*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--primary: #6C47FF;--primary-hover: #5a38d6;--danger: #e53e3e;--success: #38a169;--text: #1a202c;--muted: #718096;--border: #e2e8f0;--bg: #ffffff;--radius: 8px;--font: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}body{font-family:var(--font);background:var(--bg);color:var(--text);min-height:100vh;display:flex;align-items:center;justify-content:center}#app{width:100%;max-width:400px;padding:24px}.card{background:var(--bg);border:1px solid var(--border);border-radius:12px;padding:32px 24px;box-shadow:0 4px 24px #0000000f}.logo{display:flex;align-items:center;gap:8px;margin-bottom:24px}.logo-mark{width:32px;height:32px;background:var(--primary);border-radius:8px;display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:14px}.logo-text{font-weight:600;font-size:16px}.merchant-info{margin-bottom:24px;padding-bottom:20px;border-bottom:1px solid var(--border)}.merchant-name{font-size:14px;color:var(--muted)}.amount-display{font-size:28px;font-weight:700;margin-top:4px}.screen-title{font-size:18px;font-weight:600;margin-bottom:6px}.screen-subtitle{font-size:14px;color:var(--muted);margin-bottom:24px}.form-group{margin-bottom:16px}label{display:block;font-size:13px;font-weight:500;margin-bottom:6px;color:var(--text)}input{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius);font-size:15px;font-family:var(--font);color:var(--text);outline:none;transition:border-color .15s}input:focus{border-color:var(--primary)}input.otp-input{text-align:center;letter-spacing:8px;font-size:22px;font-weight:600}.btn{width:100%;padding:12px 20px;border:none;border-radius:var(--radius);font-size:15px;font-weight:600;font-family:var(--font);cursor:pointer;transition:background .15s,opacity .15s}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover:not(:disabled){background:var(--primary-hover)}.btn-primary:disabled{opacity:.6;cursor:not-allowed}.btn-ghost{background:transparent;color:var(--muted);font-size:13px;padding:8px;margin-top:8px}.btn-ghost:hover{color:var(--text)}.error-message{color:var(--danger);font-size:13px;margin-top:8px}.spinner{display:inline-block;width:18px;height:18px;border:2px solid rgba(255,255,255,.4);border-top-color:#fff;border-radius:50%;animation:spin .7s linear infinite;vertical-align:middle;margin-right:6px}@keyframes spin{to{transform:rotate(360deg)}}.result-icon{width:64px;height:64px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin:0 auto 20px;font-size:28px}.result-icon.success{background:#f0fff4;color:var(--success)}.result-icon.failed{background:#fff5f5;color:var(--danger)}.result-title{font-size:20px;font-weight:700;text-align:center;margin-bottom:8px}.result-message{font-size:14px;color:var(--muted);text-align:center}.resend-row{display:flex;align-items:center;justify-content:center;gap:4px;margin-top:12px;font-size:13px;color:var(--muted)}.resend-link{color:var(--primary);cursor:pointer;text-decoration:none;font-weight:500}.resend-link:hover{text-decoration:underline}.sandbox-badge{display:inline-flex;align-items:center;gap:4px;background:#fef3c7;color:#92400e;font-size:11px;font-weight:600;padding:2px 8px;border-radius:99px;margin-bottom:16px}