/* qem.zeke.ai: zeke.ai's look (its palette, Inter, pills and gradient), with
   the QEM's gold light kept for what the data shows: lit specks and certain hours. */
:root {
  --bg: #0e1011;
  --bg-2: #161819;
  --card: #161819;
  --card-2: #252728;
  --line: rgba(255, 255, 255, 0.08);
  --ink: #ffffff;
  --ink-2: rgba(255, 255, 255, 0.7);
  --muted: rgba(255, 255, 255, 0.5);
  --teal: #1295a2;
  --teal-ink: #4cc3cf;
  --zblue: #0b6aab;
  --grad: linear-gradient(90deg, #1295a2 0%, #0b6aab 100%);
  --subtle: rgba(255, 255, 255, 0.05);
  --emphasis: rgba(255, 255, 255, 0.1);
  --glass: rgba(0, 0, 0, 0.4);
  /* The QEM's light: gold for lit specks and certain hours, as in its pictures */
  --gold: #ffd27a;
  --gold-deep: #e8a93c;
  --blue: #9fb8ff;
  --guess: #5f7fd6;
  --rose: #ff8a7a;
  --display: Inter, "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --sans: Inter, "Public Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --radius: 24px;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 76px; }
body {
  margin: 0;
  color: var(--ink);
  font: 16px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  background: radial-gradient(ellipse at 50% -10%, rgba(18, 149, 162, 0.10), transparent 55%), var(--bg);
}
a { color: inherit; }
a.eco { color: var(--teal-ink); text-decoration: none; border-bottom: 1px solid rgba(76, 195, 207, 0.4); }
a.eco:hover { border-bottom-color: var(--teal-ink); }
h1, h2, h3 { font-family: var(--display); line-height: 1.15; margin: 0; letter-spacing: -0.02em; font-weight: 700; }
p { margin: 0; }
.mono { font-family: var(--mono); font-size: 0.92em; }
.wrap { width: min(1180px, 100% - 32px); margin-inline: auto; }
.small { font-size: 13.5px; color: var(--muted); }
.error { color: var(--rose); }
.gold { color: var(--gold); }

/* Header */
.top {
  position: sticky; top: 0; z-index: 10;
  background: var(--bg);
  border-bottom: 1px solid var(--line);
  --hub-globe-ink: var(--muted);
  --hub-globe-hover: rgba(255, 255, 255, 0.08);
}
.top-row { display: flex; align-items: center; gap: 8px; height: 80px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-zeke {
  display: inline-flex; align-items: center; gap: 7px; margin-right: auto; margin-left: 6px;
  padding: 4px 12px 4px 5px; border-radius: 100px; background: var(--subtle); border: 1px solid var(--subtle);
  color: var(--ink-2); font-size: 13px; font-weight: 600; text-decoration: none;
}
.brand-zeke:hover { background: var(--emphasis); color: var(--ink); }
.brand-zeke img { width: 22px; height: 22px; border-radius: 50%; }
.brand-mark {
  width: 26px; height: 26px; border-radius: 50%;
  background: radial-gradient(circle, #fff6d8 0 18%, var(--gold) 34%, rgba(255, 179, 71, 0) 70%);
  box-shadow: 0 0 18px rgba(255, 210, 122, 0.55);
}
.brand-name { font-family: var(--display); font-weight: 700; font-size: 22px; letter-spacing: -0.5px; }
.nav { display: flex; align-items: center; gap: 2px; }
.nav a { text-decoration: none; color: var(--ink-2); font-size: 14px; font-weight: 600; padding: 8px 12px; border-radius: 100px; }
.nav a:hover { color: var(--ink); }
.nav .nav-cta { background: var(--grad); color: #fff; margin-left: 8px; font-weight: 700; padding: 9px 20px; }
.nav .nav-cta:hover { filter: brightness(1.1); color: #fff; }
.menu { display: none; }

