/* ==========================================
   Luxury Designer - Static Catalog Site
   Style: Minimal Luxury (Black/White/Gray)
   ========================================== */

/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --black: #111;
  --dark: #222;
  --gray: #666;
  --light-gray: #999;
  --border: #e0e0e0;
  --bg: #fafafa;
  --white: #fff;
  --accent: #000;
  --font: 'Helvetica Neue', 'Arial', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  --font-serif: 'Georgia', 'Times New Roman', serif;
  --max-width: 1400px;
  --header-h: 60px;
}

html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--black); background: var(--white); line-height: 1.6; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; height: auto; display: block; }
ul, ol { list-style: none; }

/* === Layout === */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

/* === Header === */
.header {
  position: sticky; top: 0; z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  height: var(--header-h);
}
.header-inner {
  max-width: var(--max-width); margin: 0 auto; padding: 0 24px;
  display: flex; align-items: center; justify-content: space-between;
  height: 100%;
}
.logo {
  font-family: var(--font-serif);
  font-size: 20px; font-weight: 700;
  letter-spacing: 3px; text-transform: uppercase;
}
.nav { display: flex; gap: 32px; align-items: center; }
.nav a {
  font-size: 13px; letter-spacing: 1.5px;
  text-transform: uppercase; color: var(--gray);
  transition: color 0.2s;
}
.nav a:hover, .nav a.active { color: var(--black); }

/* Language Switcher */
.lang-switcher {
  position: relative; cursor: pointer;
}
.lang-switcher-btn {
  font-size: 13px; letter-spacing: 1px; text-transform: uppercase;
  color: var(--gray); background: none; border: 1px solid var(--border);
  padding: 4px 12px; border-radius: 2px; cursor: pointer;
  transition: all 0.2s;
}
.lang-switcher-btn:hover { border-color: var(--black); color: var(--black); }
.lang-dropdown {
  display: none; position: absolute; top: 100%; right: 0;
  background: var(--white); border: 1px solid var(--border);
  min-width: 160px; margin-top: 4px; box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  z-index: 200;
}
.lang-dropdown.open { display: block; }
.lang-dropdown a {
  display: block; padding: 8px 16px; font-size: 13px;
  color: var(--gray); transition: all 0.2s;
}
.lang-dropdown a:hover { background: var(--bg); color: var(--black); }
.lang-dropdown a.active { color: var(--black); font-weight: 600; }

/* Mobile menu */
.menu-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; }

/* === Search Bar === */
.search-bar {
  padding: 20px 0;
  display: flex; justify-content: center;
}
.search-bar input {
  width: 100%; max-width: 600px;
  padding: 12px 20px; border: 1px solid var(--border);
  font-size: 14px; font-family: var(--font);
  outline: none; transition: border-color 0.2s;
}
.search-bar input:focus { border-color: var(--black); }

/* === Breadcrumb === */
.breadcrumb {
  padding: 16px 0; font-size: 12px;
  color: var(--light-gray); letter-spacing: 0.5px;
}
.breadcrumb a { color: var(--light-gray); transition: color 0.2s; }
.breadcrumb a:hover { color: var(--black); }
.breadcrumb span { margin: 0 8px; }

/* === Hero / Page Title === */
.page-hero {
  text-align: center; padding: 60px 0 40px;
}
.page-hero h1 {
  font-family: var(--font-serif);
  font-size: 36px; font-weight: 400;
  letter-spacing: 6px; text-transform: uppercase;
  margin-bottom: 8px;
}
.page-hero p {
  font-size: 14px; color: var(--gray);
  letter-spacing: 1px;
}

/* === Brand Tier Section === */
.tier-section { padding: 40px 0; }
.tier-title {
  font-size: 11px; letter-spacing: 3px;
  text-transform: uppercase; color: var(--light-gray);
  margin-bottom: 24px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}

/* === Brand Grid === */
.brand-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}
.brand-card {
  border: 1px solid var(--border);
  padding: 24px 16px; text-align: center;
  transition: all 0.3s; cursor: pointer;
  background: var(--white);
}
.brand-card:hover {
  border-color: var(--black);
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}
.brand-card h3 {
  font-size: 14px; font-weight: 600;
  letter-spacing: 2px; text-transform: uppercase;
  margin-bottom: 4px;
}
.brand-card .brand-cn {
  font-size: 12px; color: var(--light-gray);
}

/* === Product Grid === */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  padding: 20px 0;
}
.product-card {
  overflow: hidden; cursor: pointer;
  transition: transform 0.3s;
}
.product-card:hover { transform: translateY(-2px); }
.product-card .thumb {
  width: 100%; aspect-ratio: 1;
  object-fit: cover; background: var(--bg);
  border: 1px solid var(--border);
}
.product-card .info {
  padding: 10px 0;
}
.product-card .title {
  font-size: 12px; color: var(--gray);
  letter-spacing: 0.5px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.product-card .photo-count {
  font-size: 11px; color: var(--light-gray); margin-top: 2px;
}

