chore(frontend): add time braker

src/App.tsx

@@ -1,17 +1,28 @@
 import { useState } from 'react'
+import { BrowserRouter as Router, Routes, Route } from 'react-router-dom'
 import LoadingScreen from './components/LoadingScreen'
 import Home from './components/Home'
+import Navbar from './components/Navbar'
+import TimeBreaker from './components/TimeBreaker'
+import { type Language } from './translations'
 import './App.css'
 
 function App() {
   const [isLoading, setIsLoading] = useState(true)
+  const [language, setLanguage] = useState<Language>('en')
 
   return (
     <>
       {isLoading ? (
         <LoadingScreen onLoaded={() => setIsLoading(false)} />
       ) : (
-        <Home />
+        <Router>
+          <Navbar language={language} setLanguage={setLanguage} />
+          <Routes>
+            <Route path="/" element={<Home language={language} />} />
+            <Route path="/time-breaker" element={<TimeBreaker language={language} />} />
+          </Routes>
+        </Router>
       )}
     </>
   )

src/components/Home.tsx

@@ -1,92 +1,17 @@
-import React, { useState } from 'react';
-import logo from '../assets/logo.jpg';
+import React from 'react';
 import { FaFacebookF, FaInstagram, FaLinkedinIn } from 'react-icons/fa';
 import { SiTypescript, SiReact, SiJavascript } from 'react-icons/si';
+import { translations, type Language } from '../translations';
 
-type Language = 'en' | 'cs';
+interface HomeProps {
+    language: Language;
+}
 
-const translations = {
-    en: {
-        home: 'Home',
-        about: 'About',
-        contact: 'Contact',
-        welcome: 'WELCOME TO MY WORLD',
-        hello: "Hello, I'm",
-        job: 'a Developer.',
-        desc: "I use animation as a third dimension by which to simplify experiences and guiding through each and every interaction. I'm not adding motion just to spruce things up, but doing it in ways that matter.",
-        findMe: 'FIND WITH ME',
-        bestSkill: 'BEST SKILL ON',
-        aboutMe: 'About Me',
-        aboutDesc: 'I build accessible, pixel-perfect, and performant web experiences. Passionate about technology and design.',
-        getInTouch: 'Get In Touch',
-        contactDesc: 'Interested in working together?',
-        emailMe: 'Email me',
-    },
-    cs: {
-        home: 'Domů',
-        about: 'O mně',
-        contact: 'Kontakt',
-        welcome: 'VÍTEJTE V MÉM SVĚTĚ',
-        hello: "Ahoj, jsem",
-        job: 'Vývojář.',
-        desc: "Používám animaci jako třetí rozměr, kterým zjednodušuji zážitky a provázím každou interakcí. Nepřidávám pohyb jen pro efekt, ale dělám to způsoby, které mají smysl.",
-        findMe: 'NAJDETE MĚ NA',
-        bestSkill: 'DOVEDNOSTI',
-        aboutMe: 'O mně',
-        aboutDesc: 'Tvořím přístupné, pixel-perfect a výkonné webové zážitky. Vášnivý pro technologie a design.',
-        getInTouch: 'Napište mi',
-        contactDesc: 'Máte zájem o spolupráci?',
-        emailMe: 'Napište mi',
-    }
-};
-
-const Home: React.FC = () => {
-    const [language, setLanguage] = useState<Language>('en');
+const Home: React.FC<HomeProps> = ({ language }) => {
     const t = translations[language];
 
-    const handleNavClick = (id: string, e: React.MouseEvent) => {
-        e.preventDefault();
-        const element = document.getElementById(id);
-        if (element) {
-            element.scrollIntoView({ behavior: 'smooth' });
-        }
-    };
-
     return (
         <div className="home-container fade-in">
-            <nav className="navbar">
-                <div className="nav-content">
-                    <div
-                        className="logo-container"
-                        onClick={(e) => handleNavClick('home', e)}
-                        style={{ cursor: 'pointer' }}
-                    >
-                        <img src={logo} alt="David Fencl Logo" className="nav-logo" />
-                    </div>
-                    <div className="nav-right">
-                        <div className="language-switcher">
-                            <button
-                                className={`lang-btn ${language === 'en' ? 'active' : ''}`}
-                                onClick={() => setLanguage('en')}
-                            >
-                                EN
-                            </button>
-                            <span className="lang-separator">/</span>
-                            <button
-                                className={`lang-btn ${language === 'cs' ? 'active' : ''}`}
-                                onClick={() => setLanguage('cs')}
-                            >
-                                CZ
-                            </button>
-                        </div>
-                        <div className="links">
-                            <a href="#about" onClick={(e) => handleNavClick('about', e)}>{t.about}</a>
-                            <a href="#contact" onClick={(e) => handleNavClick('contact', e)}>{t.contact}</a>
-                        </div>
-                    </div>
-                </div>
-            </nav>
-
             <section id="home" className="hero fade-in">
                 <div className="hero-content">
                     <div className="hero-text">
@@ -143,3 +68,4 @@ const Home: React.FC = () => {
 };
 
