/**
 * LAYOUT — containers, header/nav, footer, page grid.
 */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--space-md);
}

.container--narrow {
  max-width: var(--container-narrow);
}

/* ================= HEADER ================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(8, 8, 10, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-graphite);
}

.site-header__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-sm);
}

.brand-mark {
  display: flex;
  align-items: center;
  gap: var(--space-2xs);
}

.brand-mark img {
  height: 34px;
  width: auto;
}

.brand-mark__text {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  letter-spacing: var(--ls-wide);
  color: var(--color-ink);
  white-space: nowrap;
}

.primary-nav__list {
  display: flex;
  gap: var(--space-lg);
}

.primary-nav__link {
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--color-ash);
  padding-block: var(--space-2xs);
  border-bottom: 1px solid transparent;
  transition: color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}

.primary-nav__link:hover,
.primary-nav__link[aria-current="page"] {
  color: var(--color-ink);
  border-bottom-color: var(--color-ember-bright);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-graphite);
  border-radius: var(--radius-sm);
  padding: var(--space-2xs) var(--space-xs);
  color: var(--color-ink);
}

.nav-toggle__bars {
  display: block;
  width: 20px;
  height: 1px;
  background: var(--color-ink);
  position: relative;
}
.nav-toggle__bars::before,
.nav-toggle__bars::after {
  content: "";
  position: absolute;
  left: 0;
  width: 20px;
  height: 1px;
  background: var(--color-ink);
  transition: transform var(--dur-fast) var(--ease-out);
}
.nav-toggle__bars::before { top: -6px; }
.nav-toggle__bars::after { top: 6px; }

@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .primary-nav {
    position: fixed;
    inset: 0;
    top: 0;
    background: var(--color-void);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transform: translateY(-100%);
    opacity: 0;
    transition: transform var(--dur-med) var(--ease-out), opacity var(--dur-med) var(--ease-out);
    z-index: 99;
  }

  .primary-nav.is-open {
    transform: translateY(0);
    opacity: 1;
  }

  .primary-nav__list {
    flex-direction: column;
    align-items: center;
    gap: var(--space-lg);
  }

  .primary-nav__link {
    font-size: var(--fs-lg);
  }

  body.nav-is-open {
    overflow: hidden;
  }
}

/* ================= FOOTER ================= */
.site-footer {
  border-top: 1px solid var(--color-graphite);
  margin-top: var(--space-3xl);
  padding-block: var(--space-2xl) var(--space-lg);
  background: linear-gradient(180deg, transparent, rgba(138, 31, 43, 0.03));
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-lg);
}

.site-footer__brand p {
  max-width: 32ch;
  font-size: var(--fs-sm);
  margin-top: var(--space-sm);
}

.site-footer__social {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm) var(--space-md);
  margin-top: var(--space-md);
}

.site-footer__social-link {
  font-size: var(--fs-2xs);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: var(--color-ash);
  border-bottom: 1px solid transparent;
  padding-bottom: 2px;
  transition: color var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}

.site-footer__social-link:hover {
  color: var(--color-ink);
  border-bottom-color: var(--color-ember-bright);
}

.site-footer__heading {
  font-family: var(--font-body);
  font-size: var(--fs-2xs);
  letter-spacing: var(--ls-widest);
  text-transform: uppercase;
  color: var(--color-smoke);
  margin-bottom: var(--space-sm);
}

.site-footer__list li + li {
  margin-top: var(--space-xs);
}

.site-footer__list a {
  font-size: var(--fs-sm);
  color: var(--color-ash);
  transition: color var(--dur-fast) var(--ease-out);
}

.site-footer__list a:hover {
  color: var(--color-ink);
}

.site-footer__bottom {
  margin-top: var(--space-2xl);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-graphite);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.site-footer__legal {
  font-size: var(--fs-2xs);
  color: var(--color-smoke);
  letter-spacing: var(--ls-wide);
}

@media (max-width: 760px) {
  .site-footer__grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* ================= SECTIONS ================= */
.section {
  padding-block: var(--space-2xl);
}

.section--tight {
  padding-block: var(--space-xl);
}

main {
  display: block;
}

main:focus {
  outline: none;
}