/* Piano-only presentation; no changes to note/finger colours or musical data. */
.layout>.main,.layout>.sidebar{min-width:0}
.memory-sidebar{padding:16px;gap:10px;height:auto;max-height:none}
.memory-sidebar p{margin:0;font-size:14px;line-height:1.6;color:var(--muted)}
.catalog-backup{margin:9px 0;color:var(--muted);font-size:12px;line-height:1.5}
.catalog-backup summary{cursor:pointer;padding:5px 0;touch-action:manipulation}
.catalog-backup p{margin:5px 0}
.catalog-backup button{border:1px solid var(--line);border-radius:7px;padding:6px 9px;background:var(--panel2);color:var(--text)}
.catalog-backup label{display:block;margin-top:7px}
.catalog-backup input{display:block;max-width:100%;margin-top:4px;font-size:11px}
.catalog-backup :is(summary,button,input):focus-visible{outline:3px solid #78d6d1;outline-offset:2px}
.practice-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:10px 18px;padding:4px 0;color:var(--muted);font-size:13px}
.practice-toolbar label,.learning-view-choice{display:inline-flex;align-items:center;gap:8px}
.practice-toolbar select{max-width:100%;border:1px solid var(--line);border-radius:7px;padding:7px 9px;background:#111f30;color:#f4f7fb}
.practice-summary{font-size:12px;font-variant-numeric:tabular-nums}
.practice-eligibility{margin:0;color:var(--muted);font-size:12px;line-height:1.6}
.piano-learning-card{min-width:0;border:1px solid #30455b;border-left:3px solid #78d6d1;border-radius:9px;background:#111f30;color:#f4f7fb}
.learning-preview-button{display:block;width:100%;min-width:0;padding:14px 16px;text-align:left;color:inherit;background:transparent;border:0;border-radius:7px;touch-action:manipulation;-webkit-tap-highlight-color:#78d6d126}
.learning-preview-button:hover,.learning-collapse-button:hover{background:#192d40}
.learning-preview-text{display:-webkit-box;-webkit-box-orient:vertical;-webkit-line-clamp:5;line-clamp:5;max-height:8em;overflow:hidden;overflow-wrap:anywhere;white-space:pre-line;line-height:1.6;font-size:14px;max-width:76ch}
.learning-disclosure-label{display:flex;align-items:center;gap:8px;margin-top:9px;color:#78d6d1;font-size:12px;font-weight:600}
.learning-collapse-button{display:flex;align-items:center;gap:12px;width:100%;padding:12px 16px;text-align:left;color:#78d6d1;background:transparent;border:0;border-bottom:1px solid #30455b;border-radius:7px 7px 0 0;font-size:13px;touch-action:manipulation}
.learning-material-body{padding:4px 16px 14px;font-size:14px;line-height:1.6;overflow-wrap:anywhere}
.learning-material-body p,.learning-material-body li{max-width:76ch}
.learning-material-body a{color:#a1e4e0;text-underline-offset:3px}
.learning-material-body .lesson-guide{border:0;border-radius:0;padding:12px 0;background:transparent}
.learning-material-body .lesson-guide h3{font-size:16px;line-height:1.35}
.learning-material-body .guide-item{background:transparent}
.learning-preparations{padding:10px 0;border-bottom:1px solid #30455b}
.learning-preparations p{margin:0 0 7px;color:var(--muted);font-size:12px}
.learning-preparations>div{display:flex;flex-wrap:wrap;gap:7px}
.learning-preparations button{min-height:44px;max-width:100%;border:1px solid #30455b;border-radius:7px;padding:7px 10px;background:transparent;color:#a1e4e0;text-align:left;overflow-wrap:anywhere;touch-action:manipulation}
.learning-preparations button:hover{background:#192d40;border-color:#78d6d1}
.learning-preparations button:focus-visible,.lesson-name:focus-visible{outline:3px solid #78d6d1;outline-offset:3px}
