:root {
    --bg: #27232a;
    --bg-dark: #4b4b4b;
    --bg-light: #a4a4a4;
    --fg: #ffffff;
    --hl: #8080ff;
    --hl-light: #aeaeff;
}

body {
    background: var(--bg);
    margin: 0px;
    padding: 0px;
    font-family: "ubuntu", sans-serif;
    color: var(--fg);
}

h1, h2, h3, h4 {
    font-weight: lighter;
}

h1 {
    font-size: 36px;
}

h2 {
    font-size: 20px;
}

p {
    text-align: justify;
    font-size: 16px;
}

a {
    color: var(--hl);
}

form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

input {
    background: var(--bg-dark);
}

input[type="submit"], button {
    font-size: 14px;
    background: var(--hl);
    border-style: none;
    padding: 20px;
    border-radius: 10px;
    transition: background 0.1s;
    color: var(--fg);
    align-self: center;
}

input[type="submit"]:hover, button:hover {
    background: var(--hl-light);
}

article a {
    align-self: center;
}

input[type="text"], input[type="email"], input[type="number"], textarea {
    font: inherit;
    background: var(--bg-dark);
    border-style: solid;
    border-width: 1px;
    border-color: var(--bg);
    padding: 20px;
    border-radius: 10px;
    margin: 10px;
    color: var(--fg);
}

header {
    width: 100%;
    font-weight: lighter;
    text-align: center;
}

header nav {
    background-color: var(--bg-dark);
    padding: 20px;
    align-items: center;
    display: flex;
    flex-direction: row;
    justify-content: space-between;
}

header nav p:first-of-type {
    font-weight: bold;
}

header nav ul {
    margin: 0;
    padding: 0;
    display: flex;
    gap: 15px;
    list-style-type: none;
}

header a {
    padding: 5px;
    text-decoration: none;
    color: var(--fg);
    transition: color 0.1s;
}

header a:hover {
    color: var(--hl);
}

header p:first-of-type {
    text-align: center;
    font-weight: bold;
}

main {
    padding: 15px;
    padding-left: 100px;
    padding-right: 100px;
    display: flex;
    flex-direction: column;
    line-height: 1.7;
    gap: 20px;
}

main img {
    align-self: center;
}

main article {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

main article img {
    max-width: 100%;
    max-height: 600px;
}

main header section {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 15px;
}

footer {
    border-style: dashed;
    border-color: var(--bg-light);
    border-width: 2px 0px 0px 0px;
    color: var(--fg);
    text-align: center;
}

footer p {
    text-align: center;
    font-size: smaller;
}

video {
    max-height: 300px;
}

.error {
    background: #cc0000 !important;
}

/* Medium devices (landscape tablets, 768px and up) */
@media only screen and (max-width: 768px) {
    main {
        padding: 25px;
    }

    main article {
        display: flex;
        flex-direction: column;
        gap: 15px;
    }

    main header section {
        flex-direction: row;
    }

    video {
        width: 100%;
    }
}