/* GetYahRootBack — terminal-flavoured research site
   dark, raw, readable. no frameworks, no tracking, no surprises. */

:root {
  --bg: #0a0e14;
  --bg2: #0d1219;
  --panel: #10151d;
  --panel2: #141b25;
  --border: #1e2632;
  --border2: #2a3544;
  --text: #dbe2ea;
  --dim: #7d8794;
  --faint: #4d5764;
  --green: #4ade80;
  --green-dim: #1d5a34;
  --red: #f85149;
  --red-dim: #5c1f1c;
  --amber: #e3b341;
  --amber-dim: #54420f;
  --blue: #58a6ff;
  --blue-dim: #1c3a5c;
  --purple: #bd93f9;
  --mono: "Cascadia Code", "JetBrains Mono", "Fira Code", Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --w: 1080px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.65 var(--sans);
  -webkit-font-smoothing: antialiased;
  background-image: radial-gradient(1200px 500px at 80% -10%, rgba(74, 222, 128, 0.05), transparent),
                    radial-gradient(900px 400px at 0% 0%, rgba(88, 166, 255, 0.04), transparent);
  background-repeat: no-repeat;
}
a { color: var(--blue); text-decoration: none; }
a:hover { color: #9cc7ff; }
::selection { background: rgba(74, 222, 128, 0.25); }

/* --------------------------------------------------------------- topbar */
.topbar {
  position: sticky; top: 0; z-index: 50;
  background: rgba(10, 14, 20, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}
.topbar-in {
  max-width: var(--w); margin: 0 auto; padding: 0 20px;
  height: 58px; display: flex; align-items: center; gap: 28px;
}
.logo {
  font: 600 15px var(--mono); color: var(--text); letter-spacing: 0.2px;
  white-space: nowrap;
}
.logo:hover { color: var(--green); }
.logo-prompt { color: var(--green); }
.caret {
  display: inline-block; color: var(--green);
  animation: blink 1.1s steps(2) infinite;
}
@keyframes blink { 50% { opacity: 0; } }
.nav { display: flex; gap: 22px; margin-right: auto; }
.nav a {
  font: 500 13.5px var(--mono); color: var(--dim); letter-spacing: 0.3px;
}
.nav a:hover { color: var(--green); }
.live {
  font: 600 12px var(--mono); color: var(--dim);
  display: flex; align-items: center; gap: 7px;
}
.led {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--green); box-shadow: 0 0 8px var(--green);
  animation: pulse 2s infinite;
}
@keyframes pulse { 50% { opacity: 0.35; } }
.burger {
  display: none; background: none; border: 1px solid var(--border2);
  color: var(--text); font: 600 15px var(--mono);
  padding: 4px 12px; border-radius: 6px; cursor: pointer;
}

/* ---------------------------------------------------------------- page */
.page {
  max-width: var(--w); margin: 0 auto; padding: 34px 20px 90px;
  min-height: 60vh;
}
.crumb {
  font: 12.5px var(--mono); color: var(--faint); margin-bottom: 22px;
  display: flex; gap: 8px; align-items: center;
}
.crumb a { color: var(--dim); }
.crumb a:hover { color: var(--green); }

/* ----------------------------------------------------------------- toc */
.toc {
  float: right; width: 240px; margin: 0 0 24px 34px;
  position: sticky; top: 84px;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px;
  font-size: 13px;
}
.toc-title {
  font: 600 11px var(--mono); color: var(--faint);
  text-transform: uppercase; letter-spacing: 1.2px; margin-bottom: 10px;
}
.toc a {
  display: block; color: var(--dim); padding: 3.5px 0;
  border-left: 2px solid var(--border); padding-left: 10px;
}
.toc a:hover { color: var(--green); border-left-color: var(--green); }
.toc a.toc-lvl3 { padding-left: 22px; font-size: 12.5px; }

