Brazil woke on Wednesday with its worst footballing hangover in at least 64 years, perhaps ever. The previous night had been planned as a party to celebrate the World Cup hosts’ progress to the final. Instead, it was more like a wake as the hopes of a nation died the most ignominious death imaginable with a 7-1 rout by Germany. That would hurt for fans in any country, but the headache and heartache are magnified in Brazil, where football means more and success is almost taken for granted. Brazil has won the World Cup five times – more than any other nation. Until Wednesday, it had not lost a competitive match at home for 39 years and boasted the greatest World Cup goalscorer of all time in Ronaldo. But all that changed in the space of 18 first-half minutes in which Brazil leaked five goals and Germany’s Miroslav Klose became the new all-time top World Cup scorer. A national and international discussion is under way to try to comprehend what went so disastrously wrong. Posts about the match have broken all records on Facebook and Twitter. And the postmortem, which looks set to drag on for a very long time,…