:root {
    --bg-dark: #121212;
    --bg-panel: #1a1a1a;
    --border-gold: #dfb86c;
    --text-white: #f5f5f5;
    --text-muted: #a0a0a0;
    --text-dark: #1e1e1e;
    --accent-red: #d32f2f;
    --font-heading: 'Cinzel', serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    --transition-fast: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

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

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: rgba(18, 18, 18, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(223, 184, 108, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo svg {
    width: 210px;
    height: 52px;
}

.nav-desktop {
    display: flex;
    gap: 30px;
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 1px;
}

.nav-desktop a:hover {
    color: var(--border-gold);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn .bar {
    width: 25px;
    height: 2px;
    background-color: var(--border-gold);
    transition: var(--transition-fast);
}

.mobile-menu {
    display: none;
    background: var(--bg-panel);
    border-bottom: 1px solid rgba(223, 184, 108, 0.1);
    flex-direction: column;
    padding: 20px;
    gap: 15px;
}

.mobile-menu a {
    font-size: 16px;
    font-weight: 500;
    padding: 8px 0;
}

/* Hero Section */
.hero {
    padding: 100px 0 80px;
    text-align: center;
    background: radial-gradient(circle at center, #1b160b 0%, var(--bg-dark) 80%);
}

.hero-badge {
    display: inline-block;
    border: 1px solid var(--border-gold);
    color: var(--border-gold);
    padding: 4px 12px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    border-radius: 20px;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.hero h1 {
    font-family: var(--font-heading);
    font-size: 42px;
    letter-spacing: 2px;
    margin-bottom: 20px;
    color: var(--text-white);
}

.hero p {
    font-size: 16px;
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 30px;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    border-radius: 4px;
    cursor: pointer;
    text-align: center;
    transition: var(--transition-fast);
}

.btn-primary {
    background-color: var(--border-gold);
    color: var(--text-dark);
}

.btn-primary:hover {
    background-color: #f5cf85;
    transform: translateY(-2px);
}

.btn-outline {
    border: 1px solid var(--border-gold);
    color: var(--border-gold);
    background: none;
}

.btn-outline:hover {
    background: rgba(223, 184, 108, 0.1);
}

/* Products Section */
.products-section {
    padding: 80px 0;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 28px;
    letter-spacing: 2px;
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 2px;
    background-color: var(--border-gold);
    margin: 15px auto 0;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.product-card {
    background-color: var(--bg-panel);
    border: 1px solid rgba(223, 184, 108, 0.05);
    border-radius: 4px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition-fast);
}

.product-card:hover {
    transform: translateY(-5px);
    border-color: rgba(223, 184, 108, 0.3);
}

.product-card-img-link {
    display: block;
    width: 100%;
    aspect-ratio: 1/1;
    overflow: hidden;
    background: #1a1a1a;
}

.product-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-fast);
}

.product-card:hover .product-card-img {
    scale: 1.05;
}

.product-card-info {
    padding: 20px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.product-card-title {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.4;
    height: 42px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.product-card-price {
    color: var(--border-gold);
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 18px;
}

.product-card-actions {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    margin-top: auto;
}

.product-card-actions .btn {
    padding: 8px 10px;
    font-size: 12px;
    font-weight: 600;
}

/* Detail Product Page */
.detail-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    padding: 60px 0 80px;
}

.detail-img-container {
    width: 100%;
    aspect-ratio: 1/1;
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid rgba(223, 184, 108, 0.1);
    background: var(--bg-panel);
}

.detail-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.detail-info {
    display: flex;
    flex-direction: column;
}

.detail-title {
    font-family: var(--font-heading);
    font-size: 28px;
    margin-bottom: 15px;
    line-height: 1.3;
}

.detail-price {
    font-size: 24px;
    color: var(--border-gold);
    font-weight: 700;
    margin-bottom: 25px;
}

.detail-actions {
    display: flex;
    gap: 15px;
    margin-bottom: 35px;
}

.detail-desc {
    color: var(--text-muted);
    font-size: 15px;
    line-height: 1.7;
    margin-bottom: 35px;
}

.detail-desc p {
    margin-bottom: 15px;
}

.detail-specs {
    margin-top: auto;
}

.detail-specs-title {
    font-size: 16px;
    font-weight: 600;
    border-bottom: 1px solid rgba(223, 184, 108, 0.2);
    padding-bottom: 8px;
    margin-bottom: 15px;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 14px;
}

.spec-label {
    color: var(--text-muted);
}

.spec-val {
    font-weight: 500;
}

/* Policy Content */
.policy-page {
    padding: 60px 0 80px;
    max-width: 800px;
    margin: 0 auto;
}

.policy-page h1 {
    font-family: var(--font-heading);
    font-size: 32px;
    margin-bottom: 30px;
    border-bottom: 1px solid rgba(223, 184, 108, 0.2);
    padding-bottom: 15px;
}

.policy-content {
    font-size: 15px;
    line-height: 1.8;
}

.policy-content h2 {
    font-size: 20px;
    color: var(--border-gold);
    margin: 30px 0 15px;
}

.policy-content p {
    margin-bottom: 15px;
    color: var(--text-white);
}

.policy-content ul {
    margin: 0 0 20px 20px;
}

.policy-content li {
    margin-bottom: 8px;
}

/* Footer */
footer {
    background-color: #0b0b0b;
    border-top: 1px solid rgba(223, 184, 108, 0.05);
    padding: 60px 0 30px;
    margin-top: 80px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.footer-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--border-gold);
    letter-spacing: 1px;
}

.footer-col p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.6;
}

.footer-col a {
    font-size: 14px;
    color: var(--text-muted);
}

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

.footer-bottom {
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 30px;
    margin-top: 40px;
    font-size: 13px;
    color: var(--text-muted);
}

/* Floating widgets */
.floating-widgets {
    position: fixed;
    bottom: 25px;
    right: 25px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 1000;
}

.widget-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    cursor: pointer;
    transition: var(--transition-fast);
}

.widget-btn:hover {
    transform: scale(1.1);
}

.widget-zalo {
    background-color: #0084ff;
    padding: 8px;
}

.widget-zalo img {
    width: 100%;
    height: 100%;
}

.widget-phone {
    background-color: var(--border-gold);
    color: var(--text-dark);
    font-size: 20px;
}

/* Responsive */
@media (max-width: 991px) {
    .products-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .detail-layout {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .nav-desktop {
        display: none;
    }
    .mobile-menu-btn {
        display: flex;
    }
    .hero h1 {
        font-size: 30px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    .floating-widgets {
        bottom: 15px;
        right: 15px;
    }
    .widget-btn {
        width: 45px;
        height: 45px;
    }
}