/* Hero */
.hero { padding: 80px 0 56px; }
.hero-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 56px; align-items: center; }
.hero-grid > * { min-width: 0; }
.eyebrow { font-size: 12px; font-weight: 800; letter-spacing: 0.12em; text-transform: uppercase; color: var(--teal-ink); margin-bottom: 12px; }
.badge {
  display: inline-flex; align-items: center; gap: 10px; padding: 6px 16px; border-radius: 100px; margin-bottom: 28px;
  background: var(--card-2); border: 1px solid var(--subtle);
  font-size: 10px; font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase; color: var(--ink-2);
}
.badge-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 8px var(--gold); }
.grad { background: var(--grad); -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent; }
h1 { font-size: clamp(40px, 5.6vw, 68px); font-weight: 700; letter-spacing: -0.035em; }
.lede { font-size: 18.5px; color: var(--ink-2); margin-top: 20px; max-width: 58ch; }
.hero-actions { display: flex; gap: 12px; margin-top: 28px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; height: 46px; padding: 0 24px; border-radius: 100px;
  border: 1px solid var(--subtle); background: var(--glass); color: var(--ink-2);
  font: 600 14px var(--sans); text-decoration: none; cursor: pointer; transition: background 0.15s, color 0.15s, filter 0.15s;
}
.btn:hover { background: var(--subtle); border-color: var(--emphasis); color: var(--ink); }
.btn.primary { background: var(--grad); border: 0; color: #fff; font-weight: 700; }
.btn.primary:hover { filter: brightness(1.1); }
.hero-stats { margin: 0; display: grid; gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.hero-stats div { background: var(--card); padding: 20px 24px; }
.hero-stats dt { font-size: 13px; color: var(--muted); }
.hero-stats dd { margin: 4px 0 0; font-family: var(--display); font-size: 32px; font-weight: 700; font-variant-numeric: tabular-nums; }

/* Sections */
.section { padding: 64px 0; }
.section-head { margin-bottom: 28px; max-width: 780px; }
.section-head h2 { font-size: clamp(28px, 3.4vw, 40px); }
.section-head p { color: var(--muted); margin-top: 10px; }
.card { background: var(--card); border: 1px solid var(--subtle); border-radius: var(--radius); min-width: 0; }

/* How it works */
.steps { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.step { padding: 26px; }
.step-n {
  display: inline-grid; place-items: center; width: 34px; height: 34px; border-radius: 50%;
  background: rgba(18, 149, 162, 0.15); color: var(--teal-ink); font-family: var(--display); font-weight: 700;
}
.step h3 { font-size: 20px; margin: 16px 0 8px; }
.step p { color: var(--ink-2); font-size: 15px; }

/* Light */
.light-grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 20px; }
.light-grid > * { min-width: 0; }
.terms { margin: 0; padding: 8px 26px; }
.terms div { padding: 14px 0; border-bottom: 1px solid var(--line); }
.terms div:last-child { border-bottom: 0; }
.terms dt { font-family: var(--display); font-weight: 700; color: var(--teal-ink); }
.terms dd { margin: 2px 0 0; color: var(--ink-2); font-size: 15px; }
.bands { padding: 26px; }
.bands h3 { font-size: 20px; margin-bottom: 12px; }
.bands table { width: 100%; border-collapse: collapse; font-size: 15px; }
.bands th { text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); font-weight: 600; padding: 8px 6px; border-bottom: 1px solid var(--line); }
.bands td { padding: 10px 6px; border-bottom: 1px solid var(--line); color: var(--ink-2); }
.bands td:first-child { color: var(--ink); font-weight: 500; white-space: nowrap; }
.bands .num { text-align: right; white-space: nowrap; }
.bands .small { margin-top: 14px; }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 10px; vertical-align: 0; }
.dot.ash { background: transparent; border: 1.5px solid #8a8f9c; }
.dot.b1 { background: rgba(255, 210, 122, 0.25); }
.dot.b2 { background: rgba(255, 210, 122, 0.45); }
.dot.b3 { background: rgba(255, 210, 122, 0.7); box-shadow: 0 0 6px rgba(255, 210, 122, 0.5); }
.dot.b4 { background: var(--gold); box-shadow: 0 0 10px rgba(255, 210, 122, 0.8); }
.dot.b5 { background: #fff8e4; box-shadow: 0 0 14px #fff1c4, 0 0 4px #fff; }

