:root {
--primary: #0a2540;
--primary-light: #183b56;
--accent: #042588;
--accent-hover: #e85a26;
--blue-accent: #0077b6;
--light-bg: #f8fafc;
--dark-text: #1e293b;
--muted-text: #64748b;
--border-color: #e2e8f0;
--white: #ffffff;
--shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
--shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
--shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
--transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.hidden{display:none!important}
.clearfix{width:100%;clear:both}
.upper{text-transform:uppercase}
.cap{text-transform:capitalize}
.pt5{padding-top:5px!important}
.p15{padding:15px 0!important}
.pt15{padding-top:15px!important}
.pt25{padding-top:25px!important}
.pt35{padding-top:35px!important}
.pt50{padding-top:50px!important}
.pt75{padding-top:75px!important}
.p50{padding:50px 0!important}
.pb15{padding-bottom:15px!important}
.pb25{padding-bottom:25px!important}
.pb35{padding-bottom:35px!important}
.pb35{padding-bottom:35px!important}
.pb50{padding-bottom:50px!important}
.mb0{margin-bottom:0!important}
.mb30{margin-bottom:30px!important}
.mb35{margin-bottom:35px!important}
.mb8{margin-bottom:8px!important}
.mb15{margin-bottom:15px!important}
.mt0{margin-top:0!important}
.mt30{margin-top:30px!important}
.mt35{margin-top:35px!important}
.mt15{margin-top:15px!important}
.mt5{margin-top:15px!important}
.text-center{text-align:center!important}
.text-right{text-align:right!important}
.text-primary{color:var(--primary-color) !important}
.text-primary1{color:#002C68 !important}
.bg-primary{background:var(--primary-color) !important}
.bg-cover{background-size:cover;background-position:center center;}
.f25{font-size:2.5rem !important}
a{text-decoration:none;color: #e3b402;}
img,video{max-width:100%}
.linein1{display:-webkit-box;-webkit-line-clamp:1;-webkit-box-orient:vertical;overflow:hidden}
.linein2{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.linein3{display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden}
.linein4{display:-webkit-box;-webkit-line-clamp:4;-webkit-box-orient:vertical;overflow:hidden}
.upper{text-transform:uppercase}
.mobile-lg__drop{min-width:130px;}
.hd .mobile-content .flex .col .iwt .icon{color: #333;}
* {
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: 'Plus Jakarta Sans', sans-serif;
}

body {
color: var(--dark-text);
background-color: #fff;
line-height: 1.6;
overflow-x: hidden;
}

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

ul {
list-style: none;
}

img {
max-width: 100%;
height: auto;
display: block;
}

.container {
width: 100%;
max-width: 1280px;
margin: 0 auto;
padding: 0 24px;
}

/* --- TOPBAR --- */
.topbar {
background-color: var(--primary);
color: rgba(255, 255, 255, 0.8);
font-size: 13px;
padding: 10px 0;
border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.topbar .container {
display: flex;
justify-content: space-between;
align-items: center;
}

.topbar-info {
display: flex;
gap: 24px;
align-items: center;
}

.topbar-info i {
color: var(#f48004);
}

.topbar-right {
display: flex;
align-items: center;
gap: 20px;
}

.lang-select {
display: flex;
gap: 10px;
}

.lang-select a {
color: rgba(255, 255, 255, 0.6);
font-weight: 600;
}

.lang-select a.active, .lang-select a:hover {
color: var(--white);
}

.btn-quote-sm {
background: #E74E16;
color: var(--white);
padding: 6px 16px;
border-radius: 4px;
font-weight: 600;
font-size: 12px;
text-transform: uppercase;
letter-spacing: 0.5px;
}

.btn-quote-sm:hover {
background: var(--accent-hover);
transform: translateY(-2px);
}
/* Khung chứa cố định ở trên cùng màn hình khi cuộn */
.header-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: transform 0.3s ease;
}

/* Styling Topbar */
.topbar {
  background-color: #0b1a47;
  color: #fff;
  padding: 8px 0;
  overflow: hidden;
  max-height: 50px; /* Chiều cao tối đa của topbar khi hiện */
  opacity: 1;
  /* Tạo hiệu ứng trượt êm ái trong 0.4s */
  transition: max-height 0.4s ease, opacity 0.3s ease, padding 0.4s ease;
}

/* Class kích hoạt trạng thái ẩn Topbar */
.topbar.hide-topbar {
  max-height: 0;
  opacity: 0;
  padding-top: 0;
  padding-bottom: 0;
}

