/* Online viewer (shared by the reader landings). Colours come from the site's own style.css variables. */
.ov-hero{padding:40px 0 56px}
.ov-drop{position:relative;border:2px dashed color-mix(in srgb,var(--acc) 45%,var(--stroke));border-radius:26px;background:var(--card);box-shadow:var(--shadow);padding:52px 24px;text-align:center;transition:border-color .15s,background .15s}
.ov-drop h1{font-size:clamp(32px,5vw,52px);margin:0 0 14px}
.ov-drop p.lead{color:var(--muted);font-size:17px;max-width:640px;margin:0 auto 26px}
.ov-drop .cta{justify-content:center;margin-top:0}
.ov-drop .btn{cursor:pointer;font-family:inherit}
.ov-formats{margin-top:20px;color:var(--muted);font-size:13px;letter-spacing:.02em}
.ov-private{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-size:13px;color:var(--muted)}
body.ov-dragging .ov-drop{border-color:var(--acc);background:var(--chip)}
.ov-dropmask{position:fixed;inset:0;z-index:60;display:none;align-items:center;justify-content:center;background:color-mix(in srgb,var(--acc) 22%,transparent);backdrop-filter:blur(2px);font-size:22px;font-weight:600;color:var(--text);pointer-events:none}
body.ov-dragging .ov-dropmask{display:flex}
.ov-dropmask span{background:var(--card);border:2px dashed var(--acc);border-radius:18px;padding:22px 34px}

/* ---------- full-screen viewer ---------- */
.ov{position:fixed;inset:0;z-index:50;display:flex;flex-direction:column;background:var(--bg2);color:var(--text)}
.ov[hidden]{display:none}
body.ov-open{overflow:hidden}
.ov-bar{flex:none;display:flex;align-items:center;gap:8px;flex-wrap:wrap;min-height:54px;padding:8px 12px;background:var(--card);border-bottom:1px solid var(--stroke)}
.ov-name{display:flex;align-items:center;gap:8px;font-weight:600;font-size:14px;min-width:0;flex:1 1 160px}
.ov-name img{width:26px;height:26px;border-radius:7px;flex:none}
.ov-name span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.ov-tools{display:flex;align-items:center;gap:6px;flex-wrap:wrap}
.ov-b{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:34px;padding:5px 12px;border-radius:9px;border:1px solid var(--stroke);background:var(--card);color:var(--text);font-family:inherit;font-weight:600;font-size:13px;line-height:1.2;cursor:pointer;text-decoration:none;white-space:nowrap}
.ov-b:hover{border-color:var(--acc)}
.ov-b.on,.ov-b.p{background:var(--acc);border-color:var(--acc);color:var(--bg)}
.ov-b:disabled{opacity:.45;cursor:default}
.ov-b svg{width:16px;height:16px;flex:none}
.ov-sel{min-height:34px;border:1px solid var(--stroke);background:var(--card);color:var(--text);border-radius:9px;padding:4px 8px;font-family:inherit;font-size:13px;max-width:190px}
.ov-in{min-height:34px;border:1px solid var(--stroke);background:var(--bg);color:var(--text);border-radius:9px;padding:4px 10px;font-family:inherit;font-size:14px;width:170px}
.ov-lbl{font-size:12px;color:var(--muted)}
.ov-sep{width:1px;height:24px;background:var(--stroke);margin:0 2px}
.ov-body{flex:1;min-height:0;position:relative;display:flex}
.ov-msg{margin:auto;max-width:520px;text-align:center;color:var(--muted);padding:30px}
.ov-toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);z-index:70;background:var(--text);color:var(--bg);padding:10px 18px;border-radius:12px;font-size:14px;max-width:min(92vw,560px);box-shadow:var(--shadow)}
.ov-spin{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none}
.ov-spin span{background:var(--card);border:1px solid var(--stroke);padding:10px 18px;border-radius:12px;font-size:14px;box-shadow:var(--shadow)}
.ov-hint{font-size:12px;color:var(--muted);padding:6px 12px;text-align:center;border-top:1px solid var(--stroke);background:var(--card)}

