/*
Theme Name: Thám Tử Elite Pro
Theme URI: https://thamtu24h.com.vn
Author: Detective Agency AI
Description: Giao diện website thám tử tư cao cấp chuẩn SEO 2026, tối ưu tốc độ, responsive 100%
Version: 2.1.0
*/

:root {
    --primary: #0a0e17;
    --secondary: #121826;
    --card-bg: #1a2235;
    --accent: #e94560;
    --accent-hover: #ff6b81;
    --gold: #f59e0b;
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --border: rgba(255, 255, 255, 0.08);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--primary);
    color: var(--text);
    line-height: 1.7;
    overflow-x: hidden;
}
a { color: var(--accent); text-decoration: none; transition: all 0.3s; }
a:hover { opacity: 0.85; color: var(--accent-hover); }

.container {
    max-width: 1240px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.site-header {
    background: rgba(10, 14, 23, 0.95);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border);
}
.header-top {
    background: rgba(0, 0, 0, 0.4);
    padding: 8px 0;
    font-size: 13px;
    color: var(--text-muted);
    border-bottom: 1px solid rgba(255,255,255,0.05);
}
.header-top .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.header-main {
    padding: 16px 0;
}
.header-main .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 22px;
    font-weight: 800;
    color: #fff;
}
.logo-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, var(--accent), #ff4757);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    box-shadow: 0 4px 15px rgba(233, 69, 96, 0.35);
}
.logo-title {
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: #fff;
}
.logo-sub {
    font-size: 11px;
    font-weight: 600;
    color: var(--gold);
    text-transform: uppercase;
    letter-spacing: 1px;
}
/* Universal list reset for header/nav components */
.nav-menu,
.nav-menu li,
.dropdown-menu,
.dropdown-menu li,
.mobile-nav-list,
.mobile-nav-list li {
    list-style: none !important;
    list-style-type: none !important;
    padding-left: 0;
    margin: 0;
}

.nav-menu {
    display: flex;
    gap: 8px;
    align-items: center;
    list-style: none !important;
    margin: 0;
    padding: 0;
}
.nav-menu .nav-link {
    color: var(--text);
    font-size: 14.5px;
    font-weight: 600;
    padding: 8px 12px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 4px;
    transition: all 0.2s ease;
    text-decoration: none;
}
.nav-menu .nav-link:hover {
    color: var(--accent);
    background: rgba(255,255,255,0.06);
}
.arrow-down {
    font-size: 11px;
    transition: transform 0.25s ease;
    opacity: 0.7;
}

/* Dropdown Navigation */
.has-dropdown {
    position: relative;
}
.has-dropdown:hover .arrow-down,
.has-dropdown:focus-within .arrow-down {
    transform: rotate(180deg);
    color: var(--accent);
    opacity: 1;
}
.dropdown-menu {
    display: none !important;
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 290px;
    background: #0f172a;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 12px;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5), 0 0 0 1px rgba(255, 255, 255, 0.05);
    padding: 8px 6px;
    list-style: none !important;
    list-style-type: none !important;
    margin: 0;
    opacity: 0;
    pointer-events: none;
    transform: translateY(8px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    z-index: 1000;
}
.has-dropdown:hover > .dropdown-menu,
.has-dropdown:focus-within > .dropdown-menu {
    display: block !important;
    opacity: 1 !important;
    pointer-events: auto !important;
    transform: translateY(0) !important;
}
.dropdown-menu li {
    margin: 2px 0;
    list-style: none !important;
}
.dropdown-menu li a {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    font-size: 13.5px;
    font-weight: 500;
    color: #cbd5e1;
    border-radius: 6px;
    text-decoration: none;
    transition: all 0.15s ease;
}
.dropdown-menu li a:hover {
    color: #fff;
    background: rgba(233, 69, 96, 0.2);
    transform: translateX(4px);
}

