:root{
  --bg:#0b1020; --panel:#12162a; --card:#1a1f38; --line:rgba(255,255,255,.12);
  --tx:#fff; --mut:#a9b0d6; --acc:#ff4fa3; --acc2:#7c4dff; --ok:#3ddc97; --warn:#ffb74d; --err:#ff6b6b;
  --key:#2c3047; --r:4px;
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;height:100%;background:var(--bg);color:var(--tx);font-family:system-ui,Roboto,"Segoe UI",Arial,sans-serif;overflow:hidden}
button{font:inherit;color:inherit;cursor:pointer}
button:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #ffd54f;outline-offset:2px}

/* ---------- layout ---------- */
#app{position:fixed;inset:0;display:grid;grid-template-rows:minmax(0,60fr) minmax(0,40fr);background:#000}
#stage{position:relative;overflow:hidden;background:linear-gradient(135deg,#0d1b3d,#3a1c71)}
#bg,#mv{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;background:transparent}
#mv{object-fit:contain;background:#000;display:none;z-index:1}
#mv.on{display:block}
#dim{position:absolute;inset:0;background:rgba(0,0,0,.06);pointer-events:none}
#overlay{position:absolute;inset:0;z-index:2;display:flex;align-items:center;justify-content:center;pointer-events:none;text-align:center}
#topbar{position:absolute;z-index:5;top:0;left:0;right:0;display:flex;align-items:center;gap:6px;padding:calc(8px + env(safe-area-inset-top)) 10px 0 12px}
#rlist{flex:1;min-width:0;display:flex;gap:6px;overflow:hidden;white-space:nowrap;font-weight:700;color:#cfe8ff;text-shadow:0 0 4px #000}
#rlist span{background:rgba(28,36,49,.8);border-radius:14px;padding:3px 10px;font-size:14px}
.pill{background:rgba(28,36,49,.85);color:#4dd0e1;border:0;border-radius:24px;padding:6px 16px;font-size:20px;font-weight:800}
.icon{background:transparent;border:0;font-size:22px;padding:8px 10px;border-radius:10px;color:#fff;opacity:.85}
.icon:hover{background:rgba(255,255,255,.1)}
#padtab{display:none}

#pad{display:flex;flex-direction:column;padding:6px 6px calc(6px + env(safe-area-inset-bottom));background:linear-gradient(#10142a,#0a0d1c);min-height:0}
.row-keys{display:flex;min-height:0}
#controls{flex:12}
#transport{flex:13}
#keys{flex:75;display:flex;min-height:0}

/* landscape / TV: stage fills, keypad is a side strip that can slide away */
@media (orientation:landscape) and (min-width:700px){
  #app{grid-template-rows:none;grid-template-columns:minmax(0,1fr) 0}
  #app.pad-open{grid-template-columns:minmax(0,1fr) clamp(230px,24vw,330px)}
  #pad{overflow:hidden;padding-right:calc(6px + env(safe-area-inset-right))}
  #app:not(.pad-open) #pad{visibility:hidden}
  #padtab{display:block;position:absolute;z-index:6;right:0;top:50%;transform:translateY(-50%);background:rgba(20,24,46,.85);border:1px solid var(--line);border-right:0;border-radius:10px 0 0 10px;padding:22px 8px;font-size:18px;color:#fff}
  #app.pad-open #padtab{transform:translateY(-50%) scaleX(-1)}
}

