/* Plain Music by Evermark v1.11: low-pressure, instrument-first pathway */
.piece-main{max-width:1160px;margin:0 auto;padding-bottom:42px}
.piece-nav{display:flex;align-items:center;justify-content:flex-end;gap:15px;flex-wrap:wrap}
.piece-nav a{font-size:12px;color:#e1d6ff;font-weight:780}
.piece-intro{display:grid;grid-template-columns:minmax(0,1.8fr) minmax(190px,.8fr);align-items:center;gap:30px;margin:29px 0 21px}
.piece-intro h1{font-size:clamp(33px,4.3vw,51px);margin:9px 0 14px;line-height:1.13}
.piece-intro p{font-size:13px;line-height:1.7}
.piece-intro-status{border:1px solid #637fa4;background:#182e4b;border-radius:15px;padding:19px 16px}
.piece-intro-status strong{display:block;font-size:21px;margin:10px 0}
.piece-intro-status p{font-size:11px;color:#c2d5ec;margin:0}
.piece-panel{border:1px solid #4c688e;background:#172a45;border-radius:17px;padding:21px;min-width:0}
.piece-overview h2{font-size:21px;margin:0 0 9px}
.piece-overview p{font-size:12px;margin:0 0 17px;color:#c9d9ec}
.piece-stage-buttons{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.piece-stage-buttons button{display:grid;gap:6px;text-align:left;align-items:start;background:#233c5b;color:#e5eaff;border:1px solid #6781a5;border-radius:12px;padding:13px 14px;cursor:pointer;min-height:78px}
.piece-stage-buttons button[aria-pressed=true]{background:#483b76;border-color:#d3b4ff;box-shadow:inset 0 0 0 1px #ae94e9}
.piece-stage-buttons .piece-stage-index{font-size:10px;text-transform:uppercase;letter-spacing:.04em;color:#d7ccef;font-weight:800}
.piece-stage-buttons .piece-stage-title{font-size:12px;font-weight:830}
.piece-stage-buttons .piece-stage-status{font-size:10px;color:#e2eaf6}
.piece-experience{display:grid;grid-template-columns:minmax(215px,.7fr) minmax(0,1.6fr);align-items:start;gap:15px;margin:16px 0}
.piece-companion{min-width:0;background:#172b48;border:1px solid #5a7499;border-radius:17px;padding:24px 20px;text-align:center}
.piece-avatar{display:flex;align-items:center;justify-content:end;flex-direction:column;width:136px;height:168px;margin:0 auto 20px}
.piece-avatar-head{width:98px;height:104px;background:#c88c68;border-radius:47% 47% 43% 43%;border:7px solid #42486c;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:3px;color:#fff;font-size:14px}
.piece-avatar-smile{font-size:36px;line-height:21px}
.piece-avatar-body{background:#5086bc;border-radius:40px 40px 3px 3px;width:110px;height:62px}
.piece-companion h2{font-size:24px;margin:10px 0}
.piece-instructor-disclosure{font-size:10px;line-height:1.5;color:#b5c6df}
.piece-instructor-message{border-radius:12px;background:#243c5d;border:1px solid #5c7698;padding:13px;font-size:13px;line-height:1.7;color:#f4efff}
.piece-voice{display:flex;align-items:center;gap:8px;justify-content:center;margin:14px 0;font-size:11px;font-weight:700}
.piece-voice input{width:16px;height:16px;accent-color:#bbacf2}
.piece-teacher-tip{text-align:left;background:#1d344f;border-left:3px solid #92b4dd;padding:12px;border-radius:8px;margin-top:24px}
.piece-teacher-tip strong{font-size:12px}
.piece-teacher-tip p{font-size:11px;line-height:1.7;color:#cad8ed}
.piece-instrument h2{font-size:clamp(21px,3vw,28px);margin:10px 0}
.piece-phrase-top{display:flex;justify-content:space-between;gap:15px;align-items:center;flex-wrap:wrap}
.piece-no-score{font-size:10px;color:#d5d1ec;border:1px solid #7f87b3;padding:6px 10px;border-radius:20px}
