@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap";:root{--font-sans: "Inter", system-ui, sans-serif;--bg-primary: #fcfcfc;--bg-secondary: #f9fafb;--text-primary: #111827;--text-secondary: #6b7280;--border-color: #e5e7eb;--accent: #4f46e5;--accent-hover: #4338ca;--danger: #ef4444;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1)}[data-theme=dark]{--bg-primary: #1f2937;--bg-secondary: #111827;--text-primary: #f3f4f6;--text-secondary: #9ca3af;--border-color: #374151;--accent: #818cf8;--accent-hover: #6366f1}[data-theme=sepia]{--bg-primary: #f4ecd8;--bg-secondary: #e8dcc4;--text-primary: #4a3f30;--text-secondary: #7d6b5a;--border-color: #d4c5b0;--accent: #9b6c3f;--accent-hover: #7d5632}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background:var(--bg-secondary);color:var(--text-primary);overflow:hidden;height:100vh}#root{height:100%;display:flex;flex-direction:column}.library-container{height:100vh;overflow-y:auto;padding:2rem}.library-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;padding-bottom:1rem;border-bottom:1px solid var(--border-color)}.library-title{display:flex;align-items:center;gap:1rem}.library-icon{width:48px;height:48px;background:linear-gradient(135deg,var(--accent) 0%,var(--accent-hover) 100%);border-radius:12px;display:flex;align-items:center;justify-content:center;color:#fff}.library-actions{display:flex;gap:1rem}.btn-primary{background:var(--accent);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;font-weight:600;cursor:pointer;display:flex;align-items:center;gap:.5rem;transition:all .2s}.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}.btn-icon{width:44px;height:44px;border-radius:50%;border:1px solid var(--border-color);background:var(--bg-primary);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s}.btn-icon:hover{background:var(--bg-secondary);color:var(--text-primary)}.book-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:2rem;padding-bottom:4rem}.book-card{background:var(--bg-primary);border:1px solid var(--border-color);border-radius:12px;padding:1rem;cursor:pointer;transition:all .3s;position:relative}.book-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}.book-cover{width:100%;background:var(--bg-secondary);border-radius:8px;margin-bottom:.75rem;overflow:hidden;display:flex;align-items:center;justify-content:center}.book-cover img{width:100%;height:100%;object-fit:cover}.book-title{font-size:.875rem;font-weight:600;margin-bottom:.25rem;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.book-author{font-size:.75rem;color:var(--text-secondary)}.delete-btn{position:absolute;top:.5rem;right:.5rem;width:32px;height:32px;border-radius:50%;background:#fffffff2;border:none;color:var(--danger);cursor:pointer;opacity:0;transition:opacity .2s;display:flex;align-items:center;justify-content:center}.book-card:hover .delete-btn{opacity:1}.reader-container{display:flex;flex-direction:column;height:100vh;width:100%}.reader-header{height:64px;background:var(--bg-primary);border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;padding:0 1rem;flex-shrink:0}.reading-time{font-size:.875rem;color:var(--text-secondary);font-weight:500;margin-right:.5rem}.reader-main{flex:1;position:relative;overflow:hidden;display:flex;justify-content:center;align-items:center;background:var(--bg-secondary)}.reader-viewer{width:100%;height:100%;max-width:1200px}.reader-footer{height:48px;background:var(--bg-primary);border-top:1px solid var(--border-color);display:flex;align-items:center;padding:0 1rem;gap:1rem;flex-shrink:0}.progress-bar{flex:1;height:4px;background:var(--bg-secondary);border-radius:2px;overflow:hidden}.progress-fill{height:100%;background:var(--accent);transition:width .3s}.nav-btn{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;border-radius:50%;background:var(--bg-primary);border:1px solid var(--border-color);color:var(--text-primary);cursor:pointer;display:flex;align-items:center;justify-content:center;z-index:10;transition:all .2s;box-shadow:var(--shadow-md)}.nav-btn:hover{transform:translateY(-50%) scale(1.05)}.nav-btn.prev{left:1rem}.nav-btn.next{right:1rem}.controls-popover{position:absolute;top:70px;right:1rem;width:280px;background:var(--bg-primary);border:1px solid var(--border-color);border-radius:12px;padding:1rem;box-shadow:var(--shadow-lg);z-index:100}.control-section{margin-bottom:1rem}.control-section:last-child{margin-bottom:0}.control-label{font-size:.75rem;text-transform:uppercase;letter-spacing:.5px;color:var(--text-secondary);margin-bottom:.5rem;font-weight:600}.control-group{display:flex;gap:.5rem;background:var(--bg-secondary);padding:4px;border-radius:8px}.control-btn{flex:1;padding:.5rem;background:transparent;border:none;border-radius:6px;cursor:pointer;color:var(--text-secondary);font-size:.875rem;transition:all .2s}.control-btn.active{background:var(--bg-primary);color:var(--text-primary);font-weight:600;box-shadow:var(--shadow-sm)}.sidebar{position:absolute;top:64px;bottom:48px;right:0;width:320px;background:var(--bg-primary);border-left:1px solid var(--border-color);transform:translate(100%);transition:transform .3s;z-index:20;display:flex;flex-direction:column}.sidebar.open{transform:translate(0)}.sidebar-tabs{display:flex;border-bottom:1px solid var(--border-color)}.sidebar-tab{flex:1;padding:1rem;background:none;border:none;border-bottom:2px solid transparent;color:var(--text-secondary);cursor:pointer;font-weight:500}.sidebar-tab.active{color:var(--text-primary);border-bottom-color:var(--accent)}.sidebar-content{flex:1;overflow-y:auto}.sidebar-item{padding:1rem;border-bottom:1px solid var(--border-color);cursor:pointer;transition:background .2s}.sidebar-item:hover{background:var(--bg-secondary)}.selection-menu{position:fixed;background:#1f2937;color:#fff;border-radius:8px;padding:6px 12px;display:flex;align-items:center;gap:8px;z-index:1000;box-shadow:0 8px 16px #0000004d;transform:translate(-50%,-100%);margin-top:-8px}.color-btn{width:24px;height:24px;border-radius:50%;border:2px solid transparent;cursor:pointer;transition:transform .1s}.color-btn:hover{transform:scale(1.1);border-color:#fff}.menu-divider{width:1px;height:20px;background:#fff3}.menu-action{background:none;border:none;color:#d1d5db;cursor:pointer;padding:4px;display:flex;border-radius:4px}.menu-action:hover{color:#fff;background:#ffffff1a}