/* ---------- keys: rectangular, raised ---------- */
.key{flex:1;margin:3px;min-width:0;border:1px solid rgba(255,255,255,.16);border-radius:var(--r);
  background:linear-gradient(var(--k1,#3a3f5c),var(--k2,#24283e));box-shadow:0 3px 0 var(--ke,#14172a);
  color:#fff;font-weight:700;font-size:clamp(14px,2.4vmin,20px);display:flex;align-items:center;justify-content:center;padding:0 4px;white-space:nowrap;overflow:hidden;user-select:none;position:relative;top:0}
.key:active,.key.hit{top:3px;box-shadow:0 0 0 var(--ke,#14172a);filter:brightness(1.15)}
.key[disabled]{opacity:.4}
.key.digit{font-size:clamp(22px,4.6vmin,34px);font-weight:500}
.key.green{--k1:#3d9a43;--k2:#2a7a30;--ke:#17501b}
.key.red{--k1:#d93a3a;--k2:#b32525;--ke:#701515}
.key.brown{--k1:#6d4a3f;--k2:#4a322b;--ke:#2b1a15;color:#d7c4bc}
.key.purple{--k1:#8a2cb5;--k2:#6a1b9a;--ke:#3e0f5c}
.key.navy{--k1:#1d54b0;--k2:#0b3d91;--ke:#06255a}
.key.blue{--k1:#2a7bd6;--k2:#1565c0;--ke:#0a3a73}
.key.orange{--k1:#e4801c;--k2:#c25f00;--ke:#7a3a00}
.key.redd{--k1:#d4482a;--k2:#a8300f;--ke:#651b05}
.key.lime{--k1:#2e8a2e;--k2:#1f6b1f;--ke:#0f400f}
.stepper{flex:1;margin:3px;display:flex;border-radius:var(--r);overflow:hidden;border:1px solid rgba(255,255,255,.16);background:linear-gradient(var(--k1),var(--k2));box-shadow:0 3px 0 var(--ke)}
.stepper button{width:30%;border:0;background:rgba(0,0,0,.2);color:#fff;font-size:22px;font-weight:700}
.stepper button:active{background:rgba(255,255,255,.25)}
.stepper span{flex:1;display:flex;align-items:center;justify-content:center;font-weight:800;color:#ffd54f;font-size:clamp(13px,2.2vmin,17px);white-space:nowrap}
.kleft{flex:3;display:grid;grid-template-columns:repeat(3,1fr);grid-template-rows:repeat(4,1fr)}
.kright{flex:1;display:grid;grid-template-rows:repeat(4,1fr)}
.kleft .key,.kright .key{margin:3px}

/* ---------- overlay text ---------- */
.outlined{font-weight:800;color:#fff;-webkit-text-stroke:0;text-shadow:-2px -2px 0 #000,2px -2px 0 #000,-2px 2px 0 #000,2px 2px 0 #000,0 0 8px #000}
.idle{display:flex;flex-direction:column;align-items:center;gap:2px;padding:0 16px}
.idle .t{font-size:clamp(22px,5vmin,38px)}
.idle .n{font-size:clamp(34px,8vmin,58px);color:#ffa000;letter-spacing:2px}
.idle .pv{font-size:clamp(13px,2.4vmin,17px);font-weight:600;margin-top:6px;text-shadow:0 0 4px #000}
.count3{font-size:clamp(90px,26vmin,170px);color:#ff5252}
.intro{width:100%;height:100%;display:flex;flex-direction:column;justify-content:space-between;padding:8vmin 4vw 6vmin;align-items:center}
.intro .title{font-size:clamp(22px,5vmin,38px)}
.intro .artist{font-size:clamp(13px,2.4vmin,18px);color:#ffff6b;margin-top:4px}
.prog{width:min(85%,900px);height:14px;border-radius:7px;background:rgba(255,255,255,.15);border:1px solid rgba(255,255,255,.25);margin:14px auto 8px;overflow:hidden}
.prog i{display:block;height:100%;width:0;background:linear-gradient(90deg,#69f0ae,#18ffff);box-shadow:0 0 12px #69f0ae}
.getready{letter-spacing:2px;font-weight:700;color:#ffffffb3;text-shadow:0 0 4px #000;font-size:clamp(13px,2.4vmin,18px)}
.getready.go{color:#69f0ae}
.lyrics{display:flex;flex-direction:column;gap:0;width:100%}
.slot{height:clamp(46px,11vmin,92px);display:flex;align-items:center;justify-content:center;white-space:nowrap;overflow:hidden}
.line{font-weight:800;color:#fff;font-size:clamp(28px,7.4vmin,74px);text-shadow:-2px -2px 0 #000,2px -2px 0 #000,-2px 2px 0 #000,2px 2px 0 #000,0 0 6px #000;transform-origin:center}
.line .w.sung{color:#69f0ae}
.hold{position:absolute;left:0;right:0;bottom:6vmin;padding:0 10px}
.score{background:rgba(0,0,0,.55);width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center}
.score .lbl{font-size:clamp(20px,4.5vmin,30px)}
.score .num{font-size:clamp(70px,22vmin,130px);color:#ffc107;line-height:1}
.score .rank{opacity:0;transform:scale(.4);transition:.3s cubic-bezier(.2,1.6,.4,1)}
.score .rank.on{opacity:1;transform:scale(1)}
.score .rank b{display:block;font-size:clamp(44px,13vmin,70px)}
.score .rank span{font-size:clamp(16px,3.4vmin,24px)}
.mvhint{position:absolute;left:0;right:0;bottom:8px;font-size:12px;opacity:.7}

