/* ---- Navigation ---- */

.site-header {
  border-bottom: var(--border-width) solid var(--color-border);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-xl) var(--space-2xl);
  max-width: 960px;
  margin: 0 auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  list-style: none;
}

.nav-links a {
  font-size: 13px;
  font-weight: 400;
  line-height: 1.0;
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: color var(--transition-color);
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--color-text);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  padding: var(--space-sm);
  cursor: pointer;
  color: var(--color-text);
}

.nav-toggle svg {
  display: block;
  width: 20px;
  height: 20px;
}

@media (max-width: 600px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    background: var(--color-surface);
    border-bottom: var(--border-width) solid var(--color-border);
    padding: var(--space-sm) 0;
    z-index: 100;
  }

  .nav-links.is-open {
    display: flex;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    padding: var(--space-md) var(--space-2xl);
  }

  .nav-links a:hover {
    background: var(--color-hover);
  }

  .site-nav {
    position: relative;
  }
}


/* ---- Wordmark ---- */

.wordmark {
  display: flex;
  align-items: center;
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--color-text);
  text-decoration: none;
  white-space: nowrap;
}

.wordmark:hover {
  color: var(--color-text);
}

.wordmark-bar {
  width: 1px;
  height: 16px;
  background: var(--color-text);
  margin: 0 var(--space-sm);
  flex-shrink: 0;
}

@media (max-width: 420px) {
  .wordmark {
    font-size: 11px;
  }

  .wordmark-bar {
    height: 13px;
  }
}


/* ---- Domain cards (home grid) ---- */

.domain-card {
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  text-decoration: none;
  display: block;
  transition: border-color var(--transition-color);
}

.domain-card:hover {
  border-color: var(--color-border-strong);
}

.domain-card h3 {
  margin-bottom: var(--space-sm);
}

.domain-card p {
  font-size: 11px;
  line-height: 1.4;
  color: var(--color-text-muted);
}

.domain-card--wide {
  position: relative;
  margin-bottom: var(--space-md);
  padding-left: 24px;
  overflow: hidden;
}

.domain-card--wide::before {
  content: '';
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  background: var(--color-accent);
  border-radius: 2px;
}

.domain-card--wide h3 {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.02em;
  margin-bottom: var(--space-sm);
}

.domain-card--wide p {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-secondary);
}


/* ---- Publication badges ---- */

.badge {
  display: inline-block;
  font-size: 10px;
  font-weight: 500;
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  letter-spacing: 0;
  vertical-align: 1px;
  margin-left: 6px;
  white-space: nowrap;
}

.badge--preprint {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.badge--in-review {
  background: var(--color-warning-light);
  color: var(--color-warning);
}

.badge--published {
  background: var(--color-border);
  color: var(--color-text);
}


/* ---- Publication entry ---- */

.pub-title-row {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: var(--space-xs);
}

.pub-title {
  font-size: 13px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-text);
}

.pub-meta {
  font-size: 11px;
  line-height: 1.4;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.pub-meta em {
  font-style: italic;
}

.pub-abstract {
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-sm);
}

.pub-links {
  display: flex;
  gap: var(--space-md);
}

.pub-links a {
  font-size: 11px;
}


/* ---- Contact form ---- */

.contact-form label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.contact-form input[type="text"],
.contact-form input[type="email"],
.contact-form textarea {
  display: block;
  width: 100%;
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--color-text);
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  margin-bottom: var(--space-xl);
  transition: border-color var(--transition-color);
}

.contact-form input:hover,
.contact-form textarea:hover {
  border-color: var(--color-border-strong);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  border-color: var(--color-border);
}

.contact-form textarea {
  min-height: 120px;
  resize: vertical;
}

.contact-form button[type="submit"] {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--color-surface);
  background: var(--color-text);
  border: none;
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-xl);
  cursor: pointer;
  transition: background var(--transition-color);
}

.contact-form button[type="submit"]:hover {
  background: var(--color-text-secondary);
}

.contact-form button[type="submit"]:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}


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

.site-footer {
  max-width: 540px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-2xl) 32px;
  text-align: center;
}

.site-footer p {
  font-size: 11px;
  line-height: 1.6;
  color: var(--color-text-muted);
}


/* ---- About page ---- */

.bio-block {
  padding-top: var(--space-3xl);
  border-top: var(--border-width) solid var(--color-border);
}

.bio-block h2 {
  margin-bottom: var(--space-lg);
}

.bio-name {
  font-size: 14px;
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-xs);
}

.bio-role {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}


/* ---- View publications link ---- */

.view-pubs-link {
  font-size: 11px;
  color: var(--color-accent);
  text-decoration: none;
}

.view-pubs-link:hover {
  color: var(--color-accent-dark);
}


/* ---- Screen reader only ---- */

.screen-reader-text {
  clip: rect(1px, 1px, 1px, 1px);
  position: absolute;
  height: 1px;
  width: 1px;
  overflow: hidden;
  word-wrap: normal;
}

.screen-reader-text:focus {
  background-color: var(--color-surface);
  clip: auto;
  display: block;
  font-size: 14px;
  height: auto;
  left: 5px;
  padding: var(--space-lg);
  top: 5px;
  width: auto;
  z-index: 100000;
}