*,*:before,*:after{box-sizing:border-box}:root{--page-bg: #eef0f3;--surface: #ffffff;--surface-soft: #f8fafc;--cash-green: #00d54b;--cash-green-dark: #00ad3c;--cash-green-pale: #e9fff0;--cash-green-soft: #b8facb;--border: #e3e7ed;--border-green: #9dedb7;--text: #111827;--muted: #667085;--hint: #9aa3b2;--danger: #b42318;color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}body{background:var(--page-bg);margin:0;min-height:100vh}button,input{font:inherit}button,a{-webkit-tap-highlight-color:transparent}.page-shell{align-items:flex-start;display:flex;justify-content:center;min-height:100vh;padding:0}.panel{background:var(--surface);border:0;border-radius:0 0 22px 22px;box-shadow:0 24px 60px #0f172a1f;max-width:443px;min-height:720px;padding:7px 15px 24px;width:100%}.checkout-panel{display:flex;flex-direction:column}.sheet-handle{background:#d1d5db;border-radius:999px;height:4px;margin:0 auto 17px;width:54px}.checkout-header{text-align:center}.checkout-header h1{align-items:center;color:var(--text);display:inline-flex;font-size:22px;font-weight:800;gap:4px;letter-spacing:0;line-height:1.2;margin:0}.checkout-header h1 span{color:var(--cash-green)}.verified-icon{background:#1d9bf0;border-radius:999px;color:#1d9bf0;flex:0 0 auto;margin-left:1px;padding:1px;stroke:#fff}.secure-badge,.expiry-pill{align-items:center;align-self:center;background:#e8fff0;border-radius:999px;color:#009c37;display:inline-flex;font-size:14px;font-weight:800;gap:6px;justify-content:center;line-height:1;margin:15px auto 20px;min-height:32px;padding:8px 17px}.expiry-pill{background:#fff7e8;border:1px solid #ffe0a3;color:#9b5b00;margin-bottom:16px}.expiry-pill.expired{background:#fff1f0;border-color:#ffc9c4;color:var(--danger)}.brand-card{align-items:center;border:1px solid var(--border);border-radius:20px;display:flex;flex-direction:column;justify-content:center;margin-bottom:20px;min-height:182px;padding:28px 18px}.brand-mark{align-items:center;background:var(--cash-green);border-radius:17px;display:flex;height:64px;justify-content:center;margin-bottom:11px;width:64px}.brand-logo{border-radius:13px;display:block;height:60px;width:60px}.brand-name{color:var(--text);font-size:20px;font-weight:800;line-height:1.2;margin-bottom:5px}.brand-tagline{color:var(--muted);font-size:14px;line-height:1.3}.amount-section{background:var(--cash-green-pale);border-radius:18px;margin-bottom:20px;padding:18px 18px 46px}.section-title{align-items:center;color:#009c37;display:flex;font-size:14px;font-weight:900;gap:7px;letter-spacing:.04em;margin-bottom:16px;text-transform:uppercase}.amount-grid{display:grid;gap:12px;grid-template-columns:repeat(3,minmax(0,1fr));margin-bottom:12px}.amount-button{background:var(--surface);border:1px solid var(--border-green);border-radius:999px;color:var(--text);cursor:pointer;font-size:15px;font-weight:900;height:48px;letter-spacing:0;transition:background .15s,border-color .15s,color .15s,transform .1s}.amount-button:hover{border-color:var(--cash-green)}.amount-button:active,.pay-button:active{transform:scale(.98)}.amount-button.selected{background:var(--cash-green);border-color:var(--cash-green);color:#fff}.small-button{align-items:center;background:var(--cash-green-soft);border:0;border-radius:999px;color:#009c37;cursor:pointer;display:flex;font-size:15px;font-weight:900;gap:6px;justify-content:center;min-height:45px;padding:11px 14px;width:100%}.small-button:hover{background:#a8f5bf}.small-button.centered{margin-top:16px}.expand-button{margin-bottom:13px}.input-wrap{align-items:center;display:flex;position:relative}.input-prefix{color:var(--cash-green-dark);font-size:20px;font-weight:900;left:19px;position:absolute}input[type=number]{-webkit-appearance:textfield;-moz-appearance:textfield;appearance:textfield;background:var(--surface);border:1px solid var(--border-green);border-radius:999px;color:var(--text);font-size:16px;font-weight:800;height:51px;outline:none;padding:12px 18px 12px 55px;width:100%}input[type=number]::placeholder{color:var(--text);opacity:1}input[type=number]:focus{border-color:var(--cash-green);box-shadow:0 0 0 3px #00d54b29}.field-error,.status-message.error{color:var(--danger)}.field-error{font-size:12px;margin:8px 4px 0}.pay-button{align-items:center;background:#00d650;border:0;border-radius:999px;box-shadow:0 18px 24px #00d54b2e;color:#fff;cursor:pointer;display:flex;font-size:17px;font-weight:900;height:55px;justify-content:center;letter-spacing:0;margin-top:0;text-decoration:none;transition:background .15s,transform .1s;width:100%}.pay-button:hover{background:#00c347}.pay-button:disabled{cursor:not-allowed;opacity:.7}.status-message{color:var(--muted);font-size:13px;margin:11px 0 0;min-height:18px;text-align:center}.powered-by{align-items:center;color:var(--hint);display:flex;font-size:14px;gap:4px;justify-content:center;margin:15px 0 0}.powered-logo,.mini-logo{border-radius:3px;height:14px;width:14px}.powered-by strong{color:#4b5563;font-weight:800}.amount-due{border:1px solid var(--border);border-radius:20px;margin-bottom:20px;padding:24px 18px;text-align:center}.amount-due span{color:var(--hint);display:block;font-size:12px;font-weight:800;margin-bottom:6px;text-transform:uppercase}.amount-due strong{color:var(--cash-green);display:block;font-size:46px;font-weight:900;line-height:1.1}.amount-due p{color:var(--muted);font-size:14px;margin:6px 0 0}.qr-frame{align-items:center;background:#fff;border:1px solid var(--border);border-radius:20px;display:flex;height:254px;justify-content:center;margin:0 auto 18px;padding:16px;position:relative;width:254px}.qr-frame>img:not(.qr-logo){display:block;height:220px;width:220px}.qr-logo{background:#fff;border:4px solid #ffffff;border-radius:12px;box-shadow:0 0 0 1px #00000014;height:48px;left:50%;position:absolute;top:50%;transform:translate(-50%,-50%);width:48px}.invoice-row{align-items:center;background:var(--cash-green-pale);border:1px solid var(--border-green);border-radius:999px;display:flex;gap:10px;justify-content:space-between;margin-bottom:18px;padding:9px 10px 9px 14px}.invoice-label{align-items:center;display:flex;gap:8px;min-width:0}.invoice-label span{color:var(--cash-green-dark);font-size:13px;font-weight:800}.invoice-label code{color:var(--muted);font-family:Courier New,Courier,monospace;font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.copy-button{align-items:center;background:#fff;border:1px solid var(--border-green);border-radius:999px;color:var(--cash-green-dark);cursor:pointer;display:inline-flex;flex:0 0 auto;font-size:12px;font-weight:900;gap:5px;min-height:32px;padding:5px 12px}.copy-button.copied{background:var(--cash-green);border-color:var(--cash-green);color:#fff}@media(min-width:520px){.page-shell{padding:24px}.panel{border-radius:22px}}@media(max-width:420px){.panel{min-height:100vh}.amount-grid{gap:10px}.amount-section{padding-left:17px;padding-right:17px}}