// ==================== 冷却函数 ====================
function refreshCoolDownDisplay(which) {
    if (which === 'mexc') {
        if (mexcCountdown > 0) {
            if (timerMEXC) timerMEXC.textContent = `${mexcElapsed} ⏱️ MEXC冷却 ${mexcCountdown}s`;
        } else {
            if (timerMEXC) timerMEXC.textContent = '';
        }
    } else if (which === 'binance') {
        if (binanceCountdown > 0) {
            if (timerBinance) timerBinance.textContent = `${binanceElapsed} ⏱️ Binance冷却 ${binanceCountdown}s`;
        } else {
            if (timerBinance) timerBinance.textContent = '';
        }
    }
}

function startCoolDown(which, seconds) {
    if (which === 'mexc') {
        if (mexcInterval) clearInterval(mexcInterval);
        mexcCountdown = seconds;
        if (mexcBtn) mexcBtn.disabled = true;
        refreshCoolDownDisplay('mexc');
        mexcInterval = setInterval(() => {
            if (mexcCountdown > 0) {
                mexcCountdown--;
                if (mexcCountdown <= 0) {
                    clearInterval(mexcInterval);
                    mexcInterval = null;
                    if (mexcBtn) mexcBtn.disabled = false;
                    if (timerMEXC) timerMEXC.textContent = '';
                    mexcElapsed = '';
                } else {
                    refreshCoolDownDisplay('mexc');
                }
            } else {
                clearInterval(mexcInterval);
                mexcInterval = null;
                if (mexcBtn) mexcBtn.disabled = false;
                if (timerMEXC) timerMEXC.textContent = '';
                mexcElapsed = '';
            }
        }, 1000);
    } else if (which === 'binance') {
        if (binanceInterval) clearInterval(binanceInterval);
        binanceCountdown = seconds;
        if (binanceBtn) binanceBtn.disabled = true;
        refreshCoolDownDisplay('binance');
        binanceInterval = setInterval(() => {
            if (binanceCountdown > 0) {
                binanceCountdown--;
                if (binanceCountdown <= 0) {
                    clearInterval(binanceInterval);
                    binanceInterval = null;
                    if (binanceBtn) binanceBtn.disabled = false;
                    if (timerBinance) timerBinance.textContent = '';
                    binanceElapsed = '';
                } else {
                    refreshCoolDownDisplay('binance');
                }
            } else {
                clearInterval(binanceInterval);
                binanceInterval = null;
                if (binanceBtn) binanceBtn.disabled = false;
                if (timerBinance) timerBinance.textContent = '';
                binanceElapsed = '';
            }
        }, 1000);
    }
}