:root {
  --color-bg: #f7f8fa;
  --color-surface: #ffffff;
  --color-text: #1b2430;
  --color-muted: #5a6472;
  --color-accent: #1f5f8b;
  --color-accent-dark: #143f5c;
  --color-border: #e1e5ea;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 2rem 1.25rem 4rem;
}

/* Header / nav */

.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.site-nav {
  max-width: 860px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.site-nav .brand {
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--color-text);
  text-decoration: none;
}

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

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

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-accent);
}

/* Footer */

.site-footer {
  max-width: 860px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
  color: var(--color-muted);
  font-size: 0.85rem;
}

/* Home / hero */

.hero {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.headshot {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  flex-shrink: 0;
}

.hero-text h1 {
  margin: 0 0 0.75rem;
  font-size: 1.75rem;
}

.bio {
  color: var(--color-text);
  margin-bottom: 1rem;
}

.cv-button {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--color-accent);
  color: #fff;
  text-decoration: none;
  border-radius: 6px;
  font-size: 0.9rem;
}

.cv-button:hover {
  background: var(--color-accent-dark);
}

.quicklinks {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 1.25rem 0 0;
  margin: 0;
  border-top: 1px solid var(--color-border);
}

.quicklinks a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-muted);
  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
}

.quicklinks svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.quicklinks a:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  background: var(--color-bg);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Generic page */

.page h1 {
  margin-top: 0;
}

.section-intro {
  color: var(--color-muted);
}

/* Portfolio */

.portfolio-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.portfolio-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 1.25rem;
  flex-wrap: wrap;
}

.portfolio-figure {
  width: 160px;
  height: 120px;
  object-fit: cover;
  border-radius: 6px;
  border: 1px solid var(--color-border);
  flex-shrink: 0;
}

.portfolio-body h2 {
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
}

.portfolio-body p {
  margin: 0;
  color: var(--color-text);
}

/* Publications */

.pub-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.pub-item {
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 1rem;
}

.pub-title {
  font-weight: 600;
  margin: 0 0 0.25rem;
}

.pub-meta {
  color: var(--color-muted);
  margin: 0 0 0.25rem;
  font-size: 0.95rem;
}

.pub-links a {
  color: var(--color-accent);
  text-decoration: none;
  font-size: 0.9rem;
}

.pub-note {
  color: var(--color-muted);
  font-size: 0.85rem;
  font-style: italic;
  margin: 0 0 0.35rem;
}

.pub-status {
  display: inline-block;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-muted);
  font-size: 0.8rem;
  padding: 0.1rem 0.5rem;
  border-radius: 4px;
}

/* Blog */

.post-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.post-item {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0.9rem;
}

.post-item a {
  color: var(--color-accent);
  text-decoration: none;
  font-weight: 500;
}

.post-date {
  color: var(--color-muted);
  font-size: 0.85rem;
  white-space: nowrap;
}

.post-header {
  margin-bottom: 1.5rem;
}

.post-header .post-date {
  display: block;
  margin-top: 0.25rem;
}

@media (max-width: 480px) {
  .hero {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }
  .portfolio-item {
    flex-direction: column;
  }
  .portfolio-figure {
    width: 100%;
    height: auto;
  }
}