 export default Home;
+

src/components/Navbar.tsx

@@ -0,0 +1,81 @@
+import React from 'react';
+import logo from '../assets/logo.jpg';
+import { translations, type Language } from '../translations';
+import { Link, useLocation, useNavigate } from 'react-router-dom';
+
+interface NavbarProps {
+    language: Language;
+    setLanguage: (lang: Language) => void;
+}
+
+const Navbar: React.FC<NavbarProps> = ({ language, setLanguage }) => {
+    const t = translations[language];
+    const location = useLocation();
+    const navigate = useNavigate();
+
+    const handleNavClick = (id: string, e: React.MouseEvent) => {
+        e.preventDefault();
+        if (location.pathname !== '/') {
+            navigate('/');
+            // Wait for navigation then scroll
+            setTimeout(() => {
+                const element = document.getElementById(id);
+                if (element) {
+                    element.scrollIntoView({ behavior: 'smooth' });
+                }
+            }, 100);
+        } else {
+            const element = document.getElementById(id);
+            if (element) {
+                element.scrollIntoView({ behavior: 'smooth' });
+            }
+        }
+    };
+
+    const handleHomeClick = (e: React.MouseEvent) => {
+        e.preventDefault();
+        if (location.pathname !== '/') {
+            navigate('/');
+        } else {
+            window.scrollTo({ top: 0, behavior: 'smooth' });
+        }
+    };
+
+    return (
+        <nav className="navbar">
+            <div className="nav-content">
+                <div
+                    className="logo-container"
+                    onClick={handleHomeClick}
+                    style={{ cursor: 'pointer' }}
+                >
+                    <img src={logo} alt="David Fencl Logo" className="nav-logo" />
+                </div>
+                <div className="nav-right">
+                    <div className="language-switcher">
+                        <button
+                            className={`lang-btn ${language === 'en' ? 'active' : ''}`}
+                            onClick={() => setLanguage('en')}
+                        >
+                            EN
+                        </button>
+                        <span className="lang-separator">/</span>
+                        <button
+                            className={`lang-btn ${language === 'cs' ? 'active' : ''}`}
+                            onClick={() => setLanguage('cs')}
+                        >
+                            CZ
+                        </button>
+                    </div>
+                    <div className="links">
+                        <Link to="/time-breaker">{t.timeBreaker}</Link>
+                        <a href="#about" onClick={(e) => handleNavClick('about', e)}>{t.about}</a>
+                        <a href="#contact" onClick={(e) => handleNavClick('contact', e)}>{t.contact}</a>
+                    </div>
+                </div>
+            </div>
+        </nav>
+    );
+};
+
+export default Navbar;