/* ---------- PDF pages (voice) ---------- */
.ov-pages{flex:1 1 55%;overflow:auto;padding:16px;display:flex;flex-direction:column;align-items:center;gap:14px}
.ov-page{position:relative;background:#fff;box-shadow:0 2px 12px rgba(0,0,0,.18);max-width:100%}
.ov-page canvas{display:block;width:100%;height:100%}
.ov-page .no{position:absolute;bottom:-20px;left:0;right:0;text-align:center;font-size:11px;color:var(--muted)}
.ov-read{flex:1 1 45%;overflow:auto;padding:22px 26px 80px;background:var(--card);border-inline-start:1px solid var(--stroke);font-family:Newsreader,Georgia,serif;font-size:19px;line-height:1.75}
.ov-read .pg{font:600 12px/1 -apple-system,Segoe UI,sans-serif;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin:22px 0 8px}
.ov-read .pg:first-child{margin-top:0}
.ov-read p{margin:0 0 12px}
.ov-read .s{cursor:pointer;border-radius:4px;transition:background .15s}
.ov-read .s:hover{background:color-mix(in srgb,var(--acc) 10%,transparent)}
.ov-read .s.cur{background:color-mix(in srgb,var(--acc) 26%,transparent);box-decoration-break:clone;-webkit-box-decoration-break:clone}
.ov-read .tip{font:13px -apple-system,Segoe UI,sans-serif;color:var(--muted);margin-bottom:16px}
.ov-player{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.ov-b.play{min-width:92px}
@media(max-width:820px){.ov-body.voice{flex-direction:column}.ov-body.voice .ov-pages{flex:0 0 34%;}.ov-body.voice .ov-read{border-inline-start:0;border-top:1px solid var(--stroke);font-size:17px;padding:16px 16px 60px}}

/* ---------- sheet music stage ---------- */
.ov.sheet{background:#2A2A2E}
.ov.sheet .ov-hint{background:#1F1F23;color:#A8A8B3;border-color:#33333A}
.ov-stage{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;gap:6px;padding:8px;user-select:none;-webkit-user-select:none;touch-action:pan-y pinch-zoom;outline:none}
.ov-stage canvas,.ov-stage img{display:block;background:#fff;box-shadow:0 4px 18px rgba(0,0,0,.4);max-height:100%;max-width:100%}
.ov-stage.two canvas,.ov-stage.two img{max-width:calc(50% - 3px)}
.ov-count{font-family:inherit;font-weight:600;font-size:13px;min-width:92px;text-align:center}
.ov-flash{position:absolute;top:50%;width:64px;height:64px;margin-top:-32px;border-radius:50%;background:rgba(0,0,0,.35);color:#fff;display:flex;align-items:center;justify-content:center;opacity:0;transition:opacity .25s;pointer-events:none}
.ov-flash.l{left:16px}.ov-flash.r{right:16px}.ov-flash.show{opacity:1}

/* ---------- markdown editor ---------- */
.ov-md{flex:1;display:flex;min-height:0}
.ov-md textarea{flex:1 1 50%;border:0;border-inline-end:1px solid var(--stroke);resize:none;padding:20px;font:14px/1.6 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:var(--bg);color:var(--text);outline:none;tab-size:4}
.ov-md .ov-prev{flex:1 1 50%;overflow:auto;background:var(--bg2);padding:24px}
.ov-paper{background:#fff;color:#1d2330;max-width:794px;margin:0 auto;padding:56px 64px;box-shadow:0 2px 14px rgba(0,0,0,.14);min-height:100%}
.ov-tabs{display:none}
@media(max-width:820px){.ov-tabs{display:inline-flex;gap:4px}.ov-md textarea,.ov-md .ov-prev{flex-basis:100%}.ov-md.show-prev textarea{display:none}.ov-md:not(.show-prev) .ov-prev{display:none}.ov-paper{padding:28px 22px}}

