body {
  font-family: Arial, sans-serif;
  margin: 20px;
}

#tauler {
  display: flex;
  gap: 20px;
  margin-top: 20px;
}

.columna {
  flex: 1;
  border: 1px solid #ccc;
  padding: 10px;
  min-height: 200px;
}

.tasca {
  border: 1px solid #999;
  padding: 8px;
  margin-bottom: 8px;
  background-color: #f9f9f9;
}

.tasca.alta {
  border-left: 5px solid red;
}

.tasca.mitjana {
  border-left: 5px solid orange;
}

.tasca.baixa {
  border-left: 5px solid green;
}

#estadistiques {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

#estadistiques p {
  background-color: #f0f0f0;
  padding: 8px;
  border-radius: 5px;
}

@media (max-width: 768px) {
  #tauler {
    flex-direction: column;
  }

  .columna {
    margin-bottom: 15px;
  }
}

button:hover {
  opacity: 0.8;
}

.tasca:hover {
  transform: scale(1.02);
  transition: 0.2s;
}