/* Smart Fog parts store — one small stylesheet, system fonts, no framework. */
:root{--ink:#0f172a;--muted:#64748b;--line:#e2e8f0;--bg:#f8fafc;--card:#fff;--brand:#0ea5e9;--brand-d:#0369a1;--ok:#15803d;--warn:#b45309;--r:12px}
*{box-sizing:border-box}html,body{margin:0}body{font:15px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;color:var(--ink);background:var(--bg)}
a{color:var(--brand-d);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1120px;margin:0 auto;padding:0 16px}.row{display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}.top .row{min-height:64px}
.brand{display:flex;align-items:center;gap:8px;color:var(--ink);font-size:17px;white-space:nowrap}.brand:hover{text-decoration:none}
.logo{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:9px;background:var(--brand);color:#fff;font-weight:800;font-size:14px}
.search{flex:1;display:flex;min-width:220px;max-width:520px}.search input{flex:1;border:1px solid var(--line);border-right:0;border-radius:10px 0 0 10px;padding:10px 12px;font:inherit}
.search button{border:0;background:var(--ink);color:#fff;border-radius:0 10px 10px 0;padding:0 16px;font:inherit;cursor:pointer}
.search.big input{padding:14px 16px;font-size:16px}.search.big .btn{border-radius:0 10px 10px 0}
.nav{display:flex;gap:18px;align-items:center;margin-left:auto}.nav a{color:var(--ink)}
.badge{display:inline-block;min-width:20px;padding:0 6px;border-radius:10px;background:var(--brand);color:#fff;font-size:12px;text-align:center}
main.wrap{padding-top:24px;padding-bottom:48px;min-height:60vh}h1{font-size:26px;line-height:1.25;margin:0 0 10px}h2{font-size:19px;margin:28px 0 12px}h3{margin:0 0 8px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:18px}.muted{color:var(--muted)}.small{font-size:13px}
.hero{padding:32px;background:linear-gradient(135deg,#e0f2fe,#fff)}.hero p{max-width:640px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}
.item{display:flex;flex-direction:column;gap:6px}.item .name{font-weight:600;color:var(--ink)}.item .sku{font-size:12px;color:var(--muted)}
.item .buy{margin-top:auto;display:flex;align-items:center;justify-content:space-between;gap:8px}.price{font-weight:700}.price.big{font-size:28px}
.pill{background:#ecfeff;color:#0e7490;border-radius:6px;padding:1px 6px;font-size:11px;font-weight:600}
.btn{display:inline-block;border:0;background:var(--brand);color:#fff;border-radius:10px;padding:10px 16px;font:inherit;font-weight:600;cursor:pointer}
.btn:hover{background:var(--brand-d);text-decoration:none}.btn.sm{padding:6px 10px;font-size:13px}.btn.wide{width:100%;margin-top:10px}
.btn.ghost{background:#fff;color:var(--brand-d);border:1px solid var(--line)}.btn[disabled]{opacity:.55;cursor:default}
.fams{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:14px}.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{display:inline-block;border:1px solid var(--line);border-radius:999px;padding:4px 10px;font-size:13px;background:#fff;color:var(--ink)}.chip:hover{border-color:var(--brand);text-decoration:none}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:8px}
.pdp{display:grid;grid-template-columns:1fr 280px;gap:24px}.buybox{display:flex;flex-direction:column;gap:12px;border-left:1px solid var(--line);padding-left:24px}
.buybox input{width:80px;padding:6px 8px;border:1px solid var(--line);border-radius:8px;font:inherit;margin-left:6px}
label{display:block;font-size:13px;color:var(--muted);margin:8px 0}label input{display:block;width:100%;margin-top:4px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;font:inherit;color:var(--ink)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:12px}.three{display:grid;grid-template-columns:2fr 1fr 1fr;gap:12px}
.checkout{display:grid;grid-template-columns:1fr 340px;gap:20px;align-items:start}.summary{position:sticky;top:84px}
.paygrid{display:grid;grid-template-columns:1fr 340px;gap:20px;align-items:start}.pay{position:sticky;top:84px}
table.lines{width:100%;border-collapse:collapse;margin:12px 0}table.lines td{padding:8px 4px;border-bottom:1px solid var(--line)}
td.c{text-align:center;width:60px}td.r{text-align:right;white-space:nowrap}tr.sub td{color:var(--muted);border-bottom:0}tr.tot td{font-weight:700;border-bottom:0}
.opt{display:flex;align-items:center;gap:8px;padding:10px;border:1px solid var(--line);border-radius:10px;margin:8px 0;color:var(--ink);font-size:14px}
.opt span{flex:1}.opt input[type=number]{width:110px;display:inline-block;margin:0}
.ok{color:var(--ok);font-weight:700}.warn{color:var(--warn);font-weight:600}.big{font-size:22px}.center{text-align:center;max-width:620px;margin:40px auto}.narrow{max-width:460px;margin:24px auto}
.cart .ln{display:grid;grid-template-columns:1fr 90px 90px 30px;gap:10px;align-items:center;padding:10px 0;border-bottom:1px solid var(--line)}
.cart .ln input{width:70px;padding:6px;border:1px solid var(--line);border-radius:8px}.cart .x{background:none;border:0;color:var(--muted);cursor:pointer;font-size:18px}
.ups{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:10px;margin-top:10px}.up{border:1px dashed var(--line);border-radius:10px;padding:10px;font-size:14px}
.err{color:#b91c1c;margin-top:8px}.order .row{justify-content:space-between}
.foot{border-top:1px solid var(--line);background:#fff;color:var(--muted);font-size:13px}.foot .row{justify-content:space-between;min-height:56px}
@media (max-width:820px){.pdp,.checkout,.paygrid{grid-template-columns:1fr}.buybox{border-left:0;padding-left:0}.summary,.pay{position:static}.nav{gap:12px}.search{order:3;max-width:none;flex-basis:100%}.two,.three{grid-template-columns:1fr}}