/* HCG Speed Test v2 — night sky in the My HCG palette (purple band, cream ink, yellow accent) */
:root{
  --bg:#0b0814; --bg-glow:#1d1236; --panel:rgba(255,255,255,.045); --line:#2a2140;
  --ink:#f4f0fb; --muted:#9a90b5; --faint:#4f466a;
  --brand:#5810d6; --brand-hi:#7404f3; --lav:#c4a8ff; --accent:#ffcd57; --on-accent:#1d1630;
  --btn:#1c1530; --bad:#ff8a80;
  --f-ui:system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --f-num:"Barlow Condensed","Roboto Condensed","Arial Narrow",system-ui,sans-serif;
  color-scheme:dark;
}
*{box-sizing:border-box}
html,body{margin:0}
body{
  min-height:100vh;min-height:100dvh;color:var(--ink);font:16px/1.45 var(--f-ui);
  background:var(--bg) radial-gradient(130% 55% at 50% 30%,var(--bg-glow) 0%,rgba(29,18,54,0) 70%) no-repeat;
  -webkit-text-size-adjust:100%;-webkit-tap-highlight-color:transparent;
}
a{color:var(--lav)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* header */
.bar{display:grid;grid-template-columns:44px 1fr 44px;align-items:center;max-width:520px;margin:0 auto;
  padding:calc(env(safe-area-inset-top) + 10px) 16px 0}
.bar h1{margin:0;text-align:center;font-size:17px;font-weight:600;letter-spacing:.01em}
.icon-btn{width:40px;height:40px;border-radius:50%;border:0;background:rgba(255,255,255,.08);color:var(--ink);
  display:grid;place-items:center;cursor:pointer;text-decoration:none}
.icon-btn:hover{background:rgba(255,255,255,.14)}

main{max-width:520px;margin:0 auto;padding:0 16px calc(28px + env(safe-area-inset-bottom))}

/* scene */
.scene{margin:0 -16px}
.scene svg{display:block;width:100%;height:auto;margin-top:6px;overflow:visible}
.star{fill:#fff}
.ridge-far{fill:#21173a}
.ridge-near{fill:#170f2b}
.road path{fill:none;stroke:#fff;stroke-opacity:.16;stroke-width:1}
.road .road-center{stroke-opacity:.14;stroke-dasharray:6 7}
.dc-halo{fill:#9b6bff}
.dc-body{fill:#140d24;stroke:var(--lav);stroke-opacity:.7;stroke-width:.8}
.dc-roof{fill:none;stroke:var(--lav);stroke-opacity:.7;stroke-width:.8}
.dc-led{fill:var(--accent)}
.pole{stroke:#6d6292;stroke-linecap:round}
.splice{fill:#2a2140;stroke:#6d6292}
.splice.lit{fill:var(--accent);stroke:var(--accent)}
.cable-base{fill:none;stroke:#3c3257;stroke-linecap:round}
.cable-glow{fill:none;stroke:#9b6bff;stroke-linecap:round}
.cable-core{fill:none;stroke:#fff;stroke-linecap:round}
.pulse{fill:#fff}
.pulse-glow{fill:var(--accent)}
.home-fill{fill:var(--bg)}
.home-win{fill:var(--accent)}
.home-line{fill:none;stroke:#fff;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}

.brand{text-align:center;font-weight:700;font-size:13px;letter-spacing:.34em;margin:2px 0 0;padding-left:.34em}
.badge-row{height:30px;display:flex;align-items:center;justify-content:center}
.fast{background:var(--accent);color:var(--on-accent);font-weight:800;font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;padding:4px 11px;border-radius:999px;opacity:0;transform:scale(.85);
  transition:opacity .4s,transform .4s cubic-bezier(.3,1.6,.5,1)}
.fast.on{opacity:1;transform:none}

/* results */
.stats{display:grid;grid-template-columns:repeat(3,1fr);text-align:center;margin:0 0 22px}
.num{display:block;font-family:var(--f-num);font-weight:700;font-size:clamp(46px,14vw,62px);line-height:1;
  font-variant-numeric:tabular-nums;letter-spacing:.01em;transition:color .3s}
.stat.pending .num{color:var(--faint)}
.lbl{display:inline-flex;align-items:center;gap:4px;margin-top:6px;font-size:13px;font-weight:600;color:var(--muted);transition:color .3s}
.lbl svg{width:12px;height:12px}
.stat.active .lbl{color:var(--lav)}

/* button */
.go{display:flex;align-items:center;justify-content:center;gap:8px;width:100%;height:52px;border:0;border-radius:12px;
  font:600 16px var(--f-ui);cursor:pointer;transition:background .25s,color .25s}
.go.idle{background:var(--accent);color:var(--on-accent)}
.go.idle:hover{background:#ffd877}
.go.running{background:var(--btn);color:var(--muted);cursor:default}
.go.done{background:var(--btn);color:var(--ink)}
.go.done:hover{background:#261d3f}
.go svg{width:17px;height:17px}
.spin{width:18px;height:18px;border-radius:50%;border:2px solid rgba(255,255,255,.16);border-top-color:#fff;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

.status{min-height:18px;margin:10px 0 20px;text-align:center;font-size:12.5px;color:var(--muted)}
.status.err{color:var(--bad)}

/* advanced */
.adv-btn{display:flex;flex-direction:column;align-items:center;gap:2px;margin:0 auto;background:none;border:0;
  color:var(--muted);font:600 14px var(--f-ui);cursor:pointer;padding:6px 14px}
.adv-btn svg{transition:transform .25s}
.adv-btn[aria-expanded="true"] svg{transform:rotate(180deg)}
.adv{margin-top:10px;background:var(--panel);border:1px solid var(--line);border-radius:14px;padding:2px 16px}
.adv dl{margin:0}
.adv dl>div{display:flex;justify-content:space-between;gap:16px;padding:12px 0;border-bottom:1px solid var(--line);font-size:14px}
.adv dl>div:last-child{border-bottom:0}
.adv dt{color:var(--muted)}
.adv dd{margin:0;text-align:right;font-variant-numeric:tabular-nums;word-break:break-all}

/* info sheet */
dialog{background:#160f27;color:var(--ink);border:1px solid var(--line);border-radius:18px;
  width:calc(100% - 32px);max-width:440px;padding:22px 22px 18px;font-size:15px}
dialog::backdrop{background:rgba(5,3,10,.7)}
dialog h2{margin:0 0 8px;font-size:19px}
dialog ul{padding-left:18px;margin:10px 0}
dialog li{margin:6px 0;color:#d9d2ea}
dialog p{margin:8px 0}
dialog form{margin-top:16px}

@media (min-width:600px){ .bar{padding-top:20px} .scene svg{margin-top:16px} }
@media (prefers-reduced-motion:reduce){ .spin{animation-duration:2.4s} }