:root {
  --navy: #14213d;
  --navy-light: #1f3358;
  --accent: #3f6f8f;
  --accent-dark: #2f5670;
  --bg: #f7f8fa;
  --card: #ffffff;
  --text: #1e293b;
  --muted: #64748b;
  --border: #e2e8f0;
  --danger: #b3403f;
  --success: #2f7a4f;
  --radius: 10px;
  --shadow: 0 1px 3px rgba(20, 33, 61, 0.08), 0 1px 2px rgba(20, 33, 61, 0.06);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.55;
}
a { color: var(--accent-dark); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; height: auto; display: block; }

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

/* Header */
.site-header {
  background: var(--navy);
  color: #fff;
  position: sticky;
  top: 0;
  z-index: 50;
}
.site-header .container { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.site-header .logo { display: flex; align-items: center; gap: 10px; }
.site-header .logo img { height: 36px; width: auto; }
.site-header .logo span { font-weight: 700; font-size: 1.15rem; color: #fff; }
.main-nav { display: flex; align-items: center; gap: 22px; }
.main-nav a { color: #dbe4f0; font-weight: 500; font-size: 0.95rem; }
.main-nav a:hover, .main-nav a.active { color: #fff; text-decoration: none; }
.header-actions { display: flex; align-items: center; gap: 16px; }
.header-actions a { color: #fff; }
.cart-badge {
  background: var(--accent); color: #fff; border-radius: 999px; font-size: 0.72rem;
  padding: 1px 6px; margin-left: 4px; font-weight: 700;
}
.nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.6rem; cursor: pointer; }

@media (max-width: 860px) {
  .main-nav { position: absolute; top: 72px; left: 0; right: 0; background: var(--navy-light);
    flex-direction: column; align-items: flex-start; padding: 16px 20px; display: none; gap: 14px; }
  .main-nav.open { display: flex; }
  .nav-toggle { display: block; }
}

/* Footer */
.site-footer { background: var(--navy); color: #b9c4d6; margin-top: 60px; padding: 40px 0 24px; }
.site-footer .container { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 32px; }
.site-footer h4 { color: #fff; font-size: 0.95rem; margin: 0 0 12px; }
.site-footer a { color: #b9c4d6; }
.site-footer a:hover { color: #fff; }
.footer-bottom { text-align: center; margin-top: 30px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,0.1); font-size: 0.82rem; color: #8092ab; }
@media (max-width: 700px) { .site-footer .container { grid-template-columns: 1fr; } }

/* Hero */
.hero { background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 100%); color: #fff; padding: 72px 0; }
.hero h1 { font-size: 2.4rem; margin: 0 0 16px; max-width: 640px; line-height: 1.2; }
.hero p { font-size: 1.1rem; color: #cbd7e8; max-width: 560px; margin: 0 0 28px; }
.btn { display: inline-block; padding: 12px 26px; border-radius: var(--radius); font-weight: 600; font-size: 0.95rem; border: none; cursor: pointer; }
.btn-accent { background: var(--accent); color: #fff; }
.btn-accent:hover { background: var(--accent-dark); text-decoration: none; }
.btn-outline { background: transparent; color: #fff; border: 1px solid rgba(255,255,255,0.5); }
.btn-outline:hover { background: rgba(255,255,255,0.1); text-decoration: none; }
.btn-dark { background: var(--navy); color: #fff; }
.btn-dark:hover { background: var(--navy-light); text-decoration: none; }

/* Sections */
.section { padding: 56px 0; }
.section-title { font-size: 1.7rem; margin: 0 0 8px; color: var(--navy); }
.section-lead { color: var(--muted); margin: 0 0 32px; max-width: 640px; }

/* Cards / grids */
.grid { display: grid; gap: 24px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 960px) { .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius);
  overflow: hidden; box-shadow: var(--shadow); transition: transform .15s ease, box-shadow .15s ease;
}
.card:hover { transform: translateY(-2px); box-shadow: 0 6px 16px rgba(20,33,61,0.12); }
.card-body { padding: 18px; }
.card img { aspect-ratio: 4/3; object-fit: cover; width: 100%; background: var(--border); }
.card h3 { font-size: 1.05rem; margin: 0 0 6px; color: var(--navy); }
.card .price { font-weight: 700; color: var(--navy); font-size: 1.1rem; }
.card .price-old { color: var(--muted); text-decoration: line-through; font-size: 0.9rem; margin-right: 8px; }
.promo-badge { background: var(--accent); color: #fff; font-size: 0.72rem; font-weight: 700; padding: 3px 8px; border-radius: 6px; }

.badge { display: inline-block; font-size: 0.75rem; font-weight: 600; padding: 3px 10px; border-radius: 999px; }
.badge-purchase { background: #e6efe9; color: var(--success); }
.badge-quote { background: #eef2f6; color: var(--accent-dark); }

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

/* Product detail */
.product-detail { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; margin: 30px 0 60px; }
@media (max-width: 860px) { .product-detail { grid-template-columns: 1fr; } }
.gallery-main { border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); background: #fff; }
.gallery-thumbs { display: flex; gap: 10px; margin-top: 10px; flex-wrap: wrap; }
.gallery-thumbs img { width: 72px; height: 72px; object-fit: cover; border-radius: 6px; border: 1px solid var(--border); cursor: pointer; }
.product-info h1 { font-size: 1.8rem; color: var(--navy); margin: 0 0 12px; }
.price-row { display: flex; align-items: baseline; gap: 12px; margin: 18px 0; }
.price-row .price-main { font-size: 1.9rem; font-weight: 700; color: var(--navy); }
.price-ht { color: var(--muted); font-size: 0.9rem; }
.product-desc { margin: 24px 0; color: var(--text); }
.product-desc h2, .product-desc h3 { color: var(--navy); }

/* Forms */
form.box { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; max-width: 560px; }
label { display: block; font-weight: 600; font-size: 0.88rem; margin: 14px 0 6px; color: var(--navy); }
input, textarea, select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px;
  font-size: 0.95rem; font-family: inherit; background: #fff; color: var(--text);
}
input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
.qty-input { width: 70px; }
.alert { padding: 12px 16px; border-radius: 8px; margin-bottom: 18px; font-size: 0.9rem; }
.alert-success { background: #e6efe9; color: var(--success); }
.alert-error { background: #fbeceb; color: var(--danger); }

/* Tables (cart / account) */
table.data { width: 100%; border-collapse: collapse; background: #fff; border-radius: var(--radius); overflow: hidden; }
table.data th, table.data td { padding: 12px 14px; text-align: left; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
table.data th { background: #f1f4f8; color: var(--navy); font-weight: 600; }

.trust-row { display: flex; gap: 32px; flex-wrap: wrap; margin-top: 24px; }
.trust-item { display: flex; align-items: center; gap: 10px; color: var(--muted); font-size: 0.9rem; }

.category-hero { background: var(--card); border-bottom: 1px solid var(--border); padding: 32px 0; }
.category-hero h1 { color: var(--navy); margin: 0 0 6px; font-size: 1.6rem; }