/* ============================================================
   Apex Labs — family design system (derived from tohe-ux-spec §2)
   Dark-first. Red is meaning (Tohe). Per-app accents.
   ============================================================ */
:root{
  --bg:#0D0D0D;            /* surface.base */
  --card:#1A1A1C;          /* surface.raised */
  --overlay:#242426;       /* surface.overlay */
  --ink:#F5F5F5;           /* text.primary */
  --muted:#9E9EA3;         /* text.secondary */
  --hairline:rgba(255,255,255,.07);
  --hairline-soft:rgba(255,255,255,.045);

  /* per-app accents. Tohe is fixed by spec; Waka & Kaha are
     placeholders until each app picks its own. */
  --tohe:#E23A2E;
  --waka:#4FB3CE;
  --kaha:#E3A93C;
  --accent:var(--ink);     /* page-level accent; overridden per app page */

  --sans:-apple-system,BlinkMacSystemFont,"SF Pro Text","SF Pro Display","Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",SFMono-Regular,Menlo,Consolas,"Liberation Mono",monospace;
  --max:1080px;
  --max-narrow:820px;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  font-family:var(--sans);
  background:var(--bg);
  color:var(--ink);
  line-height:1.65;
  font-size:17px;
  -webkit-font-smoothing:antialiased;
}
.mono{font-family:var(--mono)}
.wrap{max-width:var(--max);margin:0 auto;padding:0 24px}
.wrap-narrow{max-width:var(--max-narrow);margin:0 auto;padding:0 24px}

a:focus-visible{outline:2px solid var(--ink);outline-offset:3px;border-radius:2px}

/* ---------- header ---------- */
header.site{
  border-bottom:1px solid var(--hairline);
  background:rgba(13,13,13,.92);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  position:sticky;top:0;z-index:10;
}
.nav{display:flex;align-items:center;justify-content:space-between;height:64px;max-width:var(--max);margin:0 auto;padding:0 24px}
.wordmark{display:flex;align-items:baseline;gap:10px;text-decoration:none;color:var(--ink)}
.wordmark .apex{font-weight:800;font-size:19px;letter-spacing:.14em}
.wordmark .labs{font-family:var(--mono);font-size:12px;letter-spacing:.3em;color:var(--muted)}
nav.links{display:flex;gap:22px;flex-wrap:wrap}
nav.links a{text-decoration:none;color:var(--muted);font-size:14px;font-weight:500;letter-spacing:.04em}
nav.links a:hover,nav.links a:focus-visible{color:var(--ink)}
nav.links a[aria-current="page"]{color:var(--ink)}

/* ---------- niho taniwha seam rule (signature) ----------
   The spec's pattern band: a single dogtooth row, hairline, low
   opacity, used only at seams between major sections. */
.tohu-rule{
  height:7px;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='7'%3E%3Cpath d='M0 6.5 L7 0.5 L14 6.5' fill='none' stroke='%239E9EA3' stroke-width='1'/%3E%3C/svg%3E");
  background-repeat:repeat-x;
  background-position:center;
  opacity:.28;
  margin:0 auto;
  max-width:var(--max);
}

/* ---------- type scale ---------- */
.eyebrow{
  font-family:var(--mono);font-size:12px;letter-spacing:.24em;
  text-transform:uppercase;color:var(--muted);margin-bottom:14px;
}
.eyebrow b{color:var(--accent);font-weight:500}
h1{font-weight:800;font-size:clamp(32px,5vw,54px);line-height:1.08;letter-spacing:-.015em}
h2{font-weight:700;font-size:clamp(24px,3.2vw,32px);letter-spacing:-.01em;line-height:1.15}
h3{font-weight:700;font-size:18.5px;margin:30px 0 8px}
.lede{margin-top:20px;font-size:19px;color:var(--muted);max-width:56ch}
p{margin-top:12px;color:var(--muted)}
p.first{margin-top:0}
ul{margin:12px 0 0 22px;color:var(--muted)}
li{margin-top:8px}
main a{color:var(--ink);text-decoration:none;border-bottom:1.5px solid var(--accent)}
main a:hover{color:var(--accent)}
.meta{font-family:var(--mono);font-size:13px;letter-spacing:.06em;color:var(--muted);margin-top:22px;line-height:1.7}

section{padding:84px 0}

/* ---------- hero ---------- */
.hero{padding:100px 0 88px}
.hero .lede{font-size:19.5px}

