:root{
  --bg:#0e1116; --bg2:#151a22; --bg3:#1d2430; --line:#2a3340;
  --fg:#e8edf4; --dim:#8b97a8; --dim2:#5d6878;
  --acc:#4cc2ff; --acc2:#1b6e94;
  --hot:#ff4d5e; --hot2:#5a1d24;
  --ok:#36d399; --warn:#ffc14d;
  --c-m:#5aa9ff;   /* 男聲：藍 */
  --c-f:#ff5c6c;   /* 女聲：紅 */
  --c-b:#4ade80;   /* 合唱：綠 */
  --r:10px;
  --fs-en:clamp(19px,2.0vw,30px);
  --fs-zh:clamp(14px,1.25vw,19px);
}
*{box-sizing:border-box}
[hidden]{display:none !important}
html,body{height:100%;margin:0}
body{
  background:var(--bg); color:var(--fg);
  font-family:"Segoe UI","Noto Sans TC","PingFang TC","Microsoft JhengHei",system-ui,sans-serif;
  overflow:hidden; -webkit-font-smoothing:antialiased;
}
button{font:inherit;color:inherit;cursor:pointer;border:0;background:none}
button:disabled{opacity:.4;cursor:default}
input,textarea,output{font:inherit;color:inherit}
kbd{
  display:inline-block;min-width:1.5em;padding:1px 6px;margin:0 1px;
  background:var(--bg3);border:1px solid var(--line);border-bottom-width:2px;
  border-radius:5px;font-size:.82em;font-family:inherit;text-align:center;color:var(--fg)
}
code{background:var(--bg3);padding:1px 5px;border-radius:4px;font-size:.9em}
.dim{color:var(--dim)}
hr{border:0;border-top:1px solid var(--line);margin:18px 0}

/* ---------- loader ---------- */
#loader{position:fixed;inset:0;display:grid;place-items:center;background:radial-gradient(60% 60% at 50% 35%,#18212e,#0b0e13);z-index:50}
.load-box{text-align:center;max-width:460px;padding:0 24px}
.load-box h1{margin:0;font-size:40px;letter-spacing:.5px}
.load-box h1 span{color:var(--acc);font-weight:400}
.load-box .sub{margin:2px 0 26px;color:var(--dim);letter-spacing:4px;text-transform:uppercase;font-size:12px}
.load-box .bar{height:6px;border-radius:3px;background:var(--bg3);overflow:hidden}
#loadBar{height:100%;width:0;background:linear-gradient(90deg,var(--acc2),var(--acc));transition:width .25s}
#loadMsg{color:var(--dim);font-size:13px;margin:12px 0 18px;min-height:1.2em}
.err{color:var(--hot);font-size:13px;line-height:1.6;text-align:left;background:#20141700;border-left:3px solid var(--hot);padding:8px 12px}
.primary{background:var(--acc);color:#06121b;font-weight:700;padding:10px 22px;border-radius:var(--r)}
.primary:hover{filter:brightness(1.1)}

/* ---------- layout ---------- */
#app{height:100%;display:grid;grid-template-rows:auto auto minmax(0,1fr) auto auto auto}
header{display:flex;align-items:center;gap:14px;padding:9px 16px;background:var(--bg2);border-bottom:1px solid var(--line)}
.title{display:flex;align-items:baseline;gap:10px;flex:1;min-width:0}
.title strong{font-size:19px;letter-spacing:.3px;white-space:nowrap}
.title em{color:var(--dim);font-style:normal;font-size:12.5px}
.keytag{color:var(--warn);font-size:12px;font-variant-numeric:tabular-nums;white-space:nowrap}
.hdr-btns{display:flex;gap:8px;flex-wrap:wrap}

.tgl,.ghost{padding:7px 13px;border-radius:9px;background:var(--bg3);border:1px solid var(--line);font-size:13px;white-space:nowrap}
.tgl:hover,.ghost:hover{border-color:#3d4a5d;background:#222b38}
.tgl.on{background:var(--acc2);border-color:var(--acc);color:#eaf7ff}
.tgl.on b{color:#fff}
.ghost.sm{padding:5px 9px;font-size:12px}

