:root{
  --primary:#007bff;
  --primary-hover:#0056b3;
  --bg:#f0f0f0;
  --card:#ffffff;
  --text:#333333;
  --border:#dddddd;
  --blue:#1565c0;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:system-ui,-apple-system,"Segoe UI",Roboto,"Hiragino Kaku Gothic ProN","Noto Sans JP","Yu Gothic",sans-serif;
  background:var(--bg);
  color:var(--text);
  padding:20px;
  text-align:center;
}
.app-shell{
  max-width:880px;
  margin:0 auto;
  background:var(--card);
  padding:20px;
  border-radius:12px;
  box-shadow:0 4px 16px rgba(0,0,0,.08);
}
.hero{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:12px;
  margin:0 0 14px;
  padding:0 0 12px;
  border-bottom:1px solid var(--border);
  background:transparent;
}
.hero h1{margin:0 0 6px;font-size:1.65rem;color:#111827;text-align:left}.hero p{margin:0;color:#666;font-size:.92rem;text-align:left}.help-btn{margin:0;padding:8px 12px;font-size:.9rem;border:1px solid var(--border);border-radius:999px;background:var(--primary);color:#fff;font-weight:700;cursor:pointer;white-space:nowrap}.help-btn:hover{background:var(--primary-hover)}
.panel{background:#fff;border:1px solid var(--border);border-radius:12px;padding:14px;margin:14px auto 0;box-shadow:none}.panel h2{font-size:1rem;margin:0 0 10px;color:#333;text-align:left}.controls-panel{display:grid;gap:12px}.control-strip{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;width:100%;padding:4px 0}.transport-btn{width:58px;height:58px;border-radius:12px;border:0;background:#d1d5db;color:#111;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;margin:0 4px;box-shadow:inset 0 -1px 0 rgba(0,0,0,.08)}.transport-btn:hover:not(:disabled){background:#c8ccd2}.transport-btn:active:not(:disabled){transform:translateY(1px)}.transport-btn:disabled{opacity:.42;cursor:not-allowed}.icon-record{width:26px;height:26px;border-radius:999px;background:#ff0000;display:block}.icon-play{width:0;height:0;border-top:18px solid transparent;border-bottom:18px solid transparent;border-left:28px solid #008000;display:block;margin-left:5px}.icon-stop{width:24px;height:24px;background:#1f1d18;display:block}.icon-pause{width:28px;height:32px;display:block;position:relative}.icon-pause::before,.icon-pause::after{content:"";position:absolute;top:0;width:10px;height:32px;background:#1f1d18}.icon-pause::before{left:0}.icon-pause::after{right:0}.icon-to-start,.icon-to-end{width:34px;height:34px;display:block;position:relative}.icon-to-start::before,.icon-to-end::before{content:"";position:absolute;top:3px;width:4px;height:28px;background:#1f1d18;border-radius:1px}.icon-to-start::before{left:4px}.icon-to-end::before{right:4px}.icon-to-start::after{content:"";position:absolute;left:10px;top:4px;border-top:13px solid transparent;border-bottom:13px solid transparent;border-right:22px solid #002b12}.icon-to-end::after{content:"";position:absolute;right:10px;top:4px;border-top:13px solid transparent;border-bottom:13px solid transparent;border-left:22px solid #002b12}.icon-play-selection{width:0;height:0;border-top:16px solid transparent;border-bottom:16px solid transparent;border-left:24px solid #008000;display:block;margin-left:4px}.play-selection{position:relative}.play-selection::after{content:"選択";position:absolute;bottom:3px;left:0;right:0;font-size:10px;color:#334155;font-weight:700}.meter-wrap{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;max-width:520px;margin:6px auto 0;padding-top:10px;border-top:1px solid var(--border)}.meter-label{min-width:64px;color:#444;font-weight:700}.level-meter{display:flex;align-items:flex-end;justify-content:center;gap:3px;height:26px}.level-meter span{display:block;width:9px;height:22px;border-radius:2px;background:#d8d8d8}.level-meter span.on{background:#22c55e}.level-meter span.hot{background:#facc15}.level-meter.recording span.on{animation:pulse .8s infinite alternate}@keyframes pulse{from{opacity:.62}to{opacity:1}}.time-box{width:100%;font-variant-numeric:tabular-nums;font-weight:700;font-size:1.08rem;color:#111827;white-space:nowrap}.utility-row,.view-controls{display:flex;gap:10px;flex-wrap:wrap;justify-content:center;align-items:center;width:100%}button,.file-label{padding:10px 