:root {
  --bg: #0d0d0d;
  --text: #d97706;
  --heading: #f5c842;
  --link: #d97706;
  --link-hover: #fcd34d;
  --muted: #7a4f08;
  --border: #1e1e1e;
  --code-bg: #171717;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: Georgia, 'Times New Roman', serif;
  line-height: 1.75;
  padding: 2.5rem 1.5rem 4rem;
}

.container {
  max-width: 660px;
  margin: 0 auto;
}

/* ── Header ── */

header {
  margin-bottom: 3.5rem;
}

nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

nav a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.95rem;
}

nav a:hover {
  color: var(--link-hover);
  text-decoration: underline;
}

/* ── Typography ── */

h1, h2, h3, h4 {
  color: var(--heading);
  line-height: 1.3;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

h1 { font-size: 1.7rem; margin-top: 0; }
h2 { font-size: 1.3rem; }
h3 { font-size: 1.1rem; }

p {
  margin-bottom: 1rem;
}

a {
  color: var(--link);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

ul, ol {
  margin: 0 0 1rem 1.4rem;
}

li {
  margin-bottom: 0.3rem;
}

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

blockquote {
  border-left: 3px solid var(--muted);
  padding-left: 1rem;
  margin: 1rem 0;
  color: var(--muted);
  font-style: italic;
}

code {
  background: var(--code-bg);
  border: 1px solid var(--border);
  padding: 0.1em 0.3em;
  border-radius: 3px;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.88em;
  color: var(--heading);
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  padding: 1rem;
  border-radius: 4px;
  overflow-x: auto;
  margin-bottom: 1rem;
}

pre code {
  border: none;
  padding: 0;
  font-size: 0.9em;
}

/* ── Home page ── */

.profile-wrap {
  display: flex;
  align-items: flex-start;
  gap: 1.75rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.profile-img {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--muted);
  flex-shrink: 0;
}

.profile-text h1 {
  margin-bottom: 0.4rem;
}

.section-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 0.5rem;
  margin-top: 2.5rem;
}

/* ── Post / writing list ── */

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

.post-list li {
  display: flex;
  gap: 1.25rem;
  align-items: baseline;
  margin-bottom: 0.6rem;
}

.post-date {
  color: var(--muted);
  font-size: 0.85rem;
  min-width: 85px;
  flex-shrink: 0;
  font-family: 'Courier New', Courier, monospace;
}

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

.post-link:hover {
  color: var(--link-hover);
  text-decoration: underline;
}

/* ── Post content ── */

.post-meta {
  color: var(--muted);
  font-size: 0.85rem;
  margin-bottom: 2rem;
  font-family: 'Courier New', Courier, monospace;
}

.post-title {
  margin-bottom: 0.25rem;
}

/* ── Footer ── */

footer {
  margin-top: 4rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--muted);
}

/* ── Post extras ── */

.post-back {
  font-size: 0.85rem;
  margin-bottom: 1.5rem;
}

.post-back a {
  text-decoration: none;
  color: var(--muted);
}

.post-back a:hover {
  color: var(--link-hover);
}

.post-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.9rem;
  margin-top: 1rem;
}

.post-nav-prev,
.post-nav-next {
  text-decoration: none;
  color: var(--muted);
  max-width: 48%;
}

.post-nav-next {
  margin-left: auto;
  text-align: right;
}

.post-nav-prev:hover,
.post-nav-next:hover {
  color: var(--link-hover);
}

/* ── Table of contents ── */

.toc {
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem 1.25rem;
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

.toc-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

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

.toc li {
  margin-bottom: 0.25rem;
}

.toc-h3 {
  padding-left: 1rem;
}

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

.toc a:hover {
  color: var(--link-hover);
}

/* ── Tables ── */

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

th, td {
  border: 1px solid var(--border);
  padding: 0.5rem 0.75rem;
  text-align: left;
}

th {
  color: var(--heading);
  background: var(--code-bg);
}

/* ── Images & figures ── */

img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
}

.post-content img {
  display: block;
  margin: 1.5rem auto;
}

figcaption {
  text-align: center;
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.4rem;
}

/* ── Footnotes ── */

.footnotes {
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
  margin-top: 3rem;
  padding-top: 1rem;
}

/* ── Syntax highlighting (Rouge) ── */

.highlight, figure.highlight {
  margin-bottom: 1rem;
}

.highlight .lineno {
  color: var(--muted);
  margin-right: 1rem;
  user-select: none;
}

.highlight pre { margin: 0; }
.highlight, .highlight pre, .highlight code { color: #d4d4d4; background: var(--code-bg); }

.highlight .c, .highlight .c1, .highlight .cm, .highlight .cd { color: #6b7280; font-style: italic; } /* comments */
.highlight .cp { color: #6b7280; } /* preprocessor */
.highlight .k, .highlight .kd, .highlight .kn, .highlight .kp, .highlight .kr, .highlight .kt { color: #f5c842; } /* keywords */
.highlight .o, .highlight .ow { color: #fcd34d; } /* operators */
.highlight .s, .highlight .s1, .highlight .s2, .highlight .sb, .highlight .sc, .highlight .sd, .highlight .se, .highlight .sh, .highlight .si, .highlight .sx, .highlight .sr, .highlight .ss { color: #a3e635; } /* strings */
.highlight .m, .highlight .mi, .highlight .mf, .highlight .mh, .highlight .mo, .highlight .il { color: #fb923c; } /* numbers */
.highlight .n, .highlight .nv, .highlight .vc, .highlight .vg, .highlight .vi { color: #e5e7eb; } /* names/vars */
.highlight .nf, .highlight .fm { color: #60a5fa; } /* functions */
.highlight .nc, .highlight .nn { color: #f5c842; } /* classes/namespaces */
.highlight .nb, .highlight .bp { color: #38bdf8; } /* builtins */
.highlight .nt { color: #f5c842; } /* html tags */
.highlight .na { color: #fb923c; } /* attributes */
.highlight .nd { color: #c084fc; } /* decorators */
.highlight .gd { color: #f87171; } /* diff delete */
.highlight .gi { color: #a3e635; } /* diff insert */
.highlight .err { color: #f87171; }
.highlight .p { color: #d4d4d4; } /* punctuation */

/* ── Responsive ── */

@media (max-width: 480px) {
  header {
    flex-direction: column;
    gap: 0.75rem;
  }

  .profile-wrap {
    flex-direction: column;
  }

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

  .post-nav-next {
    text-align: left;
  }
}