@import url('https://fonts.googleapis.com/css2?family=Nunito+Sans:opsz,wdth,wght@6..12,116.4,800&display=swap');

/* ||   RESET  || */

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

p{
    text-indent: var(--TEXT-INDENT);
}

img{
    display: block;
}

/* ||   VARIABLES   || */

:root{
    --MAIN-RADIALWHITE: whitesmoke;
    --MAIN-RADIALCOLOR: rgb(81, 72, 72);
    --COOL-WHITE: whitesmoke;

    --SIDEBARCOLOR: #7b525298;
    --FOOTERCOLOR: rgb(1, 2, 2);
    --HEADERCOLOR: rgb(91, 23, 23);
    --NAVCOLOR: rgb(161, 109, 161);

    --FOOTER-FONT-COLOR: var(--COOL-WHITE);
    --NAV-FONT-COLOR: rgb(119, 53, 53);
    --NAV-FONT-COLOR-HOVERFOCUS: rgb(31, 21, 21);
    --HEADER-FONT-COLOR: rgb(214, 169, 169);
    --PRATYUSHGUPTAISME-LINK-FONT-COLOR: rgb(161, 118, 118);
    --PRATYUSHGUPTAISME-HOVERFOCUS-FONT-COLOR: rgba(160, 125, 125, 0.827);
    --MAIN-FONT-COLOR: rgb(0, 0, 0);
    --FIGCAP-HIGHLIGHT: rgb(80, 255, 255);
    --FOCUS-HIGHLIGHT: rgb(162, 255, 0);
    --SIDEBAR-HOVERFOCUS: rgb(235, 215, 158);

    --FIGURECAPTION-FONT-SIZE: 1rem;
    --DEFAULT-FONT-SIZE: 1.5rem;
    --HEADER-FONTSIZE: 2.4rem;
    --FONT-FAMILY: 'Courier New', Courier, monospace;
    --XL-BOLD-FONTWEIGHT: 900; 
    --TEXT-INDENT:4%;
    --HEADERFONT: "Nunito Sans", sans-serif;
}

/* ||   PROPERTIES   || */

.body{
    background-color: var(--MAIN-RADIALCOLOR);
    font-family: var(--FONT-FAMILY);
    width: 100vw;
    height: 100vh;

    display: grid;
    grid-template-rows: 0.65fr 0.3fr repeat(5, 1fr) 0.55fr;
    grid-template-columns: 0.5fr repeat(7, 1fr);
    grid-template-areas: 
    "h h h h h h h h"
    "n n n n n n n n"
    "s m m m m m m m"
    "s m m m m m m m"
    "s m m m m m m m"
    "s m m m m m m m"
    "s m m m m m m m"
    "f f f f f f f f";
}

.header{
    background-color: var(--HEADERCOLOR);
    color: var(--HEADER-FONT-COLOR);
    grid-area: h;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: var(--HEADER-FONTSIZE);
    font-weight: var(--XL-BOLD-FONTWEIGHT);
    font-family: var(--HEADERFONT);
    padding:0.1em;
    text-decoration: 5px underline;
}

.PratyushGuptaIsMeLink, .PratyushGuptaIsMeLink:visited{
    text-decoration: none;
    color: var(--PRATYUSHGUPTAISME-LINK-FONT-COLOR);
    text-decoration: 5px underline;
}

.PratyushGuptaIsMeLink:hover, .PratyushGuptaIsMeLink:focus{
    cursor: pointer;
    color: var(--PRATYUSHGUPTAISME-HOVERFOCUS-FONT-COLOR);
}

.nav{
    background-color: var(--NAVCOLOR);    
    color: var(--NAV-FONT-COLOR);
    grid-area: n;
    display: flex;
    justify-content: space-evenly;
    font-size: var(--DEFAULT-FONT-SIZE);
    padding-bottom: 0.2%;
    padding-top: 0.2%;
}

.nav a, .nav a:visited{
    color: var(--NAV-FONT-COLOR);
}

.nav a:hover, .nav a:focus{
    color: var(--NAV-FONT-COLOR-HOVERFOCUS);
}

.nav a:focus{
    background-color: var(--FOCUS-HIGHLIGHT);
}

.nav a:active{
    color: var(--NAV-FONT-COLOR);
    background-color: rgba(1, 2, 2, 0);
}

.main{
    background-color: var(--MAIN-RADIALCOLOR);
    background-image: radial-gradient(var(--MAIN-RADIALWHITE), var(--MAIN-RADIALCOLOR));
    border: 1px solid black;
    padding: 1%;
    overflow-y: scroll;
    grid-area: m;
    color: var(--MAIN-FONT-COLOR);
    
    display: grid;    
}

.fig1cap{
    font-size: var(--FIGURECAPTION-FONT-SIZE);
}

body .main div span{
    background-color: var(--FIGCAP-HIGHLIGHT);
    margin-left: 20px;
}

.sidebar{
    background-color: var(--SIDEBARCOLOR);    
    grid-area: s;
    opacity: 0.8;
}

.sidebar a{
    display:block;
    border-radius: 20%;
}

.sidebar a:hover, .sidebar a:focus{
    background-color: var(--SIDEBAR-HOVERFOCUS);
}

.sidebar a:visited, .sidebar a{
    opacity: 0.85;
}  

.sidebar a:active{
    opacity: 1;
    filter: brightness(110%);
}

.sidebar a:first-child{
    margin-top: 30%;
}

.footer{
    background-color: var(--FOOTERCOLOR);
    grid-area: f;
    color: var(--FOOTER-FONT-COLOR);
}

/* ||   UTILITY CLASSES   || */

.floatright{
    float: right;
}

.displaynone{
    display: none;
}