:root{
  --bg:#090b0f; --surface:#11151b; --raised:#171d26; --raised2:#1e2631;
  --hair:rgba(255,255,255,.07); --hair2:rgba(255,255,255,.12);
  --txt:#e8edf4; --dim:#96a3b4; --faint:#6b7788;
  --accent:#34d399; --accent-ink:#04231a; --blue:#5b9dff; --red:#f2555a;
  --r-lg:14px; --r:10px; --r-sm:8px;
  --ease:cubic-bezier(.2,.7,.3,1);
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
  --mono:ui-monospace,SFMono-Regular,Menlo,monospace;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--txt);font:400 13px/1.5 var(--sans);
  overflow:hidden;-webkit-font-smoothing:antialiased}
button,input,select,textarea{font:inherit;color:inherit}
::-webkit-scrollbar{width:9px;height:9px}
::-webkit-scrollbar-thumb{background:#232c38;border-radius:9px;border:2px solid transparent;background-clip:padding-box}
::-webkit-scrollbar-thumb:hover{background:#2f3b4a;background-clip:padding-box}
::-webkit-scrollbar-track{background:transparent}

/* ---------- primitives ---------- */
.btn{display:inline-flex;align-items:center;gap:6px;background:transparent;border:1px solid transparent;
  border-radius:var(--r-sm);padding:6px 10px;cursor:pointer;color:var(--dim);transition:all .13s var(--ease);
  white-space:nowrap;font-weight:500}
.btn:hover{background:var(--raised2);color:var(--txt)}
.btn:active{transform:translateY(.5px)}
.btn.line{border-color:var(--hair);color:var(--txt)}
.btn.line:hover{border-color:var(--hair2)}
.btn.primary{background:var(--accent);color:var(--accent-ink);font-weight:650}
.btn.primary:hover{background:#4ee0aa}
.btn.danger:hover{background:rgba(242,85,90,.12);color:#ff8b8f}
.btn.on{background:var(--raised2);color:var(--txt)}
.btn:disabled{opacity:.35;pointer-events:none}
.btn.icon{padding:6px 8px;min-width:32px;justify-content:center}
.seg{display:inline-flex;background:var(--raised);border-radius:var(--r-sm);padding:2px;gap:2px}
.seg button{background:transparent;border:0;border-radius:6px;padding:5px 10px;cursor:pointer;color:var(--faint);
  font-size:12px;font-weight:550;transition:all .13s var(--ease)}
.seg button:hover{color:var(--txt)}
.seg button.on{background:var(--raised2);color:var(--txt);box-shadow:0 1px 2px rgba(0,0,0,.35)}
input[type=text],textarea,select{width:100%;background:var(--raised);border:1px solid transparent;border-radius:var(--r-sm);
  padding:8px 10px;transition:border-color .13s var(--ease),background .13s var(--ease)}
input[type=text]:focus,textarea:focus,select:focus{outline:0;border-color:var(--hair2);background:var(--raised2)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
input:focus-visible,select:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:1px}
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
input[type=text]::placeholder,textarea::placeholder{color:var(--faint)}
textarea{resize:vertical;min-height:70px;line-height:1.5}
select{appearance:none;cursor:pointer;background-image:linear-gradient(45deg,transparent 50%,var(--faint) 50%),linear-gradient(135deg,var(--faint) 50%,transparent 50%);
  background-position:calc(100% - 15px) 15px,calc(100% - 10px) 15px;background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:28px}
input[type=range]{-webkit-appearance:none;width:100%;height:20px;background:transparent;cursor:pointer}
input[type=range]::-webkit-slider-runnable-track{height:4px;border-radius:4px;background:var(--raised2)}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:14px;height:14px;border-radius:50%;background:var(--txt);
  margin-top:-5px;box-shadow:0 1px 4px rgba(0,0,0,.5);transition:transform .13s var(--ease)}
input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.15)}
.lbl{display:block;font-size:10.5px;text-transform:uppercase;letter-spacing:.09em;color:var(--faint);font-weight:650;margin-bottom:6px}
.lbl span{text-transform:none;letter-spacing:0;font-weight:500}
.hint{font-size:12px;color:var(--dim);line-height:1.55}
kbd{background:var(--raised2);border-radius:4px;padding:1px 5px;font:500 11px var(--mono);color:var(--dim)}

