/* Global styles */
body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', sans-serif;
  background-color: #121212;
  color: #E0E0E0;
  line-height: 1.6;
}

header {
  background-color: #1ED29E;
  padding: 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

header h1 {
  margin: 0;
  font-size: 1.5rem;
}

header img.logo {
  height: 40px;
  vertical-align: middle;
}

nav {
  display: flex;
  gap: 1rem;
}

nav a {
  color: #121212;
  text-decoration: none;
  padding: 0.5rem 1rem;
  transition: all 0.3s ease;
  border-radius: 4px;
  font-weight: bold;
}

nav a:hover {
  background-color: #23A87F;
  color: #ffffff;
}

main {
  padding: 2rem;
}

footer {
  background-color: #2A2A2A;
  color: #aaa;
  text-align: center;
  padding: 1rem;
  font-size: 0.9rem;
  margin-top: 2rem;
}

.grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: space-around;
}

.plot-box {
  flex: 1 1 45%;
  min-width: 400px;
  max-width: 600px;
  aspect-ratio: 4 / 3;
  background: #1e1e1e;
  border-radius: 10px;
  padding: 0.5rem;
}