/* =============================================================================
 * layout.css
 * Header, nav, footer, page scaffolding. Loaded after base.css.
 * ========================================================================== */

/* Containers ---------------------------------------------------------------- */

.wrap {
  width: 100%;
  max-width: var(--measure-wide);
  margin-inline: auto;
  padding-inline: var(--sp-6);
}

@media (min-width: 48rem) {
  .wrap { padding-inline: var(--sp-8); }
}

.section {
  padding-block: var(--sp-16);
}

.section--tight {
  padding-block: var(--sp-12);
}

.section--hero {
  padding-block: var(--sp-24) var(--sp-16);
}

.section--dark {
  background: var(--c31-invert-bg);
  color: var(--c31-invert-fg);
}

.section--dark h1,
.section--dark h2,
.section--dark h3 {
  color: var(--c31-invert-fg);
}

.section--alt {
  background: var(--c31-paper-alt);
}

/* Site header --------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  background: var(--c31-paper);
  border-bottom: var(--rule-weight) solid var(--c31-rule);
  z-index: 20;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-6);
  padding-block: var(--sp-4);
}

.site-header__brand {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  text-decoration: none;
  color: var(--c31-navy);
  font-family: var(--ff-display);
  font-weight: 600;
  font-size: 1.0625rem;
  letter-spacing: 0.01em;
}

.site-header__brand img {
  height: 32px;
  width: auto;
}

/* Primary nav --------------------------------------------------------------- */

.nav-primary__list {
  display: none;
  gap: var(--sp-6);
  align-items: center;
}

.nav-primary__list a {
  color: var(--c31-ink);
  text-decoration: none;
  font-size: 0.9375rem;
}

.nav-primary__list a:hover,
.nav-primary__list a[aria-current="page"] {
  color: var(--c31-accent);
}

.nav-primary__cta {
  display: inline-block;
  padding: var(--sp-2) var(--sp-4);
  border: 1px solid var(--c31-navy);
  color: var(--c31-navy) !important;
  text-decoration: none !important;
}

.nav-primary__cta:hover {
  background: var(--c31-navy);
  color: var(--c31-paper) !important;
}

/* Mobile nav toggle --------------------------------------------------------- */

.nav-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  border: 1px solid var(--c31-rule);
  color: var(--c31-navy);
  font-size: 0.875rem;
}

.nav-toggle__icon {
  width: 18px;
  height: 2px;
  background: currentColor;
  position: relative;
}

.nav-toggle__icon::before,
.nav-toggle__icon::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: currentColor;
}

.nav-toggle__icon::before { top: -6px; }
.nav-toggle__icon::after  { top:  6px; }

.nav-primary[data-open="true"] .nav-toggle__icon {
  background: transparent;
}

.nav-primary[data-open="true"] .nav-toggle__icon::before { top: 0; transform: rotate(45deg); }
.nav-primary[data-open="true"] .nav-toggle__icon::after  { top: 0; transform: rotate(-45deg); }

@media (min-width: 48rem) {
  .nav-toggle { display: none; }
  .nav-primary__list {
    display: inline-flex;
  }
}

/* Mobile nav panel ---------------------------------------------------------- */

@media (max-width: 47.9375rem) {
  .nav-primary__list {
    display: none;
    position: fixed;
    inset: 64px 0 0 0;
    background: var(--c31-paper);
    flex-direction: column;
    align-items: stretch;
    padding: var(--sp-6);
    border-top: var(--rule-weight) solid var(--c31-rule);
  }

  .nav-primary[data-open="true"] .nav-primary__list {
    display: flex;
  }

  .nav-primary__list a {
    display: block;
    padding: var(--sp-3) 0;
    border-bottom: var(--rule-weight) solid var(--c31-rule);
    font-size: 1.0625rem;
  }
}

/* Site footer --------------------------------------------------------------- */

.site-footer {
  background: var(--c31-invert-bg);
  color: var(--c31-invert-fg);
  padding-block: var(--sp-16) var(--sp-8);
  margin-top: var(--sp-24);
}

.site-footer a {
  color: var(--c31-invert-fg);
}

.site-footer a:hover {
  color: var(--c31-invert-fg);
  opacity: 0.75;
}

.site-footer__grid {
  display: grid;
  gap: var(--sp-8);
  grid-template-columns: 1fr;
}

@media (min-width: 48rem) {
  .site-footer__grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }
}

.site-footer__brand {
  max-width: 20rem;
  color: var(--c31-invert-fg);
  opacity: 0.85;
}

.site-footer h2 {
  font-family: var(--ff-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c31-invert-fg);
  opacity: 0.65;
  margin-bottom: var(--sp-3);
}

.site-footer__list li {
  padding-block: var(--sp-1);
}

.site-footer__legal {
  margin-top: var(--sp-12);
  padding-top: var(--sp-6);
  border-top: 1px solid rgba(251, 250, 247, 0.15);
  font-size: 0.8125rem;
  opacity: 0.7;
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-6);
  justify-content: space-between;
}

/* Buttons ------------------------------------------------------------------- */

.btn {
  display: inline-block;
  padding: var(--sp-3) var(--sp-6);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-1);
  transition: background var(--dur-1) var(--ease-1), color var(--dur-1) var(--ease-1), border-color var(--dur-1) var(--ease-1);
  cursor: pointer;
}

.btn--primary {
  background: var(--c31-accent);
  color: var(--c31-on-accent);
  border-color: var(--c31-accent);
}

.btn--primary:hover {
  background: var(--c31-accent-hover);
  border-color: var(--c31-accent-hover);
  color: var(--c31-on-accent);
}

.btn--ghost {
  background: transparent;
  color: var(--c31-navy);
  border-color: var(--c31-navy);
}

.btn--ghost:hover {
  background: var(--c31-navy);
  color: var(--c31-paper);
}

.section--dark .btn--ghost {
  color: var(--c31-invert-fg);
  border-color: var(--c31-invert-fg);
}

.section--dark .btn--ghost:hover {
  background: var(--c31-invert-fg);
  color: var(--c31-invert-bg);
}

/* Utility ------------------------------------------------------------------- */

.eyebrow {
  font-family: var(--ff-body);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c31-accent);
  margin-bottom: var(--sp-4);
  display: block;
}

.section--dark .eyebrow {
  color: var(--c31-invert-fg);
  opacity: 0.7;
}

.stack > * + * { margin-top: var(--sp-4); }
.stack-lg > * + * { margin-top: var(--sp-8); }

.grid-2 {
  display: grid;
  gap: var(--sp-12);
  grid-template-columns: 1fr;
}
@media (min-width: 48rem) {
  .grid-2 { grid-template-columns: 1fr 1fr; }
}

.grid-3 {
  display: grid;
  gap: var(--sp-8);
  grid-template-columns: 1fr;
}
@media (min-width: 48rem) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
}