/* Principles */
.principles { list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 16px; }
.principles li { padding: 22px; }
.principles h3 { font-size: 17px; margin-bottom: 8px; }
.principles p { color: var(--ink-2); font-size: 14.5px; }

/* Live */
.stats { display: grid; grid-template-columns: repeat(5, 1fr); gap: 1px; background: var(--line); border-radius: var(--radius); overflow: hidden; }
.stat { background: var(--card); padding: 20px; display: flex; flex-direction: column; gap: 4px; }
.n { font-family: var(--display); font-size: 30px; font-weight: 700; font-variant-numeric: tabular-nums; }
.l { font-size: 13px; color: var(--muted); }
.stat.gold .n { color: var(--gold); }
.stat.blue .n { color: var(--blue); }
.stat.rose .n { color: var(--rose); }
.hues { list-style: none; padding: 0; margin: 16px 0 24px; display: flex; flex-wrap: wrap; gap: 8px 16px; font-size: 14px; color: var(--ink-2); }
.hue { display: inline-block; width: 12px; height: 12px; border-radius: 50%; margin-right: 7px; vertical-align: -1px; background: hsl(var(--h) 75% 65%); box-shadow: 0 0 8px hsl(var(--h) 75% 65% / 0.6); }
.live-pair { display: grid; grid-template-columns: 1.2fr 1fr; gap: 20px; margin-bottom: 20px; }
.live-pair > * { min-width: 0; }
.map { margin: 0; padding: 14px; }
.map img { width: 100%; height: auto; display: block; border-radius: 10px; }
.map figcaption { font-size: 13px; color: var(--muted); margin-top: 10px; }
.audit, .week { padding: 26px; }
.audit h3, .week h3 { font-size: 20px; margin-bottom: 8px; }
.audit-big { display: flex; flex-direction: column; margin: 18px 0 14px; }
.stack { display: flex; height: 14px; border-radius: 99px; overflow: hidden; background: rgba(255, 255, 255, 0.06); }
.stack .c, .sw.c, .week-bar .c { background: var(--gold); fill: var(--gold); }
.stack .g, .sw.g, .week-bar .g { background: var(--guess); fill: var(--guess); }
.stack .r, .sw.r, .week-bar .r { background: var(--rose); fill: var(--rose); }
.audit-list { list-style: none; padding: 0; margin: 14px 0; display: grid; gap: 8px; font-size: 14.5px; color: var(--ink-2); }
.audit-list strong { color: var(--ink); }
.sw { display: inline-block; width: 11px; height: 11px; border-radius: 3px; margin-right: 7px; vertical-align: -1px; }
.week-rows { display: grid; gap: 10px; margin-top: 18px; }
.week-label { display: flex; justify-content: space-between; gap: 12px; font-size: 13.5px; color: var(--ink-2); margin-bottom: 3px; }
.week-bar { display: block; width: 100%; height: 12px; background: rgba(255, 255, 255, 0.05); border-radius: 3px; }
.week-days { display: grid; grid-template-columns: repeat(var(--days), 1fr); margin-top: 8px; font-size: 11.5px; color: #6f7a9c; }
.week-days span { border-left: 1px solid var(--line); padding-left: 5px; overflow: hidden; white-space: nowrap; }
.legend { display: flex; gap: 18px; margin-top: 14px; font-size: 13px; color: var(--muted); }

