*{margin:0;padding:0;box-sizing:border-box}: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{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);min-height:100vh}.container{max-width:1400px;margin:0 auto;padding:0 20px}.layout{display:flex;min-height:100vh}.sidebar{width:250px;background:var(--card-bg);border-right:1px solid var(--border);padding:20px 0;position:fixed;height:100vh;overflow-y:auto}.sidebar-header{padding:0 20px 20px;border-bottom:1px solid var(--border);margin-bottom:20px}.sidebar-header h1{font-size:20px;color:var(--primary)}.sidebar-nav{list-style:none}.sidebar-nav a{display:flex;align-items:center;gap:12px;padding:12px 20px;color:var(--text-muted);text-decoration:none;transition:all .2s}.sidebar-nav a:hover{background:var(--bg);color:var(--text)}.sidebar-nav a.active{background:#eff6ff;color:var(--primary);border-right:3px solid var(--primary)}.main-content{flex:1 1;margin-left:250px;padding:30px}.page-header{margin-bottom:30px}.page-header h2{font-size:28px;margin-bottom:8px}.page-header p{color:var(--text-muted)}.card{background:var(--card-bg);border-radius:12px;padding:24px;box-shadow:0 1px 3px rgba(0,0,0,.05);margin-bottom:20px}.card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.card-title{font-size:18px;font-weight:600}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));grid-gap:20px;gap:20px;margin-bottom:30px}.stat-card{background:var(--card-bg);border-radius:12px;padding:24px;box-shadow:0 1px 3px rgba(0,0,0,.05)}.stat-value{font-size:32px;font-weight:700;color:var(--primary)}.stat-label{color:var(--text-muted);margin-top:4px}.table-container{overflow-x:auto}table{width:100%;border-collapse:collapse}th{text-align:left;background:var(--bg);font-weight:600;font-size:13px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px}td,th{padding:12px}td{border-top:1px solid var(--border);font-size:14px}tr:hover{background:#fafafa}.badge{display:inline-block;padding:4px 10px;border-radius:20px;font-size:12px;font-weight:500}.badge-success{background:#d1fae5;color:#065f46}.badge-warning{background:#fef3c7;color:#92400e}.badge-error{background:#fee2e2;color:#991b1b}.badge-info{background:#dbeafe;color:#1e40af}.btn{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;border:none;transition:all .2s}.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{display:flex;gap:12px;margin-bottom:20px;flex-wrap:wrap}.filter-bar input,.filter-bar select{padding:8px 12px;border:1px solid var(--border);border-radius:6px;font-size:14px;background:#fff}.loading{padding:40px}.empty-state,.loading{text-align:center;color:var(--text-muted)}.empty-state{padding:60px 20px}.empty-state svg{width:64px;height:64px;margin-bottom:16px;opacity:.5}.message-content{max-width:500px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conversation-messages{max-height:400px;overflow-y:auto;padding:16px;background:var(--bg);border-radius:8px}.msg{max-width:80%;padding:10px 14px;border-radius:12px;margin-bottom:12px}.msg-user{background:var(--primary);color:#fff;margin-left:auto;border-bottom-right-radius:4px}.msg-assistant{background:#fff;border:1px solid var(--border);border-bottom-left-radius:4px}.msg-time{font-size:11px;opacity:.7;margin-top:4px}@media (max-width:768px){.sidebar{display:none}.main-content{margin-left:0}.stats-grid{grid-template-columns:1fr}}