/* Shared navigation is generated into HTML, so it also works without JavaScript. */
.site-header {
  position: fixed;
  inset: 0 0 auto;
  height: var(--header);
  z-index: 30;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 0 3vw;
  border-bottom: 1px solid var(--line);
  background: var(--ground);
  color: var(--ink);
}
.site-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font: 12px var(--mono);
  letter-spacing: 0.15em;
  text-decoration: none;
  white-space: nowrap;
}
.site-brand i {
  width: 18px;
  height: 18px;
  display: block;
  background: radial-gradient(circle, var(--accent) 1.5px, transparent 2px) 0
    0/6px 6px;
}
.primary-nav {
  display: flex;
  align-items: center;
  gap: 32px;
  margin-left: auto;
}
.primary-nav > a {
  font-size: 12px;
  text-decoration: none;
  color: var(--muted);
  padding: 16px 0;
}
.primary-nav > a[aria-current],
.primary-nav > a[data-active] {
  color: var(--ink);
  box-shadow: inset 0 -1px var(--accent);
}
.site-menu {
  position: relative;
  border: 0;
  padding: 0;
  margin: 0;
}
.site-menu summary {
  list-style: none;
  cursor: pointer;
  font: 11px var(--mono);
  padding: 14px 0 14px 20px;
  color: var(--muted);
}
.site-menu summary::-webkit-details-marker {
  display: none;
}
.site-menu summary::after {
  content: " +";
  color: var(--accent);
}
.site-menu[open] summary::after {
  content: " −";
}
.menu-panel {
  position: absolute;
  top: calc(100% + 17px);
  right: -3vw;
  width: min(640px, 100vw);
  background: #151812;
  border: 1px solid var(--line);
  padding: 32px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  box-shadow: 0 20px 50px #0008;
}
.menu-panel strong {
  display: block;
  font: 10px var(--mono);
  color: var(--accent);
  letter-spacing: 0.12em;
  margin-bottom: 16px;
}
.menu-panel a {
  display: block;
  font-size: 12px;
  padding: 9px 0;
  text-decoration: none;
  color: var(--ink);
}
.menu-panel a[aria-current] {
  text-decoration: underline;
  text-decoration-color: var(--accent);
}
.menu-panel a:hover {
  color: var(--accent);
}
.menu-project {
  grid-column: 1/-1;
  border-top: 1px solid var(--line);
  padding-top: 12px;
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.menu-project button {
  margin-left: auto;
  border: 0;
  padding: 9px 0;
  background: none;
  font: 10px var(--mono);
  color: var(--muted);
  min-height: 32px;
}
.menu-project button:hover {
  color: var(--ink);
}
.site-footer {
  border-top: 1px solid var(--line);
  padding: 40px 3vw calc(40px + var(--rail, 0px));
  display: grid;
  grid-template-columns: minmax(0, 1.8fr) repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 32px;
  font: 10px/1.8 var(--mono);
  color: var(--muted);
  position: relative;
}
.site-footer p {
  font: inherit;
  color: inherit;
  max-width: 50ch;
  margin: 0;
}
.site-footer nav {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
}
.site-footer nav strong {
  color: var(--accent);
  font-weight: 400;
  letter-spacing: 0.12em;
  margin-bottom: 8px;
}
.site-footer .footer-purpose {
  margin-top: 12px;
}
.site-footer a {
  text-decoration: none;
}
.site-footer a:hover {
  color: var(--accent);
}
.skip {
  position: fixed;
  left: 16px;
  top: -100px;
  z-index: 50;
  padding: 12px;
  background: var(--ink);
  color: var(--ground);
}
.skip:focus {
  top: 12px;
}
.flock-background {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: -1;
  opacity: 0.25;
}
body {
  isolation: isolate;
}
.site-footer,
.editorial,
.build-hub {
  position: relative;
}
.guide-layout {
  background: #10110fcc;
}
@media (max-width: 760px) {
  .site-header {
    padding: 0 20px;
    gap: 16px;
  }
  .site-brand {
    font-size: 10px;
    letter-spacing: 0.09em;
    gap: 8px;
  }
  .site-brand i {
    width: 12px;
    height: 18px;
  }
  .primary-nav {
    gap: 18px;
  }
  .primary-nav > a {
    font-size: 11px;
  }
  .site-menu summary {
    padding-left: 0;
    font-size: 10px;
  }
  .menu-panel {
    right: -20px;
    top: calc(100% + 9px);
    padding: 24px;
    gap: 16px;
  }
  .menu-panel a {
    font-size: 11px;
  }
  .site-footer {
    padding: 28px 24px calc(28px + var(--rail, 0px));
    display: block;
  }
  .site-footer nav {
    margin-top: 20px;
    gap: 20px;
  }
}
@media (max-width: 440px) {
  .site-brand {
    font-size: 9px;
    letter-spacing: 0.04em;
  }
  .primary-nav {
    gap: 13px;
  }
  .site-header {
    padding: 0 16px;
    gap: 12px;
  }
  .site-brand i {
    display: none;
  }
  .primary-nav > a {
    font-size: 10px;
  }
  .menu-panel {
    right: -16px;
    grid-template-columns: 1fr 1fr;
  }
  .menu-project {
    gap: 16px;
  }
  .menu-project button {
    margin-left: 0;
  }
  .menu-panel > div:nth-child(3) {
    grid-column: 1/-1;
    display: flex;
    flex-wrap: wrap;
    gap: 0 18px;
  }
  .menu-panel > div:nth-child(3) > strong {
    width: 100%;
    margin-bottom: 8px;
  }
}
@media (prefers-reduced-motion: reduce) {
  .flock-background {
    display: none;
  }
}
@media print {
  .site-header,
  .site-footer,
  .flock-background,
  .skip {
    display: none;
  }
}

@media (max-width: 760px) {
  .flock-background {
    opacity: 0.15;
  }
  .menu-panel a {
    min-height: 44px;
  }
}
/* Keep every navigation link reachable as the editorial catalogue grows. */
.menu-panel {
  max-height: calc(100svh - var(--header) - 16px);
  overflow-y: auto;
}