/* RailETA v2 — from-zero rebuild.
   Tokens: primitive -> semantic -> component. One accent (signal teal).
   Status colours carry meaning only. No gradients anywhere. */

:root{
  /* primitive */
  --paper0:#f4f2ec; --card0:#ffffff; --ink0:#17202f; --sub0:#4d5a70;
  --line0:#e3ded1; --teal0:#0f766e; --teal-ink0:#ffffff;
  --okbg0:#e9f5ec; --okfg0:#156b3f; --okln0:#bfe0c7;
  --ltbg0:#fdeeee; --ltfg0:#9c222a; --ltln0:#f0bdc1;
  --erbg0:#e9effc; --erfg0:#27478f; --erln0:#c0cfee;
  --wnbg0:#fdf4e0; --wnfg0:#7a5200; --wnln0:#ead3a0;
  /* semantic */
  --paper:var(--paper0); --card:var(--card0); --ink:var(--ink0); --sub:var(--sub0);
  --line:var(--line0); --accent:var(--teal0); --accent-ink:var(--teal-ink0);
  --shadow:0 24px 60px -34px rgba(23,32,47,.30);
  --r-out:28px; --r-in:20px; --r-sm:10px;
  --font:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",sans-serif;
}
[data-theme="dark"]{
  --paper0:#0b1114; --card0:#131c20; --ink0:#e9eef0; --sub0:#93a1ab;
  --line0:#243237; --teal0:#4fd1c5; --teal-ink0:#062a28;
  --okbg0:#0e2a1c; --okfg0:#7fe0a8; --okln0:#1e5c38;
  --ltbg0:#331114; --ltfg0:#ff9d9f; --ltln0:#6e2227;
  --erbg0:#12294f; --erfg0:#9cc2fb; --erln0:#2c4f8f;
  --wnbg0:#33270e; --wnfg0:#f2c879; --wnln0:#6e551f;
  --paper:var(--paper0); --card:var(--card0); --ink:var(--ink0); --sub:var(--sub0);
  --line:var(--line0); --accent:var(--teal0); --accent-ink:var(--teal-ink0);
  --shadow:0 24px 60px -24px rgba(0,0,0,.75);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);font-size:15px;line-height:1.55;padding-bottom:24px}
h1,h2,p,ol{margin:0}
h1{font-size:30px;font-weight:800;letter-spacing:-.025em;line-height:1.12;text-wrap:balance;max-width:18ch}
h2.sec-h{font-size:20px;font-weight:800;letter-spacing:-.015em;text-wrap:balance}
button{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:var(--paper);padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:8px}
.grain{position:fixed;inset:0;pointer-events:none;opacity:.05;z-index:70;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence baseFrequency='.9'/%3E%3C/filter%3E%3Crect width='120' height='120' filter='url(%23n)' opacity='.6'/%3E%3C/svg%3E")}
.dim{color:var(--sub)} .tiny{font-size:12px} .note{font-size:13px;color:var(--sub);max-width:62ch}

/* top bar: detached, not edge-glued */
.bar{max-width:1200px;margin:16px auto 0;padding:10px 16px;display:flex;align-items:center;justify-content:space-between;gap:12px;
  background:var(--card);border-radius:20px;box-shadow:var(--shadow);margin-left:12px;margin-right:12px}
@media(min-width:1224px){.bar{margin-left:auto;margin-right:auto}}
.brand{display:flex;gap:10px;align-items:center;min-width:0}
.mark{width:38px;height:38px;border-radius:12px;background:var(--accent);color:var(--accent-ink);display:flex;align-items:center;justify-content:center;flex:none}
.brand-name{font-weight:800;font-size:16px;letter-spacing:-.01em}
.brand-sub{font-size:11px;color:var(--sub);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bar-right{display:flex;gap:10px;align-items:center}
.theme-lb{font-size:11px;font-weight:700;color:var(--sub)}
.theme-sel{font:inherit;font-size:12px;font-weight:700;color:var(--ink);background:var(--paper);border-radius:10px;padding:7px 8px}
.health{display:flex;gap:7px;align-items:center;font-size:11px;font-weight:700;color:var(--sub);white-space:nowrap}
.dot{width:9px;height:9px;border-radius:50%;background:var(--sub);flex:none}
.dot.ok{background:var(--okfg0)} .dot.bad{background:var(--ltfg0)}

.wrap{max-width:1200px;margin:24px auto 0;padding:0 12px;display:flex;flex-direction:column;gap:24px}

/* double-bezel: outer shell + inner core */
.shell{background:var(--card);border-radius:var(--r-out);padding:6px;box-shadow:var(--shadow)}
.core{background:var(--card);border-radius:var(--r-in);padding:24px;box-shadow:inset 0 1px 0 rgba(255,255,255,.14)}
.eyebrow{font-size:10px;font-weight:700;letter-spacing:.18em;text-transform:uppercase;color:var(--sub);margin-bottom:8px}
.lede{font-size:14px;color:var(--sub);margin-top:8px;max-width:56ch}

