:root {
  --color-bg: #ffffff;
  --color-text: #222222;
  --color-text-secondary: #555555;
  --color-link: #1a6fb5;
  --color-link-hover: #0d4a7a;
  --color-border: #e0e0e0;
  --color-accent-bg: #f7f7f7;
  --color-award: #b8860b;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --font-heading: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --max-width: 820px;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #1a1a1a;
    --color-text: #e0e0e0;
    --color-text-secondary: #aaaaaa;
    --color-link: #6db3e8;
    --color-link-hover: #9dcaf0;
    --color-border: #333333;
    --color-accent-bg: #242424;
    --color-award: #daa520;
  }
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-bg);
}

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

a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

/* ---------- Layout ---------- */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
}

/* ---------- Header / Profile ---------- */

.profile {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: var(--spacing-lg);
  align-items: start;
  margin-bottom: var(--spacing-xl);
}

.profile-photo {
  width: 180px;
  height: auto;
  border-radius: 6px;
}

.profile-info h1 {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  line-height: 1.2;
}

.profile-info .affiliation {
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.profile-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm) var(--spacing-md);
  margin-top: var(--spacing-sm);
}

.profile-links a {
  font-size: 0.9rem;
}

/* ---------- Nav ---------- */

nav {
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
}

nav ul {
  list-style: none;
  display: flex;
  gap: var(--spacing-md);
}

nav a {
  font-size: 0.95rem;
  font-weight: 500;
}

/* ---------- Sections ---------- */

section {
  margin-bottom: var(--spacing-xl);
}

section h2 {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 600;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

/* ---------- Bio ---------- */

.bio p {
  margin-bottom: var(--spacing-md);
  text-align: justify;
  hyphens: auto;
}

.bio b {
  font-weight: 600;
}

/* ---------- Publication List ---------- */

.pub-list {
  list-style: none;
}

.pub-list li {
  margin-bottom: var(--spacing-md);
  padding-left: 0;
}

.pub-title {
  font-weight: 600;
}

.pub-authors {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.pub-venue {
  font-style: italic;
  font-size: 0.95rem;
}

.pub-award {
  color: var(--color-award);
  font-weight: 600;
  font-size: 0.9rem;
}

.pub-note {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  font-style: italic;
}

.authorship-note {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-md);
}

/* ---------- Talk List ---------- */

.talk-list {
  list-style: none;
}

.talk-list li {
  margin-bottom: var(--spacing-md);
}

.talk-venues {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-top: 0.2rem;
}

/* ---------- Misc ---------- */

.misc-list {
  list-style: none;
}

.misc-list li {
  margin-bottom: var(--spacing-md);
}

.minicourse-links {
  margin-top: var(--spacing-sm);
}

.minicourse-links a {
  margin-right: var(--spacing-sm);
  font-size: 0.9rem;
}

/* ---------- Footer ---------- */

footer {
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-md);
  margin-top: var(--spacing-xl);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

/* ---------- Responsive ---------- */

@media (max-width: 600px) {
  .profile {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .profile-photo {
    margin: 0 auto;
    width: 140px;
  }

  .profile-links {
    justify-content: center;
  }

  nav ul {
    justify-content: center;
  }

  .bio p {
    text-align: left;
  }
}

/* ---------- Print ---------- */

@media print {
  body {
    font-size: 12pt;
    color: #000;
    background: #fff;
  }

  a {
    color: #000;
    text-decoration: underline;
  }

  nav,
  footer {
    display: none;
  }

  .container {
    max-width: 100%;
    padding: 0;
  }
}