src/components/TimeBreaker.css

@@ -0,0 +1,162 @@
+.timer-container {
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    justify-content: center;
+    width: 100%;
+    max-width: 500px;
+    margin: 0 auto;
+    padding: 2rem;
+    background-color: rgba(30, 32, 36, 0.5);
+    border-radius: 12px;
+    border: 1px solid rgba(255, 255, 255, 0.05);
+    backdrop-filter: blur(10px);
+}
+
+.timer-display {
+    font-size: 5rem;
+    font-weight: 700;
+    font-variant-numeric: tabular-nums;
+    margin: 2rem 0;
+    padding: 1rem 2rem;
+    border-radius: 8px;
+    background-color: rgba(0, 0, 0, 0.2);
+    color: var(--text-color);
+    transition: background-color 0.3s ease, color 0.3s ease;
+    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
+}
+
+.timer-display.time-up {
+    background-color: rgba(244, 67, 54, 0.2);
+    color: #f44336;
+    animation: flash 1s infinite;
+    border: 1px solid rgba(244, 67, 54, 0.5);
+}
+
+@keyframes flash {
+
+    0%,
+    100% {
+        opacity: 1;
+    }
+
+    50% {
+        opacity: 0.8;
+    }
+}
+
+.controls-section {
+    display: flex;
+    flex-direction: column;
+    gap: 2rem;
+    width: 100%;
+}
+
+.slider-container {
+    width: 100%;
+    padding: 0 1rem;
+    display: flex;
+    flex-direction: column;
+    gap: 0.5rem;
+}
+
+.time-slider {
+    -webkit-appearance: none;
+    width: 100%;
+    height: 8px;
+    border-radius: 4px;
+    background: rgba(255, 255, 255, 0.1);
+    outline: none;
+    cursor: pointer;
+}
+
+.time-slider::-webkit-slider-thumb {
+    -webkit-appearance: none;
+    appearance: none;
+    width: 24px;
+    height: 24px;
+    border-radius: 50%;
+    background: var(--accent-color);
+    cursor: pointer;
+    transition: transform 0.2s;
+    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
+}
+
+.time-slider::-webkit-slider-thumb:hover {
+    transform: scale(1.1);
+    background: #747bff;
+}
+
+.time-slider::-moz-range-thumb {
+    width: 24px;
+    height: 24px;
+    border-radius: 50%;
+    background: var(--accent-color);
+    cursor: pointer;
+    border: none;
+    transition: transform 0.2s;
+    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
+}
+
+.time-slider::-moz-range-thumb:hover {
+    transform: scale(1.1);
+    background: #747bff;
+}
+
+.slider-labels {
+    display: flex;
+    justify-content: space-between;
+    color: var(--secondary-color);
+    font-size: 0.8rem;
+    font-weight: 500;
+}
+
+.main-controls {
+    display: flex;
+    justify-content: center;
+    gap: 1.5rem;
+}
+
+.control-btn {
+    min-width: 120px;
+    font-size: 1.1rem;
+    padding: 0.8rem 2rem;
+    text-transform: uppercase;
+    letter-spacing: 1px;
+}
+
+.start-btn {
+    background-color: var(--accent-color);
+    color: white;
+    box-shadow: 0 4px 15px rgba(100, 108, 255, 0.3);
+}
+
+.start-btn:hover {
+    background-color: #747bff;
+    box-shadow: 0 6px 20px rgba(100, 108, 255, 0.4);
+    transform: translateY(-2px);
+}
+
+.reset-btn {
+    background-color: transparent;
+    border: 1px solid var(--secondary-color);
+    color: var(--secondary-color);
+}
+
+.reset-btn:hover {
+    border-color: var(--text-color);
+    color: var(--text-color);
+    background-color: rgba(255, 255, 255, 0.05);
+}
+
+@media (max-width: 480px) {
+    .timer-display {
+        font-size: 3.5rem;
+    }
+
+    .control-btn {
+        min-width: 100px;
+        padding: 0.7rem 1.5rem;
+        font-size: 1rem;
+    }
+}

