:root{
  --a:#22b573; --t:#e5484d; --g:#f08c1e; --c:#2f7fe0; --n:#8b98a5;
  --radius:10px;
}
html[data-theme="dark"]{
  color-scheme:dark;
  --bg:#070b10; --bg2:#0a1017; --panel:#0e1620; --panel2:#131f2d; --panel3:#182838;
  --ink:#e8f0f7; --muted:#8fa3b5; --faint:#5f7488;
  --line:#1e3042; --line2:#2a4258;
  --accent:#2fbf9b; --accent2:#4aa3e8; --accent-ink:#06281d;
  --warn:#e8a33d; --warn-bg:#2b2008; --bad:#f2706d; --good:#2fbf9b;
  --sel:#ffd84d; --motif:#b07fe8;
  --shadow:0 2px 10px rgba(0,0,0,.45);
  --tile-txt:#ffffff;
}
html[data-theme="light"]{
  color-scheme:light;
  --bg:#eef2f5; --bg2:#e6edf2; --panel:#ffffff; --panel2:#f2f6f9; --panel3:#e8eff5;
  --ink:#12222f; --muted:#54687a; --faint:#8496a6;
  --line:#d3dee7; --line2:#b9cbd9;
  --accent:#0e7c66; --accent2:#0b5fa5; --accent-ink:#ffffff;
  --warn:#9a6206; --warn-bg:#fdf3e0; --bad:#c0392b; --good:#0e7c66;
  --sel:#b8860b; --motif:#7c3aed;
  --shadow:0 1px 4px rgba(16,32,48,.12);
  --tile-txt:#ffffff;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--ink);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;font-size:15px;line-height:1.45;display:flex;flex-direction:column}
button{font:inherit;cursor:pointer;color:inherit}
input,select,textarea{font:inherit;color:var(--ink)}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
a{color:var(--accent2)}
:focus-visible{outline:2px solid var(--accent2);outline-offset:1px}

/* ============ TOP BAR ============ */
.topbar{flex:0 0 auto;display:flex;align-items:center;gap:16px;background:var(--bg2);border-bottom:1px solid var(--line);padding:9px 16px;flex-wrap:wrap}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:19px;letter-spacing:.14em;white-space:nowrap}
.logo .mark{width:34px;height:34px;flex:0 0 34px}
.topmeta{display:flex;align-items:center;gap:8px;flex-wrap:wrap;min-width:0}
.meta-item{background:var(--panel2);border:1px solid var(--line);border-radius:7px;padding:4px 10px;font-size:12.5px;color:var(--muted);white-space:nowrap}
.meta-item b{color:var(--ink);font-weight:700}
.meta-item.file{color:var(--ink);font-weight:600;max-width:300px;overflow:hidden;text-overflow:ellipsis}
.topbar .spacer{flex:1}
.scanbtn{background:var(--accent);color:var(--accent-ink);border:0;border-radius:8px;padding:10px 20px;font-weight:800;letter-spacing:.12em;font-size:14px;display:inline-flex;align-items:center;gap:9px}
.scanbtn .dot{width:9px;height:9px;border-radius:50%;background:currentColor;opacity:.55}
.scanbtn.on{background:var(--t);color:#fff}
.scanbtn.on .dot{opacity:1;animation:pulse 1s infinite}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.5)}}
.iconbtn{background:var(--panel2);border:1px solid var(--line);border-radius:8px;padding:8px 12px;font-size:13px;font-weight:600}
.iconbtn:hover{border-color:var(--line2)}

/* ============ TAB BAR ============ */
.tabbar{flex:0 0 auto;display:flex;gap:2px;background:var(--bg2);border-bottom:1px solid var(--line);padding:6px 12px;overflow-x:auto;scrollbar-width:none}
.tabbar::-webkit-scrollbar{display:none}
.tabbtn{flex:0 0 auto;background:none;border:0;border-radius:7px;padding:7px 13px;font-size:13.5px;color:var(--muted);font-weight:600;white-space:nowrap}
.tabbtn:hover{color:var(--ink);background:var(--panel2)}
.tabbtn.active{background:var(--panel3);color:var(--accent)}

/* ============ LAYOUT ============ */
main{flex:1;min-height:0;display:flex;flex-direction:column}
.view{display:none;flex:1;min-height:0;flex-direction:column}
.view.active{display:flex}
.view.scrollable{overflow-y:auto;display:none}
.view.scrollable.active{display:block}
.wrap{max-width:1180px;margin:0 auto;padding:20px 20px 56px}
h1{font-size:23px;margin:0 0 4px}
h2{font-size:17px;margin:0 0 10px}
h3{font-size:14.5px;margin:0 0 8px}
.sub{color:var(--muted);margin:0 0 16px}
.card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px 18px;margin-bottom:16px}
.grid{display:grid;gap:14px}
.grid.cols2{grid-template-columns:repeat(2,1fr)}
.grid.cols3{grid-template-columns:repeat(3,1fr)}
.grid.cols4{grid-template-columns:repeat(4,1fr)}
