/* Dongsheng International - Pure Static CSS */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Playfair+Display:wght@700&display=swap');

:root {
  --gold: #D4AF37;
  --dark-gold: #996515;
  --light-gold: #F9E2AF;
  --bg-dark: #121212;
  --bg-card: #1E1E1E;
}

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

body {
  background-color: var(--bg-dark);
  color: #e2e8f0;
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Playfair Display', serif;
  color: var(--gold);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Utilities */
.gold-gradient {
  background: linear-gradient(135deg, #D4AF37 0%, #996515 100%);
}

.gold-text-gradient {
  background: linear-gradient(135deg, #D4AF37 0%, #F9E2AF 50%, #996515 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: 9999px;
  font-weight: 700;
  text-decoration: none;
  transition: all 0.3s ease;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, #D4AF37 0%, #996515 100%);
  color: var(--bg-dark);
}

.btn-primary:hover {
  transform: scale(1.05);
  box-shadow: 0 0 20px rgba(212, 175, 55, 0.4);
}

.btn-outline {
  border: 2px solid var(--gold);
  color: var(--gold);
  background: transparent;
}

.btn-outline:hover {
  background: var(--gold);
  color: var(--bg-dark);
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: all 0.4s ease;
  padding: 1.5rem 0;
}

header.scrolled {
  background: rgba(18, 18, 18, 0.9);
  backdrop-filter: blur(10px);
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gold);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--bg-dark);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-main {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 1px;
}

.logo-sub {
  font-size: 0.6rem;
  color: rgba(212, 175, 55, 0.6);
  text-transform: uppercase;
  letter-spacing: 2px;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2rem;
}

nav a {
  color: #94a3b8;
  text-decoration: none;
  font-weight: 500;
  transition: color 0.3s;
  position: relative;
}

nav a:hover, nav a.active {
  color: var(--gold);
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gold);
  transition: width 0.3s;
}

nav a:hover::after, nav a.active::after {
  width: 100%;
}

.mobile-toggle {
  display: none;
  color: var(--gold);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Sections */
section {
  padding: 6rem 0;
}

.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding: 0;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.3;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(18,18,18,0.6), rgba(18,18,18,0.9), var(--bg-dark));
}

.hero-content {
  max-width: 800px;
}

.hero h1 {
  font-size: 4.5rem;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero p {
  font-size: 1.25rem;
  color: #cbd5e1;
  margin-bottom: 2.5rem;
}

/* Cards */
.card {
  background: var(--bg-card);
  border-radius: 1rem;
  border: 1px solid rgba(212, 175, 55, 0.1);
  overflow: hidden;
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.3);
  border-color: rgba(212, 175, 55, 0.3);
}

/* Marquee */
.marquee-container {
  overflow: hidden;
  white-space: nowrap;
  padding: 2rem 0;
  background: var(--bg-card);
}

.marquee-content {
  display: inline-flex;
  gap: 2rem;
  animation: marquee 40s linear infinite;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.marquee-item {
  width: 300px;
  background: var(--bg-dark);
  padding: 1.5rem;
  border-radius: 1rem;
  border: 1px solid rgba(212, 175, 55, 0.1);
}

/* Products Page */
.products-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 3rem;
  margin-top: 3rem;
}

.sidebar {
  position: sticky;
  top: 100px;
  height: fit-content;
}

.filter-group {
  margin-bottom: 2rem;
}

.filter-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--gold);
  margin-bottom: 1rem;
  display: block;
}

.filter-options {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-btn {
  padding: 0.4rem 0.8rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  background: var(--bg-dark);
  border: 1px solid rgba(212, 175, 55, 0.2);
  color: #94a3b8;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn.active {
  background: var(--gold);
  color: var(--bg-dark);
  border-color: var(--gold);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
}

/* Footer */
footer {
  background: var(--bg-card);
  padding: 5rem 0 2rem;
  border-top: 1px solid rgba(212, 175, 55, 0.1);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

/* Responsive */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .hero h1 { font-size: 3rem; }
  .nav-links { display: none; }
  .mobile-toggle { display: block; }
  .products-layout { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}

/* Custom Scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--bg-dark); }
::-webkit-scrollbar-thumb { background: var(--gold); border-radius: 4px; }