:root,
[data-theme="red-gold"] {
  --primary: #a3213e;
  --primary-dark: #7a1830;
  --accent: #d1a256;
  --accent-contrast: var(--dark);
  --dark: #201f1f;
  --muted: #6b6b6b;
  --bg: #faf8f5;
  --card-bg: #ffffff;
  --border: #e7e1d8;
  --radius: 10px;
  --shadow: 0 2px 10px rgba(0,0,0,0.06);
  --hero-gradient: linear-gradient(135deg, var(--primary), var(--primary-dark));
  --hero-text: #f3d9c9;
  --logo-src: url('/uploads/logo.png');
}

[data-theme="blue-white"] {
  --primary: #14539a;
  --primary-dark: #0d3866;
  --accent: #4fa8dc;
  --accent-contrast: #ffffff;
  --dark: #182430;
  --muted: #5b6b7a;
  --bg: #f5f9fd;
  --card-bg: #ffffff;
  --border: #dbe6f0;
  --radius: 10px;
  --shadow: 0 2px 10px rgba(20,83,154,0.08);
  --hero-gradient: linear-gradient(135deg, var(--primary), var(--primary-dark));
  --hero-text: #d7ebfb;
  --logo-src: url('/uploads/logo-blue.png');
}

* { transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease; }

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--dark);
  line-height: 1.5;
}

a { color: inherit; text-decoration: none; }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header */
header.site-header {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 50;
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  max-width: 1180px;
  margin: 0 auto;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.brand img { height: 46px; width: auto; }
.brand-text {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--primary);
}
.brand-text span { display: block; font-size: 0.7rem; letter-spacing: 2px; color: var(--accent); font-weight: 600; }

nav.main-nav { display: flex; gap: 22px; align-items: center; }
nav.main-nav a {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--dark);
  padding: 8px 2px;
  border-bottom: 2px solid transparent;
  transition: 0.15s;
}
nav.main-nav a:hover { color: var(--primary); border-bottom-color: var(--accent); }

/* Theme switcher */
.theme-switcher {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 4px;
  margin-left: 6px;
}
.theme-switcher button {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  padding: 0;
  line-height: 0;
}
.theme-switcher button[data-set-theme="red-gold"] {
  background: linear-gradient(135deg, #a3213e, #d1a256);
}
.theme-switcher button[data-set-theme="blue-white"] {
  background: linear-gradient(135deg, #14539a, #ffffff);
}
.theme-switcher button.active { border-color: var(--dark); }
.theme-switcher button:hover { transform: scale(1.08); }

/* Hero */
.hero {
  background: var(--hero-gradient);
  color: #fff;
  padding: 60px 0 70px;
  text-align: center;
}
.hero h1 { font-size: 2.2rem; margin: 0 0 12px; }
.hero p { color: var(--hero-text); max-width: 640px; margin: 0 auto; font-size: 1.05rem; }

/* Breadcrumb */
.breadcrumb {
  font-size: 0.85rem;
  color: var(--muted);
  margin: 20px 0 10px;
}
.breadcrumb a { color: var(--primary); font-weight: 600; }
.breadcrumb .sep { margin: 0 6px; color: #bbb; }

/* Section titles */
.section-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 40px 0 6px;
  color: var(--dark);
}
.section-sub { color: var(--muted); margin-bottom: 24px; }

/* Grid of cards */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
  margin-bottom: 50px;
}
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.15s, box-shadow 0.15s;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 8px 24px rgba(0,0,0,0.1); }
.card-img {
  height: 190px;
  background: #f0ece5 center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #b7ad9c;
  font-size: 0.85rem;
}
.card-img img { width: 100%; height: 100%; object-fit: cover; }
.card-body { padding: 16px 18px 20px; flex: 1; display: flex; flex-direction: column; }
.card-body h3 { margin: 0 0 6px; font-size: 1.08rem; color: var(--dark); }
.card-body p { margin: 0 0 14px; color: var(--muted); font-size: 0.9rem; flex: 1; }
.card-cta {
  align-self: flex-start;
  font-weight: 700;
  color: var(--primary);
  font-size: 0.88rem;
}
.card-cta:after { content: ' →'; }