.learning-preview-button:focus-visible,.learning-collapse-button:focus-visible,.practice-toolbar select:focus-visible{outline:3px solid #78d6d1;outline-offset:3px}
.piano-learning-card:focus-within{border-color:#78d6d1}
@media(max-width:600px){.practice-toolbar{align-items:flex-start}.practice-toolbar>label{max-width:100%;flex-wrap:wrap}.practice-summary{width:100%}.learning-preview-button,.learning-material-body{padding-left:12px;padding-right:12px}.learning-material-body .lesson-guide-grid{grid-template-columns:1fr}}
@media(prefers-reduced-motion:reduce){.learning-preview-button,.learning-collapse-button{transition:none}}
@media(max-width:1120px){.layout{grid-template-columns:minmax(0,1fr)}}
@media(max-width:600px){.topbar{flex-direction:column}.status-row{justify-content:flex-start;max-width:100%}.pill{white-space:normal;overflow-wrap:anywhere}.hero,.hero>div,.actions,.box,.controls,.keyboard-head{min-width:0;max-width:100%}.actions{flex-wrap:wrap}.keyboard-head{flex-direction:column;align-items:flex-start}.box{grid-template-columns:minmax(0,1fr)}.controls{flex-wrap:wrap}.keyboard-head .mini{overflow-wrap:anywhere}}
.blind-practice-notice{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin:8px 0}
.blind-practice-notice p{flex:1 1 22rem;min-width:0;margin:0;color:var(--muted);font-size:13px;line-height:1.5}
.blind-practice-notice button{max-width:100%;min-height:44px;border:1px solid var(--line);border-radius:11px;padding:9px 12px;background:rgba(102,217,255,.12);color:var(--text);font:inherit;font-size:13px;font-weight:750;white-space:normal;cursor:pointer;touch-action:manipulation}
.blind-practice-notice button:hover{border-color:#78d6d1;background:rgba(102,217,255,.2)}
.blind-practice-notice button:focus-visible{outline:3px solid #78d6d1;outline-offset:3px}
.preparation-log{margin:12px 0;padding:10px 0;border-top:1px solid var(--line);font-size:13px;line-height:1.5;overflow-wrap:anywhere}
.preparation-log summary{cursor:pointer;color:#a1e4e0;touch-action:manipulation}
.preparation-log p{max-width:78ch;color:var(--muted)}
.preparation-log .preparation-save-error{color:#ffcf9c;border-left:3px solid #e5a66b;padding-left:10px}
.preparation-actions{display:flex;flex-wrap:wrap;gap:8px}
.preparation-actions button{min-height:44px;max-width:100%;padding:8px 12px;border:1px solid var(--line);border-radius:8px;background:transparent;color:var(--text);font:inherit;white-space:normal;touch-action:manipulation}
.preparation-actions button:disabled{opacity:.55;cursor:default}
.preparation-log textarea{display:block;box-sizing:border-box;width:100%;max-width:100%;margin-top:6px;padding:10px;border:1px solid var(--line);border-radius:8px;background:var(--bg);color:var(--text);font:12px/1.5 monospace;resize:vertical;white-space:pre-wrap;overflow-wrap:anywhere}
.preparation-log summary:focus-visible,.preparation-actions button:focus-visible,.preparation-log textarea:focus-visible{outline:3px solid #78d6d1;outline-offset:3px}
.preparation-scope{margin:.6rem 0;min-width:0}
.preparation-scope label{display:flex;align-items:center;flex-wrap:wrap;gap:.5rem;min-width:0}
.preparation-scope select{flex:1 1 18rem;min-width:0;max-width:100%;min-height:44px}
.preparation-scope p{margin:.4rem 0;font-size:.875rem;line-height:1.5;overflow-wrap:anywhere}
.preparation-scope select:focus-visible{outline:2px solid #67dbea;outline-offset:3px}
@media(max-width:1120px){
  .layout>.sidebar.panel{height:auto;max-height:none}
  .sidebar>.lessons{flex:0 1 auto;min-height:160px;max-height:360px}
}