:root {
  --bg: #12141a;
  --bg-elev: #1a1f2b;
  --fg: #d5d8e2;
  --muted: #98a1b3;
  --link: #8ea5ff;
  --border: #2a3242;
  --accent: #6ea8fe;
  --max-width: 56rem;
}

html[data-theme="light"] {
  --bg: #f7f9fd;
  --bg-elev: #ffffff;
  --fg: #1a2130;
  --muted: #556070;
  --link: #2e5ac7;
  --border: #d8deea;
  --accent: #3a6fe0;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.7 "Inter", "Segoe UI", Roboto, sans-serif;
}

a {
  color: var(--link);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.wrap {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: color-mix(in srgb, var(--bg) 92%, transparent);
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.9rem 0;
}

.brand {
  font-weight: 700;
  color: var(--fg);
}

.site-nav {
  display: flex;
  gap: 0.9rem;
  margin-right: auto;
}

#theme-toggle {
  border: 1px solid var(--border);
  background: var(--bg-elev);
  color: var(--fg);
  border-radius: 999px;
  padding: 0.35rem 0.8rem;
  cursor: pointer;
}

.content {
  padding: 2rem 0 3rem;
}

.hero h1 {
  margin: 0 0 0.25rem;
}

.hero p {
  margin: 0;
  color: var(--muted);
}

.post-list {
  margin-top: 2rem;
  display: grid;
  gap: 1rem;
}

.post-card,
.post {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.1rem;
}

h1,
h2,
h3 {
  line-height: 1.3;
}

time,
.meta {
  color: var(--muted);
  font-size: 0.9rem;
}

.term-list {
  list-style: none;
  margin: 1.5rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.term-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--bg-elev);
  padding: 0.7rem 0.9rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.25rem 0 2rem;
  color: var(--muted);
}

@media (max-width: 700px) {
  .site-header .wrap {
    flex-wrap: wrap;
  }
}