:root{--bg-color: #0d1117;--panel-bg: rgba(22, 27, 34, .8);--border-color: #30363d;--text-primary: #e6edf3;--text-secondary: #8b949e;--accent-color: #58a6ff;--accent-hover: #1f6feb;--success-color: #238636;--warning-color: #d29922;--danger-color: #f85149;--glass-bg: rgba(255, 255, 255, .05);--glass-border: rgba(255, 255, 255, .1);--shadow: 0 8px 32px 0 rgba(0, 0, 0, .37)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,Noto Sans TC,-apple-system,BlinkMacSystemFont,sans-serif;background-color:var(--bg-color);color:var(--text-primary);line-height:1.6;overflow-x:hidden;min-height:100vh}#app{display:flex;flex-direction:column;min-height:100vh}header{backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);background:var(--panel-bg);border-bottom:1px solid var(--border-color);padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center;position:sticky;top:0;z-index:100}.logo{display:flex;align-items:center;gap:.8rem}.logo .icon{font-size:1.5rem}.logo h1{font-size:1.25rem;font-weight:600;letter-spacing:-.5px}#main-nav{display:flex;gap:.5rem}.nav-btn{background:transparent;border:1px solid transparent;color:var(--text-secondary);padding:.5rem 1rem;border-radius:6px;cursor:pointer;font-size:.9rem;font-weight:500;transition:all .2s ease}.nav-btn:hover{background:var(--glass-bg);color:var(--text-primary)}.nav-btn.active{background:var(--glass-bg);color:var(--accent-color);border-color:var(--accent-color)}.nav-btn.highlight{background:var(--accent-color);color:#fff;border:none}.nav-btn.highlight:hover{background:var(--accent-hover)}main{flex:1;padding:2rem;max-width:1200px;margin:0 auto;width:100%}footer{text-align:center;padding:2rem;border-top:1px solid var(--border-color);color:var(--text-secondary);font-size:.85rem}.footer-content{display:flex;flex-direction:column;align-items:center;gap:1rem}.github-link{color:var(--text-secondary);transition:all .2s ease;display:flex;align-items:center;text-decoration:none}.github-link:hover{color:var(--accent-color);transform:translateY(-2px)}.github-icon{filter:drop-shadow(0 0 4px rgba(88,166,255,0));transition:all .2s ease}.github-link:hover .github-icon{filter:drop-shadow(0 0 8px rgba(88,166,255,.4))}.view-card{background:var(--panel-bg);border:1px solid var(--border-color);border-radius:12px;padding:2rem;box-shadow:var(--shadow);animation:fadeIn .4s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}h2{margin-bottom:1.5rem;font-weight:600}.description{color:var(--text-secondary);margin-bottom:2rem}.upload-box{border:2px dashed var(--border-color);border-radius:12px;padding:3rem;text-align:center;cursor:pointer;transition:border-color .2s}.upload-box:hover{border-color:var(--accent-color)}.btn{background:var(--accent-color);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:8px;font-weight:600;cursor:pointer;transition:opacity .2s}.btn:hover{opacity:.9}.btn-secondary{background:var(--border-color)}.btn-primary{background:var(--success-color)}.btn-danger{background:var(--danger-color)}.btn-handover{background:var(--accent-color);color:#fff;border:none;padding:.4rem .8rem;border-radius:6px;font-weight:600;cursor:pointer;transition:all .2s;font-size:.9rem}.btn-handover:hover{background:var(--accent-hover);transform:scale(1.05)}.btn-handover:active{transform:scale(.95)}.btn-group{display:flex;gap:.5rem}.btn-decrement{background:var(--border-color)}.btn-decrement:hover{background:var(--text-secondary)}.data-table{width:100%;border-collapse:collapse;margin-top:1rem}.data-table th,.data-table td{text-align:left;padding:1rem;border-bottom:1px solid var(--border-color)}.data-table th{color:var(--text-secondary);font-weight:500;font-size:.85rem;text-transform:uppercase}.handover-view{display:grid;grid-template-columns:1fr 400px;gap:2rem;height:calc(100vh - 250px)}.split-left{display:flex;flex-direction:column;gap:1.5rem;overflow-y:auto;padding-right:1rem}.split-right{position:sticky;top:0}.book-list-section{background:#161b2280;border-radius:10px;padding:1.5rem;border:1px solid var(--border-color)}.book-list-section h3{font-size:1rem;margin-bottom:1rem;color:var(--text-secondary);display:flex;justify-content:space-between}.input-group{display:flex;flex-direction:column;gap:.5rem}input[type=text]{background:#0d1117;border:1px solid var(--border-color);border-radius:8px;color:#fff;padding:1rem;font-size:1.1rem;width:100%}input[type=text]:focus{outline:none;border-color:var(--accent-color);box-shadow:0 0 0 2px #58a6ff4d}.spinner{width:40px;height:40px;border:4px solid var(--glass-bg);border-top:4px solid var(--accent-color);border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 1rem}@keyframes spin{to{transform:rotate(360deg)}}.hidden{display:none!important}::-webkit-scrollbar{width:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:10px}::-webkit-scrollbar-thumb:hover{background:var(--text-secondary)}