/* CSS cho Header chính bên dưới */
.main-header {
  background: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: 5px 0;
  margin-top: -2px;
}
.hide-topba .main-header {
  background: #fff;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  padding: 15px 0;
  margin-top: -2px;
}
/* --- HEADER & MENU --- */
header {
background: var(--white);
position: sticky;
top: 0;
z-index: 1000;
box-shadow: var(--shadow-sm);
}

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

.logo {
display: flex;
align-items: center;
gap: 10px;
font-size: 24px;
font-weight: 800;
color: var(--primary);
}
.logo-img {
height:75px
}

.logo i {
color: var(--accent);
font-size: 28px;
}

.nav-menu {
display: flex;
gap: 32px;
align-items: center;
}

.nav-item {
position: relative;
padding: 28px 0;
}

.nav-link {
font-weight: 600;
color: var(--primary);
font-size: 15px;
display: flex;
align-items: center;
gap: 6px;
text-transform: uppercase;
}

.nav-link:hover, .nav-item.active .nav-link {
color: var(--accent);
}

/* Dropdown Menu */
.dropdown {
position: absolute;
top: 100%;
left: 0;
width: 260px;
background: var(--white);
box-shadow: var(--shadow-lg);
border-radius: 8px;
padding: 12px 0;
opacity: 0;
visibility: hidden;
transform: translateY(15px);
transition: var(--transition);
border-top: 3px solid var(--accent);
}

.nav-item:hover .dropdown {
opacity: 1;
visibility: visible;
transform: translateY(0);
}

.dropdown li a {
padding: 10px 20px;
display: flex;
align-items: center;
gap: 10px;
font-size: 14px;
font-weight: 500;
color: var(--dark-text);
}

.dropdown li a:hover {
background: var(--light-bg);
color: var(--accent);
padding-left: 25px;
}

/* Mega Menu */
.mega-menu {
width: 750px;
left: -200px;
display: grid;
grid-template-columns: repeat(3, 1fr);
padding: 24px;
gap: 20px;
}

.mega-col h4 {
font-size: 14px;
text-transform: uppercase;
color: var(--accent);
margin-bottom: 12px;
letter-spacing: 0.5px;
border-bottom: 1px solid var(--border-color);
padding-bottom: 6px;
}

.mega-col ul li a {
padding: 8px 0;
}

.mega-col ul li a:hover {
padding-left: 6px;
background: none;
}

/* Mobile Menu Toggle */
.menu-toggle {
display: none;
font-size: 24px;
color: var(--primary);
cursor: pointer;
}

/* --- HERO SECTION WITH VIDEO --- */
.hero {
position: relative;
min-height: 100vh;
display: flex;
align-items: center;
color: var(--white);
padding: 135px 0;
overflow: hidden;
}

.hero-video {
position: absolute;
top: 50%;
left: 50%;
min-width: 100%;
min-height: 100%;
width: auto;
height: auto;
z-index: 1;
transform: translate(-50%, -50%);
object-fit: cover;
}

.hero-overlay {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: linear-gradient(rgba(10, 37, 64, 0.75), rgba(10, 37, 64, 0.85));
z-index: 2;
}

.hero .container {
position: relative;
z-index: 3;
}

.hero-content {
max-width: 650px;
padding-top:50px;
animation: fadeInUp 1s ease;
}

.badge-tag {
background: rgba(255, 107, 53, 0.2);
border: 1px solid #fff;
color: #fff;
padding: 6px 16px;
border-radius: 30px;
font-size: 13px;
font-weight: 700;
text-transform: uppercase;
display: inline-block;
margin-bottom: 20px;
}

.hero h1 {
font-size: 48px;
font-weight: 800;
line-height: 1.2;
margin-bottom: 20px;
}

.hero p {
font-size: 18px;
color: rgba(255, 255, 255, 0.9);
margin-bottom: 30px;
}

.btn-group {
display: flex;
gap: 16px;
}

.btn-yellow {
background: #E74E16;
color: var(--white);
padding: 14px 32px;
border-radius: 6px;
font-weight: 700;
font-size: 15px;
display: inline-flex;
align-items: center;
gap: 10px;
box-shadow: 0 10px 20px rgba(255, 107, 53, 0.3);
}

.btn-primary {
background: var(--accent);
color: var(--white);
padding: 14px 32px;
border-radius: 6px;
font-weight: 700;
font-size: 15px;
display: inline-flex;
align-items: center;
gap: 10px;
box-shadow: 0 10px 20px rgba(22, 41, 117, 0.3);
}

