:root {
    --okabe-black:           #000000;
    --okabe-white:           #FFFFFF;
    --okabe-teal:            #009E73;
    --okabe-gold:            #E69F00;
    --okabe-vermilion:       #D55E00;
    --okabe-grey:            #F5F5F5;

    --theme-color-canvas:             var(--okabe-white);
    --theme-color-text-reading:       var(--okabe-black);

    --theme-color-action-primary:     var(--okabe-teal);
    --theme-color-action-focus:       var(--okabe-vermilion);

    --theme-color-decoration-line:    var(--okabe-gold);
    --theme-color-block-background:   var(--okabe-grey);
}

body {
    background-color: var(--theme-color-canvas);
    color: var(--theme-color-text-reading);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
}

a {
    color: var(--theme-color-action-primary);
    text-decoration-thickness: from-font;
    text-underline-offset: 2px;
}

a:hover {
    background-color: var(--theme-color-action-primary);
    color: var(--theme-color-canvas);
    text-decoration: none;
    border-radius: 2px;
}

a:focus {
    outline: 3px solid var(--theme-color-action-focus);
    outline-offset: 2px;
}

button,
input[type="submit"],
input[type="reset"],
input[type="button"] {
    background-color: var(--theme-color-action-primary);
    color: var(--theme-color-canvas);
    border: 2px solid var(--theme-color-action-primary);
    font-weight: 600;
}

button:hover,
input[type="submit"]:hover,
input[type="reset"]:hover,
input[type="button"]:hover {
    background-color: var(--theme-color-text-reading);
    border-color: var(--theme-color-text-reading);
    color: var(--theme-color-canvas);
}

button:focus,
input[type="submit"]:focus,
input[type="reset"]:focus,
input[type="button"]:focus {
    outline: 3px solid var(--theme-color-action-focus);
    outline-offset: 2px;
}

blockquote {
    border-left: 8px solid var(--theme-color-decoration-line);
    padding: 1rem;
    margin-left: 0;
    background-color: transparent;
    font-style: italic;
}

hr {
    border: none;
    border-top: 4px solid var(--theme-color-decoration-line);
    margin: 2.5rem 0;
}

pre {
    background-color: var(--theme-color-block-background);
    border-left: 4px solid var(--theme-color-text-reading);
    border-radius: 0;
}

code {
    background-color: var(--theme-color-block-background);
    padding: 0.2rem 0.4rem;
    border-radius: 0;
}

pre code {
    background-color: transparent;
    padding: 0;
}

table {
    border-top: 2px solid var(--theme-color-text-reading);
    border-bottom: 2px solid var(--theme-color-text-reading);
}

th {
    border-bottom: 2px solid var(--theme-color-decoration-line);
}

input[type="text"],
input[type="email"],
input[type="password"],
textarea {
    border: 2px solid var(--theme-color-text-reading);
    background-color: var(--theme-color-canvas);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
textarea:focus {
    outline: 3px solid var(--theme-color-action-focus);
    outline-offset: 2px;
}