/* ---------- start screen ---------- */
#start{position:fixed;inset:0;z-index:100;background:radial-gradient(900px 500px at 50% -10%,#3a1c71,transparent 60%),#0b1020;display:flex;align-items:center;justify-content:center;text-align:center;padding:20px}
.start-box{max-width:520px}
.logo{font-size:72px}
.start-box h1{margin:6px 0 10px;background:linear-gradient(90deg,#ffeb3b,var(--acc));-webkit-background-clip:text;background-clip:text;color:transparent;font-size:36px}
.start-box p{color:var(--mut);line-height:1.5}
.start-box small{display:block;margin-top:14px;color:var(--mut)}

/* ---------- buttons, forms ---------- */
.btn{border:1px solid var(--line);background:rgba(255,255,255,.1);border-radius:var(--r);padding:11px 16px;font-weight:700;font-size:15px}
.btn:hover{background:rgba(255,255,255,.18)}
.btn.primary{background:linear-gradient(135deg,var(--acc2),var(--acc));border-color:transparent}
.btn.danger{background:#b32525;border-color:transparent}
.btn.small{padding:8px 11px;font-size:14px;flex:0 0 auto}
.btn.huge{padding:16px 34px;font-size:20px;margin-top:10px}
.btn.wide{width:100%;margin-top:10px}
.text{width:100%;padding:12px 14px;border-radius:var(--r);border:1.5px solid var(--acc);background:rgba(255,255,255,.08);color:#fff;font-size:16px}
.text.big{font-size:18px;border-radius:30px}

