/* --- PREMIUM MINIMALISM STYLE GUIDE --- */
:root {
	--primary-color: #111111;
	--accent-color: #c5a880;
	/* Màu vàng kim Champagne */
	--text-muted: #666666;
	--bg-light: #f9f9f9;
	--transition-smooth: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

body {
	font-family: 'Inter', sans-serif;
	color: var(--primary-color);
	overflow-x: hidden;
	letter-spacing: -0.01em;
}

/* Typography & Whitespace */
h1,
h2,
h3,
h4,
h5,
h6 {
	font-weight: 600;
	letter-spacing: -0.02em;
}

.section-padding {
	padding: 100px 0;
}

@media (max-width: 768px) {
	.section-padding {
		padding: 60px 0;
	}
}

/* Component: Header & Navigation */
.sticky-header {
	position: sticky;
	top: 0;
	z-index: 1020;
	background: rgba(255, 255, 255, 0.95);
	backdrop-filter: blur(10px);
	border-bottom: 1px solid rgba(0, 0, 0, 0.05);
	transition: var(--transition-smooth);
}

.navbar-brand {
	font-weight: 700;
	letter-spacing: 2px;
}

.nav-link {
	font-weight: 500;
	font-size: 0.95rem;
	color: var(--primary-color) !important;
	position: relative;
	padding: 0.5rem 1rem !important;
}

.nav-link::after {
	content: '';
	position: absolute;
	bottom: 0;
	left: 1rem;
	right: 1rem;
	height: 1px;
	background-color: var(--accent-color);
	transform: scaleX(0);
	transition: var(--transition-smooth);
}

.nav-link:hover::after,
.nav-link.active::after {
	transform: scaleX(1);
}

/* Mega Menu */
.mega-menu {
	position: static !important;
}

.mega-menu-dropdown {
	width: 100%;
	border: none;
	border-radius: 0;
	box-shadow: 0 15px 30px rgba(0, 0, 0, 0.05);
	background: rgba(255, 255, 255, 0.98);
	border-top: 1px solid #eee;
	padding: 2rem 0;
}

/* Premium Buttons & CTA */
.btn-premium {
	background-color: var(--primary-color);
	color: #fff;
	border: 1px solid var(--primary-color);
	padding: 12px 30px;
	border-radius: 0;
	font-size: 0.9rem;
	font-weight: 500;
	letter-spacing: 1px;
	text-transform: uppercase;
	transition: var(--transition-smooth);
}

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

.btn-outline-premium {
	background-color: transparent;
	color: var(--primary-color);
	border: 1px solid var(--primary-color);
	padding: 12px 30px;
	border-radius: 0;
	font-size: 0.9rem;
	font-weight: 500;
	letter-spacing: 1px;
	text-transform: uppercase;
	transition: var(--transition-smooth);
}

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

/* Hero & Inner Banners */
.hero-zoom .carousel-item img {
	transform: scale(1);
	transition: transform 6s ease-out;
}

.hero-zoom .carousel-item.active img {
	transform: scale(1.08);
}

.glass-card {
	background: rgba(255, 255, 255, 0.85);
	backdrop-filter: blur(12px);
	border: 1px solid rgba(255, 255, 255, 0.5);
}

.inner-banner {
	height: 350px;
	background-size: cover;
	background-position: center;
	position: relative;
}

.inner-banner::before {
	content: '';
	position: absolute;
	inset: 0;
	background: rgba(0, 0, 0, 0.4);
}

/* Premium Product Grid (No Cards - Full Width Seamless) */
.product-grid-item {
	position: relative;
	overflow: hidden;
	margin-bottom: 2rem;
}

.product-image-wrapper {
	overflow: hidden;
	position: relative;
	background-color: var(--bg-light);
}

.product-image-wrapper img {
	transition: var(--transition-smooth);
}

.product-grid-item:hover .product-image-wrapper img {
	transform: scale(1.05);
}

.product-action-overlay {
	position: absolute;
	bottom: 0;
	left: 0;
	right: 0;
	padding: 1.5rem;
	background: linear-gradient(to top, rgba(0, 0, 0, 0.4), transparent);
	opacity: 0;
	transition: var(--transition-smooth);
}

.product-grid-item:hover .product-action-overlay {
	opacity: 1;
}

/* 360 Degree Viewer Placeholder */
.viewer-360-container {
	position: relative;
	cursor: ew-resize;
	background: var(--bg-light);
	overflow: hidden;
}

.viewer-360-instruction {
	position: absolute;
	bottom: 20px;
	left: 50%;
	transform: translateX(-50%);
	background: rgba(0, 0, 0, 0.6);
	color: #fff;
	padding: 6px 16px;
	border-radius: 20px;
	font-size: 0.8rem;
	pointer-events: none;
}

/* Floating Widgets */
.floating-contact-container {
	position: fixed;
	bottom: 30px;
	left: 30px;
	z-index: 1040;
	display: flex;
	flex-direction: column;
	gap: 12px;
}

.floating-btn {
	width: 50px;
	height: 50px;
	border-radius: 50%;
	display: flex;
	align-items: center;
	justify-content: center;
	color: white !important;
	text-decoration: none;
	box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
	transition: var(--transition-smooth);
	font-size: 1.4rem;
}

.floating-btn:hover {
	transform: translateY(-5px);
}

.btn-phone {
	background-color: #28a745;
}

.btn-zalo {
	background-color: #0068ff;
}

.btn-backtop {
	position: fixed;
	bottom: 30px;
	right: 30px;
	z-index: 1040;
	width: 50px;
	height: 50px;
	background-color: var(--primary-color);
	color: white;
	border: none;
	opacity: 0;
	visibility: hidden;
	transition: var(--transition-smooth);
}

.btn-backtop.show {
	opacity: 1;
	visibility: visible;
}

/* Form Controls */
.form-premium-control {
	border: none;
	border-bottom: 1px solid #ccc;
	border-radius: 0;
	padding: 0.75rem 0;
	background: transparent;
}

.form-premium-control:focus {
	box-shadow: none;
	border-color: var(--primary-color);
	background: transparent;
}