/* Hotline CTA */
.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}
.btn-hotline {
    background: linear-gradient(135deg, var(--accent), #ff4757);
    color: #fff !important;
    padding: 9px 18px;
    border-radius: 30px;
    font-weight: 700;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 15px rgba(233, 69, 96, 0.4);
    animation: pulse 2.2s infinite;
    text-decoration: none;
    white-space: nowrap;
}
@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(233,69,96,0.7); }
    70% { transform: scale(1.03); box-shadow: 0 0 0 12px rgba(233,69,96,0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(233,69,96,0); }
}

/* Mobile Toggle & Drawer */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    padding: 8px;
    cursor: pointer;
}
.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
}
.mobile-nav-drawer {
    display: none !important;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 999999;
}
.mobile-nav-drawer.active {
    display: block !important;
}
@media (min-width: 1025px) {
    .mobile-nav-drawer,
    .mobile-toggle {
        display: none !important;
    }
}
.mobile-nav-inner {
    position: absolute;
    top: 0;
    right: 0;
    width: 320px;
    max-width: 85%;
    height: 100%;
    background: #0f172a;
    overflow-y: auto;
    padding-bottom: 30px;
    border-left: 1px solid rgba(255, 255, 255, 0.1);
}
.mobile-nav-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    color: #fff;
}
.btn-close-mobile {
    background: transparent;
    border: none;
    color: #94a3b8;
    font-size: 20px;
    cursor: pointer;
}
.mobile-nav-list {
    list-style: none !important;
    list-style-type: none !important;
    padding: 10px 0;
    margin: 0;
}
.mobile-nav-list li {
    list-style: none !important;
    list-style-type: none !important;
}
.mobile-nav-list li a {
    display: block;
    padding: 10px 22px;
    color: #e2e8f0;
    font-size: 14.5px;
    text-decoration: none;
}
.mobile-nav-list li a:hover {
    color: var(--accent);
    background: rgba(255, 255, 255, 0.04);
}
.mobile-group-title {
    font-size: 11px;
    font-weight: 700;
    color: var(--gold);
    padding: 14px 22px 6px;
    letter-spacing: 1px;
}
@media (max-width: 1024px) {
    .nav-menu { display: none !important; }
    .mobile-toggle { display: flex !important; }
}

/* Card Button */
.card-btn {
    display: inline-block;
    margin-top: 12px;
    font-size: 13px;
    font-weight: 700;
    color: var(--accent);
    text-decoration: none;
    transition: all 0.2s;
}
.card-btn:hover {
    color: #fff;
    transform: translateX(4px);
}

/* Hero Section */
.hero-section {
    background: radial-gradient(circle at 80% 20%, rgba(233, 69, 96, 0.18), transparent 50%),
                linear-gradient(180deg, var(--secondary) 0%, var(--primary) 100%);
    padding: 80px 0 70px;
    border-bottom: 1px solid var(--border);
}
.hero-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: center;
}
.hero-badge {
    display: inline-block;
    background: rgba(233, 69, 96, 0.15);
    color: var(--accent);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 700;
    margin-bottom: 20px;
    border: 1px solid rgba(233, 69, 96, 0.3);
}
.hero-title {
    font-size: 44px;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 20px;
    background: linear-gradient(180deg, #ffffff, #cbd5e1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}
.hero-desc {
    font-size: 17px;
    color: var(--text-muted);
    margin-bottom: 30px;
    max-width: 600px;
}
.hero-actions {
    display: flex;
    gap: 16px;
    align-items: center;
}
.btn-primary {
    background: linear-gradient(135deg, var(--accent), #ff4757);
    color: #fff !important;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 16px;
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(233, 69, 96, 0.35);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn-outline {
    background: rgba(255,255,255,0.05);
    color: #fff !important;
    padding: 14px 28px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    border: 1px solid var(--border);
}
.hero-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}
.hero-card h3 {
    font-size: 20px;
    margin-bottom: 18px;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
}
.feature-list {
    list-style: none;
}
.feature-list li {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 15px;
    color: #e2e8f0;
}
.feature-list li:last-child {
    border-bottom: none;
}

/* Stats Bar */
.stats-bar {
    background: var(--secondary);
    padding: 30px 0;
    border-bottom: 1px solid var(--border);
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    text-align: center;
}
.stat-item h4 {
    font-size: 34px;
    font-weight: 800;
    color: var(--gold);
}
.stat-item p {
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
}

