:root {
  --bg: #0f172a;
  --panel: #111827;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --accent: #22d3ee;
  --border: #334155;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}
.container { width: min(1120px, 95%); margin: 0 auto; }
.site-header, .site-footer { background: var(--panel); border-bottom: 1px solid var(--border); }
.site-footer { border-top: 1px solid var(--border); border-bottom: 0; padding: 1.2rem 0; margin-top: 2rem; }
.nav-wrap { display: flex; justify-content: space-between; align-items: center; padding: 1rem 0; }
.brand { color: var(--accent); text-decoration: none; font-weight: bold; font-size: 1.2rem; }
.nav-links a { color: var(--text); text-decoration: none; margin-left: 1rem; }
.main-content { padding: 2rem 0; }
.hero { background: linear-gradient(135deg, #1e293b, #0f172a); padding: 3rem 1rem; border-radius: 12px; text-align: center; margin-bottom: 2rem; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.card { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.card img { width: 100%; height: 180px; object-fit: cover; }
.card-body { padding: 1rem; }
.price { color: var(--accent); font-weight: bold; }
.add-product-card { border: 2px dashed var(--accent); cursor: pointer; display: flex; align-items: center; justify-content: center; min-height: 220px; }
.add-product-card .card-body { text-align: center; }
.add-product-card button { margin-top: 0.5rem; }
.filters { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 1.2rem; }
.filter-btn { padding: 0.5rem 0.8rem; border-radius: 999px; background: #1f2937; color: var(--text); text-decoration: none; }
.filter-btn.active { background: var(--accent); color: #0f172a; }
.contact-form { display: flex; flex-direction: column; gap: 0.5rem; max-width: 560px; }
.contact-form input, .contact-form textarea, .contact-form select { padding: 0.7rem; border-radius: 8px; border: 1px solid var(--border); background: #020617; color: var(--text); }
.contact-form button { padding: 0.8rem 1rem; border: none; border-radius: 8px; background: var(--accent); color: #0f172a; cursor: pointer; }
.success { color: #4ade80; }
.error { color: #f87171; }
.auth-card { max-width: 480px; margin: 0 auto; }
.dashboard-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; }
@media (max-width: 700px) { .nav-wrap { flex-direction: column; gap: 0.8rem; } }