:root{--primary:#2563eb;--primary-hover:#1d4ed8;--bg:#f8fafc;--card-bg:#fff;--text:#1e293b;--text-muted:#64748b;--border:#e2e8f0;--success:#16a34a;--danger:#dc2626;--warning:#d97706;color:var(--text);background:var(--bg);font-family:system-ui,-apple-system,sans-serif;font-size:14px;line-height:1.5}*{box-sizing:border-box;margin:0;padding:0}body{margin:0}.layout{min-height:100vh;display:flex}.sidebar{background:var(--text);color:#fff;flex-direction:column;width:240px;padding:24px 0;display:flex;position:fixed;top:0;bottom:0}.sidebar-logo{border-bottom:1px solid #ffffff1a;padding:0 24px 24px;font-size:20px;font-weight:700}.sidebar-nav{flex-direction:column;flex:1;gap:2px;padding:16px 12px;display:flex}.sidebar-link{color:#ffffffb3;border-radius:6px;align-items:center;gap:10px;padding:10px 12px;font-size:14px;text-decoration:none;transition:all .15s;display:flex}.sidebar-link:hover,.sidebar-link.active{color:#fff;background:#ffffff1a}.sidebar-footer{border-top:1px solid #ffffff1a;padding:16px 24px}.sidebar-footer button{color:#ffffff80;cursor:pointer;background:0 0;border:none;font-size:13px}.sidebar-footer button:hover{color:#fff}.main-content{flex:1;margin-left:240px;padding:32px}.page-header{margin-bottom:24px}.page-header h1{font-size:24px;font-weight:600}.page-header p{color:var(--text-muted);margin-top:4px}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-bottom:24px;display:grid}.stat-card{background:var(--card-bg);border:1px solid var(--border);border-radius:8px;padding:20px}.stat-card .label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;font-size:13px}.stat-card .value{margin-top:4px;font-size:32px;font-weight:700}.card{background:var(--card-bg);border:1px solid var(--border);border-radius:8px;margin-bottom:16px;padding:20px}.table-wrap{overflow-x:auto}table{border-collapse:collapse;width:100%}th{text-align:left;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);border-bottom:2px solid var(--border);padding:10px 12px;font-size:12px}td{border-bottom:1px solid var(--border);padding:12px}tr:hover{background:#f1f5f9}.badge{border-radius:12px;padding:2px 8px;font-size:12px;font-weight:500;display:inline-block}.badge-confirmed{color:#166534;background:#dcfce7}.badge-cancelled{color:#991b1b;background:#fee2e2}.badge-completed{color:#1e40af;background:#dbeafe}.btn{border:1px solid var(--border);background:var(--card-bg);cursor:pointer;color:var(--text);border-radius:6px;align-items:center;gap:6px;padding:8px 16px;font-size:14px;transition:all .15s;display:inline-flex}.btn:hover{background:#f1f5f9}.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary:hover{background:var(--primary-hover)}.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn-danger:hover{opacity:.9}.btn-sm{padding:4px 10px;font-size:13px}.form-group{margin-bottom:16px}.form-group label{color:var(--text-muted);margin-bottom:4px;font-size:13px;font-weight:500;display:block}.form-group input,.form-group textarea,.form-group select{border:1px solid var(--border);border-radius:6px;width:100%;padding:8px 12px;font-family:inherit;font-size:14px}.form-group textarea{resize:vertical;min-height:80px}.form-row{gap:16px;display:flex}.form-row .form-group{flex:1}.login-page{background:var(--bg);justify-content:center;align-items:center;min-height:100vh;display:flex}.login-card{background:var(--card-bg);border:1px solid var(--border);text-align:center;border-radius:12px;width:380px;padding:40px}.login-card h1{margin-bottom:8px;font-size:24px}.login-card p{color:var(--text-muted);margin-bottom:24px}.conversation-list{flex-direction:column;gap:8px;display:flex}.conversation-item{background:var(--card-bg);border:1px solid var(--border);cursor:pointer;border-radius:8px;padding:16px}.conversation-item:hover{border-color:var(--primary)}.conversation-header{justify-content:space-between;align-items:center;margin-bottom:8px;display:flex}.conversation-name{font-weight:600}.conversation-time{color:var(--text-muted);font-size:12px}.conversation-preview{color:var(--text-muted);white-space:nowrap;text-overflow:ellipsis;font-size:13px;overflow:hidden}.messages-panel{flex-direction:column;gap:8px;max-height:400px;padding:16px;display:flex;overflow-y:auto}.message{border-radius:12px;max-width:80%;padding:8px 12px;font-size:14px}.message-user{background:#dcfce7;border-bottom-right-radius:4px;align-self:flex-end}.message-assistant{background:#f1f5f9;border-bottom-left-radius:4px;align-self:flex-start}.action-bar{justify-content:space-between;align-items:center;margin-bottom:16px;display:flex}.modal-overlay{z-index:100;background:#00000080;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal{background:var(--card-bg);border-radius:12px;width:480px;max-width:90vw;max-height:90vh;padding:24px;overflow-y:auto}.modal h2{margin-bottom:16px;font-size:18px}.modal-actions{justify-content:flex-end;gap:8px;margin-top:20px;display:flex}