*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--primary: #6366f1;--primary-light: #ede9fe;--amber: #f59e0b;--amber-light: #fef3c7;--gray-50: #f9fafb;--gray-100: #f3f4f6;--gray-200: #e5e7eb;--gray-500: #6b7280;--gray-700: #374151;--gray-900: #111827;--safe-bottom: env(safe-area-inset-bottom, 0px)}html,body{height:100%;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;background:#fff;color:var(--gray-900);-webkit-tap-highlight-color:transparent}#app{display:flex;flex-direction:column;height:100%;max-width:600px;margin:0 auto}#tab-content{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}#bottom-nav{display:flex;border-top:1px solid var(--gray-200);padding-bottom:var(--safe-bottom);background:#fff;flex-shrink:0}.nav-btn{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 0 6px;border:none;background:none;cursor:pointer;color:var(--gray-500);font-size:11px}.nav-btn.active{color:var(--primary)}.nav-icon{font-size:22px;line-height:1}.badge-row{display:flex;gap:6px;flex-wrap:wrap;margin:8px 0}.badge{padding:2px 8px;border-radius:4px;font-size:12px;font-weight:500}.badge.lcc{background:var(--primary-light);color:#4c1d95}.badge.ddc{background:var(--amber-light);color:#92400e}.book-list{flex:1;overflow-y:auto}.book-row{padding:12px 16px;border-bottom:1px solid var(--gray-100);cursor:pointer}.book-row:active{background:var(--gray-50)}.book-row-title{font-weight:600;font-size:15px}.book-row-meta{font-size:12px;color:var(--gray-500);margin-top:2px}.lcc-small{color:var(--primary);font-weight:500}.empty{text-align:center;padding:48px 16px;color:var(--gray-500);font-size:15px}.scan-tab{display:flex;flex-direction:column;height:100%}.viewfinder-wrap{position:relative;background:#000;aspect-ratio:4/3;overflow:hidden;flex-shrink:0}#scan-video{width:100%;height:100%;object-fit:cover;display:block}.reticle{position:absolute;top:20%;right:20%;bottom:20%;left:20%;border:2px solid rgba(255,255,255,.8);border-radius:8px;box-shadow:0 0 0 9999px #0006;pointer-events:none}.manual-input{display:flex;gap:8px;padding:12px 16px;border-bottom:1px solid var(--gray-100)}.manual-input input{flex:1;padding:10px 12px;border:1px solid var(--gray-200);border-radius:8px;font-size:16px}.manual-input button{padding:10px 16px;background:var(--primary);color:#fff;border:none;border-radius:8px;font-size:15px;cursor:pointer;font-weight:500}#scan-result{padding:16px}.loading,.not-found{text-align:center;padding:16px;color:var(--gray-500)}.scan-error{text-align:center;padding:16px;color:#dc2626}.camera-error{display:flex;align-items:center;justify-content:center;height:100%;color:#ffffffb3;font-size:14px;padding:16px;text-align:center}.preview-card{border:1px solid var(--gray-200);border-radius:12px;padding:16px}.book-title{font-weight:700;font-size:16px;margin-bottom:2px}.book-subtitle{color:var(--gray-500);font-size:13px;margin-bottom:4px}.book-meta{color:var(--gray-500);font-size:13px;margin-bottom:8px}.add-btn{width:100%;padding:10px;background:var(--primary);color:#fff;border:none;border-radius:8px;font-size:15px;cursor:pointer;font-weight:500;transition:background .15s}.add-btn.already{background:var(--gray-200);color:var(--gray-500);cursor:default}.shelves-tab{display:flex;flex-direction:column;height:100%}.lcc-chips{display:flex;gap:8px;overflow-x:auto;padding:12px 16px;-webkit-overflow-scrolling:touch;scrollbar-width:none;flex-shrink:0}.lcc-chips::-webkit-scrollbar{display:none}.chip{flex-shrink:0;padding:6px 12px;border:1px solid var(--gray-200);border-radius:999px;background:#fff;font-size:13px;cursor:pointer;white-space:nowrap}.chip.active{background:var(--primary);color:#fff;border-color:var(--primary)}.search-tab{display:flex;flex-direction:column;height:100%}.search-bar-wrap{padding:12px 16px;border-bottom:1px solid var(--gray-100);flex-shrink:0}#search-input{width:100%;padding:10px 14px;border:1px solid var(--gray-200);border-radius:10px;font-size:16px}.detail-sheet{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;display:flex;flex-direction:column;justify-content:flex-end}.detail-backdrop{position:absolute;top:0;right:0;bottom:0;left:0;background:#0006}.detail-panel{position:relative;background:#fff;border-radius:16px 16px 0 0;padding:20px 20px calc(20px + var(--safe-bottom));max-height:85vh;overflow-y:auto}.detail-close{position:absolute;top:16px;right:16px;background:var(--gray-100);border:none;border-radius:50%;width:32px;height:32px;font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center}.detail-title{font-size:20px;font-weight:700;margin-bottom:4px;padding-right:40px}.detail-subtitle{color:var(--gray-500);font-size:14px;margin-bottom:8px}.detail-meta{font-size:13px;color:var(--gray-700);margin-bottom:4px}.detail-physical{font-size:12px;color:var(--gray-500);margin:6px 0 10px}.detail-summary{margin:12px 0}.detail-summary summary{cursor:pointer;font-weight:600;font-size:14px;list-style:none}.detail-summary summary:before{content:"+ "}.detail-summary[open] summary:before{content:"− "}.detail-summary p{margin-top:8px;font-size:13px;line-height:1.6;color:var(--gray-700)}.chip-group{display:flex;gap:6px;flex-wrap:wrap;margin:6px 0}.subject-chip{padding:3px 8px;border-radius:4px;font-size:12px;background:var(--gray-100);color:var(--gray-700)}.genre-chip{padding:3px 8px;border-radius:4px;font-size:12px;background:var(--primary-light);color:#4c1d95}.detail-extra{font-size:12px;color:var(--gray-500);margin:3px 0}.remove-btn{width:100%;margin-top:20px;padding:12px;background:#fee2e2;color:#dc2626;border:none;border-radius:10px;font-size:15px;cursor:pointer}