/* ==========================================================================
   Minimal / typographic theme
   - One centered serif column, cream paper, content-first
   - Light/dark toggle via html[data-theme]
   ========================================================================== */

:root,
html[data-theme="light"] {
  --bg: #faf8f3;
  --bg-soft: #f0ede4;
  --txt: #26241f;
  --muted: #82796a;
  --line: #e5e0d4;
  --accent: #9a4d2e;
  --accent-soft: rgba(154, 77, 46, 0.09);
  --code-2: #7a5a2e;

  --hl-red: #a8412a;
  --hl-green: #5b6e2f;
  --hl-yellow: #8a6a26;
  --hl-blue: #3a5e8c;
  --hl-cyan: #2f6e6e;
  --hl-magenta: #7a4d7a;
  --hl-comment: #a89c87;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1b1a17;
    --bg-soft: #242219;
    --txt: #e9e3d6;
    --muted: #9c917e;
    --line: #322f27;
    --accent: #e0a07a;
    --accent-soft: rgba(224, 160, 122, 0.12);
    --code-2: #d8b483;

    --hl-red: #e08a6f;
    --hl-green: #a8c06a;
    --hl-yellow: #e0c074;
    --hl-blue: #8fb0d8;
    --hl-cyan: #82c0c0;
    --hl-magenta: #c89ec8;
    --hl-comment: #6b6354;
  }
}

html[data-theme="dark"] {
  --bg: #1b1a17;
  --bg-soft: #242219;
  --txt: #e9e3d6;
  --muted: #9c917e;
  --line: #322f27;
  --accent: #e0a07a;
  --accent-soft: rgba(224, 160, 122, 0.12);
  --code-2: #d8b483;

  --hl-red: #e08a6f;
  --hl-green: #a8c06a;
  --hl-yellow: #e0c074;
  --hl-blue: #8fb0d8;
  --hl-cyan: #82c0c0;
  --hl-magenta: #c89ec8;
  --hl-comment: #6b6354;
}

:root {
  --b-txt: var(--txt);
  --b-bg-1: var(--bg);
  --b-bg-2: var(--bg-soft);
  --b-line: var(--line);
  --b-link: var(--accent);
  --b-focus: var(--accent);
  --b-font-main: Charter, "Iowan Old Style", "Palatino Linotype", Palatino,
    Georgia, "Times New Roman", serif;
  --b-font-mono: "SFMono-Regular", ui-monospace, Menlo, Consolas, monospace;
}

/* --- Base layout ---------------------------------------------------------- */

html { scroll-behavior: smooth; }

body {
  max-width: 40rem;
  margin: 0 auto;
  padding: 4rem 1.5rem 6rem;
  background: var(--bg);
  color: var(--txt);
  font-family: var(--b-font-main);
  font-size: 1.075rem;
  line-height: 1.78;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection { background: var(--accent-soft); }

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 2px;
}

/* --- Header --------------------------------------------------------------- */

.site-header {
  margin-bottom: 4rem;
  text-align: center;
}

.site-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  position: relative;
}

.site-brand {
  font-family: var(--b-font-main);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--txt);
  text-decoration: none;
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
}

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

.site-prompt { font-size: 1.5rem; }

.site-tagline {
  font-family: var(--b-font-main);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--muted);
  margin: 0.6rem 0 0;
}
.site-tagline::before { content: ""; }

/* Theme toggle, parked top-right */
.theme-toggle {
  position: absolute;
  right: 0;
  top: 0.4rem;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  width: 2.1rem;
  height: 2.1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  color: var(--muted);
  cursor: pointer;
  padding: 0;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); }

.theme-icon { display: none; line-height: 1; }
.theme-icon-dark { display: inline; }
.theme-icon-light { display: none; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-icon-dark { display: none; }
  :root:not([data-theme="light"]) .theme-icon-light { display: inline; }
}
html[data-theme="dark"] .theme-icon-dark { display: none; }
html[data-theme="dark"] .theme-icon-light { display: inline; }
html[data-theme="light"] .theme-icon-dark { display: inline; }
html[data-theme="light"] .theme-icon-light { display: none; }

/* --- Navigation ----------------------------------------------------------- */

.site-header nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 1.75rem;
  font-size: 0.95rem;
  font-variant: small-caps;
  letter-spacing: 0.04em;
}
.site-header nav a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s ease;
}
.site-header nav a:hover { color: var(--accent); }
.site-header nav a[aria-current="true"] {
  color: var(--txt);
  border-bottom: 1px solid var(--accent);
}

