:root{--bg:#f0f2f5;--panel:#fff;--border:#e5e7eb;--text:#111b21;--text-muted:#667781;--brand:#075e54;--brand-dark:#054c44;--brand-light:#128c7e;--bubble-out:#d9fdd3;--bubble-in:#fff;--chat-bg:#efeae2;--hover:#f5f6f6;--selected:#f0f2f5;--danger:#ef4444;--success:#22c55e}*{box-sizing:border-box}html,body,#root{height:100%;color:var(--text);background:var(--bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;font-size:14px}button{cursor:pointer;font-family:inherit}input,textarea{font-family:inherit;font-size:inherit}a{color:var(--brand-light);text-decoration:none}.login-page{background:linear-gradient(135deg,#075e54 0%,#128c7e 100%);justify-content:center;align-items:center;min-height:100vh;padding:16px;display:flex}.login-card{background:var(--panel);border-radius:12px;width:100%;max-width:380px;padding:32px 28px;box-shadow:0 20px 50px #0000002e}.login-card h1{color:var(--brand);margin:0 0 6px;font-size:20px}.login-card p.subtitle{color:var(--text-muted);margin:0 0 24px;font-size:13px}.login-card label{color:var(--text-muted);margin-bottom:6px;font-size:12px;font-weight:500;display:block}.login-card input{border:1px solid var(--border);border-radius:8px;outline:none;width:100%;margin-bottom:16px;padding:10px 12px;transition:border-color .15s}.login-card input:focus{border-color:var(--brand-light)}.login-card button{background:var(--brand);color:#fff;border:0;border-radius:8px;width:100%;padding:11px;font-size:14px;font-weight:600;transition:background .15s}.login-card button:hover:not(:disabled){background:var(--brand-dark)}.login-card button:disabled{opacity:.6;cursor:not-allowed}.login-error{color:#991b1b;background:#fee2e2;border-radius:6px;margin-bottom:14px;padding:8px 10px;font-size:13px}.app{height:100vh;display:flex;overflow:hidden}.sidebar{border-right:1px solid var(--border);background:var(--panel);flex-direction:column;flex-shrink:0;width:360px;display:flex}.sidebar-header{background:var(--brand);color:#fff;justify-content:space-between;align-items:center;padding:14px 16px;display:flex}.sidebar-header .brand{letter-spacing:.2px;font-size:15px;font-weight:600}.sidebar-header .user-pill{opacity:.9;align-items:center;gap:8px;font-size:12px;display:flex}.sidebar-header button.logout{color:#fff;background:#ffffff26;border:0;border-radius:6px;padding:6px 10px;font-size:12px;font-weight:500}.sidebar-header button.logout:hover{background:#ffffff40}.sidebar-search{border-bottom:1px solid var(--border);background:var(--panel);padding:8px 12px}.sidebar-search input{background:var(--bg);border:0;border-radius:8px;outline:none;width:100%;padding:8px 12px}.conversation-list{flex:1;overflow-y:auto}.conversation-item{border-bottom:1px solid var(--border);cursor:pointer;gap:12px;padding:12px 16px;transition:background .1s;display:flex}.conversation-item:hover{background:var(--hover)}.conversation-item.active{background:var(--selected)}.avatar{background:var(--brand-light);color:#fff;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:44px;height:44px;font-size:16px;font-weight:600;display:flex}.conv-body{flex:1;min-width:0}.conv-row{justify-content:space-between;align-items:center;margin-bottom:4px;display:flex}.conv-name{color:var(--text);text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:600;overflow:hidden}.conv-time{color:var(--text-muted);flex-shrink:0;margin-left:8px;font-size:11px}.conv-preview{justify-content:space-between;align-items:center;gap:8px;display:flex}.conv-preview-text{color:var(--text-muted);text-overflow:ellipsis;white-space:nowrap;flex:1;font-size:13px;overflow:hidden}.conv-badges{flex-shrink:0;gap:4px;display:flex}.badge{letter-spacing:.3px;text-transform:uppercase;border-radius:10px;padding:2px 