src/components/TimeBreaker.tsx

@@ -0,0 +1,163 @@
+import React, { useState, useEffect, useRef } from 'react';
+import { translations, type Language } from '../translations';
+import './TimeBreaker.css';
+
+interface TimeBreakerProps {
+    language: Language;
+}
+
+const DEFAULT_TIME_MINUTES = 22;
+const MAX_TIME_MINUTES = 180;
+const SECONDS_PER_MINUTE = 60;
+
+const TimeBreaker: React.FC<TimeBreakerProps> = ({ language }) => {
+    const t = translations[language];
+
+    const [timeLeft, setTimeLeft] = useState(DEFAULT_TIME_MINUTES * SECONDS_PER_MINUTE);
+    const [isRunning, setIsRunning] = useState(false);
+    const [isTimeUp, setIsTimeUp] = useState(false);
+
+    const audioContextRef = useRef<AudioContext | null>(null);
+    const intervalRef = useRef<number | null>(null);
+
+    // Format time as MM:SS
+    const formatTime = (seconds: number): string => {
+        const m = Math.floor(seconds / 60);
+        const s = seconds % 60;
+        return `${m.toString().padStart(2, '0')}:${s.toString().padStart(2, '0')}`;
+    };
+
+    // Update document title
+    useEffect(() => {
+        document.title = `${formatTime(timeLeft)} - ${t.timeBreaker}`;
+        return () => {
+            document.title = 'David Fencl - IT Consulting';
+        };
+    }, [timeLeft, t.timeBreaker]);
+
+    // Timer logic
+    useEffect(() => {
+        if (isRunning && timeLeft > 0) {
+            intervalRef.current = window.setInterval(() => {
+                setTimeLeft((prev) => {
+                    if (prev <= 1) {
+                        handleTimeUp();
+                        return 0;
+                    }
+                    return prev - 1;
+                });
+            }, 1000);
+        } else if (timeLeft === 0 && isRunning) {
+            handleTimeUp();
+        }
+
+        return () => {
+            if (intervalRef.current) {
+                clearInterval(intervalRef.current);
+            }
+        };
+    }, [isRunning]);
+
+    const handleTimeUp = () => {
+        setIsRunning(false);
+        setIsTimeUp(true);
+        playAlarm();
+        // Play alarm 3 times
+        setTimeout(playAlarm, 1000);
+        setTimeout(playAlarm, 2000);
+    };
+
+    const playAlarm = () => {
+        if (!audioContextRef.current) {
+            audioContextRef.current = new (window.AudioContext || (window as any).webkitAudioContext)();
+        }
+
+        const ctx = audioContextRef.current;
+        if (!ctx) return;
+
+        // Create oscillator
+        const oscillator = ctx.createOscillator();
+        const gainNode = ctx.createGain();
+
+        oscillator.type = 'sine';
+        oscillator.frequency.setValueAtTime(880, ctx.currentTime); // A5
+        oscillator.frequency.exponentialRampToValueAtTime(440, ctx.currentTime + 0.5); // Drop to A4
+
+        gainNode.gain.setValueAtTime(0.5, ctx.currentTime);
+        gainNode.gain.exponentialRampToValueAtTime(0.01, ctx.currentTime + 0.5);
+
+        oscillator.connect(gainNode);
+        gainNode.connect(ctx.destination);
+
+        oscillator.start();
+        oscillator.stop(ctx.currentTime + 0.5);
+    };
+
+    const handleStart = () => {
+        if (timeLeft === 0) return;
+        setIsRunning(true);
+        setIsTimeUp(false);
+    };
+
+    const handlePause = () => {
+        setIsRunning(false);
+    };
+
+    const handleReset = () => {
+        setIsRunning(false);
+        setIsTimeUp(false);
+        setTimeLeft(DEFAULT_TIME_MINUTES * SECONDS_PER_MINUTE);
+    };
+
+    return (
+        <div className="home-container fade-in">
+            <section className="hero">
+                <div className="timer-container">
+                    <h1 style={{ marginBottom: '1rem' }}>{t.timeBreaker}</h1>
+
+                    <div className={`timer-display ${isTimeUp ? 'time-up' : ''}`}>
+                        {formatTime(timeLeft)}
+                    </div>
+
+                    <div className="controls-section">
+                        <div className="slider-container">
+                            <input
+                                type="range"
+                                min="0"
+                                max="180"
+                                value={Math.ceil(timeLeft / 60)}
+                                onChange={(e) => {
+                                    const minutes = parseInt(e.target.value, 10);
+                                    setTimeLeft(minutes * 60);
+                                    if (minutes > 0) setIsTimeUp(false);
+                                }}
+                                className="time-slider"
+                            />
+                            <div className="slider-labels">
+                                <span>0m</span>
+                                <span>180m</span>
+                            </div>
+                        </div>
+
+                        <div className="main-controls">
+                            {!isRunning ? (
+                                <button className="btn control-btn start-btn" onClick={handleStart}>
+                                    {timeLeft > 0 && timeLeft < DEFAULT_TIME_MINUTES * SECONDS_PER_MINUTE ? 'Resume' : 'Start'}
+                                </button>
+                            ) : (
+                                <button className="btn control-btn start-btn" onClick={handlePause}>
+                                    Pause
+                                </button>
+                            )}
+                            <button className="btn control-btn reset-btn" onClick={handleReset}>
+                                Reset
+                            </button>
+                        </div>
+                    </div>
+                </div>
+            </section>
+        </div>
+    );
+};
+
+export default TimeBreaker;

