* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f0f0f0;
    color: #333;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    padding: 20px;
    text-align: center;
}

.clock {
    background-color: #ffffff;
    padding: 30px 50px;
    border-radius: 12px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    max-width: 400px;
    width: 90%;
}

#time {
    font-size: 3rem;
    margin-bottom: 10px;
}

#date {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

button {
    padding: 10px 20px;
    margin: 5px;
    font-size: 1rem;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.3s, color 0.3s;
    background-color: #333;
    color: #fff;
}

button:hover {
    background-color: #555;
}


.dark-mode {
    background-color: #333232;
    color: white;
}

.dark-mode .clock {
    background-color: #2c2c2c;
    box-shadow: 10px 10px 20px #1a1a1a, -10px -10px 20px #3d3d3d;
}

.dark-mode button {
    background-color: #2c2c2c;
    box-shadow: 5px 5px 10px #1a1a1a, -5px -5px 10px #3d3d3d;
    color: white;
}

@media (max-width: 600px) {
    #time {
        font-size: 2.5rem;
    }

    #date {
        font-size: 1rem;
    }

    button {
        font-size: 0.9rem;
        padding: 8px 16px;
    }
}