/* Sources */
.list-title { font-size: 16px; color: var(--ink-2); margin: 0 0 12px; }
.sources { list-style: none; padding: 0; margin: 0 0 20px; display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.source { padding: 18px; display: flex; flex-direction: column; gap: 8px; }
.source.off { opacity: 0.72; }
.source-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; }
.source-head a { font-family: var(--display); font-weight: 600; text-decoration: none; }
.source-head a:hover { color: var(--teal-ink); }
.hue-chip {
  flex: none; font-size: 12px; font-family: var(--mono); padding: 2px 8px; border-radius: 99px;
  color: hsl(var(--h) 80% 78%); background: hsl(var(--h) 70% 55% / 0.14); border: 1px solid hsl(var(--h) 70% 60% / 0.35);
}
.source p { font-size: 14px; color: var(--ink-2); display: -webkit-box; -webkit-line-clamp: 4; -webkit-box-orient: vertical; overflow: hidden; }
.source .meta { display: flex; gap: 6px; flex-wrap: wrap; }
.source .meta span { background: rgba(255, 255, 255, 0.06); border-radius: 6px; padding: 1px 8px; }
.source .licence { -webkit-line-clamp: 2; }
.more summary { cursor: pointer; color: var(--ink-2); font-family: var(--display); font-weight: 600; margin-bottom: 12px; }

/* Open data */
.files { padding: 26px; }
.files ul { list-style: none; padding: 0; margin: 0 0 14px; display: grid; gap: 10px; }
.files li { display: flex; flex-wrap: wrap; gap: 4px 16px; align-items: baseline; }
.files li a { color: var(--teal-ink); text-decoration: none; }
.files li a:hover { text-decoration: underline; }
.files li span { color: var(--ink-2); font-size: 14.5px; }
.files .btn { margin-top: 16px; }

.physics p { color: var(--muted); font-size: 14.5px; max-width: 80ch; }

/* The shared footer, in the QEM's colours */
.hub-footer[data-site="zeke"] {
  --hub-footer-bg: #161819;
  --hub-footer-ink: #ffffff;
  --hub-footer-muted: rgba(255, 255, 255, 0.6);
  --hub-footer-rule: rgba(255, 255, 255, 0.12);
  --hub-footer-accent: var(--teal-ink);
  --hub-footer-tile: rgba(18, 149, 162, 0.10);
  --hub-footer-font: var(--sans);
  --hub-footer-display: var(--display);
  margin-top: 24px;
}
.hub-footer[data-site="zeke"] .hub-footer__cta { background: var(--grad); color: #fff !important; border-radius: 100px; }

/* Narrow screens */
@media (max-width: 980px) {
  .hero-grid, .light-grid, .live-pair { grid-template-columns: 1fr; gap: 24px; }
  .steps { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .stats .stat:last-child { grid-column: span 2; }
}
@media (max-width: 760px) {
  .brand-zeke span { display: none; }
  .brand-zeke { padding: 4px; }
  .nav {
    display: none; position: absolute; top: 80px; left: 0; right: 0; flex-direction: column; align-items: stretch;
    background: var(--bg); border-bottom: 1px solid var(--line); padding: 8px 16px 16px;
  }
  .top.open .nav { display: flex; }
  .nav .nav-cta { margin: 8px 0 0; text-align: center; }
  .menu {
    display: grid; gap: 6px; align-content: center; justify-items: center; width: 40px; height: 40px;
    border: 1px solid var(--line); border-radius: 10px; background: var(--card); cursor: pointer;
  }
  .menu span { display: block; width: 18px; height: 2px; background: var(--ink); border-radius: 2px; transition: transform 0.2s; }
  .top.open .menu span:first-child { transform: translateY(4px) rotate(45deg); }
  .top.open .menu span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .hero { padding: 48px 0 32px; }
  .lede { font-size: 16.5px; }
  .section { padding: 44px 0; }
  .week-days span { font-size: 0; }
  .week-days span::first-letter { font-size: 11px; }
}