/* Base styles */
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
               Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
  background-color: #fff;
  color: #111;
}

main {
  max-width: 1200px;
  margin: auto;
  padding: 20px;
}

/* Header styles */
header {
  background-color: #000;
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  position: relative;
  z-index: 10;
}

.logo a {
  color: #fff;
  text-decoration: none;
  font-size: 22px;
  font-weight: 600;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 20px;
  margin: 0;
  padding: 0;
}

nav ul li a {
  color: #fff;
  text-decoration: none;
  font-size: 16px;
  transition: color 0.3s;
}

nav ul li a:hover {
  color: #ccc;
}

/* Hamburger menu */
.hamburger {
  display: none;
  font-size: 26px;
  cursor: pointer;
}

@media (max-width: 768px) {
  .hamburger {
    display: block;
  }

  nav ul {
    flex-direction: column;
    position: absolute;
    top: 64px;
    right: 20px;
    background-color: #000;
    width: 200px;
    border-radius: 8px;
    padding: 12px 0;
    box-shadow: 0 4px 8px rgba(0,0,0,0.3);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transform: translateY(-10px);
    transition: max-height 0.4s ease, opacity 0.4s ease, transform 0.4s ease;
  }

  nav ul.active {
    max-height: 500px;
    opacity: 1;
    transform: translateY(0);
  }
}

/* Centering key content */
.why-anonymity {
  text-align: center;
  padding: 40px 20px;
}

.why-anonymity h1 {
  font-size: 2em;
  margin-bottom: 12px;
}

.why-anonymity p {
  max-width: 700px;
  margin: 0 auto;
  font-size: 1.1em;
  line-height: 1.6;
}

/* Categories grid */
.categories {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  justify-content: center;
  padding: 40px 0;
}

.category-box {
  background-color: #f9f9f9;
  border: 1px solid #ddd;
  border-radius: 16px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.05);
  padding: 20px;
  width: 300px;
  transition: transform 0.3s, box-shadow 0.3s;
}

.category-box:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

.category-box h2 {
  margin-top: 0;
  font-size: 1.25em;
}

.category-box ul {
  list-style: none;
  padding-left: 0;
}

.category-box ul li {
  margin: 8px 0;
}

.category-box ul li a {
  color: #0070f3;
  text-decoration: none;
  font-weight: 500;
}

.category-box ul li a:hover {
  text-decoration: underline;
}

/* Footer */
footer {
  background-color: #f0f0f0;
  padding: 24px;
  text-align: center;
  color: #333;
  font-size: 0.95em;
  margin-top: 40px;
}

footer a {
  color: #0070f3;
  text-decoration: none;
  margin-left: 12px;
}

footer a:hover {
  text-decoration: underline;
}