:root{
  --bg:#f5f4f0; --surface:#fbfbf9; --panel:#ffffff; --panel-soft:#f7f6f2;
  --ink:#1c1c1a; --ink-hover:#3a3935; --ink-2:#55534d; --sub:#7a776f; --muted:#8a877f;
  --line:#e3e1db; --line-2:#dcdad3; --line-3:#efeee9; --hover:#efeee9; --soft:#f3f2ee; --track:#ebe9e3;
  --accent:#6a4cff; /* 바이올렛 */
  --accent-hover:#5637e8;
  --accent-soft:#efebff;
  --font:"IBM Plex Sans KR",sans-serif; --mono:"JetBrains Mono",monospace;
}
*{box-sizing:border-box}
[hidden]{display:none !important}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);-webkit-font-smoothing:antialiased}
button,input,select{font:inherit;color:inherit}
.mono-label{font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--muted)}
.app{min-height:100vh;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:16px 28px;border-bottom:1px solid var(--line);background:var(--surface);flex-wrap:wrap}
.brand{display:flex;align-items:baseline;gap:6px 14px;min-width:0;flex-wrap:wrap}
.brand-title{font-size:17px;font-weight:700;letter-spacing:-.01em;margin:0}
.actions{display:flex;gap:8px;flex-wrap:wrap}
.btn{height:36px;padding:0 14px;background:transparent;border:1px solid var(--line-2);border-radius:999px;font-size:13px;cursor:pointer;white-space:nowrap}
.btn:hover{background:var(--hover)}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn--solid{background:var(--ink);color:#fff;border:none;font-weight:500}
.btn--solid:hover{background:var(--ink-hover)}
.btn--small{height:30px;padding:0 12px;font-size:12px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
@media (max-width:640px){ .topbar{padding:14px 16px} }

.ac{flex:1;width:100%;max-width:1200px;margin:0 auto;padding:28px;display:flex;flex-direction:column;gap:16px}
.drop{display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center;padding:56px 20px;border:1.5px dashed var(--line-2);border-radius:20px;background:var(--surface);cursor:pointer;transition:border-color .15s,background .15s}
.drop:hover,.drop.is-over{border-color:var(--accent);background:var(--accent-soft)}
.drop strong{font-size:16px}
.drop span{font-size:13px;color:var(--sub);line-height:1.6}
.drop-art{position:relative;display:flex;align-items:center;gap:5px;height:56px;margin-bottom:8px;padding:0 10px}
.drop-art i{width:6px;border-radius:3px;background:var(--accent);opacity:.85}
.drop-art i:nth-child(1){height:14px}.drop-art i:nth-child(2){height:30px}.drop-art i:nth-child(3){height:46px}
.drop-art i:nth-child(4){height:22px}.drop-art i:nth-child(5){height:52px}.drop-art i:nth-child(6){height:34px}
.drop-art i:nth-child(7){height:18px}.drop-art i:nth-child(8){height:40px}.drop-art i:nth-child(9){height:12px}
.drop-art b{position:absolute;top:-4px;bottom:-4px;width:3px;background:var(--ink);border-radius:2px}
.drop-art b:nth-of-type(1){left:30px}.drop-art b:nth-of-type(2){right:36px}
.alert{margin:0;padding:10px 14px;border-radius:10px;background:#fdecec;color:#9b2226;font-size:13px;line-height:1.6}

.editor{display:flex;flex-direction:column;gap:14px;animation:rise .25s ease}
.file-row{display:flex;justify-content:space-between;align-items:baseline;gap:12px;flex-wrap:wrap}
.file-name{display:flex;align-items:baseline;gap:10px;min-width:0}
.file-name strong{font-size:15px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:60vw}

