--studio-dim); font: 9px var(--studio-mono); }
.studio-message-actions { display: flex; gap: 6px; }
.studio-message-reply { display: grid; grid-template-columns: 1fr auto; gap: 6px; margin-top: 10px; }
.studio-message-reply input { min-width: 0; }

.studio-preview-panel { display: grid; grid-template-rows: 52px minmax(0, 1fr); background: #06070a; }
.studio-preview-toolbar { display: flex; align-items: center; gap: 9px; min-width: 0; padding: 8px 12px; border-bottom: 1px solid var(--studio-line); background: var(--studio-panel); }
.studio-viewport-switch { display: flex; }
.studio-viewport-switch button { border-radius: 0; }
.studio-viewport-switch button + button { margin-left: -1px; }
.studio-viewport-switch button.is-active { position: relative; z-index: 1; border-color: var(--studio-cyan); color: var(--studio-cyan); }
.studio-preview-address { display: flex; align-items: center; min-width: 0; flex: 1; }
.studio-preview-address span, .studio-preview-zoom span { padding: 0 7px; color: var(--studio-dim); font: 9px var(--studio-mono); }
.studio-preview-address select { min-width: 0; width: 100%; height: 34px; padding: 0 8px; font: 10px var(--studio-mono); }
.studio-preview-zoom { display: flex; align-items: center; }
.studio-preview-zoom input { width: 76px; accent-color: var(--studio-accent); }
.studio-preview-zoom output { width: 34px; color: var(--studio-muted); font: 9px var(--studio-mono); }
.studio-preview-stage { display: grid; place-items: center; min-width: 0; min-height: 0; padding: 20px; overflow: auto; background-image: linear-gradient(#11141a 1px, transparent 1px), linear-gradient(90deg, #11141a 1px, transparent 1px); background-size: 24px 24px; }
.studio-preview-frame { width: 100%; height: 100%; min-width: 320px; transform-origin: center; background: #fff; box-shadow: 0 0 0 1px #333944, 0 18px 60px rgba(0, 0, 0, .42); transition: width .24s ease, height .24s ease; }
.studio-preview-stage[data-viewport="tablet"] .studio-preview-frame { width: min(768px, 100%); }
.studio-preview-stage[data-viewport="mobile"] .studio-preview-frame { width: min(390px, 100%); }
.studio-preview-frame iframe { display: block; width: 100%; height: 100%; border: 0; background: #fff; }

.studio-dialog { width: min(820px, calc(100vw - 32px)); max-height: min(820px, calc(100vh - 32px)); padding: 0; border: 1px solid var(--studio-line-strong); border-radius: 4px; background: var(--studio-panel); color: var(--studio-text); }
.studio-dialog::backdrop { background: rgba(2, 3, 5, .76); backdrop-filter: blur(5px); }
.studio-dialog > header { display: flex; align-items: center; justify-content: space-between; min-height: 70px; padding: 14px 18px; border-bottom: 1px solid var(--studio-line); }
.studio-dialog h2, .studio-dialog h3 { margin: 0; font-family: var(--studio-display); }
.studio-dialog-body { max-height: calc(100vh - 130px); padding: 20px; overflow: auto; }
.studio-dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 22px; }
.studio-ai-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
.studio-ai-grid section { min-width: 0; }
.studio-ai-grid section > p { color: var(--studio-muted); line-height: 1.6; }
.studio-ai-grid textarea { min-height: 220px; font: 11px/1.55 var(--studio-mono); }
.studio-patch-diff { grid-column: 1 / -1; padding-top: 20px; border-top: 1px solid var(--studio-line); }
.studio-diff-row { display: grid; grid-template-columns: minmax(140px, .6fr) 1fr 1fr; gap: 8px; padding: 9px 0; border-bottom: 1px solid var(--studio-line); font: 10px/1.45 var(--studio-mono); }
.studio-diff-row code { color: var(--studio-cyan); overflow-wrap: anywhere; }
.studio-diff-row del, .studio-diff-row ins { max-height: 100px; padding: 6px; overflow: auto; text-decoration: none; white-space: pre-wrap; }
.studio-diff-row del { background: rgba(255, 126, 120, .09); color: #f0a09c; }
.studio-diff-row ins { background: rgba(214, 255, 115, .08); color: #d6e9a1; }
.studio-validation-item[data-severity="error"] { box-shadow: inset 3px 0 var(--studio-danger); }
.studio-validation-item[data-severity="warning"] { box-shadow: inset 3px 0 var(--studio-amber); }
.studio-validation-item strong { display: block; margin-bottom: 5px; }
.studio-validation-item code { color: var(--studio-muted); font: 9px var(--studio-mono); }
.studio-revision { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 12px; }
.studio-revision p { margin: 0 0 5px; }
.studio-toast { position: fixed; z-index: 90; right: 20px; bottom: 20px; max-width: min(420px, calc(100vw - 40px)); margin: 0; padding: 11px 14px; border: 1px solid var(--studio-line-strong); background: #12151b; opacity: 0; pointer-events: none; transform: translateY(8px); transition: .2s ease; }
.studio-toast.is-visible { opacity: 1; transform: none; }

