:root {
  --primary: #2d6a2d;
  --primary-dark: #1e4d1e;
  --primary-light: #e8f3e8;
  --accent: #f5a623;
  --text: #222222;
  --text-light: #666666;
  --background: #ffffff;
  --card-border: #e0e0e0;
  --max-width: 1200px;
  --radius: 6px;
  --shadow: 0 2px 8px rgba(0,0,0,0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: system-ui, -apple-system, sans-serif;
  color: var(--text);
  background: var(--background);
  line-height: 1.6;
}

/* HEADER */
.site-header {
  background: var(--primary);
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.site-logo img { height: 40px; display: block; }
.site-logo span {
  color: #fff;
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

/* NAV */
.site-nav { display: flex; gap: 4px; }

.nav-item { position: relative; }

.nav-item > a {
  color: #fff;
  text-decoration: none;
  padding: 8px 14px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 500;
  display: block;
  white-space: nowrap;
  transition: background 0.15s;
}

.nav-item > a:hover { background: var(--primary-dark); }

.nav-dropdown {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  min-width: 200px;
  z-index: 200;
}

.nav-item:hover .nav-dropdown { display: block; }

.nav-dropdown a {
  display: block;
  padding: 10px 16px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.875rem;
  border-bottom: 1px solid var(--card-border);
  transition: background 0.15s;
}

.nav-dropdown a:last-child { border-bottom: none; }
.nav-dropdown a:hover { background: var(--primary-light); }

/* MAIN */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 32px 24px;
}

/* PAGE TITLE */
.page-title {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.page-subtitle {
  color: var(--text-light);
  margin-bottom: 28px;
  font-size: 0.95rem;
}

/* BREADCRUMB */
.breadcrumb {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-bottom: 20px;
}

.breadcrumb a { color: var(--primary); text-decoration: none; }
.breadcrumb a:hover { text-decoration: underline; }
.breadcrumb span { margin: 0 6px; }

/* PRODUCT GRID */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 24px;
}

/* PRODUCT CARD */
.product-card {
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: var(--text);
  display: flex;
  flex-direction: column;
  transition: box-shadow 0.2s, transform 0.2s;
  background: #fff;
}

.product-card:hover {
  box-shadow: 0 6px 20px rgba(0,0,0,0.12);
  transform: translateY(-2px);
}

.product-card img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: contain;
  background: #f9f9f9;
  padding: 12px;
}

.card-body { padding: 14px; flex: 1; display: flex; flex-direction: column; }

.card-brand {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-light);
  margin-bottom: 4px;
}

.card-title {
  font-size: 0.95rem;
  font-weight: 600;
  line-height: 1.4;
  margin-bottom: 10px;
  flex: 1;
}

.card-price {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
}

.card-sale {
  font-size: 0.85rem;
  color: #c0392b;
  margin-top: 2px;
}

/* PRODUCT PAGE */
.product-page {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

@media (max-width: 700px) {
  .product-page { grid-template-columns: 1fr; }
}

.product-image {
  background: #f9f9f9;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  padding: 24px;
}

.product-image img { width: 100%; display: block; }

.product-details h1 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 8px;
  line-height: 1.3;
}

.product-brand {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 16px;
}

.product-price {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 8px;
}

.product-sale {
  font-size: 1rem;
  color: #c0392b;
  margin-bottom: 16px;
}

.product-description {
  color: var(--text-light);
  margin-bottom: 24px;
  line-height: 1.7;
  font-size: 0.95rem;
}

.product-meta {
  list-style: none;
  margin-bottom: 28px;
  border: 1px solid var(--card-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.product-meta li {
  display: flex;
  padding: 10px 16px;
  font-size: 0.875rem;
  border-bottom: 1px solid var(--card-border);
}

.product-meta li:last-child { border-bottom: none; }

.product-meta li strong {
  width: 120px;
  flex-shrink: 0;
  color: var(--text-light);
}

.btn-buy {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  padding: 14px 28px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: 700;
  font-size: 1rem;
  transition: opacity 0.15s;
}

.btn-buy:hover { opacity: 0.9; }

/* CATEGORY HEADER */
.category-header {
  background: var(--primary-light);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 28px;
}

.sub-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.sub-nav a {
  background: #fff;
  border: 1px solid var(--card-border);
  border-radius: 20px;
  padding: 6px 16px;
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--text);
  transition: all 0.15s;
}

.sub-nav a:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

/* FOOTER */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255,255,255,0.7);
  text-align: center;
  padding: 24px;
  font-size: 0.85rem;
  margin-top: 64px;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .site-header { flex-direction: column; height: auto; padding: 12px 16px; gap: 8px; }
  .site-nav { flex-wrap: wrap; justify-content: center; }
  main { padding: 20px 16px; }
}