/* ─────────────────────────  tokens  ───────────────────────── */
:root{
  --ink:#100E0D;
  --panel:#191615;
  --panel-2:#211D1B;
  --rule:#2E2926;
  --text:#EFEAE4;
  --muted:#948B85;
  --faint:#6A625D;

  --hat:#8B6BF5;   /* Hawaii–Aleutian */
  --akt:#5AC8E8;   /* Alaska          */
  --pt:#3ED9A4;    /* Pacific         */
  --mt:#F5C24B;    /* Mountain        */
  --ct:#FF8A3D;    /* Central         */
  --et:#FF5A36;    /* Eastern         */

  --tile:clamp(54px,7.4vw,78px);
  --gap:4px;
  --step:clamp(11px,3.4vw,58px);

  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
  --disp:"Space Grotesk",system-ui,-apple-system,Segoe UI,sans-serif;
}

*{box-sizing:border-box}
html,body{margin:0}
body{
  background:var(--ink);
  color:var(--text);
  font-family:var(--disp);
  -webkit-font-smoothing:antialiased;
  padding-bottom:180px;
}
body::before{
  content:"";position:fixed;inset:0;pointer-events:none;z-index:0;
  background:
    radial-gradient(120% 70% at 8% -10%, rgba(90,200,232,.10), transparent 60%),
    radial-gradient(110% 70% at 96% -6%, rgba(255,90,54,.11), transparent 62%);
}
.wrap{position:relative;z-index:1;max-width:1120px;margin:0 auto;padding:0 16px}

/* ─────────────────────────  header  ───────────────────────── */
header{
  position:sticky;top:0;z-index:20;
  background:rgba(16,14,13,.82);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--rule);
}
.bar{display:flex;align-items:center;gap:14px;flex-wrap:wrap;padding:12px 0}
.brand{display:flex;align-items:baseline;gap:9px;margin-right:auto}
.brand h1{
  font-size:clamp(17px,3.4vw,22px);font-weight:700;letter-spacing:-.02em;margin:0;
}
.brand .dot{
  width:9px;height:9px;border-radius:50%;background:var(--et);
  box-shadow:0 0 0 4px rgba(255,90,54,.16);animation:pulse 2s ease-in-out infinite;
  align-self:center
}
@keyframes pulse{50%{box-shadow:0 0 0 9px rgba(255,90,54,0)}}

.utc{font-family:var(--mono);font-size:12px;color:var(--muted);letter-spacing:.06em;white-space:nowrap}
.utc b{color:var(--text);font-weight:500;font-variant-numeric:tabular-nums}

.ctrls{display:flex;gap:6px}
.btn{
  font-family:var(--mono);font-size:11px;letter-spacing:.09em;text-transform:uppercase;
  color:var(--muted);background:var(--panel);border:1px solid var(--rule);
  border-radius:8px;padding:7px 11px;cursor:pointer;transition:.16s;
}
.btn:hover{color:var(--text);border-color:#453D38}
.btn[aria-pressed="true"]{color:var(--ink);background:var(--text);border-color:var(--text);font-weight:700}
.btn:focus-visible,.tile:focus-visible,.step:focus-visible,.row:focus-visible,input:focus-visible{
  outline:2px solid var(--akt);outline-offset:2px
}

/* ─────────────────────  hero: the staircase  ───────────────────── */
.hero{padding:30px 0 12px}
.eyebrow{
  font-family:var(--mono);font-size:10.5px;letter-spacing:.22em;text-transform:uppercase;
  color:var(--faint);margin:0 0 8px
}
.lede{
  font-size:clamp(15px,2.5vw,17px);line-height:1.5;color:var(--muted);
  max-width:46ch;margin:0 0 26px
}
.lede b{color:var(--text);font-weight:500}

