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.message.assistant{background:#f1f1f1;color:#222}.file-message{display:flex;align-items:center;gap:8px}.file-preview{max-width:100px;max-height:80px;border-radius:5px;object-fit:cover}.file-icon{font-size:20px}.file-name{font-size:14px;color:inherit}.input-area{display:flex;gap:10px;margin-top:10px;align-items:center}.input-area textarea{flex-grow:1;padding:12px 16px;font-size:16px;border-radius:12px;border:1px solid #ccc;resize:none;min-height:50px}.input-area button{padding:12px 16px;border:none;border-radius:12px;font-weight:600;cursor:pointer;background:#06f;color:#fff;transition:.2s}.input-area button:hover{transform:translateY(-1px)}.error{color:red;margin-top:10px}.typing-indicator{display:flex;gap:4px;height:18px}.typing-indicator span{width:6px;height:6px;background:#999;border-radius:50%;animation:bounce 1.2s infinite ease-in-out}.typing-indicator span:nth-child(2){animation-delay:.2s}.typing-indicator span:nth-child(3){animation-delay:.4s}@keyframes bounce{0%,80%,to{transform:scale(0)}40%{transform:scale(1)}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:#f4f6f8;color:#333;min-height:100vh;display:flex;flex-direction:column}.container{max-width:500px;margin:2rem auto;padding:0 1rem}.header{text-align:center;padding:1rem 0;background:#fff;border-bottom:2px solid #eee;box-shadow:0 2px 4px #0000000d}.header h1{font-size:1.8rem;color:#444}.header p{font-size:.95rem;color:#777;margin-top:.2rem}.balance{text-align:center;margin:1.5rem 0}.balance h2{font-size:1.4rem;color:#555}.balance p{font-size:1.8rem;font-weight:700;margin-top:.3rem}.income-expense{display:flex;justify-content:space-between;background:#fff;padding:.8rem 1rem;border-radius:6px;box-shadow:0 2px 4px #0000000d;margin-bottom:1.5rem}.income,.expense{flex:1;text-align:center}.income h4,.expense h4{font-size:.95rem;color:#777}.money-plus{color:#2ecc71;font-size:1.2rem;margin-top:.3rem}.money-minus{color:#e74c3c;font-size:1.2rem;margin-top:.3rem}.transaction-list{margin-bottom:1.5rem}.transaction-list h3{margin-bottom:.6rem;font-size:1.1rem;color:#444}.list{list-style:none}.list li{background:#fff;display:flex;justify-content:space-between;align-items:center;padding:.6rem .8rem;border-right:5px solid transparent;margin-bottom:.5rem;border-radius:4px;box-shadow:0 1px 3px #0000000d}.list li.plus{border-right-color:#2ecc71}.list li.minus{border-right-color:#e74c3c}.list li span{font-weight:700}.delete-btn{background:#e74c3c;border:none;color:#fff;font-size:.8rem;padding:.2rem .5rem;border-radius:50%;cursor:pointer;transition:background .2s ease-in-out}.delete-btn:hover{background:#c0392b}.add-transaction h3{margin-bottom:.6rem;color:#444}.form-control{margin-bottom:.8rem}.form-control label{display:block;margin-bottom:.3rem;font-size:.9rem;color:#555}.form-control input{width:100%;padding:.5rem;border-radius:4px;border:1px solid #ccc;font-size:.95rem}button[type=submit]{width:100%;background:#3498db;color:#fff;padding:.6rem;font-size:1rem;border:none;border-radius:4px;cursor:pointer;transition:background .2s ease-in-out}button[type=submit]:hover{background:#2980b9}.footer{margin-top:auto;padding:1rem 0;text-align:center;font-size:.85rem;background:#fff;border-top:1px solid #eee;color:#777}