@media (max-width: 1180px) {
  .studio-workspace { grid-template-columns: 220px minmax(350px, 42vw) minmax(390px, 1fr); }
  .studio-top-actions button span { display: none; }
  .studio-preview-zoom { display: none; }
}

@media (max-width: 760px) {
  body { overflow: hidden; }
  .studio-app { min-height: 0; }
  .studio-topbar { grid-template-columns: minmax(0, 1fr) auto auto; height: 54px; }
  .studio-brand { padding: 0 12px; border-right: 0; }
  .studio-brand small, .studio-sync, .studio-top-actions > button:not(.studio-primary) { display: none; }
  .studio-history-controls { display: flex; gap: 3px; padding: 0; }
  .studio-history-controls .studio-icon-button { width: 34px; min-width: 34px; height: 34px; padding: 0; }
  .studio-top-actions { padding: 0 8px; border-left: 0; }
  .studio-top-actions .studio-primary { width: 38px; min-width: 38px; padding: 0; justify-content: center; }
  .studio-mobile-tabs { display: grid; grid-template-columns: repeat(3, 1fr); height: 42px; border-bottom: 1px solid var(--studio-line); }
  .studio-mobile-tabs button { border: 0; border-radius: 0; background: #0a0c10; color: var(--studio-muted); font-size: 12px; }
  .studio-mobile-tabs button.is-active { color: var(--studio-accent); box-shadow: inset 0 -2px var(--studio-accent); }
  .studio-workspace { display: block; height: calc(100vh - 96px); }
  .studio-tree-panel, .studio-editor-panel, .studio-preview-panel { display: none; width: 100%; height: 100%; border-right: 0; }
  .studio-workspace[data-mobile-active="tree"] .studio-tree-panel { display: block; }
  .studio-workspace[data-mobile-active="editor"] .studio-editor-panel { display: grid; }
  .studio-workspace[data-mobile-active="preview"] .studio-preview-panel { display: grid; }
  .studio-tree { height: calc(100% - 134px); }
  .studio-editor-scroll { padding: 16px; padding-bottom: calc(28px + env(safe-area-inset-bottom)); }
  .studio-editor-heading { min-height: 68px; padding: 12px 14px; }
  .studio-form-grid { grid-template-columns: 1fr; }
  .studio-form .studio-field-wide { grid-column: auto; }
  .studio-media-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .studio-preview-toolbar { gap: 6px; }
  .studio-preview-address span { display: none; }
  .studio-preview-stage { padding: 10px; }
  .studio-preview-frame { height: 100%; }
  .studio-dialog { width: calc(100vw - 16px); max-height: calc(100vh - 16px); }
  .studio-ai-grid { grid-template-columns: 1fr; }
  .studio-patch-diff { grid-column: auto; }
  .studio-diff-row { grid-template-columns: 1fr; }
  .studio-overview-actions { display: grid; }
}