.stairs{display:flex;flex-direction:column;gap:5px;margin-bottom:6px}
.step{
  display:flex;align-items:center;gap:clamp(8px,2vw,16px);
  width:max-content;max-width:calc(100% - (var(--i) * var(--step)));
  background:var(--panel);border:1px solid var(--rule);border-left:3px solid var(--z);
  border-radius:3px 10px 10px 3px;--i:0;
  padding:9px clamp(10px,2vw,16px) 9px clamp(9px,1.8vw,14px);
  margin-left:calc(var(--i) * var(--step));
  cursor:pointer;text-align:left;color:inherit;font:inherit;
  transition:transform .18s cubic-bezier(.2,.8,.2,1),background .18s,border-color .18s;
  position:relative;
}
.step:hover{transform:translateX(4px);background:var(--panel-2)}
.step.on{background:var(--panel-2);border-color:var(--z)}
.step::before{ /* riser connecting to the step above */
  content:"";position:absolute;left:-1px;top:-6px;height:6px;width:1px;background:var(--rule)
}
.stairs .step:first-child::before{display:none}

.step .off{
  font-family:var(--mono);font-size:11px;color:var(--faint);letter-spacing:.04em;
  width:6.6ch;flex:none
}
.step .clock{
  font-family:var(--mono);font-weight:700;font-variant-numeric:tabular-nums;
  font-size:clamp(19px,4.2vw,27px);letter-spacing:-.02em;line-height:1;
  color:var(--z);flex:none
}
.step .clock i{font-size:.5em;font-style:normal;margin-left:2px;opacity:.7}
.step .meta{display:flex;flex-direction:column;gap:2px;min-width:0}
.step .zn{font-size:13px;font-weight:600;letter-spacing:-.01em;white-space:nowrap}
.step .zs{
  font-family:var(--mono);font-size:10px;color:var(--faint);letter-spacing:.1em;
  text-transform:uppercase;white-space:nowrap;overflow:hidden;text-overflow:ellipsis
}
.hint{
  font-family:var(--mono);font-size:10px;color:var(--faint);letter-spacing:.14em;
  text-transform:uppercase;margin:14px 0 0
}

/* ─────────────────────────  toolbar  ───────────────────────── */
.tools{
  display:flex;align-items:center;gap:8px;flex-wrap:wrap;
  padding:26px 0 14px;border-top:1px solid var(--rule);margin-top:26px
}
.tools h2{
  font-size:13px;font-weight:600;margin:0 auto 0 0;letter-spacing:-.01em
}
.tools h2 span{font-family:var(--mono);font-size:10.5px;color:var(--faint);letter-spacing:.1em;margin-left:8px;text-transform:uppercase}
.seg{display:flex;background:var(--panel);border:1px solid var(--rule);border-radius:9px;padding:2px}
.seg .btn{border:0;background:none;border-radius:7px;padding:6px 12px}
.seg .btn[aria-pressed="true"]{background:var(--text)}
.search{
  font-family:var(--mono);font-size:12px;color:var(--text);
  background:var(--panel);border:1px solid var(--rule);border-radius:9px;
  padding:8px 11px;width:150px;
}
.search::placeholder{color:var(--faint);letter-spacing:.06em}

