/* General Styles */
body {
    font-family: Arial, sans-serif;
    background-color: #f0f8ff;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
    padding: 10px;
}

#app {
    text-align: center;
    background: #ffffff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 40%;
    box-sizing: border-box;
}

#header {
    display: block;
    text-align: center;
    padding: 20px 10px;
}

h1 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.5em;
}

#countdown {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    justify-content: center;
}

/* Time Unit Styling */
.time-unit {
    background: #e6f7ff;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    flex: 1 1 100px;
    max-width: 120px;
    text-align: center;
}

.time-unit span {
    font-size: 2em;
    color: #007acc;
    display: block;
}

.time-unit p {
    margin-top: 5px;
    font-size: 0.9em;
    color: #666;
}

footer {
    margin-top: 20px;
    font-size: 0.9em;
    color: #555;
}

/* Desktop Styles */
@media (min-width: 1024px) {
    #app {
        max-width: 800px;
        padding: 30px;
    }

    #countdown {
        flex-wrap: nowrap; /* Prevent wrapping */
        gap: 40px; /* Increase spacing between units */
        justify-content: space-between; /* Spread units evenly */
    }

    .time-unit {
        padding: 20px;
        max-width: 150px;
    }

    .time-unit span {
        font-size: 2.5em;
    }

    #app {
        max-width: 80%;
    }
}

/* Mobile Responsive Styles */
@media (max-width: 768px) {
    h1 {
        font-size: 1.2em;
    }

    #countdown {
        gap: 10px;
    }

    #app {
        max-width: 80%;
    }

    .time-unit {
        padding: 10px;
        max-width: 100px;
    }

    .time-unit span {
        font-size: 1.8em;
    }

    .time-unit p {
        font-size: 0.8em;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1em;
    }

    #app {
        padding: 15px;
        max-width: 80%;
    }

    .time-unit {
        padding: 8px;
        max-width: 80px;
    }

    .time-unit span {
        font-size: 1.5em;
    }

    .time-unit p {
        font-size: 0.7em;
    }

    footer {
        font-size: 0.8em;
    }
}