:root{--background: #f8fafc;--surface: #ffffff;--text-primary: #0f172a;--text-secondary: #64748b;--text-muted: #94a3b8;--border: #e2e8f0;--accent: #0f172a;--accent-hover: #1e293b;--success: #22c55e;--success-light: #dcfce7;--error: #ef4444;--error-light: #fee2e2;--warning: #f59e0b;--warning-light: #fef3c7}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--background);min-height:100vh;display:flex;align-items:center;justify-content:center;color:var(--text-primary);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{width:100%;min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.container{width:100%;max-width:480px}.card{background:var(--surface);border-radius:16px;padding:40px 32px;border:1px solid var(--border);text-align:center}.logo{font-size:24px;font-weight:600;color:var(--text-primary);letter-spacing:-.02em;margin-bottom:24px}.subtitle{font-size:14px;color:var(--text-secondary);margin-bottom:8px;font-weight:400}.amount{font-size:40px;font-weight:600;color:var(--text-primary);letter-spacing:-.02em;margin-bottom:8px}.amount-small{font-size:32px}.description{font-size:15px;color:var(--text-secondary);margin-bottom:32px}.payment-method{display:flex;align-items:center;gap:12px;padding:16px;background:var(--background);border:1px solid var(--border);border-radius:12px;margin-bottom:24px}.payment-method-icon{width:40px;height:40px;display:flex;align-items:center;justify-content:center;background:var(--surface);border-radius:8px;border:1px solid var(--border)}.payment-method-icon svg{width:24px;height:24px}.payment-method-info{text-align:left}.payment-method-name{font-size:15px;font-weight:500;color:var(--text-primary)}.payment-method-desc{font-size:13px;color:var(--text-secondary)}.btn-primary{width:100%;background:var(--accent);color:#fff;border:none;border-radius:12px;padding:16px 24px;font-size:16px;font-weight:500;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center;gap:8px}.btn-primary:hover{background:var(--accent-hover)}.btn-primary:active{transform:scale(.98)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-secondary{width:100%;background:transparent;color:var(--text-primary);border:1px solid var(--border);border-radius:12px;padding:14px 24px;font-size:15px;font-weight:500;cursor:pointer;transition:all .2s ease;text-decoration:none;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-secondary:hover{background:var(--background);border-color:var(--text-muted)}.btn-link{background:none;border:none;color:var(--text-secondary);font-size:14px;font-weight:500;cursor:pointer;padding:12px;transition:color .2s ease}.btn-link:hover{color:var(--text-primary)}.security-hint{display:flex;align-items:center;justify-content:center;gap:6px;margin-top:16px;font-size:13px;color:var(--text-muted)}.security-hint svg{width:14px;height:14px}.spinner{width:40px;height:40px;border:3px solid var(--border);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite;margin:0 auto 20px}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{font-size:15px;color:var(--text-secondary)}.success-icon{width:80px;height:80px;margin:0 auto 24px;position:relative}.success-circle{width:80px;height:80px;border-radius:50%;background:var(--success-light);display:flex;align-items:center;justify-content:center;animation:scaleIn .4s ease-out}.success-checkmark{width:40px;height:40px;stroke:var(--success);stroke-width:3;stroke-linecap:round;stroke-linejoin:round;fill:none}.success-checkmark path{stroke-dasharray:48;stroke-dashoffset:48;animation:drawCheck .4s ease-out .2s forwards}@keyframes scaleIn{0%{transform:scale(0);opacity:0}50%{transform:scale(1.1)}to{transform:scale(1);opacity:1}}@keyframes drawCheck{to{stroke-dashoffset:0}}.success-title{font-size:24px;font-weight:600;color:var(--text-primary);margin-bottom:8px}.success-message{font-size:15px;color:var(--text-secondary);margin-bottom:32px}.receipt-info{background:var(--background);border-radius:12px;padding:16px;margin-bottom:24px;text-align:left}.receipt-row{display:flex;justify-content:space-between;padding:8px 0;font-size:14px}.receipt-row:not(:last-child){border-bottom:1px solid var(--border)}.receipt-label{color:var(--text-secondary)}.receipt-value{color:var(--text-primary);font-weight:500}.buttons-group{display:flex;flex-direction:column;gap:12px}.card.error{border-color:var(--error)}.error-icon{width:64px;height:64px;margin:0 auto 20px;color:var(--error)}.error-title{font-size:20px;font-weight:600;color:var(--error);margin-bottom:8px}.error-message{font-size:15px;color:var(--text-secondary);margin-bottom:24px}.card.warning{border-color:var(--warning)}.warning-icon{width:64px;height:64px;margin:0 auto 20px;color:var(--warning)}.warning-title{font-size:18px;font-weight:600;color:var(--text-primary);margin-bottom:8px}.warning-box{background:var(--warning-light);border-radius:12px;padding:20px;margin:20px 0;text-align:left}.warning-box h4{font-size:14px;font-weight:600;color:var(--text-primary);margin-bottom:12px}.warning-box ol{padding-left:20px;font-size:14px;color:var(--text-secondary);line-height:1.8}.warning-box strong{color:var(--text-primary)}.welcome-icon{width:80px;height:80px;margin:0 auto 24px;color:var(--text-muted)}.welcome-title{font-size:28px;font-weight:600;color:var(--text-primary);margin-bottom:16px}.welcome-subtitle{font-size:16px;color:var(--text-secondary);line-height:1.6;margin-bottom:24px}.welcome-message{font-size:17px;color:var(--text-primary);line-height:1.6;margin-bottom:12px}.welcome-hint{font-size:20px;margin-top:24px}@media (max-width: 480px){#root{padding:40px 16px 16px;align-items:flex-start}.card{padding:32px 24px;border-radius:12px}.amount{font-size:36px}.success-icon,.success-circle{width:72px;height:72px}.success-checkmark{width:36px;height:36px}}