header {
  background: linear-gradient(90deg, #00bcd4, #0097a7);
  display: flex;
  align-items: center;
  padding: 15px 20px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
}

.logo img {
  width: 60px;
  margin-right: 20px;
}

nav {
  display: flex;
  gap: 10px;
}

nav a {
  color: white;
  text-decoration: none;
  padding: 10px 18px;
  border-radius: 5px;
  font-weight: bold;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: 0.3s;
}

nav a:hover {
  background-color: white;
  color: black;
}
.btn-pdf{
  display:inline-block;
  background:#2fbdd3;
  color:white;
  padding:12px 20px;
  border-radius:6px;
  text-decoration:none;
  font-weight:bold;
  transition:0.3s;
}

.btn-pdf i{
  margin-right:8px;
}

.btn-pdf:hover{
  background:#2fbdd3;
  transform: scale(1.05);
}