.studio-component-capabilities {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
  padding: 10px 12px;
  border-left: 2px solid var(--studio-accent);
  color: var(--studio-muted);
  font: 500 12px/1.45 var(--studio-mono);
}

.studio-section-summary,
.studio-link-preview,
.studio-component-question,
.studio-impact,
.studio-relation-readout,
.studio-relation-warning {
  min-width: 0;
  border-top: 1px solid var(--studio-line);
  border-bottom: 1px solid var(--studio-line);
  padding: 14px 0;
}

.studio-section-summary > header,
.studio-link-preview > header,
.studio-diagnostics > header,
.studio-search-index > header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.studio-section-summary > header span,
.studio-link-preview > header span,
.studio-diagnostics > header span,
.studio-search-index > header span,
.studio-readonly-history > span,
.studio-component-question > span {
  display: block;
  color: var(--studio-cyan);
  font: 500 10px/1.4 var(--studio-mono);
}

.studio-section-summary > header strong,
.studio-link-preview > header strong {
  display: block;
  margin-top: 3px;
  overflow-wrap: anywhere;
  font: 600 14px/1.4 var(--studio-display);
}

.studio-section-summary > header button,
.studio-link-preview > header button,
.studio-diagnostics > header button,
.studio-search-index form button,
.studio-repeater > button,
.studio-repeater-actions button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
}

.studio-section-summary ol {
  display: grid;
  gap: 1px;
  margin: 14px 0 0;
  padding: 0;
  background: var(--studio-line);
  list-style: none;
}

.studio-section-summary li { min-width: 0; background: var(--studio-panel); }
.studio-section-summary li.studio-empty { margin: 0; padding: 22px 12px; }
.studio-section-summary li button {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  width: 100%;
  min-height: 52px;
  border: 0;
  border-radius: 0;
  background: var(--studio-panel-2);
  text-align: left;
}
.studio-section-summary li button:hover { background: #171a21; }
.studio-section-summary li button > span { grid-row: 1 / 3; align-self: center; color: var(--studio-dim); font: 500 10px var(--studio-mono); }
.studio-section-summary li button > strong { min-width: 0; overflow: hidden; font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.studio-section-summary li button > small { min-width: 0; overflow: hidden; color: var(--studio-dim); font: 9px var(--studio-mono); text-overflow: ellipsis; white-space: nowrap; }

.studio-repeater {
  min-width: 0;
  margin: 0;
  padding: 14px 0 0;
  border: 0;
  border-top: 1px solid var(--studio-line);
}
.studio-repeater legend { padding: 0 8px 0 0; color: var(--studio-muted); font: 500 10px var(--studio-mono); text-transform: uppercase; }
.studio-repeater-items { display: grid; gap: 1px; margin: 0 0 8px; background: var(--studio-line); }
.studio-repeater-item { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; padding: 12px; background: var(--studio-panel-2); }
.studio-repeater-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.studio-repeater-grid .studio-field-wide { grid-column: 1 / -1; }
.studio-repeater-actions { display: grid; align-content: start; gap: 4px; }
.studio-repeater-actions button { width: 32px; min-width: 32px; height: 32px; min-height: 32px; padding: 0; }
.studio-repeater > button { margin-left: auto; }

.studio-checklist {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  min-width: 0;
  margin: 0;
  padding: 14px 0 0;
  border: 0;
  border-top: 1px solid var(--studio-line);
  background: var(--studio-line);
}
.studio-checklist legend { padding: 0 8px 8px 0; color: var(--studio-muted); font: 500 10px var(--studio-mono); text-transform: uppercase; }
.studio-checklist label { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 3px 9px; min-width: 0; padding: 11px 12px; background: var(--studio-panel-2); cursor: pointer; }
.studio-checklist input { grid-row: 1 / 3; align-self: center; accent-color: var(--studio-accent); }
.studio-checklist span { min-width: 0; overflow: hidden; color: var(--studio-text); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.studio-checklist small { min-width: 0; overflow: hidden; color: var(--studio-dim); font: 9px var(--studio-mono); text-overflow: ellipsis; white-space: nowrap; }

