ATHENS, Greece -- Greeks awoke Monday to the stark reality of the country's accelerating crisis -- shuttered banks and ATMs with little cash -- hours after they voted resoundingly to reject more austerity measures in exchange for another bailout.
The referendum's results - 61 percent voted "no," compared with 39 percent for "yes" - left the bankrupt country's future in the European Union and with its euro currency uncertain.
European stock markets trimmed earlier losses Monday after a key Greek minister resigned. Earlier, Asian markets had dropped, for the most part. Economists said the markets were not expecting such a decisive "no" vote.
The margin of victory for "no" was far wider than expected, and Greece entered a second week of severe restrictions on financial transactions and faced the prospect of even limited amounts of cash drying out, with no prospect of an immediate infusion. Greece imposed the restrictions to stem a bank run after the vote was called and its bailout program expired.
Still, jubilant government supporters celebrated into the night in Syntagma Square in front of Parliament, waving Greek flags and chanting "No, no, no!"
One of them was Roula Antonopoulou, a pensioner who told CBS News correspondent Holly Williams, "At last, we can stand up and say here, we are, we have a strong voice, and you are going to listen to what we have to say, too."
In exchange for an extended $8 billion bailout, Greece's foreign creditors wanted steep tax hikes and cuts to pensions and public spending. But some Greeks worry that, by rejecting those terms, their country could now face economic catastrophe -- and be forced to leave the single european currency, Williams explains.
Marina Birdimiri told Williams she voted "yes" in the referendum. "My worst fears are that my daughter, who is 2-1/2, she's going to have to grow up the way my parents, my father grew up," Birdimiri said.
Greek Finance Minister Yanis Varoufakis resigned Monday, saying he was told shortly after the Greek referendum result was in that the some eurozone finance ministers and Greece's other creditors would prefer he not attend the ministers' meetings.
Varoufakis issued an announcement saying Prime Minister Alexis Tsipras had judged that Varoufakis' resignation "might help achieve a deal" and that he was leaving the finance ministry for that reason.
Varoufakis is known for his brash style and fondness for frequent media appearances at the start of his tenure when the new government was formed in January. He had visibly annoyed many of the eurozone's finance ministers during Greece's debt negotiations.
He said in a statement released by the Finance Ministry that it is crucial there is a "proper resolution" involving debt restructuring immediately.
He said the prime minister had judged it "potentially helpful to him" if he is absent from the upcoming meetings with Greece's creditors.
"I shall wear the creditors' loathing with pride," he said, adding that he fully supports the prime minister and the government.
Besieged by a prolonged recession, high unemployment and banks dangerously low on capital, Greece defaulted on an International Monetary Fund loan repayment last week, becoming the first developed nation to do so.
Now some analysts wonder if Greece is so starved for cash it could be forced to start issuing its own currency and become the first country to leave the 19-member eurozone, established in 1999.
The European Central Bank's governing council was not expected to provide more liquidity assistance to Greek banks Monday. The assistance, now at about 90 billion euros ($99.45 billion), has been maintained but not increased in past days, leaving the country's financial system in a stranglehold. Without an increase, Greeks probably will not be able to withdraw even the meager 60 euros ($67) allocated per day.
That will make it difficult for Tsipras to keep his pledge, expressed on TV and on his Twitter account, that Greece's "immediate priority is to restore our banking system's functioning and economic stability" or for banks to re-open Tuesday, as scheduled.
After Tsipras called for the referendum, negotiations on a financial rescue package broke off with Greece's creditors -- other European countries that use the euro, the IMF and the European Central Bank. It's unclear when they could restart, but the Tsipras government has said it believed a deal with creditors could be reached within 48 hours of the vote.
Key European leaders were regrouping. The eurogroup - experts from the finance ministries of the 19 states that have adopted the euro - was set to meet. And EU Commission president Jean-Claude Juncker, eurogroup President Jeroen Dijsselbloem and ECB President Mario Draghi planned to hold a teleconference to discuss the Greek case. A summit of eurozone leaders was set to convene Tuesday afternoon.
In Greece, leaders of six of the seven parties represented in Parliament were meeting Monday morning in the presidential palace. Tsipras requested the meeting to share his negotiating strategy and call for support.
The main opposition party, New Democracy, was sending an interim chief after its leader - former Prime Minister Antonis Samaras - resigned Sunday as "no" votes poured in.
Tsipras was vindicated after gambling the future of his 5-month-old coalition government -- and his country -- in an all-or-nothing game of brinkmanship with Greece's creditors.
"Today we celebrate the victory of democracy," Tsipras said in a televised address, describing Sunday as "a bright day in the history of Europe."
"We proved even in the most difficult circumstances that democracy won't be blackmailed," he said.
Tsipras had vowed that a "no" vote would strengthen his hand to negotiate a better deal for his country.
But European officials and most of Greece's opposition parties painted the referendum as one of whether the country kept using the euro currency - even though that was not the convoluted question asked on the ballot. Opinion polls Friday showed that 74 percent or more want their country to continue to use the euro.
Tsipras told Greeks in his address that he would negotiate a viable solution with the country's creditors.
How European officials react to the referendum result will be critical for the country.
German Chancellor Angela Merkel and French President Francois Hollande spoke to each other Sunday night and agreed "that the vote of the Greek people must be respected," Merkel's office said.
Dijsselbloem, the eurogroup head, said Sunday's referendum result was "very regrettable for the future of Greece."
The Dutch finance minister had been a steadfast opponent of Greece as it sought better conditions during five months of bailout negotiations. "For recovery of the Greek economy, difficult measures and reforms are inevitable," he said. "We will now wait for the initiatives of the Greek authorities."
Sigmar Gabriel, Germany's vice chancellor and economic minister, told a German newspaper the Greek government was leading its people "onto a path of bitter austerity and hopelessness."
Tsipras has "torn down the last bridges, across which Europe and Greece could move toward a compromise," Gabriel told the daily Tagesspiegel. "By saying 'no' to the eurozone's rules, as is reflected in the majority 'no' vote, it's difficult to imagine negotiations over an aid package for billions."
Belgian Finance Minister Johan Van Overtveldt was somewhat softer in his approach, saying a "no" result "complicates matters," but that the door remained open to resume talks immediately.
"What we certainly don't want to do is to take decisions that will threaten the monetary union," he told Belgium's VRT. "Within that framework we can start talks again with the Greek government, literally, within hours."
The international bailout - under which it received nearly 240 billion euros ($265 billion) in rescue loans - expired last week.
The margin of victory was likely to strengthen the young prime minister's defiance toward Europe. Tsipras was voted into office in January on a promise to repeal bailout austerity.
"This victory for the 'no' camp will unfortunately embolden the government, but is likely to do little to convince the creditors that Tsipras is a trustworthy negotiating partner who has any ability to implement a deal," said Megan Greene, chief economist of Manulife Asset Management.
"Any deal for Greece will involve a much larger fiscal adjustment than the one on which Greeks voted today. I don't think that Germany in particular will be willing to make any concessions for Tsipras."
Opposition conservative New Democracy lawmaker Vangelis Meimarakis said he was expecting Tsipras to keep his pledge for a quick deal.
"If we don't have an agreement within 48 hours as the prime minister promised, then we are being led to a tragedy," he said.