:root{
  --ink:#171616;--cream:#f6f2e9;--orange:#ff5c35;--lime:#d9fa58;--muted:#77736c;
  --panel:#1c1c1b;--panel2:#292926;--line:#3c3b38;
}
*{box-sizing:border-box}
body{margin:0;background:var(--cream);color:var(--ink);font-family:'Zen Kaku Gothic New',sans-serif}

/* ===== ヘッダー ===== */
header{height:74px;border-bottom:1px solid #c8c3b8;display:flex;align-items:center;padding:0 4.5vw;gap:22px;position:sticky;top:0;background:var(--cream);z-index:20}
.brand{font-family:'DM Mono';font-weight:bold;font-size:18px;text-decoration:none;color:inherit;letter-spacing:-1px;white-space:nowrap}
.brand i{width:10px;height:10px;background:var(--orange);display:inline-block;border-radius:50%;margin-right:8px}
.brand small{color:#888;font-size:8px;margin-left:10px}
#status{margin-left:auto;color:var(--muted);font-size:12px;text-align:right}
.export-area{display:flex;gap:8px;align-items:center}
.export-area select{background:white;border:1px solid #bdb8ac;padding:9px;font:12px 'Zen Kaku Gothic New'}
.guide-link{font:11px 'DM Mono';color:var(--muted);text-decoration:none;border:1px solid #c8c3b8;padding:9px 13px;white-space:nowrap}
.guide-link:hover{border-color:var(--ink);color:var(--ink)}
.back-link{font:11px 'DM Mono';color:var(--muted);text-decoration:none;white-space:nowrap}
.back-link:hover{color:var(--ink)}
.outline{border:1px solid var(--ink);background:transparent;padding:11px 16px;font:700 12px 'Zen Kaku Gothic New';cursor:pointer;white-space:nowrap}
.outline:not(:disabled):hover{background:var(--ink);color:#fff}
button:disabled{opacity:.38;cursor:not-allowed}
#exportProg{position:sticky;top:74px;z-index:20;width:100%;height:5px;display:block;border:0;background:#ddd8cc;accent-color:var(--orange)}
#exportProg[hidden]{display:none}

/* ===== ヒーロー ===== */
main{max-width:1200px;margin:auto;padding:52px 36px 40px}
.hero{display:grid;grid-template-columns:1.25fr .75fr;column-gap:90px;margin-bottom:42px}
.eyebrow{font:11px 'DM Mono';letter-spacing:1.5px;color:var(--orange);grid-column:1/-1;margin:0 0 16px}
h1{font-size:clamp(34px,4.6vw,62px);line-height:1.12;letter-spacing:-.08em;margin:0;font-weight:900}
h1 em{font-style:normal;background:var(--lime);padding:0 .1em}
.intro{font-size:14px;line-height:2;color:#555;align-self:end;margin:0}

/* ===== ワークスペース ===== */
.workspace{background:var(--panel);padding:20px;color:#fff}
.step-label{display:flex;align-items:baseline;gap:12px;padding:18px 2px 8px;color:#c4c1b8}
.step-label span{font:10px 'DM Mono';color:var(--lime)}
.step-label b{font-size:12px;color:#eee}
.step-label small{margin-left:auto;font-size:10px;color:#8d8a82}
.drop-zone{border:1px dashed #74736f;min-height:104px;display:flex;align-items:center;justify-content:center;gap:8px;flex-direction:column;position:relative}
.drop-zone.over{border-color:var(--lime);background:#272724}
.drop-zone input{position:absolute;inset:0;opacity:0;cursor:pointer}
.plus{font:28px/18px 'DM Mono';color:var(--lime)}
.drop-zone strong{font-size:13px}
.drop-zone span{font-size:10px;color:#aaa}

