@import url('https://fonts.googleapis.com/css2?family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,500;0,8..60,600;0,8..60,700;1,8..60,400&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg: #fdfcf7;
  --bg-alt: #f4f1e8;
  --bg-hover: #f7f4ec;
  --text: #1a1a1a;
  --text-soft: #2e2e2e;
  --muted: #6a6a6a;
  --muted-soft: #8d8d8d;
  --accent: #1e3a5f;
  --accent-bright: #2a4f82;
  --accent-warm: #b56b2d;
  --accent-warm-soft: rgba(181, 107, 45, 0.12);
  --border: #e0dcd1;
  --border-soft: #ebe8de;
  --max: 960px;
  --reading: 680px;

  --serif: 'Source Serif 4', 'Iowan Old Style', Georgia, serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --mono: 'JetBrains Mono', 'SF Mono', Menlo, Consolas, monospace;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--serif);
  color: var(--text);
  background: var(--bg);
  line-height: 1.7;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  position: relative;
}

/* Thin accent stripe at the top of every page */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg,
    var(--accent) 0%,
    var(--accent-bright) 55%,
    var(--accent-warm) 100%);
  z-index: 100;
  pointer-events: none;
}

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

a {
  color: var(--accent-bright);
  text-decoration: none;
  transition: color 0.15s;
}

a:hover {
  color: var(--accent-warm);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

::selection {
  background: var(--accent-warm-soft);
  color: var(--text);
}

/* ── Header ── */

header {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 1.75rem;
  background: var(--bg);
}

.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.site-name {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--text);
  letter-spacing: -0.01em;
}

.site-name:hover {
  color: var(--accent);
  text-decoration: none;
}

.site-name .dim {
  color: var(--muted);
  font-weight: 400;
  font-size: 0.88em;
}

nav {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

nav a {
  font-family: var(--sans);
  font-size: 0.84rem;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.01em;
  position: relative;
}

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

nav a.active::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1.3rem;
  height: 2px;
  background: var(--accent-warm);
}

/* ── Main ── */

main {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3.25rem 1.75rem 2rem;
}

/* ── Profile (home hero) ── */

.profile {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 3.25rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 3rem;
}

.profile-sidebar {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.profile-photo {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1.15rem;
  box-shadow:
    0 1px 2px rgba(30, 58, 95, 0.05),
    0 8px 28px rgba(30, 58, 95, 0.10);
  border: 5px solid var(--bg);
  outline: 1px solid var(--border);
  background: var(--bg-alt);
}

.profile-name {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 600;
  letter-spacing: -0.015em;
  margin-bottom: 0.45rem;
  color: var(--text);
}

.profile-title {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--muted);
  line-height: 1.55;
  margin-bottom: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.005em;
}

.profile-location {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--muted-soft);
  margin-bottom: 1.1rem;
  letter-spacing: 0.02em;
}

.profile-links {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-family: var(--sans);
  font-size: 0.82rem;
}

.profile-links a {
  color: var(--accent-bright);
}

/* ── Profile content (right column) ── */

.profile-content section {
  margin-bottom: 2.25rem;
}

.profile-content section:last-child {
  margin-bottom: 0;
}

.section-label {
  font-family: var(--sans);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.7rem;
}

.section-label::before {
  content: '';
  width: 14px;
  height: 2px;
  background: var(--accent-warm);
  display: inline-block;
  flex-shrink: 0;
}

.profile-content p {
  font-family: var(--serif);
  font-size: 1.06rem;
  line-height: 1.72;
  margin-bottom: 0.9rem;
  color: var(--text-soft);
  max-width: 62ch;
}

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

/* ── Interests list ── */

.interests-list {
  list-style: none;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 2rem;
  margin-top: 0.25rem;
}

.interests-list li {
  font-family: var(--sans);
  font-size: 0.89rem;
  font-weight: 500;
  color: var(--text-soft);
  padding: 0.55rem 0 0.55rem 1.1rem;
  position: relative;
  border-top: 1px solid var(--border-soft);
  letter-spacing: -0.005em;
}

.interests-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.9rem;
  width: 6px;
  height: 6px;
  background: var(--accent-warm);
  border-radius: 1px;
}

.interests-list li .note {
  color: var(--muted-soft);
  font-size: 0.8rem;
  font-style: italic;
  margin-left: 0.3rem;
  font-weight: 400;
}

