/*
Theme Name: Linksys Vietnam
Theme URI: https://linksysvietnam.vn
Author: Linksys Vietnam
Author URI: https://linksysvietnam.vn
Description: Theme WordPress cho linksysvietnam.vn — tái hiện bản sắc giao diện xanh dương của website cũ, hiện đại hóa & responsive.
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: linksysvietnam
Tags: corporate, blue, two-columns, right-sidebar, responsive, custom-menu
*/

/* ==========================================================================
   1. Design tokens
   ========================================================================== */
:root {
	--lv-primary: #006699;
	--lv-primary-dark: #004d73;
	--lv-primary-deep: #003a57;
	--lv-accent: #3e81b5;
	--lv-accent-light: #488adb;
	--lv-highlight: #a34e33;
	--lv-heading: #375162;
	--lv-text: #2e3d47;
	--lv-muted: #6e8aa0;
	--lv-border: #cecece;
	--lv-border-light: #e4eaf0;
	--lv-bg-soft: #f4f7fa;
	--lv-link-hover: #cc3300;
	--lv-white: #ffffff;
	--lv-radius: 6px;
	--lv-shadow: 0 1px 3px rgba(0, 60, 120, 0.10);
	--lv-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, Tahoma, sans-serif;
}

/* ==========================================================================
   2. Reset / base
   ========================================================================== */
*,
*::before,
*::after {
	box-sizing: border-box;
}

html {
	-webkit-text-size-adjust: 100%;
	scroll-behavior: smooth;
}

body {
	margin: 0;
	font-family: var(--lv-font);
	font-size: 15px;
	line-height: 1.65;
	color: var(--lv-text);
	background: var(--lv-bg-soft);
	background-image: linear-gradient(to bottom, #dce8f2 0, var(--lv-bg-soft) 220px);
	background-repeat: repeat-x;
}

a {
	color: var(--lv-accent);
	text-decoration: none;
	transition: color 0.15s ease;
}

a:hover {
	color: var(--lv-link-hover);
	text-decoration: underline;
}

img {
	max-width: 100%;
	height: auto;
	vertical-align: middle;
}

h1, h2, h3, h4, h5, h6 {
	color: var(--lv-heading);
	line-height: 1.3;
	margin: 0 0 0.6em;
	font-weight: 700;
}

p {
	margin: 0 0 1em;
}

ul, ol {
	margin: 0 0 1em;
	padding-left: 1.4em;
}

blockquote {
	margin: 1em 0;
	padding: 0.6em 1.2em;
	border-left: 4px solid var(--lv-accent);
	background: var(--lv-bg-soft);
	color: var(--lv-heading);
}

table {
	border-collapse: collapse;
	width: 100%;
	margin: 0 0 1em;
}

th, td {
	border: 1px solid var(--lv-border-light);
	padding: 0.5em 0.75em;
	text-align: left;
}

th {
	background: var(--lv-bg-soft);
	color: var(--lv-heading);
}

/* Accessibility helpers */
.screen-reader-text {
	border: 0;
	clip: rect(1px, 1px, 1px, 1px);
	clip-path: inset(50%);
	height: 1px;
	width: 1px;
	margin: -1px;
	overflow: hidden;
	padding: 0;
	position: absolute !important;
	word-wrap: normal !important;
}

.screen-reader-text:focus {
	background-color: #fff;
	clip: auto !important;
	clip-path: none;
	color: var(--lv-primary);
	display: block;
	font-size: 1em;
	height: auto;
	left: 5px;
	line-height: normal;
	padding: 15px 23px 14px;
	text-decoration: none;
	top: 5px;
	width: auto;
	z-index: 100000;
}

/* ==========================================================================
   3. Layout
   ========================================================================== */
.lv-container {
	max-width: 1120px;
	margin: 0 auto;
	padding: 0 16px;
}

.lv-layout {
	display: grid;
	grid-template-columns: minmax(0, 1fr) 300px;
	gap: 28px;
	padding: 28px 0;
	align-items: start;
}

