/* =========================================================
   v1.29 — compact simple piece + CNT-4 planning depth
   ========================================================= */
.studio-simple-v129{display:none}.studio-simple-mode-v129 .studio-simple-v129{display:block;animation:motionRevealV120 var(--motion-small) var(--ease-enter)}.studio-simple-mode-v129 .studio-layout{display:none!important}.simple-piece-shell-v129{display:grid;gap:9px}.simple-piece-head-v129{display:flex;align-items:center;gap:9px;flex-wrap:wrap;padding:10px 12px;border:1px solid var(--stroke-subtle);border-radius:10px;background:var(--surface-primary)}.simple-piece-head-v129>div{min-width:0}.simple-piece-head-v129 b{font-size:13px}.simple-piece-head-v129 p{font-size:9.8px;color:var(--text-muted);margin:2px 0 0}.simple-piece-head-v129 .grow{flex:1}.simple-piece-tabs-v129{display:flex;gap:3px;overflow:auto}.simple-piece-tabs-v129 button{height:31px;border:1px solid var(--stroke-subtle);background:var(--surface-inset);color:var(--text-muted);border-radius:7px;padding:0 10px}.simple-piece-tabs-v129 button.active{background:var(--surface-selected);color:var(--text-primary);border-color:color-mix(in srgb,var(--accent) 35%,var(--stroke-default))}.simple-piece-pane-v129{display:none}.simple-piece-pane-v129.active{display:block}.simple-textarea-v129{width:100%;min-height:300px;resize:vertical;border:1px solid var(--stroke-subtle);border-radius:10px;background:var(--surface-input);color:var(--text-primary);padding:13px;line-height:1.55}.simple-output-v129{display:grid;grid-template-columns:1.2fr .8fr;gap:8px}.simple-preview-v129{min-height:220px;border:1px solid var(--stroke-subtle);border-radius:10px;background:var(--surface-inset);padding:18px}.simple-preview-v129 h2{font-size:18px;margin:0 0 10px}.simple-preview-v129 p{font-size:11px;line-height:1.55;color:var(--text-secondary)}
.plan-depth-summary-v129{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.plan-depth-stat-v129{padding:8px;border:1px solid var(--stroke-subtle);border-radius:8px;background:var(--surface-inset)}.plan-depth-stat-v129 span{display:block;font-size:9px;color:var(--text-muted)}.plan-depth-stat-v129 b{display:block;font-size:11px;margin-top:3px}.plan-diff-v129{display:grid;gap:5px}.plan-diff-row-v129{display:grid;grid-template-columns:26px minmax(0,1fr) auto;gap:7px;align-items:start;padding:7px;border:1px solid var(--stroke-subtle);border-radius:8px;background:var(--surface-inset)}.plan-diff-row-v129 i{font-style:normal;color:var(--accent)}.plan-diff-row-v129 b{font-size:10.5px}.plan-diff-row-v129 p{font-size:9.4px;color:var(--text-muted);line-height:1.4;margin:2px 0 0}.plan-diff-row-v129 small{font-size:9px;color:var(--text-muted)}
.plan-save-indicator-v129{display:inline-flex;align-items:center;gap:5px;font-size:9.5px;color:var(--text-muted);margin-left:6px}.plan-save-indicator-v129.saved{color:var(--good)}.plan-save-indicator-v129.dirty{color:var(--warn)}
@media(max-width:780px){.simple-output-v129,.plan-depth-summary-v129{grid-template-columns:1fr}.simple-piece-head-v129{align-items:flex-start}.simple-textarea-v129{min-height:240px}.plan-diff-row-v129{grid-template-columns:24px minmax(0,1fr)}.plan-diff-row-v129 small{grid-column:2}}