/* ================================================================
   Terra Vita Hub OS — Global / FieldTrace Family Alignment v501.1
   Uses the exact Terra Vita Global and FieldTrace 1 visual family.
   ================================================================ */

body.os-body {
  padding-top: 76px;
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: "DM Sans", ui-sans-serif, system-ui, sans-serif;
  font-size: 15px;
  line-height: 1.55;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.039 0 0 0 0 0.165 0 0 0 0 0.263 0 0 0 0.04 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  background-attachment: fixed;
}
body.os-body * { box-sizing: border-box; }
body.os-body p { margin: 0; }
body.os-body h1,
body.os-body h2,
body.os-body h3 {
  font-family: "Fraunces", ui-serif, Georgia, serif;
  color: var(--ink);
  font-weight: 500;
  letter-spacing: -.015em;
  line-height: 1.05;
}
body.os-body a { color: inherit; text-decoration: none; }

/* Exact family header */
.os-family-header .tvg-logo-tag { display: inline-block; }
.os-family-header .tvg-nav-primary { gap: 18px; }
.os-family-header .tvg-nav-primary a { font-size: 12px; }
.os-family-header .tvg-nav-actions { padding-left: 14px; }
.os-family-header .tvg-cta-primary { padding: 12px 18px; }
@media (max-width: 1239px) {
  .os-family-header .tvg-logo-tag { display: none; }
}

/* Main shell */
.os-shell {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 48px 0 72px;
}
.os-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(300px, .72fr);
  gap: 24px;
  align-items: stretch;
}
.os-panel,
.os-boundary,
.os-card,
.programme-card,
.archive-banner,
.workspace-panel,
.library-card,
.flow > div,
.optional-note {
  border: 1px solid var(--rule-soft);
  background: rgba(255,253,246,.72);
  box-shadow: 0 20px 44px -34px rgba(10,42,67,.32);
}
.os-panel {
  padding: clamp(28px, 5vw, 48px);
}
.os-panel h1 {
  max-width: 11ch;
  margin: 16px 0 24px;
  font-size: clamp(48px, 6.2vw, 82px);
}
.os-lead {
  max-width: 70ch;
  color: var(--ink-soft);
  font-size: 18px;
  line-height: 1.7;
}
.os-kicker,
.programme-code,
.metric-label {
  font: 500 11px/1 "JetBrains Mono", monospace;
  text-transform: uppercase;
  letter-spacing: var(--track);
  color: var(--accent);
}
.os-chiprow,
.workspace-row,
.os-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.os-chiprow { margin-top: 24px; }
.os-chip,
.workspace-pill,
.state {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 8px 12px;
  border: 1px solid var(--rule-soft);
  background: var(--paper-pure);
  color: var(--ink);
  font: 500 10px/1 "JetBrains Mono", monospace;
  text-transform: uppercase;
  letter-spacing: .08em;
}
.workspace-pill.optional { color: var(--ink-soft); border-style: dashed; }
.os-boundary {
  padding: clamp(26px, 4vw, 38px);
  background: var(--ink);
  color: var(--cream);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.os-boundary h2,
.os-boundary p { color: var(--cream); }
.os-boundary h2 {
  margin: 28px 0 24px;
  font-size: clamp(30px, 3vw, 42px);
}
.os-boundary p { opacity: .82; line-height: 1.75; }
.os-boundary .os-chip {
  margin-top: 28px;
  background: rgba(255,255,255,.08);
  color: var(--cream);
  border-color: rgba(255,255,255,.2);
}

/* Retained library notice */
.archive-banner {
  margin-top: 24px;
  padding: 20px 24px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 22px;
  align-items: center;
  background: rgba(255,253,246,.5);
  border-left: 3px solid var(--accent);
}
.archive-banner strong { color: var(--ink); }
.archive-banner p { margin-top: 4px; color: var(--ink-soft); }

