:root {
	--richen-size-ratio: 7px;
	
	--richen-color-default: rgba(0, 0, 0, 1); /* #000000 */
	--richen-color-default-bg: transparent;
	--richen-color-default-fg: var(--richen-color-default);
	
	--richen-color-primary-bg: rgba(28, 34, 39, 1);
	--richen-color-primary-fg: rgba(255, 255, 255, 1);
	
	--richen-color-secondary-bg: rgba(255, 255, 255, 1);
	--richen-color-secondary-fg: rgba(28, 34, 39, 1);
	
	--richen-border-color-secondary-fg: rgba(28, 34, 39, 1);
	
	--richen-border-color-primary: rgba(28, 34, 39, 1);
	--richen-border-style-primary: solid;
	--richen-border-width-primary: 1px;
	
	--richen-text-font-size-normal: 18px; /* 1em = 16px = average font-size for books */
	--richen-text-line-height-normal: 27px;
	--richen-text-font-weight-normal: normal;
	--richen-text-font-weight-bold: bold;

}

/*
 * ------------------------------
 * Reset
 * ------------------------------
 */

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

/*
 * ------------------------------
 * Fonts
 * ------------------------------
 */

@font-face {
    font-family: 'Open Sans';
    src: local('Open Sans'), local('Open Sans Regular'),
         url('../fonts/opensans/opensans.woff2') format('woff2'),
         url('../fonts/opensans/opensans.woff') format('woff'),
         url('../fonts/opensans/opensans.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

@font-face {
    font-family: "Raleway";
    src: local("Raleway"), local('Raleway Regular'),
         url('../fonts/raleway/raleway.woff2') format('woff2'),
         url('../fonts/raleway/raleway.woff') format('woff'),
         url('../fonts/raleway/raleway.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

@font-face {
    font-family: 'Raleway Thin';
    src: local("Raleway"), local('Raleway Thin'),
         url('../fonts/raleway/raleway-thin.woff2') format('woff2'),
         url('../fonts/raleway/raleway-thin.woff') format('woff'),
         url('../fonts/raleway/raleway-thin.ttf') format('truetype');
    font-weight: 100;
    font-style: normal;
}

/*
 * ------------------------------
 * General
 * ------------------------------
 */

html {
    height: 100%;
}


body {
    background: var(--richen-color-primary-bg);
    color: var(--richen-color-primary-fg);
    font-family: "Open Sans Light", "Open Sans", "Proxima Nova", "Source Sans Pro", "HelveticaNeue-Light", "Helvetica Neue Light", "Helvetica Neue", Arial, Helvetica, sans-serif;
    font-size: var(--richen-text-font-size-normal);
    font-weight: var(--richen-text-font-weight-normal);
    line-height: var(--richen-text-line-height-normal);
    width: 100%;
    height: 100%;
}

a {
    color: var(--richen-color-primary-fg);
    text-decoration: none;
}

a:active, a:focus, a:hover {
    text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
    font-family: "Raleway Thin", "Raleway";
    margin: calc(var(--richen-size-ratio) * 3) 0;
}

h1 {
    font-size: 36px;
    line-height: 54px;
}

h2 {
    font-size: 27px;
    line-height: 40.5px;
}

h3 {
    font-size: 22.5px;
    line-height: 33.75px;
}

h4 {
    font-size: 18px;
    line-height: 27px;
}

h5 {
    font-size: 15px;
}

h6 {
    font-size: 12px;
}

hr {
    border-top: var(--richen-border-width-primary) var(--richen-border-style-primary) var(--richen-border-color-primary);
    border-bottom: none;
    border-left: none;
    border-right: none;
}

/*
 * ------------------------------
 * Site
 * ------------------------------
 */

#content {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}


#content a {
    color: var(--richen-color-secondary-fg);
    text-decoration: none;
}

#content > #card {
    display: flex;
    flex-direction: column;
    gap: calc(var(--richen-size-ratio) * 3);
    
    background: var(--richen-color-secondary-bg);
    color: var(--richen-color-secondary-fg);
    padding: calc(var(--richen-size-ratio) * 5) calc(var(--richen-size-ratio) * 12);
    border-radius: 3px;
}

#content > #card > h1 {
    font-size: 56px;
    padding: 0;
    margin: 0;
}

#content > #card span#email {
    display: block;
    width: 100%;
    text-align: center;
}

#content > #card > ul {
    display: flex;
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    list-style: none;
    gap: calc(var(--richen-size-ratio) * 3);
}

#content > #card > ul > li {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
}

#content > #card > ul > li > a {
    border: var(--richen-border-width-primary) var(--richen-border-style-primary) rgba(28, 34, 39, .3);
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    padding: var(--richen-size-ratio);
    
    transition: border 500ms linear;
}

#content > #card > ul > li > a:hover {
    border: var(--richen-border-width-primary) var(--richen-border-style-primary) var(--richen-border-color-primary);
    border-radius: 3px;
}

/*
 * ------------------------------
 * Color Theme CSS
 * ------------------------------
 */
@media (prefers-color-scheme: light) {
    
}

@media (prefers-color-scheme: dark) {
    
}

/*
 * ------------------------------
 * Responsive CSS
 * ------------------------------
 */

/* 1920px+ */
@media only screen and (min-width: 1920px) {
    
}

/* WIDESCREEN */
@media only screen and (min-width: 1400px) {

}
/* DESKTOP */
@media only screen and (min-width: 1200px) {
    
}

/* LANDSCAPE TABLET/NETBOOK/LAPTOP */
@media only screen and (max-width: 1024px) {
    
}

/* LANDSCAPE TABLET/NETBOOK/LAPTOP */
@media only screen and (min-width: 1024px) {
    
}

/* TABLET/NETBOOK */
@media only screen and (max-width: 768px) {
    
}

/* SMALL TABLET */
@media only screen and (max-width: 600px) {
    #content > #card {
        padding: calc(var(--richen-size-ratio) * 3);
    }

    #content > #card > h1 {
        font-size: 42px;
    }
    
    #content > #card > ul {
        flex-direction: column;
    }
    
}
/* MOBILE LANDSCAPE */
@media only screen and (max-width: 480px) {
}

/* MOBILE PORTRAIT */
@media only screen and (max-width: 320px) {
    
}

/* LANDSCAPE ORIENTATION */
@media only screen and (orientation: landscape) {
    
}

/* PORTRAIT ORIENTATION */
@media only screen and (orientation: portrait) {
    
}