:root {
  --brand: #4338ca;
  --brand-dark: #312a8a;
  --bg: #faf9f7;
  --surface: #ffffff;
  --text: #1f1e1c;
  --text-muted: #6b6a67;
  --border: #e8e6e1;
  --success: #147a54;
  --success-bg: #e1f5ee;
  --warning: #92620a;
  --warning-bg: #faeeda;
  --danger: #a3311d;
  --danger-bg: #faece7;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(20, 20, 15, 0.04), 0 8px 24px rgba(20, 20, 15, 0.06);
}

* { box-sizing: border-box; }

body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  margin: 0;
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
header nav { display: flex; align-items: center; gap: 0.25rem; }
header nav a {
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.5rem 0.9rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}
header nav a:hover { background: var(--bg); color: var(--text); }
.brand {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--text) !important;
  text-decoration: none;
  letter-spacing: -0.01em;
}
.brand::before { content: "🛍️ "; }

main { padding: 2rem; max-width: 1080px; margin: 0 auto; }

h1 { font-size: 1.6rem; font-weight: 700; letter-spacing: -0.01em; margin: 0 0 1.5rem; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 1.25rem; }

.card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform 0.15s, box-shadow 0.15s;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 2px 4px rgba(20,20,15,.06), 0 16px 32px rgba(20,20,15,.09); }

.card-media {
  aspect-ratio: 1 / 1;
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
}
.card-media img { width: 100%; height: 100%; object-fit: cover; display: block; }

.card-body { padding: 1rem 1.1rem 1.1rem; display: flex; flex-direction: column; gap: 0.5rem; flex: 1; }
.card-body h3 { margin: 0; font-size: 1.02rem; font-weight: 600; }
.card-body .desc { margin: 0; color: var(--text-muted); font-size: 0.88rem; flex: 1; }
.price { font-weight: 700; font-size: 1.1rem; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  width: fit-content;
}
.badge.in-stock { color: var(--success); background: var(--success-bg); }
.badge.low-stock { color: var(--warning); background: var(--warning-bg); }
.badge.out-of-stock { color: var(--danger); background: var(--danger-bg); }

table { width: 100%; border-collapse: collapse; margin: 1rem 0; background: var(--surface); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
th, td { text-align: left; padding: 0.75rem 1rem; border-bottom: 1px solid var(--border); }
th { color: var(--text-muted); font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.03em; font-weight: 600; }
tr:last-child td { border-bottom: none; }
td.product-cell { display: flex; align-items: center; gap: 0.7rem; }
td.product-cell img { width: 40px; height: 40px; border-radius: 8px; object-fit: cover; background: var(--bg); }

.alert { background: var(--danger-bg); color: var(--danger); border: 1px solid #f0c8bd; padding: 1rem; border-radius: var(--radius); margin-bottom: 1.5rem; font-weight: 500; }
.ok { color: var(--success); font-weight: 700; }
.fail { color: var(--danger); font-weight: 700; }
.hint { color: var(--text-muted); font-size: 0.88rem; }

form { display: flex; gap: 0.5rem; margin-top: 0.5rem; align-items: center; }
input[type=number], input[type=email], input[type=text] {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 0.7rem;
  font-size: 0.92rem;
  font-family: inherit;
  background: var(--surface);
  color: var(--text);
}
input[type=number] { width: 4.2rem; }
input[type=number]:focus, input[type=email]:focus, input[type=text]:focus {
  outline: 2px solid var(--brand); outline-offset: 1px; border-color: var(--brand);
}

button, .btn {
  cursor: pointer;
  border: none;
  background: var(--brand);
  color: #fff;
  padding: 0.55rem 1.1rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.92rem;
  font-family: inherit;
  transition: background 0.15s;
}
button:hover, .btn:hover { background: var(--brand-dark); }
button:disabled { background: var(--border); color: var(--text-muted); cursor: not-allowed; }

a { color: var(--brand); }
a.plain-link { color: var(--text-muted); font-size: 0.9rem; text-decoration: none; }
a.plain-link:hover { color: var(--text); text-decoration: underline; }

.checkout-form { flex-direction: column; align-items: flex-start; max-width: 360px; }
.checkout-form input { width: 100%; }