/* Reset & base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Roboto', sans-serif;
}

body {
  line-height: 1.6;
  color: #333;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
}

/* Header */
header {
  background: #007BFF;
  color: #fff;
  padding: 20px 0;
}

header h1 {
  display: inline-block;
}

nav ul {
  list-style: none;
  display: inline-block;
  float: right;
}

nav ul li {
  display: inline;
  margin-left: 20px;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
  font-weight: bold;
}

nav ul li a:hover {
  text-decoration: underline;
}

/* Footer */
footer {
  background: #333;
  color: #fff;
  text-align: center;
  padding: 20px 0;
  margin-top: 40px;
}

/* Sections */
section {
  padding: 60px 0;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 10px 20px;
  background: #007BFF;
  color: #fff;
  text-decoration: none;
  border-radius: 5px;
}

.btn:hover {
  background: #0056b3;
}

/* Responsive */
@media(max-width:768px){
  nav ul {
    float: none;
    text-align: center;
  }
  nav ul li {
    display: block;
    margin: 10px 0;
  }
}