:root {
  --bg: #0d0d0d;
  --surface: #151515;
  --card: #1b1b1b;
  --border: #272727;
  --text: #e0e0e0;
  --text-dim: #888;
  --text-muted: #444;
  --accent: #ffffff;
  --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;
}

*, *::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);
  font-size: 16px;
  line-height: 1.75;
}

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

img { max-width: 100%; display: block; }

/* ── Layout ── */

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ── Navigation ── */

nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 13, 13, 0.93);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 860px;
  margin: 0 auto;
  padding: 0.95rem 1.5rem;
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 1.8rem;
}

.nav-links a {
  color: var(--text-dim);
  font-size: 0.88rem;
  transition: color 0.2s;
}

.nav-links a:hover {
  color: var(--text);
  text-decoration: none;
}

/* ── Sections ── */

section { padding: 5rem 0; }

.section-eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 2.2rem;
}

.section-divider { border: none; border-top: 1px solid var(--border); }

/* ── Hero ── */

#hero {
  padding: 8rem 0 5.5rem;
  border-bottom: 1px solid var(--border);
}

.hero-greeting {
  font-family: var(--mono);
  font-size: 0.88rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

.hero-name {
  font-size: clamp(2.4rem, 6vw, 3.6rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--text);
  margin-bottom: 0.7rem;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
}

.hero-desc {
  max-width: 580px;
  color: var(--text-dim);
  line-height: 1.85;
  margin-bottom: 2.2rem;
}

.btn-row { display: flex; gap: 0.9rem; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 0.58rem 1.3rem;
  border-radius: 4px;
  font-size: 0.88rem;
  font-weight: 500;
  transition: all 0.2s;
}

.btn-primary { background: var(--accent); color: #0d0d0d; }
.btn-primary:hover { background: #cccccc; text-decoration: none; }

.btn-outline {
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent);
  text-decoration: none;
}

/* ── About ── */

#about p {
  max-width: 680px;
  color: var(--text-dim);
  line-height: 1.9;
  margin-bottom: 1rem;
}

.about-meta {
  display: flex;
  gap: 2rem;
  margin-top: 1.8rem;
  flex-wrap: wrap;
}

.about-meta-item {
  font-size: 0.82rem;
  font-family: var(--mono);
  color: var(--text-muted);
}

.about-meta-item span {
  display: block;
  color: var(--text-dim);
  margin-top: 0.2rem;
}

/* ── Blog card grid ── */

.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.2rem;
}

.blog-card-link {
  display: block;
  text-decoration: none;
}

.blog-card-link:hover .blog-card { border-color: var(--accent); }

.blog-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  transition: border-color 0.2s;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.blog-card-image {
  height: 160px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: 0.8rem 1rem;
  flex-shrink: 0;
}

.blog-card-image img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.blog-card-category {
  position: relative;
  z-index: 1;
  font-family: var(--mono);
  font-size: 0.68rem;
  color: rgba(255, 255, 255, 0.65);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: rgba(0, 0, 0, 0.45);
  padding: 0.18rem 0.5rem;
  border-radius: 2px;
}

.blog-card-body {
  padding: 1rem 1.2rem 1.25rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.blog-card-title {
  font-size: 0.93rem;
  font-weight: 600;
  color: var(--text);
  line-height: 1.45;
  margin-bottom: 0.5rem;
}

.blog-card-date {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--text-muted);
}

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

.tag {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: 3px;
  font-family: var(--mono);
}

/* ── Project cards ── */

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.1rem;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  transition: border-color 0.2s;
}

.project-card:hover { border-color: var(--accent); }

.project-card h3 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.project-card p {
  font-size: 0.87rem;
  color: var(--text-dim);
  line-height: 1.75;
  flex: 1;
  margin-bottom: 1.1rem;
}

.project-card .tags { margin-bottom: 1.1rem; }

.project-links { display: flex; gap: 1rem; }
.project-links a {
  font-size: 0.8rem;
  font-family: var(--mono);
}