src/translations.ts

@@ -0,0 +1,38 @@
+export type Language = 'en' | 'cs';
+
+export const translations = {
+    en: {
+        home: 'Home',
+        about: 'About',
+        contact: 'Contact',
+        timeBreaker: 'Time-Breaker',
+        welcome: 'WELCOME TO MY WORLD',
+        hello: "Hello, I'm",
+        job: 'a Developer.',
+        desc: "I use animation as a third dimension by which to simplify experiences and guiding through each and every interaction. I'm not adding motion just to spruce things up, but doing it in ways that matter.",
+        findMe: 'FIND WITH ME',
+        bestSkill: 'BEST SKILL ON',
+        aboutMe: 'About Me',
+        aboutDesc: 'I build accessible, pixel-perfect, and performant web experiences. Passionate about technology and design.',
+        getInTouch: 'Get In Touch',
+        contactDesc: 'Interested in working together?',
+        emailMe: 'Email me',
+    },
+    cs: {
+        home: 'Domů',
+        about: 'O mně',
+        contact: 'Kontakt',
+        timeBreaker: 'Time-Breaker',
+        welcome: 'VÍTEJTE V MÉM SVĚTĚ',
+        hello: "Ahoj, jsem",
+        job: 'Vývojář.',
+        desc: "Používám animaci jako třetí rozměr, kterým zjednodušuji zážitky a provázím každou interakcí. Nepřidávám pohyb jen pro efekt, ale dělám to způsoby, které mají smysl.",
+        findMe: 'NAJDETE MĚ NA',
+        bestSkill: 'DOVEDNOSTI',
+        aboutMe: 'O mně',
+        aboutDesc: 'Tvořím přístupné, pixel-perfect a výkonné webové zážitky. Vášnivý pro technologie a design.',
+        getInTouch: 'Napište mi',
+        contactDesc: 'Máte zájem o spolupráci?',
+        emailMe: 'Napište mi',
+    }
+};

work-break-timer/index.html

@@ -0,0 +1,44 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Work Break Timer</title>
+    <link rel="stylesheet" href="styles.css">
+</head>
+
+<body>
+    <div class="container">
+        <h1 class="title">Work Break Timer</h1>
+
+        <div class="timer-display" id="timerDisplay">22:00</div>
+
+        <div class="controls-section">
+            <div class="adjustment-buttons">
+                <button class="btn adjust-btn" data-minutes="1">+1 min</button>
+                <button class="btn adjust-btn" data-minutes="5">+5 min</button>
+                <button class="btn adjust-btn" data-minutes="10">+10 min</button>
+                <button class="btn adjust-btn" data-minutes="30">+30 min</button>
+            </div>
+
+            <div class="main-controls">
+                <button class="btn control-btn start-btn" id="startBtn">Start</button>
+                <button class="btn control-btn reset-btn" id="resetBtn">Reset</button>
+            </div>
+        </div>
+    </div>
+
+    <!-- Simple beep sound using data URI to avoid external dependencies if possible, 
+         but for better browser compatibility across strict policies, we might need user interaction first.
+         The requirements said "simple HTML5 audio element or generated beep". 
+         I'll use a generated beep in JS or a simple oscillator, but for the HTML structure, 
+         I'll leave a placeholder or just handle it in JS. 
+         Let's stick to handling it in JS with AudioContext for a generated beep as it's cleaner than a file. 
+         But the plan mentioned an audio element. I'll add a hidden one just in case I want to use a file later, 
+         but I'll primarily use JS for the beep as it's "pure" and doesn't require assets. -->
+
+    <script src="main.js"></script>
+</body>
+
+</html>