6px;font-size:10px;font-weight:600}.badge.ai-on{color:#1e40af;background:#dbeafe}.badge.ai-off{color:#991b1b;background:#fee2e2}.badge.window-out{color:#92400e;background:#fef3c7}.empty{text-align:center;color:var(--text-muted);padding:32px 24px;font-size:13px}.main{background:var(--chat-bg);flex-direction:column;flex:1;min-width:0;display:flex}.main-empty{color:var(--text-muted);text-align:center;flex-direction:column;flex:1;justify-content:center;align-items:center;padding:24px;display:flex}.main-empty h2{color:var(--text);margin-bottom:8px;font-size:18px}.chat-header{border-bottom:1px solid var(--border);background:#f0f2f5;flex-shrink:0;align-items:center;gap:12px;padding:10px 16px;display:flex}.chat-header .meta{flex:1}.chat-header .name{font-size:15px;font-weight:600}.chat-header .phone{color:var(--text-muted);font-size:12px}.chat-header .controls{align-items:center;gap:12px;display:flex}.toggle-row{color:var(--text-muted);align-items:center;gap:8px;font-size:12px;display:flex}.toggle{width:38px;height:22px;display:inline-block;position:relative}.toggle input{opacity:0;width:0;height:0}.toggle .slider{background:#cbd5e1;border-radius:999px;transition:all .2s;position:absolute;inset:0}.toggle .slider:before{content:"";background:#fff;border-radius:50%;width:16px;height:16px;transition:all .2s;position:absolute;top:3px;left:3px;box-shadow:0 1px 3px #0003}.toggle input:checked+.slider{background:var(--brand-light)}.toggle input:checked+.slider:before{transform:translate(16px)}.messages{flex-direction:column;flex:1;gap:6px;padding:16px 24px;display:flex;overflow-y:auto}.bubble{word-wrap:break-word;border-radius:8px;max-width:70%;padding:8px 12px;font-size:14px;line-height:1.4;position:relative;box-shadow:0 1px 1px #0000000f}.bubble.in{background:var(--bubble-in);border-top-left-radius:0;align-self:flex-start}.bubble.out{background:var(--bubble-out);border-top-right-radius:0;align-self:flex-end}.bubble-tag{text-transform:uppercase;letter-spacing:.4px;color:var(--brand-light);background:#128c7e14;border-radius:4px;margin-bottom:4px;padding:2px 6px;font-size:10px;font-weight:700;display:inline-block}.bubble-meta{color:var(--text-muted);justify-content:flex-end;align-items:center;gap:6px;margin-top:4px;font-size:10px;display:flex}.bubble-status{text-transform:lowercase}.bubble-status.read{color:#4fc3f7}.bubble-status.delivered,.bubble-status.sent{color:var(--text-muted)}.bubble-status.failed{color:var(--danger)}.composer{border-top:1px solid var(--border);background:#f0f2f5;flex-shrink:0;align-items:flex-end;gap:10px;padding:10px 14px;display:flex}.composer textarea{resize:none;background:#fff;border:0;border-radius:8px;outline:none;flex:1;min-height:40px;max-height:120px;padding:10px 12px;font-size:14px;line-height:1.4}.composer button.send{background:var(--brand);color:#fff;border:0;border-radius:8px;height:40px;padding:0 18px;font-weight:600}.composer button.send:hover:not(:disabled){background:var(--brand-dark)}.composer button.send:disabled{opacity:.5;cursor:not-allowed}.composer .hint{color:var(--text-muted);margin-top:6px;font-size:11px}.window-banner{color:#92400e;text-align:center;background:#fef3c7;border-top:1px solid #fde68a;padding:8px 14px;font-size:12px}.conversation-list::-webkit-scrollbar{width:6px}.messages::-webkit-scrollbar{width:6px}.conversation-list::-webkit-scrollbar-thumb{background:#00000026;border-radius:3px}.messages::-webkit-scrollbar-thumb{background:#00000026;border-radius:3px}