/* Buttons */
.os-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 12px 18px;
  background: var(--ink);
  color: var(--cream);
  border: 1px solid var(--ink);
  font: 500 11px/1 "JetBrains Mono", monospace;
  text-transform: uppercase;
  letter-spacing: .12em;
  transition: all 220ms var(--ease);
}
.os-btn:hover { background: var(--ink-deep); transform: translateY(-1px); }
.os-btn.secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--rule-soft);
}
.os-btn.secondary:hover {
  background: var(--ink);
  color: var(--cream);
  border-color: var(--ink);
}

/* Metrics and programme cards */
.os-grid,
.programme-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.os-grid { margin-top: 24px; }
.os-card,
.programme-card,
.library-card,
.workspace-panel {
  padding: 24px;
}
.os-card .metric {
  display: block;
  margin: 16px 0 10px;
  font-family: "Fraunces", serif;
  font-size: 46px;
  font-weight: 500;
  color: var(--ink);
}
.os-card h3,
.programme-card h3,
.library-card h3,
.workspace-panel h3 {
  margin: 10px 0 12px;
  font-size: 26px;
}
.os-card p,
.programme-card p,
.library-card p,
.workspace-panel p { color: var(--ink-soft); }

.os-section-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, .55fr);
  gap: 28px;
  align-items: end;
  margin: 60px 0 22px;
}
.os-section-head h2 { margin-top: 12px; font-size: clamp(34px, 4vw, 52px); }
.os-section-head > p { color: var(--ink-soft); }

.programme-card-head {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
}
.programme-card .workspace-row { margin: 20px 0; }
.programme-card .os-actions { margin-top: 20px; }

/* Workspaces / tabs */
.workspace-tabs,
.os-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: 24px 0;
  border: 1px solid var(--rule-soft);
  background: rgba(255,253,246,.45);
}
.workspace-tabs a,
.os-tabs a {
  padding: 13px 16px;
  border-right: 1px solid var(--rule-soft);
  color: var(--ink-soft);
  font: 500 11px/1 "JetBrains Mono", monospace;
  text-transform: uppercase;
  letter-spacing: .08em;
}
.workspace-tabs a:hover,
.workspace-tabs a.active,
.os-tabs a:hover,
.os-tabs a.active {
  background: var(--ink);
  color: var(--cream);
}

/* Flow */
.flow {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  border: 1px solid var(--ink);
  background: var(--ink);
}
.flow > div {
  padding: 22px;
  min-height: 138px;
  background: var(--paper-pure);
  border: 0;
  box-shadow: none;
  color: var(--ink-soft);
}
.flow b {
  display: block;
  margin-bottom: 16px;
  color: var(--ink);
  font: 500 11px/1 "JetBrains Mono", monospace;
  text-transform: uppercase;
  letter-spacing: .1em;
}
.optional-note {
  margin-top: 24px;
  padding: 18px 20px;
  border-left: 3px solid var(--accent-warm);
  color: var(--ink-soft);
}
.optional-note strong { color: var(--ink); }

/* Footer */
.os-footer {
  border-top: 1px solid var(--ink);
  background: var(--paper-pure);
  color: var(--ink-soft);
}
.os-footer-inner {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 24px 0 34px;
  display: flex;
  justify-content: space-between;
  gap: 24px;
  font-size: 13px;
}
.os-footer strong { color: var(--ink); }

/* Library */
.library-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 18px;
}
.library-card ul { margin: 16px 0 0; padding: 0; list-style: none; }
.library-card li + li { margin-top: 9px; }
.library-card a { color: var(--ink); }
.library-card a:hover { color: var(--accent); }

/* Responsive */
@media (max-width: 900px) {
  .os-hero,
  .os-section-head { grid-template-columns: 1fr; }
  .os-grid,
  .programme-grid,
  .library-grid { grid-template-columns: 1fr; }
  .flow { grid-template-columns: 1fr; }
  .archive-banner { grid-template-columns: 1fr; }
  .os-footer-inner { flex-direction: column; }
}
@media (max-width: 620px) {
  .os-shell,
  .os-footer-inner { width: min(100% - 28px, 1180px); }
  .os-shell { padding-top: 28px; }
  .os-panel h1 { font-size: 44px; }
  .programme-card-head { display: block; }
  .programme-card-head .state { margin-top: 12px; }
}