.studio-advanced-editor { min-width: 0; margin-top: 8px; border-top: 1px solid var(--studio-line); }
.studio-advanced-editor > summary { display: flex; align-items: center; gap: 8px; min-height: 42px; color: var(--studio-dim); font: 500 10px var(--studio-mono); cursor: pointer; list-style: none; }
.studio-advanced-editor > summary::-webkit-details-marker { display: none; }
.studio-advanced-editor[open] > summary { color: var(--studio-cyan); }
.studio-advanced-editor > label { margin-top: 4px; }

.studio-registry { min-width: 0; }
.studio-registry-list { display: grid; gap: 1px; margin: 16px 0; background: var(--studio-line); }
.studio-registry-list button { display: grid; grid-template-columns: minmax(0, 1fr) 110px 150px; gap: 12px; min-width: 0; min-height: 46px; padding: 10px 12px; border: 0; border-radius: 0; background: var(--studio-panel-2); color: inherit; text-align: left; }
.studio-registry-list button:hover { background: #171a21; }
.studio-registry-list strong { min-width: 0; overflow: hidden; font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.studio-registry-list span,
.studio-registry-list small { color: var(--studio-dim); font: 500 9px/1.45 var(--studio-mono); }
.studio-registry-list span[data-status="stable"] { color: var(--studio-accent); }
.studio-registry-list span[data-status="experimental"] { color: var(--studio-amber); }

.studio-impact,
.studio-relation-readout {
  display: grid;
  gap: 5px;
  color: var(--studio-muted);
  line-height: 1.55;
}
.studio-impact strong,
.studio-relation-readout strong { color: var(--studio-text); font-size: 12px; }
.studio-impact span,
.studio-relation-readout span { font-size: 11px; }
.studio-relation-readout p { margin: 0; color: var(--studio-text); }

.studio-relation-builder { display: grid; gap: 14px; }
.studio-relation-builder > header { padding-bottom: 4px; }
.studio-relation-builder > header span { color: var(--studio-cyan); font: 500 10px var(--studio-mono); }
.studio-relation-builder > header h3 { margin: 5px 0 0; overflow-wrap: anywhere; font: 600 17px/1.35 var(--studio-display); }
.studio-relation-builder fieldset { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; min-width: 0; margin: 0; padding: 14px 0 4px; border: 0; border-top: 1px solid var(--studio-line); }
.studio-relation-builder fieldset legend { padding-right: 8px; color: var(--studio-accent); font: 500 10px var(--studio-mono); }
.studio-relation-builder fieldset label { display: grid; gap: 7px; color: var(--studio-muted); font-size: 11px; }
.studio-relation-builder fieldset label.studio-field-wide,
.studio-relation-builder fieldset > p { grid-column: 1 / -1; }
.studio-relation-builder fieldset input,
.studio-relation-builder fieldset select,
.studio-relation-builder fieldset textarea { width: 100%; min-height: 40px; padding: 9px 10px; }
.studio-relation-builder fieldset textarea { min-height: 110px; resize: vertical; }
.studio-relation-builder fieldset > p { margin: 0; color: var(--studio-dim); font-size: 11px; }
.studio-relation-warning { padding-left: 12px; border-left: 2px solid var(--studio-amber); }
.studio-relation-warning[data-severity="error"] { border-left-color: var(--studio-danger); }
.studio-relation-warning strong { font-size: 12px; }
.studio-relation-warning p { margin: 5px 0 0; color: var(--studio-muted); font-size: 11px; line-height: 1.5; }

