@import url("reset.css");

@font-face {
    font-family: Hockey-is-lif;
    src: url("../fonts/hockey.ttf");
}

@font-face {
    font-family: LT-Streak;
    src: url("../fonts/ltstreak.ttf");
}

body {
    width: 100vw;
    height: 100vh;
    background-image: url("../images/background.jpg");
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;

    font-family: "LT-Streak";
    font-size: 14pt;
    line-height: 1.2;
    
    color: #aabbaf;
}

a {
    color: #99bb88;
}

h1 {
    font-size: 2em;
    color: #99bb88;
}

h2 {
    font-size: 1.5em;
    color: #99bb88;
}

#container {
    width: 100%;
    max-width: 980px;
    margin: 20px auto 20px auto;
}

#header {
    position: relative;
    background:
        linear-gradient(
            180deg,
            rgba(72, 72, 72, 0.9) 0%,
            rgba(20, 20, 20, 0.95) 100%
        );
    border-top: 1px solid rgb(100, 100, 100);
    border-left: 1px solid rgb(60, 60, 60);
    border-right: 1px solid rgb(50, 50, 50);
    border-bottom: 1px solid rgb(0, 0, 0);

    border-radius: 30px 30px 0 0;

    box-shadow: 0px 8px 8px 0 rgba(20, 20, 20, 0.5);
    box-shadow: 0px 0px 8px 4px rgba(20, 20, 20, 0.5);
}

#header::after {
    content: "";
    position: absolute;
    top: 4%;
    left: 0.75em;
    width: calc(100% - 1.5em);
    height: 40%;
    background: linear-gradient(
        to bottom,
        rgba(255, 255, 255, 0.3),
        rgba(255, 255, 255, 0.05)
    );
    border-radius: 30px 30px 30px 30px;
}

#footer {
    position: relative;
    background:
        linear-gradient(
            180deg,
            rgba(50, 50, 50, 0.9) 0%,
            rgba(72, 72, 72, 0.9) 15%,
            rgba(20, 20, 20, 0.95) 100%
        );
    border-top: 1px solid rgb(50, 50, 50);
    border-left: 1px solid rgb(50, 50, 50);
    border-right: 1px solid rgb(50, 50, 50);
    border-bottom: 1px solid rgb(0, 0, 0);

    border-radius: 0 0 20px 20px;

    box-shadow: 0px 8px 8px 4px rgba(20, 20, 20, 0.5);

    padding: 10px;
}

#header hgroup {
    padding: 20px 20px 10px 20px;
}

#nav-content {
    display: flex;
    flex-direction: row;
    
    box-shadow: 0px 8px 8px 0 rgba(20, 20, 20, 0.5);
    box-shadow: 0px 0px 8px 4px rgba(20, 20, 20, 0.5);
}

aside {
    border-top: 1px solid rgb(80, 80, 80);
    border-left: 1px solid rgb(80, 80, 80);
    border-right: 1px solid rgb(80, 80, 80);
    background: rgba(30, 30, 30, 0.5);

    box-shadow: 8px 0px 4px -4px rgba(20, 20, 20, 0.5);
}

#navs {
    display: flex;
    flex-direction: column;
    
    margin: 10px 8px 10px 8px;
    height: 100%;
    width: 150px;
}

.nav {
    border-radius: 8px 8px 4px 4px;
    box-shadow: 2px 2px 3px rgba(0,0,0,.8);
    margin-bottom: 12px;
}

.nav nav {
    display: flex;
    flex-direction: column;
    
    background: rgba(0, 0, 0, .5);
    
    padding: 4px;
    border-radius: 0 0 4px 4px;
    border-left: 1px solid #666666;
    border-right: 1px solid #666666;
    border-bottom: 1px solid #666666;
}

.nav header {
    position: relative;
    background-color: rgba(20, 20, 20, 1.0);
    background:
        linear-gradient(
            180deg,
            rgba(72, 72, 72, 0.9) 0%,
            rgba(20, 20, 20, 0.95) 100%
        );
    
    border-top: 1px solid #666666;
    border-left: 1px solid #666666;
    border-right: 1px solid #666666;
    border-radius: 8px 8px 0 0;

    padding: 4px 0 4px 0;
    font-weight: 600;
    text-align: center;
}

.nav header::after {
    content: "";
    position: absolute;
    top: 4%;
    left: 2.5%;
    width: 95%;
    height: 40%;
    background: linear-gradient(
        to bottom,
        rgba(255, 255, 255, 0.3),
        rgba(255, 255, 255, 0.05)
    );
    border-radius: 30px 30px 30px 30px;
}

.nav-item {
    border: 1px solid #0f0f0f;
    border-radius: 5px;

    display: flex;
    align-items: center;
    margin: auto auto 1px;
    width: 93%;
    
    position: relative;
}

main {
    background: rgba(30, 30, 30, 0.9);
    width: 100%;
    height: 100%;
}

#content {
    margin: 20px;

    min-height: 500px;
}

article .formula {
    margin-top: 8px;
    margin-bottom: 12px;
}

article p {
    margin-top: 8px;
    margin-bottom: 12px;
}

.footnote .label {
    padding-right: 1em;
}

.align-center {
    margin-left: auto;
    margin-right: auto;
}