.sorteador-container {
  max-width: 400px;
  margin: 50px auto;
  padding: 30px 25px;
  background: #ffffff;
  border-radius: 12px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: #333;
  transition: box-shadow 0.3s ease;
}

.sorteador-container:hover {
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.15);
}

.sorteador-container h2 {
  margin-bottom: 24px;
  text-align: center;
  font-weight: 700;
  font-size: 1.8rem;
  color: #4a47a3;
  letter-spacing: 1.2px;
}

.sorteador-container form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.sorteador-container label {
  font-size: 1rem;
  font-weight: 600;
  color: #555;
  display: flex;
  flex-direction: column;
}

.sorteador-container input[type="number"] {
  margin-top: 6px;
  padding: 10px 12px;
  font-size: 1rem;
  border: 2px solid #ddd;
  border-radius: 8px;
  transition: border-color 0.25s ease;
}

.sorteador-container input[type="number"]:focus {
  border-color: #4a47a3;
  outline: none;
  box-shadow: 0 0 8px rgba(74, 71, 163, 0.3);
}

.sorteador-container input[type="checkbox"] {
  margin-right: 10px;
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: #4a47a3;
  align-self: start;
}

.sorteador-container button {
  background: #4a47a3;
  color: white;
  border: none;
  border-radius: 10px;
  padding: 14px;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(74, 71, 163, 0.4);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.sorteador-container button:hover {
  background: #3a3785;
  box-shadow: 0 10px 22px rgba(58, 55, 133, 0.6);
}

#resultado {
  margin-top: 28px;
  font-size: 1.15rem;
  text-align: center;
  padding: 18px 12px;
  background: #f5f5f5;
  border-radius: 10px;
  box-shadow: inset 0 0 12px rgba(74, 71, 163, 0.1);
  min-height: 48px;
  color: #4a47a3;
  font-weight: 600;
  word-break: break-word;
}