.lv-layout.no-sidebar {
	grid-template-columns: minmax(0, 1fr);
}

/* ==========================================================================
   4. Header
   ========================================================================== */
.lv-header {
	background: var(--lv-white);
	box-shadow: var(--lv-shadow);
}

.lv-header-top {
	background: var(--lv-primary-deep);
	color: #d7e6f2;
	font-size: 0.82rem;
}

.lv-header-top-inner {
	display: flex;
	justify-content: space-between;
	align-items: center;
	min-height: 34px;
	gap: 12px;
}

.lv-header-top a {
	color: #d7e6f2;
}

.lv-header-top a:hover {
	color: #fff;
}

.lv-breadcrumb {
	padding: 2px 0;
}

.lv-breadcrumb .sep {
	margin: 0 6px;
	opacity: 0.6;
}

.lv-branding {
	display: flex;
	align-items: center;
	gap: 24px;
	padding: 18px 0;
	flex-wrap: wrap;
}

.lv-logo img {
	display: block;
	width: 200px;
	height: auto;
}

.lv-banner {
	flex: 1 1 320px;
	min-width: 0;
}

.lv-banner img {
	display: block;
	width: 100%;
	max-height: 120px;
	object-fit: cover;
	border-radius: var(--lv-radius);
}

/* Navigation */
.lv-nav-wrap {
	background: var(--lv-primary);
	background-image: linear-gradient(to bottom, var(--lv-primary) 0, var(--lv-primary-dark) 100%);
}

.lv-main-nav ul {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-wrap: wrap;
}

.lv-main-nav > ul > li {
	position: relative;
}

.lv-main-nav a {
	display: block;
	color: #fff;
	padding: 12px 18px;
	font-size: 0.95rem;
	font-weight: 600;
}

.lv-main-nav > ul > li > a:hover {
	background: rgba(0, 0, 0, 0.14);
	text-decoration: none;
	color: #fff;
}

.lv-main-nav li.current-menu-item > a,
.lv-main-nav li.current-menu-ancestor > a {
	background: var(--lv-highlight);
}

.lv-main-nav .sub-menu {
	display: none;
	position: absolute;
	top: 100%;
	left: 0;
	min-width: 220px;
	background: var(--lv-primary-dark);
	box-shadow: 0 6px 14px rgba(0, 0, 0, 0.18);
	z-index: 50;
}

.lv-main-nav li:hover > .sub-menu,
.lv-main-nav li:focus-within > .sub-menu {
	display: block;
}

.lv-main-nav .sub-menu a {
	padding: 10px 16px;
	font-weight: 500;
	font-size: 0.88rem;
}

.lv-main-nav .sub-menu a:hover {
	background: rgba(0, 0, 0, 0.16);
}

/* Mobile toggle */
.lv-nav-toggle {
	display: none;
	background: transparent;
	border: 0;
	color: #fff;
	font-size: 1.4rem;
	cursor: pointer;
	padding: 8px 4px;
	width: 100%;
	text-align: left;
}

/* ==========================================================================
   5. Content
   ========================================================================== */
.lv-content {
	background: var(--lv-white);
	border: 1px solid var(--lv-border-light);
	border-radius: var(--lv-radius);
	padding: 24px;
	box-shadow: var(--lv-shadow);
}

.lv-page-title {
	margin-top: 0;
	font-size: 1.5rem;
	color: var(--lv-primary);
	border-bottom: 2px solid var(--lv-accent);
	padding-bottom: 10px;
}

.lv-section-title {
	color: #fff;
	background: var(--lv-accent);
	background-image: linear-gradient(to bottom, var(--lv-accent-light) 0, var(--lv-accent) 100%);
	margin: 0;
	padding: 8px 14px;
	font-size: 0.95rem;
	font-weight: 700;
	border-radius: var(--lv-radius) var(--lv-radius) 0 0;
}

