/* 
  Chinese Corporate Black Gold Theme 
  Author: KY Group Creative Team
*/

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;800&family=Playfair+Display:wght@700&display=swap');

:root {
  --primary: #D4AF37; /* Gold */
  --primary-light: #F1D279;
  --primary-dark: #A6891F;
  --bg-deep: #0A0A0A;
  --bg-surface: #1A1A1A;
  --bg-card: #252525;
  --text-main: #E0E0E0;
  --text-dim: #A0A0A0;
  --border: #333;
  --accent: #C0C0C0;
  --font-serif: "Playfair Display", serif;
  --font-sans: "Inter", "Microsoft YaHei", sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--bg-deep);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Header & Nav */
header {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.5rem 5%;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: 0.3s;
}

header.scrolled {
  padding: 0.8rem 5%;
  background: var(--bg-deep);
}

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo span {
  color: #fff;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

nav a {
  text-decoration: none;
  color: var(--text-main);
  font-weight: 500;
  font-size: 0.95rem;
  transition: 0.3s;
  text-transform: uppercase;
  letter-spacing: 1px;
}

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

/* Hero Section */
.hero {
  height: 100vh;
  background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('https://tse-mm.bing.com/th?q=luxury+corporate+headquarters') no-repeat center center/cover;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 5%;
}

.hero h1 {
  font-size: 4rem;
  margin-bottom: 1rem;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 5px;
  animation: fadeInUp 1s ease-out;
}

.hero p {
  font-size: 1.5rem;
  max-width: 800px;
  color: #fff;
  margin-bottom: 2rem;
  animation: fadeInUp 1.2s ease-out;
}

.btn {
  display: inline-block;
  padding: 1rem 2.5rem;
  background: var(--primary);
  color: #000;
  text-decoration: none;
  font-weight: bold;
  border-radius: 4px;
  transition: 0.3s;
  border: 2px solid var(--primary);
}

.btn:hover {
  background: transparent;
  color: var(--primary);
}

.btn-outline {
  background: transparent;
  color: var(--primary);
  margin-left: 1rem;
}

.btn-outline:hover {
  background: var(--primary);
  color: #000;
}

/* Sections */
section {
  padding: 100px 8%;
}

.section-title {
  text-align: center;
  margin-bottom: 60px;
}

.section-title h2 {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 15px;
  position: relative;
  display: inline-block;
}

.section-title h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  background: var(--primary);
}

/* Grid Layouts */
.grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
}

.card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
  transition: 0.3s transform;
}

.card:hover {
  transform: translateY(-10px);
  border-color: var(--primary);
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  cursor: pointer;
}

.card-content {
  padding: 20px;
}

.card-title {
  font-size: 1.2rem;
  color: var(--primary);
  margin-bottom: 10px;
}

/* News Section Individual */
.news-item {
  display: flex;
  gap: 20px;
  margin-bottom: 20px;
  background: var(--bg-surface);
  padding: 15px;
  border-radius: 4px;
  border-left: 4px solid var(--primary);
}

.news-date {
  color: var(--primary);
  font-weight: bold;
  min-width: 80px;
}

/* Products Filter */
.filter-bar {
  margin-bottom: 40px;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  background: var(--bg-surface);
  padding: 20px;
  border-radius: 8px;
}

.filter-group select, .filter-group input {
  padding: 8px 12px;
  background: var(--bg-deep);
  border: 1px solid var(--border);
  color: #fff;
  border-radius: 4px;
}

/* Contact Specific */
.contact-container {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 50px;
}

.contact-form input, .contact-form textarea {
  width: 100%;
  padding: 12px;
  margin-bottom: 20px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: #fff;
  border-radius: 4px;
}

.contact-form button {
  width: 100%;
  cursor: pointer;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive */
@media (max-width: 768px) {
  nav { display: none; }
  .hero h1 { font-size: 2.5rem; }
  .contact-container { grid-template-columns: 1fr; }
}

/* Footer */
footer {
  background: #000;
  padding: 60px 8% 20px;
  border-top: 1px solid var(--primary);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 40px;
  margin-bottom: 40px;
}

.footer-col h4 {
  color: var(--primary);
  margin-bottom: 20px;
}

.footer-col ul {
  list-style: none;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: var(--text-dim);
  text-decoration: none;
}

.bottom-bar {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid #222;
  font-size: 0.8rem;
  color: var(--text-dim);
}

/* Floating Service */
.service-float {
  position: fixed;
  right: 20px;
  bottom: 20px;
  background: var(--primary);
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #000;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(212, 175, 55, 0.4);
  z-index: 1001;
}

.service-float:hover {
  transform: scale(1.1);
}