:root{--primary-color: #FEC830;--primary-hover: #E6B52D;--success-color: #FEC830;--error-color: #dc2626;--border-color: #D4C5A0;--text-color: #403735;--text-muted: #6B5F5A;--background: #F16375;--surface: #403735;--shadow: 0 1px 3px 0 rgb(0 0 0 / .1), 0 1px 2px -1px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.6;color:var(--text-color);background:var(--surface);min-height:100vh}.container{max-width:800px;margin:0 auto;padding:2rem 1rem}header{text-align:center;margin-bottom:3rem}.logo{max-width:200px;height:auto;margin-bottom:1rem}header h1{font-size:2.5rem;font-weight:700;color:#efebd9;margin-bottom:.5rem}header p{color:#efebd9}main{background:var(--background);border-radius:12px;padding:2rem;box-shadow:var(--shadow-lg)}.step-section{margin-bottom:1.5rem;padding-bottom:1.5rem;border-bottom:1px solid rgba(239,235,217,1)}.step-section:last-child{margin-bottom:0;border-bottom:none;padding-bottom:0}.step-section h2{font-size:1.5rem;font-weight:700;color:#efebd9;margin-bottom:0}.step-section p{font-size:1rem;color:#efebd9;margin-bottom:.5rem}.input-row{display:grid;grid-template-columns:2fr 1fr;gap:1.5rem;align-items:end}.input-column{display:flex;flex-direction:column}.validation-column{display:flex;align-items:center;min-height:3rem}.input-section label{display:block;font-weight:600;margin-bottom:.5rem;color:var(--text-color)}#upc-input{width:100%;padding:.75rem 1rem;border:none;border-radius:8px;font-size:1.1rem;font-family:Courier New,monospace;letter-spacing:.1em;transition:border-color .2s ease;box-shadow:var(--shadow)}#upc-input:focus{outline:none;box-shadow:0 0 0 3px #fec83033}.message{padding:.5rem;border-radius:6px;font-size:.9rem;font-weight:500;width:100%}.message.success{background:var(--primary-color);color:#5d4e37;position:relative;padding-left:2.5rem}.message.success:before{content:"✓";position:absolute;left:.75rem;top:50%;transform:translateY(-50%);font-weight:700;font-size:1rem;color:#5d4e37}.message.error{background:rgb(239 68 68 / .1);color:var(--error-color)}.size-buttons{display:flex;gap:.5rem}.size-btn{flex:1;padding:.5rem 1rem;border:none;border-radius:6px;background:white;color:var(--text-color);font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s ease;box-shadow:var(--shadow)}.size-btn:hover{background:rgba(254,200,48,.1)}.size-btn.active{background:var(--primary-color);color:var(--text-color);font-weight:600}.preview-container{min-height:150px;border-radius:8px;display:flex;align-items:center;justify-content:center;background:white;padding:1rem;box-shadow:var(--shadow)}.preview-container svg{max-width:100%;height:auto;border-radius:4px}.placeholder{color:var(--text-muted);font-style:italic;text-align:center}.placeholder.error{color:var(--error-color)}#download-btn{background:var(--primary-color);color:var(--text-color);border:none;padding:.75rem 2rem;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s ease;box-shadow:var(--shadow)}#download-btn:hover:not(:disabled){background:var(--primary-hover);transform:translateY(-1px);box-shadow:var(--shadow-lg)}#download-btn:disabled{background:var(--text-muted);cursor:not-allowed;transform:none;box-shadow:none}.disclaimer-section{margin-top:3rem;padding:1.5rem;background:rgba(64,55,53,.1);border-radius:8px}.disclaimer-section h3{font-size:1.1rem;font-weight:600;margin-bottom:1rem;color:#fff}.disclaimer-section p{font-size:.9rem;line-height:1.5;margin-bottom:1rem;color:#fff}.disclaimer-section p:last-child{margin-bottom:0}.disclaimer-section strong{color:#fff;font-weight:600}.footer-section{margin-top:2rem;text-align:center;padding:1.5rem}.footer-section p{font-size:.9rem;color:#efebd9;opacity:.7;margin-bottom:.5rem}.footer-logo{max-width:120px;height:auto;opacity:.8;transition:opacity .2s ease}.footer-logo:hover{opacity:1}@media (max-width: 640px){.container{padding:1rem}header h1{font-size:2rem}main{padding:1.5rem}.options-section{grid-template-columns:1fr}.input-row{grid-template-columns:1fr;gap:1rem}.validation-column{min-height:auto}}