.lv-box {
	background: var(--lv-white);
	border: 1px solid var(--lv-border-light);
	border-radius: var(--lv-radius);
	box-shadow: var(--lv-shadow);
	overflow: hidden;
}

.lv-box-body {
	padding: 14px;
}

/* Article list */
.lv-entry {
	padding: 20px 0;
	border-bottom: 1px solid var(--lv-border-light);
}

.lv-entry:first-child {
	padding-top: 0;
}

.lv-entry:last-child {
	border-bottom: 0;
}

.lv-entry-title {
	margin: 0 0 6px;
	font-size: 1.15rem;
}

.lv-entry-title a {
	color: var(--lv-heading);
}

.lv-entry-title a:hover {
	color: var(--lv-accent);
	text-decoration: none;
}

.lv-entry-meta {
	font-size: 0.82rem;
	color: var(--lv-muted);
	margin-bottom: 8px;
}

.lv-entry-thumb {
	float: left;
	margin: 0 16px 8px 0;
	width: 160px;
}

.lv-entry-thumb img {
	border-radius: 4px;
	border: 1px solid var(--lv-border-light);
}

.lv-readmore {
	display: inline-block;
	margin-top: 6px;
	color: var(--lv-accent);
	font-weight: 600;
	font-size: 0.88rem;
}

.lv-pagination {
	margin-top: 22px;
	text-align: center;
}

.lv-pagination .page-numbers {
	display: inline-block;
	padding: 6px 12px;
	margin: 0 3px;
	border: 1px solid var(--lv-border);
	border-radius: 4px;
	background: var(--lv-white);
}

.lv-pagination .page-numbers.current {
	background: var(--lv-highlight);
	border-color: var(--lv-highlight);
	color: #fff;
}

.lv-pagination .page-numbers:hover {
	background: var(--lv-accent);
	border-color: var(--lv-accent);
	color: #fff;
	text-decoration: none;
}

/* Single */
.lv-single-title {
	margin-top: 0;
	font-size: 1.6rem;
	color: var(--lv-primary);
}

.lv-single-meta {
	font-size: 0.84rem;
	color: var(--lv-muted);
	border-bottom: 1px solid var(--lv-border-light);
	padding-bottom: 12px;
	margin-bottom: 16px;
}

.lv-post-thumbnail {
	margin-bottom: 18px;
}

.lv-post-thumbnail img {
	border-radius: var(--lv-radius);
}

.lv-entry-content {
	font-size: 0.98rem;
}

.lv-entry-content a {
	color: var(--lv-accent);
	text-decoration: underline;
}

.lv-tags {
	margin-top: 18px;
	padding-top: 14px;
	border-top: 1px solid var(--lv-border-light);
	font-size: 0.85rem;
}

/* ==========================================================================
   6. Sidebar / widgets
   ========================================================================== */
.lv-sidebar {
	display: flex;
	flex-direction: column;
	gap: 24px;
}

.lv-widget {
	background: var(--lv-white);
	border: 1px solid var(--lv-border-light);
	border-radius: var(--lv-radius);
	box-shadow: var(--lv-shadow);
	overflow: hidden;
}

.lv-widget-title {
	margin: 0;
	padding: 9px 14px;
	font-size: 0.95rem;
	color: #fff;
	background-image: linear-gradient(to bottom, var(--lv-accent-light) 0, var(--lv-accent) 100%);
}

.lv-widget ul {
	list-style: none;
	margin: 0;
	padding: 12px 14px;
}

.lv-widget ul li {
	padding: 6px 0;
	border-bottom: 1px dashed var(--lv-border-light);
	font-size: 0.9rem;
}

.lv-widget ul li:last-child {
	border-bottom: 0;
}

.lv-widget-body {
	padding: 12px 14px;
}

.lv-widget-date {
	font-size: 0.78rem;
	color: var(--lv-muted);
}

.lv-widget ul li a {
	color: var(--lv-heading);
}

.lv-widget ul li a:hover {
	color: var(--lv-accent);
	text-decoration: none;
}

.lv-widget-thumb {
	float: left;
	margin: 0 10px 6px 0;
	width: 64px;
}

.lv-widget-thumb img {
	border-radius: 4px;
	border: 1px solid var(--lv-border-light);
	width: 100%;
	height: auto;
	display: block;
}

