.book-tools{width:min(440px,calc(100% - 40px));box-sizing:border-box;border:1px solid #d9e5e2;border-radius:18px;padding:24px;color:#183532;background:white;max-height:85vh;overflow:auto}.book-tools::backdrop{background:rgba(15,38,35,.45)}.book-tools-head{display:flex;align-items:flex-start;gap:14px;margin-bottom:24px}.book-tools-head h2{font-family:Georgia,serif;font-size:26px;line-height:1.2;margin:0;flex:1}.book-tools-close{flex:none;width:36px;height:36px;border:0;border-radius:50%;font-size:26px;background:#eef4f2;color:#276f6d}.book-tools .card-actions{display:flex;flex-direction:column;gap:10px}.book-tools .card-button,.resource button.card-button{font-family:inherit;width:100%;box-sizing:border-box;font-size:15px;font-weight:600;min-height:46px}.book-offline{margin-top:10px}.book-offline button{font-family:inherit;display:block;width:100%;min-height:46px;border:1px solid #276f6d;border-radius:10px;padding:11px 18px;font-size:15px;font-weight:600;background:#fff;color:#276f6d}.book-offline [data-offline-status]:empty{display:none}

/* Keep modal options in the viewport on mobile WebKit after long-page scrolling. */
.book-tools[open]{position:fixed!important;inset:0!important;margin:auto!important;transform:none!important;max-height:calc(100dvh - 40px);overscroll-behavior:contain}