:root{--bg: #0b141a;--bg-2: #111b21;--panel: #182229;--panel-2: #202c33;--panel-3: #2a3942;--border: #2f3b43;--text: #e9edef;--text-dim: #8696a0;--accent: #00a884;--accent-2: #25d366;--in-bubble: #202c33;--out-bubble: #005c4b;--danger: #f15c6d;--shadow: 0 10px 40px rgba(0, 0, 0, .45);font-family:Segoe UI,system-ui,-apple-system,Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{background:radial-gradient(1200px 600px at 80% -10%,rgba(0,168,132,.12),transparent 60%),radial-gradient(900px 500px at -10% 110%,rgba(37,211,102,.1),transparent 60%),var(--bg);color:var(--text);overflow:hidden}button{font-family:inherit;cursor:pointer}input,textarea,select{font-family:inherit}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-thumb{background:#374248;border-radius:8px}::-webkit-scrollbar-track{background:transparent}.app-shell{display:grid;grid-template-columns:84px 340px 1fr;height:100vh;width:100vw}.rail{background:linear-gradient(180deg,var(--bg-2),#0d171e);border-right:1px solid var(--border);display:flex;flex-direction:column;align-items:center;padding:16px 0;gap:14px}.rail-logo{width:44px;height:44px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#04221b;font-weight:800;box-shadow:0 6px 18px #00a88466}.dept-pill{position:relative;width:52px;height:52px;border-radius:16px;border:none;display:grid;place-items:center;color:#fff;font-weight:700;font-size:18px;background:var(--panel-2);transition:transform .15s ease}.dept-pill:hover{transform:translateY(-2px)}.dept-pill .dept-dot{position:absolute;top:0;right:0;bottom:0;left:0;border-radius:16px;opacity:.18}.dept-pill.active{box-shadow:0 0 0 2px var(--bg-2),0 0 0 4px currentColor}.dept-pill .badge{position:absolute;top:-4px;right:-4px;min-width:18px;height:18px;padding:0 5px;border-radius:9px;background:var(--accent-2);color:#04221b;font-size:11px;font-weight:800;display:grid;place-items:center;border:2px solid var(--bg-2)}.rail-spacer{flex:1}.rail-btn{width:44px;height:44px;border-radius:12px;border:none;background:var(--panel-2);color:var(--text-dim);display:grid;place-items:center;transition:.15s}.rail-btn:hover{background:var(--panel-3);color:var(--text)}.list-panel{background:var(--bg-2);border-right:1px solid var(--border);display:flex;flex-direction:column;min-width:0}.list-header{padding:18px 18px 12px;border-bottom:1px solid var(--border)}.dept-title{display:flex;align-items:center;gap:10px}.dept-title h2{margin:0;font-size:19px}.dept-title .sub{color:var(--text-dim);font-size:12.5px;margin-top:2px}.search{margin-top:14px;display:flex;align-items:center;gap:8px;background:var(--panel);border-radius:10px;padding:9px 12px}.search input{background:transparent;border:none;outline:none;color:var(--text);width:100%;font-size:14px}.new-chat{margin-top:10px;width:100%;display:flex;align-items:center;justify-content:center;gap:8px;background:var(--accent);color:#04221b;border:none;padding:9px;border-radius:10px;font-weight:700;font-size:13.5px}.conv-scroll{overflow-y:auto;flex:1}.conv-item{display:flex;gap:12px;align-items:center;padding:12px 16px;cursor:pointer;border:none;width:100%;background:transparent;text-align:left;color:var(--text);border-bottom:1px solid rgba(255,255,255,.03)}.conv-item:hover{background:var(--panel)}.conv-item.active{background:var(--panel-2)}.avatar{width:44px;height:44px;border-radius:50%;flex-shrink:0;display:grid;place-items:center;font-weight:700;color:#fff}.conv-meta{min-width:0;flex:1}.conv-top{display:flex;justify-content:space-between;gap:8px}.conv-name{font-weight:600;font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-time{color:var(--text-dim);font-size:11.5px;flex-shrink:0}.conv-bottom{display:flex;justify-content:space-between;gap:8px;margin-top:2px}.conv-last{color:var(--text-dim);font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.conv-badge{background:var(--accent-2);color:#04221b;font-weight:800;min-width:20px;height:20px;padding:0 6px;border-radius:10px;font-size:11.5px;display:grid;place-items:center}.chat-panel{display:flex;flex-direction:column;min-width:0;background:linear-gradient(#0b141af0,#0b141af0),repeating-linear-gradient(45deg,#0e1a21 0,#0e1a21 12px,#0c161c 12px,#0c161c 24px)}.chat-header{display:flex;align-items:center;gap:12px;padding:12px 20px;background:var(--panel-2);border-bottom:1px solid var(--border)}.chat-header .conv-name{font-size:15.5px}.chat-header .sub{color:var(--text-dim);font-size:12px}.messages{flex:1;overflow-y:auto;padding:24px 8% 12px;display:flex;flex-direction:column;gap:4px}.bubble{max-width:65%;padding:8px 11px 6px;border-radius:10px;font-size:14.2px;line-height:1.4;position:relative;word-wrap:break-word;box-shadow:0 1px 1px #0003}.bubble.in{align-self:flex-start;background:var(--in-bubble);border-top-left-radius:2px}.bubble.out{align-self:flex-end;background:var(--out-bubble);border-top-right-radius:2px}.bubble .ts{font-size:10.5px;color:var(--text-dim);margin-top:3px;text-align:right;display:flex;gap:4px;justify-content:flex-end;align-items:center}.bubble.out .ts{color:#e9edef99}.bubble .author{font-size:11px;color:var(--accent-2);font-weight:700;margin-bottom:2px}.status-failed{color:var(--danger)!important}.composer{display:flex;align-items:center;gap:12px;padding:12px 20px;background:var(--panel-2);border-top:1px solid var(--border)}.composer textarea{flex:1;resize:none;max-height:120px;min-height:24px;background:var(--panel);border:none;outline:none;color:var(--text);border-radius:12px;padding:11px 14px;font-size:14px;line-height:1.4}.send-btn{width:46px;height:46px;border-radius:50%;border:none;background:var(--accent);color:#04221b;display:grid;place-items:center;flex-shrink:0}.send-btn:disabled{opacity:.4}.empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;color:var(--text-dim);gap:14px;text-align:center;padding:40px}.empty .ring{width:120px;height:120px;border-radius:50%;display:grid;place-items:center;background:radial-gradient(circle,rgba(0,168,132,.18),transparent 70%)}.login-wrap{height:100vh;display:grid;place-items:center;padding:20px}.login-card{width:100%;max-width:400px;background:var(--panel);border:1px solid var(--border);border-radius:20px;padding:36px 32px;box-shadow:var(--shadow)}.brand{display:flex;align-items:center;gap:12px;margin-bottom:6px}.brand .mark{width:46px;height:46px;border-radius:14px;display:grid;place-items:center;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#04221b;font-weight:800}.brand h1{font-size:20px;margin:0}.login-card p.lead{color:var(--text-dim);margin:4px 0 24px;font-size:13.5px}.field{margin-bottom:14px}.field label{display:block;font-size:12.5px;color:var(--text-dim);margin-bottom:6px}.field input,.field textarea,.field select{width:100%;background:var(--panel-2);border:1px solid var(--border);border-radius:10px;padding:11px 13px;color:var(--text);font-size:14px;outline:none}.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--accent)}.btn-primary{width:100%;background:var(--accent);color:#04221b;border:none;padding:12px;border-radius:10px;font-weight:800;font-size:14.5px;margin-top:6px}.btn-primary:disabled{opacity:.5}.error-banner{background:#f15c6d1f;border:1px solid rgba(241,92,109,.4);color:#ffb3bc;padding:10px 12px;border-radius:10px;font-size:13px;margin-bottom:14px}.modal-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0009;display:grid;place-items:center;z-index:50;padding:20px}.modal{width:100%;max-width:560px;max-height:88vh;overflow-y:auto;background:var(--panel);border:1px solid var(--border);border-radius:18px;box-shadow:var(--shadow)}.modal-head{display:flex;align-items:center;justify-content:space-between;padding:18px 22px;border-bottom:1px solid var(--border);position:sticky;top:0;background:var(--panel)}.modal-head 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14px;border-radius:10px;font-weight:600;font-size:13.5px}.btn-ghost:hover{background:var(--panel-3)}.list-row{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 0;border-bottom:1px solid var(--border)}.list-row:last-child{border-bottom:none}.chips{display:flex;flex-wrap:wrap;gap:6px}.chip{font-size:11.5px;padding:3px 9px;border-radius:999px;background:var(--panel-2);border:1px solid var(--border);color:var(--text-dim);cursor:pointer}.chip.on{background:#00a88429;color:var(--accent-2);border-color:#00a88466}.toast-stack{position:fixed;top:18px;right:18px;z-index:100;display:flex;flex-direction:column;gap:10px}.toast{background:var(--panel-2);border:1px solid var(--border);color:var(--text);padding:12px 16px;border-radius:12px;box-shadow:var(--shadow);font-size:13.5px;max-width:320px}.toast.err{border-color:#f15c6d80}.spin{animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}