.document-actions{display:flex;align-items:center;justify-content:flex-end;gap:10px;flex-wrap:wrap}
.extra-reading-button{display:inline-flex;align-items:center;gap:9px;padding:11px 17px;border:1px solid #b66a35;border-radius:9px;background:linear-gradient(145deg,#fff8ea,#f1ddbd);box-shadow:0 7px 16px rgba(121,78,38,.18);color:#70451f;text-decoration:none;font-size:12px;font-weight:700;letter-spacing:.03em;transition:transform .18s,box-shadow .18s}
.extra-reading-button:before{content:"BOOK";display:grid;place-items:center;width:34px;height:24px;border-radius:4px;background:#b66a35;color:#fff;font-size:8px;letter-spacing:.08em}
.extra-reading-button:hover{transform:translateY(-2px);box-shadow:0 10px 21px rgba(121,78,38,.25)}
.extra-reading-button.back-to-pdf{background:linear-gradient(145deg,#eef7f5,#d8ebe6);border-color:#477e76;color:#234f49}
.extra-reading-button.back-to-pdf:before{content:"PDF";background:#477e76}
.ebook-extra-panel{overflow:hidden;border:1px solid #d6c8af;border-radius:14px;background:#f8f4e9;box-shadow:0 10px 28px rgba(62,49,31,.12)}
.ebook-extra-panel>header{display:flex;align-items:flex-start;justify-content:space-between;gap:22px;padding:18px 22px;border-bottom:1px solid #ddd0b8;background:linear-gradient(135deg,#fffaf0,#eee4d1)}
.ebook-extra-panel h3{margin:4px 0 5px;font:600 23px 'Fraunces',serif;color:var(--ink)}
.ebook-extra-panel header p:last-child{max-width:720px;margin:0;color:#61716c;font-size:13px;line-height:1.55}
.ebook-owned-badge{flex:none;padding:7px 10px;border-radius:99px;background:#e4eee9;color:#315d56;font-size:10px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}
.ebook-extra-frame{display:block;width:100%;height:72vh;min-height:620px;border:0;background:#fffdf8}
@media(max-width:820px){.document-actions{justify-content:flex-start}.ebook-extra-panel>header{flex-direction:column}.ebook-extra-frame{height:68vh;min-height:500px}.ebook-owned-badge{display:none}}