/* ---------- section nav ---------- */
#sectionBar{display:flex;gap:6px;padding:8px 16px;overflow-x:auto;background:var(--bg2);border-bottom:1px solid var(--line);scrollbar-width:thin}
#sectionBar button{
  padding:6px 13px;border-radius:999px;font-size:13px;white-space:nowrap;
  background:var(--bg3);border:1px solid var(--line);position:relative
}
#sectionBar button:hover{background:#263140}
#sectionBar button.on{background:var(--acc);color:#06121b;border-color:var(--acc);font-weight:700}
#sectionBar button i{font-style:normal;opacity:.55;font-size:11px;margin-left:5px}
#sectionBar button.on i{opacity:.7}

/* ---------- lyrics ---------- */
#lyricWrap{position:relative;overflow:hidden;background:
  radial-gradient(90% 70% at 50% 0%,#141b25,#0e1116)}
#lyricPad{height:100%;overflow-y:auto;padding:12px 6vw 55vh;scrollbar-width:none}
#lyricPad::-webkit-scrollbar{width:0}
#lyricWrap.hidden #lyricPad{visibility:hidden}
.lrow{padding:7px 0;cursor:pointer;transition:opacity .25s,transform .25s;max-width:1100px;margin:0 auto}
.lrow .en{font-size:calc(var(--fs-en) * var(--lyr-scale,1));line-height:1.3;color:#6f7d90;transition:color .2s,text-shadow .2s;font-weight:600;letter-spacing:.2px}
.lrow .zh{font-size:calc(var(--fs-zh) * var(--lyr-scale,1));color:#56616f;margin-top:3px;line-height:1.35}

/* 逐字聲部顏色：沒標註的字維持上面的顏色 */
.w{transition:opacity .2s}
.w.v-m{color:var(--c-m)}
.w.v-f{color:var(--c-f)}
.w.v-b{color:var(--c-b)}
.lrow:not(.cur) .w{opacity:.74}
.lrow.past .w{opacity:.55}
.lrow.cur .w{opacity:1}
.lrow:hover .en{color:#9fb0c4}
.lrow.past .en{color:#515d6d}
.lrow.cur .en{color:#fff;text-shadow:0 0 22px rgba(76,194,255,.45)}
.lrow.cur .zh{color:var(--acc)}
.lrow.cur{transform:scale(1.012);transform-origin:left center}
.lrow.next .en{color:#8a99ad}
.lrow.sec{margin-top:26px;padding-top:4px;cursor:default}
.lrow.sec:first-child{margin-top:0}
.lrow.sec .tag{display:inline-block;font-size:11px;letter-spacing:3px;color:var(--dim2);text-transform:uppercase;border-top:1px solid var(--line);padding-top:8px;min-width:120px}
#lyricWrap.zh-cur .lrow:not(.cur) .zh{display:none}
#lyricWrap.zh-off .zh{display:none}
.empty{position:absolute;inset:0;display:grid;place-content:center;justify-items:center;gap:6px;text-align:center;padding:0 24px}
.empty p{margin:2px 0}
.empty button{margin-top:16px}

/* ---------- strip ---------- */
#stripWrap{position:relative;background:var(--bg2);border-top:1px solid var(--line);padding:8px 16px 4px}
#strip{display:block;width:100%;height:68px;border-radius:8px;cursor:pointer}
.hint{font-size:11px;color:var(--dim2);padding:3px 2px 0}

