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

* {
  margin: 0;
}

img,
svg {
  display: block;
  max-width: 100%;
}

::selection {
  background: var(--color-selection);
}

html {
  color-scheme: light dark;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-serif);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  font-optical-sizing: auto;
  -webkit-font-smoothing: antialiased;
}

header,
main,
footer {
  max-width: var(--measure);
  margin-inline: auto;
  padding-inline: var(--space-s);
}

header {
  padding-block-start: var(--space-l);
  padding-block-end: var(--space-m);
  text-align: center;
}

main {
  padding-block-end: var(--space-xl);
}

main > * + * {
  margin-block-start: var(--space-s);
}

footer {
  padding-block-end: var(--space-l);
  text-align: center;
}

header nav a,
footer p,
.post-back-link a {
  font-size: var(--font-size-nav);
  font-weight: var(--weight-nav);
  letter-spacing: var(--tracking-nav);
  text-transform: uppercase;
  color: var(--color-text-muted);
}

header nav a,
.post-back-link a {
  text-decoration: none;
}

header nav a:hover,
header nav a:focus-visible,
.post-back-link a:hover,
.post-back-link a:focus-visible {
  color: var(--color-text);
}

header nav {
  display: flex;
  justify-content: center;
  gap: var(--space-s);
}

header nav a[aria-current="page"] {
  color: var(--color-text);
}

.post-list {
  list-style: none;
}

.post-list-item {
  display: flex;
  justify-content: space-between;
  gap: var(--space-s);
}

.post-list-item + .post-list-item {
  margin-block-start: var(--space-2xs);
}

.post-list-date,
.post-meta {
  color: var(--color-text-muted);
  white-space: nowrap;
}

h1 + .post-meta {
  margin-block-start: var(--space-3xs);
}

.post-back-link {
  margin-block-start: var(--space-m);
}

.project-list {
  list-style: none;
}

.project-list-item + .project-list-item {
  margin-block-start: var(--space-m);
}

h1,
h2,
h3 {
  font-weight: var(--weight-heading);
  line-height: var(--line-height-heading);
}

h1 {
  font-size: clamp(1.75rem, 1.4rem + 1.5vw, 2.5rem);
}

h2 {
  font-size: clamp(1.375rem, 1.2rem + 0.75vw, 1.75rem);
}

h3 {
  font-size: 1.25rem;
}

p + h2,
p + h3,
ul + h2,
ul + h3 {
  margin-block-start: var(--space-m);
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover,
a:focus-visible {
  text-decoration: underline;
}

:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

.theme-toggle {
  position: fixed;
  top: var(--space-s);
  right: var(--space-s);
  padding: var(--space-2xs);
  border: none;
  background: none;
  color: var(--color-text-muted);
  cursor: pointer;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  color: var(--color-text);
}

.theme-toggle .icon-moon {
  display: none;
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]) .theme-toggle .icon-sun {
    display: none;
  }

  html:not([data-theme="light"]) .theme-toggle .icon-moon {
    display: block;
  }
}

html[data-theme="dark"] .theme-toggle .icon-sun {
  display: none;
}

html[data-theme="dark"] .theme-toggle .icon-moon {
  display: block;
}

html[data-theme="light"] .theme-toggle .icon-sun {
  display: block;
}

html[data-theme="light"] .theme-toggle .icon-moon {
  display: none;
}