:root{
  --bg:#0a0c11; --bg-deep:#06080c; --panel:#11141b; --panel-2:#161a23;
  --line:#1d2230; --line-2:#2a3142;
  --text:#e7ecf3; --muted:#6c7689; --dim:#3d4555;
  --hot:#ff2d7a; --amber:#ffb000; --cyan:#00d4ff; --lime:#bfff00; --danger:#ff3344;
  --mono:"JetBrains Mono",ui-monospace,Consolas,monospace;
  --sans:"Barlow Condensed",Helvetica,Arial,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{height:100%;scrollbar-gutter:stable}
html:has(.overlay.open){overflow:hidden}   /* lock background scroll while a modal is open */
body{min-height:100%}
body{
  font-family:var(--sans);font-weight:500;letter-spacing:.02em;color:var(--text);
  background:
    radial-gradient(circle at 12% 0%, rgba(255,45,122,.06), transparent 42%),
    radial-gradient(circle at 90% 100%, rgba(0,212,255,.05), transparent 46%),
    var(--bg);
  background-attachment:fixed;min-height:100vh;-webkit-font-smoothing:antialiased;
}
#app{min-height:100vh;display:flex;flex-direction:column}

/* top chrome (sticky app bar + transport) */
.topbar{position:sticky;top:0;z-index:40;background:linear-gradient(180deg,#0d1018,var(--bg));border-bottom:1px solid var(--line-2)}
.topbar-inner{max-width:960px;margin:0 auto;padding:0 18px}
.wrap{max-width:960px;margin:0 auto;width:100%;flex:1;padding:24px 18px 40px;background:repeating-conic-gradient(#0c0e15 0% 25%, #0a0c11 0% 50%) 0 / 24px 24px}

header.app-bar{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:nowrap;padding:11px 0}
.brand{display:flex;align-items:center;gap:13px;flex:1 1 auto;min-width:0}
.brand .glyph{width:22px;height:22px;background:var(--hot);clip-path:polygon(0 0,60% 0,100% 30%,100% 100%,40% 100%,0 70%);flex:0 0 auto}
.brand h1{font-family:var(--sans);font-size:18px;line-height:1;font-weight:800;letter-spacing:.22em;text-transform:uppercase}
.brand p{font-family:var(--sans);font-size:11px;color:var(--muted);margin-top:4px;letter-spacing:.28em;text-transform:uppercase}
.scope-wrap{border:1px solid var(--line-2);background:var(--bg-deep);border-radius:3px;overflow:hidden;width:clamp(96px,26vw,200px);height:38px;flex:0 0 auto}
/* Header action buttons: undo / redo / settings / help (icon-only). */
.header-actions{display:flex;align-items:center;gap:6px;flex:0 0 auto}
.hbtn{width:34px;height:30px;display:grid;place-items:center;background:transparent;border:1px solid var(--line);border-radius:3px;color:var(--muted);cursor:pointer;transition:color .12s,border-color .12s}
.hbtn .svg-icon{width:14px;height:14px}
.hbtn:hover:not(:disabled){color:var(--hot);border-color:var(--hot)}
.hbtn:disabled{opacity:.4;cursor:default}
canvas{display:block;width:100%;height:100%}

/* tabs */
.tabs{display:flex;margin-bottom:22px;border:1px solid var(--line-2);border-radius:3px;overflow:hidden;background:var(--bg-deep)}
.tab{flex:1;font-family:var(--sans);font-weight:600;text-transform:uppercase;letter-spacing:.2em;
  font-size:13px;padding:14px 10px;background:transparent;border:none;border-right:1px solid var(--line);cursor:pointer;color:var(--muted);transition:color .12s,background .12s}
.tab:last-child{border-right:none}
.tab:hover{color:var(--text);background:rgba(255,255,255,.02)}
.tab.on{background:var(--panel);color:var(--hot)}
.tab .tab-icon{display:inline-block;margin-right:7px;font-size:14px;letter-spacing:0;opacity:.85}
/* Settings / Help: icon-only, compact (don't take an equal flex share). */
.tab.tab-icon-only{flex:0 0 auto;padding:14px 18px;display:flex;align-items:center;justify-content:center}
.tab.tab-icon-only .tab-icon{margin-right:0}
.tabpane{display:none}
.tabpane.active{display:block}

