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

/* Global styles */
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(to right, #edf6f9, #d9f7f6);
  color: #333;
  line-height: 1.6;
  transition: background 0.5s ease;
}

header {
  background: linear-gradient(to right, #005f73, #0a9396);
  color: white;
  padding: 40px 20px;
  text-align: center;
  animation: fadeInDown 1s ease;
}

header h1 {
  font-size: 2.8em;
  margin-bottom: 10px;
}

header p {
  font-size: 1.2em;
}

main {
  max-width: 1000px;
  margin: auto;
  padding: 20px;
  animation: fadeInUp 1s ease;
}

section {
  background: white;
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 30px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s;
}

section:hover {
  transform: translateY(-5px);
}

h2 {
  margin-bottom: 15px;
  color: #005f73;
  font-size: 1.6em;
  border-left: 5px solid #94d2bd;
  padding-left: 10px;
}

ul, ol {
  margin-left: 20px;
}

.download-btn {
  display: inline-block;
  background: #0a9396;
  color: white;
  padding: 12px 24px;
  text-decoration: none;
  font-size: 1em;
  border-radius: 6px;
  transition: background 0.3s, transform 0.3s;
}

.download-btn:hover {
  background: #008080;
  transform: scale(1.05);
}

footer {
  background: #e9ecef;
  text-align: center;
  padding: 15px;
  font-size: 0.9em;
  color: #555;
}

/* Animations */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive Design */
@media (max-width: 768px) {
  header h1 {
    font-size: 2.2em;
  }

  .download-btn {
    width: 100%;
    text-align: center;
  }

  main {
    padding: 10px;
  }

  section {
    padding: 15px;
  }
}