/* Product detail */
.product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; margin: 30px 0 60px; }
@media (max-width: 800px) { .product-detail { grid-template-columns: 1fr; } }
.product-image {
  background: #f0ece5;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 320px;
  display: flex; align-items: center; justify-content: center;
  color: #b7ad9c;
}
.product-image img { width: 100%; height: 100%; object-fit: cover; }
.product-info h1 { font-size: 1.7rem; margin: 0 0 10px; }
.product-price { color: var(--primary); font-weight: 700; font-size: 1.1rem; margin-bottom: 16px; }
.spec-table { width: 100%; border-collapse: collapse; margin: 18px 0; }
.spec-table td { padding: 8px 10px; border-bottom: 1px solid var(--border); font-size: 0.92rem; }
.spec-table td:first-child { font-weight: 600; color: var(--muted); width: 40%; }

.btn {
  display: inline-block;
  background: var(--primary);
  color: #fff !important;
  padding: 11px 22px;
  border-radius: 6px;
  font-weight: 700;
  border: none;
  cursor: pointer;
  font-size: 0.95rem;
}
.btn:hover { background: #841932; }
.btn-secondary { background: var(--accent); color: var(--dark) !important; }
.btn-outline { background: transparent; border: 1.5px solid var(--primary); color: var(--primary) !important; }
.btn-danger { background: #b3261e; }
.btn-sm { padding: 6px 12px; font-size: 0.82rem; }

/* Forms */
.form-box { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; max-width: 520px; }
.form-group { margin-bottom: 16px; }
.form-group label { display: block; font-weight: 600; font-size: 0.88rem; margin-bottom: 6px; }
.form-group input, .form-group textarea, .form-group select {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.92rem;
  font-family: inherit;
}
.form-group textarea { resize: vertical; min-height: 90px; }
.alert { padding: 12px 16px; border-radius: 6px; margin-bottom: 16px; font-size: 0.9rem; }
.alert-success { background: #e6f4ea; color: #1e7b34; border: 1px solid #b7e2c1; }
.alert-error { background: #fdecea; color: #b3261e; border: 1px solid #f5c2be; }

/* Footer */
footer.site-footer {
  background: var(--dark);
  color: #cfcfcf;
  padding: 40px 0 24px;
  margin-top: 60px;
}
footer.site-footer h4 { color: #fff; margin: 0 0 12px; font-size: 1rem; }
footer.site-footer a { color: #cfcfcf; }
footer.site-footer a:hover { color: var(--accent); }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 30px; }
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr; } }
.footer-bottom { text-align: center; margin-top: 30px; padding-top: 20px; border-top: 1px solid #3a3a3a; font-size: 0.82rem; color: #888; }

/* Admin layout */
.admin-wrap { display: flex; min-height: 100vh; }
.admin-sidebar {
  width: 230px;
  background: var(--dark);
  color: #eee;
  padding: 20px 0;
  flex-shrink: 0;
}
.admin-sidebar .brand-text { color: #fff; padding: 0 20px 20px; border-bottom: 1px solid #3a3a3a; margin-bottom: 10px; }
.admin-sidebar .brand-text span { color: var(--accent); }
.admin-sidebar a {
  display: block;
  padding: 11px 20px;
  font-size: 0.92rem;
  color: #ccc;
}
.admin-sidebar a:hover, .admin-sidebar a.active { background: rgba(255,255,255,0.06); color: #fff; border-left: 3px solid var(--accent); }
.admin-main { flex: 1; padding: 30px 34px; }
.admin-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 24px; }
.admin-header h1 { margin: 0; font-size: 1.5rem; }

.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 16px; margin-bottom: 30px; }
.stat-card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 18px; }
.stat-card .num { font-size: 1.8rem; font-weight: 700; color: var(--primary); }
.stat-card .label { color: var(--muted); font-size: 0.85rem; }

table.admin-table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
table.admin-table th, table.admin-table td { padding: 12px 14px; border-bottom: 1px solid var(--border); text-align: left; font-size: 0.9rem; }
table.admin-table th { background: #f6f2ec; font-weight: 700; color: var(--dark); }
table.admin-table tr:last-child td { border-bottom: none; }
.table-thumb { width: 48px; height: 48px; object-fit: cover; border-radius: 6px; background: #f0ece5; }
.actions-cell { display: flex; gap: 8px; }

.login-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--bg); }
.login-box { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); padding: 34px; width: 100%; max-width: 380px; box-shadow: var(--shadow); }
.login-box h2 { text-align: center; color: var(--primary); margin-top: 0; }

.badge { display: inline-block; padding: 3px 9px; border-radius: 20px; font-size: 0.75rem; font-weight: 700; }
.badge-active { background: #e6f4ea; color: #1e7b34; }
.badge-inactive { background: #f1f1f1; color: #888; }

.empty-state { text-align: center; padding: 60px 20px; color: var(--muted); }