/* マスターバー */
.master-bar{display:flex;align-items:center;gap:22px;flex-wrap:wrap;border:1px solid var(--line);padding:12px 14px;margin-top:14px}
.master-item{display:flex;align-items:center;gap:8px}
.check{display:flex;align-items:center;gap:7px;font-size:11px;color:#ddd;cursor:pointer}
.check small{color:#8d8a82;font-size:10px}
.check input{accent-color:var(--lime)}
.mono-label{font:10px 'DM Mono';color:var(--lime);white-space:nowrap}
.bpm-set{flex:1;min-width:220px}
.bpm-set input{flex:1;accent-color:var(--lime)}
.bpm-set output{font:13px 'DM Mono';color:#fff;min-width:52px;text-align:right}
.magic{margin-left:auto;background:var(--lime);border:0;color:var(--ink);padding:11px 18px;font:700 12px 'Zen Kaku Gothic New';cursor:pointer}
.magic:not(:disabled):hover{background:#e9ff86}
.master-note{font-size:10px;color:#97948b;margin:8px 2px 0;line-height:1.8}

/* トランスポート */
.transport{height:58px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;margin-top:14px}
.play,.stop{border:0;background:none;color:#fff;font-size:16px;cursor:pointer}
.play{color:var(--lime);font-size:20px;width:32px}
.transport #timeReadout{font:12px 'DM Mono';color:#cac8c0;min-width:132px}
.transport input{accent-color:var(--lime);flex:1}
.local{font:10px 'DM Mono';color:var(--lime)}

/* タイムライン */
.timeline{position:relative;height:64px;background:#242421;margin-top:12px;overflow:hidden;cursor:pointer}
.timeline.empty{display:flex;align-items:center;justify-content:center;cursor:default}
.timeline.empty p{color:#898781;font-size:11px;margin:0}
.tl-clip{position:absolute;height:26px;border-radius:2px;font:9px 'DM Mono';color:#111;padding:2px 6px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tl-clip.lane0{top:5px;background:var(--lime)}
.tl-clip.lane1{top:33px;background:var(--orange);color:#fff}
.tl-overlap{position:absolute;top:0;bottom:0;background:rgba(255,255,255,.14);border-left:1px solid rgba(255,255,255,.35);border-right:1px solid rgba(255,255,255,.35)}
.tl-playhead{position:absolute;top:0;bottom:0;width:2px;background:#fff;pointer-events:none}

/* トラックカード */
.tracks{margin-top:6px}
.tracks.empty{color:#898781;font-size:12px;text-align:center;padding:14px}
.track{background:var(--panel2);padding:10px 14px;margin-bottom:10px}
.track-head{display:flex;align-items:center;gap:10px}
.track-number{font:11px 'DM Mono';color:var(--lime)}
.track-name{font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;min-width:0}
.bpm-badge{font:10px 'DM Mono';color:var(--ink);background:var(--lime);padding:3px 7px;border-radius:2px;white-space:nowrap}
.bpm-badge.unknown{background:#4c4a45;color:#bbb}
.rate-read{font:10px 'DM Mono';color:#ffb39e;white-space:nowrap}
.solo-in,.solo-out{background:none;border:1px solid #55534e;color:#ccc;height:26px;padding:0 9px;cursor:pointer;font-size:10px;white-space:nowrap}
.solo-in:hover,.solo-out:hover{border-color:var(--lime);color:var(--lime)}
.solo-in.soloing,.solo-out.soloing{background:var(--lime);border-color:var(--lime);color:#111}
.in-num,.out-num{width:66px;background:#1c1c1b;border:1px solid #4c4a45;color:#fff;font:11px 'DM Mono';padding:4px 5px;text-align:center}
.in-num:focus,.out-num:focus{border-color:var(--lime);outline:none}
.move-up,.move-down{background:none;border:1px solid #55534e;color:#ccc;width:26px;height:26px;cursor:pointer;font-size:12px}
.move-up:hover,.move-down:hover{border-color:var(--lime);color:var(--lime)}
.remove{background:none;border:0;color:#aaa;font-size:22px;cursor:pointer;line-height:1}
.remove:hover{color:var(--orange)}
.waveform{display:block;width:100%;height:88px;margin:6px 0 3px;background:#242421}
.track-controls{display:flex;gap:16px;border-top:1px solid #403f3b;padding-top:8px;flex-wrap:wrap}
.track-controls label{font:9px 'DM Mono';color:#a9a79e;display:flex;align-items:center;gap:6px;flex:1;min-width:150px}
.track-controls label.check{flex:0;min-width:auto;font-size:10px;font-family:'Zen Kaku Gothic New'}
.track-controls output{color:#fff;white-space:nowrap}
.track-controls input[type=range]{accent-color:var(--orange);min-width:0;flex:1}