.panel{background:var(--panel);border:1px solid var(--line-2);border-radius:3px;padding:18px;margin-bottom:20px}
.panel > .lab{font-family:var(--mono);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.22em;color:var(--muted);display:flex;align-items:center;gap:10px;margin-bottom:16px}
.panel > .lab::after{content:"";flex:1;height:1px;background:var(--line-2)}

.grid{display:flex;flex-wrap:wrap;gap:7px}
.chip{font-family:var(--sans);font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.08em;background:var(--panel-2);
  border:1px solid var(--line-2);border-radius:3px;padding:9px 13px;cursor:pointer;color:var(--text);
  transition:border-color .12s,color .12s,background .12s;user-select:none}
.chip:hover{border-color:var(--hot);color:var(--hot)}
.chip:active{transform:translateY(1px)}
.chip.on{background:var(--hot);color:var(--bg);border-color:var(--hot)}
.chip.on.teal{background:var(--cyan);border-color:var(--cyan);color:var(--bg)}
.chip.deg{min-width:52px;text-align:center;font-size:14px}
.row{display:flex;flex-wrap:wrap;gap:22px;align-items:flex-start}
.row + .row{margin-top:16px}
.col{display:flex;flex-direction:column;gap:9px}
.col > span.sub{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}

.readout{margin-top:18px;display:flex;align-items:center;gap:18px;flex-wrap:wrap;
  background:var(--panel-2);border:1px solid var(--line-2);border-radius:3px;padding:14px 16px}
.nameline{display:flex;align-items:center;gap:12px}
.readout .name{font-family:"Heebo",var(--sans);font-size:40px;font-weight:900;letter-spacing:-.01em;line-height:1}
.pill{font-family:var(--mono);font-weight:700;font-size:13px;background:transparent;color:var(--cyan);
  border:1px solid var(--cyan);border-radius:20px;padding:4px 12px;letter-spacing:.06em}
.readout .notes{font-family:var(--mono);font-size:12px;color:var(--muted);margin-top:6px;letter-spacing:.04em}
.readout .actions{margin-left:auto;display:flex;gap:8px;align-items:center}
.btn{font-family:var(--sans);font-weight:600;font-size:13px;text-transform:uppercase;letter-spacing:.16em;
  cursor:pointer;border:1px solid var(--line-2);border-radius:3px;padding:10px 16px;transition:border-color .12s,color .12s,background .12s;background:transparent;color:var(--text)}
.btn:hover{border-color:var(--hot);color:var(--hot)}
.btn:active{transform:translateY(1px)}
/* Inline SVG mask-icon sizing within buttons (see css/icons.css). */
.btn .btn-icon{margin-right:7px}
.btn.icon{display:inline-grid;place-items:center;padding:10px 12px}     /* undo / redo: icon only */
.modal .close{display:grid;place-items:center}
.modal .close .svg-icon{width:16px;height:16px}
#licenseModal .lic-x{display:grid;place-items:center}
.card .pp{display:flex;align-items:center;justify-content:center}
.card .pp .btn-icon{margin-right:4px}
.btn.add{background:var(--hot);color:var(--bg);border-color:var(--hot)}
.btn.add:hover{background:#ff5c95;border-color:#ff5c95;color:var(--bg)}
.btn.danger{background:transparent;color:var(--danger);border-color:var(--danger)}
.btn.danger:hover{background:var(--danger);color:var(--bg)}
.btn[disabled]{opacity:.4;pointer-events:none}