@media(max-width:900px){.grid.cols3,.grid.cols4{grid-template-columns:repeat(2,1fr)}}
@media(max-width:560px){.grid.cols2,.grid.cols3,.grid.cols4{grid-template-columns:1fr}}
.stat-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:13px 15px}
.stat-card .k{font-size:11.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.stat-card .v{font-size:24px;font-weight:700;margin-top:2px}
.stat-card .d{font-size:12.5px;color:var(--muted)}
.bar{height:8px;border-radius:99px;background:var(--panel3);overflow:hidden;margin-top:8px}
.bar>i{display:block;height:100%}
.btn{display:inline-flex;align-items:center;gap:7px;background:var(--accent);color:var(--accent-ink);border:0;border-radius:8px;padding:9px 15px;font-weight:700;font-size:14px}
html[data-theme="light"] .btn{color:#fff}
.btn:hover{filter:brightness(1.08)}
.btn.secondary{background:var(--panel2);color:var(--ink);border:1px solid var(--line)}
.btn.small{padding:6px 11px;font-size:13px}
.btn:disabled{opacity:.45;cursor:not-allowed}
textarea.seqin{width:100%;min-height:96px;border:1px solid var(--line);border-radius:8px;background:var(--panel2);padding:11px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12.5px;resize:vertical}
input[type=text],input[type=number],select{border:1px solid var(--line);border-radius:8px;background:var(--panel2);padding:8px 10px}
label.f{display:block;font-size:13px;font-weight:600;margin-bottom:5px}
.field{margin-bottom:12px}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.msg{border-radius:8px;padding:9px 13px;font-size:13.5px;margin-bottom:12px;display:none}
.msg.err{display:block;background:rgba(229,72,77,.14);color:var(--bad);border:1px solid var(--bad)}
.msg.ok{display:block;background:rgba(47,191,155,.13);color:var(--good);border:1px solid var(--line2)}
.note{background:var(--warn-bg);border:1px solid var(--line);border-radius:8px;padding:10px 14px;font-size:13.5px;margin-bottom:14px}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th{text-align:left;padding:8px 10px;border-bottom:2px solid var(--line);color:var(--muted);font-size:11.5px;text-transform:uppercase;letter-spacing:.05em}
td{padding:7px 10px;border-bottom:1px solid var(--line);vertical-align:top}
tr.clickable{cursor:pointer}
tr.clickable:hover td{background:var(--panel2)}
.tablewrap{overflow-x:auto}
@media(max-width:640px){
  .tablewrap table{min-width:0}
  .tablewrap thead{display:none}
  .tablewrap tr{display:block;border-bottom:2px solid var(--line);padding:6px 0}
  .tablewrap td{display:flex;justify-content:space-between;gap:12px;border-bottom:0;padding:4px 8px}
  .tablewrap td::before{content:attr(data-l);color:var(--muted);font-size:11.5px;text-transform:uppercase;letter-spacing:.04em}
}
.pill{display:inline-block;background:var(--panel2);border:1px solid var(--line);border-radius:99px;padding:2px 10px;font-size:12.5px;margin:2px 2px 2px 0}
.chk{display:inline-flex;gap:6px;align-items:center;font-size:14px;margin-right:14px;cursor:pointer}
.chk input{accent-color:var(--accent);width:16px;height:16px}
input[type=range]{accent-color:var(--accent)}
.seqtext{font-family:ui-monospace,Menlo,monospace;font-size:12.5px;word-break:break-all;background:var(--panel2);border:1px solid var(--line);border-radius:8px;padding:12px;max-height:300px;overflow:auto;white-space:pre-wrap}
.frameblock{margin-bottom:16px}
.frameblock .fh{font-weight:700;font-size:13.5px;margin-bottom:4px}
.aaseq{font-family:ui-monospace,Menlo,monospace;font-size:14px;letter-spacing:2px;word-break:break-all;line-height:2;background:var(--panel2);border:1px solid var(--line);border-radius:8px;padding:10px 12px}
.aa{display:inline-block;min-width:14px;text-align:center;border-radius:3px}
.aa.start{background:rgba(47,191,155,.35);font-weight:700}
.aa.stop{background:rgba(229,72,77,.35);font-weight:700}
.diff-mis{background:rgba(229,72,77,.4);border-radius:2px}
.diff-ok{color:var(--muted)}
.bend-hl{background:rgba(232,163,61,.45);border-radius:2px;font-weight:700}
.test-pass{color:var(--good);font-weight:600}
.test-fail{color:var(--bad);font-weight:600}

/* ============ SCANNER ============ */