work-break-timer/main.js

@@ -0,0 +1,149 @@
+/**
+ * Work Break Timer Logic
+ */
+// Constants
+const DEFAULT_TIME_MINUTES = 22;
+const MAX_TIME_MINUTES = 180;
+const SECONDS_PER_MINUTE = 60;
+// State
+let timeLeft = DEFAULT_TIME_MINUTES * SECONDS_PER_MINUTE; // in seconds
+let isRunning = false;
+let intervalId = null;
+let audioContext = null;
+// DOM Elements
+const timerDisplay = document.getElementById('timerDisplay');
+const startBtn = document.getElementById('startBtn');
+const resetBtn = document.getElementById('resetBtn');
+const adjustButtons = document.querySelectorAll('.adjust-btn');
+/**
+ * Formats seconds into MM:SS string
+ */
+function formatTime(seconds) {
+    const m = Math.floor(seconds / 60);
+    const s = seconds % 60;
+    return `${m.toString().padStart(2, '0')}:${s.toString().padStart(2, '0')}`;
+}
+/**
+ * Updates the timer display
+ */
+function updateDisplay() {
+    timerDisplay.textContent = formatTime(timeLeft);
+    // Update document title
+    document.title = `${formatTime(timeLeft)} - Work Timer`;
+}
+/**
+ * Plays a simple beep sound using AudioContext
+ */
+function playAlarm() {
+    if (!audioContext) {
+        audioContext = new (window.AudioContext || window.webkitAudioContext)();
+    }
+    // Create oscillator
+    const oscillator = audioContext.createOscillator();
+    const gainNode = audioContext.createGain();
+    oscillator.type = 'sine';
+    oscillator.frequency.setValueAtTime(880, audioContext.currentTime); // A5
+    oscillator.frequency.exponentialRampToValueAtTime(440, audioContext.currentTime + 0.5); // Drop to A4
+    gainNode.gain.setValueAtTime(0.5, audioContext.currentTime);
+    gainNode.gain.exponentialRampToValueAtTime(0.01, audioContext.currentTime + 0.5);
+    oscillator.connect(gainNode);
+    gainNode.connect(audioContext.destination);
+    oscillator.start();
+    oscillator.stop(audioContext.currentTime + 0.5);
+}
+/**
+ * Handles the timer tick
+ */
+function onTick() {
+    if (timeLeft > 0) {
+        timeLeft--;
+        updateDisplay();
+    }
+    else {
+        // Time is up
+        pauseTimer();
+        timerDisplay.classList.add('time-up');
+        playAlarm();
+        // Play alarm 3 times
+        setTimeout(playAlarm, 1000);
+        setTimeout(playAlarm, 2000);
+    }
+}
+/**
+ * Starts or resumes the timer
+ */
+function startTimer() {
+    if (timeLeft === 0) {
+        // If time is 0, reset to default before starting? 
+        // Or just do nothing? Requirement says: "Start from currently set time".
+        // If currently set is 0, we can't really start.
+        // Let's assume if 0, we reset to default for convenience, or just return.
+        // Let's just return to be safe, or maybe the user wants to add time first.
+        if (timeLeft === 0)
+            return;
+    }
+    if (!isRunning) {
+        isRunning = true;
+        startBtn.textContent = 'Pause';
+        timerDisplay.classList.remove('time-up');
+        // Use window.setInterval to avoid TypeScript confusion with NodeJS.Timeout
+        intervalId = window.setInterval(onTick, 1000);
+    }
+    else {
+        // Pause
+        pauseTimer();
+    }
+}
+/**
+ * Pauses the timer
+ */
+function pauseTimer() {
+    isRunning = false;
+    startBtn.textContent = 'Resume';
+    if (intervalId !== null) {
+        clearInterval(intervalId);
+        intervalId = null;
+    }
+}
+/**
+ * Resets the timer
+ */
+function resetTimer() {
+    pauseTimer();
+    timeLeft = DEFAULT_TIME_MINUTES * SECONDS_PER_MINUTE;
+    startBtn.textContent = 'Start';
+    timerDisplay.classList.remove('time-up');
+    updateDisplay();
+    document.title = 'Work Break Timer';
+}
+/**
+ * Adjusts the time by adding minutes
+ */
+function adjustTime(minutes) {
+    const newTime = timeLeft + (minutes * SECONDS_PER_MINUTE);
+    const maxSeconds = MAX_TIME_MINUTES * SECONDS_PER_MINUTE;
+    if (newTime <= maxSeconds) {
+        timeLeft = newTime;
+        updateDisplay();
+        // If timer finished and we add time, remove the alarm style
+        if (timeLeft > 0) {
+            timerDisplay.classList.remove('time-up');
+        }
+    }
+    else {
+        // Cap at max
+        timeLeft = maxSeconds;
+        updateDisplay();
+    }
+}
+// Event Listeners
+startBtn.addEventListener('click', startTimer);
+resetBtn.addEventListener('click', resetTimer);
+adjustButtons.forEach(btn => {
+    btn.addEventListener('click', () => {
+        const minutes = parseInt(btn.getAttribute('data-minutes') || '0', 10);
+        adjustTime(minutes);
+    });
+});
+// Initialize
+updateDisplay();

