:root{--bg: #f8f8f8;--fg: #111111;--muted: #6b7280;--surface: #ffffffcc;--ring: rgba(17, 17, 17, .12);--reader-width: 680px;--reader-font-size: 18px;--reader-line-height: 1.7;--reader-font-family: ui-serif, Georgia, "Times New Roman", serif}[data-theme=dark]{--bg: #0b0c0f;--fg: #e6e6e6;--muted: #9aa0aa;--surface: #0f1115cc;--ring: rgba(230, 230, 230, .18)}[data-theme=sepia]{--bg: #f4f1e8;--fg: #5c4b37;--muted: #8b7355;--surface: #faf8f3cc;--ring: rgba(139, 115, 85, .15)}[data-theme=solarized]{--bg: #fdf6e3;--fg: #657b83;--muted: #93a1a1;--surface: #eee8d5cc;--ring: rgba(101, 123, 131, .18)}*{box-sizing:border-box}html,body,#app{height:100%}body{margin:0;background:var(--bg);color:var(--fg);font-family:ui-sans-serif,-apple-system,system-ui,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}.hero{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:24px;text-align:center;padding:40px 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#00000026,0 12px 24px #00000026}.book-cover-spine{position:absolute;left:10px;top:0;bottom:0;width:2px;background:#0000001a;box-shadow:1px 0 2px #0000001a}.book-cover-title{font-family:var(--reader-font-family);font-size:18px;font-weight:600;color:#333;margin:0 0 12px;line-height:1.3}.book-cover-author{font-size:14px;color:#666;font-style:italic;margin:0}@media (max-width: 600px){.book-cover-card{width:140px;height:196px;padding:12px}.book-cover-spine{left:6px}.book-cover-title{font-size:14px;margin-bottom:8px}.book-cover-author{font-size:12px}}.library{display:flex;flex-wrap:wrap;gap:24px;padding:20px;justify-content:center;max-width:1000px;margin:0 auto}.card-wrapper{position:relative;width:200px;height:280px}.card{width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;border:none;background:linear-gradient(135deg,#fff,#f0f0f0);color:var(--fg);border-radius:8px;padding:20px;text-align:center;cursor:pointer;transition:transform .3s,box-shadow .3s;position:relative;box-shadow:0 2px 4px #0000001a,0 8px 16px #0000001a;overflow:hidden}[data-theme=dark] .card{background:linear-gradient(135deg,#2a2a2a,#1a1a1a);box-shadow:0 4px 12px #0000004d}.card:hover{transform:translateY(-4px);box-shadow:0 4px 8px #00000026,0 12px 24px #00000026}.card:before{content:"";position:absolute;left:10px;top:0;bottom:0;width:2px;background:#0000001a;box-shadow:1px 0 2px #0000001a}.card-content{display:flex;flex-direction:column;align-items:center;width:100%;padding:0}.card-title{font-family:var(--reader-font-family);font-size:18px;font-weight:600;margin-bottom:12px;white-space:normal;overflow:hidden;display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;text-overflow:ellipsis;line-height:1.3;color:#333}[data-theme=dark] .card-title{color:#e6e6e6}.card-meta{margin-top:0;font-size:12px;color:var(--muted);font-style:italic}.card-delete{position:absolute;top:8px;right:8px;width:28px;height:28px;border-radius:50%;border:none;background:#ff4444e6;color:#fff;font-size:18px;line-height:1;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;opacity:0;transform:scale(.8);z-index:10;box-shadow:0 2px 4px #0003}.card:hover .card-delete{opacity:1;transform:scale(1)}.card-delete:hover{transform:scale(1.1);background:#f44}@media (max-width: 600px){.card-wrapper{width:140px;height:196px}.card{padding:12px}.card:before{left:6px}.card-title{font-size:14px;margin-bottom:8px}.card-meta{font-size:11px}}