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.25rem;display:flex;align-items:center;gap:.75rem}.chat-subtitle{color:var(--text-secondary, #5E6266);font-family:Nunito Sans,sans-serif;font-weight:var(--font-weight-medium, 500);font-size:.875rem;margin:0;line-height:1.4}@media (max-width: 1024px){.chat-container{grid-template-columns:240px 1fr}}@media (max-width: 768px){.chat-container{grid-template-columns:1fr;grid-template-rows:auto 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#ffffff4d}.action-button.attachment{color:var(--blue-600)}.action-button.attachment:hover{background:rgba(19,106,213,.1);color:var(--blue-700)}.action-button.voice{color:var(--SG-600)}.action-button.voice:hover{background:rgba(15,185,136,.1);color:var(--SG-700)}.action-button.emoji{color:var(--amber-600)}.action-button.emoji:hover{background:rgba(245,158,11,.1);color:var(--amber-700)}-webkit-overflow-scrolling:touch;scrollbar-gutter:stable}.messages-container::-webkit-scrollbar{width:10px;background:transparent}.messages-container::-webkit-scrollbar-track{background:rgba(0,0,0,.02);border-radius:8px;margin:8px 0}.messages-container::-webkit-scrollbar-thumb{background:linear-gradient(180deg,var(--grey-300, #A3A7AB),var(--grey-400, #91969A));border-radius:8px;border:2px solid transparent;background-clip:content-box;transition:all .2s ease}.messages-container::-webkit-scrollbar-thumb:hover{background:linear-gradient(180deg,var(--grey-400, #91969A),var(--grey-500, 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.message-text{color:var(--blue-800, #0A3A75)}.message-bubble.agent .message-text{color:var(--grey-800, #333537)}.message-time{font-family:Nunito Sans,sans-serif;font-weight:var(--font-weight-regular, 400);font-size:.75rem;margin-top:.5rem}.message-bubble.user .message-time{color:var(--blue-600, #1160C2);opacity:.8}.message-bubble.agent .message-time{color:var(--grey-600, #5E6266)}.chat-empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:3rem 1.5rem;position:relative}.innovative-brain-container{position:relative;width:8rem;height:8rem;margin-bottom:2rem;display:flex;align-items:center;justify-content:center}.brain-core{position:relative;width:4rem;height:4rem;display:flex;align-items:center;justify-content:center;z-index:2}.brain-icon{width:4rem;height:4rem;color:var(--blue-500, #136AD5);animation:brainPulse 3s ease-in-out 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