.rr_grid_livros{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:24px}.rr_card_livro{background:#fff;border-radius:16px;padding:16px;box-shadow:0 10px 30px rgb(0 0 0 / .08);text-align:center;overflow:hidden}.capa_do_livro{width:100%;border-radius:10px;margin-bottom:12px;transition:transform .4s ease}.rr_card_livro:hover .capa_do_livro{transform:scale(1.05)}.rr_card_livro h3{font-size:16px;margin:8px 0 12px}.rr_btn_favoritar{background:none;border:1px solid #ddd;border-radius:8px;padding:6px 10px;cursor:pointer;margin-bottom:10px}.rr_btn_favoritar.ativo{background:#ffe1e1;border-color:#ff8080}.rr_btn_ler,.rr_btn_baixar,.rr_btn_bloqueado{display:inline-block;margin:4px;padding:10px 16px;border-radius:10px;border:0;background:#111;color:#fff;text-decoration:none;cursor:pointer;font-size:14px}.rr_btn_bloqueado{background:#999}.rr_pdf_reader{width:100%;max-height:80vh;overflow-y:auto;border-radius:12px;box-shadow:0 10px 30px rgb(0 0 0 / .1)}.rr_pdf_iframe{width:100%;height:80vh;border:0}@media (max-width:768px){.rr_pdf_reader,.rr_pdf_iframe{max-height:70vh;height:70vh}}.rr_minhas_contribuicoes{background:#fafafa;border-radius:14px;padding:20px}.rr_auth_wrapper{max-width:420px;margin:0 auto;background:#fff;padding:28px;border-radius:16px;box-shadow:0 12px 30px rgb(0 0 0 / .08)}.rr_auth_tabs{display:flex;gap:10px;margin-bottom:20px}.rr_tab_btn{flex:1;padding:10px;border:0;border-radius:10px;background:#eee;cursor:pointer}.rr_tab_btn.active{background:#111;color:#fff}.rr_auth_form label{display:block;margin:12px 0 6px;font-weight:600}.rr_auth_form input{width:100%;padding:12px;border:1px solid #ddd;border-radius:10px}.rr_auth_form button{margin-top:16px;padding:12px 18px;border:0;border-radius:10px;background:#111;color:#fff;cursor:pointer;width:100%}.rr_auth_msg{margin-top:10px;font-size:14px;color:#c00}