work-break-timer/main.ts

@@ -0,0 +1,169 @@
+/**
+ * Work Break Timer Logic
+ */
+
+// Constants
+const DEFAULT_TIME_MINUTES = 22;
+const MAX_TIME_MINUTES = 180;
+const SECONDS_PER_MINUTE = 60;
+
+// State
+let timeLeft = DEFAULT_TIME_MINUTES * SECONDS_PER_MINUTE; // in seconds
+let isRunning = false;
+let intervalId: number | null = null;
+let audioContext: AudioContext | null = null;
+
+// DOM Elements
+const timerDisplay = document.getElementById('timerDisplay') as HTMLElement;
+const startBtn = document.getElementById('startBtn') as HTMLButtonElement;
+const resetBtn = document.getElementById('resetBtn') as HTMLButtonElement;
+const adjustButtons = document.querySelectorAll('.adjust-btn');
+
+/**
+ * Formats seconds into MM:SS string
+ */
+function formatTime(seconds: number): string {
+    const m = Math.floor(seconds / 60);
+    const s = seconds % 60;
+    return `${m.toString().padStart(2, '0')}:${s.toString().padStart(2, '0')}`;
+}
+
+/**
+ * Updates the timer display
+ */
+function updateDisplay(): void {
+    timerDisplay.textContent = formatTime(timeLeft);
+
+    // Update document title
+    document.title = `${formatTime(timeLeft)} - Work Timer`;
+}
+
+/**
+ * Plays a simple beep sound using AudioContext
+ */
+function playAlarm(): void {
+    if (!audioContext) {
+        audioContext = new (window.AudioContext || (window as any).webkitAudioContext)();
+    }
+
+    // Create oscillator
+    const oscillator = audioContext.createOscillator();
+    const gainNode = audioContext.createGain();
+
+    oscillator.type = 'sine';
+    oscillator.frequency.setValueAtTime(880, audioContext.currentTime); // A5
+    oscillator.frequency.exponentialRampToValueAtTime(440, audioContext.currentTime + 0.5); // Drop to A4
+
+    gainNode.gain.setValueAtTime(0.5, audioContext.currentTime);
+    gainNode.gain.exponentialRampToValueAtTime(0.01, audioContext.currentTime + 0.5);
+
+    oscillator.connect(gainNode);
+    gainNode.connect(audioContext.destination);
+
+    oscillator.start();
+    oscillator.stop(audioContext.currentTime + 0.5);
+}
+
+/**
+ * Handles the timer tick
+ */
+function onTick(): void {
+    if (timeLeft > 0) {
+        timeLeft--;
+        updateDisplay();
+    } else {
+        // Time is up
+        pauseTimer();
+        timerDisplay.classList.add('time-up');
+        playAlarm();
+        // Play alarm 3 times
+        setTimeout(playAlarm, 1000);
+        setTimeout(playAlarm, 2000);
+    }
+}
+
+/**
+ * Starts or resumes the timer
+ */
+function startTimer(): void {
+    if (timeLeft === 0) {
+        // If time is 0, reset to default before starting? 
+        // Or just do nothing? Requirement says: "Start from currently set time".
+        // If currently set is 0, we can't really start.
+        // Let's assume if 0, we reset to default for convenience, or just return.
+        // Let's just return to be safe, or maybe the user wants to add time first.
+        if (timeLeft === 0) return;
+    }
+
+    if (!isRunning) {
+        isRunning = true;
+        startBtn.textContent = 'Pause';
+        timerDisplay.classList.remove('time-up');
+
+        // Use window.setInterval to avoid TypeScript confusion with NodeJS.Timeout
+        intervalId = window.setInterval(onTick, 1000);
+    } else {
+        // Pause
+        pauseTimer();
+    }
+}
+
+/**
+ * Pauses the timer
+ */
+function pauseTimer(): void {
+    isRunning = false;
+    startBtn.textContent = 'Resume';
+    if (intervalId !== null) {
+        clearInterval(intervalId);
+        intervalId = null;
+    }
+}
+
+/**
+ * Resets the timer
+ */
+function resetTimer(): void {
+    pauseTimer();
+    timeLeft = DEFAULT_TIME_MINUTES * SECONDS_PER_MINUTE;
+    startBtn.textContent = 'Start';
+    timerDisplay.classList.remove('time-up');
+    updateDisplay();
+    document.title = 'Work Break Timer';
+}
+
+/**
+ * Adjusts the time by adding minutes
+ */
+function adjustTime(minutes: number): void {
+    const newTime = timeLeft + (minutes * SECONDS_PER_MINUTE);
+    const maxSeconds = MAX_TIME_MINUTES * SECONDS_PER_MINUTE;
+
+    if (newTime <= maxSeconds) {
+        timeLeft = newTime;
+        updateDisplay();
+
+        // If timer finished and we add time, remove the alarm style
+        if (timeLeft > 0) {
+            timerDisplay.classList.remove('time-up');
+        }
+    } else {
+        // Cap at max
+        timeLeft = maxSeconds;
+        updateDisplay();
+    }
+}
+
+// Event Listeners
+startBtn.addEventListener('click', startTimer);
+resetBtn.addEventListener('click', resetTimer);
+
+adjustButtons.forEach(btn => {
+    btn.addEventListener('click', () => {
+        const minutes = parseInt(btn.getAttribute('data-minutes') || '0', 10);
+        adjustTime(minutes);
+    });
+});
+
+// Initialize
+updateDisplay();