/* ---------- bar grid ---------- */
#gridWrap{background:var(--bg2);padding:4px 16px 10px;max-height:34vh;overflow-y:auto;scrollbar-width:thin}
#grid{display:grid;grid-template-columns:repeat(16,1fr);gap:3px}
.cell{
  position:relative;height:40px;border-radius:5px;background:var(--bg3);
  border:1px solid transparent;display:flex;flex-direction:column;justify-content:center;
  font-size:11px;color:var(--dim);font-variant-numeric:tabular-nums;
  cursor:pointer;overflow:hidden;user-select:none
}
.cell:nth-child(16n+1){margin-left:0}
.cell:nth-child(4n+1){margin-left:5px}
.cell:hover{border-color:#44546a;color:var(--fg)}
.cell .fill{position:absolute;inset:0;background:var(--secclr,#2b3645);opacity:.5;z-index:0}
.cell .pg{position:absolute;left:0;top:0;bottom:0;background:rgba(255,255,255,.17);z-index:1}
.cell .sn{                       /* 段落名：只有每段第一個小節有 */
  position:relative;z-index:2;height:13px;line-height:13px;font-size:10px;
  padding:0 3px;text-align:left;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
  color:#dfe8f3;font-weight:700;letter-spacing:.2px
}
.cell .n{position:relative;z-index:2;text-align:center}
.cell.b4 .n{color:#b9c6d6;font-weight:700}
.cell.secstart{border-left:2px solid var(--secclr,#5a6b80)}
.cell.secstart .sn{text-shadow:0 1px 3px #000a}

/* 框選：未開循環 = 淡藍色；開了循環 = 黃色底 */
.cell.sel .fill{background:#4cc2ff;opacity:.3}
.cell.sel{border-color:#4cc2ff}
.cell.sel .n,.cell.sel .sn{color:#eaf7ff}
#grid.looping .cell.sel .fill{background:#ffc14d;opacity:.5}
#grid.looping .cell.sel{border-color:#ffc14d}
#grid.looping .cell.sel .n,#grid.looping .cell.sel .sn{color:#2a1f05}
#grid.looping .cell.sel.b4 .n{color:#1a1403}

/* 困難：只畫紅色底線，底色維持段落顏色 */
.cell.diff::after{content:"";position:absolute;left:0;right:0;bottom:0;height:4px;background:var(--hot);z-index:3}

.cell.cur{border-color:#fff}
.cell.cur .n{color:#fff;font-weight:700}

/* ---------- footer ---------- */
footer{display:flex;align-items:center;gap:10px 18px;flex-wrap:wrap;padding:9px 16px;background:var(--bg3);border-top:1px solid var(--line)}
.grp{display:flex;align-items:center;gap:7px}
.grp>label{font-size:12px;color:var(--dim)}
.transport button{width:38px;height:38px;border-radius:9px;background:#243040;border:1px solid var(--line);font-size:14px;display:grid;place-items:center}
.transport button:hover{background:#2c3a4c}
.transport button.play{width:50px;background:var(--acc);color:#06121b;border-color:var(--acc);font-size:17px}
.transport button.play:hover{filter:brightness(1.1)}
.time{font-variant-numeric:tabular-nums;font-size:14px;margin-left:4px;letter-spacing:.3px}
.time i{color:var(--dim);font-style:normal;font-size:12px}
.pill{font-size:12px;padding:4px 10px;border-radius:999px;background:#202936;border:1px solid var(--line);white-space:nowrap}
.pill.hot{color:#ffb3bb;border-color:#7d3340}
.stepper button{width:28px;height:28px;border-radius:7px;background:#243040;border:1px solid var(--line);display:grid;place-items:center;font-size:14px}
.stepper button:hover{background:#2c3a4c}
.stepper output{min-width:52px;text-align:center;font-variant-numeric:tabular-nums;font-size:13px}
.vol{margin-left:auto}
.vol input{width:110px;accent-color:var(--acc)}

/* ---------- panels ---------- */
#modalBg{position:fixed;inset:0;background:#05070acc;backdrop-filter:blur(2px);z-index:60}
.panel{
  position:fixed;z-index:61;left:50%;top:50%;transform:translate(-50%,-50%);
  width:min(560px,92vw);max-height:88vh;overflow-y:auto;
  background:var(--bg2);border:1px solid var(--line);border-radius:14px;
  padding:18px 22px 20px;box-shadow:0 24px 70px #000a
}
.panel.wide{width:min(1000px,94vw)}
.panel h2{margin:0 0 14px;font-size:17px;display:flex;align-items:center}
.panel h3{margin:18px 0 8px;font-size:13px;color:var(--dim);letter-spacing:1px;text-transform:uppercase}
.panel p{font-size:13px;line-height:1.7;margin:0 0 12px}
.panel .x{margin-left:auto;font-size:15px;color:var(--dim);padding:2px 6px;border-radius:6px}
.panel .x:hover{background:var(--bg3);color:var(--fg)}
.row-end{display:flex;gap:10px;justify-content:flex-end;align-items:center;margin-top:14px;flex-wrap:wrap}
.kb{display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:7px 18px;font-size:13px}
.kb div{color:var(--dim)}
.tips{font-size:13px;line-height:1.8;color:var(--dim);padding-left:20px;margin:0}
.tips b{color:var(--fg)}

