:root { --brand: #4f46e5; --bg: #f8fafc; --text: #0f172a; --muted: #64748b; --border: #e2e8f0; }
* { box-sizing: border-box; }
body { margin: 0; font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; background: var(--bg); color: var(--text); }
.container { max-width: 960px; margin: 0 auto; padding: 0 16px; }
a { color: inherit; text-decoration: none; }

.site-header { background: #fff; border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 60px; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 18px; }
.brand-logo { width: 32px; height: 32px; border-radius: 8px; object-fit: cover; }
.cart-link { font-size: 14px; font-weight: 600; position: relative; }
.badge { background: var(--brand); color: #fff; font-size: 11px; padding: 1px 6px; border-radius: 999px; margin-left: 4px; }

.flash { padding: 12px 16px; border-radius: 10px; margin: 16px 0; font-size: 14px; }
.flash-success { background: #dcfce7; color: #166534; }
.flash-error { background: #fee2e2; color: #991b1b; }
.flash-info { background: #dbeafe; color: #1e40af; }

.hero { padding: 32px 0 16px; }
.hero h1 { font-size: 24px; margin: 0 0 4px; }
.hero p { color: var(--muted); margin: 0; }

.categories-row { display: flex; gap: 8px; overflow-x: auto; padding: 16px 0; }
.category-pill { flex: none; padding: 8px 16px; border-radius: 999px; background: #fff; border: 1px solid var(--border); font-size: 13px; font-weight: 600; white-space: nowrap; }
.category-pill.active { background: var(--brand); color: #fff; border-color: var(--brand); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 14px; padding-bottom: 32px; }
.card { background: #fff; border-radius: 16px; overflow: hidden; border: 1px solid var(--border); box-shadow: 0 1px 2px rgba(0,0,0,.03); }
.card img { width: 100%; aspect-ratio: 1; object-fit: cover; background: #f1f5f9; }
.card-body { padding: 10px 12px 12px; }
.card-title { font-size: 14px; font-weight: 600; margin: 0 0 4px; line-height: 1.3; }
.card-price { font-size: 15px; font-weight: 700; color: var(--brand); }

.product-photo { width: 100%; border-radius: 16px; aspect-ratio: 1; object-fit: cover; background: #f1f5f9; }
.product-title { font-size: 20px; font-weight: 700; margin: 16px 0 4px; }
.product-price { font-size: 20px; font-weight: 700; color: var(--brand); margin-bottom: 12px; }
.product-desc { color: var(--muted); font-size: 14px; line-height: 1.6; white-space: pre-wrap; }

.btn { display: inline-block; width: 100%; text-align: center; padding: 13px; border-radius: 12px; background: var(--brand); color: #fff; font-weight: 700; font-size: 15px; border: none; cursor: pointer; }
.btn:disabled { opacity: .5; }
.btn-outline { background: #fff; color: var(--brand); border: 2px solid var(--brand); }
.btn-danger { background: #fff; color: #dc2626; }
.btn-sm { width: auto; padding: 6px 14px; font-size: 13px; border-radius: 8px; }

.stack { display: flex; flex-direction: column; gap: 12px; padding: 20px 0; }

input[type=text], input[type=number], input[type=email], input[type=password], input[type=url], textarea, select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--border); border-radius: 12px; font-size: 15px; background: #fff; color: var(--text);
}
label { font-size: 13px; font-weight: 600; color: var(--muted); display: block; margin-bottom: 4px; }
.field { margin-bottom: 12px; }

.cart-row { display: flex; gap: 12px; align-items: center; background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 12px; }
.cart-row img { width: 56px; height: 56px; object-fit: cover; border-radius: 10px; background: #f1f5f9; }
.qty-controls { display: flex; align-items: center; gap: 8px; }
.qty-controls button { width: 28px; height: 28px; border-radius: 8px; border: 1px solid var(--border); background: #fff; font-size: 16px; }

.summary-card { background: #fff; border-radius: 16px; padding: 16px; border: 1px solid var(--border); font-size: 14px; }
.summary-row { display: flex; justify-content: space-between; padding: 4px 0; }
.summary-total { font-weight: 700; font-size: 16px; border-top: 1px solid var(--border); margin-top: 8px; padding-top: 8px; }

.payment-option { display: block; width: 100%; text-align: left; background: #fff; border: 2px solid transparent; border-radius: 16px; padding: 14px; box-shadow: 0 1px 2px rgba(0,0,0,.03); margin-bottom: 10px; cursor: pointer; }
.payment-option.selected { border-color: var(--brand); }
.payment-option-top { display: flex; justify-content: space-between; align-items: center; }
.payment-logo { width: 28px; height: 28px; border-radius: 6px; object-fit: contain; background: #f8fafc; border: 1px solid var(--border); vertical-align: middle; margin-right: 8px; }
.pill { font-size: 10px; text-transform: uppercase; background: #f1f5f9; padding: 2px 8px; border-radius: 999px; }
.scanner-img { margin-top: 10px; width: 160px; border-radius: 12px; }

.support-links { display: flex; gap: 10px; flex-wrap: wrap; padding: 8px 0 24px; }
.support-links a { font-size: 13px; background: #fff; border: 1px solid var(--border); padding: 6px 12px; border-radius: 999px; }

.site-footer { text-align: center; padding: 24px 0; color: var(--muted); font-size: 13px; }

/* ---- Admin ---- */
.admin-wrap { display: flex; min-height: 100vh; }
.admin-sidebar { width: 210px; background: #0f172a; color: #fff; flex: none; padding: 20px 0; }
.admin-sidebar a { display: block; padding: 12px 20px; color: #cbd5e1; font-size: 14px; font-weight: 600; }
.admin-sidebar a.active, .admin-sidebar a:hover { background: #1e293b; color: #fff; }
.admin-sidebar .brand { color: #fff; padding: 0 20px 16px; font-size: 16px; }
.admin-main { flex: 1; padding: 24px; max-width: 900px; }
.admin-card { background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 16px; margin-bottom: 14px; }
.admin-row { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.admin-login-wrap { max-width: 360px; margin: 60px auto; }
.thumb-sm { width: 32px; height: 32px; border-radius: 6px; object-fit: cover; border: 1px solid var(--border); background: #f8fafc; }
.toggle-on { background: #dcfce7; color: #166534; }
.toggle-off { background: #f1f5f9; color: #64748b; }
.file-box { border: 1px dashed var(--border); border-radius: 12px; padding: 10px; margin-bottom: 10px; font-size: 13px; }
.mobile-topbar { display: none; }

@media (max-width: 720px) {
  .admin-wrap { flex-direction: column; }
  .admin-sidebar { width: 100%; display: flex; overflow-x: auto; padding: 10px; }
  .admin-sidebar .brand { display: none; }
  .admin-sidebar a { padding: 8px 14px; white-space: nowrap; }
  .admin-main { padding: 16px; }
}