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solid var(--neutral-200)}.chat-messages::-webkit-scrollbar-thumb:hover{background-color:var(--primary-color)}.chat-messages::-webkit-scrollbar-button{display:none}#chatCanvas{position:absolute;top:0;left:0;width:100%;height:100%;background-color:var(--neutral-100);z-index:-1}.chat-input-container{display:flex;padding:var(--space-4);background-color:var(--neutral-50);border-top:1px solid var(--neutral-200);position:relative}.chat-input-container:before{content:"";position:absolute;top:-10px;left:0;right:0;height:10px;background:linear-gradient(to bottom,rgba(0,0,0,.03),transparent);pointer-events:none}.chat-input-container input{flex:1;padding:var(--space-3) var(--space-4);border:1px solid var(--neutral-300);border-radius:var(--radius-md);transition:all .3s ease;font-size:var(--font-size-md);background-color:#fff;color:var(--neutral-800)}.chat-input-container input:focus{border-color:var(--primary-color);box-shadow:0 0 0 4px #4f46e51a;outline:none}.chat-input-container 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button:disabled{background-color:var(--neutral-400);cursor:not-allowed;opacity:.7}.chat-input-container button.sending{background-color:var(--success)}.chat-input-container button.sending:after{content:"";animation:sendingDots 1.4s infinite}.chat-input-container button.practice-mode{background-color:var(--warning)}.typing-indicator{display:inline-flex;align-items:center;background-color:#fff;padding:var(--space-2) var(--space-3);border-radius:var(--radius-full);margin:var(--space-2) 0;box-shadow:var(--shadow-md)}.typing-dots{display:flex;align-items:center}.typing-dots span{height:8px;width:8px;margin:0 2px;background-color:var(--primary-color);border-radius:50%;display:inline-block;animation:typing-dot 1.4s infinite ease-in-out both}.typing-dots span:nth-child(1){animation-delay:-.32s}.typing-dots span:nth-child(2){animation-delay:-.16s}@keyframes typing-dot{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}@keyframes sendingDots{0%,20%{content:"."}40%,60%{content:".."}80%,to{content:"..."}}@keyframes pulse{0%{transform:scale(.8);opacity:.5}50%{transform:scale(1.2);opacity:1}to{transform:scale(.8);opacity:.5}}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.error-banner{position:absolute;top:0;left:0;right:0;background-color:var(--danger);color:#fff;padding:var(--space-3);display:flex;justify-content:space-between;align-items:center;z-index:1000;animation:slideDown .3s ease-out;box-shadow:var(--shadow-md)}.error-banner.info{background-color:var(--info)}.close-error{background:none;border:none;color:#fff;font-size:var(--font-size-lg);cursor:pointer;padding:0;width:24px;height:24px;display:flex;align-items:center;justify-content:center;opacity:.8;transition:opacity .2s}.close-error:hover{opacity:1;background:none}@keyframes slideDown{0%{transform:translateY(-100%)}to{transform:translateY(0)}}@media (max-width: 1000px){.chat-container{max-width:100%;left:0;top:0;right:0;bottom:0;border-radius:0}.chat-header{padding:var(--space-3)}.chat-title{font-size:var(--font-size-lg)}.chat-input-container,.chat-messages{padding:var(--space-3)}}