/* ─── Design tokens ───────────────────────────────────────────────── */
:root {
  --bg:          #0d0d0d;
  --bg-surface:  #141414;
  --bg-raised:   #1a1a1a;
  --border:      #2a2a2a;
  --border-lit:  #3a3a3a;

  --text:        #d4d4d4;
  --text-dim:    #a8a8a8;
  --text-header: #e8e8e8;

  --red:         #cc2200;
  --red-bright:  #ff4433;
  --green:       #22cc44;
  --green-dim:   #2db346;
  --amber:       #e8a020;

  --mono: "JetBrains Mono", "Fira Code", "Cascadia Code", "Courier New", monospace;
  --sans: "Inter", system-ui, -apple-system, sans-serif;

  --radius: 2px;
  --max-w:  860px;
}

/* ─── Reset & base ────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 112.5%; scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 1rem;
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ─── Typography ──────────────────────────────────────────────────── */
h1, h2, h3, h4 {
  color: var(--text-header);
  font-family: var(--sans);
  font-weight: 600;
  line-height: 1.25;
}

h1 { font-size: 1.75rem; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1.15rem; }
h4 { font-size: 1rem; }

p { margin-top: 1rem; }
p:first-child { margin-top: 0; }

a:link    { color: var(--green); text-decoration: none; }
a:visited { color: var(--text-dim); }
a:hover   { color: var(--red-bright); text-decoration: underline; text-underline-offset: 3px; }
a:active  { color: var(--red-bright); }

:focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 3px;
  border-radius: 1px;
}

ul, ol { padding-left: 1.5rem; margin-top: 1rem; }
li { margin-bottom: 0.35rem; }

blockquote {
  border-left: 3px solid var(--green-dim);
  padding: 0.5rem 1rem;
  margin: 1.25rem 0;
  color: var(--text-dim);
}

pre {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green-dim);
  padding: 1rem 1.25rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.5;
  margin: 1.25rem 0;
  border-radius: var(--radius);
}

code {
  font-family: var(--mono);
  font-size: 0.875em;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  padding: 0.1em 0.35em;
  border-radius: var(--radius);
  color: var(--green);
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: inherit;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border);
  margin: 1.25rem 0;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

strong { color: var(--text-header); }

/* ─── Layout ──────────────────────────────────────────────────────── */
.site-wrap {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  width: 100%;
  flex: 1;
}

/* ─── Header ──────────────────────────────────────────────────────── */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 1.75rem 0 1.25rem;
  margin-bottom: 2.5rem;
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
}

.site-header a {
  text-decoration: none;
  display: block;
}

.site-header a:link,
.site-header a:visited { color: inherit; }

.site-title {
  font-family: var(--mono);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-header);
  letter-spacing: -0.01em;
}

.site-title .prompt {
  color: var(--green);
  user-select: none;
}

.site-title .domain {
  color: var(--red-bright);
}

.site-tagline {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text);
  margin-top: 0.25rem;
  letter-spacing: 0.04em;
}

.site-nav {
  margin-top: 1rem;
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.site-nav a {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--text-dim);
  text-decoration: none;
  letter-spacing: 0.04em;
  transition: color 0.15s;
  padding: 0.4rem 0.25rem;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--green); text-decoration: none; }

/* ─── Post list ───────────────────────────────────────────────────── */
.post-list { list-style: none; padding: 0; }

.post-list-item {
  border: 1px solid var(--border);
  border-left: 3px solid var(--border-lit);
  background: var(--bg-surface);
  margin-bottom: 1.5rem;
  transition: border-left-color 0.15s;
}

.post-list-item:hover { border-left-color: var(--red); }

.post-list-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1rem 0;
  flex-wrap: wrap;
}

.post-list-title {
  font-family: var(--mono);
  font-size: 1rem;
  font-weight: 600;
}

.post-list-title a:link { color: var(--green); }
.post-list-title a:visited { color: var(--green); }
.post-list-title a:hover { color: var(--red-bright); text-decoration: none; }

.post-date {
  font-family: var(--mono);
  font-size: 0.875rem;
  color: var(--amber);
  white-space: nowrap;
  flex-shrink: 0;
}

.post-date .prompt { color: var(--green); user-select: none; }

.post-excerpt {
  padding: 0.5rem 1rem 0.75rem;
  font-size: 0.9rem;
  color: var(--text-dim);
  max-width: 72ch;
}

