/* Design system, part 3 of 7: site header, mobile menu and footer (public and signed-in pages). */

.sitebar {
  position: sticky;
  top: 0;
  z-index: 40;
  background: color-mix(in srgb, var(--bg) 84%, transparent);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}

.sitebar-inner {
  display: flex;
  align-items: center;
  gap: 24px;
  max-width: var(--maxw);
  min-height: 64px;
  margin: 0 auto;
  padding: 0 24px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;
  white-space: nowrap;
}

.brand .by {
  color: var(--text-dim);
  font-weight: 500;
}

.mark {
  display: block;
  flex: none;
  width: 30px;
  height: 30px;
}

.marknav {
  display: flex;
  flex: 1;
  gap: 2px;
  align-items: center;
}

.marknav a {
  padding: 6px 10px;
  border-radius: 6px;
  color: var(--text-dim);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
}

.marknav a:hover {
  background: var(--surface-2);
  color: var(--text);
}

.marknav a[aria-current="page"] {
  color: var(--text);
  font-weight: 650;
}

.sitebar-cta {
  display: flex;
  gap: 8px;
  align-items: center;
  margin-left: auto;
}

.mnav {
  display: none;
  position: relative;
}

.mnav > summary {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  list-style: none;
  border: 1px solid var(--border-strong);
  border-radius: var(--r);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}

.mnav > summary::-webkit-details-marker {
  display: none;
}

.mnav-list {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 50;
  min-width: 220px;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow-lg);
}

.mnav-list li {
  margin: 0;
}

.mnav-list a {
  display: block;
  padding: 10px 12px;
  border-radius: 6px;
  color: var(--text);
  font-weight: 500;
  text-decoration: none;
}

.mnav-list a:hover {
  background: var(--surface-2);
}

.sitefoot {
  margin-top: 24px;
  background: var(--surface);
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.875rem;
}

.sitefoot-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 1fr));
  gap: 32px;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 48px 24px 32px;
}

.sitefoot .foot-h {
  margin: 0 0 12px;
  color: var(--text);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.sitefoot ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.sitefoot li {
  margin: 0 0 8px;
}

.sitefoot a {
  color: var(--text-dim);
  text-decoration: none;
}

.sitefoot a:hover {
  color: var(--text);
  text-decoration: underline;
}

.sitefoot p {
  max-width: 46ch;
  margin: 12px 0 0;
}

.sitefoot .brand {
  color: var(--text);
}

.sitefoot-legal {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 32px;
  justify-content: space-between;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 20px 24px 32px;
  border-top: 1px solid var(--border);
  font-size: 0.8125rem;
}

.sitefoot-legal p {
  max-width: 70ch;
  margin: 0;
}

@media (max-width: 860px) {
  .marknav:not(.app) {
    display: none;
  }
  .mnav {
    display: block;
  }
  .sitefoot-inner {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .foot-brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .sitebar-inner {
    flex-wrap: wrap;
    gap: 12px;
    padding: 0 16px;
  }
  .marknav.app {
    order: 3;
    flex-basis: 100%;
    margin: -8px -10px 6px;
  }
  .sitebar .brand .by {
    display: none;
  }
  .sitefoot-inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
    padding: 40px 16px 24px;
  }
  .sitefoot-legal {
    padding: 20px 16px 28px;
  }
}

@media (max-width: 400px) {
  .brand {
    gap: 8px;
    font-size: 0.9375rem;
  }
  .mark {
    width: 28px;
    height: 28px;
  }
  .sitebar-cta .button.small {
    padding: 5px 10px;
    font-size: 0.8125rem;
  }
}