/* search overlaps masthead for depth */
.search-shell{position:relative;z-index:2}
.search-core{display:grid;gap:16px}
@media(min-width:900px){.search-core{grid-template-columns:1.1fr 1fr;align-items:end}}
.fld{font-size:12px;font-weight:700;color:var(--sub);display:block;margin-bottom:6px}
.search-form{margin:0}
.search-row{display:flex;gap:8px}
.search-row input{flex:1;min-width:0;padding:14px;font:inherit;font-size:20px;font-weight:800;letter-spacing:.05em;text-align:center;
  color:var(--ink);background:var(--paper);border-radius:14px;border:0;font-variant-numeric:tabular-nums}
#lookupBtn{display:flex;align-items:center;gap:10px;padding:8px 8px 8px 22px;border:0;border-radius:999px;background:var(--accent);
  color:var(--accent-ink);font-weight:800;font-size:15px;cursor:pointer;transition:transform .5s cubic-bezier(.32,.72,0,1),filter .3s}
#lookupBtn:hover{filter:brightness(1.07)}
#lookupBtn:hover .btn-ic{transform:translate(2px,-2px) scale(1.06)}
#lookupBtn:active{transform:scale(.98)}
.btn-ic{width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center;
  transition:transform .5s cubic-bezier(.32,.72,0,1)}
.demo-row{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.demo-lb{font-size:11px;font-weight:700;color:var(--sub)}
.demo{padding:8px 12px;border-radius:var(--r-sm);border:0;background:var(--paper);color:var(--ink);font-size:12px;font-weight:700;cursor:pointer;
  transition:transform .5s cubic-bezier(.32,.72,0,1)}
.demo:hover{transform:translateY(-1px)} .demo:active{transform:scale(.96)}
.sys-line{font-size:12px;color:var(--sub)}

.err{background:var(--ltbg0);color:var(--ink);border-radius:14px;padding:14px 16px;font-size:13px}
.err strong{color:var(--ltfg0)}
.linkbtn{border:0;background:none;color:var(--accent);font-weight:800;cursor:pointer;padding:0 4px;font-size:13px}

/* masthead pulls up under search */
.mast-shell{margin-top:-12px;position:relative;z-index:1}
.mast-top{display:flex;justify-content:space-between;gap:16px;align-items:flex-start;flex-wrap:wrap}
.train-no{font-size:56px;font-weight:800;letter-spacing:-.035em;line-height:1;font-variant-numeric:tabular-nums}
@media(min-width:900px){.train-no{font-size:72px}}
.train-name{font-size:15px;color:var(--sub);margin-top:4px}
.mast-flags{display:flex;gap:8px;flex-wrap:wrap}
.flag{display:inline-block;padding:7px 12px;border-radius:6px;font-size:11px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;
  background:var(--erbg0);color:var(--erfg0)}
.flag.ghost{background:var(--paper);color:var(--sub)}
.flag.ok{background:var(--okbg0);color:var(--okfg0)}
.flag.late{background:var(--ltbg0);color:var(--ltfg0)}
.flag.early{background:var(--erbg0);color:var(--erfg0)}
.route-line{margin-top:20px}
.route-ends{display:flex;justify-content:space-between;font-size:12px;font-weight:800;font-variant-numeric:tabular-nums}
.route-pct{color:var(--accent)}
.route-track{position:relative;height:8px;border-radius:999px;background:var(--paper);margin-top:8px}
.route-fill{position:absolute;inset:0 auto 0 0;width:0;border-radius:999px;background:var(--accent);transition:width .7s cubic-bezier(.32,.72,0,1)}
.route-mark{position:absolute;top:-4px;width:16px;height:16px;border-radius:50%;background:var(--card);border:4px solid var(--accent);transform:translateX(-50%)}
.route-sub{font-size:12px;color:var(--sub);margin-top:8px}
.src-line{font-size:12px;color:var(--sub);margin-top:12px}

/* asymmetric duo: live wide, risk + eta stacked */
.duo{display:grid;grid-template-columns:1fr;gap:24px}
@media(min-width:960px){.duo{grid-template-columns:1.25fr 1fr;align-items:start}}
.stack{display:flex;flex-direction:column;gap:24px}
.ledger{display:flex;flex-direction:column;margin-top:12px}
.leg-row{display:grid;grid-template-columns:96px 1fr;gap:12px;padding:12px 0}
.leg-row + .leg-row{border-top:1px solid var(--line)}
.leg-k{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--sub)}
.leg-v{font-size:15px} .leg-v strong{font-variant-numeric:tabular-nums}

