/* kuncoro.io–inspired minimal theme */
:root {
  --bg: #fafafa;
  --text: #1a1a1a;
  --text-muted: #555;
  --link: #0066cc;
  --link-hover: #004499;
  --border: #e5e5e5;
  --card-bg: #fff;
  --radius: 8px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--card-bg);
  padding: 1.25rem 2rem;
}

.site-header-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  max-width: 900px;
  margin: 0 auto;
}

.site-logo {
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
}

.site-logo:hover {
  color: var(--link);
}

.site-nav {
  display: flex;
  gap: 1.5rem;
}

.site-nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
}

.site-nav a:hover {
  color: var(--link);
}

.main-content {
  max-width: 720px;
  margin: 0 auto;
  padding: 2.5rem 2rem 3rem;
}

.main-content--wide {
  max-width: 900px;
}

.intro {
  margin-bottom: 3rem;
}

.intro h1 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 1rem;
}

.intro p {
  margin: 0 0 1rem;
  color: var(--text);
}

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

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

.intro a:hover {
  text-decoration: underline;
}

.section {
  margin-bottom: 3rem;
}

.section h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.25rem;
}

.section-link {
  margin: 0 0 1rem;
  font-size: 0.9rem;
}

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

.section-link a:hover {
  text-decoration: underline;
}

.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.post-list li {
  margin-bottom: 1rem;
}

.post-list a {
  color: var(--text);
  text-decoration: none;
  display: block;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
}

.post-list a:hover {
  color: var(--link);
}

.post-list strong {
  font-weight: 600;
}

.post-desc {
  display: block;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.talk-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 1rem;
}

.talk-card {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  text-decoration: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.talk-card:hover {
  border-color: var(--link);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.talk-thumb {
  width: 120px;
  height: 68px;
  min-width: 120px;
  background: var(--border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.talk-title {
  font-weight: 600;
  display: block;
}

.talk-meta {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: block;
  margin-top: 0.25rem;
}

.connect p {
  margin: 0 0 1rem;
}

.social-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.5rem;
}

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

.social-links a:hover {
  text-decoration: underline;
}

.site-footer {
  text-align: center;
  padding: 2rem;
  border-top: 1px solid var(--border);
  font-size: 0.9rem;
  color: var(--text-muted);
}

.back-top {
  display: inline-block;
  margin-bottom: 0.5rem;
  color: var(--link);
  text-decoration: none;
}

.back-top:hover {
  text-decoration: underline;
}

/* Post layout (single post page) */
.post-header {
  margin-bottom: 1.5rem;
}

.post-header h1 {
  font-size: 1.75rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.post-meta {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin: 0;
}

.post-content {
  line-height: 1.7;
}

.post-content h2 {
  font-size: 1.2rem;
  margin: 1.5rem 0 0.5rem;
}

.post-content p {
  margin: 0 0 1rem;
}

.post-content code {
  background: var(--border);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.9em;
}

.post-content pre {
  overflow-x: auto;
  padding: 1rem;
  background: var(--border);
  border-radius: var(--radius);
}

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

/* Projects page – card grid */
.projects-page {
  max-width: 900px;
  margin: 0 auto;
}

.projects-title,
.writing-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.writing-page .page-intro {
  margin-bottom: 1.5rem;
}

.writing-cards {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.writing-card {
  margin: 0;
  padding: 1.25rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, box-shadow 0.2s;
  user-select: text;
}

.writing-card:hover {
  border-color: var(--border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.writing-card-title {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.writing-card-title a {
  color: var(--link);
  text-decoration: none;
}

.writing-card-title a:hover {
  text-decoration: underline;
}

.writing-card-desc {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-muted);
  margin: 0 0 0.5rem;
}

.writing-card-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0;
}

.writing-section-title {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 1rem;
}

.page-intro {
  font-size: 0.9375rem;
  line-height: 1.55;
  color: var(--text-muted);
  margin: 0 0 1.5rem;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.project-card {
  margin: 0;
  padding: 1.25rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, box-shadow 0.2s;
  user-select: text;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: var(--border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.project-name {
  font-size: 1.05rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

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

.project-name a:hover {
  text-decoration: underline;
}

.project-desc {
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-muted);
  margin: 0 0 0.75rem;
}

.project-links {
  font-size: 0.85rem;
  margin: 0 0 0.75rem;
}

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

.project-links a:hover {
  text-decoration: underline;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  list-style: none;
  padding: 0;
  margin: 0;
  margin-top: auto;
}

.project-tag {
  display: inline-block;
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  background: var(--bg);
  color: var(--text-muted);
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* Open source contributions page */
.opensource-page {
  max-width: 900px;
  margin: 0 auto;
}

.opensource-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
}

.contribution-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  padding: 0;
  margin: 0;
}

.contribution-card {
  margin: 0;
  padding: 1.25rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s, box-shadow 0.2s;
  user-select: text;
  display: flex;
  flex-direction: column;
}

.contribution-card:hover {
  border-color: var(--border);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
}

.contribution-repo {
  font-size: 0.95rem;
  font-weight: 600;
  margin: 0 0 0.5rem;
  font-family: ui-monospace, monospace;
}

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

.contribution-repo a:hover {
  text-decoration: underline;
}

.contribution-project-desc,
.contribution-desc {
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--text-muted);
  margin: 0 0 0.5rem;
}

.contribution-desc {
  color: var(--text);
  margin-bottom: 0.75rem;
}

.contribution-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  list-style: none;
  padding: 0;
  margin: 0;
  margin-top: auto;
}

.contribution-tag {
  display: inline-block;
  font-size: 0.7rem;
  padding: 0.2rem 0.5rem;
  background: var(--bg);
  color: var(--text-muted);
  border-radius: 4px;
  border: 1px solid var(--border);
}

@media (max-width: 640px) {
  .site-header {
    padding: 1rem;
  }

  .main-content {
    padding: 1.5rem 1rem 2rem;
  }

  .talk-card {
    flex-direction: column;
  }

  .talk-thumb {
    width: 100%;
    min-width: unset;
    height: 120px;
  }

  .project-grid {
    grid-template-columns: 1fr;
  }

  .contribution-grid {
    grid-template-columns: 1fr;
  }

  .writing-cards {
    grid-template-columns: 1fr;
  }
}