`); } timer = setInterval(() => { timeLeft--; if (timeLeft <= 0) { isBreak = !isBreak; if (currentMode === '25/5') { timeLeft = isBreak ? 5 * 60 : 25 * 60; } else { timeLeft = isBreak ? 10 * 60 : 50 * 60; } const audio = new Audio('data:audio/mp3;base64,SUQzBAAAAAAAI1RTU0UAAAAPAAADTGF2ZjU4Ljc2LjEwMAAAAAAAAAAAAAAA/+M4wAAAAAAAAAAAAEluZm8AAAAPAAAAEAAABVgANTU1NTU1Q0NDQ0NDUFBQUFBQXl5eXl5ea2tra2tra3l5eXl5eYaGhoaGhpSUlJSUlKGhoaGhoa+vr6+vr7y8vLy8vMrKysrKytnZ2dnZ2efn5+fn5/X19fX19QAAAAAAAAAAAAAAAAAAAAAA'); audio.volume = 0.5; audio.play(); } updateDisplay(); updateTitle(); }, 1000); } else { clearInterval(timer); updateTitle(); } updateDisplay(); } function resetTimer() { isRunning = false; isBreak = false; clearInterval(timer); timeLeft = currentMode === '25/5' ? 25 * 60 : 50 * 60; updateDisplay(); updateTitle(); if (popupWindow && !popupWindow.closed) { popupWindow.close(); popupWindow = null; } } function changeMode(mode) { currentMode = mode; document.getElementById('btn-25-5').classList.toggle('active', mode === '25/5'); document.getElementById('btn-50-10').classList.toggle('active', mode === '50/10'); resetTimer(); } updateDisplay();