:root {
  scroll-padding-top: 80px;
}
html {
  scroll-behavior: smooth;
}

    body {
       font-family: 'poppins', sans-serif;
      scroll-behavior: smooth;
    }
    .nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  width: 100%;
  background-color: #ffc107;
}

    section {
      padding: 80px 0;
    }
    nav.navbar {
      background: #fff;
      box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }
    .logo img {width: 70px;}

    .hero {
  position: relative;
  height: 100vh;
  overflow: hidden;
  color: white;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  text-align: center;
}

.hero video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}

.hero .content {
  position: relative;
  z-index: 1;
  margin-bottom: 0px;
}
.bg-dark-section {
  background: #000;
  color: #fff;
}
.nav-link {
  position: relative;
  color: #000;
  padding-bottom: 8px;
  transition: all 0.3s ease;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 3px;
  background-color: #ffc107; 
}
.border-bottom-yellow{ border-bottom: 2px solid #ffc107;display: inline-block;}

  #publications {
    background-image: url('assets/Our-Publications-bg.jpg'); 
    background-size: cover;
    background-position: center;
    padding: 60px 0;
    color: white;
    z-index: 1;
    position: relative;
  }
    #publications::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0, 0, 0, 0.6); 
    z-index: 0;
  }
  #publications > .container {
  position: relative;
  z-index: 1;
}
  .border-bottom-yellow {
    border-bottom: 3px solid yellow;
    display: inline-block;
    padding-bottom: 5px;
  }
  .pub-box {
    background-color: rgba(0, 0, 0, 0.7);
    border: 1px solid #fff;
    border-radius: 12px;
    padding: 30px 20px;
    margin-bottom: 20px;
    height: 100%;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
  }
  .pub-box img {
    max-width: 100px;
    margin-bottom: 15px;
  }
 .pub-box p {
  text-align: center;
  margin-top: auto; 
}

  #events {
    position: relative;
    background-image: url('assets/Our-Events-bg.jpg'); 
    background-size: cover;
    background-position: center;
    padding: 60px 0;
    color: white;
    z-index: 1; 
  }
   #events::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0, 0, 0, 0.6); 
    z-index: 0;
  }
  #events > .container {
  position: relative;
  z-index: 1;
}

  .border-bottom-white {
    border-bottom: 3px solid #fff;
    display: inline-block;
    padding-bottom: 5px;
  }

  .event-box {
    background-color: rgba(0, 0, 0, 0.6);
    border: 1px solid #fff;
    border-radius: 12px;
    padding: 25px 20px;
    height: 100%;
    text-align: center;

    display: flex;
    flex-direction: column;
    align-items: center;
  }

  .event-box img {
    max-width: 100px;
    margin-bottom: 15px;
  }

  .event-box p {
    text-align: center;
  margin-top: auto; 
  }

  .team-section {
  background: url('assets/Our-Team.jpg') no-repeat center center/cover;
  height: 100vh;
  position: relative;
}
.overlay-title {
  position: absolute;
  top: 20px; 
  left: 0;
  width: 100%;
  background: rgba(0, 0, 0, 0.9); 
  text-align: center;
  padding: 10px 0;
}

.overlay-title h2 {
  color: #fff;
  text-transform: uppercase;
  margin: 0;
}