/* Go Past Earth — DocHub
   Visual hierarchy & flowchart hub for correct product development */

:root {
  --bg: #070b12;
  --bg-elev: #0d1420;
  --bg-card: #121b2b;
  --bg-card-hover: #172235;
  --border: #243044;
  --border-strong: #3a4f6b;
  --text: #e8eef7;
  --text-muted: #8b9bb3;
  --text-dim: #5f7190;
  --accent: #5eb1ff;
  --accent-soft: rgba(94, 177, 255, 0.12);
  --accent-2: #7c6cff;
  --good: #3dd68c;
  --warn: #f5a524;
  --risk: #f31260;
  --info: #33cfff;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Segoe UI", system-ui, -apple-system, Roboto, Helvetica, Arial, sans-serif;
  --radius: 14px;
  --shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  --nav-w: 280px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
  min-height: 100vh;
}

/* Background mesh */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 500px at 10% -10%, rgba(94, 177, 255, 0.14), transparent 55%),
    radial-gradient(700px 400px at 90% 0%, rgba(124, 108, 255, 0.12), transparent 50%),
    radial-gradient(600px 400px at 50% 100%, rgba(61, 214, 140, 0.06), transparent 50%);
  z-index: 0;
}

.shell {
  display: flex;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}

/* Sidebar */
.side {
  width: var(--nav-w);
  min-width: var(--nav-w);
  background: rgba(13, 20, 32, 0.92);
  border-right: 1px solid var(--border);
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  padding: 1.25rem 0 2rem;
}

.brand {
  padding: 0 1.25rem 1rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0.75rem;
}
.brand a {
  text-decoration: none;
  color: inherit;
  display: block;
}
.brand-mark {
  font-weight: 800;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.brand-mark .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  box-shadow: 0 0 12px rgba(94, 177, 255, 0.7);
}
.brand-sub {
  color: var(--text-muted);
  font-size: 0.78rem;
  margin-top: 0.25rem;
}

.side h3 {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
  margin: 1.1rem 1.25rem 0.4rem;
}
.side a {
  display: block;
  padding: 0.42rem 1.25rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  border-left: 3px solid transparent;
}
.side a:hover {
  color: var(--text);
  background: var(--accent-soft);
}
.side a.active {
  color: var(--accent);
  background: var(--accent-soft);
  border-left-color: var(--accent);
  font-weight: 600;
}
.side .ext {
  font-size: 0.78rem;
  opacity: 0.85;
}

/* Main */
.main {
  flex: 1;
  min-width: 0;
  padding: 2rem 2.5rem 4rem;
  max-width: 1100px;
}
.main.wide {
  max-width: 1480px;
}

/* Mind map page */
.jump-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 1rem 0 1.5rem;
  padding: 0.85rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  position: sticky;
  top: 0.5rem;
  z-index: 5;
  backdrop-filter: blur(10px);
}
.jump-nav a {
  font-size: 0.8rem;
  text-decoration: none;
  color: var(--text-muted);
  padding: 0.28rem 0.65rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-elev);
}
.jump-nav a:hover {
  color: var(--accent);
  border-color: var(--border-strong);
  background: var(--accent-soft);
}

.diagram.roomy {
  padding: 1.75rem 1.5rem;
  min-height: 280px;
}
.diagram.roomy .mermaid {
  min-height: 240px;
}
.branch-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.75rem;
  margin: 0.75rem 0 0;
}
.branch-meta .mini {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem 0.85rem;
  font-size: 0.86rem;
  color: var(--text-muted);
}
.branch-meta .mini strong {
  display: block;
  color: var(--text);
  font-size: 0.8rem;
  margin-bottom: 0.2rem;
}
.branch-meta code {
  font-size: 0.78em;
}

.hero {
  margin-bottom: 2rem;
}
.hero h1 {
  margin: 0 0 0.4rem;
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  letter-spacing: -0.02em;
  line-height: 1.2;
}
.hero p.lead {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 62ch;
  margin: 0.5rem 0 0;
}
.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.28rem 0.7rem;
  border-radius: 999px;
  font-size: 0.78rem;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--text-muted);
}
.pill strong { color: var(--text); font-weight: 600; }
.pill.live { border-color: rgba(61, 214, 140, 0.4); color: var(--good); }
.pill.warn { border-color: rgba(245, 165, 36, 0.4); color: var(--warn); }
.pill.risk { border-color: rgba(243, 18, 96, 0.4); color: var(--risk); }

