:root {
  --color-primary: #1f4e8c;
  --color-primary-dark: #16375f;
  --color-accent: #d1495b;
  --color-bg: #f7f9fb;
  --color-text: #222;
  --color-muted: #5a6472;
  --max-width: 1080px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

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

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
}

/* Header / Navigation */
header.site-header {
  background: var(--color-primary);
  color: #fff;
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: #fff;
}

.site-title:hover {
  text-decoration: none;
  opacity: 0.9;
}

nav.main-nav ul {
  list-style: none;
  display: flex;
  gap: 1.25rem;
  margin: 0;
  padding: 0;
  flex-wrap: wrap;
}

nav.main-nav a {
  color: #eaf1fb;
  font-weight: 600;
  font-size: 0.95rem;
}

nav.main-nav a:hover,
nav.main-nav a.active {
  color: #fff;
  text-decoration: underline;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: #fff;
  font-size: 1.5rem;
  cursor: pointer;
}

.has-dropdown {
  position: relative;
}

.has-dropdown > .dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-primary-dark);
  list-style: none;
  margin: 0;
  padding: 0.5rem 0;
  min-width: 220px;
  border-radius: 6px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  z-index: 20;
}

.has-dropdown:hover > .dropdown,
.has-dropdown:focus-within > .dropdown {
  display: block;
}

.dropdown a {
  display: block;
  padding: 0.5rem 1rem;
  white-space: nowrap;
  font-weight: 500;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  text-align: center;
  padding: 3.5rem 1.5rem;
}

.hero h1 {
  margin: 0 0 0.5rem;
  font-size: 2.2rem;
}

.hero p {
  margin: 0 auto;
  max-width: 640px;
  color: #dce7f7;
}

/* Main content */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
}

section {
  margin-bottom: 2.5rem;
}

h2 {
  border-bottom: 3px solid var(--color-accent);
  padding-bottom: 0.4rem;
  color: var(--color-primary-dark);
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.25rem;
}

.card {
  background: #fff;
  border: 1px solid #e1e6eb;
  border-radius: 8px;
  padding: 1.25rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}

.card h3 {
  margin-top: 0;
  color: var(--color-primary-dark);
}

#organizing-committee .card-grid {
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

#organizing-committee .card {
  padding: 1rem;
}

#organizing-committee .card h3 {
  font-size: 1.05rem;
}

#organizing-committee .card p {
  font-size: 0.9rem;
  margin: 0.3rem 0;
}

@media (max-width: 720px) {
  #organizing-committee .card-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.icon-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.4rem;
}

.website-icon {
  height: 20px;
  width: auto;
  vertical-align: middle;
  opacity: 0.85;
}

.website-link:hover .website-icon {
  opacity: 1;
}

/* Simple committee lists */
.committee-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.committee-list li {
  padding: 0.4rem 0;
  border-bottom: 1px solid #e1e6eb;
}

.committee-list li:last-child {
  border-bottom: none;
}

.committee-list .affiliation {
  color: var(--color-muted);
  font-size: 0.9rem;
}

#organizing-committee .scholar-icon {
  height: 20px;
}

.scholar-link {
  display: inline-block;
  margin: 0.4rem 0;
}

.scholar-icon {
  height: 28px;
  width: auto;
  vertical-align: middle;
  opacity: 0.85;
}

.scholar-link:hover .scholar-icon {
  opacity: 1;
}

.badge {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
  margin-bottom: 0.5rem;
}

.badge.badge-open {
  background: #2a9d8f;
}

/* Table */
table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}

table caption {
  text-align: left;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

th, td {
  text-align: left;
  padding: 0.6rem 0.8rem;
  border-bottom: 1px solid #e1e6eb;
}

th {
  background: #eef2f7;
}

/* Footer */
footer.site-footer {
  background: var(--color-primary-dark);
  color: #cfd9e6;
  text-align: center;
  padding: 1.5rem;
  font-size: 0.9rem;
}

footer.site-footer a {
  color: #fff;
}

/* Responsive nav */
@media (max-width: 720px) {
  .nav-toggle {
    display: block;
  }

  nav.main-nav {
    display: none;
    width: 100%;
  }

  nav.main-nav.open {
    display: block;
  }

  nav.main-nav ul {
    flex-direction: column;
    gap: 0.5rem;
    padding: 1rem 0;
  }

  .header-inner {
    flex-wrap: wrap;
  }
}

.news-table th:first-child,
.news-table td:first-child {
  white-space: nowrap;
  width: 9rem;
}