/* ── Writing header ── */

.writing-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.writing-header .section-label {
  margin-bottom: 0;
}

.view-all {
  font-family: var(--sans);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--accent-bright);
}

/* ── Post list ── */

.post-list {
  list-style: none;
  margin-top: 0.85rem;
}

.post-item {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 1.5rem;
  padding: 1.15rem 0.8rem 1.15rem 0.9rem;
  border-bottom: 1px solid var(--border-soft);
  margin: 0 -0.8rem;
  border-radius: 4px;
  align-items: start;
  transition: background 0.15s ease;
}

.post-item:first-child {
  border-top: 1px solid var(--border-soft);
}

.post-item:hover {
  background: var(--bg-hover);
}

.post-date {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--muted);
  font-weight: 500;
  white-space: nowrap;
  padding-top: 0.3rem;
  letter-spacing: 0.04em;
}

.post-title {
  font-family: var(--serif);
  font-size: 1.08rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.post-title a {
  color: var(--text);
}

.post-title a:hover {
  color: var(--accent);
  text-decoration: none;
}

.post-title span {
  color: var(--text);
}

.post-excerpt {
  font-family: var(--serif);
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.6;
  margin-bottom: 0.55rem;
  max-width: 62ch;
}

.post-tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.tag {
  font-family: var(--sans);
  font-size: 0.7rem;
  font-weight: 500;
  background: transparent;
  color: var(--muted);
  padding: 0.15rem 0.55rem;
  border-radius: 2px;
  border: 1px solid var(--border);
  letter-spacing: 0.03em;
  transition: color 0.15s, border-color 0.15s;
}

.post-item:hover .tag {
  border-color: var(--accent-warm);
  color: var(--accent-warm);
}

/* ── Generic page header (writing / publications / portfolio / unix) ── */

.page-header {
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.25rem;
}

.page-header h1 {
  font-family: var(--serif);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
  margin-bottom: 0.75rem;
  color: var(--text);
}

.page-header p {
  font-family: var(--serif);
  color: var(--muted);
  font-size: 1.02rem;
  line-height: 1.65;
  max-width: 62ch;
  font-style: italic;
}

.stub-note {
  font-family: var(--serif);
  font-size: 1rem;
  color: var(--muted);
  font-style: italic;
  padding: 1.5rem 1.25rem;
  background: var(--bg-alt);
  border-left: 2px solid var(--accent-warm);
  border-radius: 0 4px 4px 0;
}

/* ── CV page ── */

.cv-section {
  margin-bottom: 2.5rem;
}

.cv-section:last-of-type {
  margin-bottom: 0;
}

.cv-section .section-label {
  margin-bottom: 1.1rem;
}

.cv-section .stub-note {
  font-size: 0.95rem;
  padding: 1rem 1.2rem;
}

.cv-body-note {
  font-family: var(--serif);
  font-size: 0.95rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
  font-style: italic;
}

.cv-interests {
  max-width: 620px;
}

/* CV entries (Education, Experience) */
.cv-entries {
  display: grid;
  gap: 0;
  max-width: 640px;
}

.cv-entry {
  padding: 0.85rem 0;
  border-top: 1px solid var(--border-soft);
}

.cv-entry:first-child {
  border-top: none;
  padding-top: 0.25rem;
}

.cv-entry-title {
  font-family: var(--serif);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.35;
  color: var(--text);
  margin-bottom: 0.2rem;
}

.cv-entry-meta {
  font-family: var(--sans);
  font-size: 0.88rem;
  color: var(--muted);
  margin: 0;
}

.cv-entry-sep {
  color: var(--muted-soft);
  margin: 0 0.3rem;
}

.cv-entry-status {
  color: var(--accent-warm);
  font-weight: 500;
}

/* CV simple list (Certifications, etc.) */
.cv-list {
  list-style: none;
  padding: 0;
  max-width: 640px;
}

.cv-list li {
  font-family: var(--serif);
  font-size: 0.98rem;
  color: var(--text-soft);
  padding: 0.6rem 0 0.6rem 1.2rem;
  border-top: 1px solid var(--border-soft);
  position: relative;
  line-height: 1.5;
}

.cv-list li:first-child {
  border-top: none;
}

.cv-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 1rem;
  width: 6px;
  height: 6px;
  background: var(--accent-warm);
  border-radius: 1px;
}

.cv-acronym {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--muted-soft);
  margin-left: 0.35rem;
  letter-spacing: 0.02em;
}

