/*
 * Document shell, containers, and focus. Not a page layout.
 */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  color-scheme: dark;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-primary);
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  line-height: var(--lh-body);
  text-rendering: optimizeLegibility;
}

.site-main {
  flex: 1 0 auto;
}

:focus:not(:focus-visible) {
  outline: none;
}

:focus-visible {
  outline: var(--outline-width) solid var(--color-focus);
  outline-offset: var(--outline-offset);
}

::selection {
  background: var(--color-leather-dark);
  color: var(--color-text);
}

img {
  max-width: 100%;
  height: auto;
}

hr {
  border: 0;
  border-top: 1px solid var(--color-border);
  margin: var(--space-6) 0;
}

a {
  color: var(--color-leather-light);
  text-decoration-line: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--color-text);
}

.skip-link {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link:focus,
.skip-link:focus-visible {
  top: var(--space-3);
  left: var(--space-3);
  z-index: 1000;
  width: auto;
  height: auto;
  margin: 0;
  padding: 0.65rem 1rem;
  overflow: visible;
  clip: auto;
  white-space: normal;
  background: var(--color-btn-primary);
  color: var(--color-text);
  border-radius: var(--radius-sm);
  text-decoration: none;
}

.container,
.container-wide {
  width: min(100%, var(--container-max));
  margin-inline: auto;
  padding-inline: var(--container-padding);
}

.container-wide {
  width: min(100%, var(--container-wide-max));
}

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

.section-sm {
  padding-block: var(--section-y-sm);
}

.section-lg {
  padding-block: var(--section-y-lg);
}

.site-header,
.site-footer {
  background: var(--color-bg-soft);
}

.site-header {
  border-bottom: 1px solid var(--color-border);
  padding-block: var(--space-4);
}

.site-footer {
  border-top: 1px solid var(--color-border);
  padding-block: var(--space-4);
}

.site-title {
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  line-height: var(--lh-heading);
}

.site-title a {
  color: var(--color-text);
  text-decoration: none;
}

.site-title a:hover {
  color: var(--color-leather-light);
}

.site-main article + article {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
}

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