:root{
  --bg:#05060f; --ink:#e8f6ff; --dim:#8fa6c4;
  --neon:#39f2d0; --neon2:#b06bff; --hot:#ff5d7a; --gold:#ffd447;
  --panel:rgba(10,16,32,.9); --line:rgba(120,220,255,.22);
}
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{
  background:var(--bg);color:var(--ink);
  font-family:"Noto Sans TC","PingFang TC","Hiragino Sans",system-ui,-apple-system,sans-serif;
  overflow:hidden;-webkit-tap-highlight-color:transparent;user-select:none;
}
#app{position:fixed;inset:0;display:grid;place-items:center;
  background:radial-gradient(1200px 700px at 50% 0%,#101a3a 0%,#05060f 60%),var(--bg);}
canvas#stage{display:block;width:100%;height:100%;touch-action:manipulation}

/* 疊層畫面 */
.screen{position:absolute;inset:0;display:grid;place-items:center;padding:16px;overflow:auto;
  background:radial-gradient(900px 600px at 50% 40%,rgba(10,20,45,.74),rgba(3,4,10,.95));
  backdrop-filter:blur(6px);z-index:20;animation:fade .2s ease}
.screen.hidden{display:none}
@keyframes fade{from{opacity:0}to{opacity:1}}
.panel{width:min(440px,100%);background:var(--panel);border:1px solid var(--line);border-radius:18px;
  padding:22px;text-align:center;box-shadow:0 24px 70px rgba(0,0,0,.6),0 0 60px rgba(57,242,208,.07)}
.panel.wide{width:min(760px,100%)}
h1,h2{margin:0 0 10px}
h2{font-size:21px;letter-spacing:.05em}
h2.mt{margin-top:24px}
.logo{font-family:Orbitron,sans-serif;font-weight:900;font-size:clamp(36px,7.5vw,60px);letter-spacing:.1em;
  line-height:1;color:var(--neon);text-shadow:0 0 12px rgba(57,242,208,.7),0 0 42px rgba(57,242,208,.35)}
.logo span{color:var(--neon2);text-shadow:0 0 12px rgba(176,107,255,.7),0 0 42px rgba(176,107,255,.35);margin-left:.14em}
.sub{color:var(--dim);margin:0 0 16px;font-size:14px}
.hint{color:var(--dim);font-size:12px;margin:14px 0 0;line-height:1.7}
.hint.left{text-align:left;margin:0 0 12px}

.btnRow{display:flex;gap:10px;justify-content:center;flex-wrap:wrap;margin-top:18px}
.btnRow.col{flex-direction:column}
.btn{cursor:pointer;font:inherit;font-size:15px;font-weight:700;color:var(--ink);
  background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:12px;padding:11px 20px;
  transition:transform .12s,background .18s,border-color .18s}
.btn:hover{background:rgba(255,255,255,.1);transform:translateY(-1px);border-color:rgba(120,220,255,.5)}
.btn:active{transform:translateY(1px)}
.btn.primary{background:linear-gradient(180deg,rgba(57,242,208,.22),rgba(57,242,208,.08));
  border-color:rgba(57,242,208,.55);color:#d8fff7;box-shadow:0 0 22px rgba(57,242,208,.2)}
.btn.ghost{color:var(--dim);font-weight:500;font-size:13px;padding:8px 14px}

.diffRow{display:flex;gap:8px;justify-content:center;flex-wrap:wrap;margin:6px 0}
.diffRow.small .diff{padding:6px 12px;font-size:12px}
.diff{cursor:pointer;border-radius:999px;padding:9px 16px;font-size:13px;font-weight:700;
  border:1px solid var(--line);background:rgba(255,255,255,.04);color:var(--dim);transition:.18s}
.diff:hover{color:var(--ink)}
.diff.on{color:#04121a;background:var(--neon);border-color:var(--neon);box-shadow:0 0 20px rgba(57,242,208,.4)}
.diff.on[data-d="hard"]{background:var(--hot);border-color:var(--hot);color:#2a0410}

