/* ============================================================
   FRANCISCO — layout.css
   Navbar, footer, structural grids.
   ============================================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(236, 238, 240, 0.88);
  backdrop-filter: saturate(140%) blur(6px);
  border-bottom: 1px solid var(--line);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-block: 14px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: 0.01em;
}
.nav-brand:hover { color: var(--ink); }

.nav-mark {
  width: 22px;
  height: 22px;
  flex: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

.nav-links a {
  display: inline-block;
  padding: 6px 10px;
  border-radius: var(--radius);
  font-family: var(--font-data);
  font-size: 0.82rem;
  letter-spacing: 0.02em;
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover {
  color: var(--ink);
}
.nav-links a[aria-current="page"] {
  color: var(--ink);
  border-bottom-color: var(--pulse);
}

.nav-toggle {
  display: none;
}

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: none;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 8px 10px;
    font-family: var(--font-data);
    font-size: 0.78rem;
  }
  .nav-links {
    display: none;
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding-top: 8px;
  }
  .nav-links.is-open { display: flex; }
  .nav-links a { width: 100%; padding: 10px 6px; border-bottom: 1px solid var(--line-soft); border-radius: 0; }
  .nav-links a[aria-current="page"] { border-bottom-color: var(--pulse); }
  .nav { flex-wrap: wrap; }
}

.site-footer {
  border-top: 1px solid var(--line);
  margin-top: clamp(56px, 10vw, 120px);
  background: var(--ink);
  color: #cdd3de;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 32px;
  padding-block: 48px;
}

@media (max-width: 720px) {
  .footer-grid { grid-template-columns: 1fr; }
}

.site-footer h4 {
  color: #fff;
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.site-footer a { color: #b9c2d1; text-decoration: none; }
.site-footer a:hover { color: #fff; text-decoration: underline; }

.footer-links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 0.9rem;
}

.footer-bottom {
  border-top: 1px solid #262d3a;
  padding-block: 16px;
  font-family: var(--font-data);
  font-size: 0.75rem;
  color: #7c869a;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

/* generic page grids */
.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

@media (max-width: 860px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.page-hero {
  padding-block: clamp(40px, 8vw, 72px) clamp(24px, 4vw, 40px);
  border-bottom: 1px solid var(--line);
}