/* Layout: container, header, footer, main, sections */

body {
  display: flex;
  flex-direction: column;
}

.container {
  width: min(100% - 2 * var(--gutter), var(--container));
  margin-inline: auto;
}

/* Header */
.site-header {
  border-bottom: var(--border-width) solid var(--color-border);
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding-block: var(--space-4);
}

.site-brand {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
}

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

/* Navigation (mobile first: stacked, collapsible via js/nav.js) */
.site-nav {
  flex-basis: 100%;
}

.site-nav.is-collapsed {
  display: none;
}

.site-nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  padding: 0;
  list-style: none;
}

.site-nav__link {
  display: block;
  padding-block: var(--space-2);
  color: var(--color-muted);
  text-decoration: none;
}

.site-nav__link:hover {
  color: var(--color-text);
}

.site-nav__link[aria-current="page"] {
  color: var(--color-text);
  font-weight: 600;
}

/* Main */
.site-main {
  flex: 1 0 auto;
  padding-block: var(--space-7);
}

.section + .section {
  margin-top: var(--space-8);
}

.section__header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.page-header {
  margin-bottom: var(--space-6);
}

.page-header__lead {
  max-width: var(--measure);
  margin-top: var(--space-3);
  font-size: var(--text-lg);
  color: var(--color-muted);
}

/* Intro (home) */
.intro__lead {
  max-width: var(--measure);
  margin-top: var(--space-4);
  font-size: var(--text-lg);
  color: var(--color-muted);
}

.intro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

/* Prose (long-form text pages) */
.prose {
  max-width: 100%;
}

.prose > * + * {
  margin-top: var(--space-4);
}

.prose > h2 {
  margin-top: var(--space-7);
}

/* Footer */
.site-footer {
  padding-block: var(--space-6);
  font-size: var(--text-sm);
  color: var(--color-muted);
  border-top: var(--border-width) solid var(--color-border);
}

.site-footer__inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-2) var(--space-5);
}