body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #f2f1ef;
}

#app {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px;
}

h1 {
  font-size: 1.8rem;
  margin-bottom: 0.5rem;
}

#fit-form {
  margin-bottom: 1.5rem;
}

button {
  padding: 0.6rem 1.2rem;
  border-radius: 999px;
  border: none;
  background: #6d6a5b;
  color: #fff;
  font-weight: 600;
  cursor: pointer;
}

#results {
  background: #fff;
  border-radius: 12px;
  padding: 1rem 1.25rem;
  border: 1px solid #ddd;
}

.field {
  margin-bottom: 1rem;
}

.field label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.field select,
.field input {
  width: 100%;
  padding: 0.5rem 0.6rem;
  border-radius: 8px;
  border: 1px solid #ccc;
  font-size: 0.95rem;
  box-sizing: border-box;
}

.two-col {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.two-col .field {
  flex: 1 1 160px;
}

.inline-inputs {
  display: flex;
  gap: 0.5rem;
}

.inline-inputs input {
  flex: 1 1 0;
}