.cv-post-list .post-item {
  margin: 0;
}

.cv-contact {
  display: grid;
  gap: 0.6rem;
  max-width: 520px;
}

.cv-contact-row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 1rem;
  font-family: var(--sans);
  font-size: 0.92rem;
  padding: 0.5rem 0;
  border-top: 1px solid var(--border-soft);
}

.cv-contact-row:first-child {
  border-top: none;
}

.cv-contact-label {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding-top: 0.15rem;
}

/* ── Post page ── */

article {
  max-width: var(--reading);
  margin: 0 auto;
}

.post-header {
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 2.25rem;
}

.post-meta {
  font-family: var(--sans);
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--muted);
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.1rem;
  align-items: center;
  letter-spacing: 0.04em;
}

article h1 {
  font-family: var(--serif);
  font-size: 2.1rem;
  font-weight: 600;
  letter-spacing: -0.025em;
  line-height: 1.22;
  margin-bottom: 0.7rem;
  color: var(--text);
}

.post-lede {
  font-family: var(--serif);
  font-size: 1.15rem;
  color: var(--muted);
  font-style: italic;
  line-height: 1.55;
  max-width: 58ch;
}

/* ── Prose ── */

.prose {
  font-family: var(--serif);
  font-size: 1.08rem;
  line-height: 1.78;
  color: var(--text-soft);
}

.prose p {
  margin-bottom: 1.25rem;
}

.prose h2 {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 600;
  margin: 2.4rem 0 0.85rem;
  letter-spacing: -0.015em;
  color: var(--text);
}

.prose ul {
  margin: 0.85rem 0 1.3rem 1.5rem;
}

.prose li {
  margin-bottom: 0.4rem;
}

.prose code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--bg-alt);
  padding: 0.12em 0.38em;
  border-radius: 3px;
  border: 1px solid var(--border-soft);
  color: var(--accent);
}

.prose pre {
  background: #fbf8f0;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 4px;
  padding: 1.1rem 1.3rem;
  overflow-x: auto;
  margin: 1.4rem 0;
}

.prose pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--text);
}

.prose hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.25rem 0;
}

.prose a {
  color: var(--accent-bright);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  text-decoration-color: var(--border);
  transition: text-decoration-color 0.15s, color 0.15s;
}

.prose a:hover {
  color: var(--accent-warm);
  text-decoration-color: var(--accent-warm);
}

/* ── Footer ── */

footer {
  border-top: 1px solid var(--border);
  padding: 2rem 1.75rem 2.25rem;
  margin-top: 3rem;
  background: var(--bg);
}

.footer-inner {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-copy {
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--muted-soft);
  letter-spacing: 0.01em;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
}

.footer-links a,
.footer-back {
  font-family: var(--sans);
  font-size: 0.8rem;
  color: var(--muted);
  font-weight: 500;
}

.footer-links a:hover,
.footer-back:hover {
  color: var(--accent-warm);
  text-decoration: none;
}

/* ── Scroll to top ── */

.scroll-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 38px;
  height: 38px;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  border-radius: 50%;
  box-shadow: 0 2px 8px rgba(30, 58, 95, 0.08);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, color 0.15s, border-color 0.15s, transform 0.15s;
}

.scroll-top.visible {
  opacity: 1;
  pointer-events: auto;
}

.scroll-top:hover {
  color: var(--accent-warm);
  border-color: var(--accent-warm);
  text-decoration: none;
  transform: translateY(-2px);
}

/* ── Responsive ── */

@media (max-width: 720px) {
  body { font-size: 16px; }

  header {
    padding: 1rem 1.1rem;
  }

  nav {
    gap: 1rem;
  }

  nav a.active::after {
    bottom: -1.1rem;
  }

  main {
    padding: 2.25rem 1.1rem;
  }

  .profile {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-bottom: 2.25rem;
    margin-bottom: 2.25rem;
  }

  .profile-photo {
    width: 160px;
    height: 160px;
  }

  .interests-list {
    grid-template-columns: 1fr;
  }

  .post-item {
    grid-template-columns: 1fr;
    gap: 0.3rem;
    margin: 0;
    padding: 1rem 0;
  }

  .page-header h1 { font-size: 1.75rem; }
  article h1 { font-size: 1.75rem; }

  .footer-inner {
    flex-direction: column;
    text-align: center;
    gap: 0.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}