.piece-phrase-why{font-size:13px;line-height:1.7;margin:8px 0 13px;color:#d8e6f4}
.piece-notes-help{font-size:11px;line-height:1.6;color:#bbcde1}
.piece-note-strip{display:flex;flex-wrap:wrap;gap:7px;margin:15px 0}
.piece-note{position:relative;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:5px;padding:10px 12px;border-radius:10px;background:#203b5b;border:1px solid #6380a5;min-width:51px}
.piece-note strong{font-size:16px;color:#e1e9fa}
.piece-note small{font-size:9px;color:#c9d9ec}
.piece-note.current{background:#d8c8fc;border-color:#e3ceff}
.piece-note.current :is(strong,small){color:#271b49}
.piece-note.previous{background:#315464;border-color:#7bb09a}
.piece-note.previous strong{color:#effcf3}
.piece-controls,.piece-play-actions,.piece-midi-actions{display:flex;gap:9px;align-items:center;flex-wrap:wrap;margin:13px 0}
.piece-main button{font:inherit;font-weight:780;font-size:12px;border-radius:10px;padding:11px 14px;min-height:42px;border:1px solid #bdb7e8;background:#ddd5ff;color:#212445;cursor:pointer}
.piece-controls>button:nth-child(even),.piece-play-actions>button:nth-child(even),.piece-midi-actions>button:nth-child(even){background:#2d4669;color:#edf1ff;border-color:#8095b7}
.piece-main button:hover:not(:disabled){filter:brightness(1.08)}
.piece-main button:disabled{opacity:.53;cursor:not-allowed}
.piece-main :is(button,a,select,input,summary):focus-visible{outline:3px solid #f1c585;outline-offset:3px}
.piece-explanation{font-size:12px;line-height:1.7;color:#ebdcfd;min-height:1px}
.piece-explanation:empty{display:none}
.piece-keyboard-heading{margin-top:21px}
.piece-keyboard-heading h3{font-size:21px;margin:8px 0 10px}
.piece-keyboard{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:2px;position:relative;isolation:isolate;margin:15px 0}
.piece-keyboard .piece-white{min-height:174px;border-radius:0 0 9px 9px;border:1px solid #8f9cb5;background:linear-gradient(#fdfdff,#dce6f3);color:#1e2b42;display:flex;align-items:end;justify-content:center;padding:0 2px 16px;position:relative;z-index:1;font-size:clamp(10px,1.2vw,14px);font-weight:850}
.piece-keyboard .piece-white.target:not(.sounding){box-shadow:inset 0 -11px 0 #c38aeb;border-bottom-color:#9d67cc}
.piece-keyboard .piece-white.sounding{background:linear-gradient(#e8d1ff,#ba9bf6);box-shadow:inset 0 -8px 0 #9e6cdc}
.piece-black-row{position:absolute;inset:0 0 auto;height:58%;pointer-events:none;z-index:2}
.piece-black{position:absolute;top:0;width:6%;height:100%;background:linear-gradient(#101927,#2b3a57);border:1px solid #697e99;box-shadow:0 4px 5px #0005;border-radius:0 0 5px 5px}
.piece-expected{font-weight:800;font-size:15px;color:#e9d8fc;background:#213d5d;border:1px solid #536f98;border-radius:12px;padding:12px;line-height:1.6;min-height:47px}
.piece-feedback{font-size:12px;line-height:1.65;min-height:19px;color:#e9d8fa}
.piece-midi{margin-top:21px;border-top:1px solid #47607e;padding-top:15px}
.piece-midi details{background:#1b324f;border:1px solid #526e91;border-radius:12px;padding:13px}
.piece-midi summary{cursor:pointer;font-size:12px;font-weight:800}
.piece-midi p{font-size:11px;line-height:1.65;color:#c4d7e8}
.piece-midi label{display:block;font-size:11px;margin-top:12px;font-weight:780}
.piece-midi select{display:block;width:100%;margin:8px 0;border-radius:9px;min-height:40px;padding:8px 10px;background:#293f5d;color:#fff;border:1px solid #8499bd}
.piece-reflection h2{font-size:22px;margin:0 0 12px}