/* Section */
.section {
    padding: 70px 0;
}
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}
.section-badge {
    color: var(--accent);
    font-weight: 700;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 1.5px;
}
.section-title {
    font-size: 34px;
    font-weight: 800;
    margin: 10px 0 14px;
}
.section-desc {
    color: var(--text-muted);
    font-size: 16px;
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.service-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    transition: all 0.3s ease;
}
.service-card:hover {
    transform: translateY(-6px);
    border-color: var(--accent);
    box-shadow: 0 15px 35px rgba(0,0,0,0.5);
}
.service-icon {
    font-size: 38px;
    margin-bottom: 16px;
}
.service-card h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #fff;
}
.service-card p {
    color: var(--text-muted);
    font-size: 14.5px;
    line-height: 1.6;
}

/* Blog Posts Grid */
.posts-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.post-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: all 0.3s;
}
.post-card:hover {
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0,0,0,0.4);
}
.post-card-body {
    padding: 26px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.post-meta {
    font-size: 12px;
    color: var(--gold);
    margin-bottom: 10px;
    font-weight: 600;
}
.post-card h3 {
    font-size: 18px;
    line-height: 1.4;
    margin-bottom: 12px;
}
.post-card h3 a {
    color: #fff;
}
.post-card h3 a:hover {
    color: var(--accent);
}
.post-excerpt {
    color: var(--text-muted);
    font-size: 14px;
    margin-bottom: 18px;
    flex: 1;
    line-height: 1.6;
}
.post-link {
    color: var(--accent);
    font-weight: 600;
    font-size: 14px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* Single Post */
.single-container {
    max-width: 900px;
    margin: 40px auto;
    padding: 0 20px;
}
.single-header {
    margin-bottom: 30px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 20px;
}
.single-header h1 {
    font-size: 34px;
    line-height: 1.3;
    margin: 12px 0;
}
.single-content {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 14px;
    border: 1px solid var(--border);
    font-size: 17px;
    line-height: 1.85;
}
.single-content h2 {
    font-size: 24px;
    margin: 32px 0 14px;
    color: #fff;
    border-left: 4px solid var(--accent);
    padding-left: 14px;
}
.single-content h3 {
    font-size: 20px;
    margin: 24px 0 12px;
    color: #e2e8f0;
}
.single-content p {
    margin-bottom: 18px;
    color: #cbd5e1;
}
.single-content ul, .single-content ol {
    margin: 16px 0 18px 24px;
    color: #cbd5e1;
}
.single-content li {
    margin-bottom: 8px;
}
.single-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 24px 0;
}
.single-content th, .single-content td {
    padding: 12px 16px;
    border: 1px solid var(--border);
}
.single-content th {
    background: rgba(255,255,255,0.06);
    color: var(--gold);
}

/* Floating Action Button */
.floating-call {
    position: fixed;
    bottom: 25px;
    right: 25px;
    background: linear-gradient(135deg, var(--accent), #ff4757);
    color: #fff !important;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    box-shadow: 0 4px 25px rgba(233,69,96,0.5);
    z-index: 9999;
    animation: pulse 2s infinite;
}

/* Footer */
.site-footer {
    background: #06090e;
    border-top: 1px solid var(--border);
    padding: 60px 0 30px;
    margin-top: 70px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}
.footer-col h4 {
    font-size: 18px;
    margin-bottom: 18px;
    color: #fff;
    position: relative;
    padding-bottom: 8px;
}
.footer-col h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 35px;
    height: 2px;
    background: var(--accent);
}
.footer-col p {
    color: var(--text-muted);
    font-size: 14.5px;
    line-height: 1.8;
}
.footer-bottom {
    text-align: center;
    padding-top: 25px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 13px;
}

/* Post Thumbnail Styling */
.post-thumb {
    display: block;
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: #141c2e;
}
.post-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.4s ease;
}
.post-card:hover .post-thumb img {
    transform: scale(1.06);
}
.post-tag {
    position: absolute;
    top: 12px;
    left: 12px;
    background: rgba(233, 69, 96, 0.9);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    padding: 3px 10px;
    border-radius: 4px;
    letter-spacing: 0.5px;
    backdrop-filter: blur(4px);
}