/* Typeset Markdown: the preview, the PDF and the HTML export use these rules. */
.md{font:15.5px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:#1d2330;overflow-wrap:anywhere}
.md>:first-child{margin-top:0}
.md h1,.md h2,.md h3,.md h4{line-height:1.25;margin:1.4em 0 .5em;font-weight:650;break-after:avoid;page-break-after:avoid}
.md h1{font-size:2em;padding-bottom:.25em;border-bottom:1px solid #e3e6ea}.md h2{font-size:1.5em;padding-bottom:.2em;border-bottom:1px solid #eceef1}.md h3{font-size:1.22em}
.md p,.md ul,.md ol,.md blockquote,.md pre,.md table{margin:0 0 1em}
.md a{color:#0b62c4}
.md code{font:.88em ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#f2f4f7;padding:.12em .38em;border-radius:5px}
.md pre{background:#f6f8fa;border:1px solid #e6e9ee;border-radius:8px;padding:14px 16px;white-space:pre-wrap;break-inside:avoid}
.md pre code{background:none;padding:0;font-size:.86em}
.md blockquote{border-inline-start:4px solid #d4d9e0;margin-inline:0;padding:.2em 1em;color:#4a5363}
.md table{border-collapse:collapse;width:100%;font-size:.94em;break-inside:avoid;display:table}
.md th,.md td{border:1px solid #dfe3e8;padding:6px 10px}.md th{background:#f4f6f8;font-weight:600}
.md tr:nth-child(2n) td{background:#fafbfc}
.md img{max-width:100%}
.md hr{border:0;border-top:1px solid #e3e6ea;margin:1.6em 0}
.md li>input[type=checkbox]{margin-inline-end:.45em}
.md ul:has(>li>input[type=checkbox]){list-style:none;padding-inline-start:1.1em}

/* ---------- text viewer ---------- */
.ov-txt{flex:1;overflow:auto;background:var(--card);font:13.5px/1.55 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;--lh:21px}
.ov-txt .ck{content-visibility:auto}
.ov-txt .l{display:flex;min-height:var(--lh);line-height:var(--lh)}
.ov-txt .n{flex:none;width:var(--gw,4ch);padding:0 10px 0 6px;text-align:end;color:var(--muted);opacity:.7;user-select:none;-webkit-user-select:none;position:sticky;left:0;background:var(--card);border-inline-end:1px solid var(--stroke)}
.ov-txt .c{white-space:pre;padding:0 14px}
.ov-txt.wrap .c{white-space:pre-wrap;overflow-wrap:anywhere;min-width:0}
.ov-txt:not(.wrap) .ck{width:max-content;min-width:100%}
.ov-txt mark{background:#FFE58A;color:#111;border-radius:2px}
.ov-txt .l.hit mark.cur{background:#FF9F43}
.ov-txt .l.hit{background:color-mix(in srgb,var(--acc) 9%,transparent)}
.ov-txt .lvl-e{color:#D93025}.ov-txt .lvl-w{color:#B26A00}
@media(prefers-color-scheme:dark){.ov-txt .lvl-e{color:#FF8A80}.ov-txt .lvl-w{color:#FFCC80}}
.ov-table{flex:1;overflow:auto;background:var(--card)}
.ov-table table{border-collapse:collapse;font-size:13px}
.ov-table th,.ov-table td{border:1px solid var(--stroke);padding:5px 10px;white-space:nowrap;max-width:420px;overflow:hidden;text-overflow:ellipsis;text-align:start}
.ov-table th{position:sticky;top:0;background:var(--bg2);z-index:1}
.ov-table td.rn,.ov-table th.rn{color:var(--muted);text-align:end;position:sticky;left:0;background:var(--bg2)}
.ov-table .more{padding:12px;color:var(--muted);font-size:13px}
.ov-mdview{flex:1;overflow:auto;background:var(--bg2);padding:24px}
@media(max-width:640px){.ov-in{width:120px}.ov-sel{max-width:130px}.ov-bar{gap:6px}.ov-name{flex-basis:100%}}
@media print{body.ov-open>*:not(.ov){display:none}}