:root {
  --brand-blue: #1565c0;
  --brand-blue-dark: #0d47a1;
  --brand-dark: #0b1f33;
  --brand-steel: #16334d;
  --brand-light: #eef3f9;
}

body {
  font-family: 'IBM Plex Sans Thai', sans-serif;
  color: #2b2b2b;
  background: #fff;
}

.topbar {
  background: var(--brand-dark);
  color: #fff;
}

.main-nav {
  background: var(--brand-steel);
}
.main-nav .nav-link {
  font-weight: 500;
  padding: 0.5rem 1rem !important;
}
.main-nav .nav-link:hover {
  color: var(--brand-blue) !important;
}
.brand-logo {
  height: 96px;
  width: auto;
  object-fit: contain;
}

/* หมวดหมู่หน้าแรก */
.cat-card {
  background: #fff;
  border: 1px solid #e5e5e5;
  border-radius: 12px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.cat-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
}
.cat-card-img {
  width: 100%;
  aspect-ratio: 800 / 600;
  object-fit: contain;
  background: var(--brand-light);
  display: block;
  padding: 12px;
}
.cat-card-label {
  background: var(--brand-blue);
  padding: 12px 14px;
  text-align: center;
}
.cat-card-label span {
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--brand-dark), var(--brand-steel));
  color: #fff;
  padding: 5rem 0;
}
.hero h1 {
  font-weight: 700;
}
.btn-brand {
  background: var(--brand-blue);
  border-color: var(--brand-blue);
  color: #fff;
  font-weight: 600;
}
.btn-brand:hover {
  background: var(--brand-blue-dark);
  border-color: var(--brand-blue-dark);
  color: #fff;
}

/* Section titles */
.section-title {
  font-weight: 700;
  border-left: 5px solid var(--brand-blue);
  padding-left: 0.75rem;
  margin-bottom: 2rem;
}

/* Product cards */
.product-card {
  border: 1px solid #e5e5e5;
  border-radius: 0.5rem;
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  height: 100%;
}
.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 25px rgba(0,0,0,0.08);
}
.product-card .product-img {
  width: 100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  background: #f0f0f0;
}
.product-card .card-body h6 {
  font-weight: 600;
  min-height: 2.8em;
}
.badge-cat {
  background: var(--brand-blue);
}

/* Category filter pills */
.cat-pill {
  border: 1px solid var(--brand-steel);
  color: var(--brand-steel);
  border-radius: 2rem;
  padding: 0.35rem 1rem;
  text-decoration: none;
  display: inline-block;
  margin: 0.2rem;
  font-size: 0.9rem;
}
.cat-pill.active, .cat-pill:hover {
  background: var(--brand-blue);
  border-color: var(--brand-blue);
  color: #fff;
}

/* Footer */
.site-footer {
  background: var(--brand-dark);
}
.footer-link {
  color: rgba(255,255,255,0.7);
  text-decoration: none;
  display: block;
  padding: 0.15rem 0;
}
.footer-link:hover {
  color: var(--brand-blue);
}

/* Admin */
.admin-sidebar {
  background: var(--brand-dark);
  min-height: 100vh;
}
.admin-sidebar a {
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  display: block;
  padding: 0.6rem 1rem;
  border-radius: 0.35rem;
}
.admin-sidebar a:hover, .admin-sidebar a.active {
  background: var(--brand-blue);
  color: #fff;
}