:root{--bg-color: #1a1a1a;--text-color: #e0e0e0;--accent-color: #4a90e2;--message-bg-user: #2c2c2c;--message-bg-ai: #252525;--input-bg: #333;--code-bg: #2b2b2b;--code-header-bg: #383838}body.light-mode{--bg-color: #f0f0f0;--text-color: #333;--accent-color: #4a90e2;--message-bg-user: #e3f2fd;--message-bg-ai: #f5f5f5;--input-bg: #fff;--code-bg: #f8f8f8;--code-header-bg: #e8e8e8}body{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;background-color:var(--bg-color);color:var(--text-color);transition:background-color .3s,color .3s}#app{display:flex;flex-direction:column;height:100vh;max-width:800px;margin:0 auto}header{display:flex;justify-content:space-between;align-items:center;padding:1rem;background-color:var(--bg-color);border-bottom:1px solid var(--accent-color)}h1{font-size:1.5rem;margin:0}#theme-toggle{background:none;border:none;font-size:1.5rem;cursor:pointer;padding:.5rem}main{flex-grow:1;display:flex;flex-direction:column;padding:1rem;position:relative}#chat-container{flex-grow:1;overflow-y:auto;margin-bottom:1rem;padding:1rem;border-radius:8px;background-color:var(--bg-color)}.message{margin-bottom:1rem;padding:.75rem;border-radius:16px;max-width:auto}.message.user{background-color:var(--message-bg-user);align-self:flex-end;margin-left:auto;text-align:right}.message.ai{background-color:var(--message-bg-ai);align-self:flex-start}#chat-form{display:flex;gap:.5rem;position:sticky;bottom:0;background-color:var(--bg-color);padding:1rem 0}.input-container{display:flex;flex-grow:1;background-color:var(--input-bg);border-radius:8px;overflow:hidden}#user-input{flex-grow:1;padding:.75rem;border:none;background-color:transparent;color:var(--text-color);font-size:1rem;resize:none;min-height:20px;max-height:150px}#user-input:focus{outline:none}button[type=submit]{background-color:var(--accent-color);color:#fff;border:none;padding:.5rem;cursor:pointer;transition:background-color .3s}button[type=submit]:hover{background-color:#3a7bc8}.code-block{margin:.75rem 0;border-radius:8px;overflow:hidden}.code-header{display:flex;justify-content:space-between;align-items:center;background-color:var(--code-header-bg);padding:.5rem;font-size:.9rem}.code-language{font-weight:700}.copy-button{background-color:transparent;border:1px solid var(--text-color);color:var(--text-color);padding:.25rem .5rem;font-size:.8rem;cursor:pointer;transition:background-color .3s}.copy-button:hover{background-color:#ffffff1a}.code-block pre{margin:0;padding:1rem;background-color:var(--code-bg)}.code-block code{font-family:Courier New,Courier,monospace;font-size:.9rem}.typing-indicator{display:flex;justify-content:flex-start;align-items:center;height:20px}.typing-indicator span{height:8px;width:8px;background-color:var(--text-color);border-radius:50%;display:inline-block;margin-right:5px;animation:bounce 1.3s linear infinite}.typing-indicator span:nth-child(2){animation-delay:-1.1s}.typing-indicator span:nth-child(3){animation-delay:-.9s}@keyframes bounce{0%,60%,to{transform:translateY(0)}30%{transform:translateY(-4px)}}@media (max-width: 600px){.message{max-width:90%}#user-input{font-size:16px}}