:root {
  --primary-green: #0046A0;
  --primary-green-light: #3399FF;
  --primary-green-dark: #1b5e20;
  --dark-bg: #0046A0;
  --dark-bg-light: #2a2a3a;
  --light-bg: #f8fafc;
  --card-bg: #ffffff;
  --border-color: #e2e8f0;
  --text-dark: #1e293b;
  --text-light: #64748b;
  --text-white: #f8fafc;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
}

/* Newsletter Content */
.newsletter-content {
  padding: 40px 0;
  position: relative;
}

.newsletter-header {
  text-align: center;
  margin-bottom: 40px;
  padding-top: 80px; /* Space for sticky heading */
}

/* Sticky heading styles */
.sticky-heading {
  position: sticky;
  top: 30px; /* Adjust this based on your header height */
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgba(0, 70, 160, 0.95); /* Using primary-green with transparency */
  color: var(--text-white);
  font-size: 1.5rem;
  font-weight: bold;
  z-index: 90;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  margin-bottom: 30px;
}

/* Newsletter Header Text */
.newsletter-header h1 {
  font-size: 2.5rem;
  margin-bottom: 15px;
  color: var(--primary-green);
}

.newsletter-header p {
  font-size: 1.1rem;
  color: var(--text-light);
  max-width: 700px;
  margin: 0 auto;
}

/* Newsletter Grid */
.newsletter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

/* Newsletter Card */
.newsletter-card {
  background: var(--card-bg);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease;
}

.newsletter-card:hover {
  transform: translateY(-5px);
}

/* Card Image Placeholder */
.card-image {
  height: 200px;
  background-color: var(--border-color);
  background-size: cover;
  background-position: center;
}

/* Card Content */
.card-content {
  padding: 20px;
}

.card-content h3 {
  margin-bottom: 10px;
  color: var(--primary-green);
}

.card-content p {
  color: var(--text-light);
  margin-bottom: 15px;
}

/* Read More Link */
.read-more {
  display: inline-block;
  color: var(--primary-green);
  font-weight: 600;
  text-decoration: none;
}