.post-excerpt p { margin-top: 0; }

.read-more {
  font-family: var(--mono);
  font-size: 0.8em;
  white-space: nowrap;
}

.read-more:link,
.read-more:visited { color: var(--green); }
.read-more:hover { color: var(--text-header); text-decoration: none; }

/* ─── Single post ─────────────────────────────────────────────────── */
.post-header {
  margin-bottom: 2rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border);
}

.post-header h1 {
  font-size: 2rem;
  margin-bottom: 0.75rem;
  color: var(--green);
}

.post-meta {
  font-family: var(--mono);
  font-size: 0.875rem;
  color: var(--text-dim);
}

.post-meta .line { display: flex; gap: 0.5em; align-items: baseline; }
.post-meta .prompt { color: var(--green); user-select: none; }
.post-meta .val { color: var(--amber); }

.post-body { max-width: 72ch; }

.post-body h2 { margin-top: 2rem; margin-bottom: 0.5rem; border-bottom: 1px solid var(--border); padding-bottom: 0.35rem; }
.post-body h3 { margin-top: 1.5rem; margin-bottom: 0.4rem; }

.post-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.875rem;
}

.post-nav a {
  padding: 0.4rem 0;
}

.post-nav a:visited { color: var(--text-dim); }

/* ─── Page content ────────────────────────────────────────────────── */
.page-header {
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.page-header h1 { font-size: 1.5rem; }

.page-body { max-width: 72ch; }
.page-body h2 { margin-top: 2rem; margin-bottom: 0.5rem; }
.page-body h3 { margin-top: 1.5rem; }

/* ─── Archive badge ───────────────────────────────────────────────── */
.archive-badge {
  font-family: var(--mono);
  font-size: 0.65rem;
  color: var(--text-dim);
  border: 1px solid var(--border-lit);
  padding: 0.1em 0.4em;
  border-radius: 2px;
  vertical-align: middle;
  letter-spacing: 0.05em;
  margin-left: 0.4em;
  white-space: nowrap;
}

/* ─── Archive index ───────────────────────────────────────────────── */
.archive-year { margin-top: 2rem; margin-bottom: 0.5rem; }

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

.archive-item {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  padding: 0.25rem 0;
  border-bottom: 1px solid var(--border);
}

.archive-item:last-child { border-bottom: none; }

.archive-date {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-dim);
  white-space: nowrap;
  flex-shrink: 0;
  min-width: 9rem;
}

/* ─── Footer ──────────────────────────────────────────────────────── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem 0;
  margin-top: 3rem;
  font-family: var(--mono);
  font-size: 0.875rem;
  color: var(--text-dim);
}

.site-footer .site-wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.site-footer a:link,
.site-footer a:visited { color: var(--text-dim); }
.site-footer a:hover { color: var(--green); }

/* ─── Syntax highlight (Prism overrides) ─────────────────────────── */
.token.comment { color: #888; }
.token.keyword  { color: var(--red-bright); }
.token.string   { color: var(--green); }
.token.number   { color: var(--amber); }
.token.function { color: var(--amber); }
.token.operator { color: var(--text); }

/* ─── Utilities ───────────────────────────────────────────────────── */
.visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }

/* ─── Pagination ──────────────────────────────────────────────────── */
.post-nav > div:nth-child(2) { text-align: center; }

/* ─── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 600px) {
  h1 { font-size: 1.35rem; }
  h2 { font-size: 1.2rem; }
  .site-title { font-size: 1.2rem; }
  .post-header h1 { font-size: 1.5rem; }
  .post-list-header { flex-direction: column; gap: 0.25rem; }
  .archive-item { flex-direction: column; gap: 0.1rem; }
  .archive-date { min-width: unset; }
}

/* ─── Light mode ──────────────────────────────────────────────────── */
@media (prefers-color-scheme: light) {
  :root {
    --bg:          #f2f0e8;
    --bg-surface:  #eae8e0;
    --bg-raised:   #e2e0d8;
    --border:      #c8c6be;
    --border-lit:  #b0aea8;

    --text:        #1c1c18;
    --text-dim:    #5a5a54;
    --text-header: #0a0a08;

    --red:         #a81400;
    --red-bright:  #cc1800;
    --green:       #1a6825;
    --green-dim:   #164f1e;
    --amber:       #8a4800;
  }

  .site-header { background: var(--bg); }

  /* Comment token needs separate override — it uses a fixed hex in dark mode */
  .token.comment { color: var(--text-dim); }
}