.syncrow{display:flex;align-items:center;gap:8px;justify-content:center;margin:6px 0 12px}
.syncrow button{padding:7px 12px;border-radius:8px;background:var(--bg3);border:1px solid var(--line);font-size:13px;font-variant-numeric:tabular-nums}
.syncrow button:hover{background:#263140}
.syncrow output{min-width:92px;text-align:center;font-size:17px;font-variant-numeric:tabular-nums;color:var(--acc)}
#syncRange{width:100%;accent-color:var(--acc)}
.gridform{display:flex;gap:12px;flex-wrap:wrap}
.gridform label{font-size:12px;color:var(--dim);display:flex;flex-direction:column;gap:5px}
.gridform input{width:140px;background:var(--bg3);border:1px solid var(--line);border-radius:8px;padding:7px 10px;font-variant-numeric:tabular-nums}

/* diff list */
.difflist{display:flex;flex-wrap:wrap;gap:7px}
.difflist button{padding:6px 11px;border-radius:8px;background:var(--hot2);border:1px solid #8d3440;color:#ffd0d5;font-size:13px;font-variant-numeric:tabular-nums}
.difflist button:hover{filter:brightness(1.2)}
.difflist .rng{background:#2a1d20}

/* sections editor */
.secrow{display:flex;align-items:center;gap:8px;margin-bottom:7px}
.secrow input[type=text]{flex:1;background:var(--bg3);border:1px solid var(--line);border-radius:8px;padding:7px 10px}
.secrow input[type=number]{width:78px;background:var(--bg3);border:1px solid var(--line);border-radius:8px;padding:7px 8px;font-variant-numeric:tabular-nums}
.secrow .del{color:var(--dim);padding:4px 8px;border-radius:6px}
.secrow .del:hover{background:var(--hot2);color:#ffd0d5}
.secrow .t{font-size:11px;color:var(--dim2);width:52px;text-align:right;font-variant-numeric:tabular-nums}

/* lyric editor */
.tabs{display:flex;gap:6px;margin-bottom:14px;border-bottom:1px solid var(--line)}
.tab{padding:8px 14px;font-size:13px;color:var(--dim);border-bottom:2px solid transparent;border-radius:8px 8px 0 0}
.tab:hover{color:var(--fg);background:#1a2230}
.tab.on{color:var(--fg);border-bottom-color:var(--acc);background:var(--bg3)}
.tabpane{display:none}
.tabpane.on{display:block}
.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.two label{display:flex;flex-direction:column;gap:6px;font-size:12px;color:var(--dim)}
textarea{
  background:var(--bg);border:1px solid var(--line);border-radius:10px;padding:10px 12px;
  min-height:38vh;resize:vertical;line-height:1.55;font-size:13.5px;
  font-family:ui-monospace,"Cascadia Mono",Consolas,"Noto Sans TC",monospace
}
#jsonTa{width:100%;min-height:34vh;font-size:12.5px}
.syncbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:10px}
.syncbar button{padding:8px 14px;border-radius:9px;background:var(--bg3);border:1px solid var(--line);font-size:13px}
.syncbar button:hover{background:#263140}
.syncbar .primary{background:var(--acc);color:#06121b}
.chk{display:flex;align-items:center;gap:6px;font-size:12px;color:var(--dim);cursor:pointer}
.chk input{accent-color:var(--acc);width:15px;height:15px}
.chk code{font-size:11px}
.row-end .chk{margin-right:auto}
.syncbar select{background:var(--bg3);border:1px solid var(--line);border-radius:7px;padding:5px 8px;font-size:12px}
.syncbar [data-shift]{padding:6px 10px;font-size:12px;font-variant-numeric:tabular-nums}
.synclist{max-height:40vh;overflow-y:auto;border:1px solid var(--line);border-radius:10px}
.sline{display:flex;align-items:center;gap:10px;padding:6px 10px;border-bottom:1px solid #202833;font-size:13px}
.sline:last-child{border-bottom:0}
.sline.cur{background:#1b2c39}
.sline.cur .idx{color:var(--acc)}
.sline .idx{width:30px;color:var(--dim2);font-variant-numeric:tabular-nums;text-align:right}
.sline input{width:84px;background:var(--bg3);border:1px solid var(--line);border-radius:7px;padding:4px 7px;font-variant-numeric:tabular-nums;text-align:right}
.sline .txt{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sline .txt small{color:var(--dim);margin-left:8px}
.sline .mk{padding:3px 8px;border-radius:6px;background:var(--bg3);border:1px solid var(--line);font-size:11px}
.sline .mk:hover{background:#2c3a4c}
.sline.nostamp input{border-color:#5c4420;color:var(--warn)}