.inputbar{flex:0 0 auto;background:var(--panel);border-bottom:1px solid var(--line);padding:10px 16px}
.inputhead{display:flex;align-items:baseline;gap:8px;flex-wrap:wrap}
.inputhead button{background:none;border:0;padding:0;font-weight:700;font-size:14px;color:var(--ink);cursor:pointer}
.inputhead span{color:var(--muted);font-size:12.5px}
.inputgrid{display:grid;grid-template-columns:1fr auto;gap:14px;margin-top:10px}
@media(max-width:760px){.inputgrid{grid-template-columns:1fr}}
.scanner{flex:1;min-height:0;display:grid;grid-template-columns:minmax(400px,1.25fr) minmax(330px,1fr);gap:0}
@media(max-width:900px){.scanner{grid-template-columns:1fr;grid-template-rows:minmax(340px,52vh) auto;overflow-y:auto}}
.panel{display:flex;flex-direction:column;min-height:0;min-width:0}
.panel.left{border-right:1px solid var(--line);background:var(--bg2)}
.panel.right{overflow-y:auto;background:var(--panel);padding:16px 18px}
@media(max-width:900px){.panel.left{border-right:0;border-bottom:1px solid var(--line)}.panel.right{overflow:visible}}
.panelhead{flex:0 0 auto;display:flex;align-items:center;gap:10px;padding:11px 16px;border-bottom:1px solid var(--line);flex-wrap:wrap}
.panelhead h2{margin:0;font-size:16px}
.panelhead .spacer{flex:1}
.zoomctl{display:inline-flex;align-items:center;gap:4px}
.zoomctl button{width:30px;height:30px;border-radius:7px;background:var(--panel2);border:1px solid var(--line);font-size:16px;font-weight:700;line-height:1}
.zoomctl span{font-size:12px;color:var(--muted);min-width:42px;text-align:center}
.scanctl{flex:0 0 auto;display:flex;align-items:center;gap:12px;padding:9px 16px;border-bottom:1px solid var(--line);flex-wrap:wrap;background:var(--panel)}
.scanctl label{font-size:12.5px;color:var(--muted);font-weight:600;display:inline-flex;align-items:center;gap:7px}
.scanctl input[type=range]{width:130px}
.jumpctl{display:flex;align-items:center;gap:8px;flex:1;min-width:220px}
.jumpctl input[type=range]{flex:1}
.jumpctl input[type=number]{width:92px}
.playbtn{background:var(--accent);color:var(--accent-ink);border:0;border-radius:8px;padding:8px 16px;font-weight:800;font-size:13.5px;letter-spacing:.05em}
html[data-theme="light"] .playbtn{color:#fff}
.playbtn.on{background:var(--t);color:#fff}
.motifbar{flex:0 0 auto;display:flex;align-items:center;gap:8px;padding:8px 16px;border-bottom:1px solid var(--line);flex-wrap:wrap;background:var(--panel)}
.motifbar input[type=text]{flex:1;min-width:130px;text-transform:uppercase}
.motifbar .mcount{font-size:12.5px;color:var(--muted)}

/* helix virtual list */
#helixScroll{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;position:relative;overscroll-behavior:contain}
#helixSpacer{position:relative;width:100%}
.hrow{position:absolute;left:0;right:0;display:flex;align-items:center}
.hpos{flex:0 0 62px;text-align:right;padding-right:10px;font-family:ui-monospace,monospace;font-size:11px;color:var(--faint)}
.hturn{flex:0 0 58px;font-size:10.5px;color:var(--accent2);font-weight:700;white-space:nowrap;overflow:visible}
.htrack{position:relative;flex:1;height:100%;min-width:0}
.hbackbone{position:absolute;top:50%;height:2px;background:var(--line2);transform:translateY(-50%);opacity:.5}
.hrung{position:absolute;top:50%;transform:translateY(-50%);border-top:2px dashed var(--line2);opacity:.85}
.htile{position:absolute;top:50%;transform:translate(-50%,-50%);display:grid;place-items:center;font-family:ui-monospace,monospace;font-weight:800;color:var(--tile-txt);border-radius:6px;cursor:pointer;user-select:none;box-shadow:0 1px 3px rgba(0,0,0,.35);border:2px solid transparent;z-index:2}
.htile.back{filter:brightness(.62) saturate(.85);z-index:1}
.htile.sel{border-color:var(--sel);box-shadow:0 0 0 3px var(--sel),0 0 18px rgba(255,216,77,.45);z-index:5;filter:none}
.htile.motif{border-color:var(--motif);box-shadow:0 0 0 2px var(--motif)}
.htile.motif.sel{border-color:var(--sel)}
.hrow.selrow{background:rgba(255,216,77,.07)}
.hgroove{flex:0 0 86px;font-size:10.5px;color:var(--warn);font-weight:600;white-space:nowrap;padding-left:6px}
