*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background:linear-gradient(135deg,#667eea 0%,#764ba2 100%);min-height:100vh;color:#333}#app{min-height:100vh;display:flex;flex-direction:column;align-items:center;justify-content:center;padding:20px}.container{background:white;border-radius:20px;padding:40px;box-shadow:0 20px 40px #0000001a;max-width:600px;width:100%;text-align:center}h1{color:#2c3e50;margin-bottom:10px;font-size:2.5rem}.subtitle{color:#7f8c8d;margin-bottom:30px;font-size:1.1rem}.file-input-container{margin-bottom:30px}.file-input{width:100%;padding:15px;border:2px dashed #bdc3c7;border-radius:10px;background:#f8f9fa;cursor:pointer;transition:all .3s ease}.file-input:hover{border-color:#3498db;background:#ecf0f1}.file-input input{display:none}.file-input-label{display:block;color:#7f8c8d;font-size:1.1rem}.preview-container{margin-bottom:30px}.preview-title{color:#2c3e50;margin-bottom:15px;font-size:1.2rem}.image-preview{max-width:200px;max-height:200px;border-radius:10px;box-shadow:0 5px 15px #0000001a;margin:0 auto}.button-group{display:flex;gap:15px;justify-content:center;flex-wrap:wrap}.btn{padding:12px 24px;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;text-decoration:none;display:inline-flex;align-items:center;gap:8px}.btn-primary{background:#3498db;color:#fff}.btn-primary:hover{background:#2980b9;transform:translateY(-2px)}.btn-secondary{background:#2ecc71;color:#fff}.btn-secondary:hover{background:#27ae60;transform:translateY(-2px)}.btn:disabled{background:#bdc3c7;cursor:not-allowed;transform:none}.status-message{margin-top:20px;padding:15px;border-radius:8px;font-weight:500}.status-success{background:#d4edda;color:#155724;border:1px solid #c3e6cb}.status-error{background:#f8d7da;color:#721c24;border:1px solid #f5c6cb}@media (max-width: 768px){.container{padding:20px;margin:10px}h1{font-size:2rem}.button-group{flex-direction:column}.btn{width:100%}}