@font-face {
    font-family: "3270";
    src: url("font/3270.ttf") format("truetype");
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    width: 100vw;
    height: 100vh;
    background-color: black;
    transition:
        background-color 0.3s ease,
        color 0.3s ease;
}

body {
    font-family: "3270";
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    color: snow;
    font-size: 20px;
}

.text-muted {
    color: grey;
}

header {
    margin: 5px;
    border: 1px solid gray;
    height: 250px;
    width: calc(100% - 10px);
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

header h1 {
    margin: 0;
    font-size: 3rem;
    z-index: 2;
}

.header-content {
    position: relative;
    width: 100%;
    text-align: center;
}

h1 {
    margin: 0;
    font-size: 3rem;
}

nav {
    margin: 0 auto;
    width: 50%;
    display: flex;
    justify-content: space-around;
}

button {
    border: 1px solid gray;
    background: black;
    color: white;
    padding: 10px 20px;
    cursor: pointer;
    font-size: 1rem;
    font-family: inherit;
}

button.icon {
    font-size: xxx-large;
}

a {
    text-decoration: none;
    color: inherit;
}

button:hover {
    background: snow;
    color: black;
}

main {
    flex-grow: 1;
    margin: 5px;
    border: 1px solid gray;
    text-align: center;
}

table.qa {
    width: 90%;
    border: 1px solid #333;
    margin: auto;
}
table.qa th {
    border-bottom: 1px solid snow;
    font-weight: bolder;
    font-size: 1.5em;
}

table.qa td {
    padding: 5px;
}

table.qa tr:nth-child(odd) {
    background-color: rgba(0, 0, 0, 0.2);
}

table.qa tr:nth-child(even) {
    background-color: rgba(255, 255, 255, 0.1);
}

.links td:first-child {
    font-size: 1.2em;
    font-weight: bolder;
}

.links th:first-child {
    min-width: 15ch;
    padding: 0 10px;
}

.links a:hover {
    color: #cf0064;
}

iframe {
    width: 519px;
    height: 292px;
}

iframe.bigframe {
    width: 1038px;
    height: 584px;
}

#split {
    display: grid;
    grid-template-columns: 1fr 1fr;
}

#split p {
    padding: 20px;
    text-align: justify;
}

.img-size {
    width: 200px;
    height: auto;
}

h2 {
    margin: 10px;
    padding-top: 10px;
    font-size: 2.5rem;
}

footer {
    height: 35px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.big-icon {
    font-size: xx-large;
}

.footyear {
    font-size: smaller;
}

hr {
    border: 0;
    height: 2px;
    background: linear-gradient(
        to right,
        red,
        orange,
        yellow,
        green,
        blue,
        indigo,
        violet
    );
    margin: 20px 0; /* Optional: spacing */
}

#toggleBtn {
    font-size: 50px;
    cursor: pointer;
}

/* My awesome spinning cubes! */

.cube {
    width: 120px;
    height: 120px;
    position: absolute;
    top: 45px;
    transform-style: preserve-3d;
    background: black;
    box-sizing: border-box;
}

.cube.left {
    left: 55px;
    transform-origin: center center;
    transform: translateY(-50%);
    animation: rotateCubeLeft 5s linear infinite;
}

.cube.right {
    right: 55px;
    transform-origin: center center;
    transform: translateY(-50%);
    animation: rotateCubeRight 5s linear infinite;
}

.cube div {
    position: absolute;
    width: 120px;
    height: 120px;
    background: black;
    box-sizing: border-box;
}

.cube div.cfan {
    border: 1px solid black;
    background-image: url("img/cfan.png");
    background-size: cover;
}

.cube div.tux {
    border: 1px solid white;
    background-image: url("img/tux.png");
    background-size: cover;
}

.back {
    transform: rotateY(180deg) translateZ(60px);
}

.front {
    transform: translateZ(60px);
}
.right {
    transform: rotateY(90deg) translateZ(60px);
}
.left {
    transform: rotateY(-90deg) translateZ(60px);
}
.top {
    transform: rotateX(90deg) translateZ(60px);
}
.bottom {
    transform: rotateX(-90deg) translateZ(60px);
}

@keyframes rotateCubeRight {
    from {
        transform: rotateX(0deg) rotateY(0deg);
    }
    to {
        transform: rotateX(360deg) rotateY(360deg);
    }
}

@keyframes rotateCubeLeft {
    from {
        transform: rotateX(0deg) rotateY(360deg);
    }
    to {
        transform: rotateX(360deg) rotateY(0deg);
    }
}