*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#f5f5f5;color:#333;line-height:1.6}.app{min-height:100vh}.header{display:flex;justify-content:space-between;align-items:center;padding:15px 30px;background:#fff;border-bottom:1px solid #eee}.logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:600}.logo-icon{width:32px;height:32px;background:linear-gradient(135deg,#6366f1,#8b5cf6);border-radius:8px}.nav-links{display:flex;gap:20px}.nav-links a{color:#666;text-decoration:none;font-size:14px}.nav-links a:hover{color:#6366f1}.main-layout{display:flex;max-width:1200px;margin:0 auto;padding:20px;gap:20px}.content{flex:1;min-width:0}.sidebar{width:350px;flex-shrink:0}.sidebar-section{background:#fff;border-radius:12px;padding:20px;margin-bottom:20px;box-shadow:0 1px 3px #0000001a}.sidebar-section h3{font-size:14px;margin-bottom:15px;color:#333}.event-log{background:#1e1e1e;border-radius:8px;padding:12px;max-height:200px;overflow-y:auto;font-family:monospace;font-size:12px}.log-entry{color:#4ade80;padding:4px 0;border-bottom:1px solid #333}.log-entry:last-child{border-bottom:none}.log-empty{color:#666;font-style:italic}.config-section{background:#fff;border-radius:12px;padding:20px;margin-bottom:20px;box-shadow:0 1px 3px #0000001a}.config-section h4{margin-bottom:15px;font-size:14px;color:#666}.card{background:#fff;border-radius:12px;padding:25px;margin-bottom:20px;box-shadow:0 1px 3px #0000001a}.card h2{display:flex;align-items:center;gap:10px;margin-bottom:15px;font-size:20px}.form-row{display:flex;gap:15px;flex-wrap:wrap}.form-group{flex:1;min-width:200px}.form-group label{display:block;font-size:12px;font-weight:500;color:#666;margin-bottom:5px}.form-group input,.form-group textarea,.form-group select{width:100%;padding:10px 12px;border:1px solid #ddd;border-radius:8px;font-size:14px;font-family:inherit}.form-group input:disabled{background:#f5f5f5;color:#999}.form-group textarea{min-height:150px;font-family:monospace;font-size:13px}.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:#6366f1;box-shadow:0 0 0 3px #6366f11a}.cart-items{border-top:1px solid #eee;margin-bottom:20px}.cart-item{display:flex;align-items:center;gap:15px;padding:15px 0;border-bottom:1px solid #eee}.cart-item-image{font-size:32px;width:50px;text-align:center}.cart-item-details{flex:1}.cart-item-name{font-weight:500;margin-bottom:2px}.cart-item-description{font-size:13px;color:#666}.cart-item-quantity{color:#666;font-size:14px}.cart-item-price{font-weight:600;font-size:16px;min-width:80px;text-align:right}.cart-summary{background:#f8f9fa;border-radius:8px;padding:15px;margin-bottom:20px}.summary-row{display:flex;justify-content:space-between;padding:8px 0;font-size:14px}.summary-row.total{border-top:1px solid #ddd;margin-top:8px;padding-top:12px;font-size:18px;font-weight:600}.btn{padding:12px 24px;border:none;border-radius:8px;font-size:14px;font-weight:500;cursor:pointer;transition:all .2s;width:100%}.btn-primary{background:linear-gradient(135deg,#6366f1,#8b5cf6);color:#fff}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 12px #6366f14d}.btn-primary:disabled{opacity:.6;cursor:not-allowed;transform:none}.btn-secondary{background:#f0f0f0;color:#333;margin-top:15px}.btn-secondary:hover{background:#e0e0e0}.qr-container{display:flex;justify-content:center;padding:20px;background:#f8f9fa;border-radius:12px;margin:20px 0}.qr-image{width:200px;height:200px;border-radius:8px}.checkout-info{background:#f8f9fa;border-radius:8px;padding:15px;margin-bottom:20px}.info-row{display:flex;justify-content:space-between;padding:8px 0;font-size:14px}.info-row .amount{font-weight:600;color:#6366f1;font-size:18px}.info-row .token{font-family:monospace;color:#666;font-size:12px}.waiting-indicator{display:flex;align-items:center;justify-content:center;gap:10px;padding:15px;color:#666;font-size:14px}.spinner{width:20px;height:20px;border:2px solid #eee;border-top-color:#6366f1;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.success-card{text-align:center}.success-icon{font-size:64px;margin-bottom:15px}.success-card h2{justify-content:center;color:#166534}.success-card p{color:#666;margin-bottom:20px}.order-details{background:#dcfce7;border-radius:8px;padding:15px;margin-bottom:20px}.order-details .info-row{color:#166534}.order-details .order-id{font-family:monospace;font-weight:600}.error-card{text-align:center}.error-icon{font-size:64px;margin-bottom:15px}.error-card h2{justify-content:center;color:#991b1b}.error-card p{color:#666;margin-bottom:20px}.code-block{background:#1e1e1e;border-radius:8px;padding:15px;overflow-x:auto}.code-block pre{color:#d4d4d4;font-family:SF Mono,Monaco,Cascadia Code,monospace;font-size:11px;line-height:1.5;white-space:pre;margin:0}.loading{text-align:center;padding:40px;color:#666}