/* 關卡列表 */
.levelGrid{display:grid;grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:10px;margin-top:12px;
  max-height:54vh;overflow:auto;padding:2px}
.unitTag{grid-column:1/-1;text-align:left;font-size:12px;letter-spacing:.16em;color:var(--dim);margin:12px 0 0}
.unitTag b{color:var(--ink);letter-spacing:.06em;font-size:14px;margin-right:8px}
.lv{cursor:pointer;text-align:left;border:1px solid var(--line);border-radius:14px;padding:11px 12px;
  background:rgba(255,255,255,.04);transition:.16s;position:relative;overflow:hidden}
.lv:hover{background:rgba(255,255,255,.09);transform:translateY(-2px)}
.lv .no{font-family:Orbitron,sans-serif;font-size:11px;color:var(--neon);letter-spacing:.12em}
.lv .nm{font-size:14px;font-weight:700;margin:3px 0 6px}
.lv .st{font-size:13px;letter-spacing:2px;color:#3b4a63}
.lv .st b{color:var(--gold);font-weight:400;text-shadow:0 0 10px rgba(255,212,71,.6)}
.lv .pc{float:right;font-size:11px;color:#7f93ad;font-family:Orbitron,sans-serif}
.lv .bar{position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--neon);box-shadow:0 0 14px var(--neon)}

/* 設定 */
.setRow{display:flex;align-items:center;justify-content:space-between;gap:14px;text-align:left;
  padding:11px 2px;border-bottom:1px dashed rgba(255,255,255,.08)}
.setRow label{font-size:14px;display:flex;flex-direction:column;gap:2px}
.setRow label small{color:var(--dim);font-size:11px}
.slide{display:flex;align-items:center;gap:10px}
.slide span{font-family:Orbitron,sans-serif;font-size:12px;color:var(--dim);min-width:52px;text-align:right}
input[type=range]{width:150px;accent-color:var(--neon)}
input.num{width:78px;background:rgba(255,255,255,.06);border:1px solid var(--line);color:var(--ink);
  border-radius:8px;padding:6px 8px;font:inherit;font-size:13px}
input[type=file]{font-size:12px;color:var(--dim);max-width:210px}
.sw{cursor:pointer;width:46px;height:26px;border-radius:999px;border:1px solid var(--line);
  background:rgba(255,255,255,.06);position:relative;transition:.18s;flex:none}
.sw::after{content:'';position:absolute;top:3px;left:3px;width:18px;height:18px;border-radius:50%;
  background:#6a7d94;transition:.18s}
.sw.on{background:rgba(57,242,208,.3);border-color:var(--neon)}
.sw.on::after{left:23px;background:var(--neon);box-shadow:0 0 10px var(--neon)}

/* 說明 */
.helpGrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:8px;text-align:left}
.helpGrid div{display:flex;gap:10px;align-items:center;background:rgba(255,255,255,.04);
  border:1px solid var(--line);border-radius:10px;padding:9px 12px}
.helpGrid b{font-family:Orbitron,sans-serif;font-size:12px;color:var(--neon);min-width:74px}
.helpGrid span{font-size:12.5px;color:var(--dim)}
.noteTable{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:8px}
.noteTable .row{display:flex;align-items:center;gap:8px;background:rgba(255,255,255,.04);
  border:1px solid var(--line);border-radius:10px;padding:6px 10px}
.noteTable .row div{display:flex;flex-direction:column;line-height:1.35}
.noteTable .row b{font-size:13px;font-weight:700}
.noteTable .row small{font-size:11px;color:var(--dim)}

/* 成績 */
.stars{font-size:32px;letter-spacing:8px;margin:4px 0 10px;color:#2b3950}
.stars b{color:var(--gold);font-weight:400;text-shadow:0 0 22px rgba(255,212,71,.7);animation:pop .4s backwards}
.stars b:nth-of-type(2){animation-delay:.14s}
.stars b:nth-of-type(3){animation-delay:.28s}
@keyframes pop{from{transform:scale(0);opacity:0}70%{transform:scale(1.25)}to{transform:scale(1);opacity:1}}
.resGrid{display:grid;grid-template-columns:1fr 1fr;gap:16px;align-items:start}
@media(max-width:620px){.resGrid{grid-template-columns:1fr}}
.stats{display:grid;gap:5px;font-size:13.5px;color:var(--dim)}
.stats div{display:flex;justify-content:space-between;border-bottom:1px dashed rgba(255,255,255,.08);padding:5px 2px}
.stats div span:last-child{color:var(--ink);font-family:Orbitron,sans-serif}
.chartBox{background:rgba(255,255,255,.03);border:1px solid var(--line);border-radius:12px;padding:8px}
.chartBox canvas{width:100%;height:auto;display:block}
.chartCap{font-size:11px;color:var(--dim);margin-top:6px}