.strip{display:flex;flex-wrap:wrap;gap:10px;padding:8px 2px 12px;min-height:128px}
.card{flex:0 0 auto;width:112px;background:var(--panel-2);border:1px solid var(--line-2);border-radius:3px;
  padding:12px 8px 8px;text-align:center;position:relative;cursor:pointer;transition:border-color .12s,background .12s}
.card:hover{border-color:var(--line-2);background:#1b212e}
.card .rn{font-family:var(--mono);font-size:11px;font-weight:700;color:var(--cyan);min-height:15px;letter-spacing:.06em}
.card .cn{font-family:"Heebo",var(--sans);font-size:22px;font-weight:900;line-height:1;margin:3px 0 4px;white-space:nowrap;overflow:hidden}
.card .cnotes{font-family:var(--mono);font-size:9px;color:var(--muted);min-height:22px;line-height:1.4;letter-spacing:.04em}
.card .cbeats{font-family:var(--mono);font-size:9px;font-weight:700;color:var(--cyan);margin-top:4px;letter-spacing:.06em}
.card.active .cbeats{color:rgba(10,12,17,.75)}
.card.dragging{opacity:.5;transform:scale(.96)}
.card.drop-target{outline:2px dashed var(--cyan);outline-offset:2px}
.card{touch-action:none}
.pgrouplab{font-family:var(--mono);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.18em;color:var(--cyan);margin:4px 0 8px}
.card .pill-row{display:flex;flex-direction:column;gap:6px;margin-top:8px}
.card .arp,.card .pp{font-family:var(--mono);font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;border:1px solid var(--line-2);border-radius:3px;padding:5px 0;cursor:pointer;transition:background .12s,color .12s,border-color .12s}
.card .arp{background:transparent;color:var(--muted)}
.card .arp.on{background:var(--hot);color:var(--bg);border-color:var(--hot)}
.card .pp{background:transparent;color:var(--cyan)}
.card .pp:hover{background:var(--cyan);color:var(--bg);border-color:var(--cyan)}
.card.active{background:var(--hot);border-color:var(--hot)}
.card.active .cn{color:var(--bg)}
.card.active .rn,.card.active .cnotes{color:rgba(10,12,17,.75)}
.card.active .arp,.card.active .pp{border-color:rgba(10,12,17,.4);color:var(--bg)}
.card.editing{outline:2px solid var(--cyan);outline-offset:2px}
.empty{font-family:var(--mono);color:var(--muted);font-size:13px;display:flex;align-items:center;justify-content:center;width:100%;height:108px;border:1px dashed var(--line-2);border-radius:3px}
/* Per-card reorder chevrons: hidden on desktop (drag-to-reorder), shown on phones. */
.card-move{display:none}
.cmove{width:26px;height:19px;display:grid;place-items:center;background:transparent;border:1px solid var(--line-2);border-radius:3px;color:var(--muted);cursor:pointer;transition:color .12s,border-color .12s}
.cmove .svg-icon{width:13px;height:13px}
.cmove:hover:not(:disabled){color:var(--cyan);border-color:var(--cyan)}
.cmove:disabled{opacity:.3;cursor:default}

.exp-info{font-family:var(--mono);font-size:13px;color:var(--text);margin-bottom:4px;letter-spacing:.03em}
.exp-info b{color:var(--cyan);font-weight:700}
.exp-info + .exp-info{margin-top:9px}
.exp-note{font-family:var(--mono);font-size:11px;color:var(--muted);margin-top:12px;min-height:16px;letter-spacing:.03em}

/* transport (in the top chrome) */
.transportbar{border-top:1px solid var(--line)}
.transportbar .inner{display:flex;gap:16px;align-items:center;flex-wrap:wrap;padding:10px 0}
.play{font-size:15px;padding:12px 26px;background:var(--hot);color:var(--bg);border-color:var(--hot);flex:0 0 auto}
.play:hover{background:#ff5c95;border-color:#ff5c95;color:var(--bg)}
.play.on{background:var(--cyan);border-color:var(--cyan)}
.play.on:hover{background:#5ce6ff;border-color:#5ce6ff}
.btn.loop{flex:0 0 auto;font-size:15px;padding:12px 26px}
.btn.loop.on{background:var(--cyan);color:var(--bg);border-color:var(--cyan)}
.btn.loop.on:hover{background:#5ce6ff;border-color:#5ce6ff;color:var(--bg)}
.ctrl{display:flex;flex-direction:column;gap:6px;min-width:122px;flex:0 0 auto}
.ctrl label{font-family:var(--mono);font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted);display:flex;justify-content:space-between;white-space:nowrap}
.ctrl label b{color:var(--text);font-weight:700}
input[type=range]{-webkit-appearance:none;appearance:none;height:4px;background:var(--line-2);border:none;border-radius:2px;outline:none}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;background:var(--hot);border:none;border-radius:50%;cursor:pointer;transition:background .12s}
input[type=range]::-webkit-slider-thumb:hover{background:#ff5c95}
input[type=range]::-moz-range-thumb{width:14px;height:14px;background:var(--hot);border:none;border-radius:50%;cursor:pointer}
.seg{display:flex;border:1px solid var(--line-2);border-radius:3px;overflow:hidden}
.seg button{font-family:var(--sans);font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.1em;border:none;border-right:1px solid var(--line);background:transparent;padding:9px 12px;cursor:pointer;color:var(--muted);transition:color .12s,background .12s}
.seg button:last-child{border-right:none}
.seg button:hover{color:var(--text)}
.seg button.on{background:var(--cyan);color:var(--bg)}
.toggle{display:flex;align-items:center;gap:8px;cursor:pointer;font-family:var(--mono);font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;white-space:nowrap;flex:0 0 auto;color:var(--muted)}
.toggle .box{width:20px;height:20px;border:1px solid var(--line-2);border-radius:3px;background:var(--panel-2);display:flex;align-items:center;justify-content:center}
.toggle.on{color:var(--text)}
.toggle.on .box{background:var(--hot);border-color:var(--hot)}
.toggle.on .box::after{content:"";width:12px;height:12px;background-color:var(--bg);-webkit-mask:var(--icon-x) no-repeat center/contain;mask:var(--icon-x) no-repeat center/contain}