/* -------------------------------------------------------------- content */
.content { overflow: hidden; }
.content h1 {
  font-size: 30px; margin: 4px 0 14px; letter-spacing: -0.3px;
  color: #eef3f8;
}
.content h2 {
  font-size: 21px; margin: 42px 0 14px; padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
  scroll-margin-top: 80px;
}
.content h3 { font-size: 16.5px; margin: 28px 0 10px; scroll-margin-top: 80px; }
.content p { margin: 12px 0; }
.content ul, .content ol { padding-left: 22px; }
.content li { margin: 5px 0; }
.content li::marker { color: var(--green); }
.content code {
  font: 13px var(--mono); background: var(--panel2);
  padding: 2px 7px; border-radius: 5px; border: 1px solid var(--border);
}
.content pre.codeblock {
  background: var(--bg2); border: 1px solid var(--border2);
  border-radius: 10px; padding: 16px 18px; overflow-x: auto;
  margin: 18px 0;
}
.content pre.codeblock code {
  background: none; border: 0; padding: 0; font: 13.5px/1.6 var(--mono);
  color: var(--text);
}
pre.codeblock { position: relative; }
.copy-btn {
  position: absolute; top: 8px; right: 10px;
  background: var(--panel2); border: 1px solid var(--border2);
  color: var(--dim); font: 11px var(--mono); padding: 3px 10px;
  border-radius: 6px; cursor: pointer;
  opacity: 0; transition: opacity 0.15s;
}
pre.codeblock:hover .copy-btn { opacity: 1; }
.copy-btn:hover { color: var(--green); border-color: var(--green); }
.content blockquote {
  margin: 16px 0; padding: 10px 18px;
  border-left: 3px solid var(--green);
  background: rgba(74, 222, 128, 0.04);
  border-radius: 0 8px 8px 0; color: #b9c4cf;
}
.content hr { border: 0; border-top: 1px solid var(--border); margin: 28px 0; }
.content table {
  border-collapse: collapse; width: 100%; margin: 18px 0;
  font-size: 13.5px;
}
.content th {
  background: var(--panel2); text-align: left; padding: 9px 12px;
  border: 1px solid var(--border2); font-weight: 600;
}
.content td { border: 1px solid var(--border); padding: 8px 12px; }
.content tr:nth-child(even) td { background: rgba(255, 255, 255, 0.015); }
.content del { color: var(--faint); }

/* syntax highlight */
.content .c { color: #5c6b7a; font-style: italic; }
.content .s { color: #e3b341; }
.content .k { color: var(--purple); }
.content .n { color: var(--blue); }
.content .o { color: #58d6c9; }

/* pager */
.pager {
  display: inline-block; margin: 46px 10px 0 0;
  font: 13px var(--mono); color: var(--dim);
  border: 1px solid var(--border2); border-radius: 8px; padding: 9px 16px;
}
.pager:hover { color: var(--green); border-color: var(--green); }

/* --------------------------------------------------------------- hero */
.hero { border-bottom: 1px solid var(--border); background: var(--bg2); }
.hero-in {
  max-width: var(--w); margin: 0 auto; padding: 58px 20px 62px;
  display: grid; grid-template-columns: 1.05fr 1fr; gap: 46px; align-items: center;
}
.term {
  background: var(--bg); border: 1px solid var(--border2);
  border-radius: 12px; overflow: hidden;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.45);
}
.term-bar {
  display: flex; align-items: center; gap: 7px;
  background: var(--panel); border-bottom: 1px solid var(--border);
  padding: 9px 14px;
}
.term-bar .dot { width: 11px; height: 11px; border-radius: 50%; }
.dot.r { background: var(--red); }
.dot.y { background: var(--amber); }
.dot.g { background: var(--green); }
.term-title { margin-left: 8px; font: 12px var(--mono); color: var(--faint); }
.term-body { padding: 20px 22px; font: 13.5px/1.9 var(--mono); color: var(--text); }
.term-prompt { color: var(--green); font-weight: 700; }
.term-out { color: var(--dim); }
.term-green { color: var(--green); font-weight: 600; }
.hero-copy h1 {
  font-size: 52px; margin: 0 0 14px; letter-spacing: -1.4px; line-height: 1.05;
  color: #eef3f8;
}
.hero-copy h1 .accent { color: var(--green); }
.tagline { color: var(--dim); font-size: 16.5px; margin: 0 0 26px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; }
.btn {
  display: inline-block; font: 600 14px var(--mono);
  background: var(--green); color: #06130a; padding: 11px 22px;
  border-radius: 8px; letter-spacing: 0.3px;
}
.btn:hover { background: #6eeea0; color: #06130a; }
.btn.ghost { background: none; border: 1px solid var(--border2); color: var(--dim); }
.btn.ghost:hover { color: var(--green); border-color: var(--green); }

