/* Shelf and notebook use the signed-in app's light/dark surface tokens. */
.bs-toolbar[hidden],.bs-save-row [hidden],.bs-chapter[hidden]{display:none!important}
.bs-section{margin:34px 0 0;max-width:100%;min-width:0;text-align:left}
.bs-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:14px}
.bs-heading h2{font-size:20px}.bs-actions{display:flex;gap:8px;flex-wrap:wrap}.bs-filters{display:flex;gap:4px;flex-wrap:wrap;margin:12px 0}
.bs-filters button{border:1px solid transparent;background:transparent;border-radius:6px;padding:7px 12px;color:var(--muted)}
.bs-filters button[aria-pressed=true]{background:var(--raised);border-color:var(--line);color:var(--ink);box-shadow:var(--shadow-xs)}
.bs-filters span{font-size:11px;margin-left:5px}.bs-scroll{overflow-x:auto;max-width:100%;overscroll-behavior-x:contain;padding:12px 14px 0;background:var(--sidebar);border:1px solid var(--line);border-radius:var(--r-lg);scrollbar-width:thin}
.bs-row{display:flex;gap:22px;align-items:flex-end;min-height:242px;width:max-content;min-width:100%;border-bottom:9px solid var(--line-2);padding:0 12px 7px;margin-bottom:16px}
.bs-volume{display:block;flex:none;width:126px;transition:transform .18s}.bs-volume:hover{transform:translateY(-5px)}
.bs-cover{position:relative;display:flex;flex-direction:column;justify-content:space-between;gap:12px;width:126px;height:180px;padding:19px 13px 14px 19px;border-radius:2px 6px 6px 2px;background:var(--book-color,#546c60);color:#fff;border-left:7px solid #0002;box-shadow:3px 3px 0 var(--line-2),5px 6px 9px #0002;overflow:hidden;text-align:left}
.bs-cover:after{content:'';position:absolute;left:4px;top:0;bottom:0;border-left:1px solid #fff2}.bs-cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#fff}
.bs-cover:has(img) .bs-cover-title,.bs-cover:has(img) .bs-cover-author{position:relative;background:#000a;padding:3px;border-radius:3px}
.bs-cover-title{font-family:Georgia,serif;font-size:17px;line-height:1.18;overflow-wrap:anywhere;overflow:hidden;max-height:120px}.bs-cover-author{font-size:10px;line-height:1.3;overflow-wrap:anywhere}
.bs-caption{display:block;color:var(--muted);font-size:11px;margin-top:10px}.bs-empty{width:240px;align-self:center;color:var(--muted);padding:24px 0}.bs-book-head{display:flex;gap:26px;margin:24px 0 32px;align-items:center}.bs-book-head>.bs-cover{flex:none}.bs-book-head h1{font-size:30px;overflow-wrap:anywhere}.bs-meta{color:var(--muted);font-size:12px;margin:10px 0 15px;overflow-wrap:anywhere}
.bs-workspace{display:grid;grid-template-columns:230px minmax(0,1fr);border:1px solid var(--line);border-radius:var(--r-lg);overflow:hidden;min-height:460px}.bs-chapters{background:var(--sidebar);padding:18px;border-right:1px solid var(--line);min-width:0}.bs-chapters h2{font-size:14px}.bs-chapter{padding:10px 9px;border:1px solid transparent;border-radius:var(--r);margin:5px 0}.bs-chapter.selected{background:var(--raised);border-color:var(--line)}.bs-chapter a{display:block}.bs-chapter b{display:block;font-size:13px;overflow-wrap:anywhere}.bs-chapter small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-size:11px;margin-top:4px}.bs-page-actions{display:flex;gap:7px;margin-top:7px}.bs-page-actions button{background:none;border:0;color:var(--muted);padding:3px;font-size:11px}.bs-page-actions button:disabled{opacity:.3}