/* 練習工具列 */
.playbar{position:absolute;left:50%;transform:translateX(-50%);bottom:14px;display:flex;gap:8px;align-items:center;
  background:rgba(8,14,28,.72);border:1px solid var(--line);border-radius:999px;padding:6px 10px;z-index:14;
  backdrop-filter:blur(6px)}
.playbar.hidden{display:none}
.pb{cursor:pointer;font:inherit;font-size:13px;font-weight:700;color:var(--ink);background:rgba(255,255,255,.06);
  border:1px solid var(--line);border-radius:999px;padding:7px 14px;transition:.16s;white-space:nowrap}
.pb:hover{background:rgba(57,242,208,.18);border-color:rgba(57,242,208,.5)}
.pb.tiny{padding:4px 9px;font-size:14px}
.bpmBox{display:flex;align-items:center;gap:6px;padding:0 4px;font-family:Orbitron,sans-serif;font-size:14px}
.bpmBox small{font-size:10px;color:var(--dim)}
.taphint{position:absolute;bottom:64px;left:50%;transform:translateX(-50%);font-size:12px;color:var(--dim);z-index:13}
.taphint.hidden{display:none}
.taphint b{color:var(--neon)}

#tools{position:absolute;right:12px;top:12px;display:flex;gap:8px;z-index:30}
.chip{cursor:pointer;width:36px;height:36px;border-radius:10px;background:rgba(10,16,32,.6);
  border:1px solid var(--line);color:var(--dim);font-size:15px;transition:.16s}
.chip:hover{color:var(--ink);border-color:rgba(120,220,255,.55)}
.chip.off{color:#4b5a72;text-decoration:line-through}


/* 角色 */
.dogCanvas{display:block;margin:-10px auto -6px;width:220px;height:190px}
.dogCanvas.small{width:200px;height:170px;margin:-6px auto -4px}
/* 三段式切換 */
.seg{display:flex;gap:6px}
.segBtn{cursor:pointer;font:inherit;font-size:13px;font-weight:700;color:var(--dim);
  background:rgba(255,255,255,.05);border:1px solid var(--line);border-radius:10px;padding:7px 14px;transition:.16s}
.segBtn:hover{color:var(--ink)}
.segBtn.on{color:#04121a;background:var(--neon);border-color:var(--neon);box-shadow:0 0 16px rgba(57,242,208,.35)}
/* 進階區 */
.adv{margin-top:6px;text-align:left}
.adv summary{cursor:pointer;font-size:13px;color:var(--dim);padding:10px 2px;list-style:none}
.adv summary::-webkit-details-marker{display:none}
.adv summary::before{content:'▸ ';color:var(--neon)}
.adv[open] summary::before{content:'▾ '}
/* 單元標題附狗狗頭像 */
.unitTag{display:flex;align-items:center;gap:8px}
.unitTag canvas{width:56px;height:52px;flex:none}
.unitTag div{display:flex;flex-direction:column;line-height:1.5}
.unitTag small{color:var(--dim);font-size:11px}
.logo{font-size:clamp(30px,6.5vw,44px);letter-spacing:.04em}

/* 啟動失敗提示 */
#bootFail{display:none;position:fixed;inset:auto 16px 16px 16px;z-index:99;
  background:rgba(40,10,20,.96);border:1px solid var(--hot);border-radius:14px;padding:16px 18px;
  color:var(--ink);font-size:14px;line-height:1.7;box-shadow:0 20px 60px rgba(0,0,0,.6)}
#bootFail b{color:var(--hot)}
#bootFail p{margin:6px 0 0;color:var(--dim);font-size:13px}
#bootFail pre{margin:8px 0 0;font-size:11px;color:#ffb3c0;white-space:pre-wrap;word-break:break-all}
.ver{position:absolute;right:14px;bottom:10px;font-family:Orbitron,sans-serif;font-size:10px;color:#3d4d66}

/* 關卡卡片（九關全開，左邊是陪練的狗） */
.lv{display:flex;align-items:center;gap:10px;padding:10px 12px}
.lv canvas{width:54px;height:50px;flex:none}
.lvText{flex:1;min-width:0;text-align:left}
.lv .nm{margin:2px 0 4px}
.levelGrid{grid-template-columns:repeat(auto-fill,minmax(220px,1fr));max-height:62vh}

/* 麥克風設定 */
.micPanel{display:none;padding:2px 0 6px}
.micPanel.on{display:block}
.micBarWrap{height:12px;border-radius:6px;background:rgba(255,255,255,.07);overflow:hidden;margin:4px 0 8px}
.micBar{height:100%;width:0;border-radius:6px;background:var(--neon);transition:width .05s linear}
.micBar.hit{background:var(--gold);box-shadow:0 0 16px var(--gold)}
#micTip{margin:0;font-size:11.5px}
#micTip.warn{color:#ffc08a}