/* =========================================================
   Arx — top nav, footer, and shared chrome
   ========================================================= */

/* ---------- ANNOUNCEMENT BAR ---------- */
.announce {
  border-bottom: 1px solid var(--rule);
  background: var(--paper-2);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--ink-2);
}
.announce .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 36px;
}
.announce .left { display: flex; align-items: center; gap: 10px; }
.announce .left .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--signal); box-shadow: 0 0 0 4px rgba(181,74,43,.12); }
.announce a { text-decoration: underline; text-decoration-color: var(--rule-2); text-underline-offset: 3px; }
.announce .right { display: flex; gap: 16px; white-space: nowrap; }
.announce .right span { color: var(--ink-3); }
@media (max-width: 900px) { .announce .right { display: none; } }

/* ---------- NAV ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(246,243,236,0.82);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid var(--rule);
}
.nav .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px;
}
.nav-left, .nav-right { display: flex; align-items: center; gap: 28px; }
.nav-center { display: flex; align-items: center; gap: 28px; }

.logo {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-display);
  font-weight: 420;
  font-size: 20px;
  letter-spacing: -0.02em;
  color: var(--ink);
}
.logo-mark {
  width: 22px; height: 22px;
  display: inline-grid; place-items: center;
  color: var(--paper);
}
.logo sup {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--ink-3);
  letter-spacing: 0.08em;
  margin-left: 2px;
  font-weight: 500;
  transform: translateY(-6px);
  display: inline-block;
}

.nav a.navlink {
  font-size: 13.5px;
  color: var(--ink-2);
  letter-spacing: -0.005em;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 0;
  position: relative;
}
.nav a.navlink:hover { color: var(--ink); }
.nav a.navlink.active { color: var(--ink); }
.nav a.navlink.active::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -21px; height: 1px; background: var(--ink);
}
.nav a.navlink .caret { font-size: 10px; color: var(--ink-3); transform: translateY(1px); }

.nav .nav-cta { display: flex; gap: 14px; align-items: center; }
.nav .nav-cta .signin { font-size: 13.5px; color: var(--ink-2); padding-right: 6px; border-right: 1px solid var(--rule); padding-right: 14px; }
.nav .nav-cta .signin:hover { color: var(--ink); }
.nav .nav-cta .btn { height: 34px; padding: 0 14px; font-size: 13px; }

/* ---------- FOOTER ---------- */
.footer {
  border-top: 1px solid var(--rule);
  background: var(--paper);
  padding: 80px 0 32px;
  margin-top: 80px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr 1fr;
  gap: 48px;
  align-items: start;
}
.footer-brand .logo { font-size: 28px; }
.footer-brand p {
  margin-top: 20px;
  color: var(--ink-3);
  font-size: 14px;
  max-width: 32ch;
  line-height: 1.55;
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-bottom: 18px;
  font-weight: 500;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 10px; }
.footer-col a { color: var(--ink-2); font-size: 14px; }
.footer-col a:hover { color: var(--ink); text-decoration: underline; text-underline-offset: 3px; }

.footer-bottom {
  margin-top: 80px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--ink-3);
}
.footer-bottom .badges { display: flex; gap: 18px; align-items: center; }
.footer-bottom .badge {
  border: 1px solid var(--rule-2);
  padding: 4px 8px;
  border-radius: 2px;
  text-transform: uppercase;
}

/* Massive wordmark footer flourish */
.footer-wordmark {
  margin-top: 96px;
  font-family: var(--font-display);
  font-weight: 360;
  font-size: clamp(120px, 22vw, 320px);
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: var(--ink);
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
}
.footer-wordmark sup {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--ink-3);
  letter-spacing: 0.08em;
  transform: translateY(-6em);
  display: inline-block;
  font-weight: 500;
}

@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .nav-center { display: none; }
}