/* Ayu Light / Ayu Dark, matching the Shiki themes in astro.config.ts. */
:root {
  --bg: #fcfcfc;
  --surface: #f3f4f5;
  --fg: #5c6166;
  --heading: #33373b;
  --muted: #737d8c;
  --border: #6b7d8f26;
  --accent: #f29718;
  --link: #2c8ad4;
  --mark: #ffaa3326;

  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0d1017;
    --surface: #10141c;
    --fg: #bfbdb6;
    --heading: #e6e1cf;
    --muted: #8a91a0;
    --border: #1b1f29;
    --accent: #e6b450;
    --link: #59c2ff;
    --mark: #e6b45026;
    color-scheme: dark;
  }
}

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

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

body {
  margin: 0 auto;
  max-width: 44rem;
  padding: 0 1rem;
  background: var(--bg);
  color: var(--fg);
  font: 1.0625rem/1.7 var(--sans);
  overflow-wrap: break-word;
}

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

a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.2em;
}

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

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

h1,
h2,
h3,
h4 {
  color: var(--heading);
  line-height: 1.25;
  text-wrap: balance;
}

h1 {
  font-size: 2rem;
  margin: 0 0 0.5rem;
}

.muted {
  color: var(--muted);
}

.skip {
  position: absolute;
  left: -999px;
}

.skip:focus {
  left: 1rem;
  top: 1rem;
  background: var(--bg);
  padding: 0.25rem 0.5rem;
}

/* Header and footer */
.site-header,
.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.5rem;
  align-items: baseline;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 0.9rem;
}

.site-header {
  padding: 2rem 0 1rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}

.site-header nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
}

.site-header a,
.site-footer a {
  color: var(--muted);
  text-decoration: none;
}

.site-header a:hover,
.site-footer a:hover,
.site-header a[aria-current="page"] {
  color: var(--accent);
}

.site-header .logo {
  color: var(--heading);
  font-weight: 700;
  font-size: 1.1rem;
}

.logo span {
  color: var(--accent);
}

.site-footer {
  margin-top: 4rem;
  padding: 1.5rem 0 2.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
}

/* Post lists */
.intro {
  margin-bottom: 2.5rem;
}

.intro p:first-child {
  font-size: 1.15rem;
  color: var(--heading);
}

.year h2 {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--accent);
  margin: 2rem 0 0.5rem;
}

.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.post-list li {
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 1rem;
  padding: 0.6rem 0;
}

.post-list time {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  padding-top: 0.2rem;
}

.post-list a {
  color: var(--heading);
  font-weight: 600;
  text-decoration: none;
}

.post-list a:hover {
  color: var(--accent);
}

.post-list p {
  margin: 0.1rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* Post header */
.post-header {
  margin-bottom: 2rem;
}

.meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0 1rem;
  margin: 0;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
}

.draft {
  color: var(--accent);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0.75rem 0 0;
  font-family: var(--mono);
  font-size: 0.85rem;
}

.tags a {
  display: inline-block;
  padding: 0.1rem 0.5rem;
  border-radius: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--fg);
  text-decoration: none;
}

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

.tags-large {
  font-size: 1rem;
  gap: 0.75rem 1.25rem;
}

.back {
  margin-top: 3rem;
  font-family: var(--mono);
  font-size: 0.9rem;
}

/* Rendered Markdown */
.prose > :first-child {
  margin-top: 0;
}

.prose h1 {
  font-size: 1.6rem;
  margin: 2.5rem 0 0.75rem;
}

.prose h2 {
  font-size: 1.35rem;
  margin: 2.25rem 0 0.5rem;
}

.prose h3 {
  font-size: 1.15rem;
  margin: 1.75rem 0 0.5rem;
}

.prose img {
  display: block;
  max-width: 100%;
  height: auto;
  margin: 1.5rem auto;
  padding: 1rem;
  border-radius: 6px;
  /* Diagrams are drawn for a light page; keep them legible in dark mode. */
  background: #fcfcfc;
}

.prose blockquote {
  margin: 1.5rem 0;
  padding: 0.25rem 1rem;
  border-left: 3px solid var(--accent);
  background: var(--surface);
  border-radius: 0 6px 6px 0;
}

.prose hr {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}

.prose table {
  display: block;
  overflow-x: auto;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.prose th,
.prose td {
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--border);
}

.prose th {
  background: var(--surface);
  color: var(--heading);
}

code,
pre,
kbd {
  font-family: var(--mono);
  font-size: 0.875rem;
}

:not(pre) > code {
  padding: 0.1em 0.35em;
  border-radius: 4px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--heading);
}

pre,
pre.astro-code {
  position: relative;
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  line-height: 1.55;
  overflow-x: auto;
  background: var(--surface) !important;
}

pre.astro-code,
.astro-code span {
  color: var(--shiki-light);
}

@media (prefers-color-scheme: dark) {
  pre.astro-code,
  .astro-code span {
    color: var(--shiki-dark);
  }
}

pre.astro-code[data-language]:not([data-language="plaintext"]) {
  padding-top: 1.75rem;
}

pre.astro-code[data-language]:not([data-language="plaintext"])::before {
  content: attr(data-language);
  position: absolute;
  top: 0.35rem;
  right: 0.6rem;
  font-size: 0.7rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.65rem;
  }

  .post-list li {
    grid-template-columns: 1fr;
    gap: 0;
  }

  pre.astro-code {
    margin-inline: -1rem;
    border-radius: 0;
    border-inline: 0;
  }
}