:root {
  --bg: #0a0a0d;
  --bg-elevated: #0d0d11;
  --surface: #131318;
  --surface-2: #1b1b22;
  --border: #26262e;
  --border-hover: #38384a;
  --ink: #f2f2f5;
  --ink-soft: #d3d3da;
  --muted: #9a9aa6;
  --muted-2: #6f6f7a;
  --accent: #8a6dff;
  --accent-ink: #b8a6ff;
  --accent-soft: rgba(138, 109, 255, 0.14);
  --accent-border: rgba(138, 109, 255, 0.35);
  --code-ink: #ffcb6b;
  --max-width: 700px;
  --radius: 14px;
}

* { box-sizing: border-box; }

::selection { background: var(--accent-soft); color: var(--ink); }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background:
    radial-gradient(900px 500px at 15% -10%, rgba(138, 109, 255, 0.10), transparent 60%),
    radial-gradient(700px 500px at 100% 0%, rgba(138, 109, 255, 0.06), transparent 55%),
    var(--bg);
  color: var(--ink);
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a { color: var(--accent-ink); text-decoration: none; }
a:hover { text-decoration: underline; text-decoration-color: var(--accent-border); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 3px;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px 80px;
}

/* Site header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0 26px;
  margin-bottom: 8px;
}
.site-header .brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  font-size: 1rem;
  color: var(--ink);
}
.site-header .brand:hover { text-decoration: none; color: var(--accent-ink); }
.site-header .brand .mark {
  width: 26px;
  height: 26px;
  border-radius: 8px;
  background: linear-gradient(140deg, var(--accent), #5a3fd6);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
  font-size: 0.8rem;
  color: #fff;
  flex: none;
}
.site-header nav {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 0.88rem;
}
.site-header nav a { color: var(--muted); }
.site-header nav a:hover { color: var(--accent-ink); }

h1, h2, h3 {
  font-family: "Space Grotesk", "Inter", sans-serif;
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--ink);
}

/* Home hero */
.hero { padding: 12px 0 8px; }
h1 { font-size: 2.5rem; margin: 0 0 10px; }
.tagline { color: var(--muted); margin: 0; font-size: 1.08rem; max-width: 46ch; }

.post-list { list-style: none; padding: 0; margin: 44px 0 0; display: flex; flex-direction: column; gap: 14px; }

.post-list li {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}
.post-list li:hover {
  border-color: var(--border-hover);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px -14px rgba(0, 0, 0, 0.55);
}

.post-list a.post-card {
  display: block;
  padding: 22px 24px;
  color: inherit;
}
.post-list a.post-card:hover { text-decoration: none; }

.post-list .post-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--muted-2);
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  margin-bottom: 10px;
}
.post-list .post-meta .dot { opacity: 0.6; }

.post-list .post-title {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600;
  font-size: 1.22rem;
  color: var(--ink);
  margin: 0 0 8px;
  transition: color 0.15s ease;
}
.post-list li:hover .post-title { color: var(--accent-ink); }

.post-list .post-excerpt {
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin: 0;
}

.empty-state {
  margin-top: 40px;
  padding: 28px 24px;
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--muted);
  font-size: 0.95rem;
}

/* Post page */
.post-header { margin-bottom: 8px; padding-bottom: 28px; border-bottom: 1px solid var(--border); }
.post-header h1 { font-size: 2.3rem; margin-bottom: 14px; }
.post-header .post-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.post-header .post-date {
  display: inline-flex;
  align-items: center;
  color: var(--accent-ink);
  background: var(--accent-soft);
  border: 1px solid var(--accent-border);
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}
.post-header .read-time {
  color: var(--muted);
  font-size: 0.85rem;
}

.post-body { margin-top: 32px; }
.post-body p { color: var(--ink-soft); }
.post-body > *:first-child { margin-top: 0; }

.post-body img { max-width: 100%; display: block; border-radius: 10px; margin: 26px auto; border: 1px solid var(--border); background: #fff; }

.video-embed {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  margin: 26px 0;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--surface-2);
}
.video-embed iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }

.post-body pre {
  background: var(--surface-2);
  border: 1px solid var(--border);
  padding: 16px 18px;
  border-radius: 10px;
  overflow-x: auto;
  font-size: 0.88rem;
}
.post-body code {
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--surface-2);
  padding: 2px 6px;
  border-radius: 5px;
  font-size: 0.88em;
  color: var(--code-ink);
}
.post-body pre code { background: none; padding: 0; color: var(--ink-soft); }

.post-body blockquote {
  border-left: 3px solid var(--accent);
  margin: 22px 0;
  padding: 6px 0 6px 18px;
  color: var(--muted);
  font-style: italic;
}

.post-body h2, .post-body h3 { margin-top: 42px; margin-bottom: 14px; }
.post-body h2 { font-size: 1.5rem; }
.post-body h3 { font-size: 1.2rem; }

.post-body ul, .post-body ol { padding-left: 1.3em; color: var(--ink-soft); }
.post-body li { margin: 6px 0; }
.post-body li::marker { color: var(--accent-ink); }
.post-body strong { color: var(--ink); font-weight: 600; }

.post-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 40px 0;
}

.post-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 24px 0;
  font-size: 0.92rem;
}
.post-body th, .post-body td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
}
.post-body th { background: var(--surface-2); color: var(--ink); }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 20px;
  color: var(--muted);
  font-size: 0.9rem;
  transition: color 0.15s ease, gap 0.15s ease;
}
.back-link:hover { color: var(--accent-ink); text-decoration: none; gap: 9px; }

footer {
  margin-top: 64px;
  padding-top: 22px;
  border-top: 1px solid var(--border);
  color: var(--muted-2);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
footer a { color: var(--muted); }
footer a:hover { color: var(--accent-ink); }
footer .dot { opacity: 0.5; }

@media (max-width: 480px) {
  body { font-size: 16px; }
  .wrap { padding: 0 18px 60px; }
  h1 { font-size: 2rem; }
  .post-header h1 { font-size: 1.8rem; }
  .site-header { padding: 22px 0 20px; }
  .post-list a.post-card { padding: 18px 20px; }
}