/* Khởi tạo biến màu sắc chuẩn phong cách sang trọng */
:root {
    --primary: #9b0000; /* Đỏ đậm truyền thống */
    --gold: #d4af37;    /* Vàng kim loại */
    --dark: #111111;
    --gray: #f4f4f4;
    --text: #333333;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Helvetica Neue', Arial, sans-serif;
}

body {
    background-color: #ffffff;
    color: var(--text);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Top Bar */
.top-bar {
    background-color: var(--primary);
    color: #fff;
    font-size: 14px;
    padding: 8px 0;
}

.top-bar-content {
    display: flex;
    justify-content: flex-end;
}

.contact-info span {
    margin-left: 20px;
}

.contact-info i {
    margin-right: 5px;
    color: var(--gold);
}

/* Navbar */
header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo a {
    text-decoration: none;
    color: var(--primary);
    font-size: 28px;
    font-weight: bold;
    letter-spacing: 2px;
}

.nav-links {
    list-style: none;
    display: flex;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 15px;
    transition: color 0.3s ease;
}

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

.hamburger {
    display: none;
    font-size: 24px;
    cursor: pointer;
    color: var(--primary);
}

/* Hero Section */
.hero {
    height: 600px;
    background: linear-gradient(rgba(0,0,0,0.6), rgba(0,0,0,0.6)), url('https://images.unsplash.com/photo-1563514757539-775677b102ce?ixlib=rb-1.2.1&auto=format&fit=crop&w=1920&q=80') center/cover;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: #fff;
}

.hero-content h2 {
    font-size: 48px;
    color: var(--gold);
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 3px;
}

.hero-content p {
    font-size: 18px;
    margin-bottom: 30px;
}

.btn-primary {
    background-color: var(--primary);
    color: #fff;
    padding: 12px 30px;
    text-decoration: none;
    font-weight: bold;
    border-radius: 4px;
    text-transform: uppercase;
    transition: background 0.3s;
}

.btn-primary:hover {
    background-color: #7a0000;
}

/* Products Section */
.products {
    padding: 80px 15px;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
}

.section-title h2 {
    font-size: 32px;
    color: var(--primary);
    text-transform: uppercase;
}

.divider {
    height: 3px;
    width: 60px;
    background-color: var(--gold);
    margin: 15px auto 0;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.product-card {
    background: #fff;
    border: 1px solid #eee;
    padding: 20px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.product-img img {
    max-width: 100%;
    height: auto;
    margin-bottom: 15px;
}

.product-info h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.price {
    color: var(--primary);
    font-weight: bold;
    font-size: 18px;
    margin-bottom: 15px;
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
    padding: 8px 20px;
    cursor: pointer;
    font-weight: bold;
    transition: all 0.3s;
}

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

/* Footer */
footer {
    background-color: var(--dark);
    color: #ccc;
    padding-top: 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    color: var(--gold);
    margin-bottom: 20px;
    font-size: 18px;
}

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

.footer-col ul li {
    margin-bottom: 12px;
}

.footer-col ul li a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-col ul li a:hover {
    color: var(--gold);
}

.contact-list i {
    width: 25px;
    color: var(--gold);
}

.footer-bottom {
    background-color: #000;
    padding: 20px 0;
    text-align: center;
    font-size: 14px;
}

/* Responsive cho Mobile */
@media (max-width: 768px) {
    .nav-links {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: #fff;
        box-shadow: 0 5px 10px rgba(0,0,0,0.1);
        text-align: center;
    }
    
    .nav-links.active {
        display: flex;
    }

    .nav-links li {
        margin: 0;
    }

    .nav-links a {
        display: block;
        padding: 15px 0;
        border-bottom: 1px solid #eee;
    }

    .hamburger {
        display: block;
    }

    .hero-content h2 {
        font-size: 32px;
    }
}