/* ---------- app cards (index) ---------- */
.apps{margin-top:56px;display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.app-card{
  display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--hairline);
  border-radius:12px;padding:28px 26px;
  text-decoration:none;color:var(--ink);
  transition:border-color .15s ease;
}
.app-card:hover,.app-card:focus-visible{border-color:var(--app,var(--muted))}
.app-card .gloss{
  font-family:var(--mono);font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--muted);
}
.app-card .gloss b{color:var(--app,var(--ink));font-weight:500}
.app-card h3{font-size:26px;font-weight:800;margin:10px 0 4px;letter-spacing:-.01em}
.app-card .thesis{font-size:15.5px;color:var(--muted);flex:1}
.app-card .status{
  margin-top:22px;display:flex;align-items:center;gap:10px;
  font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--muted);
  text-transform:uppercase;
}
.app-card .status .dot{width:8px;height:8px;border-radius:50%;background:var(--app,var(--muted));flex:none}

/* ---------- generic card / panel ---------- */
.panel{
  background:var(--card);border:1px solid var(--hairline);
  border-radius:12px;padding:24px 26px;margin-top:28px;
}
.panel p{color:var(--muted)}
.panel .strong{color:var(--ink)}

/* ---------- feature grid (app pages) ---------- */
.grid2{margin-top:40px;display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.feature{
  background:var(--card);border:1px solid var(--hairline);
  border-radius:12px;padding:26px 24px;
}
.feature .f-label{
  font-family:var(--mono);font-size:11.5px;letter-spacing:.16em;
  color:var(--accent);text-transform:uppercase;
}
.feature h3{font-size:18.5px;margin:8px 0 6px}
.feature p{font-size:15px;margin-top:0}

/* ---------- registry / definition lists ---------- */
.registry{
  background:var(--card);border:1px solid var(--hairline);border-radius:12px;
  padding:26px;font-size:14.5px;align-self:start;
}
.registry dt{
  font-family:var(--mono);font-size:11px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--muted);margin-top:16px;
}
.registry dt:first-child{margin-top:0}
.registry dd{margin-top:3px;font-weight:500;color:var(--ink)}

/* ---------- about / contact ---------- */
.cols{margin-top:34px;display:grid;grid-template-columns:1.4fr 1fr;gap:56px}
.contact-grid{margin-top:36px;display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.contact-cell{background:var(--card);border:1px solid var(--hairline);border-radius:12px;padding:28px 26px}
.contact-cell .c-label{
  font-family:var(--mono);font-size:12px;letter-spacing:.2em;
  text-transform:uppercase;color:var(--muted);
}
.contact-cell a{
  display:inline-block;margin-top:10px;font-size:18px;font-weight:700;
  color:var(--ink);text-decoration:none;border-bottom:2px solid var(--accent);
}
.contact-cell a:hover,.contact-cell a:focus-visible{color:var(--accent)}
.contact-cell p{margin-top:10px;font-size:14.5px}

/* ---------- footer ---------- */
footer.site{border-top:1px solid var(--hairline);padding:36px 0 44px}
.foot{
  display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;
  font-family:var(--mono);font-size:12.5px;letter-spacing:.05em;color:var(--muted);
  max-width:var(--max);margin:0 auto;padding:0 24px;
}
.foot a{color:inherit}
.foot a:hover{color:var(--ink)}

/* ---------- app page hero ---------- */
main.app-page{padding:72px 0 88px}
.app-tag{
  display:inline-block;font-family:var(--mono);font-size:12px;
  letter-spacing:.2em;text-transform:uppercase;color:var(--accent);
  border:1px solid var(--hairline);border-radius:99px;padding:5px 14px;
  margin-bottom:18px;
}

/* ---------- responsive ---------- */
@media (max-width:860px){
  .apps{grid-template-columns:1fr}
  .grid2{grid-template-columns:1fr}
  .cols{grid-template-columns:1fr;gap:32px}
  .contact-grid{grid-template-columns:1fr}
  .hero{padding:72px 0 64px}
  section{padding:60px 0}
  nav.links{gap:14px}
}