/* ============================================
   darkage.io — clean hacker theme
   ============================================ */

/* --- Dark theme (default) --- */
:root,
[data-theme="dark"] {
  --bg: #0a0e17;
  --bg-surface: #111827;
  --accent: #38bdf8;
  --accent-hover: #22d3ee;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --border: #1e293b;
  --code-bg: #0f172a;
  --code-text: #e2e8f0;
  --tag-bg: rgba(56, 189, 248, 0.1);
  --tag-text: #38bdf8;
  --tag-border: rgba(56, 189, 248, 0.25);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

/* --- Light theme --- */
[data-theme="light"] {
  --bg: #f8fafc;
  --bg-surface: #ffffff;
  --accent: #0284c7;
  --accent-hover: #0891b2;
  --text: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --code-bg: #f1f5f9;
  --code-text: #0f172a;
  --tag-bg: rgba(2, 132, 199, 0.08);
  --tag-text: #0284c7;
  --tag-border: rgba(2, 132, 199, 0.2);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color 0.2s ease, color 0.2s ease;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

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

/* --- Layout --- */
.container {
  width: 100%;
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}

main.container {
  flex: 1;
  padding-top: 2rem;
  padding-bottom: 4rem;
}

/* --- Header --- */
.site-header {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  letter-spacing: -0.02em;
}

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

.title-bracket {
  color: var(--accent);
  font-weight: 400;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.site-nav a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
}

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

.theme-toggle {
  background: none;
  border: 1px solid var(--border);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1.1rem;
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.theme-toggle:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* --- Post list / feed --- */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.post-card {
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--border);
}

.post-card:first-child {
  padding-top: 0;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.reading-time::before {
  content: "·";
  margin-right: 0.75rem;
}

.post-title {
  font-size: 1.35rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.5rem;
  letter-spacing: -0.01em;
}

.post-title a {
  color: var(--text);
}

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

.post-summary {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--tag-text);
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-family: 'JetBrains Mono', monospace;
  transition: background 0.15s ease;
}

.tag:hover {
  background: var(--tag-border);
  color: var(--tag-text);
}

/* --- List page (tags, etc) --- */
.list-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--accent);
}

/* --- Single post --- */
.post-single .post-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.post-single .post-title {
  font-size: 2rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.post-single .post-meta {
  margin-bottom: 1rem;
}

/* --- Post content --- */
.post-content {
  font-size: 1.05rem;
  line-height: 1.8;
}

.post-content h2 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  color: var(--text);
  letter-spacing: -0.01em;
}

.post-content h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.post-content p {
  margin-bottom: 1.25rem;
}

.post-content ul, .post-content ol {
  margin-bottom: 1.25rem;
  padding-left: 1.5rem;
}

.post-content li {
  margin-bottom: 0.4rem;
}

.post-content blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.75rem 1.25rem;
  margin: 1.5rem 0;
  background: var(--bg-surface);
  border-radius: 0 6px 6px 0;
  color: var(--text-muted);
  font-style: italic;
}

.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 1.5rem 0;
  border: 1px solid var(--border);
}

.post-content a {
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* --- Code --- */
.post-content code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.88em;
  background: var(--code-bg);
  color: var(--code-text);
  padding: 0.15em 0.4em;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.post-content pre {
  background: var(--code-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
  line-height: 1.5;
}

.post-content pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.88rem;
}

/* --- Post footer --- */
.post-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

.back-link {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

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

/* --- Site footer --- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem 0;
  margin-top: auto;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-sep {
  color: var(--border);
}

.rss-link {
  color: var(--text-muted);
}

.rss-link:hover {
  color: var(--accent);
}

/* --- Responsive --- */
@media (max-width: 600px) {
  .post-single .post-title {
    font-size: 1.5rem;
  }

