:root{color-scheme:light;--ink: #090909;--muted: #5b5b61;--line: #d8d6d1;--paper-soft: #f6f2e8;--magenta: #a7188f;--teal: #057f78;--danger: #a63820;--shadow: 0 24px 70px rgb(9 9 9 / .12);font-family:Avenir Next,Trebuchet MS,Verdana,sans-serif;font-synthesis:none;text-rendering:geometricPrecision}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;color:var(--ink);background:linear-gradient(rgb(9 9 9 / .045) 1px,transparent 1px),linear-gradient(90deg,rgb(9 9 9 / .045) 1px,transparent 1px),linear-gradient(135deg,#fff 0%,var(--paper-soft) 100%);background-size:28px 28px,28px 28px,100% 100%}button,input,select,textarea{font:inherit}.shell{display:grid;grid-template-columns:minmax(320px,.86fr) minmax(420px,1.14fr);gap:clamp(24px,4vw,56px);width:min(1180px,calc(100% - 40px));min-height:100vh;margin:0 auto;padding:clamp(28px,5vw,72px) 0;align-items:center}.builder,.preview{min-width:0;background:#ffffffeb;border:1px solid var(--line);border-radius:6px;box-shadow:var(--shadow)}.builder{padding:clamp(24px,4vw,42px)}.title-block{display:flex;align-items:end;justify-content:space-between;gap:24px;margin-bottom:28px;border-bottom:3px solid var(--ink);padding-bottom:18px}.brand-mark,.section-label{margin:0;color:var(--magenta);font-size:.78rem;font-weight:900;letter-spacing:.08em}h1,h2{margin:0;font-family:DIN Condensed,Arial Narrow,Impact,sans-serif;font-weight:900;letter-spacing:0;text-transform:uppercase}h1{font-size:clamp(3.7rem,9vw,7rem);line-height:.82;max-width:260px}h2{font-size:clamp(2.4rem,5vw,4.4rem);line-height:.9}.paynow-form{display:grid;gap:16px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:14px}label{display:grid;gap:7px}label span{color:var(--muted);font-size:.78rem;font-weight:800;letter-spacing:.05em;text-transform:uppercase}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:4px;background:#fff;color:var(--ink);outline:none}input,select{min-height:46px;padding:0 13px}input:focus,select:focus,textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px #057f7824}.switch-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:4px}.switch{grid-template-columns:18px 1fr;align-items:center;min-height:44px;border:1px solid var(--line);border-radius:4px;padding:0 12px;background:#fff}.switch input{width:16px;min-height:16px;accent-color:var(--magenta)}.switch span{color:var(--ink);letter-spacing:0;text-transform:none}.preview{padding:clamp(20px,4vw,34px)}.preview-header{display:flex;justify-content:space-between;gap:20px;align-items:start;margin-bottom:22px}.status-pill{margin:0;border:1px solid rgb(5 127 120 / .34);border-radius:999px;padding:8px 12px;color:var(--teal);background:#057f7814;font-size:.8rem;font-weight:900;white-space:nowrap}.status-pill.danger{border-color:#a6382057;color:var(--danger);background:#a6382014}.qr-stage{display:grid;place-items:center;background:linear-gradient(45deg,rgb(167 24 143 / .08),transparent 44%),#fff;border:1px solid var(--line);border-radius:6px;min-height:0;padding:clamp(14px,3vw,26px)}canvas{display:block;width:100%;max-width:540px;height:auto;aspect-ratio:1;border:10px solid #fff;box-shadow:0 16px 40px #0000001f}.status-line{margin:14px 0 0;color:var(--muted);font-size:.94rem;line-height:1.4}.actions{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin-top:18px}button{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:42px;border:1px solid var(--ink);border-radius:4px;padding:0 14px;background:var(--ink);color:#fff;font-weight:900;cursor:pointer}button:hover{transform:translateY(-1px)}button:nth-child(2){background:#fff;color:var(--ink)}button:nth-child(3){border-color:var(--magenta);background:var(--magenta)}button svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}textarea{min-height:92px;margin-top:14px;padding:12px;resize:vertical;color:var(--muted);font-family:SF Mono,Courier New,monospace;font-size:.76rem;line-height:1.45}@media(max-width:900px){.shell{grid-template-columns:minmax(0,1fr);align-items:start}.preview{order:-1}canvas{max-width:100%}}@media(max-width:560px){.shell{width:min(100% - 24px,1180px);padding:12px 0 28px}.title-block,.preview-header,.form-row,.switch-grid{grid-template-columns:1fr;display:grid}.title-block{align-items:start}h1{max-width:none}.actions{grid-template-columns:1fr}.actions button{width:100%}}