hibiscus/public/main.css

/* Default theme */
:root {
    /* Light theme */
    --text-light: #454545;
    --bg-light: #f5f0e1;

    --clickable-light: #f85552;
    --clickable-hover-light: #e66868;
    --clickable-label-light: #f5f2ee;
    --text-hover-light: #656565;

    --textarea-bg-light: #f5f2ee;
    --textarea-border-light: #454545;

    /* Dark theme */
    --text-dark: #f5f0e1;
    --bg-dark: #2c2825;

    --clickable-dark: #f85552;
    --clickable-hover-dark: #e66868;
    --clickable-label-dark: #f5f2ee;
    --text-hover-dark: #656565;

    --textarea-bg-dark: #383030;
    --textarea-border-dark: #454545;
}

body {
    color: var(--text-light);
    background-color: var(--bg-light);
    margin: auto auto;
    max-width: 640px;
    padding: 1em;
    line-height: 1.4;
    font-family: serif;
    min-height: 85vh;
    display: flex;
    flex-direction: column;
}
a, a:visited { color: var(--clickable-light); }
a:hover, a:visited:hover { color: var(--clickable-hover-light); }
a.no-accent, a.no-accent:visited { color: var(--text-light); }
a.no-accent:hover, a.no-accent:visited:hover { color: var(--text-hover-light); }

h2 { margin-bottom:12px; }
.list-title { margin-bottom: 0}
.list-desc { margin-top: 0 }

textarea, input {
    background: var(--textarea-bg-light);
    max-width: 640px;
    width: 100%;
    display: block;
    resize: vertical;
    outline: 0;
    box-shadow: none;
    border: 0.0625em solid var(--textarea-border-light);
    margin-bottom: 1em;
    font-size: 18px;
}
input { height: 2.5em; }

button {
    background-color: var(--clickable-light);
    border: none;
    color: var(--clickable-label-light);
    padding: 10px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 20px;
    margin: 4px 2px;
    border-radius: 4px;
    cursor: pointer;
    max-width: 640px;
    width: 100%;
}
button:hover { background-color: var(--clickable-hover-light); }

footer { margin-top: auto; }
header > h1, header > p {
    margin-bottom: 0;
    margin-top: 0;
}

/* Dark theme */
@media (prefers-color-scheme: dark) {
    body {
        color: var(--text-dark);
        background-color: var(--bg-dark);
    }
    textarea, input {
        color: var(--text-dark);
        background-color: var(--textarea-bg-dark);
        border-color: var(--textarea-border-dark)
    }

    a, a:visited { color: var(--clickable-dark); }
    a:hover, a:visited:hover { color: var(--clickable-hover-dark); }
    a.no-accent, a.no-accent:visited { color: var(--text-dark); }
    a.no-accent:hover, a.no-accent:visited:hover { color: var(--text-hover-dark); }

    button {
        background-color: var(--clickable-dark);
        color: var(--clickable-label-dark);
    }
    button:hover { background-color: var(--clickable-hover-dark); }
}