/* ---------- shell ---------- */
.app{display:flex;flex-direction:column;height:100vh}
.top{display:flex;align-items:center;gap:10px;padding:0 12px;height:52px;flex:0 0 auto;
  background:var(--surface);border-bottom:1px solid var(--hair);position:relative;z-index:30}
.brand{display:flex;align-items:center;gap:8px;font-weight:650;letter-spacing:-.01em;padding-right:4px}
.brand i{font-style:normal;font-size:16px}
.brand b{font-weight:650}
.brand span{color:var(--faint);font-weight:500}
#title{background:transparent;border:1px solid transparent;font-weight:600;width:260px;padding:7px 10px}
#title:hover{background:var(--raised)}
.grow{flex:1}
.pop{position:absolute;top:50px;background:var(--raised);border:1px solid var(--hair);border-radius:var(--r-lg);
  box-shadow:0 20px 50px rgba(0,0,0,.6);padding:6px;min-width:230px;z-index:40}
.pop[hidden]{display:none}
.pop .ph{font-size:10.5px;text-transform:uppercase;letter-spacing:.09em;color:var(--faint);font-weight:650;padding:8px 10px 4px}
.pop .it{display:flex;align-items:center;gap:8px;padding:8px 10px;border-radius:var(--r-sm);cursor:pointer;font-size:12.5px}
.pop .it:hover{background:var(--raised2)}
.pop .it .sub{color:var(--faint);font-size:11.5px;margin-left:auto}
.pop .it .del{opacity:0;color:var(--faint);padding:0 3px}
.pop .it:hover .del{opacity:1}
.pop .it .del:hover{color:#ff8b8f}
.pop .sep{height:1px;background:var(--hair);margin:5px 2px}
.pop .sw{display:flex;align-items:center;justify-content:space-between;padding:7px 10px;border-radius:var(--r-sm);cursor:pointer;font-size:12.5px}
.pop .sw:hover{background:var(--raised2)}
.tog{width:32px;height:18px;border-radius:20px;background:#2a3442;position:relative;transition:background .15s var(--ease);flex:0 0 auto}
.tog::after{content:"";position:absolute;top:2px;left:2px;width:14px;height:14px;border-radius:50%;background:#8b98a9;transition:all .15s var(--ease)}
.tog.on{background:rgba(52,211,153,.28)}
.tog.on::after{left:16px;background:var(--accent)}

.main{flex:1;display:flex;min-height:0}
.stage{flex:1;display:flex;flex-direction:column;min-width:0;padding:12px;gap:12px}
.board{flex:1;min-height:0;position:relative;display:flex;align-items:center;justify-content:center}
.host{position:relative;line-height:0}
canvas{border-radius:var(--r-lg);box-shadow:0 18px 50px rgba(0,0,0,.55);touch-action:none;display:block}
.float{position:absolute;display:flex;align-items:center;gap:2px;padding:4px;border-radius:999px;
  background:rgba(12,15,20,.72);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border:1px solid var(--hair);box-shadow:0 8px 24px rgba(0,0,0,.35);z-index:5}
.float.tl{top:12px;left:12px}
.float.tr{top:12px;right:12px}
.float .btn{border-radius:999px;font-size:12px;padding:5px 11px}
.float .seg{background:transparent;padding:0}
.float .seg button{padding:5px 10px}
.pdot{width:9px;height:9px;border-radius:50%;flex:0 0 auto}
.pdot.sq{border-radius:2px}
#hint{position:absolute;left:50%;top:62px;transform:translateX(-50%) translateY(-4px);background:rgba(12,15,20,.85);
  backdrop-filter:blur(10px);border:1px solid var(--hair);padding:7px 14px;border-radius:999px;font-size:12px;
  color:var(--txt);pointer-events:none;opacity:0;transition:all .18s var(--ease);z-index:6;white-space:nowrap}
#hint.on{opacity:1;transform:translateX(-50%) translateY(0)}
.step .du b{color:var(--accent);font-weight:650;letter-spacing:.04em}