  .post-title {
    font-size: 1.15rem;
  }

  .post-content {
    font-size: 1rem;
  }

  .header-inner {
    gap: 0.75rem;
  }

  .site-nav {
    gap: 0.75rem;
  }
}

/* --- Syntax highlighting (dark theme - dracula) --- */
[data-theme="dark"] .chroma { color:#f8f8f2;background-color:var(--code-bg); }
[data-theme="dark"] .chroma .x { color:#f8f8f2 }
[data-theme="dark"] .chroma .err { color:#f8f8f2 }
[data-theme="dark"] .chroma .lnlinks { outline:none;text-decoration:none;color:inherit }
[data-theme="dark"] .chroma .lntd { vertical-align:top;padding:0;margin:0;border:0; }
[data-theme="dark"] .chroma .lntable { border-spacing:0;padding:0;margin:0;border:0; }
[data-theme="dark"] .chroma .hl { background-color:#3d3f4a }
[data-theme="dark"] .chroma .lnt { white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f }
[data-theme="dark"] .chroma .ln { white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f }
[data-theme="dark"] .chroma .line { display:flex; }
[data-theme="dark"] .chroma .k { color:#ff79c6 }
[data-theme="dark"] .chroma .kc { color:#ff79c6 }
[data-theme="dark"] .chroma .kd { color:#8be9fd;font-style:italic }
[data-theme="dark"] .chroma .kn { color:#ff79c6 }
[data-theme="dark"] .chroma .kp { color:#ff79c6 }
[data-theme="dark"] .chroma .kr { color:#ff79c6 }
[data-theme="dark"] .chroma .kt { color:#8be9fd }
[data-theme="dark"] .chroma .na { color:#50fa7b }
[data-theme="dark"] .chroma .nc { color:#50fa7b }
[data-theme="dark"] .chroma .no { color:#f8f8f2 }
[data-theme="dark"] .chroma .nd { color:#f8f8f2 }
[data-theme="dark"] .chroma .ni { color:#f8f8f2 }
[data-theme="dark"] .chroma .ne { color:#f8f8f2 }
[data-theme="dark"] .chroma .nl { color:#8be9fd;font-style:italic }
[data-theme="dark"] .chroma .nn { color:#f8f8f2 }
[data-theme="dark"] .chroma .nx { color:#f8f8f2 }
[data-theme="dark"] .chroma .nt { color:#ff79c6 }
[data-theme="dark"] .chroma .nb { color:#8be9fd;font-style:italic }
[data-theme="dark"] .chroma .bp { font-style:italic }
[data-theme="dark"] .chroma .nv { color:#8be9fd;font-style:italic }
[data-theme="dark"] .chroma .vc { color:#8be9fd;font-style:italic }
[data-theme="dark"] .chroma .vg { color:#8be9fd;font-style:italic }
[data-theme="dark"] .chroma .vi { color:#8be9fd;font-style:italic }
[data-theme="dark"] .chroma .vm { color:#8be9fd;font-style:italic }
[data-theme="dark"] .chroma .nf { color:#50fa7b }
[data-theme="dark"] .chroma .fm { color:#50fa7b }
[data-theme="dark"] .chroma .ld { color:#f8f8f2 }
[data-theme="dark"] .chroma .s { color:#f1fa8c }
[data-theme="dark"] .chroma .sa { color:#f1fa8c }
[data-theme="dark"] .chroma .sb { color:#f1fa8c }
[data-theme="dark"] .chroma .sc { color:#f1fa8c }
[data-theme="dark"] .chroma .dl { color:#f1fa8c }
[data-theme="dark"] .chroma .sd { color:#f1fa8c }
[data-theme="dark"] .chroma .s2 { color:#f1fa8c }
[data-theme="dark"] .chroma .se { color:#f1fa8c }
[data-theme="dark"] .chroma .sh { color:#f1fa8c }
[data-theme="dark"] .chroma .si { color:#f1fa8c }
[data-theme="dark"] .chroma .sx { color:#f1fa8c }
[data-theme="dark"] .chroma .sr { color:#f1fa8c }
[data-theme="dark"] .chroma .s1 { color:#f1fa8c }
[data-theme="dark"] .chroma .ss { color:#f1fa8c }
[data-theme="dark"] .chroma .m { color:#bd93f9 }
[data-theme="dark"] .chroma .mb { color:#bd93f9 }
[data-theme="dark"] .chroma .mf { color:#bd93f9 }
[data-theme="dark"] .chroma .mh { color:#bd93f9 }
[data-theme="dark"] .chroma .mi { color:#bd93f9 }
[data-theme="dark"] .chroma .il { color:#bd93f9 }
[data-theme="dark"] .chroma .mo { color:#bd93f9 }
[data-theme="dark"] .chroma .o { color:#ff79c6 }
[data-theme="dark"] .chroma .ow { color:#ff79c6 }
[data-theme="dark"] .chroma .or { color:#ff79c6 }
[data-theme="dark"] .chroma .p { color:#f8f8f2 }
[data-theme="dark"] .chroma .c { color:#6272a4 }
[data-theme="dark"] .chroma .ch { color:#6272a4 }
[data-theme="dark"] .chroma .cm { color:#6272a4 }
[data-theme="dark"] .chroma .c1 { color:#6272a4 }
[data-theme="dark"] .chroma .cs { color:#6272a4 }
[data-theme="dark"] .chroma .cp { color:#ff79c6 }
[data-theme="dark"] .chroma .cpf { color:#ff79c6 }
[data-theme="dark"] .chroma .gd { color:#f55 }
[data-theme="dark"] .chroma .ge { text-decoration:underline }
[data-theme="dark"] .chroma .gr { color:#f8f8f2 }
[data-theme="dark"] .chroma .gh { font-weight:bold }
[data-theme="dark"] .chroma .gi { color:#50fa7b;font-weight:bold }
[data-theme="dark"] .chroma .go { color:#44475a }
[data-theme="dark"] .chroma .gp { color:#f8f8f2 }
[data-theme="dark"] .chroma .gs { color:#f8f8f2 }
[data-theme="dark"] .chroma .gu { font-weight:bold }
[data-theme="dark"] .chroma .gt { color:#f8f8f2 }
[data-theme="dark"] .chroma .gl { text-decoration:underline }
[data-theme="dark"] .chroma .w { color:#f8f8f2 }

