/* Company 31 — layout */

.container {
  inline-size: min(100% - 2rem, var(--c31-container));
  margin-inline: auto;
}
.container-narrow {
  inline-size: min(100% - 2rem, var(--c31-container-narrow));
  margin-inline: auto;
}

main { flex: 1; }

section { padding-block: var(--c31-space-9); }
section.tight { padding-block: var(--c31-space-7); }

@media (max-inline-size: 720px) {
  section { padding-block: var(--c31-space-7); }
}

.site-header {
  position: sticky;
  inset-block-start: 0;
  z-index: 40;
  background-color: color-mix(in srgb, var(--c31-bg) 88%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-block-end: 1px solid var(--c31-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--c31-space-5);
  padding-block: var(--c31-space-4);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--c31-space-3);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--c31-text);
}
.brand__logo {
  inline-size: 32px;
  block-size: 32px;
  border-radius: var(--c31-radius-sm);
}
.brand__name { font-size: var(--c31-fs-md); }

.primary-nav {
  margin-inline-start: auto;
  display: flex;
  align-items: center;
  gap: var(--c31-space-5);
}
.primary-nav__list {
  display: flex;
  gap: var(--c31-space-5);
}
.primary-nav a {
  color: var(--c31-text-soft);
  font-size: var(--c31-fs-sm);
  font-weight: 500;
  padding-block: var(--c31-space-2);
  transition: color var(--c31-dur-fast) var(--c31-ease);
}
.primary-nav a:hover { color: var(--c31-text); }
.primary-nav a[aria-current="page"] { color: var(--c31-text); }

.site-header__actions {
  display: inline-flex;
  align-items: center;
  gap: var(--c31-space-3);
}

.nav-toggle {
  display: none;
  inline-size: 42px;
  block-size: 42px;
  border-radius: var(--c31-radius-sm);
  align-items: center;
  justify-content: center;
  color: var(--c31-text);
}
.nav-toggle:hover { background: var(--c31-bg-muted); }
.nav-toggle__icon {
  position: relative;
  inline-size: 20px;
  block-size: 2px;
  background: currentColor;
  transition: background var(--c31-dur) var(--c31-ease);
}
.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  block-size: 2px;
  background: currentColor;
  transition: transform var(--c31-dur) var(--c31-ease);
}
.nav-toggle__icon::before { inset-block-start: -6px; }
.nav-toggle__icon::after  { inset-block-start: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__icon::after  { transform: translateY(-6px) rotate(-45deg); }

@media (max-inline-size: 820px) {
  .nav-toggle { display: inline-flex; }
  .primary-nav {
    position: absolute;
    inset-inline: 0;
    inset-block-start: 100%;
    background: var(--c31-bg);
    border-block-end: 1px solid var(--c31-border);
    padding: var(--c31-space-5) var(--c31-space-5) var(--c31-space-6);
    flex-direction: column;
    align-items: stretch;
    gap: var(--c31-space-4);
    box-shadow: var(--c31-shadow-lift);
    display: none;
  }
  .primary-nav.is-open { display: flex; }
  .primary-nav__list { flex-direction: column; gap: var(--c31-space-2); }
  .primary-nav a { font-size: var(--c31-fs-md); padding-block: var(--c31-space-3); }
}

.site-footer {
  border-block-start: 1px solid var(--c31-border);
  background-color: var(--c31-bg-subtle);
  padding-block: var(--c31-space-7);
  margin-block-start: var(--c31-space-9);
}
.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--c31-space-5);
  align-items: start;
}
.site-footer__primary { display: flex; flex-direction: column; gap: var(--c31-space-3); }
.site-footer__note { color: var(--c31-text-muted); font-size: var(--c31-fs-sm); max-inline-size: 44ch; }
.site-footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--c31-space-5);
  justify-content: flex-end;
}
.site-footer__links a, .site-footer__links button {
  color: var(--c31-text-soft);
  font-size: var(--c31-fs-sm);
  font-weight: 500;
}
.site-footer__links a:hover, .site-footer__links button:hover { color: var(--c31-text); }
.site-footer__meta {
  margin-block-start: var(--c31-space-6);
  color: var(--c31-text-muted);
  font-size: var(--c31-fs-xs);
  display: flex;
  justify-content: space-between;
  gap: var(--c31-space-4);
}

@media (max-inline-size: 720px) {
  .site-footer__grid { grid-template-columns: 1fr; }
  .site-footer__links { justify-content: flex-start; }
  .site-footer__meta { flex-direction: column; }
}

/* Grid layouts */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--c31-space-5);
}
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--c31-space-6);
}
@media (max-inline-size: 900px) { .grid-3 { grid-template-columns: 1fr; } }
@media (max-inline-size: 720px) { .grid-2 { grid-template-columns: 1fr; } }

/* Two-column text */
.split {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  gap: var(--c31-space-7);
  align-items: start;
}
@media (max-inline-size: 820px) { .split { grid-template-columns: 1fr; gap: var(--c31-space-5); } }