/* ---------- transport ---------- */
.dock{flex:0 0 auto;background:var(--surface);border:1px solid var(--hair);border-radius:var(--r-lg);padding:10px 12px}
.transport{display:flex;align-items:center;gap:10px}
#scrubWrap{flex:1;position:relative;height:20px;display:flex;align-items:center}
#scrub{position:relative;z-index:2}
#ticks{position:absolute;left:0;right:0;top:8px;height:4px;pointer-events:none}
#ticks i{position:absolute;top:0;width:2px;height:4px;background:#3a4655;border-radius:2px;transform:translateX(-1px)}
#clock{font:500 12px var(--mono);color:var(--faint);min-width:82px;text-align:right;font-variant-numeric:tabular-nums}
.track{display:flex;gap:6px;overflow-x:auto;margin-top:10px;padding-bottom:2px;scrollbar-width:thin}
.step{flex:0 0 auto;display:flex;align-items:center;gap:9px;background:var(--raised);border:1px solid transparent;
  border-radius:var(--r);padding:7px 11px 7px 9px;cursor:pointer;transition:all .13s var(--ease);position:relative}
.step:hover{background:var(--raised2)}
.step.on{background:var(--raised2);border-color:rgba(52,211,153,.5)}
.step .num{width:20px;height:20px;border-radius:6px;background:#242e3b;color:var(--faint);display:grid;place-items:center;
  font:650 11px var(--mono);flex:0 0 auto}
.step.on .num{background:rgba(52,211,153,.16);color:var(--accent)}
.step .meta{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.step .nm{font-size:12.5px;font-weight:550;max-width:150px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.step .du{font:500 10.5px var(--mono);color:var(--faint)}
.step .kill{width:18px;height:18px;border-radius:5px;display:none;place-items:center;color:var(--faint);font-size:12px;margin-left:2px}
.step.on .kill{display:grid}
.step .kill:hover{background:rgba(242,85,90,.16);color:#ff8b8f}
.step.plus{padding:7px 12px;color:var(--faint);font-size:15px;align-self:stretch}

/* ---------- sidebar ---------- */
.side{width:322px;flex:0 0 322px;background:var(--surface);border-left:1px solid var(--hair);display:flex;flex-direction:column;min-height:0}
.tabs{display:flex;gap:2px;padding:10px 12px 0}
.tabs button{flex:1;background:transparent;border:0;border-radius:var(--r-sm);padding:7px;cursor:pointer;color:var(--faint);
  font-size:12.5px;font-weight:550;transition:all .13s var(--ease)}
.tabs button:hover{color:var(--txt)}
.tabs button.on{background:var(--raised);color:var(--txt)}
.pane{flex:1;overflow-y:auto;padding:14px 14px 20px;display:flex;flex-direction:column;gap:16px}
.pane[hidden]{display:none}
.fld{display:flex;flex-direction:column}
.divider{height:1px;background:var(--hair)}
.muted{opacity:.45}
.warn{color:#ffc98a}
.rowb{display:flex;gap:8px;align-items:center}
.chips{display:flex;gap:6px;flex-wrap:wrap}
.sw2{width:24px;height:24px;border-radius:7px;cursor:pointer;border:2px solid transparent;transition:transform .12s var(--ease)}
.sw2:hover{transform:scale(1.08)}
.sw2.on{border-color:var(--txt)}
.roster{display:flex;flex-direction:column;gap:2px}
.pl{display:flex;align-items:center;gap:9px;padding:7px 8px;border-radius:var(--r-sm);cursor:pointer;transition:background .12s var(--ease)}
.pl:hover{background:var(--raised)}
.pl.on{background:var(--raised2)}
.pl .mk{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font:650 10.5px var(--sans);color:#fff;flex:0 0 auto;text-shadow:0 1px 2px rgba(0,0,0,.4)}
.pl .mk.sq{border-radius:6px}
.pl .nm{flex:1;font-size:12.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.pl .nm em{font-style:normal;color:var(--faint)}
.pl .x{opacity:0;color:var(--faint);padding:0 4px;border-radius:4px}
.pl:hover .x{opacity:1}
.pl .x:hover{color:#ff8b8f}
.scr{display:flex;flex-direction:column;gap:3px}
.ln{display:flex;gap:10px;padding:9px 10px;border-radius:var(--r-sm);cursor:pointer;transition:background .12s var(--ease);border-left:2px solid transparent}
.ln:hover{background:var(--raised)}
.ln.on{background:var(--raised);border-left-color:var(--accent)}
.ln b{font:650 11px var(--mono);color:var(--faint);flex:0 0 auto;padding-top:1px}
.ln.on b{color:var(--accent)}
.ln .t{font-size:12.5px;font-weight:550}
.ln .t i{display:block;font-style:normal;font-weight:400;color:var(--dim);font-size:12px;margin-top:2px;line-height:1.45}
.empty{text-align:center;color:var(--faint);font-size:12.5px;padding:26px 10px;line-height:1.6}