/* Process Section */
.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}
.process-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px 22px;
    position: relative;
    transition: all 0.3s ease;
}
.process-card:hover {
    border-color: var(--gold);
    transform: translateY(-4px);
}
.process-step {
    font-size: 32px;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 12px;
    opacity: 0.9;
}
.process-card h3 {
    font-size: 17px;
    color: #fff;
    margin-bottom: 8px;
}
.process-card p {
    font-size: 13.5px;
    color: var(--text-muted);
    line-height: 1.6;
}

/* Pricing Grid */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.pricing-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 32px;
    position: relative;
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
}
.pricing-card:hover {
    transform: translateY(-4px);
}
.pricing-card.featured {
    border-color: var(--accent);
    box-shadow: 0 10px 30px rgba(233, 69, 96, 0.25);
}
.pricing-badge {
    position: absolute;
    top: -12px;
    right: 20px;
    background: var(--accent);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 20px;
    text-transform: uppercase;
}
.pricing-card h3 {
    font-size: 20px;
    color: #fff;
    margin-bottom: 10px;
}
.pricing-price {
    font-size: 28px;
    font-weight: 800;
    color: var(--gold);
    margin-bottom: 16px;
}
.pricing-price span {
    font-size: 14px;
    color: var(--text-muted);
    font-weight: 400;
}
.pricing-features {
    list-style: none;
    margin-bottom: 24px;
    flex: 1;
}
.pricing-features li {
    padding: 8px 0;
    font-size: 14px;
    color: #cbd5e1;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    display: flex;
    align-items: center;
    gap: 8px;
}
.pricing-features li:last-child {
    border-bottom: none;
}

/* Single Post Featured Image */
.single-featured-image {
    width: 100%;
    max-height: 440px;
    overflow: hidden;
    border-radius: 12px;
    margin-bottom: 30px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.3);
}
.single-featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* === BREADCRUMB NAVIGATION === */
.breadcrumb-nav {
    margin-bottom: 16px;
    font-size: 13px;
}
.breadcrumb-nav ol {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    padding: 0;
    margin: 0;
}
.breadcrumb-nav a {
    color: var(--text-muted);
}
.breadcrumb-nav a:hover {
    color: var(--accent);
}
.breadcrumb-nav .separator {
    color: rgba(255,255,255,0.2);
}
.breadcrumb-nav .current {
    color: var(--text);
    font-weight: 600;
}

/* === SINGLE META BAR === */
.single-meta-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
    margin: 14px 0 24px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    color: var(--text-muted);
}
.verified-badge {
    background: rgba(16, 185, 129, 0.15);
    color: #10b981;
    padding: 2px 8px;
    border-radius: 4px;
    font-weight: 700;
    font-size: 11.5px;
    border: 1px solid rgba(16, 185, 129, 0.3);
}

/* === TABLE OF CONTENTS (MỤC LỤC) === */
.toc-wrapper {
    background: rgba(26, 34, 53, 0.6);
    border: 1px solid rgba(0, 212, 170, 0.25);
    border-left: 4px solid var(--accent);
    border-radius: 10px;
    padding: 16px 20px;
    margin: 25px 0 35px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.15);
}
.toc-title-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
    font-size: 15px;
    color: #fff;
}
.toc-toggle {
    font-size: 12px;
    color: var(--accent);
    font-weight: 600;
}
.toc-content {
    margin-top: 14px;
    padding-top: 12px;
    border-top: 1px solid rgba(255,255,255,0.06);
}
.toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toc-list a {
    color: #cbd5e1;
    font-size: 13.5px;
    line-height: 1.5;
}
.toc-list a:hover {
    color: var(--accent);
    text-decoration: underline;
}
.toc-main {
    font-weight: 600;
}
.toc-sub {
    margin-left: 20px;
    font-size: 13px;
    color: var(--text-muted);
}

