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var(--transition-fast)!important}.send-button:hover{background:var(--color-primary-hover)!important;border-color:var(--color-primary-hover)!important;transform:translateY(-1px);box-shadow:var(--shadow-md)!important}.send-button:disabled{opacity:.5!important;transform:none!important;cursor:not-allowed!important}.empty-chat-state{display:flex;align-items:center;justify-content:center;height:100%;flex-direction:column;gap:20px;color:var(--color-gray-400);padding:40px;text-align:center}.empty-chat-icon{width:64px;height:64px;background:var(--color-gray-100);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:28px;color:var(--color-gray-400);margin-bottom:16px}.empty-chat-title{font-size:18px;font-weight:600;color:var(--color-gray-700);margin:0 0 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scale(1)}}.message-bubble{animation:messageSlideIn .2s ease-out}@keyframes typingDots{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-10px)}}.typing-indicator{display:flex;gap:4px;padding:12px 16px;background:var(--color-gray-100);border-radius:var(--radius-lg);width:fit-content;margin-bottom:12px}.typing-dot{width:6px;height:6px;background:var(--color-gray-400);border-radius:50%;animation:typingDots 1.4s infinite}.typing-dot:nth-child(2){animation-delay:.2s}.typing-dot:nth-child(3){animation-delay:.4s}.chat-messages-area::-webkit-scrollbar{width:6px}.chat-messages-area::-webkit-scrollbar-track{background:transparent;border-radius:3px}.chat-messages-area::-webkit-scrollbar-thumb{background:var(--color-gray-300);border-radius:3px;transition:background var(--transition-fast)}.chat-messages-area::-webkit-scrollbar-thumb:hover{background:var(--color-gray-400)}@media (max-width: 768px){.chat-container{flex-direction:column;gap:12px;height:calc(100vh - 160px)}.chat-list-panel{width:100%;height:200px}.message-bubble{max-width:85%}.chat-list-header,.chat-header,.message-input-area,.chat-messages-area{padding:16px}.chat-item{padding:12px 16px}}@media (max-width: 480px){.message-bubble{max-width:90%;padding:10px 14px}.chat-list-header,.chat-header,.message-input-area,.chat-messages-area{padding:12px}.message-input{padding:10px 14px!important}.send-button{padding:10px 16px!important}}