:root{--background:#e1e2e7;--foreground:#1a1b26;--primary:#7aa2f7;--primary-foreground:#fff;--secondary:#c0caf5;--secondary-foreground:#1a1b26;--accent:#bb9af7;--accent-foreground:#fff;--muted:#dcdfe4;--muted-foreground:#4f5668;--card:#fff;--card-foreground:#1a1b26;--border:#a9b1d6;--input:#c0caf5;--ring:#7aa2f7}.dark{--background:#1a1b26;--foreground:#c0caf5;--primary:#7aa2f7;--primary-foreground:#1a1b26;--secondary:#2e3440;--secondary-foreground:#a9b1d6;--accent:#bb9af7;--accent-foreground:#1a1b26;--muted:#1f2335;--muted-foreground:#7c85a1;--card:#24283b;--card-foreground:#c0caf5;--border:#3b4261;--input:#3b4261;--ring:#7aa2f7}body{background-color:var(--background);color:var(--foreground)}.chat-container{display:flex;flex-direction:column;align-items:center;justify-content:flex-start;height:100vh;padding:0}.chat-card{width:100%;max-width:42rem;margin-left:auto;margin-right:auto;background:var(--background);border-radius:8px;box-shadow:0 2px 4px rgba(0,0,0,.1)}.chat-card,.chat-content{flex:1 1;min-height:0;display:flex;flex-direction:column}.chat-content{padding:1rem}.messages-container{flex:1 1;min-height:0;overflow-y:auto;padding-right:1rem}.chat-header{display:flex;justify-content:space-between;align-items:center;padding:1rem;border-bottom:1px solid var(--border)}.chat-title{font-size:1.5rem;font-weight:600;margin:0}.theme-toggle{background:none;border:none;cursor:pointer;color:var(--foreground)}.message-list{display:flex;flex-direction:column;gap:1rem}.message-wrapper{display:flex;align-items:flex-start;gap:.75rem}.message-wrapper.user{flex-direction:row-reverse}.avatar{width:2rem;height:2rem;border-radius:50%;background:var(--muted);color:var(--muted-foreground);display:flex;align-items:center;justify-content:center}.message{padding:.5rem 1rem;border-radius:8px;max-width:80%}.message.assistant{background:var(--muted);color:var(--foreground)}.message.user{background:var(--primary);color:var(--primary-foreground)}.loading{display:flex;align-items:center;gap:.5rem;color:var(--muted-foreground)}.loading .icon{animation:pulse 1.5s infinite}.chat-footer{border-top:1px solid var(--border);padding:1rem}.chat-form{display:flex;gap:.5rem;width:100%}.input-wrapper{position:relative;width:100%;display:flex;align-items:center}.chat-input{width:100%;min-height:50px;padding:.5rem 3rem .5rem .5rem;border:1px solid var(--border);border-radius:4px;resize:none;font-family:inherit;font-size:16px;background:var(--background);color:var(--foreground)}.send-button{position:absolute;right:.5rem;top:50%;transform:translateY(-50%);height:70%;aspect-ratio:1/1;background:var(--primary);color:var(--primary-foreground);border:none;cursor:pointer;border-radius:4px;display:flex;align-items:center;justify-content:center;padding:0}.send-button svg{width:50%;height:50%}.send-button:disabled{opacity:.5;cursor:not-allowed}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@media (max-width:767px){.chat-container{padding:0;height:100vh}.chat-card{border-radius:0;margin-top:0;height:100vh}.chat-content{padding:.5rem .5rem 0;flex:1 1;display:flex;flex-direction:column;min-height:0}.chat-footer{position:fixed;bottom:0;left:0;right:0;background:var(--background);padding:.5rem;box-shadow:0 -2px 4px rgba(0,0,0,.1);z-index:10}.messages-container{padding-bottom:80px}}