/* ===== つなぎ目パネル ===== */
.transition-panel{margin-top:25px;border:1px solid #c8c3b8;padding:25px}
.panel-title{display:flex;align-items:baseline;gap:14px;border-bottom:1px solid #d5d0c5;padding-bottom:18px}
.panel-title span{font:11px 'DM Mono';color:var(--orange)}
h2{font:700 18px 'DM Mono';letter-spacing:-1px;margin:0}
.panel-title p{margin:0 0 0 auto;color:#777;font-size:12px}
.join-chips{display:flex;gap:8px;flex-wrap:wrap;padding:16px 0 6px}
.chips-empty{color:#999;font-size:12px;margin:0}
.join-chips button{border:1px solid #bdb8ac;background:transparent;padding:9px 13px;font:11px 'DM Mono';cursor:pointer;max-width:280px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.join-chips button.active{background:var(--ink);color:var(--lime);border-color:var(--ink)}
.join-editor{margin-top:14px}
.je-row{display:grid;grid-template-columns:1fr 1fr;gap:26px;margin-bottom:22px}
.je-block{min-width:0}
.je-head{font:10px 'DM Mono';color:#56534d;border-bottom:1px solid #d5d0c5;padding-bottom:7px;margin-bottom:12px}
.beat-presets{display:flex;gap:7px;margin-bottom:12px}
.beat-presets button{flex:1;border:1px solid #bdb8ac;background:transparent;padding:9px 0;font:700 12px 'Zen Kaku Gothic New';cursor:pointer}
.beat-presets button.active{background:var(--orange);border-color:var(--orange);color:#fff}
.slider-line{display:flex;align-items:center;gap:10px;font-size:11px;color:#56534d;margin:10px 0}
.slider-line input{flex:1;accent-color:var(--orange)}
.slider-line output{font:11px 'DM Mono';color:var(--orange);min-width:56px;text-align:right}
.snap-check{font-size:11px;color:#444;margin-top:14px}
.snap-check input{accent-color:var(--orange)}
.snap-check small{font-size:10px;color:#888}
.curve-cards,.fill-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:7px}
.curve-cards button,.fill-cards button{min-height:72px;text-align:left;padding:9px;border:1px solid #bdb8ac;background:transparent;cursor:pointer}
.curve-cards button b,.fill-cards button b{font-size:11px;display:block;margin-bottom:6px;font-weight:700}
.curve-cards button span,.fill-cards button span{font-size:9.5px;line-height:1.5;color:#666;display:block}
.curve-cards button.active,.fill-cards button.active{background:var(--ink);border-color:var(--ink);color:var(--lime)}
.curve-cards button.active span,.fill-cards button.active span{color:#ddd}
#curveCanvas{width:100%;height:110px;background:#f0ece1;border:1px solid #d5d0c5;margin-top:10px;display:block}
.preview-block{display:flex;flex-direction:column}
.join-hint{font-size:11px;color:#666;line-height:1.9;flex:1}
.preview{background:var(--orange);color:#fff;border:0;padding:13px 14px;font:700 12px 'Zen Kaku Gothic New';cursor:pointer}
.preview:hover{background:#ff7050}

/* ===== TIPS ===== */
.tips{display:flex;gap:25px;padding:25px 4px;color:#706d66;font-size:11px;flex-wrap:wrap}
.tips>b{font:10px 'DM Mono';color:var(--ink)}
.tips span:before{content:'→ ';color:var(--orange)}

@media(max-width:760px){
  header{padding:0 14px;gap:10px}
  .brand small,#status{display:none}
  main{padding:30px 14px}
  .hero{display:block}
  .intro{margin-top:20px}
  .je-row{grid-template-columns:1fr}
  .curve-cards,.fill-cards{grid-template-columns:1fr 1fr}
  .tips{display:block;line-height:2}
  .tips span{display:block}
  .master-bar{gap:12px}
  .magic{margin-left:0;width:100%}
}