#ruleta-multinivel-wrapper {
  text-align: center;
  font-family: 'Segoe UI', sans-serif;
  padding: 20px;
}

#names-challenges-row {
  display: flex;
  justify-content: center;
  margin-bottom: 10px;
}

.names-label,
.challenges-label {
  display: block;
  text-align: left;
  font-size: 15px;
  margin-bottom: 2px;
  margin-left: 2px;
  color: #333;
}

.names-challenges-col {
 flex: 1;
  max-width: 240px;
  margin: 0 10px;

}

#namesInput,
#challengesInput {
  width: 100%;
  max-width: 240px;
  height: 100px;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 16px;
  box-sizing: border-box;
  resize: vertical;
  display: block;

}

#mappingInput {
  display: block;
  width: 90vmin;
  max-width: 500px;
  height: 100px;
  margin: 10px auto;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-size: 16px;
  box-sizing: border-box;
}
#loadMapping,
#spinButton {
  display: block;
  width: 90vmin;
  max-width: 500px;
  margin: 10px auto;
  padding: 10px 20px;
  color: #fff;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
}
#loadMapping { background-color: #28a745; }
#loadMapping:hover { background-color: #218838; }
#spinButton { background-color: #1E88E5; }
#spinButton:disabled { background-color: #bbb; cursor: not-allowed; }
#spinButton:not(:disabled):hover { background-color: #1565C0; }
#wheel {
  border: 8px solid #555;
  border-radius: 50%;
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
  display: block;
  margin: 20px auto;
  width: 80vmin;
  height: 80vmin;
  max-width: 500px;
  max-height: 500px;
}

@media (max-width: 600px) {
  #names-challenges-row {
    flex-direction: column;
  }
  .names-challenges-col,
  #namesInput,
  #challengesInput,
  #mappingInput,
  #loadMapping,
  #spinButton {
    width: 70vw;
    max-width: none;
  }
  #wheel {
    max-width: 80vw;
    max-height: 80vw;
  }
}