:root{--primary: #3b82f6;--primary-dark: #2563eb;--primary-light: #dbeafe;--danger: #ef4444;--danger-light: #fee2e2;--success: #22c55e;--success-light: #dcfce7;--warning: #f59e0b;--warning-light: #fef3c7;--text: #1e293b;--text-sec: #64748b;--text-muted: #94a3b8;--text-inverse: #f8fafc;--bg: #f1f5f9;--bg-white: #ffffff;--sidebar-bg: #1e293b;--sidebar-hover: #334155;--sidebar-active: #3b82f6;--border: #e2e8f0;--border-light: #f1f5f9;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px rgba(0, 0, 0, .07);--shadow-lg: 0 10px 15px rgba(0, 0, 0, .1);--radius: 8px;--radius-sm: 6px;--radius-xs: 4px;--sidebar-width: 220px;--header-height: 56px}*{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px;line-height:1.6;color:var(--text);background:var(--bg)}a{color:var(--primary);text-decoration:none}button{font-family:inherit;cursor:pointer;border:none;border-radius:var(--radius-xs);padding:6px 14px;font-size:13px;transition:all .15s ease}button:hover{opacity:.85}button.btn-primary{background:var(--primary);color:#fff}button.btn-danger{background:var(--danger);color:#fff}button.btn-ghost{background:transparent;color:var(--text-sec);border:1px solid var(--border)}button.btn-sm{padding:4px 10px;font-size:12px}input,select,textarea{font-family:inherit;font-size:13px;padding:6px 10px;border:1px solid var(--border);border-radius:var(--radius-xs);outline:none;transition:border-color .15s ease}input:focus,select:focus,textarea:focus{border-color:var(--primary)}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:8px 12px;border-bottom:1px solid var(--border-light);font-size:13px}th{font-weight:600;color:var(--text-sec);background:var(--bg-white)}.card{background:var(--bg-white);border-radius:var(--radius);box-shadow:var(--shadow-sm);padding:16px}.card-title{font-size:15px;font-weight:600;margin-bottom:12px}.tag{display:inline-block;padding:2px 8px;border-radius:4px;font-size:12px;font-weight:500}.tag-success{background:var(--success-light);color:var(--success)}.tag-danger{background:var(--danger-light);color:var(--danger)}.tag-warning{background:var(--warning-light);color:var(--warning)}.tag-info{background:var(--primary-light);color:var(--primary)}.toast-container{position:fixed;top:20px;right:20px;z-index:9999;display:flex;flex-direction:column;gap:8px}.toast{padding:10px 16px;border-radius:var(--radius-sm);font-size:13px;color:#fff;opacity:0;transform:translate(20px);transition:all .3s ease}.toast-show{opacity:1;transform:translate(0)}.toast-info{background:var(--primary)}.toast-success{background:var(--success)}.toast-error{background:var(--danger)}.pagination{display:flex;align-items:center;gap:8px;justify-content:flex-end;margin-top:12px}.empty-state{text-align:center;padding:40px;color:var(--text-muted)}