/* Tema claro opcional */
body.light-mode{--bg:#edf4f8;--panel:#ffffff;--panel2:#f3f7fa;--text:#0b1520;--muted:#52677a;--line:#bcd0de;
background:linear-gradient(180deg,#f8fbfd,#eaf2f7);color:var(--text)}
body.light-mode .site-header{background:rgba(255,255,255,.94);border-color:#d6e1e8}
body.light-mode .main-nav a{color:#172536}
body.light-mode .theme-toggle,body.light-mode .language-button{background:#fff;color:#142332;border-color:#c6d4de}
body.light-mode .language-menu{background:#fff;border-color:#c6d4de}
body.light-mode .language-menu button{color:#142332}
body.light-mode .access-card,body.light-mode .content-card,body.light-mode .course-card,
body.light-mode .community-panel,body.light-mode .resource-strip,body.light-mode .video-section{
background:#fff;color:#10202d;border-color:#c6d7e3}
body.light-mode .access-card p,body.light-mode .content-card p,body.light-mode .course-card p,
body.light-mode .page-hero p,body.light-mode .video-section p{color:#52677a}