.studio-link-preview { display: grid; grid-template-columns: 54px minmax(0, 1fr); gap: 12px; }
.studio-link-preview > header { grid-column: 1 / -1; }
.studio-link-preview > img { width: 54px; height: 54px; border: 1px solid var(--studio-line); object-fit: contain; background: #fff; }
.studio-link-preview > div:last-child { grid-column: 2; align-self: center; min-width: 0; }
.studio-link-preview:not(:has(> img)) > div:last-child { grid-column: 1 / -1; }
.studio-link-preview p { margin: 0 0 6px; color: var(--studio-muted); line-height: 1.55; }
.studio-link-preview small { display: block; overflow-wrap: anywhere; color: var(--studio-dim); font: 9px/1.45 var(--studio-mono); }

.studio-component-question { padding-left: 12px; border-left: 2px solid var(--studio-cyan); }
.studio-component-question > label { margin-top: 9px; }
.studio-readonly-history { min-width: 0; }
.studio-readonly-history h3 { margin: 5px 0 0; font: 600 18px var(--studio-display); }
.studio-readonly-history > p { color: var(--studio-muted); line-height: 1.65; }
.studio-readonly-history > pre { max-height: 420px; margin: 18px 0; padding: 14px; overflow: auto; border: 1px solid var(--studio-line); background: var(--studio-bg); color: #c9ced6; font: 10px/1.55 var(--studio-mono); white-space: pre-wrap; overflow-wrap: anywhere; }

.studio-diagnostics,
.studio-search-index { min-width: 0; }
.studio-diagnostics > header,
.studio-search-index > header { padding-bottom: 16px; border-bottom: 1px solid var(--studio-line); }
.studio-diagnostics > header h3,
.studio-search-index > header h3 { margin: 4px 0 0; font: 600 18px/1.35 var(--studio-display); }
.studio-search-index > header { display: block; }
.studio-search-index > header p { margin: 6px 0 0; color: var(--studio-dim); font: 10px/1.5 var(--studio-mono); }
.studio-diagnostic-summary { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); margin: 14px 0; border-top: 1px solid var(--studio-line); border-bottom: 1px solid var(--studio-line); }
.studio-diagnostic-summary > * { min-width: 0; padding: 11px 10px; border-right: 1px solid var(--studio-line); overflow-wrap: anywhere; font: 500 10px/1.4 var(--studio-mono); }
.studio-diagnostic-summary > *:last-child { border-right: 0; }
.studio-diagnostic-summary strong { color: var(--studio-danger); }
.studio-diagnostic-summary span { color: var(--studio-amber); }
.studio-diagnostic-summary span + span { color: var(--studio-muted); }
.studio-diagnostic-summary small { color: var(--studio-cyan); }
.studio-diagnostic-list button[data-severity="error"] { box-shadow: inset 2px 0 var(--studio-danger); }
.studio-diagnostic-list button[data-severity="warning"] { box-shadow: inset 2px 0 var(--studio-amber); }
.studio-diagnostic-list button[data-severity="info"] { box-shadow: inset 2px 0 var(--studio-cyan); }
.studio-diagnostic-list button span { min-width: 0; overflow-wrap: anywhere; color: #c9cdd4; font-size: 11px; line-height: 1.45; }
.studio-diagnostic-list button small { overflow-wrap: anywhere; text-align: right; }

.studio-search-index form { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; margin: 16px 0; }
.studio-search-index form label { display: grid; gap: 7px; color: var(--studio-muted); font-size: 11px; }
.studio-search-index form input { width: 100%; min-height: 40px; padding: 9px 10px; }
.studio-search-index form button { align-self: end; min-height: 40px; }
.studio-search-results { display: grid; gap: 1px; background: var(--studio-line); }
.studio-search-results > p { margin: 0; padding: 10px 12px; background: var(--studio-panel); color: var(--studio-dim); font: 10px var(--studio-mono); }
.studio-search-results > a { display: grid; grid-template-columns: 92px minmax(0, 1fr); gap: 4px 12px; min-width: 0; padding: 12px; background: var(--studio-panel-2); }
.studio-search-results > a:hover { background: #171a21; }
.studio-search-results > a span { grid-row: 1 / 3; color: var(--studio-cyan); font: 500 9px/1.4 var(--studio-mono); text-transform: uppercase; }
.studio-search-results > a strong,
.studio-search-results > a small { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.studio-search-results > a strong { font-size: 12px; }
.studio-search-results > a small { color: var(--studio-dim); font-size: 10px; }