.btn-primary:hover {
background: var(--accent-hover);
transform: translateY(-3px);
box-shadow: 0 15px 25px rgba(255, 107, 53, 0.4);
}

.btn-secondary {
background: rgba(255, 255, 255, 0.15);
backdrop-filter: blur(10px);
color: var(--white);
padding: 14px 32px;
border-radius: 6px;
font-weight: 700;
font-size: 15px;
border: 1px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
background: var(--white);
color: var(--primary);
transform: translateY(-3px);
}

/* --- SECTION ABOUT --- */
.about-section {
padding: 100px 0 60px;
}

.about-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 60px;
align-items: center;
}

.about-images {
position: relative;
height: 480px;
}

.img-box {
position: absolute;
border-radius: 12px;
overflow: hidden;
box-shadow: var(--shadow-md);
transition: var(--transition);
}

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

.img-main {
width: 75%;
height: 360px;
top: 0;
left: 0;
z-index: 2;
}

.img-sub {
width: 60%;
height: 280px;
bottom: 0;
right: 0;
z-index: 3;
border: 6px solid var(--white);
}

.img-box:hover {
transform: scale(1.03) translateY(-8px);
box-shadow: var(--shadow-lg);
z-index: 4;
}

.img-box:hover img {
transform: scale(1.1);
}

.experience-badge {
position: absolute;
top: 40%;
left: -20px;
background: var(--accent);
color: var(--white);
padding: 20px;
border-radius: 12px;
z-index: 5;
text-align: center;
box-shadow: var(--shadow-md);
animation: float 3s ease-in-out infinite;
}

.experience-badge .num {
font-size: 32px;
font-weight: 800;
line-height: 1;
}

.experience-badge .txt {
font-size: 12px;
font-weight: 600;
text-transform: uppercase;
}

.section-subtitle {
color: var(--accent);
font-weight: 700;
text-transform: uppercase;
letter-spacing: 1px;
font-size: 16px;
margin-bottom: 8px;
display: block;
}

.section-title {
font-size: 36px;
font-weight: 800;
color: var(--primary);
line-height: 1.3;
margin-bottom: 20px;
}

.about-text p {
color: var(--muted-text);
margin-bottom: 24px;
font-size: 16px;
}

.stats-grid {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 20px;
margin-top: 30px;
padding-top: 30px;
border-top: 1px solid var(--border-color);
}

.stat-item h3 {
font-size: 32px;
font-weight: 800;
color: var(--primary);
}

.stat-item p {
font-size: 13px;
color: var(--muted-text);
margin-bottom: 0;
font-weight: 600;
}

/* --- SECTION SERVICES (OWL CAROUSEL) --- */
.services-section {
background: var(--light-bg);
padding: 100px 0;
}

.services-section .section-header {
text-align: center;
max-width: 650px;
margin: 0 auto 50px;
}

.services-section .service-card {
background: var(--white);
border-radius: 12px;
overflow: hidden;
box-shadow: var(--shadow-sm);
transition: var(--transition);
position: relative;
border: 1px solid var(--border-color);
margin: 10px 5px 20px;
}

.services-section .service-img {
height: 260px;
position: relative;
overflow: hidden;
}

.services-section .service-img img {
width: 100%;
height: 100%;
object-fit: cover;
transition: var(--transition);
}

.services-section .service-content {
padding: 35px 24px 24px;
}

.services-section .service-content h3 {
font-size: 20px;
font-weight: 700;
color: var(--primary);
margin-bottom: 12px;
}

.services-section .service-content p {
color: var(--muted-text);
font-size: 14px;
margin-bottom: 20px;
}

.services-section .service-link {
font-weight: 700;
color: var(--primary);
font-size: 14px;
display: inline-flex;
align-items: center;
gap: 8px;
}

.services-section .service-card:hover {
transform: translateY(-8px);
box-shadow: var(--shadow-lg);
border-color: rgba(255, 107, 53, 0.3);
}

.services-section .service-card:hover .service-img img {
transform: scale(1.12);
}

.services-section .service-card:hover .service-overlay {
opacity: 0.8;
background: linear-gradient(to top, rgba(255, 107, 53, 0.8), transparent);
}

.services-section .service-card:hover .service-icon-floating {
background: var(--primary);
transform: rotate(15deg) scale(1.1);
}

