* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Arial, sans-serif;
}

:root {
  --navy: #0b1e36;
  --accent: #2b7cff;
  --text: #374151;
  --light: #f4f6fb;
}

body {
  background: #ffffff;
  color: var(--text);
  line-height: 1.7;
}


.navbar {
  background: linear-gradient(90deg, #081629, #0b1e36);
  padding: 18px 6%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  color: #ffffff;
  font-size: 22px;
  font-weight: 600;
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 28px;
}

.nav-links a {
  color: #e5e7eb;
  text-decoration: none;
  font-weight: 500;
}

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


.research-item {
  position: relative;
}

.research-popup {
  position: absolute;
  top: 40px;
  left: 0;
  background: #ffffff;
  width: 260px;
  border-radius: 8px;
  display: none;
  box-shadow: 0 20px 40px rgba(0,0,0,.25);
}

.research-popup a {
  display: block;
  padding: 14px 18px;
  color: var(--navy);
  text-decoration: none;
  border-bottom: 1px solid #e5e7eb;
}

.research-popup a:hover {
  background: var(--light);
  color: var(--accent);
}


.menu-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
}

.bar {
  width: 25px;
  height: 3px;
  background: white;
  margin: 4px 0;
}


.content {
  padding: 80px 6%;
}

.section {
  margin-bottom: 80px;
}

.section.alt {
  background: var(--light);
  padding: 60px;
  border-radius: 16px;
}

.center {
  text-align: center;
}

.section h2 {
  color: var(--navy);
  margin-bottom: 30px;
  font-size: 30px;
  font-weight: 700;
}

.intro {
  max-width: 800px;
  margin: auto;
  font-size: 18px;
}


.publication-list {
  max-width: 900px;
  margin: auto;
  text-align: left;
  padding-left: 25px;
  list-style: disc;
}

.publication-list li {
  margin-bottom: 20px;
  font-size: 16px;
}

.publication-list a {
  color: var(--accent);
  font-weight: 600;
  text-decoration: none;
}

.publication-list a:hover {
  text-decoration: underline;
}


footer {
  background: #0f172a;
  color: #ffffff;
  padding: 24px;
  text-align: center;
  font-size: 14px;
}


@media (max-width: 900px) {

  .menu-toggle {
    display: flex;
  }

  .nav-links {
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: #0b1e36;
    flex-direction: column;
    align-items: center;
    display: none;
    padding: 20px 0;
  }

  .nav-links li {
    margin: 12px 0;
  }

  .nav-links.active {
    display: flex;
  }

  .publication-list {
    padding-left: 18px;
  }
}



:root {
  --navy-dark: #0f172a;
  --navy: #1e3a8a;
  --accent: #60a5fa;
  --bg: #ffffff;
}

footer, .footer {
  background: #0f172a !important;
  color: white !important;
  text-align: center !important;
  padding: 20px !important;
  font-size: 16px !important;
}

.navbar {
  background: rgba(15, 23, 42, 0.95) !important;
}

.nav-links a:hover,
.nav-links a.active {
  color: #60a5fa !important;
}


@media (min-width: 901px) {
  .nav-container, .navbar-container {
    max-width: 1300px !important;
    margin: 0 auto !important;
    padding: 18px 30px !important;
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    box-sizing: border-box !important;
    min-height: 70px !important;
  }
}