:root {
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-accent: #60a5fa;
  --bg-primary: #111827;
  --bg-secondary: #1f2937;
  --bg-accent: #374151;
  --border-color: rgba(249, 250, 251, 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3);
  --shadow-lg: 0 20px 25px -5px rgb(0 0 0 / 0.4);
  --mono-font: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  box-sizing: border-box;
}

*, *::before, *::after {
  box-sizing: inherit;
}

body {
  font-family: Inter, sans-serif;
  font-feature-settings: 'liga' 1, 'calt' 1; /* fix for Chrome */
  margin: 0;
  line-height: 1.7;
  background: var(--bg-primary);
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

main {
  flex: 1;
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  padding: 2rem 2rem;
}

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

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

footer {
  text-align: center;
  color: var(--text-secondary);
  font-family: var(--mono-font);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2rem 2rem 2rem;
}

footer p {
  margin-block: 0.25em;
}

footer a {
  color: var(--text-secondary);
}

/* ── Home ─────────────────────────────────────────────── */

.home-container {
  padding: 2rem 0 2rem;
  border-bottom: 1px solid var(--border-color);
}

.home-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  margin-bottom: 2.5rem;
}

.home-avatar {
  width: 110px;
  height: 110px;
  border-radius: 2rem;
  object-fit: cover;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-lg);
}

.home-title {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  margin: 0 0 0.5rem;
  background: linear-gradient(to right, #fff, var(--text-secondary));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.home-subtitle {
  font-family: var(--mono-font);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-accent);
  margin-bottom: 1rem;
}

.home-socials {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.85rem;
  font-family: var(--mono-font);
}

.dot-separator {
  color: var(--bg-accent);
  font-size: 0.8rem;
  user-select: none;
}

.home-intro {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 720px;
}

/* ── Articles ─────────────────────────────────────────── */

.article-section {
  margin-top: 2rem;
}

.article-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 1.5rem;
}

.article-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  overflow: hidden;
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  text-decoration: none;
  transition: border-color 0.18s ease, box-shadow 0.25s ease;
}

.article-card:hover {
  border-color: var(--text-accent);
  box-shadow: var(--shadow-lg);
}

.article-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-bottom: 1px solid var(--border-color);
}

.article-card-content {
  padding: 1.5rem 1rem;
}

.article-card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0;
}

.article-card-date {
  color: var(--text-secondary);
  font-size: 0.75rem;
  margin-bottom: 0.75rem;
}

.article-card-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

.article-card-content a {
  color: var(--text-accent);
  text-decoration: underline;
}

.article-card-content a:hover {
  color: var(--text-primary);
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.75rem;
  margin-bottom: 0.75rem;
}

.tag-pill {
  background: var(--bg-accent);
  color: var(--text-primary);
  padding: 0.15rem 0.5rem;
  border-radius: 9999px; /* Effectively full rounded corners */
  font-size: 0.65rem;
  white-space: nowrap;
}

.tag-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.tag-filter-pill {
  cursor: pointer;
  background: var(--bg-secondary);
  color: var(--text-secondary);
  padding: 0.15rem 0.6rem;
  border-radius: 9999px;
  font-size: 0.7rem;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.tag-filter-pill:hover {
  background: var(--bg-accent);
  color: var(--text-primary);
  border-color: var(--text-accent);
}

.tag-filter-pill.active {
  background: var(--text-accent);
  color: var(--bg-primary);
  font-weight: 600;
  border-color: var(--text-accent);
}


/* ── Content body ─────────────────────────────────────── */

.content-body {
  padding: 2.5rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 1rem;
  margin: 2rem 0;
}

.content-link {
  color: var(--text-secondary);
  font-family: var(--mono-font);
  font-size: 0.85rem;
  margin-bottom: 0.75rem;
  display: block;
}

.article-title {
  font-size: 2rem;
  font-weight: 700;
  margin-top: 0.5rem;
  margin-bottom: 0.25rem;
  line-height: 1.2;
}

.article-date {
  color: var(--text-secondary);
  font-size: 0.85rem;
  margin-top: 0.1rem;
  margin-bottom: 1.5rem;
  display: block;
}

.content-body pre {
  background: #0d1117;
  padding: 1.5rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
  font-size: 0.9rem;
  overflow-x: auto;
}

.content-body blockquote {
  border-left: 2px solid var(--text-accent);
  background: rgba(96, 165, 250, 0.05);
  font-style: italic;
  margin: 1.5rem 0;
  padding: 0.5rem 1.5rem;
}

.content-body img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.5rem auto;
  border-radius: 0.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

/* ── Mobile adjustments (below ~768px) ────────────────── */

@media (max-width: 768px) {
  main {
    padding: 2.5rem 1.25rem;
  }

  .home-header {
    flex-direction: column-reverse;
    align-items: flex-start;
    gap: 1.5rem;
    margin-bottom: 2rem;
  }

  .home-avatar {
    width: 90px;
    height: 90px;
    border-radius: 1.25rem;
  }

  .home-title {
    font-size: 2.4rem;
  }

  .home-subtitle {
    font-size: 0.8rem;
  }

  .home-socials {
    font-size: 0.8rem;
    gap: 0.9rem;
  }

  .home-intro {
    font-size: 1.05rem;
  }

  .article-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .article-card img {
    height: 180px;
  }

  .article-card-content {
    padding: 1.25rem 1rem;
  }

  .content-body {
    padding: 1.5rem;
    margin: 1.5rem 0;
  }

  footer {
    padding: 2.5rem 1.25rem 3.5rem;
    font-size: 0.72rem;
  }
}

@media (max-width: 480px) {
  main {
    padding: 2rem 1rem;
  }

  .home-title {
    font-size: 2.1rem;
  }

  .home-avatar {
    width: 80px;
    height: 80px;
  }

  .article-card img {
    height: 160px;
  }
}