.bs-notebook{padding:24px;min-width:0}.bs-note-heading h2{font-size:21px;overflow-wrap:anywhere}.bs-toolbar{display:flex;flex-wrap:wrap;gap:4px;border:1px solid var(--line);background:var(--sidebar);border-radius:8px 8px 0 0;padding:7px}.bs-toolbar select,.bs-toolbar button{font:inherit;font-size:12px;border:1px solid var(--line);background:var(--bg);color:var(--ink);border-radius:5px;padding:6px 8px}.bs-toolbar button:disabled{opacity:.35}.bs-editor{min-height:300px;padding:20px;border:1px solid var(--line);border-top:0;outline:none;line-height:1.8;overflow-wrap:anywhere;white-space:pre-wrap}.bs-editor[contenteditable=false]{border-top:1px solid var(--line);border-radius:8px}.bs-editor:focus{box-shadow:inset 0 0 0 1px var(--ring)}.bs-editor p{margin:0 0 8px}.bs-editor h1,.bs-editor h2,.bs-editor h3{margin:12px 0 6px}.bs-editor h1{font-size:27px}.bs-editor h2{font-size:22px}.bs-editor h3{font-size:18px}.bs-editor ul,.bs-editor ol{padding-left:25px;margin:8px 0}.bs-quote{border-left:3px solid var(--line-2);padding-left:16px;margin:12px 0;color:var(--muted)}.bs-bold{font-weight:700}.bs-italic{font-style:italic}.bs-save-row{display:flex;justify-content:space-between;gap:10px;padding:10px 0;font-size:12px;color:var(--muted)}.bs-save-row [role=status]{overflow-wrap:anywhere}.bs-form{padding:24px;min-width:0}.bs-form h2{margin-bottom:18px}.bs-form label{display:block;margin:10px 0;font-size:13px}.bs-form input,.bs-form select{width:100%;display:block;padding:9px;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:6px;margin-top:5px;font:inherit}.bs-dates{display:grid;grid-template-columns:1fr 1fr;gap:12px}.bs-form-error{color:var(--danger)}
@media(max-width:700px){.bs-heading{align-items:flex-start}.bs-heading .bs-actions .ghost{font-size:12px;padding:0 9px}.bs-workspace{grid-template-columns:minmax(0,1fr)}.bs-chapters{border-right:0;border-bottom:1px solid var(--line)}#bs-chapter-list{max-height:210px;overflow-y:auto}.bs-notebook{padding:16px}.bs-book-head{gap:16px;align-items:flex-start}.bs-book-head>.bs-cover{width:90px;height:135px;padding:12px 8px}.bs-book-head .bs-cover-title{font-size:14px}.bs-book-head h1{font-size:24px}.bs-editor{padding:14px}.bs-section{margin-top:28px}.bs-scroll{padding-left:0;padding-right:0}.bs-book-head>div{min-width:0}}
@media(prefers-reduced-motion:reduce){.bs-volume{transition:none}}
/* Compact icon toolbar and chapter title actions. */
.bs-title-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}.bs-title-row h2{flex:0 1 auto;min-width:0;max-width:calc(100% - 96px)}.bs-rename{gap:6px;font-size:12px;height:32px;padding:0 10px;flex:none}.bs-rename svg{width:14px;height:14px}
.bs-chapter{position:relative;padding-right:32px}.bs-page-actions{position:absolute;top:7px;right:6px;margin:0}.bs-page-actions button{width:24px;height:28px;font-size:18px;line-height:1;border-radius:5px}.bs-page-actions button:hover{color:var(--danger);background:var(--hover)}
.bs-toolbar{align-items:center;gap:6px;padding:8px}.bs-toolbar select{width:auto;flex:0 1 136px;min-width:110px;max-width:100%;height:34px;padding:0 8px;font-size:12px}.bs-tool-group{display:flex;align-items:center;gap:3px}.bs-tool-group+.bs-tool-group{border-inline-start:1px solid var(--line);padding-inline-start:6px}.bs-toolbar button{display:inline-flex;align-items:center;justify-content:center;width:34px;height:34px;padding:7px;background:transparent;border-color:transparent}.bs-toolbar button svg{display:block;width:18px;height:18px;pointer-events:none}.bs-toolbar button:hover:not(:disabled){background:var(--hover);border-color:var(--line)}.bs-toolbar button[aria-pressed=true]{background:var(--accent);border-color:var(--line-2);color:var(--ink)}
.bs-cover:has(img) .bs-cover-title,.bs-cover:has(img) .bs-cover-author{display:none}
@media(max-width:480px){.bs-toolbar{gap:7px}.bs-toolbar select{flex-basis:100%;max-width:150px}.bs-toolbar button{width:36px;height:36px}.bs-title-row{gap:8px}.bs-title-row h2{flex-basis:auto}}