/* -------------------------------------------------------------- shipped */
.shipped { border-bottom: 1px solid var(--border); }
.shipped-in {
  max-width: var(--w); margin: 0 auto; padding: 13px 20px;
  display: flex; align-items: center; flex-wrap: wrap;
  font: 13px var(--mono);
}
.shipped-in > * { margin-right: 14px; }
.shipped-in > *:last-child { margin-right: 0; }
.shipped-mark { color: var(--green); font-weight: 700; }
.shipped-tag {
  font: 700 10px var(--mono); text-transform: uppercase; letter-spacing: 1px;
  color: var(--green); background: var(--green-dim);
  padding: 3px 9px; border-radius: 20px; display: flex; align-items: center; gap: 6px;
}
.shipped-tag::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--green); box-shadow: 0 0 8px var(--green);
  animation: pulse 2s infinite;
}
.shipped-text { color: var(--dim); }
.shipped-text strong { color: var(--text); }
.shipped-go { color: var(--faint); white-space: nowrap; }
.shipped-go:hover { color: var(--green); }
.new-badge {
  font: 700 8.5px var(--mono); text-transform: uppercase; letter-spacing: 0.6px;
  color: var(--green); background: var(--green-dim);
  padding: 1.5px 6px; border-radius: 8px; margin-left: 5px;
  vertical-align: super;
}

/* -------------------------------------------------------------- tracks */
.tracks, .timeline { max-width: var(--w); margin: 0 auto; padding: 52px 20px 10px; }
.sec-title {
  font: 600 13px var(--mono); color: var(--green);
  letter-spacing: 1.6px; text-transform: uppercase; margin: 0 0 22px;
}
.sec-title::before { content: "// "; color: var(--faint); }
.track-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.track {
  display: block; background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 18px; color: var(--text);
  transition: transform 0.15s, border-color 0.15s;
}
.track:hover { transform: translateY(-3px); border-color: var(--border2); color: var(--text); }
.track-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.track-name { font: 700 14px var(--mono); }
.track p { margin: 0 0 16px; color: var(--dim); font-size: 13.5px; }
.track-go { font: 12.5px var(--mono); color: var(--faint); }
.track:hover .track-go { color: var(--green); }
.status {
  font: 700 10.5px var(--mono); text-transform: uppercase; letter-spacing: 0.8px;
  padding: 3px 9px; border-radius: 20px; display: flex; align-items: center; gap: 6px;
}
.status .led { width: 6px; height: 6px; box-shadow: none; animation: none; }
.status.green { color: var(--green); background: var(--green-dim); }
.status.green .led { background: var(--green); }
.status.red { color: var(--red); background: var(--red-dim); }
.status.red .led { background: var(--red); }
.status.amber { color: var(--amber); background: var(--amber-dim); }
.status.amber .led { background: var(--amber); }
.status.blue { color: var(--blue); background: var(--blue-dim); }
.status.blue .led { background: var(--blue); }