.studio-media-actions label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--studio-muted);
  font-size: 12px;
}

.studio-media-actions select {
  min-width: 96px;
}

.studio-media-item small {
  display: block;
  overflow: hidden;
  margin-top: 4px;
  color: var(--studio-muted);
  font: 500 10px/1.35 var(--studio-mono);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.studio-overview-banner {
  grid-column: 1 / -1;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 0 22px;
  border-bottom: 1px solid var(--studio-line);
}

.studio-overview-banner span,
.studio-overview-banner strong {
  color: var(--studio-accent);
  font: 500 11px/1.4 var(--studio-mono);
}

.studio-overview-banner h2 {
  margin: 4px 0 0;
  font: 600 22px/1.25 var(--studio-display);
}

.studio-diagnostic-list {
  grid-column: 1 / -1;
  display: grid;
  gap: 1px;
  background: var(--studio-line);
}

.studio-diagnostic-list button {
  display: grid;
  grid-template-columns: minmax(130px, .28fr) 1fr auto;
  gap: 14px;
  border: 0;
  padding: 11px 12px;
  background: var(--studio-panel);
  color: inherit;
  text-align: left;
}

.studio-diagnostic-list b,
.studio-diagnostic-list small {
  color: var(--studio-muted);
  font: 500 10px/1.4 var(--studio-mono);
}

.studio-component-sandbox {
  grid-column: 1 / -1;
  margin-top: 8px;
  border-top: 1px solid var(--studio-line);
  padding-top: 18px;
}

.studio-component-sandbox > header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.studio-component-sandbox > header span {
  color: var(--studio-cyan);
  font: 500 10px/1.4 var(--studio-mono);
}

.studio-component-sandbox > header h3 {
  margin: 3px 0 0;
  font-size: 15px;
}

.studio-component-sandbox [data-component-preview] {
  min-width: 0;
  overflow: auto;
  padding: 14px;
  border: 1px solid var(--studio-line);
  background: var(--studio-bg);
}

@media (max-width: 760px) {
  .studio-overview-banner { align-items: start; }
  .studio-diagnostic-list button { grid-template-columns: 1fr; gap: 4px; }
  .studio-diagnostic-list button small { text-align: left; }
  .studio-diagnostic-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .studio-diagnostic-summary > *:nth-child(2) { border-right: 0; }
  .studio-diagnostic-summary > *:nth-child(-n + 2) { border-bottom: 1px solid var(--studio-line); }
  .studio-repeater-item { grid-template-columns: 1fr; }
  .studio-checklist { grid-template-columns: 1fr; }
  .studio-registry-list button { grid-template-columns: minmax(0, 1fr) auto; }
  .studio-registry-list button small { grid-column: 1 / -1; }
  .studio-repeater-grid,
  .studio-relation-builder fieldset { grid-template-columns: 1fr; }
  .studio-repeater-grid .studio-field-wide,
  .studio-relation-builder fieldset label.studio-field-wide,
  .studio-relation-builder fieldset > p { grid-column: auto; }
  .studio-repeater-actions { grid-template-columns: repeat(3, 32px); justify-content: end; }
  .studio-section-summary > header,
  .studio-link-preview > header,
  .studio-diagnostics > header { align-items: start; }
  .studio-search-results > a { grid-template-columns: 1fr; }
  .studio-search-results > a span { grid-row: auto; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}