/* Who's Who in Goldbach Research - custom styling
   Design: simple, clear, academic. White background, dark text, blue links.
   Typography: serif body, sans headings. Tier colors imported from the
   master pipeline so map dots and table accents stay consistent.
*/

:root {
  --wwigr-bg:        #ffffff;
  --wwigr-text:      #1a1a1a;
  --wwigr-muted:     #555555;
  --wwigr-link:      #0b5ed7;
  --wwigr-link-hover:#0a3d80;
  --wwigr-accent:    #003366;
  --wwigr-rule:      #d8d8d8;

  /* Tier colors (match build_names_panel) */
  --tier-top:      #b22222;  /* firebrick */
  --tier-mid:      #cd9b1d;  /* goldenrod3 */
  --tier-lower:    #5d2e8c;  /* purple4 */
  --tier-isolated: #4682b4;  /* steelblue */
}

body {
  background: var(--wwigr-bg);
  color: var(--wwigr-text);
  font-family: "Source Serif Pro", "Times New Roman", Georgia, serif;
  font-size: 16px;
  line-height: 1.55;
  max-width: 1100px;
  margin: 0 auto;
}

h1, h2, h3, h4 {
  font-family: "Source Sans Pro", "Helvetica Neue", Arial, sans-serif;
  font-weight: 600;
  color: var(--wwigr-accent);
  letter-spacing: -0.01em;
}

h1 { font-size: 2.0rem; margin-top: 1.5rem; }
h2 { font-size: 1.5rem; margin-top: 2.0rem; border-bottom: 1px solid var(--wwigr-rule); padding-bottom: 0.3rem; }
h3 { font-size: 1.2rem; margin-top: 1.5rem; }

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

.navbar {
  border-bottom: 1px solid var(--wwigr-rule);
}
.navbar-brand {
  font-family: "Source Sans Pro", Helvetica, Arial, sans-serif;
  font-weight: 700;
  color: var(--wwigr-accent) !important;
}

table {
  border-collapse: collapse;
  margin: 1rem 0;
}
table th {
  background: #f5f5f5;
  border-bottom: 2px solid var(--wwigr-accent);
  padding: 0.4rem 0.8rem;
  text-align: left;
  font-family: "Source Sans Pro", Helvetica, Arial, sans-serif;
  font-size: 0.95rem;
}
table td {
  padding: 0.3rem 0.8rem;
  border-bottom: 1px solid #eeeeee;
}
table tr:hover td {
  background: #f9f9f9;
}

.tier-top      { color: var(--tier-top);      font-weight: 600; }
.tier-mid      { color: var(--tier-mid);      font-weight: 500; }
.tier-lower    { color: var(--tier-lower); }
.tier-isolated { color: var(--tier-isolated); }

.muted { color: var(--wwigr-muted); }

img.figure { display: block; max-width: 100%; margin: 1rem auto; }

blockquote {
  border-left: 3px solid var(--wwigr-accent);
  margin-left: 0;
  padding-left: 1rem;
  color: var(--wwigr-muted);
  font-style: italic;
}

.content-block {
  background: #fafafa;
  border-left: 3px solid var(--wwigr-accent);
  padding: 1rem 1.2rem;
  margin: 1.5rem 0;
}

footer.page-footer {
  border-top: 1px solid var(--wwigr-rule);
  color: var(--wwigr-muted);
  font-size: 0.85rem;
  padding: 1rem 0;
}


/* Static site header/nav additions */
.site-header {
  border-bottom: 1px solid var(--wwigr-rule);
  padding: 1rem 0 0.5rem 0;
  margin-bottom: 1.5rem;
}
.site-header .brand a {
  font-family: "Source Sans Pro", Helvetica, Arial, sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--wwigr-accent);
  text-decoration: none;
}
.site-header nav {
  margin-top: 0.6rem;
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  font-family: "Source Sans Pro", Helvetica, Arial, sans-serif;
  font-size: 0.95rem;
}
.site-header nav a {
  color: var(--wwigr-text);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 2px solid transparent;
}
.site-header nav a:hover {
  color: var(--wwigr-link);
  border-bottom-color: var(--wwigr-link);
}
.site-header nav a.nav-active {
  color: var(--wwigr-accent);
  border-bottom-color: var(--wwigr-accent);
  font-weight: 600;
}
main {
  padding: 0 1rem 2rem 1rem;
}
.subtitle {
  color: var(--wwigr-muted);
  font-size: 1.1rem;
  margin-top: -1rem;
  margin-bottom: 1.5rem;
}
footer {
  border-top: 1px solid var(--wwigr-rule);
  margin-top: 3rem;
  padding: 1rem;
  color: var(--wwigr-muted);
  font-size: 0.85rem;
}
.figure-page {
  margin: 1.5rem -1rem;
}
.figure-page img {
  width: 100%;
  height: auto;
}
.dataTables_wrapper {
  margin-top: 1rem;
}