/* --- Syntax highlighting (light theme - monokai light) --- */
[data-theme="light"] .chroma { color:#272822;background-color:var(--code-bg); }
[data-theme="light"] .chroma .err { color:#960050;background-color:#1e0010 }
[data-theme="light"] .chroma .lnlinks { outline:none;text-decoration:none;color:inherit }
[data-theme="light"] .chroma .lntd { vertical-align:top;padding:0;margin:0;border:0; }
[data-theme="light"] .chroma .lntable { border-spacing:0;padding:0;margin:0;border:0; }
[data-theme="light"] .chroma .hl { background-color:#e1e1e1 }
[data-theme="light"] .chroma .lnt { white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f }
[data-theme="light"] .chroma .ln { white-space:pre;-webkit-user-select:none;user-select:none;margin-right:0.4em;padding:0 0.4em 0 0.4em;color:#7f7f7f }
[data-theme="light"] .chroma .line { display:flex; }
[data-theme="light"] .chroma .k { color:#00a8c8 }
[data-theme="light"] .chroma .kc { color:#00a8c8 }
[data-theme="light"] .chroma .kd { color:#00a8c8 }
[data-theme="light"] .chroma .kn { color:#f92672 }
[data-theme="light"] .chroma .kp { color:#00a8c8 }
[data-theme="light"] .chroma .kr { color:#00a8c8 }
[data-theme="light"] .chroma .kt { color:#00a8c8 }
[data-theme="light"] .chroma .n { color:#111 }
[data-theme="light"] .chroma .na { color:#75af00 }
[data-theme="light"] .chroma .nc { color:#75af00 }
[data-theme="light"] .chroma .no { color:#00a8c8 }
[data-theme="light"] .chroma .nd { color:#75af00 }
[data-theme="light"] .chroma .ni { color:#111 }
[data-theme="light"] .chroma .ne { color:#75af00 }
[data-theme="light"] .chroma .nl { color:#111 }
[data-theme="light"] .chroma .nn { color:#111 }
[data-theme="light"] .chroma .nx { color:#75af00 }
[data-theme="light"] .chroma .py { color:#111 }
[data-theme="light"] .chroma .nt { color:#f92672 }
[data-theme="light"] .chroma .nb { color:#111 }
[data-theme="light"] .chroma .bp { color:#111 }
[data-theme="light"] .chroma .nv { color:#111 }
[data-theme="light"] .chroma .vc { color:#111 }
[data-theme="light"] .chroma .vg { color:#111 }
[data-theme="light"] .chroma .vi { color:#111 }
[data-theme="light"] .chroma .vm { color:#111 }
[data-theme="light"] .chroma .nf { color:#75af00 }
[data-theme="light"] .chroma .fm { color:#75af00 }
[data-theme="light"] .chroma .l { color:#ae81ff }
[data-theme="light"] .chroma .ld { color:#d88200 }
[data-theme="light"] .chroma .s { color:#d88200 }
[data-theme="light"] .chroma .sa { color:#d88200 }
[data-theme="light"] .chroma .sb { color:#d88200 }
[data-theme="light"] .chroma .sc { color:#d88200 }
[data-theme="light"] .chroma .dl { color:#d88200 }
[data-theme="light"] .chroma .sd { color:#d88200 }
[data-theme="light"] .chroma .s2 { color:#d88200 }
[data-theme="light"] .chroma .se { color:#8045ff }
[data-theme="light"] .chroma .sh { color:#d88200 }
[data-theme="light"] .chroma .si { color:#d88200 }
[data-theme="light"] .chroma .sx { color:#d88200 }
[data-theme="light"] .chroma .sr { color:#d88200 }
[data-theme="light"] .chroma .s1 { color:#d88200 }
[data-theme="light"] .chroma .ss { color:#d88200 }
[data-theme="light"] .chroma .m { color:#ae81ff }
[data-theme="light"] .chroma .mb { color:#ae81ff }
[data-theme="light"] .chroma .mf { color:#ae81ff }
[data-theme="light"] .chroma .mh { color:#ae81ff }
[data-theme="light"] .chroma .mi { color:#ae81ff }
[data-theme="light"] .chroma .il { color:#ae81ff }
[data-theme="light"] .chroma .mo { color:#ae81ff }
[data-theme="light"] .chroma .o { color:#f92672 }
[data-theme="light"] .chroma .ow { color:#f92672 }
[data-theme="light"] .chroma .or { color:#f92672 }
[data-theme="light"] .chroma .p { color:#111 }
[data-theme="light"] .chroma .c { color:#75715e }
[data-theme="light"] .chroma .ch { color:#75715e }
[data-theme="light"] .chroma .cm { color:#75715e }
[data-theme="light"] .chroma .c1 { color:#75715e }
[data-theme="light"] .chroma .cs { color:#75715e }
[data-theme="light"] .chroma .cp { color:#75715e }
[data-theme="light"] .chroma .cpf { color:#75715e }
[data-theme="light"] .chroma .ge { font-style:italic }
[data-theme="light"] .chroma .gs { font-weight:bold }