@font-face {
  font-family: "PT Sans";
  src: url("../fonts/PTSans-Regular.woff") format("woff");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "PT Sans";
  src: url("../fonts/PTSans-Bold.woff") format("woff");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

:root {
  color-scheme: light dark;
  --ink: #20242b;
  --paper: #fcfcfb;
  --muted: #5c6470;
  --line: #d6dbe1;
  --accent: #075e85;
  --accent-strong: #034664;
  --header: #152e3d;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font: 1.1rem/1.65 "PT Sans", system-ui, sans-serif;
}

a {
  color: var(--accent);
  text-decoration-thickness: 0.09em;
  text-underline-offset: 0.14em;
}

a:hover {
  color: var(--accent-strong);
}

a:focus-visible {
  outline: 0.2rem solid #e35d2f;
  outline-offset: 0.2rem;
  border-radius: 0.1rem;
}

.site-header {
  color: #eef5f7;
  background: var(--header);
  border-bottom: 0.35rem solid #e47a45;
}

.site-header__inner {
  max-width: 74rem;
  margin: 0 auto;
  padding: 1.4rem clamp(1rem, 4vw, 3rem);
}

.site-title {
  display: inline-block;
  color: #fff;
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  text-decoration: none;
}

.site-description {
  margin: 0.15rem 0 1.1rem;
  color: #c9d8df;
}

.nav-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.1rem;
  margin: 0.4rem 0;
  padding: 0;
  list-style: none;
}

.nav-list a {
  color: #fff;
}

.nav-list--social {
  font-size: 0.95rem;
}

.content {
  width: min(100% - 2rem, 50rem);
  margin: 0 auto;
  padding: clamp(2rem, 6vw, 4.5rem) 0;
}

.post,
.post-summary {
  max-width: 46rem;
}

.post-summary {
  padding-bottom: 2.2rem;
  margin-bottom: 2.3rem;
  border-bottom: 1px solid var(--line);
}

h1,
h2,
h3,
h4 {
  color: #17232b;
  line-height: 1.2;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3rem);
}

h2 {
  margin: 0;
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.post-summary h1 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.post-summary h1 a {
  text-decoration: none;
}

.post-summary h1 a:hover {
  text-decoration: underline;
}

.post-date {
  margin: 0.45rem 0 1.5rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.post-content > :first-child {
  margin-top: 0;
}

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

pre {
  padding: 1rem;
  overflow-x: auto;
  background: #eef2f4;
  border: 1px solid var(--line);
}

blockquote {
  margin-left: 0;
  padding-left: 1rem;
  color: #394954;
  border-left: 0.3rem solid #79a9bd;
}

.pagination,
.post-navigation {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
}

.post-navigation {
  flex-direction: column;
}

@media (prefers-color-scheme: dark) {
  :root {
    --ink: #edf1f3;
    --paper: #172027;
    --muted: #bfccd3;
    --line: #4a5962;
    --accent: #70c9ef;
    --accent-strong: #ace1f3;
    --header: #0e181e;
  }

  h1,
  h2,
  h3,
  h4 {
    color: #fff;
  }

  pre {
    background: #10171c;
  }

  blockquote {
    color: #d0dce1;
  }
}

@media (min-width: 72rem) {
  .site-header {
    position: fixed;
    top: 0;
    bottom: 0;
    width: 22rem;
    border-right: 0.35rem solid #e47a45;
    border-bottom: 0;
  }

  .site-header__inner {
    padding: 3rem 2rem;
  }

  .content {
    margin-right: auto;
    margin-left: max(25rem, calc((100vw - 50rem) / 2 + 11rem));
  }

  .nav-list {
    display: block;
  }

  .nav-list li {
    margin: 0.55rem 0;
  }
}