/* Shared layout for the 54 solfege exercises. */
.exercise-main { padding-block:24px 48px; }
.breadcrumbs { display:flex; flex-wrap:wrap; gap:10px; color:var(--muted); font-size:12px; margin-bottom:26px; }
.exercise-heading { display:flex; align-items:center; justify-content:space-between; gap:24px; margin-bottom:24px; }
.exercise-heading .eyebrow { margin-bottom:10px; }
.exercise-heading h1 { font-size:clamp(36px,4vw,50px); margin-bottom:12px; }
.exercise-heading p:not(.eyebrow) { margin:0; color:var(--muted); font-size:14px; }
.exercise-count { font:400 15px "Segoe UI",Arial,sans-serif; letter-spacing:0; color:var(--muted); margin-left:14px; white-space:nowrap; }
.exercise-nav { display:flex; align-items:center; gap:14px; flex-shrink:0; font-size:13px; }
.exercise-nav a { padding:10px 13px; border:1px solid var(--line); border-radius:5px; text-decoration:none; background:var(--white); }
.exercise-nav a:hover { border-color:var(--accent); color:var(--accent); }
.exercise-nav [aria-disabled] { color:var(--muted); font-size:12px; }
.exercise-position { font-size:11px; color:var(--muted); }
.exercise-picker { background:var(--white); border:1px solid var(--line); border-radius:7px; margin-bottom:26px; }
.exercise-picker summary { padding:14px 18px; cursor:pointer; font-size:13px; font-weight:600; }
.exercise-picker summary span { color:var(--muted); font-size:11px; font-weight:400; margin-left:12px; }
.exercise-grid { display:grid; grid-template-columns:repeat(9,minmax(0,1fr)); padding:4px 18px 18px; gap:8px; }
.exercise-grid a { text-decoration:none; border:1px solid var(--line); border-radius:4px; text-align:center; padding:9px; font-size:13px; }
.exercise-grid a[aria-current="page"] { color:var(--white); background:var(--ink); border-color:var(--ink); font-weight:700; }
.exercise-grid a:hover { border-color:var(--accent); }
.practice-layout { display:grid; grid-template-columns:minmax(0,1fr) 320px; align-items:start; gap:24px; }
.score-panel,.audio-panel { border:1px solid var(--line); border-radius:9px; background:var(--white); min-width:0; overflow:hidden; }
.panel-heading { display:flex; justify-content:space-between; align-items:center; gap:14px; flex-wrap:wrap; padding:20px 24px; border-bottom:1px solid var(--line); }
.panel-heading h2 { font-size:24px; margin:0; }
.panel-heading button,#stop-audio { appearance:none; background:transparent; border:1px solid var(--line); border-radius:5px; padding:9px 12px; font:600 12px "Segoe UI",Arial,sans-serif; color:var(--ink); cursor:pointer; }
.panel-heading button:hover,#stop-audio:hover { border-color:var(--accent); color:var(--accent); }
.score-scroll { overflow:auto; padding:24px 16px; background:white; }
.score-scroll img { display:block; width:100%; height:auto; }
.score-scroll.is-expanded img { width:1200px; max-width:none; }
.score-caption { font-size:12px; color:var(--muted); margin:0; padding:16px 24px; border-top:1px solid var(--line); }
.audio-panel { padding:24px; }
.audio-panel .eyebrow { margin-bottom:10px; }
.audio-panel h2 { font-size:27px; margin-bottom:10px; }
.panel-intro { color:var(--muted); font-size:12px; margin-bottom:20px; }
.audio-modes { display:grid; gap:8px; }
.audio-mode { appearance:none; display:block; text-align:left; width:100%; padding:12px 14px; font:inherit; border:1px solid var(--line); border-radius:6px; background:var(--paper); color:var(--ink); cursor:pointer; }
.audio-mode strong { display:block; font-size:13px; }
.audio-mode span { display:block; font-size:11px; color:var(--muted); margin-top:3px; }
.audio-mode:hover { border-color:var(--accent); }
.audio-mode[aria-pressed="true"] { background:var(--ink); color:var(--white); border-color:var(--ink); }
.audio-mode[aria-pressed="true"] span { color:#d7e0e4; }
.player { border-top:1px solid var(--line); margin-top:20px; padding-top:16px; }
.player p { font-size:12px; min-height:2em; color:var(--muted); margin-bottom:10px; }
.player audio { display:block; width:100%; margin-bottom:12px; }
.practice-tip { margin-top:24px; padding:20px 24px; border-left:3px solid var(--accent); background:var(--sand); border-radius:0 6px 6px 0; }
.practice-tip strong { font-size:13px; }
.practice-tip p { font-size:13px; color:var(--muted); margin:6px 0 0; }
.next-study { border-top:1px solid var(--line); margin-top:40px; padding-top:30px; }
.next-study h2 { font-size:28px; }
.next-study p:not(.eyebrow) { font-size:14px; color:var(--muted); }
summary:focus-visible,.score-scroll:focus-visible,audio:focus-visible { outline:3px solid var(--accent); outline-offset:4px; }
[hidden] { display:none!important; }
@media(max-width:1050px){ .practice-layout { grid-template-columns:minmax(0,1fr) 280px; gap:18px; }.audio-panel { padding:20px; }.exercise-heading { align-items:flex-start; flex-direction:column; } }
@media(max-width:760px){ .practice-layout { grid-template-columns:minmax(0,1fr); }.audio-modes { grid-template-columns:repeat(2,minmax(0,1fr)); }.audio-mode:last-child { grid-column:1 / -1; }.exercise-grid { grid-template-columns:repeat(6,minmax(0,1fr)); }.exercise-main { padding-top:20px; }.score-scroll { padding:20px 10px; }.panel-heading { padding:18px; }.score-caption { padding:16px 18px; } }
@media(max-width:480px){ .exercise-nav { width:100%; justify-content:space-between; gap:8px; }.exercise-nav a { padding:10px; }.exercise-picker summary span { display:block; margin-left:16px; }.exercise-grid { padding-inline:12px; gap:6px; }.exercise-grid a { padding:9px 5px; }.audio-panel { padding:20px 16px; }.audio-modes { grid-template-columns:minmax(0,1fr); }.audio-mode:last-child { grid-column:auto; }.audio-mode { padding:13px 14px; } }