* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", sans-serif;
}

body {
  background: #f9f9f9;
  color: #333;
}

header {
  background: #fff;
  padding: 15px 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.logo {
  font-size: 1.8em;
  font-weight: bold;
  color: #4a90e2;
}

nav a {
  margin-left: 20px;
  text-decoration: none;
  color: #333;
  font-weight: 500;
}

nav a.active, nav a:hover {
  color: #4a90e2;
}

.hero {
  text-align: center;
  padding: 100px 20px;
  background: linear-gradient(to right, #e0f7fa, #ffffff);
  animation: fadeIn 1s ease;
}

.hero h1 {
  font-size: 3em;
  margin-bottom: 10px;
}

.hero p {
  font-size: 1.2em;
  margin-bottom: 20px;
}

.btn {
  background: #4a90e2;
  color: white;
  padding: 12px 25px;
  border-radius: 8px;
  text-decoration: none;
  transition: background 0.3s ease;
}

.btn:hover {
  background: #357ab7;
}

footer {
  text-align: center;
  padding: 20px;
  font-size: 0.9em;
  background: #fff;
  box-shadow: 0 -2px 8px rgba(0,0,0,0.05);
  margin-top: 50px;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}