/* General Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  color: white;
  background: url('background.jpg') no-repeat center center fixed;
  background-size: cover;
}

/* Header */
header {
  text-align: center;
  padding: 20px;
}

header h1 {
  font-size: 2.2rem;
  color: #00bcd4;
}

header p {
  font-size: 1rem;
  color: #1b5e20;
}

/* Highlight Box Styling */
.highlight-box {
  background: rgba(40, 40, 40, 0.85);
  margin: 20px auto;
  padding: 20px;
  max-width: 900px;
  border-radius: 12px;
  border-left: 5px solid #00bcd4;
  backdrop-filter: blur(4px);
}

.highlight-box h2 {
  font-size: 1.4rem;
  margin-bottom: 8px;
}

/* Specific Heading Colors */
.highlight-box:nth-child(2) h2 {
  color: #03a9f4; /* Guest Speakers */
}
.highlight-box:nth-child(3) h2 {
  color: #ff4081; /* Key Talks */
}
.highlight-box:nth-child(4) h2 {
  color: #9c27b0; /* Expert Panel */
}
.highlight-box:nth-child(5) h2 {
  color: #2196f3; /* Media Coverage */
}
.highlight-box:nth-child(6) h2 {
  color: #4caf50; /* Impact & Feedback */
}

/* List styling */
.highlight-box ul {
  list-style: disc;
  padding-left: 20px;
}

/* Button */
.r_btn {
  display: block;
  margin: 30px auto;
  padding: 12px 25px;
  font-size: 1rem;
  background: #00bcd4;
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.3s ease;
}
.r_btn:hover {
  background: #008c9e;
}

/* Footer */
.footer {
  text-align: center;
  padding: 15px;
  background: rgba(0, 0, 0, 0.6);
  font-size: 0.9rem;
  margin-top: 40px;
}