/* ---------- toast ---------- */
#toast{position:fixed;right:22px;bottom:22px;transform:translateY(10px);display:flex;align-items:center;gap:12px;
  background:var(--raised);border:1px solid var(--hair2);border-radius:999px;padding:9px 10px 9px 16px;
  box-shadow:0 16px 40px rgba(0,0,0,.6);opacity:0;pointer-events:none;transition:all .2s var(--ease);z-index:80;font-size:12.5px}
#toast.on{opacity:1;transform:translateY(0);pointer-events:auto}
#toast button{background:var(--raised2);border:0;border-radius:999px;padding:5px 12px;cursor:pointer;font-weight:600;font-size:12px}
#toast button:hover{background:#2b3644}

@media (max-width:1000px){
  .main{flex-direction:column;overflow-y:auto}
  .side{width:auto;flex:0 0 auto;border-left:0;border-top:1px solid var(--hair);max-height:none}
  .stage{flex:0 0 auto}
  .board{min-height:46vh}
  .pane{max-height:52vh}
  #title{width:150px}
}

/* respect the system motion preference */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{transition-duration:.01ms!important;animation-duration:.01ms!important}
}
/* notch / home-indicator safety on phones and tablets */
@supports(padding:max(0px)){
  .top{padding-left:max(12px,env(safe-area-inset-left));padding-right:max(12px,env(safe-area-inset-right))}
  .stage{padding-bottom:max(12px,env(safe-area-inset-bottom))}
}
/* tablets and phones: lift the floating controls off the pitch so nothing overlaps */
@media (max-width:760px){
  .board{min-height:0}
  .host{display:flex;flex-direction:column;gap:8px;line-height:normal;width:100%;align-items:center}
  .float{position:static;flex-wrap:wrap;justify-content:center;width:100%;
    background:var(--surface);border-color:var(--hair);backdrop-filter:none;-webkit-backdrop-filter:none;
    box-shadow:none;border-radius:var(--r)}
  .float.tl{order:-1}
  .float.tr{order:1}
  #hint{top:auto;bottom:12px}
}
/* phones: trim the header so nothing spills off the side */
@media (max-width:640px){
  .top{gap:6px;height:48px}
  .brand b,.brand span{display:none}
  .brand{padding-right:0}
  #title{width:auto;flex:1;min-width:0}
  .grow{display:none}
  .btn{padding:6px 8px}
  .float .btn{padding:5px 9px;font-size:11.5px}
  .transport{flex-wrap:wrap;gap:6px}
  #scrubWrap{order:5;flex:1 0 100%}
  .pane{padding:12px 12px 24px}
  .tabs{padding:8px 10px 0}
}