/* 檔案選擇 */
#pickBox{margin-top:18px;text-align:left}
#pickBox h2{font-size:16px;margin:0 0 8px;text-align:center}
#pickBox p{font-size:12.5px;line-height:1.7;margin:0 0 10px;color:var(--dim)}
#pickBox p.small{font-size:11.5px;line-height:1.6}
#pickBox .primary{width:100%;margin:6px 0 12px}
.pick{display:flex;flex-direction:column;gap:5px;font-size:12px;color:var(--dim);margin-bottom:10px}
.pick>span{font-weight:700;color:var(--fg)}
.pick input[type=file]{
  background:var(--bg3);border:1px dashed var(--line);border-radius:9px;
  padding:9px 10px;font-size:12px;width:100%;cursor:pointer
}
.pick input[type=file]::file-selector-button{
  background:var(--acc2);color:#eaf7ff;border:0;border-radius:7px;
  padding:5px 11px;margin-right:10px;cursor:pointer;font:inherit;font-size:12px
}
.pick.sm{flex-direction:row;align-items:center;gap:8px;margin:0}
.pick.sm input[type=file]{width:auto;padding:6px 8px}
.pickrow{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin-bottom:8px}
.small{font-size:11.5px}
#audioInfo{font-size:12.5px;line-height:1.8;margin-bottom:10px}
#audioInfo b{color:var(--fg)}
#audioInfo .miss{color:var(--warn)}

/* 關男聲 / 關女聲 切換鈕 */
#muteBtn.on-m{background:#1d4a73;border-color:var(--c-m);color:#dbeeff}
#muteBtn.on-f{background:#6b2630;border-color:var(--c-f);color:#ffe0e4}

/* 歌詞字級調整（標題列） */
.fsz{display:inline-flex;align-items:center;gap:2px;background:var(--bg3);border:1px solid var(--line);border-radius:9px;padding:2px 4px}
.fsz button{padding:4px 7px;border-radius:6px;font-size:12px;color:var(--dim);line-height:1}
.fsz button:hover{background:#2c3a4c;color:var(--fg)}
.fsz output{font-size:11px;color:var(--dim);min-width:36px;text-align:center;font-variant-numeric:tabular-nums}

