gnu-social/public/assets/default_theme/root.css

:root {
    --s: 0.666rem;
    --unit: 1rem;
    --m: 1.067rem;
    --xl: 1.138rem;
    --xxl: 3.2rem;
}

@media(prefers-color-scheme:dark) {
    :root {
        --foreground: #eff0f1;
        --background-hard: #0E0E0F;
        --background-card: #0E0E0F;
        --border: #26262C;
        --accent: #5ddbcf;
        --shadow: 0 5px 20px -10px rgba(255,255,255,0.1)!important;
        --shadow-inset-accent: inset 0 0 0 2px var(--accent);
        --background-checkerboard: repeating-conic-gradient(#ffffff66 0 90deg,#ffffff33 0 180deg) 0 0/40px 40px round;
        --gradient: linear-gradient(5deg,var(--border) -33%,transparent 66%) !important;
        --gradient-backwards: linear-gradient(-5deg,var(--border) -33%,transparent 66%) !important;
    }
}

@media(prefers-color-scheme:light) {
    :root {
        --foreground: #09090d;
        --background-hard: #ebebeb;
        --background-card: #f0f0f0;
        --border: #C2C2C2;
        --accent: #a22430;
        --shadow: 0 5px 20px -10px rgba(0,0,0,0.1)!important;
        --shadow-inset-accent: inset 0 0 0 2px var(--accent);
        --background-checkerboard: repeating-conic-gradient(#ffffff66 0 90deg,#ffffff33 0 180deg) 0 0/40px 40px round;
        --gradient: linear-gradient(10deg,var(--background-hard) 0,transparent) !important;
        --gradient-backwards: linear-gradient(290deg,var(--background-hard) 0,var(--background-card) 100%) !important;
    }
}