/* Mini product rows (sidebar "Sản phẩm nổi bật") */
.lv-widget-list--product {
	padding: 8px 14px;
}

.lv-widget-list--product .lv-mini {
	display: flex;
	align-items: center;
	gap: 10px;
	padding: 8px 0;
	border-bottom: 1px dashed var(--lv-border-light);
}

.lv-widget-list--product .lv-mini:last-child {
	border-bottom: 0;
}

.lv-mini-thumb {
	flex: 0 0 44px;
	height: 44px;
	border-radius: 4px;
	overflow: hidden;
	background: var(--lv-bg-soft);
	border: 1px solid var(--lv-border-light);
}

.lv-mini-thumb img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

.lv-mini-title {
	flex: 1;
	min-width: 0;
	font-size: 0.85rem;
	line-height: 1.35;
	color: var(--lv-heading);
	display: -webkit-box;
	-webkit-line-clamp: 2;
	-webkit-box-orient: vertical;
	overflow: hidden;
}

.lv-mini-title:hover {
	color: var(--lv-accent);
	text-decoration: none;
}

/* ==========================================================================
   7. Footer
   ========================================================================== */
.lv-footer {
	margin-top: 40px;
	background: var(--lv-primary-deep);
	color: #c7dbe9;
	font-size: 0.88rem;
}

.lv-footer a {
	color: #dce9f4;
}

.lv-footer a:hover {
	color: #fff;
}

.lv-footer-columns {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
	gap: 24px;
	padding: 28px 0;
}

.lv-footer h4 {
	color: #fff;
	font-size: 0.95rem;
	margin-bottom: 12px;
}

.lv-footer ul {
	list-style: none;
	margin: 0;
	padding: 0;
}

.lv-footer ul li {
	padding: 3px 0;
}

.lv-footer-bottom {
	background: var(--lv-primary-deep);
	border-top: 1px solid rgba(255, 255, 255, 0.12);
	padding: 12px 0;
	text-align: center;
	font-size: 0.8rem;
	color: #9fbcd2;
}

.lv-footer-bottom a {
	color: #c7dbe9;
}

/* ==========================================================================
   8. Components
   ========================================================================== */
.lv-searchform {
	display: flex;
	gap: 8px;
}

.lv-searchform input[type="search"] {
	flex: 1;
	padding: 8px 10px;
	border: 1px solid var(--lv-border);
	border-radius: 4px;
	font-family: inherit;
}

.lv-btn,
.lv-searchform button,
button[type="submit"],
input[type="submit"] {
	background: var(--lv-primary);
	color: #fff;
	border: 0;
	padding: 8px 16px;
	border-radius: 4px;
	cursor: pointer;
	font-family: inherit;
	font-weight: 600;
}

.lv-btn:hover,
.lv-searchform button:hover,
button[type="submit"]:hover,
input[type="submit"]:hover {
	background: var(--lv-primary-dark);
}

.wp-caption {
	max-width: 100%;
	margin-bottom: 1em;
}

.wp-caption-text {
	font-size: 0.8rem;
	color: var(--lv-muted);
	text-align: center;
}

.alignleft {
	float: left;
	margin: 0.4em 1.2em 0.8em 0;
}

.alignright {
	float: right;
	margin: 0.4em 0 0.8em 1.2em;
}

.aligncenter {
	display: block;
	margin: 0.8em auto;
}

.lv-404 {
	text-align: center;
	padding: 40px 0;
}

.lv-404 h1 {
	font-size: 3rem;
	color: var(--lv-primary);
	margin-bottom: 8px;
}

/* ==========================================================================
   9. Responsive
   ========================================================================== */
@media (max-width: 900px) {
	.lv-layout {
		grid-template-columns: minmax(0, 1fr);
	}

