/* Reset and Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #121212;
  color: #eee;
  line-height: 1.6;
}
a {
  color: #00b4d8;
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

/* Header */
header {
  background: #1f1f1f;
  padding: 1rem 2rem;
}
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
nav h1 {
  font-size: 1.5rem;
  color: #ffbe0b;
}
nav ul {
  display: flex;
  list-style: none;
  gap: 1rem;
}
nav li a {
  font-weight: bold;
}

/* Main Layout */
.container {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  padding: 2rem;
}
main {
  flex: 3 1 60%;
}
aside {
  flex: 1 1 30%;
  background: #1f1f1f;
  padding: 1rem;
  border-radius: 0.5rem;
}
aside h3 {
  margin-bottom: 1rem;
}
aside ul {
  list-style: none;
}
aside ul li {
  margin-bottom: 0.5rem;
}

/* Content Sections */
main section {
  margin-bottom: 2rem;
}
main h2, main h3 {
  color: #ffbe0b;
}

/* Footer */
footer {
  text-align: center;
  padding: 1rem;
  background: #1f1f1f;
  margin-top: 2rem;
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    flex-direction: column;
  }
}