:root {
  --bg: #111111;
  --bg-elevated: #1a1a1a;
  --border: #2a2a2a;
  --text: #d4d4d4;
  --text-muted: #8a8a8a;
  --text-heading: #f0f0f0;
  --accent: #7eb8da;
  --max-width: 720px;
  --font-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-sans: "Source Sans 3", system-ui, -apple-system, sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a:hover {
  text-decoration: underline;
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(17, 17, 17, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.25rem 1.75rem;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
}

.nav-link {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: color 0.15s ease;
}

.nav-link:hover {
  color: var(--text-heading);
  text-decoration: none;
}

.nav-link--active {
  color: var(--text-heading);
}

/* Layout */

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.section {
  padding-top: 3rem;
}

.section-title {
  color: var(--text-heading);
  font-family: var(--font-serif);
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

.subsection-title {
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin: 2.5rem 0 1.25rem;
}

/* Hero */

.hero {
  padding-top: 1rem;
}

.hero-content {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 2rem;
}

.hero-text {
  flex: 1 1 280px;
}

.hero-label {
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.hero-name {
  color: var(--text-heading);
  font-family: var(--font-serif);
  font-size: 2.25rem;
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.hero-bio {
  color: var(--text);
  margin-bottom: 1.5rem;
}

.hero-bio strong {
  color: var(--text-heading);
  font-weight: 500;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
}

.hero-links a {
  font-size: 0.9rem;
  font-weight: 500;
}

.hero-photo {
  flex: 0 0 auto;
}

.hero-photo img {
  display: block;
  width: 200px;
  height: 200px;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: var(--bg-elevated);
}

/* Entries */

.entries {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.entries--compact {
  margin-top: 2rem;
  gap: 1.5rem;
}

.entry-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 0.25rem 1rem;
  margin-bottom: 0.35rem;
}

.entry-title {
  color: var(--text-heading);
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
}

.entry-title a {
  color: var(--text-heading);
  text-decoration: none;
}

.entry-title a:hover {
  color: var(--accent);
  text-decoration: underline;
}

.entry-list code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.88em;
  color: var(--text-heading);
}

.entry-meta {
  color: var(--text-muted);
  font-size: 0.85rem;
  white-space: nowrap;
}

.entry-org {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.6rem;
}

.entry-detail {
  color: var(--text);
  font-size: 0.95rem;
}

.entry-list {
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.entry-list li {
  color: var(--text);
  font-size: 0.95rem;
}

.entry-list li::marker {
  color: var(--text-muted);
}

/* OSS auto-sync */

.oss-status {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin: -0.75rem 0 1.25rem;
}

.oss-empty {
  color: var(--text-muted);
  font-style: italic;
}

.oss-pr-list {
  list-style: none;
  padding-left: 0;
}

.oss-pr-list li {
  padding-left: 0;
}

.oss-pr-list li::marker {
  content: none;
}

.oss-state {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.oss-state--merged {
  color: #8fbc8f;
}

.oss-state--closed {
  color: var(--text-muted);
}

/* Skills */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
}

.skill-group {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem 1.15rem;
}

.skill-group h3 {
  color: var(--text-heading);
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
}

.skill-group p {
  color: var(--text-muted);
  font-size: 0.875rem;
  line-height: 1.55;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 1.5rem;
  text-align: center;
}

.site-footer p {
  color: var(--text-muted);
  font-size: 0.8rem;
}

/* Responsive */

@media (max-width: 540px) {
  .hero-content {
    flex-direction: column-reverse;
    align-items: center;
    text-align: center;
  }

  .hero-links {
    justify-content: center;
  }

  .entry-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .hero-name {
    font-size: 1.85rem;
  }
}

/* Blog */

.blog-card .entry-title {
  font-size: 1.15rem;
}

.blog-post {
  padding-top: 1rem;
}

.blog-post-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.blog-post-back {
  font-size: 0.875rem;
  margin-bottom: 1.25rem;
}

.blog-post-title {
  color: var(--text-heading);
  font-family: var(--font-serif);
  font-size: 1.75rem;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 0.75rem;
}

.blog-post-meta {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.blog-post-body {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.blog-post-body h2 {
  color: var(--text-heading);
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 0.75rem;
}

.blog-post-body h3 {
  color: var(--text-heading);
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  margin-top: 0.5rem;
}

.blog-post-body p {
  color: var(--text);
  font-size: 0.98rem;
}

.blog-post-body strong {
  color: var(--text-heading);
  font-weight: 500;
}

.blog-post-body ol,
.blog-post-body ul {
  padding-left: 1.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.blog-post-body li {
  color: var(--text);
  font-size: 0.98rem;
}

.blog-post-body li::marker {
  color: var(--text-muted);
}

.blog-post-body code {
  font-family: ui-monospace, "SF Mono", Menlo, monospace;
  font-size: 0.88em;
  color: var(--text-heading);
  background: var(--bg-elevated);
  padding: 0.1em 0.35em;
  border-radius: 3px;
}

.blog-post-body pre {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1rem;
  overflow-x: auto;
}

.blog-post-body pre code {
  background: none;
  padding: 0;
}

@media (max-width: 540px) {
  .blog-post-title {
    font-size: 1.45rem;
  }
}