	.lv-sidebar {
		order: 2;
	}

	.lv-banner {
		flex-basis: 100%;
	}

	.lv-branding {
		gap: 14px;
	}
}

@media (max-width: 720px) {
	.lv-nav-toggle {
		display: block;
	}

	.lv-main-nav ul {
		flex-direction: column;
		display: none;
	}

	.lv-main-nav ul.is-open {
		display: flex;
	}

	.lv-main-nav .sub-menu {
		position: static;
		display: none;
		box-shadow: none;
		padding-left: 12px;
	}

	.lv-main-nav .sub-menu.is-open {
		display: block;
	}

	.lv-main-nav li:hover > .sub-menu {
		display: none;
	}

	.lv-header-top-inner {
		flex-direction: column;
		align-items: flex-start;
		padding: 6px 0;
	}

	.lv-entry-thumb {
		width: 100px;
	}
}

/* ==========================================================================
   10. Product grid / cards
   ========================================================================== */
.lv-content--flush {
	padding: 0;
	overflow: hidden;
}

.lv-archive-header {
	padding: 24px 24px 0;
}

.lv-cat-filter {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	padding: 16px 24px;
	border-bottom: 1px solid var(--lv-border-light);
}

.lv-cat-chip {
	display: inline-block;
	padding: 6px 14px;
	border: 1px solid var(--lv-border);
	border-radius: 999px;
	font-size: 0.85rem;
	color: var(--lv-heading);
	background: var(--lv-white);
	transition: all 0.15s ease;
}

.lv-cat-chip:hover {
	border-color: var(--lv-accent);
	color: var(--lv-accent);
	text-decoration: none;
}

.lv-cat-chip.is-active {
	background: var(--lv-primary);
	border-color: var(--lv-primary);
	color: #fff;
}

.lv-product-grid {
	display: grid;
	grid-template-columns: repeat(3, minmax(0, 1fr));
	gap: 24px;
	padding: 24px;
}

.lv-product-grid--sm {
	grid-template-columns: repeat(4, minmax(0, 1fr));
	gap: 16px;
	padding: 0;
}

.lv-product-card {
	display: flex;
	flex-direction: column;
	background: var(--lv-white);
	border: 1px solid var(--lv-border-light);
	border-radius: var(--lv-radius);
	overflow: hidden;
	box-shadow: var(--lv-shadow);
	transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.lv-product-card:hover {
	transform: translateY(-4px);
	box-shadow: 0 10px 24px rgba(0, 60, 120, 0.14);
}

.lv-product-card-media {
	display: block;
	aspect-ratio: 4 / 3;
	overflow: hidden;
	background: var(--lv-bg-soft);
}

.lv-product-card-media img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.3s ease;
}

.lv-product-card:hover .lv-product-card-media img {
	transform: scale(1.05);
}

.lv-product-card-body {
	display: flex;
	flex-direction: column;
	gap: 6px;
	padding: 14px;
}

.lv-product-card-cat {
	font-size: 0.75rem;
	text-transform: uppercase;
	letter-spacing: 0.03em;
	color: var(--lv-accent);
}

.lv-product-card-title {
	margin: 0;
	font-size: 1rem;
	line-height: 1.35;
}

.lv-product-card-title a {
	color: var(--lv-heading);
}

.lv-product-card-title a:hover {
	color: var(--lv-accent);
	text-decoration: none;
}

.lv-product-card-excerpt {
	font-size: 0.85rem;
	color: var(--lv-muted);
	flex-grow: 1;
}

.lv-product-card-btn {
	align-self: flex-start;
	margin-top: 4px;
	font-size: 0.82rem;
	padding: 7px 14px;
}

.lv-home-more {
	margin-top: 18px;
	text-align: center;
}

/* ==========================================================================
   11. Single product
   ========================================================================== */
.lv-product-single {
	display: flex;
	flex-direction: column;
	gap: 28px;
	padding: 28px 0;
}

