:root {
  --bg: #0e0e0e;
  --fg: #c8c8c8;
  --fg-bright: #e8e8e8;
  --dim: #555;
  --accent: #888;
  --border: #282828;
  --surface: #161616;
  --bg-light: #fafafa;
  --fg-light: #1a1a1a;
  --fg-bright-light: #000;
  --dim-light: #999;
  --accent-light: #555;
  --border-light: #e0e0e0;
  --surface-light: #fff;
}

* { box-sizing: border-box; }

body {
  font-family: 'Ubuntu Mono', monospace;
  transition: background-color 0.3s, color 0.3s;
  padding: 0;
  margin: 0;
  line-height: 1.65;
  font-size: 16px;
}

body.dark {
  background-color: var(--bg);
  color: var(--fg);
}

body.light {
  background-color: var(--bg-light);
  color: var(--fg-light);
}

/* Layout */
.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* Links */
a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  transition: border-color 0.2s;
}

a:hover {
  border-bottom-color: var(--fg);
}

body.light a { border-bottom-color: var(--border-light); }
body.light a:hover { border-bottom-color: var(--fg-light); }

/* Header */
header {
  padding: 2rem 0 0;
  margin-bottom: 1rem;
}

nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

nav a {
  border-bottom: none;
  color: var(--dim);
  font-size: 0.875rem;
  letter-spacing: 0.02em;
}

body.light nav a { color: var(--dim-light); }

nav a:hover {
  color: var(--fg);
  border-bottom: none;
}

body.light nav a:hover { color: var(--fg-light); }

#theme-switcher {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  font-family: inherit;
  padding: 0.25rem 0.5rem;
  filter: grayscale(1);
  margin-left: auto;
  font-size: 0.875rem;
}

body.light #theme-switcher {
  filter: grayscale(1) brightness(0.3);
}

/* ASCII title */
.site-title-ascii {
  font-family: 'Ubuntu Mono', monospace;
  white-space: pre;
  font-size: 10px;
  line-height: 1.1;
  margin: 1.5rem 0 0.5rem 0;
  color: var(--fg-bright);
  overflow-x: auto;
}

body.light .site-title-ascii {
  color: var(--fg-bright-light);
}

/* Site links row */
.site-links {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  font-size: 0.875rem;
}

.site-links a {
  color: var(--dim);
  border-bottom: 1px solid var(--border);
}

body.light .site-links a {
  color: var(--dim-light);
  border-bottom-color: var(--border-light);
}

.site-links a:hover {
  color: var(--fg);
  border-bottom-color: var(--fg);
}

body.light .site-links a:hover {
  color: var(--fg-light);
  border-bottom-color: var(--fg-light);
}

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

.post-list li {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}

body.light .post-list li {
  border-bottom-color: var(--border-light);
}

.post-list li:last-child {
  border-bottom: none;
}

.post-list a {
  border-bottom: none;
  flex: 1;
}

.post-list a:hover {
  color: var(--fg-bright);
  border-bottom: none;
}

body.light .post-list a:hover {
  color: var(--fg-bright-light);
}

.post-date {
  color: var(--dim);
  font-size: 0.8125rem;
  white-space: nowrap;
  flex-shrink: 0;
}

body.light .post-date {
  color: var(--dim-light);
}

/* Post content */
h1 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-top: 2.5rem;
  margin-bottom: 0.5rem;
  line-height: 1.3;
  color: var(--fg-bright);
}

body.light h1 { color: var(--fg-bright-light); }

h2 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-top: 2.5rem;
  margin-bottom: 0.75rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border);
  color: var(--fg-bright);
}

body.light h2 {
  color: var(--fg-bright-light);
  border-bottom-color: var(--border-light);
}

h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-top: 1.75rem;
  margin-bottom: 0.5rem;
  color: var(--fg);
}

body.light h3 { color: var(--fg-light); }

p {
  margin: 0 0 1rem;
}

/* Code blocks */
pre {
  overflow-x: auto;
  padding: 1rem 1.25rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 4px;
  line-height: 1.5;
  font-size: 14px;
  margin: 1.25rem 0;
}

body.light pre {
  background: var(--surface-light);
  border-color: var(--border-light);
}

code {
  font-family: 'Ubuntu Mono', monospace;
  font-size: 14px;
}

/* Inline code */
p code, li code {
  padding: 0.15rem 0.4rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
}

body.light p code, body.light li code {
  background: var(--surface-light);
  border-color: var(--border-light);
}

/* Blockquotes */
blockquote {
  margin: 1.25rem 0;
  padding: 0.5rem 1rem;
  border-left: 2px solid var(--dim);
  color: var(--accent);
}

body.light blockquote {
  border-left-color: var(--dim-light);
  color: var(--accent-light);
}

blockquote p:last-child { margin-bottom: 0; }

/* Tables */
table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.25rem 0;
  font-size: 14px;
}

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

body.light th, body.light td {
  border-color: var(--border-light);
}

th {
  font-weight: 700;
  background: var(--surface);
}

body.light th {
  background: var(--surface-light);
}

/* Horizontal rules */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5rem 0;
}

body.light hr {
  border-top-color: var(--border-light);
}

/* Images */
img {
  max-width: 100%;
  border-radius: 4px;
}

/* Strong / emphasis */
strong {
  font-weight: 700;
  color: var(--fg-bright);
}

body.light strong {
  color: var(--fg-bright-light);
}

/* Lists in content */
ul, ol {
  padding-left: 1.5rem;
  margin: 0 0 1rem;
}

li {
  margin-bottom: 0.35rem;
}

/* Footer */
footer {
  margin-top: 4rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--dim);
  font-size: 0.8125rem;
}

body.light footer {
  border-top-color: var(--border-light);
  color: var(--dim-light);
}

footer a {
  color: var(--dim);
}

body.light footer a {
  color: var(--dim-light);
}

/* Responsive */
@media (max-width: 600px) {
  .site-title-ascii {
    font-size: 6px;
  }

  .post-list li {
    flex-direction: column;
    gap: 0.15rem;
  }

  .page {
    padding: 1.5rem 1rem 3rem;
  }
}