:root {
  --bg: #ffffff;
  --bg-soft: #f5f5f4;
  --border: #e7e5e4;
  --text: #1c1917;
  --text-soft: #57534e;
  --accent: #ea580c;
  --radius: 12px;
  --max: 720px;
  --font: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;
}

:root[data-theme='dark'] {
  --bg: #0c0a09;
  --bg-soft: #1c1917;
  --border: #292524;
  --text: #f5f5f4;
  --text-soft: #a8a29e;
  --accent: #fb923c;
}

* { box-sizing: border-box; }

html {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  scroll-behavior: smooth;
}

body {
  margin: 0;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.25; letter-spacing: -0.02em; }
h1 { font-size: clamp(2rem, 6vw, 2.75rem); margin: 0 0 .5rem; }
h2 { font-size: 1.4rem; margin: 2.5rem 0 1rem; }

p { color: var(--text-soft); }

/* Nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.nav .wrap {
  display: flex; align-items: center; justify-content: space-between;
  height: 60px;
}
.nav .brand { font-family: var(--mono); font-weight: 600; color: var(--text); }
.nav-links { display: flex; align-items: center; gap: 1.25rem; }
.nav-links a { color: var(--text-soft); font-size: .95rem; }
.nav-links a:hover { color: var(--text); text-decoration: none; }

.theme-btn {
  background: var(--bg-soft); border: 1px solid var(--border);
  color: var(--text); width: 34px; height: 34px; border-radius: 8px;
  cursor: pointer; display: grid; place-items: center; font-size: 1rem;
}
.theme-btn:hover { border-color: var(--accent); }

/* Hero */
.hero { padding: 4rem 0 2rem; }
.hero .role { font-family: var(--mono); color: var(--accent); font-size: .9rem; }
.hero .lead { font-size: 1.15rem; margin-top: 1rem; }
.meta { display: flex; flex-wrap: wrap; gap: 1rem; margin-top: 1.5rem; font-size: .9rem; }
.meta span { color: var(--text-soft); }

/* Chips */
.chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip {
  font-family: var(--mono); font-size: .8rem; padding: .25rem .6rem;
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: 6px;
  color: var(--text-soft);
}

/* Cards */
.cards { display: grid; gap: 1rem; }
.card {
  display: block; padding: 1.25rem; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--bg-soft);
  transition: border-color .15s, transform .15s;
}
.card:hover { border-color: var(--accent); text-decoration: none; transform: translateY(-2px); }
.card h3 { margin: 0 0 .35rem; color: var(--text); }
.card p { margin: 0 0 .75rem; font-size: .95rem; }

/* Post list */
.posts { display: grid; gap: .25rem; list-style: none; padding: 0; margin: 0; }
.post-item {
  display: flex; justify-content: space-between; align-items: baseline; gap: 1rem;
  padding: .9rem 0; border-bottom: 1px solid var(--border);
}
.post-item a { color: var(--text); font-weight: 500; }
.post-item a:hover { color: var(--accent); }
.post-item time { color: var(--text-soft); font-family: var(--mono); font-size: .82rem; white-space: nowrap; }

/* Article */
.article { padding: 2.5rem 0; }
.article header { margin-bottom: 2rem; }
.article time { font-family: var(--mono); color: var(--text-soft); font-size: .85rem; }
.prose { font-size: 1.05rem; }
.prose :is(p, ul, ol) { color: var(--text); }
.prose h2 { font-size: 1.5rem; }
.prose pre {
  background: var(--bg-soft); border: 1px solid var(--border);
  padding: 1rem; border-radius: var(--radius); overflow-x: auto; font-size: .9rem;
}
.prose code { font-family: var(--mono); font-size: .9em; }
.prose :not(pre) > code {
  background: var(--bg-soft); padding: .1rem .35rem; border-radius: 4px;
}
.prose blockquote {
  margin: 1.5rem 0; padding-left: 1rem; border-left: 3px solid var(--accent);
  color: var(--text-soft);
}
.prose img { max-width: 100%; border-radius: var(--radius); }

/* Footer */
footer {
  border-top: 1px solid var(--border); margin-top: 4rem;
  padding: 2rem 0; color: var(--text-soft); font-size: .9rem;
}
footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 1rem; }

.back { font-family: var(--mono); font-size: .9rem; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; }
.section-head a { font-size: .9rem; }