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toast-in{0%{opacity:0;transform:translate(-50%,10px)}to{opacity:1;transform:translate(-50%)}}@keyframes toast-out{0%{opacity:1}to{opacity:0}}.explore-card{text-align:center;max-width:620px;margin:20px auto 0;padding:48px 44px}.explore-card h2{margin:14px 0 12px;font-size:26px;font-weight:700}.explore-card p{color:var(--text-soft);margin-bottom:26px;font-size:16px;line-height:1.65}.explore-card .btn{margin:0 auto}.explore-count{color:var(--text-faint);margin-top:18px;font-size:13px}.upload-filenames{color:var(--text-soft);text-align:center;margin-top:8px;font-size:13px}.practice-session-card{text-align:center;padding:20px}.practice-session-icon{background:var(--accent-soft);width:52px;height:52px;color:var(--accent-dark);border-radius:14px;place-items:center;margin:0 auto 14px;display:grid}.practice-session-card h3{font-size:15px;font-weight:700}.practice-session-card .meta{color:var(--text-soft);margin-top:4px;font-size:13px}.session-artist{color:var(--text-soft);margin-top:2px;font-size:18px;font-weight:600}.tool-grid{grid-template-columns:repeat(3,1fr);gap:20px;display:grid}@media (width<=900px){.tool-grid{grid-template-columns:repeat(2,1fr)}}@media (width<=600px){.tool-grid{grid-template-columns:1fr}}.tool-tile{text-align:center}.add-tool-btn{border:1.5px dashed var(--line);color:var(--text-faint);border-radius:10px;align-items:center;gap:6px;padding:7px 14px;font-size:14px;font-weight:600;transition:border-color .15s,color .15s;display:inline-flex}.add-tool-btn:hover{border-color:var(--accent);color:var(--accent-dark)}.tool-tile-label{color:var(--accent-dark);text-transform:uppercase;letter-spacing:.04em;justify-content:center;align-items:center;gap:8px;margin-bottom:18px;font-size:12px;font-weight:700;display:flex}.tool-tile textarea{border:1.5px solid var(--line);background:var(--bg);text-align:left;border-radius:11px;outline:none;width:100%;padding:10px 14px}.tool-tile textarea:focus{border-color:var(--accent);background:#fff}.tool-tile .file-row:first-child{padding-top:0}.metronome-pulse{background:var(--line);border-radius:50%;width:20px;height:20px;margin:0 auto 14px;transition:background 50ms,transform 50ms}.metronome-pulse.on{background:var(--accent);transform:scale(1.3)}.metronome-bpm{margin-bottom:10px;font-size:34px;font-weight:700}.metronome-bpm span{color:var(--text-faint);font-size:14px;font-weight:600}.tuner-note{color:var(--text-faint);min-height:54px;font-size:44px;font-weight:700}.tuner-note.in-tune{color:#1e9484}.tuner-note.off{color:#c14343}.tuner-cents{color:var(--text-soft);margin-top:4px;font-size:14px}.sticky-wall{grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:20px;margin:28px 0;display:grid}.sticky-note{border:1px solid var(--line);background:#fff;border-radius:10px;padding:18px 20px;position:relative}.sticky-note p{white-space:pre-wrap;padding-right:18px;font-size:14px;line-height:1.5}.sticky-note p a{color:var(--accent-dark);word-break:break-word;text-decoration:underline}.sticky-note .icon-btn{opacity:0;width:26px;height:26px;transition:opacity .15s;position:absolute;top:8px;right:8px}.sticky-note:hover .icon-btn{opacity:1}.sheet-file-tabs{flex-wrap:wrap;gap:8px;margin-bottom:14px;display:flex}.sheet-file-tabs button{background:var(--surface);border:1px solid var(--line);color:var(--text-soft);border-radius:999px;padding:7px 14px;font-size:13px;font-weight:600}.sheet-file-tabs button.active{background:var(--accent-soft);color:var(--accent-dark);border-color:#0000}.sheet-viewer{background:var(--surface);border-radius:var(--radius);box-shadow:var(--shadow);height:75vh;display:flex;overflow:hidden}.sheet-viewer iframe{border:none;width:100%;height:100%}.sheet-viewer img{object-fit:contain;width:100%;height:100%}.sheet-viewer-foot{color:var(--text-soft);justify-content:space-between;align-items:center;padding:10px 4px;font-size:13px;display:flex}