/* styles.css */
:root {
    --primary-gold: #d4af37;
    --light-gold: #f1e5ac;
    --dark-bg: #0a0a0a;
    --card-bg: #1a1a1a;
    --text-main: #e0e0e0;
    --text-muted: #a0a0a0;
    --accent-gold: #c5a059;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "PingFang SC", "Microsoft YaHei", sans-serif;
}

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
    cursor: pointer;
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.95);
    border-bottom: 1px solid rgba(212, 175, 55, 0.2);
    backdrop-filter: blur(10px);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--primary-gold);
    letter-spacing: 2px;
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-size: 1rem;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
}

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

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

.nav-links a:hover {
    color: var(--primary-gold);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    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+background') center/cover;
    padding: 0 2rem;
}

.hero-content h1 {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    color: var(--primary-gold);
    text-shadow: 0 0 20px rgba(212, 175, 55, 0.5);
    animation: fadeInUp 1s ease;
}

.hero-content p {
    font-size: 1.2rem;
    max-width: 800px;
    margin: 0 auto 2rem;
    color: var(--text-main);
    animation: fadeInUp 1s ease 0.2s backwards;
}

/* Sections */
section {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--primary-gold);
    margin-bottom: 1rem;
    position: relative;
    display: inline-block;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-gold);
}

/* Grid Layouts */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    align-items: center;
}

/* Cards */
.card {
    background: var(--card-bg);
    border: 1px solid rgba(212, 175, 55, 0.1);
    padding: 2rem;
    border-radius: 8px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-gold);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}

.card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 4px;
    margin-bottom: 1.5rem;
}

/* Product Page Specific */
.filter-bar {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: center;
    border: 1px solid rgba(212, 175, 55, 0.2);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-group label {
    font-size: 0.85rem;
    color: var(--primary-gold);
}

select, input {
    background: #2a2a2a;
    border: 1px solid #444;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    outline: none;
}

select:focus, input:focus {
    border-color: var(--primary-gold);
}

/* Footer */
footer {
    background: #050505;
    padding: 4rem 2rem;
    border-top: 1px solid rgba(212, 175, 55, 0.2);
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
}

.footer-section h3 {
    color: var(--primary-gold);
    margin-bottom: 1.5rem;
}

.footer-section p, .footer-section li {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 3rem;
    margin-top: 3rem;
    border-top: 1px solid #222;
    color: var(--text-muted);
    font-size: 0.8rem;
}

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

/* Responsive */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }
    .nav-links {
        display: none; /* Mobile menu logic needed */
    }
    .grid-2 {
        grid-template-columns: 1fr;
    }
}

/* Online Service Button */
.online-service {
    position: fixed;
    right: 20px;
    bottom: 20px;
    background: var(--primary-gold);
    color: black;
    padding: 1rem;
    border-radius: 50px;
    font-weight: bold;
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
    z-index: 999;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.online-service:hover {
    background: var(--light-gold);
    transform: scale(1.05);
}