/* Banner */
.banner {
  background: #f8fafc;
  padding: 2rem 1rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  margin-bottom: 2rem;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.banner-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.banner-logo {
  max-width: 100%;
  height: auto;
  max-height: 120px;
  margin-bottom: 1rem;
}

.banner h1 {
  margin: 1rem 0 0;
  font-size: 2.2rem;
  font-weight: 700;
  font-family: 'Montserrat', sans-serif;
  color: #1e3c72;
  letter-spacing: -0.5px;
}

/* Main container */
.activities-container {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  color: #333;
  line-height: 1.7;
  position: relative;
  z-index: 1; /* Below header */
  margin-top: 70px; /* Height of header */
}

/* Typography */
h2 {
  color: #0f2d5a;
  font-size: 2.1rem;
  margin: 3rem 0 1.5rem;
  font-weight: 800;
  font-family: 'Montserrat', sans-serif;
  position: relative;
  padding-bottom: 0.8rem;
  letter-spacing: -0.5px;
}

h2:after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, #2a5298, #3b7dd8);
  border-radius: 3px;
}

h3 {
  color: #1e3c72;
  font-size: 1.6rem;
  margin: 2.8rem 0 1.2rem;
  font-weight: 700;
  letter-spacing: -0.3px;
  font-family: 'Montserrat', sans-serif;
  background: linear-gradient(90deg, #1e3c72, #2a5298);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

h4 {
  color: #2a4b8d;
  font-size: 1.25rem;
  margin: 2.2rem 0 1.2rem;
  font-weight: 700;
  position: relative;
  padding-left: 1rem;
  border-left: 4px solid #3b7dd8;
  line-height: 1.4;
}

p {
  margin-bottom: 1.5rem;
  color: #2d3748;
  font-size: 1.08rem;
  line-height: 1.8;
  font-weight: 400;
}

/* Lists */
ul {
  padding-left: 1.5rem;
  margin: 1.5rem 0;
}

li {
  margin-bottom: 0.8rem;
  color: #444;
  position: relative;
  padding-left: 1.2rem;
  line-height: 1.6;
}

li:before {
  content: '•';
  color: #2a5298;
  font-weight: bold;
  display: inline-block;
  width: 1em;
  margin-left: -1em;
  position: absolute;
  left: 0;
}

/* Team grid */
.participants-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
  padding: 0;
  list-style: none;
}

.participants-grid li {
  padding: 0.5rem 0;
  margin: 0;
  padding-left: 0;
  border-bottom: 1px solid #eee;
}

.participants-grid li:before {
  display: none;
}

/* Links */
.related-links {
  margin: 3rem 0;
  padding: 1.5rem;
  background: #f8fafc;
  border-radius: 8px;
}

.related-links h4 {
  margin-top: 0;
  color: #1e3c72;
}

.related-links ul {
  margin: 1rem 0 0;
}

.related-links a {
  color: #2a5298;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

.related-links a:hover {
  color: #1e3c72;
  text-decoration: underline;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .banner {
    padding: 3rem 1rem 2rem;
  }
  
  .banner h1 {
    font-size: 2.2rem;
  }
  
  .activities-container {
    padding: 0 1.25rem 3rem;
  }
  
  h2 {
    font-size: 1.7rem;
    margin-top: 2.5rem;
  }
  
  h3 {
    font-size: 1.3rem;
  }
  
  .participants-grid {
    grid-template-columns: 1fr;
  }
}