* {
    margin: 0;
    padding: 0;
}


body {
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: white;

    background: linear-gradient(rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.4)), 
                url('https://images.unsplash.com/photo-1441974231531-c6227db76b6e?auto=format&fit=crop&w=1920&q=80');
    background-size: cover;
    background-position: center;
}

h1 {
    font-size: 3rem;
    letter-spacing: 5px;
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.7);
    margin-bottom: 10px;
}


.timer {
    font-size: 8rem;
    margin: 20px 0;
    font-weight: bold;
    text-shadow: 4px 4px 15px rgba(0, 0, 0, 0.8);
    background: rgba(255, 255, 255, 0.1);
    padding: 20px 50px;
    border-radius: 20px;
    backdrop-filter: blur(5px); 
}


button {
    padding: 15px 35px;
    font-size: 1.2rem;
    font-weight: bold;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    margin: 10px;
    transition: all 0.3s ease;
    text-transform: uppercase;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

button:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

button:active {
    transform: scale(0.95);
}

button:nth-of-type(1) {
    background-color: #2ecc71;
    color: white;
}

button:nth-of-type(2) {
    background-color: #e74c3c;
    color: white;
}

button:nth-of-type(3) {
    background-color: #f39c12;
    color: white;
}


@media (max-width: 600px) {
    h1 {
        font-size: 2rem;
    }

    .timer {
        font-size: 4rem; 
        padding: 15px 25px;
        width: 40%;
        height: 10%;
        margin: 15px auto;
        text-align: center;
    }

    button {
        width: 40%;
        margin: 8px 0;
        font-size: 1rem;
        padding: 12px;
    }
}