/* ─── Open Serif Theme (books.sabiedu.com) ───
   Source: designmd.ai/chef/open-serif
   Encyclopedia-grade readability, serif, Wiki-blue */

:root {
    --primary: #3366CC;
    --primary-hover: #2A4D99;
    --secondary: #6B4BA1;
    --neutral: #72777D;
    --bg: #F6F6F6;
    --surface: #FFFFFF;
    --text-primary: #202122;
    --text-secondary: #54595D;
    --border: #C8CCD1;
    --success: #14866D;
    --warning: #EDAB00;
    --error: #DD3333;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #1A1A1A;
        --surface: #242424;
        --text-primary: #E7E5E4;
        --text-secondary: #A8A29E;
        --border: #333;
    }
}