.app{min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2);padding:2rem 1rem}.header{text-align:center;color:#fff;margin-bottom:2rem}.header h1{margin:0 0 .5rem;font-size:2.5rem;font-weight:700}.header p{margin:0;font-size:1.1rem;opacity:.9}.container{max-width:1600px;margin:0 auto;background:#fff;border-radius:12px;padding:2rem;box-shadow:0 20px 60px #0000004d;display:grid;grid-template-columns:1fr;gap:2rem}@media (min-width: 1400px){.container{grid-template-columns:1fr 450px;gap:3rem;align-items:start}.form-grid{grid-column:1}.preview-section{grid-column:2;grid-row:1 / 4;position:sticky;top:2rem}.actions,.info{grid-column:1}}.form-grid{display:grid;gap:2rem}.section{border-bottom:1px solid #e0e0e0;padding-bottom:1.5rem}.section:last-child{border-bottom:none;padding-bottom:0}.section h2{margin:0 0 1rem;font-size:1.3rem;color:#333;font-weight:600}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1rem}.form-row:last-child{margin-bottom:0}.form-row.full-width{grid-template-columns:1fr}.field-hint{color:#666;font-size:.9rem}label{display:flex;flex-direction:column;font-size:.9rem;font-weight:500;color:#555;gap:.4rem}label.checkbox-label{flex-direction:row;align-items:center;gap:.5rem}input[type=number],input[type=text],select{padding:.6rem;border:1px solid #ddd;border-radius:6px;font-size:1rem;font-family:inherit;transition:border-color .2s}input[type=number]:focus,input[type=text]:focus,select:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}input[type=checkbox]{width:18px;height:18px;cursor:pointer}.actions{display:flex;gap:1rem;justify-content:flex-end;margin-top:2rem;padding-top:2rem;border-top:2px solid #f0f0f0}.preview-section{margin-top:2rem;border-top:2px solid #f0f0f0;padding-top:1.5rem}@media (min-width: 1400px){.preview-section{margin-top:0;border-top:none;padding-top:0}}.preview-title-row{display:flex;justify-content:space-between;align-items:center;margin-bottom:.75rem}.preview-title-row h2{margin:0;font-size:1.3rem;color:#333}.preview-state{color:#666;font-size:.9rem}.preview-error{margin:0 0 1rem;color:#b42318;font-size:.95rem}.preview-frame{width:100%;height:560px;border:1px solid #e0e0e0;border-radius:8px;background:#fff}.btn{padding:.8rem 2rem;border:none;border-radius:6px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;font-family:inherit}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.btn-secondary{background:#f5f5f5;color:#333}.btn-secondary:hover{background:#e0e0e0}.info{margin-top:1.5rem;padding:1rem;background:#f8f9fa;border-radius:6px;text-align:center}.info p{margin:0;color:#666;font-size:.95rem}.position-selector{display:flex;flex-direction:column;align-items:center;gap:.5rem;margin-top:1rem;padding:1rem;background:#f9f9f9;border-radius:8px;border:1px solid #e0e0e0}.position-btn{padding:.2rem .5rem;border:2px solid #ccc;background:#fff;color:#333;font-size:.95rem;cursor:pointer;border-radius:6px;transition:all .2s ease;display:flex;align-items:center;justify-content:center;font-weight:500;word-wrap:break-word;font-family:monospace;line-height:1.2;height:auto;min-height:unset;max-width:100px}.position-btn:hover{border-color:#667eea;color:#667eea;background:#f0f4ff}.position-btn.active{background:#667eea;border-color:#667eea;color:#fff;box-shadow:0 4px 12px #667eea66}.position-btn.left,.position-btn.right{writing-mode:vertical-lr;transform:rotate(180deg);padding:.2rem .3rem;min-width:32px;max-width:100px}.position-btn.left.horizontal,.position-btn.right.horizontal{writing-mode:horizontal-tb;transform:none;padding:.2rem .5rem;min-width:unset;max-width:100px}.position-btn.left .rotated-text{transform:rotate(180deg);white-space:nowrap;line-height:1.2}.position-btn.right .rotated-text{transform:none;white-space:nowrap;line-height:1.2}.position-sides{display:flex;gap:1rem;align-items:center}.qr-preview{width:80px;height:80px;border:2px dashed #999;background:#f0f0f0;border-radius:4px;display:flex;align-items:center;justify-content:center;font-weight:700;color:#666;font-size:.9rem;flex-shrink:0}.rotated-text{display:inline-block;transform:rotate(90deg);white-space:nowrap;transform-origin:center;line-height:1.2}@media (max-width: 768px){.app{padding:1rem .5rem}.container{padding:1.5rem}.form-row{grid-template-columns:1fr}.header h1{font-size:2rem}.actions{flex-direction:column}.btn{width:100%}.preview-frame{height:420px}}.header-link{color:#fffffff2;text-decoration:underline;text-underline-offset:2px}.header-link:hover{color:#fff;text-decoration:none}.site-footer{margin-top:1.5rem;text-align:center;color:#ffffffbf;font-size:.9rem}.site-footer a{color:#ffffffe6;text-decoration:underline;text-underline-offset:2px}.site-footer a:hover{color:#fff;text-decoration:none}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f5f5f5}*{box-sizing:border-box}#root{min-height:100vh}