:root{
 --primary:#2563EB; --secondary:#1D4ED8; --bg:#F8FAFC; --card:#FFFFFF;
 --text:#0F172A; --success:#16A34A; --warning:#F59E0B; --danger:#DC2626;
 --border:#E2E8F0; --muted:#64748B;
}
.dark{ --bg:#0B1220; --card:#121C2F; --text:#E2E8F0; --border:#1E2A44; --muted:#94A3B8; }
*{box-sizing:border-box} body{margin:0;font-family:Inter,system-ui;background:var(--bg);color:var(--text);transition:.2s}
.container{max-width:1200px;margin:0 auto;padding:0 16px}
.header{position:sticky;top:0;z-index:50;background:var(--card);border-bottom:1px solid var(--border);backdrop-filter:blur(10px)}
.header-inner{display:flex;align-items:center;justify-content:space-between;height:64px;gap:12px}
.logo{display:flex;align-items:center;gap:10px;font-weight:800;font-size:18px;color:var(--primary)}
.btn{padding:10px 16px;border-radius:10px;border:0;cursor:pointer;font-weight:600;transition:.15s}
.btn-primary{background:var(--primary);color:white}
.btn-primary:hover{background:var(--secondary)}
.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text)}
.grid{ display:grid; grid-template-columns:repeat(2,1fr); gap:12px}
@media(min-width:768px){ .grid{grid-template-columns:repeat(3,1fr)} }
@media(min-width:1024px){ .grid{grid-template-columns:repeat(4,1fr)} }
@media(min-width:1280px){ .grid{grid-template-columns:repeat(5,1fr)} }
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;transition:.2s}
.card:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(0,0,0,.08)}
.card img{width:100%;aspect-ratio:1;object-fit:cover;background:#eee}
.card-body{padding:12px}
.price{font-weight:800;color:var(--primary)}
.old{font-size:12px;color:var(--muted);text-decoration:line-through}
.badge{font-size:11px;padding:4px 8px;border-radius:999px;background:var(--bg);border:1px solid var(--border)}
.input{width:100%;padding:12px 14px;border-radius:12px;border:1px solid var(--border);background:var(--card);color:var(--text)}
.skeleton{background:linear-gradient(90deg,var(--border) 25%, var(--bg) 50%, var(--border) 75%);background-size:200% 100%;animation:shim 1.5s infinite}
@keyframes shim{0%{background-position:200% 0}100%{background-position:-200% 0}}
.hero{background:linear-gradient(135deg,#2563EB 0%, #1D4ED8 100%);color:white;padding:48px 0;border-radius:0 0 32px 32px}
.empty{padding:48px;text-align:center;color:var(--muted)}
.nav-link{padding:8px 12px;border-radius:10px;text-decoration:none;color:var(--muted)}
.nav-link.active{color:var(--primary);background:rgba(37,99,235,.1)}
.dark img{opacity:.9}