/* footer */
footer.app{display:flex;align-items:center;justify-content:flex-start;padding:9px 18px;border-top:1px solid var(--line-2);background:var(--bg-deep);font-family:var(--sans);font-size:11px;text-transform:uppercase;letter-spacing:.22em;color:var(--muted)}
footer a,footer .license-link{cursor:pointer;color:var(--muted);text-decoration:none;transition:color .12s}
footer a:hover,footer .license-link:hover{color:var(--hot)}
footer .fcol-sep{margin:0 .45em;color:var(--dim)}
.license-body{font-family:var(--mono);font-size:11px;line-height:1.55;color:var(--muted);white-space:pre-wrap;margin:0;text-transform:none;letter-spacing:0}
.license-body .lic-link{color:var(--cyan);text-decoration:underline;text-underline-offset:2px}
.license-body .lic-link:hover{color:#5ce6ff}

/* edit modal */
.overlay{position:fixed;inset:0;background:rgba(3,5,8,.72);display:none;align-items:flex-start;justify-content:center;
  padding:20px 14px;z-index:60;overflow-y:auto;-webkit-overflow-scrolling:touch;backdrop-filter:blur(2px)}
.overlay.open{display:flex}
.modal{background:var(--panel);border:1px solid var(--line-2);border-radius:4px;box-shadow:0 24px 80px rgba(0,0,0,.6);width:100%;max-width:520px;padding:18px;margin:auto}
.modal .mhead{display:flex;align-items:center;gap:12px;margin-bottom:6px}
.modal .mhead .name{font-family:"Heebo",var(--sans);font-size:34px;font-weight:900;letter-spacing:-.01em;line-height:1}
.modal .mhead .mtitle{font-family:var(--sans);font-size:13px;font-weight:600;text-transform:uppercase;letter-spacing:.28em;line-height:1;color:var(--cyan)}
.modal .close{margin-left:auto;width:32px;height:32px;border-radius:3px;border:1px solid var(--line-2);background:transparent;color:var(--muted);font-size:17px;font-weight:700;cursor:pointer;line-height:1;transition:color .12s,border-color .12s}
.modal .close:hover{color:var(--danger);border-color:var(--danger)}
.modal .mnotes{font-family:var(--mono);font-size:12px;color:var(--muted);margin-bottom:16px;letter-spacing:.03em}
.modal .mrow{margin-bottom:16px}
.modal .mrow .sub{font-family:var(--mono);font-size:10px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);display:block;margin-bottom:8px}
.modal .pos{font-family:var(--mono);font-size:11px;color:var(--muted);text-align:center;margin:4px 0 10px}
.modal .mactions{display:flex;flex-wrap:wrap;gap:8px;align-items:center;border-top:1px solid var(--line-2);padding-top:16px;margin-top:4px}
.modal .mactions .spacer{flex:1}
.vsliders{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;margin-top:4px}
.vsliders .ctrl{min-width:0;width:auto}
.vsliders input[type=range]{width:100%}
/* license modal: cyan-accented, viewport-fit; title + app-name context + header
   close, body scrolls (matches the tracker copyright-notice layout) */
#licenseModal{align-items:center}
#licenseModal .modal{display:flex;flex-direction:column;padding:12px;max-height:calc(100dvh - 40px);border-radius:8px;border-color:var(--cyan);box-shadow:0 0 0 1px rgba(0,212,255,.18),0 24px 80px rgba(0,0,0,.6)}