.piece-reflection p{font-size:12px;line-height:1.7}
.piece-reflection-footer{display:flex;gap:17px;align-items:center;justify-content:space-between;border-top:1px solid #4c6585;margin:18px 0;padding-top:15px}
.piece-reflection-footer p{flex:1;min-width:0}
.piece-boundary{color:#b8cade}
.piece-backlinks{display:flex;flex-wrap:wrap;gap:17px;padding:23px 2px}
.piece-backlinks a{color:#e0d1ff;font-size:12px;font-weight:800}
@media(max-width:850px){.piece-experience{grid-template-columns:1fr}.piece-companion{display:grid;grid-template-columns:120px 1fr;column-gap:18px;text-align:left;align-items:center}.piece-companion .piece-avatar{grid-row:span 5;width:110px}.piece-teacher-tip{grid-column:1/-1}.piece-voice{justify-content:flex-start}.piece-intro{grid-template-columns:1fr}.piece-intro-status{max-width:480px}}
@media(max-width:550px){.piece-main{padding-left:4px;padding-right:4px}.piece-intro{margin:20px 0}.piece-stage-buttons{grid-template-columns:1fr}.piece-stage-buttons button{min-height:59px}.piece-panel{padding:17px 13px}.piece-companion{display:flex;align-items:center;text-align:center;flex-direction:column;padding:18px}.piece-avatar{height:138px;margin:0 auto 8px;transform:scale(.8);transform-origin:bottom center}.piece-teacher-tip{text-align:left}.piece-keyboard .piece-white{min-height:124px;padding:0 1px 12px;font-size:10px}.piece-controls button,.piece-play-actions button{flex:1 1 auto}.piece-reflection-footer{flex-direction:column;align-items:stretch}.piece-phrase-top{align-items:flex-start}.piece-note{min-width:42px;padding:8px}}
@media(max-width:340px){.piece-intro h1{font-size:30px}.piece-controls,.piece-play-actions{gap:6px}.piece-keyboard .piece-white{min-height:115px}.piece-note{min-width:39px;padding:7px}}
@media(prefers-reduced-motion:reduce){.piece-main *{transition:none!important;animation:none!important}}

.piece-stage-buttons button:not([aria-pressed=true]){background:#233c5b;color:#eff3ff;border-color:#708cb0}.piece-stage-buttons button[aria-pressed=true]{background:#46386d;color:#fff;border-color:#d3b4ff}

/* v1.12 optional music expression lab. Collapsed by default, no new landing-page complexity. */
.piece-expression-lab{margin:20px 0 12px;background:#1c324e;border:1px solid #6c85a7;border-radius:13px;padding:13px 15px}
.piece-expression-lab>summary{cursor:pointer;color:#e9d9ff;font-weight:830;font-size:13px;line-height:1.5}
.piece-expression-body{padding:16px 0 4px}
.piece-expression-body h3{font-size:21px;margin:9px 0}
.piece-expression-body p{font-size:12px;line-height:1.68;color:#d6e1f3}
.piece-expression-options{border:0;padding:0;margin:19px 0 14px;min-width:0}
.piece-expression-options legend{font-weight:850;color:#eff2ff;font-size:12px;margin-bottom:12px}
.piece-expression-styles{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.piece-expression-styles button{border:1px solid #7c95bb!important;background:#284466!important;color:#f5f3ff!important;display:grid;gap:6px;text-align:left;align-content:center;padding:12px 9px;min-height:70px}
.piece-expression-styles button.selected,.piece-expression-styles button[aria-pressed=true]{background:#493c73!important;border-color:#ddc2fa!important;box-shadow:inset 0 0 0 1px #d9c0ff}
.piece-expression-styles button strong{font-weight:850;font-size:11px}
.piece-expression-styles button span{font-size:9px;font-weight:600;color:#dbe5f4;line-height:1.55}