.prob{font-size:52px;font-weight:800;letter-spacing:-.03em;line-height:1;margin-top:8px;font-variant-numeric:tabular-nums}
.prob-u{font-size:13px;font-weight:500;color:var(--sub);letter-spacing:0;margin-left:8px}
.meter{position:relative;height:12px;border-radius:999px;background:var(--paper);margin-top:14px}
.meter-fill{position:absolute;inset:0 auto 0 0;width:0;border-radius:999px;background:var(--accent);transition:width .7s cubic-bezier(.32,.72,0,1)}
.meter-mark{position:absolute;top:-4px;bottom:-4px;width:2px;background:var(--ink);border-radius:2px}
.meter-scale{display:flex;justify-content:space-between;font-size:10px;font-weight:700;color:var(--sub);margin-top:6px;font-variant-numeric:tabular-nums}
.flag-line{margin-top:12px}
.eta-dest{font-size:15px;font-weight:800;margin-top:8px}
.eta-big{font-size:32px;font-weight:800;letter-spacing:-.02em;margin-top:2px;font-variant-numeric:tabular-nums}
.eta-count{font-size:13px;font-weight:700;color:var(--accent);margin-top:2px}
.eta-win{font-size:14px;font-weight:700;margin-top:8px;font-variant-numeric:tabular-nums}
.eta-plan{font-size:12px;color:var(--sub);margin-top:8px;max-width:62ch}
.eta-next{font-size:13px;margin-top:10px;background:var(--paper);border-radius:var(--r-sm);padding:10px 12px}
#etaMeta,#predMeta{margin-top:10px}

/* skeleton: solid pulse, no shimmer gradient */
.sk{border-radius:8px;background:var(--paper);animation:pulse 1.1s ease-in-out infinite}
@keyframes pulse{50%{opacity:.45}}
.sk-line{height:14px;margin:8px 0} .sk-big{height:52px;width:55%}

/* timeline ledger */
.tl-head{display:flex;justify-content:space-between;gap:12px;align-items:flex-start}
.tl{display:flex;flex-direction:column;margin-top:12px}
.tl-day{font-size:11px;font-weight:800;color:var(--sub);text-transform:uppercase;letter-spacing:.08em;margin:16px 0 4px;padding-bottom:6px;border-bottom:1px solid var(--line)}
.tl-stop{display:grid;grid-template-columns:20px 1fr;gap:12px;position:relative;padding:10px 0;content-visibility:auto;contain-intrinsic-size:auto 68px}
.tl-stop::before{content:"";position:absolute;left:9px;top:0;bottom:0;width:2px;background:var(--line)}
.tl-stop:first-child::before{top:18px} .tl-stop:last-child::before{bottom:auto;height:18px}
.tl-dot{width:16px;height:16px;border-radius:50%;background:var(--card);border:2px solid var(--line);margin-top:2px;z-index:1}
.tl-stop.done .tl-dot{background:var(--okfg0);border-color:var(--okfg0)}
.tl-stop.now .tl-dot{background:var(--accent);border-color:var(--accent)}
.tl-name{font-weight:700;font-size:14px}
.tl-code{font-weight:700;color:var(--sub);font-size:11px;margin-left:6px}
.tl-times{display:flex;gap:12px;flex-wrap:wrap;margin-top:2px;font-size:12px;color:var(--sub);font-variant-numeric:tabular-nums}
.tl-times .act{font-weight:800;color:var(--ink)}
.tag{display:inline-block;padding:3px 8px;border-radius:6px;font-size:10px;font-weight:800;margin-left:8px;letter-spacing:.04em;text-transform:uppercase}
.tag.late{background:var(--ltbg0);color:var(--ltfg0)} .tag.late.hot{background:var(--ltfg0);color:#fff}
.tag.early{background:var(--okbg0);color:var(--okfg0)} .tag.on{background:var(--paper);color:var(--sub)}
.tag.here{background:var(--erbg0);color:var(--erfg0)}
.tl-more{font-size:12px;color:var(--sub);text-align:center;padding:10px;border-radius:10px;margin:6px 0 6px 32px;cursor:pointer;background:var(--paper);border:0;font-weight:700;width:calc(100% - 32px)}

/* about split, not centred */
.about{display:grid;grid-template-columns:1fr;gap:24px;padding:8px 8px 0}
@media(min-width:960px){.about{grid-template-columns:1.4fr 1fr}}
.about-list{margin:12px 0 0;padding-left:20px;font-size:14px;display:flex;flex-direction:column;gap:8px;max-width:62ch}
.about-sys{background:var(--card);border-radius:var(--r-in);padding:20px;box-shadow:var(--shadow);align-self:start}
.about-sys .tiny + .tiny{margin-top:8px}

.foot{max-width:1200px;margin:32px auto 0;padding:0 16px;color:var(--sub);font-size:12px;text-align:left}

/* entry motion: transform + opacity only */
@keyframes rise{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
.reveal{opacity:0}
.reveal.in{animation:rise .7s cubic-bezier(.32,.72,0,1) both}
.stack .reveal.in,.duo .reveal.in{animation-delay:.08s}

/* mobile: single search docks to thumb zone */
@media(max-width:640px){
  body{padding-bottom:150px}
  .brand-sub{display:none}
  h1{font-size:25px}
  .core{padding:20px}
  .search-shell{position:fixed;left:10px;right:10px;bottom:10px;z-index:55;padding:4px}
  .search-shell .core{padding:14px}
  .search-tx h1,.search-tx .lede{display:none}
  .wrap{margin-top:16px}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  html{scroll-behavior:auto} .reveal{opacity:1}
}