:root {
  color-scheme: light dark;
  --bg: #fffdf8;
  --surface: #ffffff;
  --text: #22252a;
  --muted: #636a75;
  --border: #e4e0d8;
  --accent: #205f8f;
  --accent-strong: #17466b;
  --chip: #eef4f8;
  --shadow: 0 1px 3px rgb(0 0 0 / 6%), 0 8px 24px rgb(0 0 0 / 4%);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181b;
    --surface: #1e2126;
    --text: #e8eaee;
    --muted: #a3abb6;
    --border: #33383f;
    --accent: #7db7de;
    --accent-strong: #9dcbec;
    --chip: #262b31;
    --shadow: 0 1px 3px rgb(0 0 0 / 25%), 0 8px 24px rgb(0 0 0 / 18%);
  }
}

* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1.03rem;
  line-height: 1.65;
}

a {
  color: var(--accent);
  text-decoration: none;
  text-underline-offset: 2px;
}

a:hover,
a:focus-visible {
  color: var(--accent-strong);
  text-decoration: underline;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.site-header-inner {
  max-width: 52rem;
  margin: auto;
  padding: 0.9rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.site-title {
  font-weight: 750;
  font-size: 1.08rem;
  color: var(--text);
  letter-spacing: -0.015em;
}

.site-header nav {
  display: flex;
  gap: 0.85rem;
  font-size: 0.94rem;
  color: var(--muted);
}

.site-main {
  max-width: 52rem;
  margin: auto;
  padding: 2.2rem 1.25rem 3rem;
}

.site-footer {
  max-width: 52rem;
  margin: auto;
  padding: 1.5rem 1.25rem 2.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 0.4rem;
}

.page-heading {
  margin-bottom: 1.5rem;
}

.page-heading h1,
.post-header h1 {
  margin: 0 0 0.4rem;
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  line-height: 1.2;
  letter-spacing: -0.025em;
}

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

.post-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.8rem;
  padding: 1.15rem 1.25rem 1.05rem;
  box-shadow: var(--shadow);
}

.post-item h2 {
  margin: 0.35rem 0 0.5rem;
  font-size: 1.32rem;
  line-height: 1.3;
  letter-spacing: -0.015em;
}

.post-item h2 a {
  color: var(--text);
}

.post-item h2 a:hover {
  color: var(--accent);
  text-decoration: none;
}

.post-meta,
.meta-separator {
  color: var(--muted);
  font-size: 0.92rem;
}

.category {
  display: inline-block;
  background: var(--chip);
  border-radius: 999px;
  padding: 0.08rem 0.58rem;
  margin-right: 0.25rem;
  font-size: 0.82rem;
}

.post-summary {
  color: var(--muted);
}

.post-summary p:last-child {
  margin-bottom: 0;
}

.read-more {
  display: inline-block;
  margin-top: 0.2rem;
  font-weight: 650;
  font-size: 0.93rem;
}

.single-post {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 0.9rem;
  padding: clamp(1.2rem, 4vw, 2.4rem);
  box-shadow: var(--shadow);
}

.post-header {
  margin-bottom: 1.8rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.post-header .post-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4 {
  line-height: 1.25;
  letter-spacing: -0.015em;
}

.post-content h2 {
  margin-top: 2rem;
  font-size: 1.45rem;
}

.post-content h3 {
  margin-top: 1.7rem;
  font-size: 1.2rem;
}

.post-content p,
.post-content li {
  overflow-wrap: anywhere;
}

.post-content img {
  max-width: 100%;
  height: auto;
  border-radius: 0.35rem;
}

.post-content pre {
  overflow-x: auto;
  background: var(--chip);
  padding: 0.9rem;
  border-radius: 0.5rem;
  font-size: 0.92em;
  line-height: 1.45;
}

.post-content code {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.92em;
}

.post-content blockquote {
  margin: 1.5rem 0;
  padding: 0.1rem 1.1rem;
  border-left: 3px solid var(--accent);
  color: var(--muted);
}

.post-footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  background: var(--chip);
  color: var(--muted);
  padding: 0.12rem 0.62rem;
  border-radius: 999px;
  font-size: 0.85rem;
}

.comments {
  margin-top: 2.4rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--border);
}

.comments h2 {
  margin: 0 0 1rem;
  font-size: 1.2rem;
}

.comment {
  background: var(--chip);
  border-radius: 0.65rem;
  padding: 0.85rem 1rem;
  margin-bottom: 0.7rem;
}

.comment-meta {
  margin: 0 0 0.3rem;
  font-size: 0.88rem;
  color: var(--muted);
}

.comment-content {
  overflow-wrap: anywhere;
}

.pagination {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.35rem;
  list-style: none;
  padding: 0;
  margin: 2rem 0 0;
}

.page-link {
  display: inline-block;
  min-width: 2.2rem;
  padding: 0.35rem 0.55rem;
  border: 1px solid var(--border);
  border-radius: 0.45rem;
  background: var(--surface);
  color: var(--accent);
  text-align: center;
}

.page-item.active .page-link {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.page-item.disabled .page-link {
  color: var(--muted);
  opacity: 0.55;
}

@media (max-width: 480px) {
  .site-header-inner {
    align-items: flex-start;
    flex-direction: column;
  }

  .site-main {
    padding-top: 1.4rem;
  }

  .single-post {
    padding: 1.05rem;
  }
}