.services-section .service-card:hover .service-link {
color: var(--accent);
}

.owl-dots {
margin-top: 20px !important;
}

.owl-theme .owl-dots .owl-dot span {
width: 12px;
height: 12px;
background: #cbd5e1;
}

.owl-theme .owl-dots .owl-dot.active span, 
.owl-theme .owl-dots .owl-dot:hover span {
background: var(--accent);
}

.services-footer {
text-align: center;
margin-top: 40px;
}

/* --- SECTION WHY CHOOSE US --- */
.features-section {
padding: 100px 0;
background: var(--primary);
color: var(--white);
position: relative;
}

.features-section .section-title {
color: var(--white);
}

.features-grid {
display: grid;
grid-template-columns: repeat(4, 1fr);
gap: 24px;
margin-top: 50px;
}

.feature-box {
background: rgba(255, 255, 255, 0.05);
border: 1px solid rgba(255, 255, 255, 0.1);
padding: 32px 24px;
border-radius: 12px;
transition: var(--transition);
}

.feature-icon {
width: 60px;
height: 60px;
background: rgba(255, 107, 53, 0.2);
color: var(--accent);
border-radius: 10px;
display: flex;
align-items: center;
justify-content: center;
font-size: 26px;
margin-bottom: 20px;
transition: var(--transition);
}

.feature-box h3 {
font-size: 18px;
font-weight: 700;
margin-bottom: 12px;
}

.feature-box p {
color: rgba(255, 255, 255, 0.7);
font-size: 14px;
}

.feature-box:hover {
background: var(--white);
transform: translateY(-8px);
}

.feature-box:hover h3 {
color: var(--primary);
}

.feature-box:hover p {
color: var(--muted-text);
}

.feature-box:hover .feature-icon {
background: var(--accent);
color: var(--white);
transform: scale(1.1);
}

/* --- PROCESS SECTION --- */
.process-section {
padding: 100px 0;
}

.process-grid {
display: grid;
grid-template-columns: repeat(5, 1fr);
gap: 20px;
margin-top: 50px;
position: relative;
}

.process-card {
text-align: center;
position: relative;
z-index: 2;
}

.process-step {
width: 70px;
height: 70px;
background: var(--white);
border: 2px dashed var(--accent);
color: var(--accent);
border-radius: 50%;
display: flex;
align-items: center;
justify-content: center;
font-size: 22px;
font-weight: 800;
margin: 0 auto 20px;
transition: var(--transition);
box-shadow: var(--shadow-sm);
}

.process-card h4 {
font-size: 16px;
font-weight: 700;
color: var(--primary);
margin-bottom: 8px;
}

.process-card p {
font-size: 13px;
color: var(--muted-text);
}

.process-card:hover .process-step {
background: var(--accent);
color: var(--white);
border-style: solid;
transform: scale(1.15) rotate(360deg);
box-shadow: 0 0 20px rgba(22, 41, 117, 0.5);
}

/* --- FEATURED PROJECTS SECTION (DỰ ÁN NỔI BẬT) --- */
.projects-section {
padding: 100px 0;
background-color: var(--light-bg);
}

.projects-grid {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 30px;
margin-top: 50px;
}

.project-col {
display: flex;
flex-direction: column;
gap: 30px;
}

.project-card {
position: relative;
border-radius: 12px;
overflow: hidden;
box-shadow: var(--shadow-sm);
transition: var(--transition);
}

.project-card.large {
height: 380px;
}

.project-card.small {
height: 250px;
}

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

.project-info {
position: absolute;
bottom: 0;
left: 0;
right: 0;
padding: 24px;
background: linear-gradient(to top, rgba(10, 37, 64, 0.95), transparent);
color: var(--white);
transform: translateY(10px);
transition: var(--transition);
}

.project-time {
display: inline-block;
background: #E85A26;
color: var(--white);
padding: 3px 10px;
border-radius: 4px;
font-size: 12px;
font-weight: 600;
margin-bottom: 8px;
}

.project-title {
font-size: 18px;
font-weight: 700;
line-height: 1.4;
}

.project-card:hover {
box-shadow: var(--shadow-lg);
transform: translateY(-5px);
}

.project-card:hover img {
transform: scale(1.08);
}

.project-card:hover .project-info {
transform: translateY(0);
}

/* --- PARTNERS SECTION --- */
.partners-section {
padding: 60px 0;
background: var(--white);
border-top: 1px solid var(--border-color);
border-bottom: 1px solid var(--border-color);
}
.partners-carousel .item{background:#F2F2F7;border-radius:3px;padding:20px 5px}
.partners-flex {
display: flex;
justify-content: space-between;
align-items: center;
gap: 40px;
flex-wrap: wrap;
}