/* ─────────────────────────  map  ───────────────────────── */
.mapscroll{overflow-x:auto;overflow-y:hidden;padding:2px 0 8px;-webkit-overflow-scrolling:touch}
.mapscroll::-webkit-scrollbar{height:5px}
.mapscroll::-webkit-scrollbar-thumb{background:var(--rule);border-radius:9px}
.map{
  display:grid;grid-template-columns:repeat(11,var(--tile));
  grid-auto-rows:var(--tile);gap:var(--gap);width:max-content;margin:0 auto
}
.tile{
  position:relative;overflow:hidden;border:0;cursor:pointer;
  border-radius:7px;padding:0;color:#1A1210;font:inherit;
  background:var(--c);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1px;
  transition:transform .16s cubic-bezier(.2,.8,.2,1),box-shadow .16s,opacity .2s,filter .5s;
  animation:pop .38s cubic-bezier(.2,.9,.2,1) both;animation-delay:var(--d,0ms);
}
@keyframes pop{from{opacity:0;transform:scale(.82)}}
.tile.split{background:linear-gradient(116deg,var(--c2) 0 34%,var(--c) 34%)}
.tile:hover{transform:translateY(-3px) scale(1.05);box-shadow:0 8px 22px rgba(0,0,0,.5);z-index:3}
.tile.sel{box-shadow:0 0 0 2px var(--text),0 10px 26px rgba(0,0,0,.6);z-index:4;transform:translateY(-3px) scale(1.05)}
.tile.dim{opacity:.16;filter:grayscale(.7)}
.tile .ab{
  font-family:var(--mono);font-weight:700;font-size:clamp(11px,1.5vw,14px);
  letter-spacing:.02em;line-height:1
}
.tile .tm{
  font-family:var(--mono);font-weight:500;font-size:clamp(9.5px,1.25vw,12px);
  font-variant-numeric:tabular-nums;line-height:1;opacity:.82
}
.tile .tm i{font-style:normal;font-size:.75em;opacity:.75}
.tile .dl{
  position:absolute;top:3px;right:4px;font-family:var(--mono);font-size:8.5px;
  font-weight:700;line-height:1;padding:1.5px 3px;border-radius:3px;
  background:rgba(20,14,12,.34)
}
.tile .nb{position:absolute;bottom:3px;right:4px;font-size:9px;line-height:1;opacity:.55}
/* daylight tint */
.tile .veil{
  position:absolute;inset:0;pointer-events:none;opacity:0;transition:opacity .6s ease;
  background:linear-gradient(180deg,rgba(6,10,26,.30),rgba(4,6,20,.66))
}
body.tint .tile.dusk .veil{opacity:.55}
body.tint .tile.night .veil{opacity:1}
body.tint .tile.night{color:#E4E9F5}
body.tint .tile.night .ab{text-shadow:0 1px 6px rgba(0,0,0,.5)}
.tile .moon{
  position:absolute;top:3px;left:4px;font-size:9px;line-height:1;opacity:0;transition:opacity .5s
}
body.tint .tile.night .moon{opacity:.75}

/* ─────────────────────────  list  ───────────────────────── */
.list{display:flex;flex-direction:column;gap:3px;padding:2px 0 8px}
.row{
  display:grid;grid-template-columns:5px auto 1fr auto;align-items:center;gap:11px;
  background:var(--panel);border:1px solid var(--rule);border-radius:8px;
  padding:9px 12px 9px 0;cursor:pointer;color:inherit;font:inherit;text-align:left;
  transition:.14s;overflow:hidden
}
.row:hover{background:var(--panel-2);border-color:#443C37}
.row.sel{border-color:var(--text)}
.row .swatch{align-self:stretch;background:var(--c);border-radius:8px 0 0 8px}
.row.split .swatch{background:linear-gradient(160deg,var(--c) 0 52%,var(--c2) 52%)}
.row .ab{font-family:var(--mono);font-size:11px;font-weight:700;color:var(--muted);padding-left:12px}
.row .nm{font-size:14px;font-weight:500;letter-spacing:-.01em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row .nm em{
  font-family:var(--mono);font-style:normal;font-size:10px;color:var(--faint);
  letter-spacing:.09em;text-transform:uppercase;margin-left:9px
}
.row .rt{
  font-family:var(--mono);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;
  color:var(--c);white-space:nowrap
}
.row .rt i{font-style:normal;font-size:.66em;opacity:.7;margin-left:2px}
.row .rt s{text-decoration:none;font-size:.66em;font-weight:500;color:var(--faint);margin-left:7px}
.empty{
  font-family:var(--mono);font-size:12px;color:var(--faint);letter-spacing:.06em;
  padding:34px 0;text-align:center
}