/* ── Blog list (used on index + blog page) ── */

.blog-list {
  border-top: 1px solid var(--border);
}

.blog-item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.2rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
}

.blog-item a { color: var(--text); font-size: 0.97rem; }
.blog-item a:hover { color: var(--accent); text-decoration: none; }

.blog-item-meta {
  font-size: 0.75rem;
  font-family: var(--mono);
  color: var(--text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ── Blog post page ── */

.post-wrapper { padding: 4rem 0 6rem; }

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.82rem;
  font-family: var(--mono);
  color: var(--text-dim);
  margin-bottom: 2.5rem;
}
.back-link:hover { color: var(--accent); text-decoration: none; }

.post-title {
  font-size: clamp(1.65rem, 4.5vw, 2.4rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 0.9rem;
}

.post-meta {
  font-size: 0.78rem;
  font-family: var(--mono);
  color: var(--text-muted);
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.post-body { max-width: 680px; }

.post-body h2 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text);
  margin: 2.5rem 0 0.7rem;
}

.post-body h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text);
  margin: 1.8rem 0 0.5rem;
}

.post-body p {
  color: var(--text-dim);
  line-height: 1.9;
  margin-bottom: 1.2rem;
}

.post-body ul, .post-body ol {
  color: var(--text-dim);
  padding-left: 1.4rem;
  margin: 0.5rem 0 1.2rem;
}

.post-body li { margin-bottom: 0.45rem; line-height: 1.75; }

.post-body code {
  font-family: var(--mono);
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 0.15em 0.4em;
  border-radius: 3px;
  font-size: 0.87em;
}

.post-body pre {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.3rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.post-body pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.86rem;
  color: var(--text-dim);
}

.post-body blockquote {
  border-left: 3px solid var(--accent);
  padding: 0.5rem 0 0.5rem 1.2rem;
  margin: 1.5rem 0;
  color: var(--text-dim);
  font-style: italic;
}

.post-body strong { color: var(--text); font-weight: 600; }

/* ── Footer ── */

footer {
  border-top: 1px solid var(--border);
  padding: 2.2rem 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.footer-copy { font-size: 0.82rem; color: var(--text-muted); }

.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { font-size: 0.82rem; color: var(--text-dim); }
.footer-links a:hover { color: var(--accent); text-decoration: none; }

/* ── Callout boxes (definition / key / warn) ── */

.callout {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-left: 3px solid rgba(255, 255, 255, 0.25);
  border-radius: 0 4px 4px 0;
  padding: 1rem 1.2rem;
  margin: 1.8rem 0;
}

.callout-title {
  font-family: var(--mono);
  font-size: 0.71rem;
  color: rgba(255, 255, 255, 0.45);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.7rem;
}

.callout p,
.callout ul,
.callout ol { margin-bottom: 0.5rem; }

/* ── Post body tables ── */

.post-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.85rem;
}

.post-body th {
  text-align: left;
  padding: 0.5rem 0.75rem;
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.71rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
}

.post-body td {
  padding: 0.5rem 0.75rem;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  line-height: 1.6;
}

.post-body tr:last-child td { border-bottom: none; }

.post-body table caption {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: var(--mono);
  text-align: left;
  margin-bottom: 0.5rem;
}

/* ── Page header (blog, projects) ── */

.page-header {
  padding: 5rem 0 3rem;
  border-bottom: 1px solid var(--border);
}

.page-header p {
  max-width: 540px;
  color: var(--text-dim);
  margin-top: 0.8rem;
}

/* ── Responsive ── */

@media (max-width: 600px) {
  .nav-links { gap: 1.2rem; }
  section { padding: 3.5rem 0; }
  #hero { padding: 5rem 0 3.5rem; }
  .about-meta { gap: 1.2rem; }

  .blog-item {
    flex-direction: column;
    gap: 0.15rem;
  }

  .footer-inner { flex-direction: column; align-items: flex-start; }
}