18px;font-size:.95rem;cursor:pointer;background:var(--primary);color:#fff;border:none;border-radius:999px;transition:background-color .2s,transform .03s;margin:0 2px;font-weight:700}button:hover:not(:disabled),.file-label:hover{background:var(--primary-hover)}button:active:not(:disabled){transform:translateY(1px)}button:disabled{opacity:.5;cursor:not-allowed}.file-label input{display:none}select{border:1px solid var(--border);border-radius:999px;padding:9px 12px;background:#fff;min-width:110px}.waveform-panel{padding:0;overflow:hidden}.wave-header{height:40px;display:flex;align-items:center;justify-content:space-between;padding:0 14px;border-bottom:1px solid var(--border);color:#333;font-weight:700}#waveCanvas{display:block;width:100%;height:330px;background:#fff;cursor:crosshair}.waveform-panel::after{content:"マウスホイールで表示範囲を拡大・縮小できます";display:block;color:#777;font-size:.78rem;padding:0 0 8px}.view-panel h2{font-size:1rem;margin:0 0 10px;color:#333}.view-info{width:100%;color:#555;font-variant-numeric:tabular-nums;font-weight:700}.context-menu{position:fixed;display:none;min-width:210px;padding:6px;border:1px solid var(--border);border-radius:10px;background:#fff;box-shadow:0 12px 28px rgba(0,0,0,.18);z-index:1000}.context-menu button{display:flex;justify-content:space-between;gap:14px;width:100%;padding:8px 10px;border:0;border-radius:8px;background:transparent;color:#222;text-align:left;font-size:.9rem;cursor:pointer}.context-menu button:hover:not(:disabled){background:#eff6ff}.context-menu button:disabled{color:#999;cursor:default}.context-menu .danger{color:#dc2626}.modal[hidden]{display:none}.modal{position:fixed;inset:0;z-index:1200;text-align:left}.modal-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.22)}.modal-card{position:absolute;top:58px;right:22px;width:min(430px,calc(100vw - 28px));max-height:calc(100vh - 100px);overflow:auto;background:#fff;border:1px solid var(--border);border-radius:12px;box-shadow:0 18px 44px rgba(0,0,0,.25)}.modal-head{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--border)}.modal-head h2{font-size:1.05rem;margin:0}.modal-close{border:0;background:transparent;color:#333;font-size:1.5rem;padding:0 4px}.modal-body{padding:14px 16px;font-size:.92rem;line-height:1.7}.modal-body h3{margin:12px 0 4px;color:var(--blue);font-size:.95rem}.modal-body p{margin:0 0 8px}.app-footer{max-width:880px;margin:12px auto 0;text-align:center;padding:10px 0 20px;font-size:.95rem;color:var(--blue)}.app-footer p{margin:0}.app-footer a{color:var(--blue);text-decoration:none;font-weight:bold}.app-footer a:hover{color:#0d47a1}.ad-panel{max-width:880px;margin:12px auto 0;padding:0;border:1px solid #d7e6f8;border-radius:10px;background:#fff;overflow:hidden}.ad-panel[hidden]{display:none!important;margin:0!important;padding:0!important;border:0!important;height:0!important;overflow:hidden!important}.ad-panel-head{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:5px 8px;background:#f4f8ff;border-bottom:1px solid #d7e6f8}.ad-label{font-size:.72rem;color:#4f6f91;line-height:1}.ad-close-btn{margin:0!important;padding:3px 8px!important;min-height:0;height:auto;line-height:1.2;border:none;border-radius:999px;background:#1565c0;color:#fff;font-size:.72rem!important;font-weight:700;cursor:pointer}.ad-close-btn:hover{background:#0d47a1}.ad-body{padding:8px;background:#fff}.segments-panel,.internal-controls{display:none!important}@media(max-width:720px){body{padding:12px}.app-shell{padding:14px}.hero{display:block;text-align:center}.hero h1,.hero p{text-align:center}.help-btn{margin-top:10px}.transport-btn{width:52px;height:52px}.meter-wrap{max-width:100%}#waveCanvas{height:260px}}

.offtimer-row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;justify-content:center;width:100%;padding:10px 0 0;border-top:1px solid var(--border)}.offtimer-row label{font-weight:700;color:#333}.offtimer-info{min-width:132px;color:#555;font-variant-numeric:tabular-nums;font-weight:700}.ad-wait-message{font-size:.72rem;color:#4f6f91;line-height:1}.ad-wait-message[hidden],.ad-close-btn[hidden]{display:none!important}

.ad-close-btn:not([hidden]){display:inline-flex!important;align-items:center;justify-content:center;pointer-events:auto;}