/* ─────────────────────  territories + footer  ───────────────────── */
.terr{padding:22px 0 8px;border-top:1px solid var(--rule);margin-top:22px}
.terr .lbl{font-family:var(--mono);font-size:10px;letter-spacing:.2em;text-transform:uppercase;color:var(--faint);margin:0 0 12px}
.chips{display:flex;gap:7px;flex-wrap:wrap}
.chip{
  display:flex;align-items:center;gap:9px;background:var(--panel);
  border:1px solid var(--rule);border-left:3px solid var(--c);border-radius:3px 9px 9px 3px;
  padding:8px 12px 8px 10px;cursor:pointer;color:inherit;font:inherit;transition:.14s
}
.chip:hover{background:var(--panel-2)}
.chip .cn{font-size:12.5px;font-weight:500}
.chip .cn small{display:block;font-family:var(--mono);font-size:9.5px;color:var(--faint);letter-spacing:.1em;text-transform:uppercase;margin-top:2px}
.chip .ct2{font-family:var(--mono);font-size:14px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--c)}
.chip .ct2 i{font-style:normal;font-size:.66em;opacity:.7}

footer{border-top:1px solid var(--rule);margin-top:26px;padding:22px 0 8px}
.keys{display:flex;gap:18px;flex-wrap:wrap;margin:0 0 16px}
.key{display:flex;align-items:center;gap:8px;font-family:var(--mono);font-size:10.5px;color:var(--muted);letter-spacing:.05em}
.key .kw{width:20px;height:20px;border-radius:5px;flex:none}
.k1{background:linear-gradient(116deg,var(--ct) 0 34%,var(--et) 34%)}
.k2{background:var(--mt);display:grid;place-items:center;font-size:10px;color:#1A1210}
.k3{background:var(--pt);position:relative;overflow:hidden}
.k3::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(6,10,26,.3),rgba(4,6,20,.66))}
footer p{font-size:13px;line-height:1.6;color:var(--faint);max-width:62ch;margin:0}

/* ─────────────────────────  detail sheet  ───────────────────────── */
.sheet{
  position:fixed;left:0;right:0;bottom:0;z-index:30;
  background:var(--panel);border-top:1px solid var(--rule);
  transform:translateY(105%);visibility:hidden;pointer-events:none;
  transition:transform .3s cubic-bezier(.2,.85,.2,1),visibility 0s .3s;
  box-shadow:0 -18px 50px rgba(0,0,0,.55)
}
.sheet.open{transform:translateY(0);visibility:visible;pointer-events:auto;transition-delay:0s,0s}
.sheet .in{max-width:1120px;margin:0 auto;padding:16px 16px 20px;position:relative}
.sheet .x{
  position:absolute;top:12px;right:12px;width:30px;height:30px;border-radius:8px;
  background:var(--panel-2);border:1px solid var(--rule);color:var(--muted);
  cursor:pointer;font-size:15px;line-height:1;display:grid;place-items:center
}
.sheet .x:hover{color:var(--text)}
.sheet h3{font-size:clamp(19px,4vw,26px);font-weight:700;letter-spacing:-.025em;margin:0 0 3px;padding-right:40px}
.sheet .sub{font-family:var(--mono);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--faint);margin:0 0 15px}
.zgrid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:8px;margin-bottom:14px}
.zcard{background:var(--panel-2);border:1px solid var(--rule);border-left:3px solid var(--c);border-radius:3px 10px 10px 3px;padding:11px 13px}
.zcard .zt{font-family:var(--mono);font-size:clamp(22px,5vw,30px);font-weight:700;font-variant-numeric:tabular-nums;line-height:1;color:var(--c)}
.zcard .zt i{font-style:normal;font-size:.46em;opacity:.7;margin-left:3px}
.zcard .zl{font-size:12.5px;font-weight:600;margin-top:7px}
.zcard .zd{font-family:var(--mono);font-size:10px;color:var(--faint);letter-spacing:.08em;text-transform:uppercase;margin-top:3px}
.zcard .zw{font-size:12px;line-height:1.5;color:var(--muted);margin-top:8px;padding-top:8px;border-top:1px solid var(--rule)}
.fact{
  font-size:13px;line-height:1.55;color:var(--muted);
  border-left:2px solid var(--rule);padding:1px 0 1px 12px
}
.fact b{color:var(--text);font-weight:500}

@media (max-width:700px){
  body{padding-bottom:210px}
  .tools h2{width:100%;margin-bottom:2px}
  .search{width:100%;order:9}
  .row{gap:8px}
  .row .nm em{display:block;margin:2px 0 0}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;transition-duration:.001ms!important}
}