.lv-product-top {
	display: grid;
	grid-template-columns: minmax(0, 460px) minmax(0, 1fr);
	gap: 32px;
	align-items: start;
}

.lv-gallery-main {
	border: 1px solid var(--lv-border-light);
	border-radius: var(--lv-radius);
	overflow: hidden;
	background: var(--lv-bg-soft);
}

.lv-gallery-main img {
	display: block;
	width: 100%;
	aspect-ratio: 4 / 3;
	object-fit: contain;
	background: #fff;
}

.lv-gallery-thumbs {
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
	margin-top: 10px;
}

.lv-gallery-thumb {
	border: 2px solid transparent;
	border-radius: 6px;
	padding: 0;
	overflow: hidden;
	background: var(--lv-white);
	cursor: pointer;
	width: 72px;
	height: 56px;
}

.lv-gallery-thumb img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	display: block;
}

.lv-gallery-thumb.is-active {
	border-color: var(--lv-primary);
}

.lv-product-info {
	background: var(--lv-white);
	border: 1px solid var(--lv-border-light);
	border-radius: var(--lv-radius);
	padding: 24px;
	box-shadow: var(--lv-shadow);
}

.lv-product-cat {
	font-size: 0.8rem;
	text-transform: uppercase;
	letter-spacing: 0.04em;
	color: var(--lv-accent);
	margin-bottom: 8px;
}

.lv-product-cat a {
	color: var(--lv-accent);
}

.lv-product-summary {
	color: var(--lv-text);
	margin: 16px 0;
	line-height: 1.7;
}

.lv-product-cta {
	margin-top: 20px;
}

.lv-btn-lg {
	padding: 12px 26px;
	font-size: 1rem;
}

/* Tabs */
.lv-tabs {
	background: var(--lv-white);
	border: 1px solid var(--lv-border-light);
	border-radius: var(--lv-radius);
	overflow: hidden;
	box-shadow: var(--lv-shadow);
}

.lv-tabs-nav {
	display: flex;
	border-bottom: 1px solid var(--lv-border-light);
	background: var(--lv-bg-soft);
}

.lv-tab-link {
	border: 0;
	background: transparent;
	padding: 14px 22px;
	font-size: 0.95rem;
	font-weight: 600;
	color: var(--lv-muted);
	cursor: pointer;
	border-bottom: 3px solid transparent;
	font-family: inherit;
}

.lv-tab-link:hover {
	color: var(--lv-primary);
}

.lv-tab-link.is-active {
	color: var(--lv-primary);
	border-bottom-color: var(--lv-primary);
	background: var(--lv-white);
}

.lv-tab-panel {
	display: none;
	padding: 24px;
}

.lv-tab-panel.is-active {
	display: block;
}

/* Spec table */
.lv-spec-table {
	width: 100%;
	border-collapse: collapse;
}

.lv-spec-table th,
.lv-spec-table td {
	border: 1px solid var(--lv-border-light);
	padding: 11px 14px;
	text-align: left;
	vertical-align: top;
	font-size: 0.92rem;
}

.lv-spec-table th {
	width: 30%;
	background: var(--lv-bg-soft);
	color: var(--lv-heading);
	font-weight: 600;
	white-space: normal;
}

.lv-spec-table tr:nth-child(even) td {
	background: #fbfcfd;
}

/* ==========================================================================
   12. Responsive product
   ========================================================================== */
@media (max-width: 900px) {
	.lv-product-grid {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	.lv-product-grid--sm {
		grid-template-columns: repeat(2, minmax(0, 1fr));
	}

	.lv-product-top {
		grid-template-columns: minmax(0, 1fr);
	}
}

@media (max-width: 560px) {
	.lv-product-grid,
	.lv-product-grid--sm {
		grid-template-columns: minmax(0, 1fr);
	}

	.lv-spec-table th {
		width: 40%;
	}
}