/* === ARTICLE CONTENT FORMATTING (TABLES, CALLOUTS) === */
.single-content table {
    width: 100%;
    border-collapse: collapse;
    margin: 25px 0;
    background: rgba(26, 34, 53, 0.5);
    border-radius: 8px;
    overflow: hidden;
    font-size: 14px;
}
.single-content th, .single-content td {
    padding: 12px 16px;
    border: 1px solid var(--border);
    text-align: left;
}
.single-content th {
    background: rgba(233, 69, 96, 0.15);
    color: #fff;
    font-weight: 700;
}
.single-content blockquote {
    margin: 25px 0;
    padding: 16px 22px;
    background: rgba(245, 158, 11, 0.08);
    border-left: 4px solid var(--gold);
    border-radius: 0 8px 8px 0;
    font-style: italic;
    color: #e2e8f0;
}

/* === RATING BOX === */
.article-rating-box {
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 16px;
    margin: 35px 0 25px;
    display: flex;
    align-items: center;
    gap: 16px;
}
.rating-stars {
    font-size: 20px;
    letter-spacing: 2px;
}
.rating-text {
    font-size: 13.5px;
    color: #cbd5e1;
}

/* === AUTHOR E-E-A-T CARD === */
.author-eeat-card {
    display: flex;
    gap: 18px;
    background: linear-gradient(135deg, rgba(26, 34, 53, 0.8), rgba(15, 23, 42, 0.9));
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 22px;
    margin: 35px 0;
    box-shadow: 0 4px 20px rgba(0,0,0,0.25);
}
.author-avatar-badge {
    position: relative;
    flex-shrink: 0;
}
.avatar-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--accent), #ff4757);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    box-shadow: 0 4px 15px rgba(233, 69, 96, 0.35);
}
.verified-icon {
    position: absolute;
    bottom: -2px;
    right: -2px;
    width: 20px;
    height: 20px;
    background: #10b981;
    color: #fff;
    border-radius: 50%;
    font-size: 11px;
    font-weight: 900;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--primary);
}
.author-role {
    font-size: 10.5px;
    font-weight: 800;
    color: var(--gold);
    letter-spacing: 1px;
    text-transform: uppercase;
}
.author-name {
    font-size: 18px;
    color: #fff;
    margin: 4px 0 8px;
}
.author-bio {
    font-size: 13.5px;
    color: var(--text-muted);
    line-height: 1.6;
    margin: 0;
}

/* === CTA CONTACT BOX === */
.cta-contact-box {
    background: linear-gradient(135deg, rgba(233,69,96,0.12), rgba(0,0,0,0.4));
    border: 1px solid rgba(233,69,96,0.35);
    border-radius: 12px;
    padding: 24px;
    margin: 30px 0;
}
.cta-contact-box h4 {
    color: var(--accent);
    margin-bottom: 10px;
    font-size: 18px;
}
.cta-contact-box p {
    margin: 0;
    color: #e2e8f0;
    font-size: 14.5px;
}
.cta-phone {
    color: #fff !important;
    font-weight: 800;
    text-decoration: underline;
}

/* === RELATED POSTS SILO === */
.related-posts-section {
    margin-top: 45px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}
.related-title {
    font-size: 20px;
    color: #fff;
    margin-bottom: 20px;
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
}
.related-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    transition: all 0.3s;
}
.related-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
}
.related-thumb {
    width: 100%;
    height: 140px;
    overflow: hidden;
}
.related-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.3s;
}
.related-card:hover .related-thumb img {
    transform: scale(1.05);
}
.related-info {
    padding: 14px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    flex: 1;
}
.related-info h4 {
    font-size: 14px;
    color: #fff;
    line-height: 1.4;
    margin-bottom: 8px;
}
.related-date {
    font-size: 11px;
    color: var(--text-muted);
}

@media (max-width: 900px) {
    .hero-grid, .services-grid, .posts-grid, .stats-grid, .footer-grid, .process-grid, .pricing-grid, .related-grid {
        grid-template-columns: 1fr;
    }
    .hero-title { font-size: 32px; }
    .nav-menu { display: none; }
    .author-eeat-card { flex-direction: column; }
}

