* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

:root {
  --bg: oklch(98% 0.006 80);
  --text: oklch(22% 0.012 70);
  --muted: oklch(48% 0.01 70);
  --muted-strong: oklch(32% 0.01 70);
  --accent: oklch(50% 0.13 40);
  --accent-ink: oklch(98% 0.006 80);
  --border: oklch(88% 0.008 70);
  --card: oklch(99% 0.003 80);
  --tag-bg: oklch(94% 0.02 40);
}
html[data-theme="dark"] {
  --bg: oklch(19% 0.008 70);
  --text: oklch(93% 0.006 80);
  --muted: oklch(66% 0.012 70);
  --muted-strong: oklch(78% 0.01 70);
  --accent: oklch(74% 0.12 40);
  --accent-ink: oklch(16% 0.008 70);
  --border: oklch(32% 0.012 70);
  --card: oklch(23% 0.01 70);
  --tag-bg: oklch(30% 0.03 40);
}

.portfolio {
  background: var(--bg);
  color: var(--text);
  font-family: 'Work Sans', system-ui, sans-serif;
  min-height: 100vh;
  transition: background 0.2s ease, color 0.2s ease;
}
.portfolio .serif { font-family: 'Spectral', Georgia, serif; }
.portfolio a { color: var(--accent); text-decoration: none; }
.portfolio a:hover { text-decoration: underline; }
.portfolio .accent { color: var(--accent); }
.portfolio .muted { color: var(--muted); }
.portfolio .section { padding: 72px 100px; max-width: 1080px; margin: 0 auto; }
.portfolio .btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 15px 28px; font-size: 15px; font-weight: 500; cursor: pointer;
  border-radius: 2px; border: none; font-family: inherit;
}
.portfolio .btn-primary { background: var(--accent); color: var(--accent-ink); }
.portfolio .btn-ghost { background: transparent; color: var(--text); border: 1px solid var(--border); }
.portfolio .divider { height: 1px; background: var(--border); border: none; margin: 0; }
.portfolio .card { background: var(--card); border: 1px solid var(--border); padding: 26px 28px; }
.portfolio .tag {
  font-size: 12px; font-weight: 500; color: var(--accent); background: var(--tag-bg);
  padding: 4px 10px; border-radius: 2px; display: inline-block;
}
.portfolio .icon-btn {
  width: 40px; height: 40px; border-radius: 999px; border: 1px solid var(--border);
  background: transparent; display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--text); flex-shrink: 0;
}
.portfolio .icon-btn svg { display: block; }
.portfolio .icon-btn .icon-moon { display: none; }
html[data-theme="dark"] .portfolio .icon-btn .icon-sun { display: none; }
html[data-theme="dark"] .portfolio .icon-btn .icon-moon { display: flex; }

.portfolio .nav-wrap {
  display: flex; align-items: center; justify-content: space-between; padding: 32px 100px;
  max-width: 1280px; margin: 0 auto; gap: 20px; flex-wrap: wrap;
}
.portfolio .nav-links { display: flex; gap: 34px; align-items: center; flex-wrap: wrap; }
.portfolio .nav-links a { font-size: 14px; color: var(--muted-strong); }

.portfolio .experience-row { display: grid; grid-template-columns: 240px 1fr; gap: 40px; }
.portfolio .experience-row ul { margin: 0; padding-left: 20px; color: var(--muted-strong); line-height: 1.8; font-size: 16px; }

.portfolio .two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 64px; }
.portfolio .now-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; }
.portfolio .project-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 16px; }

.portfolio .eyebrow {
  font-family: 'Spectral', Georgia, serif; font-size: 14px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted);
}

@media (max-width: 900px) {
  .portfolio .section, .portfolio .nav-wrap { padding-left: 32px; padding-right: 32px; }
  .portfolio .nav-links { gap: 20px; }
  .portfolio h1 { font-size: 36px !important; }
  .portfolio .experience-row { grid-template-columns: 1fr; gap: 12px; }
  .portfolio .two-col { grid-template-columns: 1fr; gap: 40px; }
  .portfolio .now-grid, .portfolio .project-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .portfolio .section, .portfolio .nav-wrap { padding-left: 20px; padding-right: 20px; padding-top: 48px; padding-bottom: 48px; }
  .portfolio .now-grid, .portfolio .project-grid { grid-template-columns: 1fr; }
  .portfolio .nav-links { font-size: 13px; gap: 16px; }
}

/* --- Blog listing --- */
.portfolio .post-list-item { display: block; padding: 40px 0; border-top: 1px solid var(--border); }
.portfolio .post-list-item:last-child { border-bottom: 1px solid var(--border); }
.portfolio .post-list-item:hover .post-list-title { text-decoration: underline; }
.portfolio .post-list-title { color: var(--text); text-decoration: none; }

/* --- Post / article prose --- */
.portfolio .prose { font-size: 17px; line-height: 1.75; color: var(--muted-strong); }
.portfolio .prose h1, .portfolio .prose h2, .portfolio .prose h3 {
  font-family: 'Spectral', Georgia, serif; color: var(--text); font-weight: 600; line-height: 1.3;
  margin: 44px 0 18px 0;
}
.portfolio .prose h1 { font-size: 30px; }
.portfolio .prose h2 { font-size: 25px; }
.portfolio .prose h3 { font-size: 20px; }
.portfolio .prose p { margin: 0 0 24px 0; }
.portfolio .prose a { color: var(--accent); }
.portfolio .prose img { max-width: 100%; border: 1px solid var(--border); margin: 8px 0 32px 0; }
.portfolio .prose ul, .portfolio .prose ol { margin: 0 0 24px 0; padding-left: 22px; }
.portfolio .prose li { margin-bottom: 8px; }
.portfolio .prose blockquote {
  margin: 0 0 24px 0; padding: 4px 24px; border-left: 3px solid var(--accent);
  color: var(--muted); font-style: italic;
}
.portfolio .prose code {
  font-family: ui-monospace, 'IBM Plex Mono', monospace; font-size: 0.88em;
  background: var(--card); border: 1px solid var(--border); padding: 2px 6px; border-radius: 2px;
}
.portfolio .prose pre {
  background: var(--card); border: 1px solid var(--border); padding: 20px 22px;
  overflow-x: auto; margin: 0 0 24px 0;
}
.portfolio .prose pre code { border: none; padding: 0; background: none; }
.portfolio .post-header { margin-bottom: 48px; }
.portfolio .post-nav {
  display: flex; justify-content: space-between; gap: 20px; margin-top: 56px;
  padding-top: 32px; border-top: 1px solid var(--border); flex-wrap: wrap;
}