:root{--color-primary: #2563eb;--color-primary-dark: #1d4ed8;--color-primary-light: rgba(37, 99, 235, .1);--color-secondary: #64748b;--color-success: #22c55e;--color-warning: #f59e0b;--color-error: #ef4444;--color-bg: #f8fafc;--color-surface: #ffffff;--color-text: #0f172a;--color-text-muted: #64748b;--color-border: #e5e7eb;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow: 0 1px 3px 0 rgb(0 0 0 / .1), 0 1px 2px -1px rgb(0 0 0 / .1);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--radius: 8px}*{margin:0;padding:0;box-sizing:border-box}body{font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background-color:var(--color-bg);color:var(--color-text);line-height:1.5}h1,h2,h3,h4,h5,h6{font-weight:700}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}.container{max-width:1200px;margin:0 auto;padding:0 1rem}.card{background:var(--color-surface);border-radius:var(--radius);border:1px solid var(--color-border);box-shadow:var(--shadow-sm);padding:1.5rem;transition:box-shadow .2s,border-color .2s}.card:hover{box-shadow:var(--shadow-md)}.card.stat-card{display:flex;align-items:center;gap:1rem}.stat-card .icon-wrapper{display:flex;align-items:center;justify-content:center;width:48px;height:48px;border-radius:50%;background:var(--color-primary-light);flex-shrink:0}.stat-card .icon-wrapper i{font-size:1.25rem;color:var(--color-primary)}.stat-card .stat-content{display:flex;flex-direction:column;align-items:flex-start}.stat-card .stat-label{font-size:.875rem;color:var(--color-text-muted);font-weight:500}.stat-card .stat-value{font-size:2rem;font-weight:700;line-height:1.2;color:var(--color-primary)}.stat-card .stat-value.empty{color:var(--color-text-muted)}.search-wrapper{position:relative;width:100%}.search-wrapper i{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:var(--color-text-muted)}.search-wrapper .input{padding-left:2.75rem;padding-top:.75rem;padding-bottom:.75rem}.badge{display:inline-flex;align-items:center;gap:.375rem;padding:.25rem .75rem;border-radius:9999px;font-size:.75rem;font-weight:500;background:var(--color-primary-light);color:var(--color-primary)}.badge i{font-size:.625rem}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.5rem 1rem;border-radius:var(--radius);font-weight:500;cursor:pointer;border:none;transition:background-color .2s}.btn-primary{background-color:var(--color-primary);color:#fff}.btn-primary:hover{background-color:var(--color-primary-dark)}.input{width:100%;padding:.5rem .75rem;border:1px solid var(--color-border);border-radius:var(--radius);font-size:1rem}.input:focus{outline:none;border-color:var(--color-primary);box-shadow:0 0 0 3px #2563eb1a}.grid{display:grid;gap:1rem}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}@media(max-width:768px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}.loading{display:flex;align-items:center;justify-content:center;padding:2rem;color:var(--color-text-muted)}.error{color:var(--color-error);padding:1rem;background:#fef2f2;border-radius:var(--radius)}.data-table-wrapper{overflow-x:auto;border-radius:var(--radius);border:1px solid var(--color-border)}.data-table{width:100%;border-collapse:collapse;min-width:600px}.data-table thead{position:sticky;top:0;background:var(--color-surface);z-index:10}.data-table th{text-align:left;padding:.75rem 1rem;font-weight:600;font-size:.875rem;color:var(--color-text-muted);border-bottom:2px solid var(--color-border);white-space:nowrap}.data-table th.sortable{cursor:pointer;-webkit-user-select:none;user-select:none}.data-table th.sortable:hover{color:var(--color-primary)}.data-table th .sort-icon{margin-left:.25rem;font-size:.75rem}.data-table td{padding:.75rem 1rem;border-bottom:1px solid var(--color-border)}.data-table tbody tr:nth-child(2n){background:var(--color-bg)}.data-table tbody tr:hover{background:var(--color-primary-light)}.data-table .price-cell{font-weight:700;font-size:1.125rem;white-space:nowrap}.data-table .price-lowest{color:var(--color-success)}.data-table .price-highest{color:var(--color-error)}.price-change{display:inline-flex;align-items:center;gap:.25rem;font-size:.75rem;font-weight:500;margin-left:.5rem}.price-change.up{color:var(--color-error)}.price-change.down{color:var(--color-success)}.back-to-top{position:fixed;bottom:2rem;right:2rem;width:48px;height:48px;border-radius:50%;background:var(--color-primary);color:#fff;border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;box-shadow:var(--shadow-md);transition:transform .2s,opacity .2s;z-index:100}.back-to-top:hover{transform:scale(1.1)}.back-to-top.hidden{opacity:0;pointer-events:none}.load-more{display:flex;justify-content:center;margin-top:1.5rem}.store-cards-mobile{display:none}@media(max-width:768px){.data-table-wrapper{display:none}.store-cards-mobile{display:block}}.store-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);padding:1rem;margin-bottom:.75rem}.store-card.lowest{border-color:var(--color-success);background:#22c55e0d}.store-card-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:.75rem}.store-card-name{font-weight:600}.store-card-chain{font-size:.875rem;color:var(--color-text-muted)}.store-card-price{font-size:1.5rem;font-weight:700;color:var(--color-primary)}.store-card-price.lowest{color:var(--color-success)}.store-card-stats{display:flex;gap:1rem;font-size:.75rem;color:var(--color-text-muted);flex-wrap:wrap}.btn-secondary{background:var(--color-surface);color:var(--color-text);border:1px solid var(--color-border)}.btn-secondary:hover{background:var(--color-bg)}.btn-sm{padding:.375rem .75rem;font-size:.875rem}