/* === Category Filter Tabs === */
.filter-tabs {
  display: flex; flex-wrap: wrap; gap: 8px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.filter-tab {
  font-size: 12px; letter-spacing: 1px;
  text-transform: uppercase; padding: 6px 16px;
  border: 1px solid var(--border);
  color: var(--gray); cursor: pointer;
  transition: all 0.2s; background: none;
}
.filter-tab:hover, .filter-tab.active {
  border-color: var(--black); color: var(--black);
  background: var(--black); color: var(--white);
}

/* === Product Detail / Gallery === */
.gallery-page {
  max-width: 900px; margin: 0 auto; padding: 20px 24px;
}
.gallery-title {
  font-family: var(--font-serif);
  font-size: 24px; font-weight: 400;
  letter-spacing: 3px; text-transform: uppercase;
  text-align: center; padding: 20px 0;
}
.gallery-main {
  width: 100%; margin-bottom: 16px;
}
.gallery-main img {
  width: 100%; max-height: 70vh;
  object-fit: contain; background: var(--bg);
}
.gallery-thumbs {
  display: flex; gap: 8px; overflow-x: auto;
  padding: 8px 0;
}
.gallery-thumbs img {
  width: 80px; height: 80px;
  object-fit: cover; cursor: pointer;
  border: 2px solid transparent;
  opacity: 0.6; transition: all 0.2s;
}
.gallery-thumbs img:hover,
.gallery-thumbs img.active {
  border-color: var(--black); opacity: 1;
}
.gallery-nav {
  display: flex; justify-content: space-between;
  padding: 16px 0;
}
.gallery-nav a {
  font-size: 12px; letter-spacing: 1px;
  text-transform: uppercase; color: var(--gray);
  padding: 8px 20px; border: 1px solid var(--border);
  transition: all 0.2s;
}
.gallery-nav a:hover { border-color: var(--black); color: var(--black); }

/* === Category Page === */
.cat-brand-section { padding: 30px 0; border-bottom: 1px solid var(--border); }
.cat-brand-title {
  font-size: 18px; font-weight: 600;
  letter-spacing: 2px; text-transform: uppercase;
  margin-bottom: 16px;
}

/* === Contact === */
.contact-section {
  text-align: center; padding: 60px 0;
}
.whatsapp-btn {
  display: inline-block;
  background: #25D366; color: white;
  padding: 14px 32px; font-size: 16px;
  border-radius: 4px; margin-top: 16px;
  letter-spacing: 1px; transition: background 0.2s;
}
.whatsapp-btn:hover { background: #1da855; }

/* === Footer === */
.footer {
  border-top: 1px solid var(--border);
  padding: 30px 0; text-align: center;
  font-size: 12px; color: var(--light-gray);
  letter-spacing: 0.5px;
}

/* === Responsive === */
@media (max-width: 768px) {
  .nav { display: none; }
  .nav.open {
    display: flex; flex-direction: column;
    position: fixed; top: var(--header-h); left: 0; right: 0;
    background: var(--white); border-bottom: 1px solid var(--border);
    padding: 20px; gap: 16px; z-index: 99;
  }
  .menu-toggle { display: block; }
  .page-hero h1 { font-size: 24px; letter-spacing: 3px; }
  .brand-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  .brand-card { padding: 16px 10px; }
  .brand-card h3 { font-size: 12px; letter-spacing: 1px; }
  .filter-tabs { gap: 4px; }
  .filter-tab { font-size: 11px; padding: 4px 10px; }
  .gallery-title { font-size: 18px; }
  .lang-dropdown { right: -20px; }
}

@media (max-width: 480px) {
  .brand-grid { grid-template-columns: repeat(2, 1fr); }
  .product-grid { grid-template-columns: repeat(2, 1fr); gap: 8px; }
  .product-card .title { font-size: 11px; }
  .container { padding: 0 12px; }
}

/* === WhatsApp Floating Button === */
.wa-float {
  position: fixed; bottom: 24px; right: 24px;
  width: 56px; height: 56px;
  background: #25D366; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.2);
  z-index: 999; transition: transform 0.2s;
  text-decoration: none;
}
.wa-float:hover { transform: scale(1.1); }
.wa-float svg { width: 28px; height: 28px; fill: white; }

/* === WhatsApp Inquiry Button (Product Page) === */
.wa-inquiry {
  display: inline-flex; align-items: center; gap: 8px;
  background: #25D366; color: white;
  padding: 12px 24px; font-size: 14px;
  border-radius: 4px; letter-spacing: 0.5px;
  transition: background 0.2s; text-decoration: none;
  margin-top: 8px;
}
.wa-inquiry:hover { background: #1da855; color: white; }
.wa-inquiry svg { width: 18px; height: 18px; fill: white; }