@import url('https://fonts.googleapis.com/css2?family=Roboto:wght@400;700&display=swap');

/* general style */
:root {
    --color-body: #f0f0f5;
    --color-header: #2a2aca;
    --color-font: #5e5e75;
    --color-light-white: #fafafa;
}

html {
    user-select: none;
}

body {
    overflow: none;
    min-height: 100vh;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    background-color: var(--color-body);
    color: var(--color-font);
    font-family: 'Roboto', sans-serif;
}

/* heading */
header h1 {
    position: absolute;
    top: 10%;
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-header);
}

/* main */
form {
    background-color: var(--color-light-white);
    padding: 1rem;
    border-radius: 10px;
}

label {
    padding-right: 0.3rem;
}

#inputNum {
    padding: 0.2rem;
    padding-left: 0.3rem;
    color: #4d4d4d;
}

#inputNum::-webkit-outer-spin-button,
#inputNum::-webkit-inner-spin-button {
    -webkit-appearance: none;
}

#inputNum:focus {
    outline-color: #6464c6;
}

#inputNum::placeholder {
    color: #9d9d9d;
}

#inputBtn {
    background-color: var(--color-header);
    border: none;
    padding: 0.3rem 0.5rem;
    border-radius: 5px;
    color: var(--color-light-white);
    cursor: pointer;
}

/* reset button, from JS */
#reset {
    color: var(--color-light-white);
    border: none;
    background-color: rgb(5, 130, 89);
    padding: 0.3rem 0.5rem;
    border-radius: 5px;
    cursor: pointer;
}

/* footer */
footer {
    position: absolute;
    bottom: 5%;
}

/* counter, from JS */
footer span {
    color: var(--color-header);
    font-weight: bold;
}

/* page flexibility on screen size */
@media screen and (max-width:500px) {
    header h1 {
        position: absolute;
        top: 5%;
        left: 50%;
        transform: translateX(-50%);
        font-size: 1.3rem;
    }

    form {
        display: flex;
        flex-direction: column;
        justify-content: center;
    }

    label {
        text-align: center;
        padding-bottom: 0.3rem;
        font-size: 0.7rem;
    }

    #inputNum {
        margin-bottom: 1rem;
    }

    #msg {
        font-size: 0.9rem;
        text-align: center;
    }

    #countLine {
        font-size: 0.8rem;
    }
}