/* 聲部標註分頁 */
.vlegend{display:inline-block;padding:1px 8px;border-radius:999px;background:var(--bg3);
  border:1px solid var(--line);font-size:12px;margin:0 2px;font-weight:700}
.vlegend.v-m{color:var(--c-m);border-color:#2d5c88}
.vlegend.v-f{color:var(--c-f);border-color:#8a3340}
.vlegend.v-b{color:var(--c-b);border-color:#2a6b45}
.voicelist{max-height:46vh;overflow-y:auto;border:1px solid var(--line);border-radius:10px}
.vrow{display:flex;align-items:flex-start;gap:10px;padding:7px 10px;border-bottom:1px solid #202833}
.vrow:last-child{border-bottom:0}
.vrow.cur{background:#1b2c39}
.vrow .idx{width:26px;flex:none;color:var(--dim2);font-size:12px;text-align:right;
  font-variant-numeric:tabular-nums;padding-top:4px}
.vrow .vbtns{display:flex;gap:3px;flex:none;padding-top:1px}
.vrow .vbtns button{width:26px;height:24px;border-radius:6px;background:var(--bg3);
  border:1px solid var(--line);font-size:12px;line-height:1;color:var(--dim);display:grid;place-items:center}
.vrow .vbtns button:hover{background:#2c3a4c}
.vrow .vbtns button.on{color:#06121b;font-weight:700}
.vrow .vbtns button[data-v=m].on{background:var(--c-m);border-color:var(--c-m)}
.vrow .vbtns button[data-v=f].on{background:var(--c-f);border-color:var(--c-f)}
.vrow .vbtns button[data-v=b].on{background:var(--c-b);border-color:var(--c-b)}
.vrow .vtext{flex:1;min-width:0;font-size:15px;line-height:1.5;color:#8d9aab;word-break:break-word}
.vrow .vtext small{display:block;color:var(--dim2);font-size:12px;margin-top:2px}
.vrow .vtime{flex:none;width:52px;text-align:right;color:var(--dim2);font-size:11px;
  font-variant-numeric:tabular-nums;padding-top:5px}
.w.tap{cursor:pointer;border-radius:4px;padding:0 1px}
.w.tap:hover{background:#2c3a4c;outline:1px solid var(--line)}

#toast{
  position:fixed;left:50%;bottom:86px;transform:translate(-50%,14px);
  background:#0b1016ee;border:1px solid var(--line);border-radius:10px;
  padding:9px 16px;font-size:13px;z-index:70;opacity:0;pointer-events:none;
  transition:opacity .2s,transform .2s;box-shadow:0 10px 30px #0008
}
#toast.show{opacity:1;transform:translate(-50%,0)}

@media (max-width:860px){
  #grid{grid-template-columns:repeat(8,1fr)}
  .two{grid-template-columns:1fr}
  .vol{margin-left:0}
}
@media (max-width:760px){
  header{flex-wrap:wrap;gap:8px}
  .title{flex:1 0 100%}
  .keytag{margin-left:auto}
  .hdr-btns{flex:1 0 100%}
  .hdr-btns button{font-size:12px;padding:6px 10px}
  #lyricPad{padding:10px 5vw 55vh}
  footer{gap:8px 12px}
  .time{margin-left:0}
}

/* ===================================================================
   橫式寬螢幕：左欄小節格、右欄歌詞，段落列與總覽軸移到下方，
   控制列維持最下面。小節一排 4 格（超寬螢幕 8 格）。
   =================================================================== */
@media (min-width:1000px) and (orientation:landscape){
  :root{--sidew:clamp(420px,42vw,720px)}
  #app{
    grid-template-columns:var(--sidew) minmax(0,1fr);
    grid-template-rows:auto minmax(0,1fr) auto auto auto;
    grid-template-areas:
      "hd    hd"
      "bars  lyr"
      "sec   sec"
      "strip strip"
      "ft    ft";
  }
  header{grid-area:hd}
  #gridWrap{
    grid-area:bars;max-height:none;height:100%;
    padding:8px 10px 12px;border-right:1px solid var(--line)
  }
  #lyricWrap{grid-area:lyr}
  #sectionBar{grid-area:sec;border-top:1px solid var(--line);border-bottom:0}
  #stripWrap{grid-area:strip;border-top:1px solid var(--line)}
  footer{grid-area:ft}

  /* 一排 4 小節：每一排剛好是一個 4 小節樂句，不需要額外分隔 */
  #grid{grid-template-columns:repeat(4,1fr)}
  .cell:nth-child(4n+1){margin-left:0}

  /* 右欄空間更大，少留點上下留白，一次看到更多句 */
  #lyricPad{padding:10px 2.5vw 50vh}
  .lrow{max-width:none}
}

/* 寬一點就排 8 小節（中間保留 4 小節分隔），列數少一半、比較好找 */
@media (min-width:1200px) and (orientation:landscape){
  :root{--sidew:clamp(480px,44vw,1000px)}
  #grid{grid-template-columns:repeat(8,1fr)}
  .cell:nth-child(4n+1){margin-left:5px}
  .cell:nth-child(8n+1){margin-left:0}
}