.hstrandtag{position:absolute;top:2px;font-size:9.5px;color:var(--faint);font-family:ui-monospace,monospace;z-index:3;pointer-events:none}
.legend{display:flex;gap:12px;flex-wrap:wrap;font-size:12.5px;color:var(--muted)}
.legend .sw{display:inline-block;width:12px;height:12px;border-radius:3px;vertical-align:-1px;margin-right:5px}

/* right panel details */
.pairhead{font-size:21px;font-weight:800;margin:0 0 2px}
.pairhead span{color:var(--muted);font-weight:600;font-size:15px}
.strandline{display:flex;align-items:center;gap:10px;background:var(--panel2);border:1px solid var(--line);border-radius:9px;padding:10px 12px;margin-top:10px}
.strandline .tag{font-size:11px;font-weight:800;letter-spacing:.07em;color:var(--muted);text-transform:uppercase;flex:0 0 58px}
.strandline .big{width:38px;height:38px;flex:0 0 38px;border-radius:8px;display:grid;place-items:center;font-family:ui-monospace,monospace;font-weight:800;font-size:19px;color:#fff}
.strandline .nm{font-size:15.5px;font-weight:600}
.matchline{margin-top:10px;border-radius:9px;padding:11px 13px;font-size:14.5px;font-weight:600;border:1px solid var(--line2);background:rgba(47,191,155,.12)}
.matchline.amb{background:var(--panel2);color:var(--muted)}
.matchline .mtag{display:inline-block;font-size:11px;font-weight:800;letter-spacing:.08em;padding:2px 8px;border-radius:99px;background:var(--accent);color:var(--accent-ink);margin-right:8px;vertical-align:1px}
html[data-theme="light"] .matchline .mtag{color:#fff}
.matchline.amb .mtag{background:var(--n);color:#fff}
.stripwrap{margin-top:14px}
.stripwrap .cap{font-size:12px;color:var(--muted);margin-bottom:6px;font-weight:600}
.strip{display:flex;gap:3px;overflow-x:auto;padding:4px 2px;scrollbar-width:thin}
.stripcol{display:flex;flex-direction:column;gap:3px;align-items:center;flex:0 0 auto;cursor:pointer;border-radius:6px;padding:2px}
.stripcol .st{width:26px;height:26px;border-radius:5px;display:grid;place-items:center;font-family:ui-monospace,monospace;font-weight:800;font-size:13px;color:#fff;border:2px solid transparent}
.stripcol .sp{font-size:9px;color:var(--faint);font-family:ui-monospace,monospace}
.stripcol.cur{background:rgba(255,216,77,.1)}
.stripcol.cur .st{border-color:var(--sel)}
.stripcol.motif .st{border-color:var(--motif)}
.factbox{background:var(--panel2);border:1px solid var(--line);border-radius:9px;padding:12px 14px;margin-top:16px}
.factbox h3{color:var(--accent);font-size:13px;text-transform:uppercase;letter-spacing:.07em}
.factbox ul{margin:0;padding-left:18px;font-size:13.5px}
.factbox li{margin:3px 0}
.factbox li b{font-weight:700}
.ministats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:16px}
@media(max-width:480px){.ministats{grid-template-columns:repeat(2,1fr)}}
.ministat{background:var(--panel2);border:1px solid var(--line);border-radius:8px;padding:8px 10px;text-align:center}
.ministat .k{font-size:10.5px;color:var(--muted);text-transform:uppercase;letter-spacing:.05em}
.ministat .v{font-size:17px;font-weight:800}
.basebars{margin-top:12px}
.basebar{display:flex;align-items:center;gap:8px;font-size:12px;margin:4px 0}
.basebar .bl{flex:0 0 14px;font-family:ui-monospace,monospace;font-weight:800}
.basebar .bar{flex:1;margin:0}
.basebar .bv{flex:0 0 86px;text-align:right;color:var(--muted);font-family:ui-monospace,monospace;font-size:11.5px}
#gcMini{margin-top:14px}
#gcMini svg{width:100%;height:auto;display:block;cursor:pointer}
footer.foot{flex:0 0 auto;color:var(--faint);font-size:12px;text-align:center;padding:8px 12px;border-top:1px solid var(--line);background:var(--bg2)}
.tooltip{position:fixed;z-index:60;background:var(--ink);color:var(--bg);padding:5px 9px;border-radius:6px;font-size:12px;font-family:ui-monospace,monospace;pointer-events:none;display:none}
@media(max-width:640px){
  .logo{font-size:16px}
  .meta-item.file{max-width:150px}
  .hpos{flex-basis:48px}
  .hturn{flex-basis:44px;font-size:9.5px}
  .hgroove{display:none}
  .topmeta .hideS{display:none}
}
@media (prefers-reduced-motion: reduce){ .scanbtn.on .dot{animation:none} }