body {
  margin: 0;
  padding: 0;
  font-family: sans-serif;
  background-color: #f0f0f0;
}

header {
  position: absolute;
  top: 20px;
  left: 30px;
}

h1 {
  font-size: 1.8rem;
  margin: 0;
}

main {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 80px;
}

#vis-container {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: center;
  gap: 40px;
}

#info {
  width: 240px;
  font-size: 1rem;
}

#residueSet {
  margin-bottom: 20px;
  line-height: 1.4;
}

#residueSet b {
  display: block;
  margin-bottom: 4px;
}

.controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

button {
  padding: 6px 12px;
  font-size: 0.8rem;
  cursor: pointer;
}

input[type="number"] {
  width: 60px;
  padding: 5px;
  font-size: 1rem;
  margin-left: 6px;
  margin-right: 6px;
}

.modulus-line {
  display: flex;
  align-items: center;
  gap: 10px;
}

.modulus-line input[type="number"] {
  flex-grow: 1;
  margin-right: 0;
}

.full-width {
  width: 100%;
}

@media (max-width: 768px) {
  #vis-container {
    flex-direction: column;
    align-items: center;
    gap: 30px;
  }

  svg {
    width: 90vw;
    height: 90vw;
    max-width: 400px;
    max-height: 400px;
  }

  #info {
    width: 90%;
    max-width: 400px;
  }

  button, input[type="number"] {
    font-size: 1rem;
  }
}