.piece-expression-body label[for=piece-expression-ending]{display:block;font-size:12px;font-weight:850;color:#e7eeff}
#piece-expression-ending{display:block;width:100%;margin:8px 0 12px;background:#284466;color:#fff;border:1px solid #829ec6;border-radius:10px;min-height:43px;padding:10px;font:inherit;font-size:12px}
.piece-expression-description{background:#1b2c49;padding:12px;border-radius:10px;border-left:3px solid #b7a0e8}
.piece-expression-notes{display:flex;flex-wrap:wrap;gap:6px;margin:12px 0}
.piece-expression-note-chip{border:1px solid #829bbd;background:#25415e;display:grid;text-align:center;align-content:center;gap:3px;padding:7px 8px;border-radius:8px;min-width:40px}
.piece-expression-note-chip strong{font-size:12px;color:#f2f4ff}
.piece-expression-note-chip small{font-size:9px;color:#d2e2f6}
.piece-expression-note-chip.active{background:#e0ccff;border-color:#f2dfff}
.piece-expression-note-chip.active :is(strong,small){color:#281c45}
.piece-expression-play-row{display:flex;gap:14px;align-items:center;flex-wrap:wrap;margin:13px 0}
.piece-expression-play-row strong{color:#f7e6ff;font-size:21px;min-width:42px}
.piece-expression-status{background:#203957;border:1px solid #607d9e;border-radius:10px;padding:12px;min-height:44px}
.piece-expression-body .piece-expression-note{font-size:11px;color:#d2d9e8}
.piece-expression-create a{color:#e9d6ff;text-decoration:underline;font-weight:830}
@media(max-width:590px){.piece-expression-styles{grid-template-columns:1fr}.piece-expression-styles button{min-height:52px}.piece-expression-body h3{font-size:19px}}
@media(prefers-reduced-motion:reduce){.piece-expression-lab *{animation:none!important;transition:none!important}}

/* v1.13: the instrument and stop control stay together while an example plays. */
.piece-listening-deck{background:#172a45;border-radius:12px;scroll-margin-top:12px;min-width:0}
.piece-listening-deck.is-demonstrating{position:sticky;top:12px;z-index:5;box-shadow:0 0 0 10px #172a45,0 15px 28px #07111f90}
.piece-listening-deck .piece-keyboard-heading{margin-top:18px}
.piece-listening-controls{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.piece-listening-controls>span{font-size:11px;line-height:1.5;color:#cad8ed;flex:1 1 155px}
.piece-main button[aria-disabled=true]{opacity:.6;cursor:default}
.piece-main button[aria-disabled=true]:hover{filter:none}
.piece-main #piece-stop,.piece-main #piece-expression-stop{background:#294b71;color:#f7f4ff;border-color:#a4b9d4}
.piece-main #piece-stop[aria-disabled=false],.piece-main #piece-expression-stop[aria-disabled=false]{background:#f0dcba;color:#272b40;border-color:#ffe9c5}
.piece-playback-status{font-size:11px;line-height:1.6;color:#dbe6f5;margin:9px 0 14px;min-height:36px}
@media(max-width:550px){.piece-listening-deck .piece-keyboard-heading h3{font-size:18px}.piece-listening-deck .piece-expected{font-size:12px;padding:9px;min-height:42px}.piece-listening-controls{gap:8px}.piece-listening-controls>span{font-size:10px;flex-basis:120px}.piece-playback-status{font-size:10px;line-height:1.5}.piece-listening-deck.is-demonstrating{top:10px}}
@media(max-height:520px){.piece-listening-deck.is-demonstrating .piece-keyboard-heading{display:none}.piece-listening-deck.is-demonstrating .piece-keyboard .piece-white{min-height:85px}.piece-listening-deck.is-demonstrating .piece-playback-status{margin:6px 0}.piece-listening-deck.is-demonstrating .piece-expected{font-size:11px;line-height:1.4;padding:7px}}