:root{--color-primary: #D32F2F;--color-primary-dark: #B71C1C;--color-secondary: #FFC107;--color-white: #FFFFFF;--color-bg: #F8F9FA;--color-text: #212529;--color-text-muted: #6C757D;--color-success: #28a745;--container-width: 1200px;--header-height: 60px;--radius-sm: 4px;--radius-md: 8px;--radius-lg: 16px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,sans-serif;background-color:var(--color-bg);color:var(--color-text);line-height:1.5}.container{max-width:var(--container-width);margin:0 auto;padding:0 1rem}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.5rem 1rem;border-radius:var(--radius-md);font-weight:600;cursor:pointer;border:none;transition:opacity .2s}.btn:hover{opacity:.9}.btn-primary{background-color:var(--color-primary);color:var(--color-white)}.btn-secondary{background-color:var(--color-secondary);color:var(--color-text)}.header{background-color:var(--color-primary-dark);color:var(--color-white);height:var(--header-height);display:flex;align-items:center;position:sticky;top:0;z-index:100}@media print{.header,.btn,.cart-btn,.category-nav{display:none!important}body{background:white;font-size:12pt}.container{max-width:100%;margin:0;padding:0}h1{font-size:24pt;text-align:center;margin-bottom:2rem;color:#000!important}h2{border-bottom:1px solid #000;padding-bottom:.5rem;margin-top:2rem}.product-grid{display:block!important}.product-card{border:none!important;box-shadow:none!important;border-bottom:1px dotted #ccc!important;padding:1rem 0!important;page-break-inside:avoid;display:flex;justify-content:space-between}.product-card img,.product-card button{display:none!important}.product-card h3{margin:0;font-size:14pt}.product-card p{color:#666;font-style:italic}}