.wave-card{padding:16px;background:var(--panel);border:1px solid var(--line);border-radius:18px;display:flex;flex-direction:column;gap:8px}
.wave-tools{display:flex;justify-content:space-between;align-items:center;gap:10px;flex-wrap:wrap}
.seg{display:flex;background:var(--soft);border-radius:999px;padding:3px;gap:2px;border:1px solid var(--line)}
.seg-btn{height:28px;padding:0 12px;border:none;background:transparent;border-radius:999px;font-size:12.5px;color:var(--sub);cursor:pointer;white-space:nowrap;flex:1}
.seg-btn.is-active{background:#fff;color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.12)}
.wave{position:relative;height:190px;border-radius:12px;background:#17161f;overflow:hidden;touch-action:none;cursor:crosshair;user-select:none;-webkit-user-select:none}
.wave canvas{display:block;width:100%;height:100%}
.shade{position:absolute;top:0;bottom:0;background:rgba(10,10,14,.6);pointer-events:none}
.shade--l{left:0}
.shade--r{right:0}
.sel{position:absolute;top:0;bottom:0;border-top:3px solid var(--accent);border-bottom:3px solid var(--accent);pointer-events:none}
.playhead{position:absolute;top:0;bottom:0;width:2px;margin-left:-1px;background:#fff;box-shadow:0 0 0 1px rgba(0,0,0,.3);pointer-events:none}
.handle{position:absolute;top:0;bottom:0;width:22px;margin-left:-11px;padding:0;border:0;background:transparent;cursor:ew-resize;touch-action:none}
.handle::before{content:"";position:absolute;top:0;bottom:0;left:9px;width:4px;background:var(--accent)}
.handle span{position:absolute;left:50%;transform:translateX(-50%);padding:2px 7px;border-radius:999px;background:var(--accent);color:#fff;font-size:11px;font-weight:500;white-space:nowrap;line-height:1.5}
.handle--start span{top:6px}
.handle--end span{bottom:6px}
.handle:focus-visible{outline:none}
.handle:focus-visible span{outline:2px solid #fff;outline-offset:1px}
.ruler{position:relative;height:16px;font-family:var(--mono);font-size:10.5px;color:var(--muted)}
.ruler span{position:absolute;top:0;transform:translateX(-50%);white-space:nowrap}
.ruler span::before{content:"";position:absolute;left:50%;top:-5px;width:1px;height:4px;background:var(--line-2)}
.wave-tip{margin:0;font-size:12px;color:var(--sub)}

.transport{display:flex;align-items:center;gap:14px 18px;flex-wrap:wrap;padding:14px 16px;background:var(--panel);border:1px solid var(--line);border-radius:18px}
.play{width:52px;height:52px;border-radius:50%;border:none;background:var(--accent);display:grid;place-items:center;cursor:pointer;flex:0 0 auto;transition:transform .1s}
.play:hover{background:var(--accent-hover)}
.play:active{transform:scale(.95)}
.ic-play{width:0;height:0;border-left:15px solid #fff;border-top:10px solid transparent;border-bottom:10px solid transparent;margin-left:4px}
.ic-pause{width:14px;height:17px;border-left:5px solid #fff;border-right:5px solid #fff}
.now{display:flex;flex-direction:column;gap:2px}
.now output{font-family:var(--mono);font-size:22px;font-weight:500;font-variant-numeric:tabular-nums}
.check{display:flex;align-items:center;gap:8px;font-size:13px;cursor:pointer}
.check input{width:16px;height:16px;accent-color:var(--accent)}
.times{margin-left:auto;display:flex;align-items:flex-end;gap:10px;flex-wrap:wrap}
.time{display:flex;flex-direction:column;gap:4px;font-size:12px;color:var(--ink-2)}
.time-input{width:118px;height:38px;padding:0 10px;border:1px solid var(--line-2);border-radius:10px;background:var(--surface);font-family:var(--mono);font-size:14px;color:var(--ink)}
.time-input:focus{outline:2px solid var(--accent);outline-offset:-1px}
.time-input.is-bad{border-color:#e5484d}
.time--len output{height:38px;display:flex;align-items:center;font-family:var(--mono);font-size:14px;color:var(--accent);font-weight:500}
.arrow{padding-bottom:9px;color:var(--muted)}

