/* Root level custom variables */
:root {
    --main_width: 21vw;
    --general_margin: 2vw;
    --square_color: hsl(0,0%,100%);
    --main_color: #F0F0F0 ;
    --roundness: 3vw;
    --buttons_text_color: #FFFFFF ;
    --buttons_color: #4CAF50 ;
    --buttons_color_hover: #5ed062  ;
    --buttons_color_active: #317134  ;
    --indicator_text_color: #333333;
    --slider_background: #A9A9A9 ;
    --slider_thumb_color: #707070  ;
    --slider_thumb_color_hover: #555555  ;
    --border: 0.15vw;
    --border_color: #000;
    --credits_div_color: #FFFFFF;
}

/* Global reset for margin, padding, and font */
* {
    margin: 0;
    padding: 0;
    font-family: "Segoe UI";
    font-weight: bold;
    font-size: 0.6vw;
    user-select: none; /* Prevent text selection */
}

/* Body styling */
body {
    background-color: var(--square_color);
}

/* Main container styling */
#main {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: var(--main_width);
    background-color: var(--main_color);
    display: grid;
    padding: var(--general_margin);
    border-radius: var(--roundness);
    border-width: var(--border);
    border-color: var(--border_color);
    border-style: solid;
}

/* Color square styling */
#color_square {
    --size: var(--main_width);
    background-color: var(--square_color);
    width: var(--size);
    height: var(--size);
    border-radius: var(--roundness);
    margin-bottom: var(--general_margin);
    border-width: var(--border);
    border-color: var(--border_color);
    border-style: solid;
}

/* Grid layout for various elements */
#color_square {grid-area: 1 / 1 / 2 / 4;}
#hue_indicator {grid-area: 2 / 1 / 3 / 2;}
#saturation_indicator {grid-area: 3 / 1 / 4 / 2;}
#lightness_indicator {grid-area: 4 / 1 / 5 / 2;}
#hue {grid-area: 2 / 2 / 3 / 4;}
#saturation {grid-area: 3 / 2 / 4 / 4;}
#lightness {grid-area: 4 / 2 / 5 / 4;}
#HSL {grid-area: 5 / 1 / 6 / 4;}

/* Button styling */
button {
    margin-top: var(--general_margin);
    width: 100%;
    height: 3vw;
    border-radius: var(--roundness);
    border-width: 0;
    background-color: var(--buttons_color);
    color: var(--buttons_text_color);
    font-size: 1.5vw;
    font-weight: 500;
    transition: box-shadow 0.3s;
}
button:hover {
    background-color: var(--buttons_color_hover);
    box-shadow: #000 0.3vw 0.3vw;
}
button:active {background-color: var(--buttons_color_active);}

/* Slider indicators styling */
p {
    font-size: 1vw;
    text-align: center;
    color: var(--indicator_text_color);
}

/* Slider styling */
input {
    width: 13vw;
    justify-self: left;
    align-self: center;
    appearance: none;
    outline: none;
    height: 1vw;
    background-color: var(--slider_background);
    border-radius: var(--roundness);
}
input::-webkit-slider-thumb {
    -webkit-appearance: none;
    height: 1vw;
    width: 2vw;
    border-radius: var(--roundness);
    background-color: var(--slider_thumb_color);
}
input::-webkit-slider-thumb:hover {background-color: var(--slider_thumb_color_hover);}

/*Credits styling*/
#credits{cursor: default;}
#creditsdiv{
    display: grid;
    width: 10vw;
    height: 1.5vw;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    top: 2vw;
    background-color: var(--credits_div_color);
    border-radius: var(--roundness);
    border-style: solid;
    border-width: var(--border);
    border-color: var(--border_color);
    align-items: center;
    justify-items: center;
    transition: box-shadow 0.3s;
}
#creditsdiv:hover{
    box-shadow: #000 0.3vw 0.3vw;
}
#github_icon{
    width: 1vw;
    height: 1vw;
    grid-area: 1 / 1 / 2 / 2;
    float: right;
    margin-left: 0.2vw;
}
#credits_p{
    grid-area: 1 / 2 / 2 / 3;
    text-decoration: none;
    color: #000;
    cursor: default;
    margin-right: 0.2vw;
    margin-bottom: 0.12vw;
    font-size: 0.67vw;
}

/* Optimizing To Mobile */
@media (max-width: 770px){
    :root{
        --roundness: 6vw;
    }
    #main{
        width: 90%;
        height: 70%;
    }
    #color_square{
        width: 80vw;
        height: 80vw;
        align-self: center;
        justify-self: center;
    }
    button{
        width: 70vw;
        height: 9vw;
        justify-self: center;
        align-self: center;
        font-size: 4vw;
        font-weight: bold;
    }
    button:hover {
        box-shadow: #000 1vw 1vw;
    }
    input{
        width: 90%;
        height: 4vw;
    }
    input::-webkit-slider-thumb{
        width: 3vw;
        height: 5vw;
    }
    p{
        align-self: center;
        font-size: 4vw;
    }
    #creditsdiv{
        width: 40vw;
        height: 6vw;
    }
    #creditsdiv:hover{
        box-shadow: #000 1vw 1vw;
    }
    #credits_p{
        font-size: 2.3vw;
    }
    #github_icon{
        width: 4vw;
        height: 4vw;
    }
}