/* ------------------------------------------------------------ timeline */
.timeline { padding-bottom: 60px; }
.tl-item {
  position: relative; padding: 0 0 30px 46px;
  border-left: 1px solid var(--border2); margin-left: 8px;
}
.tl-item::before {
  content: ""; position: absolute; left: -5px; top: 6px;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--green); box-shadow: 0 0 10px rgba(74, 222, 128, 0.7);
}
.tl-item.hot {
  background: rgba(74, 222, 128, 0.04);
  border-left: 2px solid var(--green);
  margin-left: 8px;
  padding-left: 44px;
  border-radius: 0 12px 12px 0;
  box-shadow: 0 0 24px rgba(74, 222, 128, 0.08);
}
.hot-badge {
  font: 700 10px var(--mono); text-transform: uppercase; letter-spacing: 1px;
  color: var(--green); background: var(--green-dim);
  padding: 3px 10px; border-radius: 20px; display: inline-flex;
  align-items: center; gap: 6px; margin-left: 10px;
}
.hot-badge .led { width: 6px; height: 6px; box-shadow: none; }
.tl-date { font: 600 12.5px var(--mono); color: var(--amber); margin-bottom: 4px; }
.tl-body h2 {
  font-size: 19px; margin: 0 0 10px; border: 0; padding: 0;
  color: #eef3f8;
}
.tl-content { color: var(--dim); font-size: 14.5px; }
.tl-content p { margin: 8px 0; }
.tl-content h3 { font-size: 15px; color: var(--text); margin: 18px 0 6px; }
.tl-content pre.codeblock, .tl-content table { font-size: 13px; }
.context-card {
  margin: 20px 0 0 46px; background: var(--panel);
  border: 1px dashed var(--border2); border-radius: 12px; padding: 20px 24px;
  color: var(--dim); font-size: 14px;
}
.context-card h2 { font-size: 16px; color: var(--text); margin: 14px 0 8px; border: 0; }
.context-card h2:first-child { margin-top: 0; }

/* ---------------------------------------------------------------- 404 */
.nf { text-align: center; padding: 60px 20px; }
.nf-art {
  font: 13.5px/1.7 var(--mono); color: var(--red); text-align: left;
  display: inline-block; margin-bottom: 26px;
}
.nf h1 { font-size: 26px; margin-bottom: 26px; }

/* ------------------------------------------------------------ indexes */
.doclist { display: flex; flex-direction: column; gap: 10px; max-width: 720px; }
.doclink {
  display: flex; justify-content: space-between; align-items: center;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 15px 20px;
  font: 600 15px var(--mono); color: var(--text);
  transition: border-color 0.15s;
}
.doclink:hover { border-color: var(--green); color: var(--text); }
.doclink-arrow { color: var(--faint); }
.doclink:hover .doclink-arrow { color: var(--green); transform: translateX(4px); }

/* ------------------------------------------------------------ orbit hero */
.orbit-hero { margin-bottom: 10px; }
.orbit-hero h1 {
  font: 700 44px var(--mono); margin: 6px 0 12px; letter-spacing: -1px;
  color: #eef3f8;
}
.orbit-hero h1 .accent { color: var(--green); }
.orbit-hero .tagline { font-size: 16px; max-width: 560px; }

/* --------------------------------------------------------------- footer */
.footer { border-top: 1px solid var(--border); background: var(--bg2); }
.footer-in {
  max-width: var(--w); margin: 0 auto; padding: 26px 20px;
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  font: 12.5px var(--mono); color: var(--faint);
}
.footer-links { display: flex; gap: 18px; }
.footer-links a { color: var(--dim); }
.footer-links a:hover { color: var(--green); }

/* ------------------------------------------------------------ responsive */
@media (max-width: 900px) {
  .hero-in { grid-template-columns: 1fr; gap: 30px; padding: 44px 20px; }
  .hero-copy h1 { font-size: 40px; }
  .toc { display: none; }
}
@media (max-width: 720px) {
  .nav {
    display: none; position: absolute; top: 58px; left: 0; right: 0;
    flex-direction: column; background: var(--bg);
    border-bottom: 1px solid var(--border); padding: 14px 20px; gap: 14px;
  }
  .nav.open { display: flex; }
  .burger { display: block; }
  .live { margin-right: auto; }
  .tl-item { margin-left: 0; }
  .context-card { margin-left: 0; }
}