work-break-timer/styles.css

@@ -0,0 +1,144 @@
+:root {
+    --bg-color: #f5f5f5;
+    --text-color: #333;
+    --primary-color: #2196F3;
+    --primary-hover: #1976D2;
+    --secondary-color: #757575;
+    --secondary-hover: #616161;
+    --danger-color: #f44336;
+    --timer-bg: #fff;
+    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
+}
+
+* {
+    box-sizing: border-box;
+    margin: 0;
+    padding: 0;
+}
+
+body {
+    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
+    background-color: var(--bg-color);
+    color: var(--text-color);
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    min-height: 100vh;
+}
+
+.container {
+    background-color: var(--timer-bg);
+    padding: 2rem;
+    border-radius: 12px;
+    box-shadow: var(--shadow);
+    text-align: center;
+    width: 90%;
+    max-width: 400px;
+}
+
+.title {
+    font-size: 1.5rem;
+    margin-bottom: 1.5rem;
+    color: var(--text-color);
+}
+
+.timer-display {
+    font-size: 4rem;
+    font-weight: bold;
+    font-variant-numeric: tabular-nums;
+    margin-bottom: 2rem;
+    padding: 1rem;
+    border-radius: 8px;
+    background-color: #fafafa;
+    transition: background-color 0.3s ease, color 0.3s ease;
+}
+
+.timer-display.time-up {
+    background-color: var(--danger-color);
+    color: white;
+    animation: flash 1s infinite;
+}
+
+@keyframes flash {
+    0%, 100% { opacity: 1; }
+    50% { opacity: 0.8; }
+}
+
+.controls-section {
+    display: flex;
+    flex-direction: column;
+    gap: 1.5rem;
+}
+
+.adjustment-buttons {
+    display: flex;
+    justify-content: center;
+    gap: 0.5rem;
+    flex-wrap: wrap;
+}
+
+.btn {
+    border: none;
+    border-radius: 6px;
+    padding: 0.75rem 1rem;
+    font-size: 1rem;
+    cursor: pointer;
+    transition: background-color 0.2s, transform 0.1s;
+    font-weight: 500;
+}
+
+.btn:active {
+    transform: scale(0.98);
+}
+
+.adjust-btn {
+    background-color: #e0e0e0;
+    color: #333;
+    font-size: 0.9rem;
+    padding: 0.5rem 0.75rem;
+}
+
+.adjust-btn:hover {
+    background-color: #d5d5d5;
+}
+
+.main-controls {
+    display: flex;
+    justify-content: center;
+    gap: 1rem;
+}
+
+.control-btn {
+    min-width: 100px;
+    font-size: 1.1rem;
+    padding: 0.75rem 1.5rem;
+}
+
+.start-btn {
+    background-color: var(--primary-color);
+    color: white;
+}
+
+.start-btn:hover {
+    background-color: var(--primary-hover);
+}
+
+.reset-btn {
+    background-color: var(--secondary-color);
+    color: white;
+}
+
+.reset-btn:hover {
+    background-color: var(--secondary-hover);
+}
+
+@media (max-width: 480px) {
+    .timer-display {
+        font-size: 3rem;
+    }
+    
+    .control-btn {
+        min-width: 80px;
+        padding: 0.6rem 1.2rem;
+    }
+}