body{background-color:#0f172a;color:#e2e8f0;margin:0}.sidebar{background:#0f172a;height:100vh;padding-top:20px}.sidebar a{display:block;padding:10px 20px;color:#9ca3af;text-decoration:none;border-radius:8px;margin:5px 10px}.sidebar a:hover{background:#1f2937;color:#fff}.main-content{height:100vh;display:flex;flex-direction:column;background:#0f172a}.chat-container{flex:1;overflow-y:auto;padding:15px}.message{display:inline-block;width:auto;max-width:75%;margin-bottom:12px;padding:10px 15px;border-radius:20px;word-wrap:break-word;font-size:14px}.user-message{background:#2563eb;color:#fff;margin-left:auto;display:block;width:fit-content}.ai-message{display:block;width:fit-content;background:#1e293b}.chat-input{background:#0f172a;padding:10px;border-top:1px solid #1f2937}.form-control{background:#111827;border:1px solid #334155;color:#e2e8f0}.form-control:focus{background:#111827;color:#fff;border-color:#2563eb;box-shadow:none}.btn-primary{background:#2563eb;border:none}.message p:last-of-type{margin-bottom:0}@media (max-width:768px){.main-content{height:100dvh}}