/* ---------- modal + pages ---------- */
#layer{position:fixed;inset:0;z-index:50;pointer-events:none}
#layer>*{pointer-events:auto}
.modal-wrap{position:fixed;inset:0;background:rgba(0,0,0,.65);display:flex;align-items:center;justify-content:center;padding:16px;z-index:60}
.modal{background:#1a1a4e;border:1px solid var(--line);border-radius:18px;padding:20px;width:min(520px,100%);max-height:90vh;overflow:auto}
.modal h2{margin:0 0 10px;font-size:20px;text-align:center}
.modal p{color:#d7dcff;line-height:1.45}
.modal-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:16px;flex-wrap:wrap}
.center{text-align:center}
.page-wrap{position:fixed;inset:0;z-index:55;background:var(--bg)}
.page{height:100%;display:flex;flex-direction:column;max-width:900px;margin:0 auto}
.page-bar{display:flex;align-items:center;gap:6px;padding:calc(8px + env(safe-area-inset-top)) 10px 8px;border-bottom:1px solid var(--line)}
.page-bar h2{flex:1;margin:0;font-size:20px}
.page-body{flex:1;overflow:auto;padding:12px 12px calc(30px + env(safe-area-inset-bottom))}
.cards{display:grid;gap:12px}
.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:14px 16px}
.card h3{margin:0 0 10px;display:flex;gap:10px;align-items:center;font-size:18px}
.card h4{margin:16px 0 8px;font-size:15px}
.ico{font-size:20px}
.help{color:var(--mut);font-size:13.5px;line-height:1.4;margin:10px 0 0}
.label{margin:14px 0 4px;font-size:14px}
.count{color:#80d8ff;font-size:13px;margin:8px 0}
.warn{color:var(--warn)}.ok{color:var(--ok)}
.empty{color:var(--mut);text-align:center;padding:20px 0}
.row{display:flex;align-items:center;gap:8px;margin-top:8px}
.row.wrap{flex-wrap:wrap}
.row input[type=range]{flex:1}
.val{min-width:46px;text-align:right;color:var(--mut);font-size:13px}
.stack{display:grid;gap:8px;margin-top:10px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.chip{border:1px solid var(--line);background:rgba(255,255,255,.08);border-radius:20px;padding:8px 14px;font-size:14px}
.chip.on{background:var(--acc);border-color:transparent}
.chip.sq{border-radius:var(--r);min-width:38px;padding:8px 0}
.chip.warn.on{background:#c62828}
.seg{display:flex;margin:6px 0}
.segbtn{flex:1;border:1px solid var(--line);background:rgba(255,255,255,.06);padding:11px 4px;font-size:14px;font-weight:600}
.segbtn:first-child{border-radius:var(--r) 0 0 var(--r)}.segbtn:last-child{border-radius:0 var(--r) var(--r) 0}
.segbtn.on{background:linear-gradient(135deg,var(--acc2),var(--acc));border-color:transparent}
.switch{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:8px 0}
.switch small{display:block;color:var(--mut);margin-top:2px}
.switch input{width:46px;height:26px;accent-color:var(--acc)}
input[type=range]{accent-color:var(--acc);height:28px}
.file-row{display:flex;align-items:center;gap:8px;padding:6px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.fname{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.fname small{display:block;font-size:11px}
.info{width:100%;border-collapse:collapse}
.info td{padding:6px 4px;border-bottom:1px solid var(--line);font-size:14px}
.info td:last-child{text-align:right;color:var(--mut)}
.mix-ch{padding:8px 0;border-bottom:1px solid rgba(255,255,255,.06)}
.mix-name{display:flex;justify-content:space-between;gap:8px}
.mix-name small{color:var(--mut)}

/* ---------- song lists ---------- */
.tabs{display:flex;gap:8px;margin-bottom:10px}
.tab{flex:1;border:1px solid var(--line);background:rgba(255,255,255,.06);border-radius:var(--r);padding:12px;font-weight:700}
.tab.on{background:linear-gradient(135deg,var(--acc2),var(--acc));border-color:transparent}
.searchbar{display:flex;gap:6px;align-items:center}
.mic.live{background:#c62828;border-radius:50%}
.song-row{display:flex;align-items:center;gap:10px;padding:10px 0;border-bottom:1px solid rgba(255,255,255,.08)}
.song-row.off{opacity:.55}
.code{background:linear-gradient(135deg,var(--acc2),var(--acc));border-radius:6px;padding:6px 8px;font-weight:800;font-size:13px;letter-spacing:1px;min-width:36px;text-align:center}
.meta{flex:1;min-width:0}
.meta b{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.meta span{display:block;color:var(--mut);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.tag{font-size:11px;border:1px solid var(--line);border-radius:10px;padding:3px 8px;color:var(--mut);white-space:nowrap}
.tag.ok{color:var(--ok)}.tag.warn{color:var(--warn)}
.az{display:flex;gap:6px;overflow-x:auto;padding:4px 0 8px}
.az .chip{flex:0 0 auto}
.pack-head{display:flex;justify-content:space-between;gap:10px;align-items:flex-start}
.pack-head small{display:block;color:var(--mut);margin-top:2px}
.bar{height:10px;background:rgba(255,255,255,.12);border-radius:5px;overflow:hidden;margin:10px 0 4px}
.bar i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--acc2),var(--acc));transition:width .15s}
.banner.err{background:#5a1f1f;border:1px solid #a33;border-radius:12px;padding:12px;line-height:1.4}
.setup-row{margin:8px 0}
#toast{position:fixed;left:50%;bottom:calc(24px + env(safe-area-inset-bottom));transform:translateX(-50%);background:#000d;padding:10px 18px;border-radius:20px;opacity:0;transition:.25s;pointer-events:none;max-width:90%;text-align:center;z-index:200}
#toast.show{opacity:1}