* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: #f5f5f7;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: #1d1d1f;
}

.container {
    background-color: white;
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 320px;
}

h1 {
    margin-bottom: 30px;
    font-weight: 500;
    font-size: 28px;
}

.timer-display {
    font-size: 60px;
    font-weight: 300;
    padding: 20px 0;
    margin: 20px 0;
    width: 100%;
    text-align: center;
    color: #0066cc;
}

.controls {
    display: flex;
    gap: 15px;
    margin-top: 20px;
    width: 100%;
    justify-content: center;
}

button {
    background-color: #0066cc;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 10px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-weight: 500;
}

button:hover {
    background-color: #004499;
    transform: scale(1.05);
}

#pause-btn {
    background-color: #f56300;
}

#pause-btn:hover {
    background-color: #d45500;
}

#reset-btn {
    background-color: #8e8e93;
}

#reset-btn:hover {
    background-color: #636366;
}

@media (max-width: 600px) {
    .container {
        padding: 30px 20px;
        min-width: 300px;
    }
    
    .timer-display {
        font-size: 48px;
    }
    
    button {
        padding: 10px 16px;
        font-size: 14px;
    }
}