:root {
  --bg: #0b0d14;
  --bg-alt: #10131d;
  --surface: #141827;
  --surface-border: #242a3d;
  --fg: #e6e8f0;
  --muted: #8b93ab;
  --accent: #9b7fe0;
  --accent-soft: #6a4f9f;
  --accent-glow: rgba(155, 127, 224, 0.35);
  --mono: "SFMono-Regular", ui-monospace, "Cascadia Code", "Roboto Mono", Consolas, Menlo, monospace;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(60rem 30rem at 15% -10%, rgba(106, 79, 159, 0.22), transparent 60%),
    radial-gradient(50rem 26rem at 110% 10%, rgba(89, 168, 199, 0.10), transparent 55%),
    var(--bg);
  color: var(--fg);
  line-height: 1.65;
}

::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: linear-gradient(180deg, rgba(155, 127, 224, 0.06), transparent);
}
.site-header .wrap {
  display: flex;
  align-items: baseline;
  gap: 0.85rem;
  flex-wrap: wrap;
}
.brand {
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
  color: var(--fg);
  text-decoration: none;
  background: linear-gradient(120deg, #fff, var(--accent) 120%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}
.brand::before {
  content: "";
  display: inline-block;
  width: 0.55em;
  height: 0.55em;
  margin-right: 0.5em;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0.6em 0.05em var(--accent-glow);
  vertical-align: middle;
}
.tagline {
  color: var(--muted);
  font-size: 0.95rem;
}
.nav {
  margin-left: auto;
}
.nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.95rem;
  padding: 0.35rem 0.85rem;
  border-radius: 999px;
  border: 1px solid transparent;
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}
.nav a:hover {
  color: var(--fg);
  border-color: var(--surface-border);
  background: var(--surface);
}

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: 2rem;
  letter-spacing: -0.02em;
}
.intro p {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 46rem;
}

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

/* Post list */
.post-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.post-summary {
  padding: 1.35rem 1.5rem;
  border: 1px solid var(--surface-border);
  border-radius: 14px;
  background: linear-gradient(160deg, var(--surface), var(--bg-alt));
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}
.post-summary:hover {
  border-color: var(--accent-soft);
  box-shadow: 0 0 0 1px var(--accent-soft), 0 0.5rem 1.75rem -0.75rem var(--accent-glow);
  transform: translateY(-1px);
}
.post-summary h2 {
  margin: 0 0 0.35rem 0;
  font-size: 1.3rem;
}
.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: 0.82rem;
  margin: 0 0 0.6rem 0;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* Tag chips */
.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: 0.72rem;
  letter-spacing: 0.02em;
  color: var(--accent);
  background: rgba(155, 127, 224, 0.12);
  border: 1px solid rgba(155, 127, 224, 0.35);
  border-radius: 999px;
  padding: 0.22rem 0.7rem;
  text-decoration: none;
  white-space: nowrap;
}
a.tag:hover {
  background: rgba(155, 127, 224, 0.22);
  border-color: var(--accent);
  color: #fff;
}

/* Single post */
article.post h1 {
  margin: 0 0 0.5rem 0;
  font-size: 2.1rem;
  line-height: 1.25;
}
article.post > .meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2.25rem;
  text-transform: none;
  letter-spacing: normal;
  font-size: 0.85rem;
}

.content h2 {
  margin-top: 2.5rem;
  font-size: 1.4rem;
  padding-top: 0.25rem;
  border-top: 1px solid var(--surface-border);
}
.content h3 {
  margin-top: 1.75rem;
  font-size: 1.15rem;
}
.content p, .content li {
  color: #d7dae4;
}
.content ul, .content ol {
  padding-left: 1.4rem;
}

.content pre {
  background: #090b11;
  color: #dbe2f0;
  padding: 1.1rem 1.25rem;
  border-radius: 10px;
  border: 1px solid var(--surface-border);
  overflow-x: auto;
  font-family: var(--mono);
}
.content code {
  font-family: var(--mono);
  background: rgba(155, 127, 224, 0.14);
  color: #cbb8f5;
  padding: 0.12rem 0.4rem;
  border-radius: 5px;
  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(155, 127, 224, 0.45);
  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(155, 127, 224, 0.05);
  border-radius: 0 8px 8px 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: 0.92rem;
  border: 1px solid var(--surface-border);
  border-radius: 10px;
  overflow: hidden;
}
.content th, .content td {
  border-bottom: 1px solid var(--surface-border);
  border-right: 1px solid var(--surface-border);
  padding: 0.55rem 0.75rem;
  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(--fg);
  font-size: 0.82rem;
  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: 0.8rem;
  background: linear-gradient(0deg, rgba(155, 127, 224, 0.05), transparent);
}
.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: 1.65rem;
  }
  article.post h1 {
    font-size: 1.65rem;
  }
  .post-summary {
    padding: 1.1rem 1.15rem;
  }
  .content pre {
    padding: 0.9rem;
  }
}