body,html{margin:0;padding:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}.hap-container{display:flex;flex-direction:column;justify-content:center;align-items:center;min-height:100vh;width:100%;background-color:#fff}#loading-view{text-align:center}.loading-gif{margin-bottom:1rem}#challenge-container{display:none;width:100%;height:100vh;position:absolute;top:0;left:0;z-index:10}#failure-view{display:none;text-align:center;padding:2rem}.failure-message{color:#333;font-size:1rem}.sandbox-challenge-card{box-sizing:border-box;width:100%;max-width:320px;margin:10vh auto 0;padding:1.5rem;border-radius:8px;border:1px solid #dddddd;box-shadow:0 2px 8px #00000014;background-color:#fff;text-align:left}.sandbox-challenge-header .logo-section{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.sandbox-challenge-header .bank-logo{height:32px}.sandbox-challenge-header .network-logo{height:24px}.sandbox-challenge-title{margin:0 0 .75rem;font-size:1.1rem;color:#333}.sandbox-challenge-details{list-style:none;margin:0 0 1rem;padding:0;font-size:.85rem;color:#555}.sandbox-challenge-instructions{margin:0 0 .75rem;font-size:.9rem;color:#333}.sandbox-challenge-form{display:flex;flex-direction:column;gap:.75rem}.sandbox-challenge-code-section{display:flex;flex-direction:column;gap:.25rem}.sandbox-challenge-code-section label{font-weight:600;font-size:.9rem;color:#333}.sandbox-challenge-form input{padding:.5rem;font-size:1rem}.sandbox-challenge-actions{display:flex;justify-content:flex-end;gap:.5rem}.sandbox-challenge-actions button{padding:.5rem 1rem;cursor:pointer;border:1px solid #356fd3;border-radius:2px;font-weight:600}.sandbox-challenge-actions button[type=submit]{color:#fff;background-color:#356fd3}.sandbox-challenge-error{margin:.75rem 0 0;font-size:.85rem;color:#c0392b}