*{box-sizing:border-box;margin:0;padding:0}:root{--primary:#3b82f6;--primary-dark:#2563eb;--bg:#f5f5f5;--card-bg:#fff;--text:#1f2937;--text-muted:#6b7280;--border:#e5e7eb;--success:#10b981;--warning:#f59e0b;--error:#ef4444}body{background:var(--bg);color:var(--text);min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.container{max-width:1400px;margin:0 auto;padding:0 20px}.layout{min-height:100vh;display:flex}.sidebar{background:var(--card-bg);border-right:1px solid var(--border);width:250px;height:100vh;padding:20px 0;position:fixed;overflow-y:auto}.sidebar-header{border-bottom:1px solid var(--border);margin-bottom:20px;padding:0 20px 20px}.sidebar-header h1{color:var(--primary);font-size:20px}.sidebar-nav{list-style:none}.sidebar-nav a{color:var(--text-muted);align-items:center;gap:12px;padding:12px 20px;text-decoration:none;transition:all .2s;display:flex}.sidebar-nav a:hover{background:var(--bg);color:var(--text)}.sidebar-nav a.active{color:var(--primary);border-right:3px solid var(--primary);background:#eff6ff}.main-content{flex:1;margin-left:250px;padding:30px}.page-header{margin-bottom:30px}.page-header h2{margin-bottom:8px;font-size:28px}.page-header p{color:var(--text-muted)}.card{background:var(--card-bg);border-radius:12px;margin-bottom:20px;padding:24px;box-shadow:0 1px 3px #0000000d}.card-header{justify-content:space-between;align-items:center;margin-bottom:20px;display:flex}.card-title{font-size:18px;font-weight:600}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px;margin-bottom:30px;display:grid}.stat-card{background:var(--card-bg);border-radius:12px;padding:24px;box-shadow:0 1px 3px #0000000d}.stat-value{color:var(--primary);font-size:32px;font-weight:700}.stat-label{color:var(--text-muted);margin-top:4px}.table-container{overflow-x:auto}table{border-collapse:collapse;width:100%}th{text-align:left;background:var(--bg);color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;padding:12px;font-size:13px;font-weight:600}td{border-top:1px solid var(--border);padding:12px;font-size:14px}tr:hover{background:#fafafa}.badge{border-radius:20px;padding:4px 10px;font-size:12px;font-weight:500;display:inline-block}.badge-success{color:#065f46;background:#d1fae5}.badge-warning{color:#92400e;background:#fef3c7}.badge-error{color:#991b1b;background:#fee2e2}.badge-info{color:#1e40af;background:#dbeafe}.btn{cursor:pointer;border:none;border-radius:8px;align-items:center;gap:8px;padding:10px 16px;font-size:14px;font-weight:500;transition:all .2s;display:inline-flex}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-dark)}.btn-secondary{background:var(--bg);color:var(--text);border:1px solid var(--border)}.btn-secondary:hover{background:var(--border)}.filter-bar{flex-wrap:wrap;gap:12px;margin-bottom:20px;display:flex}.filter-bar select,.filter-bar input{border:1px solid var(--border);background:#fff;border-radius:6px;padding:8px 12px;font-size:14px}.loading{text-align:center;color:var(--text-muted);padding:40px}.empty-state{text-align:center;color:var(--text-muted);padding:60px 20px}.empty-state svg{opacity:.5;width:64px;height:64px;margin-bottom:16px}.message-content{text-overflow:ellipsis;white-space:nowrap;max-width:500px;overflow:hidden}.conversation-messages{background:var(--bg);border-radius:8px;max-height:400px;padding:16px;overflow-y:auto}.msg{border-radius:12px;max-width:80%;margin-bottom:12px;padding:10px 14px}.msg-user{background:var(--primary);color:#fff;border-bottom-right-radius:4px;margin-left:auto}.msg-assistant{border:1px solid var(--border);background:#fff;border-bottom-left-radius:4px}.msg-time{opacity:.7;margin-top:4px;font-size:11px}@media (max-width:768px){.sidebar{display:none}.main-content{margin-left:0}.stats-grid{grid-template-columns:1fr}}