:root {
  --bg: #05070a;
  --bg-alt: #090c11;
  --surface: #0d1218;
  --surface-border: #1c2530;
  --fg: #d7dde5;
  --muted: #6b7684;
  --accent: #00d97e;
  --accent-soft: #0a8a52;
  --accent-glow: rgba(0, 217, 126, 0.25);
  --down: #ff5c5c;
  --mono: "SFMono-Regular", ui-monospace, "Cascadia Code", "Roboto Mono", Consolas, Menlo, monospace;
  font-family: var(--mono), -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html { background: var(--bg); }

body {
  margin: 0;
  min-height: 100vh;
  background:
    linear-gradient(180deg, rgba(0, 217, 126, 0.05), transparent 20%),
    var(--bg);
  color: var(--fg);
  line-height: 1.65;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

::selection { background: var(--accent-glow); color: #fff; }

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

.wrap {
  max-width: 760px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Header */
.site-header {
  border-bottom: 1px solid var(--surface-border);
  padding: 1.75rem 0;
  background: var(--bg-alt);
}
.site-header .wrap {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  flex-wrap: wrap;
}
.brand {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.3rem;
  letter-spacing: -0.01em;
  color: var(--fg);
  text-decoration: none;
}
.brand::before {
  content: "▲";
  display: inline-block;
  margin-right: 0.45em;
  color: var(--accent);
  font-size: 0.85em;
  text-shadow: 0 0 0.5em var(--accent-glow);
}
.tagline {
  color: var(--muted);
  font-size: 0.9rem;
  font-family: var(--mono);
}
.nav { margin-left: auto; }
.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-family: var(--mono);
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--surface-border);
  border-radius: 3px;
  transition: color 0.15s ease, border-color 0.15s ease;
}
.nav a:hover {
  color: var(--accent);
  border-color: var(--accent-soft);
}

main.wrap {
  padding-top: 2.5rem;
  padding-bottom: 3.5rem;
  min-height: 60vh;
}

/* Intro / home */
.intro {
  margin-bottom: 2.5rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--surface-border);
}
.intro h1 {
  margin: 0 0 0.5rem 0;
  font-size: 1.9rem;
  letter-spacing: -0.01em;
  font-family: var(--mono);
}
.intro p {
  color: var(--muted);
  font-size: 1.02rem;
  max-width: 46rem;
}

h1, h2, h3 { color: var(--fg); letter-spacing: -0.01em; }

/* Post list — "filing rows" */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.post-summary {
  padding: 1.2rem 1.4rem;
  border: 1px solid var(--surface-border);
  border-left: 3px solid var(--accent-soft);
  border-radius: 4px;
  background: var(--surface);
  transition: border-color 0.15s ease, background 0.15s ease;
}
.post-summary:hover {
  border-left-color: var(--accent);
  background: var(--bg-alt);
}
.post-summary h2 {
  margin: 0 0 0.35rem 0;
  font-size: 1.2rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
.post-summary a { color: var(--fg); text-decoration: none; }
.post-summary a:hover { color: var(--accent); }
.post-summary p:last-child { margin-bottom: 0; color: var(--muted); }
.meta {
  color: var(--muted);
  font-size: 0.78rem;
  margin: 0 0 0.6rem 0;
  font-family: var(--mono);
  letter-spacing: 0.02em;
}

/* Tag chips — ticker style */
.tags {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: 0.15rem 0 0 0;
  padding: 0;
  list-style: none;
}
.tag {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(0, 217, 126, 0.08);
  border: 1px solid rgba(0, 217, 126, 0.3);
  border-radius: 3px;
  padding: 0.2rem 0.6rem;
  text-decoration: none;
  white-space: nowrap;
}
a.tag:hover {
  background: rgba(0, 217, 126, 0.18);
  border-color: var(--accent);
  color: #fff;
}

/* Single post */
article.post h1 {
  margin: 0 0 0.5rem 0;
  font-size: 1.9rem;
  line-height: 1.3;
}
article.post > .meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 1.1rem;
}
.disclaimer {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--muted);
  background: var(--surface);
  border: 1px solid var(--surface-border);
  border-left: 3px solid var(--down);
  border-radius: 4px;
  padding: 0.65rem 0.9rem;
  margin: 0 0 2rem 0;
}

.content h2 {
  margin-top: 2.5rem;
  font-size: 1.3rem;
  padding-top: 0.25rem;
  border-top: 1px solid var(--surface-border);
}
.content h3 { margin-top: 1.75rem; font-size: 1.1rem; }
.content p, .content li { color: #cfd5de; }
.content ul, .content ol { padding-left: 1.4rem; }

.content pre {
  background: #060809;
  color: #dbe2f0;
  padding: 1.1rem 1.25rem;
  border-radius: 4px;
  border: 1px solid var(--surface-border);
  overflow-x: auto;
  font-family: var(--mono);
}
.content code {
  font-family: var(--mono);
  background: rgba(0, 217, 126, 0.1);
  color: #7fe8bb;
  padding: 0.12rem 0.4rem;
  border-radius: 3px;
  font-size: 0.87em;
}
.content pre code { background: none; color: inherit; padding: 0; font-size: 0.87em; }
.content a { color: var(--accent); text-decoration-color: rgba(0, 217, 126, 0.4); text-underline-offset: 0.2em; }
.content a:hover { text-decoration-color: var(--accent); }
.content blockquote {
  margin: 1.5rem 0;
  padding: 0.25rem 1.25rem;
  border-left: 3px solid var(--accent-soft);
  color: var(--muted);
  background: rgba(0, 217, 126, 0.04);
  border-radius: 0 4px 4px 0;
}
.content hr { border: none; border-top: 1px solid var(--surface-border); margin: 2.5rem 0; }

.content table {
  border-collapse: collapse;
  width: 100%;
  margin: 1.5rem 0;
  font-size: 0.88rem;
  font-family: var(--mono);
  border: 1px solid var(--surface-border);
  border-radius: 4px;
  overflow: hidden;
}
.content th, .content td {
  border-bottom: 1px solid var(--surface-border);
  border-right: 1px solid var(--surface-border);
  padding: 0.5rem 0.7rem;
  text-align: left;
}
.content th:last-child, .content td:last-child { border-right: none; }
.content tr:last-child td { border-bottom: none; }
.content thead th {
  background: var(--surface);
  color: var(--accent);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--surface-border);
  padding: 2rem 0;
  color: var(--muted);
  font-size: 0.78rem;
  font-family: var(--mono);
  background: var(--bg-alt);
}
.site-footer a { color: var(--muted); }

/* Mobile */
@media (max-width: 640px) {
  .wrap { padding: 0 1rem; }
  .site-header .wrap { gap: 0.5rem; }
  .nav { margin-left: 0; width: 100%; }
  .intro h1 { font-size: 1.5rem; }
  article.post h1 { font-size: 1.5rem; }
  .post-summary { padding: 1rem 1.1rem; }
  .content pre { padding: 0.9rem; }
}