/* === RICH ARTICLE ELEMENTS (CHẤT LƯỢNG CAO NHẤT 2026) === */

/* Key Takeaways Box (Tóm tắt cốt lõi) */
.elite-takeaways {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.08), rgba(6, 78, 59, 0.2));
    border: 1px solid rgba(16, 185, 129, 0.35);
    border-left: 5px solid #10b981;
    border-radius: 10px;
    padding: 20px 24px;
    margin: 25px 0 35px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}
.takeaways-header {
    font-size: 15.5px;
    font-weight: 700;
    color: #34d399;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.elite-takeaways ul {
    margin: 0;
    padding-left: 20px;
    color: #e2e8f0;
    font-size: 14.5px;
    line-height: 1.7;
}
.elite-takeaways li {
    margin-bottom: 6px;
}

/* Elite Structured Table (Google Featured Snippets) */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    margin: 30px 0;
    border-radius: 10px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.25);
}
.elite-table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(15, 23, 42, 0.8);
    font-size: 14px;
    text-align: left;
}
.elite-table thead tr {
    background: linear-gradient(135deg, #1e293b, #0f172a);
    border-bottom: 2px solid var(--accent);
}
.elite-table th {
    padding: 14px 18px;
    font-weight: 700;
    color: var(--gold);
    text-transform: uppercase;
    font-size: 12.5px;
    letter-spacing: 0.5px;
}
.elite-table td {
    padding: 14px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    color: #cbd5e1;
    line-height: 1.6;
}
.elite-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

/* Expert Checklist Box */
.expert-checklist-box {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.08), rgba(30, 58, 138, 0.15));
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-left: 5px solid #3b82f6;
    border-radius: 10px;
    padding: 20px 24px;
    margin: 30px 0;
}
.expert-checklist-box h4 {
    margin: 0 0 14px;
    color: #60a5fa;
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}
.expert-checklist-box ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.expert-checklist-box li {
    padding: 8px 0;
    color: #e2e8f0;
    font-size: 14px;
    line-height: 1.6;
    display: flex;
    align-items: flex-start;
    gap: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}
.expert-checklist-box li:last-child {
    border-bottom: none;
}
.expert-checklist-box li::before {
    content: "✓";
    color: #10b981;
    font-weight: 900;
    font-size: 15px;
}

/* FAQ Section */
.elite-faq-section {
    margin: 35px 0;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 24px;
}
.elite-faq-section h3 {
    margin: 0 0 18px;
    font-size: 18px;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 8px;
}
.faq-item {
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.faq-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}
.faq-item strong {
    display: block;
    color: #f1f5f9;
    font-size: 14.5px;
    margin-bottom: 6px;
}
.faq-item p {
    margin: 0;
    color: var(--text-muted);
    font-size: 13.5px;
    line-height: 1.6;
}

/* Internal Link Silo Box */
.elite-silo-box {
    margin: 25px 0;
    padding: 14px 18px;
    background: rgba(99, 102, 241, 0.08);
    border-left: 4px solid #6366f1;
    border-radius: 8px;
    font-size: 14px;
    color: #e2e8f0;
}
.elite-silo-box a {
    color: #818cf8 !important;
    font-weight: 700;
    text-decoration: underline;
}

/* PBN Expert Callout PRO Box */
.pbn-expert-callout {
    margin: 30px 0;
    padding: 22px 26px;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.12), rgba(15, 23, 42, 0.95));
    border: 1px solid rgba(16, 185, 129, 0.35);
    border-left: 5px solid #10b981;
    border-radius: 10px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}
.pbn-expert-callout a {
    color: #34d399 !important;
    text-decoration: underline;
    font-weight: 700;
}

/* PBN Citation Footer Box */
.pbn-citation-footer {
    margin-top: 35px;
    padding: 20px 24px;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid rgba(99, 102, 241, 0.3);
    border-left: 4px solid #6366f1;
    border-radius: 8px;
}
.pbn-citation-footer a {
    color: #818cf8 !important;
    font-weight: 700;
    text-decoration: underline;
}