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var(--border-subtle)}.msg-bubble-wrapper{display:flex;margin-bottom:.15rem}.msg-bubble-wrapper.sent{justify-content:flex-end}.msg-bubble-wrapper.received{justify-content:flex-start}.msg-bubble{max-width:70%;padding:.6rem .85rem;border-radius:var(--radius-md);position:relative;word-break:break-word}.msg-bubble.sent{background:var(--brand-primary-dark);color:#fff;border-bottom-right-radius:4px}.msg-bubble.received{background:var(--bg-tertiary);color:var(--text-primary);border-bottom-left-radius:4px;border:1px solid var(--border-subtle)}.msg-bubble.failed{opacity:.6;border:1px solid rgba(239,68,68,.3)}.msg-bubble.ai{border-left:2px solid var(--brand-accent)}.msg-ai-indicator{display:inline-flex;align-items:center;gap:.25rem;padding:.1rem .4rem;border-radius:var(--radius-full);background:#06b6d426;color:var(--brand-accent-light);font-size:.6rem;font-weight:700;margin-bottom:.35rem}.msg-text{font-size:.88rem;line-height:1.45;margin:0;white-space:pre-wrap}.msg-meta{display:flex;align-items:center;justify-content:flex-end;gap:.3rem;margin-top:.25rem}.msg-time{font-size:.65rem;opacity:.6}.msg-status{color:#ffffff80}.msg-status.read{color:#34d399}.msg-status.delivered{color:#ffffffb3}.msg-status.failed{color:#f87171}.msg-status-sending{width:12px;height:12px;border:1.5px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}.chat-input-bar{display:flex;align-items:flex-end;gap:.65rem;padding:.85rem 1.25rem;border-top:1px solid var(--border-subtle);background:var(--bg-secondary);flex-shrink:0}.chat-input-field{flex:1;min-height:42px;max-height:120px;padding:.55rem 1rem;background:var(--bg-input);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);color:var(--text-primary);font-size:.9rem;font-family:var(--font-family);outline:none;resize:none;line-height:1.4;transition:border-color var(--transition-base)}.chat-input-field::placeholder{color:var(--text-muted)}.chat-input-field:focus{border-color:var(--border-focus)}.chat-send-btn{width:42px;height:42px;border:none;border-radius:var(--radius-full);background:var(--gradient-brand);color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:all var(--transition-base)}.chat-send-btn:hover:not(:disabled){box-shadow:var(--shadow-glow);transform:scale(1.05)}.chat-send-btn:disabled{opacity:.4;cursor:not-allowed}.chat-empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:1rem;padding:2rem;text-align:center}.chat-empty-icon{width:80px;height:80px;border-radius:var(--radius-xl);background:var(--gradient-brand);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:var(--shadow-glow);animation:pulse-glow 3s ease-in-out infinite}.chat-empty-title{font-size:1.5rem;font-weight:800;background:var(--gradient-brand);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.chat-empty-text{color:var(--text-muted);font-size:.9rem;max-width:300px}.chat-empty-features{display:flex;flex-direction:column;gap:.5rem;margin-top:1rem}.chat-empty-feature{display:flex;align-items:center;gap:.5rem;font-size:.8rem;color:var(--text-secondary)}.chat-feature-dot{width:8px;height:8px;border-radius:50%;background:var(--brand-primary);opacity:.5}.chat-feature-dot.active{opacity:1;box-shadow:0 0 8px #6366f180}@media (max-width: 640px){.login-card{padding:2rem 1.5rem}.login-title{font-size:1.5rem}.hub-greeting{font-size:1.25rem}.hub-grid{grid-template-columns:1fr}.service-card{padding:1.5rem}.chatbot-sidebar{width:100%;min-width:100%}.chatbot-sidebar.hide-mobile,.chatbot-main.hide-mobile{display:none}.chat-header-back{display:flex}.msg-bubble{max-width:85%}}@media (min-width: 641px) and (max-width: 900px){.chatbot-sidebar{width:300px;min-width:300px}}