* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: system-ui, Arial, sans-serif;
  line-height: 1.4;
  color: #222;
  background: #fafafa;
}
.container { max-width: 1000px; margin: 0 auto; padding: 0 16px; }

/* Header */
.site-header { background: #fff; border-bottom: 1px solid #e3e3e3; position: sticky; top: 0; }
.header-inner { display: flex; align-items: center; justify-content: space-between; }
.logo { margin: 0; padding: 12px 0; font-size: 20px; }
.main-nav a { margin-right: 12px; font-size: 14px; text-decoration: none; color: #333; }
.main-nav a:last-child { margin-right: 0; }
.main-nav a:hover { text-decoration: underline; }

/* Page layout: catalog + cart */
.page { display: grid; grid-template-columns: 1fr 320px; gap: 16px; padding: 16px 0; }
@media (max-width: 900px) { .page { grid-template-columns: 1fr; } }

/* Headings */
.catalog h2, .cart h2, .checkout h2 { margin-top: 0; }

/* Products grid */
.product-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
@media (max-width: 900px) { .product-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .product-grid { grid-template-columns: 1fr; } }

.product-card {
  background: #fff; border: 1px solid #e3e3e3; border-radius: 8px;
  padding: 12px; display: flex; flex-direction: column;
}
.flag-preview { position: relative; }
.flag-img { width: 100%; height: 120px; object-fit: cover; border-radius: 6px; }
.flag-badge {
  position: absolute; top: 6px; right: 6px;
  font-size: 18px; background: #fff; border: 1px solid #ddd;
  padding: 2px 6px; border-radius: 12px;
}
.product-title { font-size: 16px; margin: 6px 0; }
.product-price { font-weight: 600; margin: 6px 0 10px; }

.hidden { display: none; }

/* Buttons */
/* the base class must go before the varian classes */
.btn {
  text-decoration: none;
  display: inline-block; padding: 8px 12px; border: 1px solid #333;
  background: #fff; cursor: pointer; border-radius: 6px;
}

.btn-primary{
  background: rgb(195, 253, 108);
  border-color: lightgreen;
  color: rgb(0, 0, 0);
}
.btn-primary:hover {background: #77e955;}

.btn-secondary {
  margin: 10px auto; 
  display: block;
  background: rgb(164, 228, 230);
  border-color: lightskyblue;
  color: #1a2030;
}
.btn-secondary:hover { background: #e0e7ff;}

.btn-checkout {
  display: block; text-align: center; margin-top: 10px;
  background: #4f46e5; color: #fff; border-color: #4f46e5;
}
.btn-checkout:hover { background: #4338ca; }

/* Cart */
.cart {
  background: #fff; border: 1px solid #e3e3e3; border-radius: 8px;
  padding: 12px; height: fit-content;
}
.cart-items { list-style: none; margin: 0; padding: 0; min-height: 40px; }
.cart-items .empty { color: #666; padding: 6px 0; font-style: italic; }
.cart-summary {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 8px; padding-top: 8px; border-top: 1px solid #eee;
}

/* Checkout form */
.section-sep{
  border: 0;
  border-top: 1px solid #757575;
  margin: 24px 0;
}
.checkout { padding: 16px 0 32px; }
.order-form { max-width: 520px; }
.form-row { display: flex; flex-direction: column; margin-bottom: 10px; }
.form-row label { margin-bottom: 4px; font-size: 14px; }
.form-row input {
  padding: 8px; border: 1px solid #ccc; border-radius: 6px; background: #fff;
}

/* Footer */
.site-footer { border-top: 1px solid #e3e3e3; padding: 16px 0; text-align: center; background: #fff; }