/* Cards */
.grid {
  display: grid;
  gap: 1rem;
}
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.15rem 1.25rem;
  box-shadow: var(--shadow);
  transition: border-color 0.15s, transform 0.15s, background 0.15s;
}
a.card {
  text-decoration: none;
  color: inherit;
  display: block;
}
a.card:hover {
  border-color: var(--border-strong);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}
.card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
}
.card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.92rem;
}
.card .num {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.45rem;
}
.card .tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-top: 0.75rem;
}
.tag {
  font-size: 0.7rem;
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.tag.ok { color: var(--good); border-color: rgba(61, 214, 140, 0.35); }
.tag.gap { color: var(--warn); border-color: rgba(245, 165, 36, 0.35); }
.tag.core { color: var(--accent); border-color: rgba(94, 177, 255, 0.35); }

/* Sections */
section.block {
  margin: 2.5rem 0;
}
section.block > h2 {
  margin: 0 0 0.75rem;
  font-size: 1.4rem;
  color: var(--text);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
section.block > h2::before {
  content: "";
  width: 4px;
  height: 1.1em;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
}
section.block > .hint {
  color: var(--text-muted);
  margin: 0 0 1rem;
  max-width: 70ch;
}

/* Hierarchy tree (visual) */
.tree {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  overflow-x: auto;
}
.tree-node {
  margin: 0.25rem 0;
  padding: 0.45rem 0.65rem;
  border-left: 2px solid var(--border);
  margin-left: 0.5rem;
}
.tree-node.root {
  border-left-color: var(--accent);
  background: var(--accent-soft);
  border-radius: 8px;
  margin-left: 0;
  font-weight: 700;
}
.tree-node .name { font-weight: 600; }
.tree-node .path {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-left: 0.4rem;
}
.tree-node .desc {
  display: block;
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 400;
  margin-top: 0.15rem;
}
.tree-children {
  margin-left: 0.85rem;
  border-left: 1px dashed rgba(94, 177, 255, 0.2);
  padding-left: 0.35rem;
}

/* Layer stack strips */
.layer-stack { display: flex; flex-direction: column; gap: 0.65rem; }
.layer-strip {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.15rem;
  background: var(--bg-card);
  border-left-width: 5px;
}
.layer-l1 { border-left-color: #5eb1ff; }
.layer-l2 { border-left-color: #7c6cff; }
.layer-l3 { border-left-color: #33cfff; }
.layer-l4 { border-left-color: #3dd68c; }
.layer-l5 { border-left-color: #f5a524; }
.layer-l6 { border-left-color: #f31260; }
.layer-badge {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-dim);
}
.layer-strip h3 { margin: 0.25rem 0 0.35rem; font-size: 1.05rem; }
.layer-strip p { margin: 0; color: var(--text-muted); font-size: 0.92rem; }
.layer-strip code {
  font-family: var(--mono);
  font-size: 0.82em;
  background: var(--bg-elev);
  padding: 0.05rem 0.3rem;
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
th, td {
  text-align: left;
  padding: 0.65rem 0.85rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th {
  background: var(--bg-elev);
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
tr:last-child td { border-bottom: none; }
td code, p code, li code {
  font-family: var(--mono);
  font-size: 0.84em;
  background: var(--bg-elev);
  padding: 0.08rem 0.32rem;
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* Mermaid */
.diagram {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  margin: 1rem 0 1.5rem;
  overflow-x: auto;
}
.diagram .mermaid {
  display: flex;
  justify-content: center;
}
.diagram-caption {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin: -0.75rem 0 1.5rem;
}

/* Callouts */
.callout {
  border-radius: 12px;
  padding: 0.9rem 1.1rem;
  border: 1px solid var(--border);
  background: var(--bg-elev);
  margin: 1rem 0;
}
.callout strong { display: block; margin-bottom: 0.25rem; }
.callout.good { border-color: rgba(61, 214, 140, 0.35); background: rgba(61, 214, 140, 0.08); }
.callout.warn { border-color: rgba(245, 165, 36, 0.35); background: rgba(245, 165, 36, 0.08); }
.callout.risk { border-color: rgba(243, 18, 96, 0.35); background: rgba(243, 18, 96, 0.08); }
.callout.info { border-color: rgba(94, 177, 255, 0.35); background: rgba(94, 177, 255, 0.08); }

/* Status dots */
.status {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  margin-right: 0.35rem;
}
.status.solid { background: var(--good); }
.status.gap { background: var(--warn); }
.status.open { background: var(--risk); }
.status.partial { background: var(--info); }

/* Footer */
.foot {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.82rem;
}
.foot a { color: var(--accent); }

/* Mobile */
.nav-toggle {
  display: none;
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 50;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  padding: 0.5rem 0.75rem;
  font-size: 0.85rem;
  cursor: pointer;
}
@media (max-width: 900px) {
  .nav-toggle { display: block; }
  .side {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 40;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    box-shadow: var(--shadow);
  }
  .side.open { transform: translateX(0); }
  .main { padding: 4rem 1.15rem 3rem; }
}

/* Print */
@media print {
  .side, .nav-toggle { display: none; }
  .main { max-width: none; padding: 0; }
  body::before { display: none; }
}