/* ================= Header & Navigation ================= */
.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  background: #111;
  color: white;
  padding: 20px;
}

nav ul {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

nav li {
  margin-left: 15px;
}

nav a {
  color: white;
  text-decoration: none;
  font-weight: bold;
}

nav a:hover {
  color: #4CAF50;
}

/* Hamburger icon hidden on desktop */
.hamburger {
  display: none;
  font-size: 28px;
  cursor: pointer;
  user-select: none;
}

/* ================= Mobile styles ================= */
@media (max-width: 768px) {
  .hamburger {
    display: block;
  }

  nav ul {
    display: none; /* hide menu by default */
    flex-direction: column;
    width: 100%;
    background: #111;
    margin-top: 10px;
  }

  nav ul.active {
    display: flex; /* show menu when hamburger clicked */
  }

  nav li {
    margin: 15px 0;
    text-align: center;
  }
}

/* ================= Page Layout ================= */
body {
  font-family: Arial, Helvetica, sans-serif;
  margin: 0;
  background: #f4f4f4;
}

/* Hero Section */
.hero {
  background: #4CAF50;
  color: white;
  padding: 60px 20px;
  text-align: center;
}

/* Container and Articles */
.container {
  width: 90%;
  max-width: 1100px;
  margin: auto;
  padding: 20px;
}

.article {
  background: white;
  padding: 30px;
  border-radius: 5px;
  margin-bottom: 20px;
}

/* Footer */
footer {
  background: #111;
  color: white;
  text-align: center;
  padding: 20px;
  margin-top: 40px;
}