:root{--primary-color: #ff6b6b;--secondary-color: #4ecdc4;--background-color: #f7f9fc;--text-color: #2d3436;--font-family: "Inter", system-ui, -apple-system, sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--background-color);color:var(--text-color);line-height:1.6;overflow-x:hidden}.app-shell{max-width:800px;margin:0 auto;padding:1rem;width:100%}.header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem;padding:1rem 0;border-bottom:2px solid #eee}.header-top{display:flex;align-items:center;gap:1rem}.nav-list{display:flex;list-style:none;gap:1.5rem;align-items:center}.nav-list a.active{color:var(--primary-color)!important;font-weight:700!important;position:relative}.nav-list 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.ingredient-checkbox{color:var(--secondary-color)}.ingredient-name{font-size:.95rem;font-weight:500;color:var(--text-color)}.empty-shopping-list{text-align:center;padding:3rem 1rem;color:#a0aec0}.shopping-list-content::-webkit-scrollbar{width:6px}.shopping-list-content::-webkit-scrollbar-track{background:transparent}.shopping-list-content::-webkit-scrollbar-thumb{background:#e2e8f0;border-radius:10px}