#licenseModal .lic-head{flex:0 0 auto;display:flex;align-items:flex-start;justify-content:space-between;gap:8px;padding-bottom:10px;margin-bottom:14px;border-bottom:1px solid var(--line)}
#licenseModal .lic-head-main{min-width:0;display:grid;gap:4px}
#licenseModal .lic-title{font-family:var(--sans);font-size:18px;font-weight:800;line-height:normal;text-transform:uppercase;letter-spacing:.2em;color:var(--text)}
#licenseModal .lic-context{font-family:var(--sans);font-size:10px;font-weight:400;letter-spacing:.22em;text-transform:uppercase;color:var(--muted)}
#licenseModal .lic-x{flex:0 0 auto;cursor:pointer;color:var(--text);background:var(--bg-deep);border:1px solid var(--line-2);border-radius:3px;font-size:14px;line-height:1;padding:5px 9px;transition:color .12s,border-color .12s,background .12s}
#licenseModal .lic-x:hover{color:var(--bg);background:var(--cyan);border-color:var(--cyan)}
#licenseModal .license-body{flex:1 1 auto;min-height:0;overflow-y:auto;scrollbar-width:thin;scrollbar-color:var(--cyan) var(--bg-deep)}
#licenseModal .license-body::-webkit-scrollbar{width:10px}
#licenseModal .license-body::-webkit-scrollbar-track{background:var(--bg-deep);border-radius:5px}
#licenseModal .license-body::-webkit-scrollbar-thumb{background:var(--cyan);border-radius:5px;border:2px solid var(--bg-deep)}
#licenseModal .license-body::-webkit-scrollbar-thumb:hover{background:#5ce6ff}
@media(max-width:560px){
  .brand h1{font-size:16px;letter-spacing:.1em}
  .scope-wrap{height:40px}
  .readout .actions{margin-left:0;width:100%}
  .modal .mhead .name{font-size:28px}
}
/* Phone: two centered rows — site link on top, copyright + rights together on
   the line below. Tighter tracking keeps the copyright on one line. Matches the
   Glitch Image Editor and Music Tracker footers. */
@media(max-width:600px){
  footer.app{display:flex;flex-wrap:wrap;justify-content:center;align-items:baseline;
    column-gap:7px;row-gap:3px;padding:10px 12px;font-size:10px;letter-spacing:.08em;text-align:center}
  footer.app .fcol-site{flex:0 0 100%;order:0;white-space:nowrap}
  footer.app .fcol-copy{order:2}
  footer.app .fcol-license{order:4}
  footer.app .fcol-sep{display:none}
  footer.app .fcol-sep ~ .fcol-sep{display:inline;order:3}
}
/* Phone: chord cards become a vertical stack of compact rows (like a step
   sequencer). Reorder with the up/down chevrons — no drag, so the page scrolls
   normally. */
@media(max-width:600px){
  .strip{flex-direction:column;flex-wrap:nowrap;gap:8px;min-height:0;padding:8px 0 12px}
  .card{width:auto;display:flex;flex-direction:row;align-items:center;text-align:left;gap:11px;padding:9px 11px;touch-action:auto}
  .card .rn{min-height:0;flex:0 0 auto;min-width:24px}
  .card .cn{font-size:18px;margin:0;flex:0 0 auto}
  .card .cnotes{min-height:0;flex:1 1 auto;text-align:left;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin:0}
  .card .cbeats{margin-top:0;flex:0 0 auto;white-space:nowrap}
  .card .pill-row{flex-direction:row;margin-top:0;gap:6px;flex:0 0 auto}
  .card .arp,.card .pp{padding:6px 9px}
  .card-move{display:flex;flex-direction:column;gap:3px;flex:0 0 auto;order:-1}
  .empty{height:64px}
}