:root{--bg: #0f172a;--bg-soft: #1e293b;--panel: #ffffff;--panel-soft: #f1f5f9;--border: #e2e8f0;--text: #0f172a;--text-soft: #64748b;--primary: #4f46e5;--primary-hover: #4338ca;--danger: #dc2626;--success: #16a34a;--radius: 10px;--shadow: 0 1px 3px rgba(0, 0, 0, .08), 0 1px 2px rgba(0, 0, 0, .04)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Segoe UI,system-ui,-apple-system,sans-serif;background:var(--panel-soft);color:var(--text);font-size:14px}button{font-family:inherit;cursor:pointer;border:none;border-radius:8px;padding:9px 16px;font-size:14px;font-weight:500;background:var(--primary);color:#fff;transition:background .15s}button:hover{background:var(--primary-hover)}button:disabled{opacity:.5;cursor:not-allowed}button.secondary{background:var(--panel-soft);color:var(--text);border:1px solid var(--border)}button.secondary:hover{background:#e2e8f0}button.danger{background:var(--danger)}button.danger:hover{background:#b91c1c}button.small{padding:5px 10px;font-size:12px}input,select,textarea{font-family:inherit;font-size:14px;padding:9px 12px;border:1px solid var(--border);border-radius:8px;width:100%;background:#fff;color:var(--text)}input:focus,select:focus,textarea:focus{outline:2px solid var(--primary);border-color:transparent}label{display:block;font-weight:500;margin-bottom:5px;font-size:13px;color:var(--text-soft)}.field{margin-bottom:14px}.app{display:flex;min-height:100vh}.sidebar{width:230px;background:var(--bg);color:#cbd5e1;display:flex;flex-direction:column;padding:18px 0;flex-shrink:0}.sidebar .brand{font-size:18px;font-weight:700;color:#fff;padding:0 20px 18px}.sidebar nav{display:flex;flex-direction:column;gap:2px;flex:1}.sidebar nav a{color:#cbd5e1;text-decoration:none;padding:11px 20px;display:flex;align-items:center;gap:10px;font-weight:500;border-left:3px solid transparent}.sidebar nav a:hover{background:var(--bg-soft);color:#fff}.sidebar nav a.active{background:var(--bg-soft);color:#fff;border-left-color:var(--primary)}.sidebar .user-box{padding:14px 20px;border-top:1px solid #334155}.sidebar .user-box .name{color:#fff;font-weight:600}.sidebar .user-box .role{font-size:12px;color:#94a3b8}.badge-count{background:var(--danger);color:#fff;border-radius:10px;padding:1px 7px;font-size:11px;margin-left:auto}.main{flex:1;display:flex;flex-direction:column;min-width:0}.topbar{background:#fff;border-bottom:1px solid var(--border);padding:16px 28px;font-size:18px;font-weight:600;display:flex;justify-content:space-between;align-items:center}.content{padding:28px;flex:1;overflow:auto}.card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}.card-pad{padding:20px}.grid{display:grid;gap:18px}.stats-grid{grid-template-columns:repeat(auto-fit,minmax(180px,1fr))}.stat{background:#fff;border:1px solid var(--border);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}.stat .num{font-size:30px;font-weight:700;color:var(--primary)}.stat .lbl{color:var(--text-soft);margin-top:4px}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:11px 14px;border-bottom:1px solid var(--border)}th{font-size:12px;text-transform:uppercase;color:var(--text-soft);font-weight:600}tr:last-child td{border-bottom:none}.tag{display:inline-block;padding:2px 9px;border-radius:20px;font-size:12px;font-weight:500;background:var(--panel-soft);color:var(--text-soft)}.tag.green{background:#dcfce7;color:#166534}.tag.indigo{background:#e0e7ff;color:#3730a3}.tag.gray{background:#f1f5f9;color:#475569}.toolbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px;gap:12px;flex-wrap:wrap}.row{display:flex;gap:10px;align-items:center}.muted{color:var(--text-soft)}.error{color:var(--danger);font-size:13px}.center-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;background:var(--bg)}.login-card{width:360px;background:#fff;border-radius:14px;padding:32px;box-shadow:0 10px 40px #0000004d}.login-card h1{font-size:22px;margin-bottom:4px}.login-card p{color:var(--text-soft);margin-bottom:22px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a80;display:flex;align-items:center;justify-content:center;z-index:50;padding:20px}.modal{background:#fff;border-radius:12px;width:480px;max-width:100%;max-height:90vh;overflow:auto}.modal-head{padding:18px 22px;border-bottom:1px solid var(--border);font-weight:600;font-size:16px;display:flex;justify-content:space-between}.modal-body{padding:22px}.modal-foot{padding:16px 22px;border-top:1px solid var(--border);display:flex;justify-content:flex-end;gap:10px}.close-x{background:none;color:var(--text-soft);padding:0;font-size:20px}.close-x:hover{background:none;color:var(--text)}.chat{display:flex;height:calc(100vh - 130px);background:#fff;border:1px solid var(--border);border-radius:var(--radius);overflow:hidden}.chat-list{width:300px;border-right:1px solid var(--border);overflow-y:auto;flex-shrink:0}.chat-item{padding:13px 16px;border-bottom:1px solid var(--border);cursor:pointer}.chat-item:hover{background:var(--panel-soft)}.chat-item.active{background:#eef2ff}.chat-item .ci-top{display:flex;justify-content:space-between;align-items:center}.chat-item .ci-name{font-weight:600}.chat-item .ci-preview{color:var(--text-soft);font-size:13px;margin-top:3px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-main{flex:1;display:flex;flex-direction:column;min-width:0}.chat-header{padding:14px 18px;border-bottom:1px solid var(--border);font-weight:600;display:flex;justify-content:space-between;align-items:center}.chat-messages{flex:1;overflow-y:auto;padding:18px;display:flex;flex-direction:column;gap:10px;background:var(--panel-soft)}.bubble{max-width:70%;padding:9px 13px;border-radius:12px;font-size:14px;box-shadow:var(--shadow)}.bubble.in{background:#fff;align-self:flex-start;border-bottom-left-radius:3px}.bubble.out{background:var(--primary);color:#fff;align-self:flex-end;border-bottom-right-radius:3px}.bubble .meta{font-size:11px;opacity:.7;margin-top:4px}.bubble a{color:inherit}.chat-input{padding:14px;border-top:1px solid var(--border);display:flex;gap:10px;align-items:center}.chat-input input{flex:1}.chat-empty{flex:1;display:flex;align-items:center;justify-content:center;color:var(--text-soft)}.attach-chip{display:inline-flex;align-items:center;gap:6px;background:var(--panel-soft);padding:4px 10px;border-radius:6px;font-size:12px}.att-thumb{max-width:200px;border-radius:8px;display:block;margin-top:6px}