:root{--color-primary: #1e40af;--color-primary-light: #3b82f6;--color-bg: #f1f5f9;--color-surface: #ffffff;--color-border: #e2e8f0;--color-text: #1e293b;--color-text-muted: #64748b;--color-success: #16a34a;--color-warning: #d97706;--color-danger: #dc2626;--color-info: #0284c7;--radius: 8px;--sidebar-width: 240px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Noto Sans TC,sans-serif;color:var(--color-text);background:var(--color-bg);line-height:1.6}.app-layout{display:flex;min-height:100vh}.sidebar{width:var(--sidebar-width);background:var(--color-surface);border-right:1px solid var(--color-border);padding:1.5rem 0;position:fixed;top:0;bottom:0;overflow-y:auto;display:flex;flex-direction:column;z-index:50}.sidebar-brand{font-size:1.125rem;font-weight:700;color:var(--color-primary);padding:0 1.25rem 1.25rem;border-bottom:1px solid var(--color-border);margin-bottom:.5rem}.sidebar-nav{display:flex;flex-direction:column;flex:1}.nav-item{display:flex;align-items:center;gap:.75rem;padding:.75rem 1.25rem;text-decoration:none;color:var(--color-text-muted);font-size:.9rem;font-weight:500;transition:background .15s,color .15s;border-left:3px solid transparent}.nav-item:hover{background:var(--color-bg);color:var(--color-text)}.nav-item.active{color:var(--color-primary);background:#eff6ff;border-left-color:var(--color-primary);font-weight:600}.nav-icon{font-size:1.125rem}.sidebar-footer{padding:1rem 1.25rem;border-top:1px solid var(--color-border);margin-top:auto}.btn-logout{width:100%;padding:.5rem 1rem;background:none;border:1px solid var(--color-border);border-radius:6px;color:var(--color-text-muted);cursor:pointer;font-size:.875rem;transition:all .15s}.btn-logout:hover{background:#fee2e2;color:var(--color-danger);border-color:var(--color-danger)}.main-content{margin-left:var(--sidebar-width);flex:1;padding:2rem;background:var(--color-bg);min-height:100vh}.main-content h1{font-size:1.5rem;font-weight:700;margin-bottom:.25rem}.main-content h2{font-size:1.125rem;font-weight:600;color:var(--color-text);margin-bottom:1rem}.stats-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1rem}.stat-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:1.25rem}.stat-card .label{color:var(--color-text-muted);font-size:.875rem}.stat-card .value{font-size:1.75rem;font-weight:700;margin-top:.25rem}.skeleton{background:linear-gradient(90deg,#f1f5f9 25%,#e2e8f0,#f1f5f9 75%);background-size:200% 100%;animation:shimmer 1.5s infinite;min-height:80px}@keyframes shimmer{0%{background-position:200% 0}to{background-position:-200% 0}}.data-table{width:100%;border-collapse:collapse;background:var(--color-surface);border-radius:var(--radius);overflow:hidden}.data-table th{background:var(--color-bg);text-align:left;padding:.75rem 1rem;font-weight:600;font-size:.8125rem;color:var(--color-text-muted);border-bottom:1px solid var(--color-border);white-space:nowrap}.data-table td{padding:.75rem 1rem;border-bottom:1px solid var(--color-border);font-size:.875rem}.data-table tr:hover td{background:#f8fafc}.badge{display:inline-block;padding:.2rem .5rem;border-radius:4px;font-size:.75rem;font-weight:600}.badge-warning{background:#fef3c7;color:#92400e}.badge-danger{background:#fee2e2;color:#991b1b}.badge-success{background:#dcfce7;color:#166534}.badge-info{background:#dbeafe;color:#1e40af}.btn{display:inline-flex;align-items:center;gap:.375rem;padding:.5rem 1rem;border-radius:6px;text-decoration:none;font-weight:500;font-size:.875rem;border:1px solid var(--color-border);cursor:pointer;transition:all .15s;background:var(--color-surface);color:var(--color-text)}.btn:hover{background:var(--color-bg)}.btn-primary{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.btn-primary:hover{background:#1e3a8a}.btn-sm{padding:.375rem .75rem;font-size:.8125rem}.form-group{margin-bottom:1rem}.form-label{display:block;font-size:.875rem;font-weight:500;margin-bottom:.375rem;color:var(--color-text)}.form-input{width:100%;padding:.625rem .875rem;border:1px solid var(--color-border);border-radius:6px;font-size:.9rem;font-family:inherit;outline:none;transition:border-color .15s;background:var(--color-surface)}.form-input:focus{border-color:var(--color-primary);box-shadow:0 0 0 3px #1e40af1a}.form-select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .75rem center;padding-right:2rem}.panel{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:1.5rem}.filters-bar{display:flex;flex-wrap:wrap;gap:.75rem;align-items:flex-end;margin-bottom:1.5rem}.filters-bar .form-group{margin-bottom:0}.filters-bar .form-input,.filters-bar .form-select{min-width:160px}.pagination{display:flex;align-items:center;justify-content:center;gap:.5rem;margin-top:1.5rem}.pagination button{padding:.375rem .75rem;border:1px solid var(--color-border);border-radius:6px;background:var(--color-surface);cursor:pointer;font-size:.875rem;transition:all .15s}.pagination button:hover:not(:disabled){background:var(--color-bg)}.pagination button:disabled{opacity:.4;cursor:not-allowed}.pagination button.active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.pagination .page-info{font-size:.875rem;color:var(--color-text-muted)}.tabs{display:flex;border-bottom:2px solid var(--color-border);margin-bottom:1.5rem}.tab-btn{padding:.625rem 1.25rem;background:none;border:none;border-bottom:2px solid transparent;margin-bottom:-2px;cursor:pointer;font-size:.875rem;font-weight:500;color:var(--color-text-muted);transition:all .15s}.tab-btn:hover{color:var(--color-text)}.tab-btn.active{color:var(--color-primary);border-bottom-color:var(--color-primary)}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--color-bg)}.login-box{background:var(--color-surface);border-radius:12px;padding:2.5rem;max-width:400px;width:90%;box-shadow:0 4px 24px #00000014;border:1px solid var(--color-border)}.login-box h1{font-size:1.375rem;text-align:center;color:var(--color-primary);margin-bottom:.375rem}.login-box .subtitle{text-align:center;color:var(--color-text-muted);font-size:.875rem;margin-bottom:1.5rem}.login-error{background:#fee2e2;color:#991b1b;padding:.5rem .75rem;border-radius:6px;font-size:.8125rem;margin-bottom:1rem}@media(max-width:768px){.sidebar{transform:translate(-100%);transition:transform .3s}.sidebar.open{transform:translate(0)}.main-content{margin-left:0;padding:1rem}.mobile-header{display:flex;align-items:center;gap:.75rem;margin-bottom:1rem}.mobile-menu-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid var(--color-border);border-radius:6px;background:var(--color-surface);cursor:pointer;font-size:1.25rem}.sidebar-overlay{position:fixed;inset:0;background:#0000004d;z-index:40}.stats-grid{grid-template-columns:repeat(2,1fr)}.filters-bar{flex-direction:column}.filters-bar .form-input,.filters-bar .form-select{min-width:auto;width:100%}}.empty-state{text-align:center;padding:3rem 1rem;color:var(--color-text-muted)}.empty-state .icon{font-size:2.5rem;margin-bottom:.75rem}.empty-state p{font-size:.9rem}