:root {
  --vivid: #117ebe;
  --azure: #2f5b6d;
  --azure-dark: #1e3d4d;
  --azure-deeper: #132630;
  --white: #ffffff;
  --off-white: #f4f8fb;
  --light-blue: #e8f4fc;
  --mid: #6b9ab8;
  --text-dark: #0d1f2b;
  --text-muted: #4a6a7d;
  --text-light: #8faabb;
  --border: rgba(47,91,109,0.15);
  --danger: #ef4444;
  --success: #22c55e;
  --warning: #f59e0b;
}
* , *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--off-white);
  color: var(--text-dark);
  line-height: 1.5;
}
a { color: var(--vivid); text-decoration: none; }
.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

.shop-nav {
  background: var(--azure-deeper);
  padding: 16px 0;
}
.shop-nav .container { display: flex; align-items: center; justify-content: space-between; }
.shop-nav .brand { color: var(--white); font-weight: 700; font-size: 18px; letter-spacing: .02em; }
.shop-nav .brand span { color: var(--vivid); }
.shop-nav .links { display: flex; gap: 20px; align-items: center; }
.shop-nav .links a { color: var(--light-blue); font-size: 14px; }
.shop-nav .links a:hover { color: var(--white); }
.shop-nav .cart-badge {
  background: var(--vivid); color: var(--white); border-radius: 999px;
  padding: 2px 9px; font-size: 12px; margin-left: 6px;
}

.page-header { padding: 40px 0 24px; }
.page-header h1 { font-size: 28px; color: var(--azure-deeper); }
.page-header p { color: var(--text-muted); margin-top: 6px; }

.store-tabs { display: flex; gap: 8px; margin: 20px 0 32px; }
.store-tabs a {
  padding: 8px 18px; border-radius: 999px; border: 1px solid var(--border);
  color: var(--text-muted); font-size: 14px; background: var(--white);
}
.store-tabs a.active { background: var(--vivid); color: var(--white); border-color: var(--vivid); }

.product-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 20px; padding-bottom: 60px;
}
.product-card {
  background: var(--white); border: 1px solid var(--border); border-radius: 12px;
  overflow: hidden; display: flex; flex-direction: column; transition: box-shadow .2s, transform .2s;
}
.product-card:hover { box-shadow: 0 8px 24px rgba(19,38,48,0.08); transform: translateY(-2px); }
.product-card .thumb {
  aspect-ratio: 1/1; background: var(--light-blue); display: flex; align-items: center;
  justify-content: center; overflow: hidden;
}
.product-card .thumb img { width: 100%; height: 100%; object-fit: cover; }
.product-card .thumb .placeholder { color: var(--mid); font-size: 13px; }
.product-card .body { padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.product-card .name { font-weight: 600; font-size: 15px; color: var(--azure-deeper); }
.product-card .price { color: var(--vivid); font-weight: 700; font-size: 16px; }
.product-card .stock { font-size: 12px; color: var(--text-light); }
.product-card .btn { margin-top: auto; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  background: var(--vivid); color: var(--white); border: none; border-radius: 8px;
  padding: 10px 18px; font-size: 14px; font-weight: 600; cursor: pointer;
}
.btn:hover { background: #0d6a9e; }
.btn.secondary { background: var(--white); color: var(--vivid); border: 1px solid var(--vivid); }
.btn.danger { background: var(--danger); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-block { width: 100%; }

.empty-state { padding: 60px 0; text-align: center; color: var(--text-muted); }

.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-size: 13px; font-weight: 600; color: var(--text-dark); margin-bottom: 6px; }
.form-group input, .form-group select, .form-group textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 14px; font-family: inherit; background: var(--white);
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: none; border-color: var(--vivid);
}
.form-card {
  background: var(--white); border: 1px solid var(--border); border-radius: 12px;
  padding: 28px; max-width: 480px; margin: 0 auto;
}

.alert { padding: 12px 16px; border-radius: 8px; font-size: 14px; margin-bottom: 18px; }
.alert.success { background: rgba(34,197,94,0.12); color: #15803d; }
.alert.error { background: rgba(239,68,68,0.12); color: #b91c1c; }
.alert.info { background: rgba(17,126,190,0.1); color: var(--azure-dark); }

.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: 12px; font-weight: 600; }
.badge.pending { background: rgba(245,158,11,0.15); color: #b45309; }
.badge.partial { background: rgba(17,126,190,0.15); color: var(--vivid); }
.badge.paid { background: rgba(34,197,94,0.15); color: #15803d; }
.badge.cancelled { background: rgba(239,68,68,0.15); color: #b91c1c; }
.badge.new { background: rgba(17,126,190,0.15); color: var(--vivid); }
.badge.read { background: rgba(107,154,184,0.15); color: var(--text-muted); }

table { width: 100%; border-collapse: collapse; background: var(--white); border-radius: 12px; overflow: hidden; }
table th, table td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: 14px; }
table th { background: var(--light-blue); color: var(--azure-dark); font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
table tr:last-child td { border-bottom: none; }

.admin-shell { display: flex; min-height: 100vh; }
.admin-sidebar { width: 220px; background: var(--azure-deeper); padding: 24px 0; flex-shrink: 0; }
.admin-sidebar .brand { color: var(--white); font-weight: 700; padding: 0 24px 24px; font-size: 16px; }
.admin-sidebar a {
  display: block; padding: 10px 24px; color: var(--light-blue); font-size: 14px;
}
.admin-sidebar a:hover, .admin-sidebar a.active { background: rgba(255,255,255,0.06); color: var(--white); }
.admin-main { flex: 1; padding: 32px 40px; }
.admin-topbar { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.admin-topbar h1 { font-size: 22px; }

.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 32px; }
.stat-card { background: var(--white); border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px; }
.stat-card .label { font-size: 12px; color: var(--text-muted); text-transform: uppercase; letter-spacing: .03em; }
.stat-card .value { font-size: 26px; font-weight: 700; color: var(--azure-deeper); margin-top: 4px; }

.pay-box {
  background: var(--azure-deeper); color: var(--white); border-radius: 12px; padding: 28px;
  text-align: center; margin: 24px 0;
}
.pay-box .amount { font-size: 32px; font-weight: 700; color: var(--vivid); margin: 10px 0; }
.pay-box .row { display: flex; justify-content: space-between; padding: 8px 0; border-bottom: 1px solid rgba(255,255,255,0.1); font-size: 14px; }
.pay-box .row:last-child { border-bottom: none; }
.pay-box .label { color: var(--text-light); }

.qty-input { width: 60px; text-align: center; }
.cart-table td { vertical-align: middle; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.mt-8 { margin-top: 8px; } .mt-16 { margin-top: 16px; } .mt-24 { margin-top: 24px; }