/* --- Home: posts list ----------------------------------------------------- */

.all-posts { display: flex; flex-direction: column; gap: 3rem; }
.year-section { display: flex; flex-direction: column; gap: 0.75rem; }

.year-heading {
  font-family: var(--b-font-main);
  font-style: italic;
  font-size: 1rem;
  font-weight: 400;
  color: var(--muted);
  margin: 0 0 0.5rem;
  border: 0;
  padding: 0;
}

.posts-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.post-row { padding: 0; border: 0; }

.post-link {
  display: block;
  text-decoration: none;
  color: var(--txt);
}

.post-arrow { display: none; }

.post-title {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  transition: color 0.15s ease;
}
.post-link:hover .post-title { color: var(--accent); }

.post-meta {
  display: block;
  font-family: var(--b-font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  margin-top: 0.2rem;
  letter-spacing: 0.02em;
}

.post-description {
  margin: 0.4rem 0 0;
  color: var(--muted);
  font-size: 1rem;
  line-height: 1.65;
}

/* --- Post page ------------------------------------------------------------ */

.post-back {
  display: inline-block;
  font-family: var(--b-font-mono);
  font-size: 0.8rem;
  color: var(--muted);
  text-decoration: none;
  margin-bottom: 2.5rem;
  transition: color 0.15s ease;
}
.post-back:hover { color: var(--accent); }

.post-head { margin-bottom: 2.75rem; text-align: center; }
.post-head h1 {
  font-size: 2.4rem;
  margin: 0 0 1rem;
  line-height: 1.18;
  letter-spacing: -0.02em;
}

.post-meta-line {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-family: var(--b-font-mono);
  font-size: 0.8rem;
  color: var(--muted);
}
.post-meta-sep { opacity: 0.5; }
.post-tags { display: inline-flex; gap: 0.5rem; margin-left: 0.25rem; }
.post-tag { color: var(--accent); }

.draft-badge {
  display: inline-block;
  font-family: var(--b-font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.2em 0.5em;
  border-radius: 4px;
  color: var(--hl-yellow);
  border: 1px solid var(--hl-yellow);
}

.post p, .post li { line-height: 1.85; }
.post h2, .post h3 { margin-top: 2.75rem; letter-spacing: -0.01em; }
.post img { border-radius: 4px; border: 1px solid var(--line); }
.post blockquote {
  border-left: 3px solid var(--accent);
  color: var(--muted);
  font-style: italic;
}

/* --- Code ----------------------------------------------------------------- */

pre {
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: 6px;
  font-size: 0.84rem;
  line-height: 1.6;
  font-family: var(--b-font-mono);
}
:not(pre) > code {
  background: var(--accent-soft);
  color: var(--code-2);
  border-radius: 4px;
  padding: 0.12em 0.4em;
  font-size: 0.85em;
  font-family: var(--b-font-mono);
}

.hljs-keyword, .hljs-selector-tag, .hljs-section, .hljs-link { color: var(--hl-magenta); }
.hljs-string, .hljs-attribute, .hljs-symbol, .hljs-bullet, .hljs-addition, .hljs-template-tag { color: var(--hl-green); }
.hljs-title, .hljs-name, .hljs-function .hljs-title, .hljs-type { color: var(--hl-blue); }
.hljs-variable, .hljs-template-variable, .hljs-attr, .hljs-property { color: var(--hl-cyan); }
.hljs-number, .hljs-regexp, .hljs-literal { color: var(--hl-yellow); }
.hljs-built_in, .hljs-class .hljs-title, .hljs-params { color: var(--hl-red); }
.hljs-comment, .hljs-quote, .hljs-deletion, .hljs-meta { color: var(--hl-comment); font-style: italic; }

/* --- Footer --------------------------------------------------------------- */

.site-footer {
  margin-top: 6rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--line);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-family: var(--b-font-mono);
  font-size: 0.78rem;
  color: var(--muted);
}
.footer-links { display: flex; gap: 1.25rem; }
.footer-links a { color: var(--muted); text-decoration: none; }
.footer-links a:hover { color: var(--accent); }

/* --- Responsive ----------------------------------------------------------- */

@media (max-width: 540px) {
  body { padding: 2.5rem 1.25rem 4rem; }
  .post-head h1 { font-size: 1.9rem; }
}