.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}
.box{display:flex;flex-direction:column;gap:12px;padding:16px;background:var(--panel);border:1px solid var(--line);border-radius:16px;min-width:0}
.box-title{margin:0;font-size:14px;font-weight:700}
.field{display:flex;flex-direction:column;gap:6px}
.field-label{display:flex;justify-content:space-between;font-size:12.5px;color:var(--ink-2)}
.field-label output{font-family:var(--mono);font-size:12px;color:var(--ink)}
input[type=range]{width:100%;accent-color:var(--accent)}
.fade-shape{height:40px;border-radius:8px;background:var(--soft);overflow:hidden}
.fade-shape svg{display:block;width:100%;height:100%}
.fade-shape path{fill:var(--accent-soft);stroke:var(--accent);stroke-width:2;vector-effect:non-scaling-stroke}
.vol-row{display:flex;gap:6px;flex-wrap:wrap}
.peak{margin:0;font-family:var(--mono);font-size:12px;color:var(--sub)}
.peak.is-clip{color:#c0262d}
.box--save{background:var(--panel-soft)}
.save-info{margin:0;font-size:12.5px;color:var(--sub);font-family:var(--mono)}
.btn--save{height:46px;font-size:14px;background:var(--accent)}
.btn--save:hover{background:var(--accent-hover)}
.note{margin:0;font-size:12px;line-height:1.65;color:var(--sub)}
.dot{display:inline-block;width:7px;height:7px;border-radius:50%;background:var(--accent);margin-right:6px;vertical-align:1px}

.toast{position:fixed;left:50%;bottom:28px;transform:translate(-50%,20px);background:var(--ink);color:#fff;padding:10px 18px;border-radius:999px;font-size:13px;opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:100;max-width:calc(100vw - 32px);text-align:center}
.toast.is-show{opacity:1;transform:translate(-50%,0)}
@keyframes rise{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

@media (max-width:900px){
  .cards{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .box--save{grid-column:1 / -1}
  .times{margin-left:0;width:100%}
}
@media (max-width:640px){
  .ac{padding:16px;gap:12px}
  .actions{width:100%}
  .actions .btn{flex:1}
  .drop{padding:36px 16px}
  .wave{height:150px}
  .cards{grid-template-columns:minmax(0,1fr)}
  .transport{padding:12px}
  .times{gap:8px}
  .time-input{width:104px}
  .arrow{display:none}
}
@media (prefers-reduced-motion:reduce){
  *{animation:none !important;transition:none !important}
}

/* 슬라이더 직접 입력칸 */
.field-label{align-items:center}
.field-label .tb-num{height:26px;font-size:12px}
.field .tb-presets{margin-top:0}
.tb-num-wrap .tb-num{color:var(--ink)}

/* 다크 모드 (인쇄는 라이트 그대로) */
@media screen{
  :root[data-theme="dark"]{
    color-scheme:dark;
    --bg:#141318; --surface:#1a1920; --panel:#1f1e26; --panel-soft:#24232c;
    --ink:#ecebf0; --ink-hover:#ffffff; --ink-2:#c9c7d1; --sub:#a09eab; --muted:#8a8895;
    --line:#2e2d36; --line-2:#393843; --line-3:#26252d; --hover:#2a2932; --soft:#26252d; --track:#34333d;
    --accent:#a494ff; --accent-hover:#b8abff; --accent-soft:rgba(164,148,255,.16);
  }
  :root[data-theme="dark"] .btn--solid,:root[data-theme="dark"] .toast,
  :root[data-theme="dark"] .handle span,:root[data-theme="dark"] .tb-presets button[aria-pressed="true"]{color:var(--bg)}
  :root[data-theme="dark"] .ic-play{border-left-color:var(--bg)}
  :root[data-theme="dark"] .ic-pause{border-left-color:var(--bg);border-right-color:var(--bg)}
  :root[data-theme="dark"] .seg-btn.is-active{background:var(--track);box-shadow:0 1px 3px rgba(0,0,0,.4)}
  :root[data-theme="dark"] .wave{border:1px solid var(--line-2)}
  :root[data-theme="dark"] .alert{background:rgba(229,72,77,.16);color:#ffaaad}
  :root[data-theme="dark"] .peak.is-clip{color:#ff8a8e}
  :root[data-theme="dark"] .time-input.is-bad{border-color:#ff6b70}
}