.partner-logo {
filter: grayscale(100%);
opacity: 0.6;
max-height: 45px;
}

.partner-logo:hover {
filter: grayscale(0%);
opacity: 1;
}

/* --- NEWS SECTION --- */
.news-section {
padding: 100px 0;
}

.news-grid {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 30px;
margin-top: 40px;
}

.news-card {
border-radius: 12px;
overflow: hidden;
box-shadow: var(--shadow-sm);
border: 1px solid var(--border-color);
transition: var(--transition);
}

.news-img {
height: 250px;
overflow: hidden;
position: relative;
}

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

.news-date {
position: absolute;
top: 15px;
left: 15px;
background: var(--accent);
color: var(--white);
padding: 4px 12px;
border-radius: 4px;
font-size: 12px;
font-weight: 700;
}

.news-content {
padding: 20px;
}

.news-content h3 {
font-size: 16px;
font-weight: 700;
color: var(--primary);
line-height: 1.4;
margin-bottom: 10px;
transition: var(--transition);
}

.news-content p {
color: var(--muted-text);
font-size: 13px;
margin-bottom: 15px;
}

.news-card:hover {
transform: translateY(-8px);
box-shadow: var(--shadow-md);
}

.news-card:hover .news-img img {
transform: scale(1.1);
}

.news-card:hover .news-content h3 {
color: var(--accent);
}

/* --- FOOTER --- */
footer {
background: var(--primary);
color: var(--white);
padding: 80px 0 0;
}

.footer-grid {
display: grid;
grid-template-columns: 2fr 1fr 1fr 1.5fr;
gap: 40px;
padding-bottom: 60px;
border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-about p {
color: rgba(255, 255, 255, 0.7);
font-size: 14px;
margin: 20px 0;
}
.footer-about p.f-logo-title{color:#fff;font-size:18px;font-weight:700}
.social-links {
display: flex;
gap: 12px;
}

.social-btn {
width: 38px;
height: 38px;
background: rgba(255, 255, 255, 0.1);
color: var(--white);
border-radius: 50%;
display: flex;
align-items: center;
justify-content: center;
transition: var(--transition);
}

.social-btn:hover {
background: var(--accent);
transform: translateY(-3px);
}

.footer-col h4 {
font-size: 18px;
font-weight: 700;
margin-bottom: 24px;
position: relative;
padding-bottom: 8px;
}

.footer-col h4::after {
content: '';
position: absolute;
bottom: 0;
left: 0;
width: 30px;
height: 2px;
background: #E85A26;
}

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

.footer-links a {
color: rgba(255, 255, 255, 0.7);
font-size: 14px;
transition: var(--transition);
}

.footer-links a:hover {
color: #E85A26;
padding-left: 6px;
}

.footer-contact li {
display: flex;
gap: 12px;
margin-bottom: 16px;
color: rgba(255, 255, 255, 0.7);
font-size: 14px;
}

.footer-contact i {
color: #E85A26;
margin-top: 4px;
}

.footer-bottom {
padding: 24px 0;
text-align: center;
color: rgba(255, 255, 255, 0.5);
font-size: 13px;
}

/* --- FLOATING ACTION BUTTONS --- */
.floating-cta {
position: fixed;
bottom: 30px;
right: 30px;
display: flex;
flex-direction: column;
gap: 12px;
z-index: 999;
}

.cta-icon {
width: 50px;
height: 50px;
border-radius: 50%;
background: #E85A26;
color: var(--white);
display: flex;
align-items: center;
justify-content: center;
font-size: 20px;
box-shadow: var(--shadow-lg);
transition: var(--transition);
cursor: pointer;
}

.cta-icon.phone {
background: #25d366;
animation: pulse 2s infinite;
}

.cta-icon:hover {
transform: scale(1.1);
}

/* --- ANIMATIONS --- */
@keyframes float {
0%, 100% { transform: translateY(0); }
50% { transform: translateY(-10px); }
}

@keyframes pulse {
0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
70% { box-shadow: 0 0 0 15px rgba(37, 211, 102, 0); }
100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

@keyframes fadeInUp {
from {
opacity: 0;
transform: translateY(30px);
}
to {
opacity: 1;
transform: translateY(0);
}
}

/* ==========================================
RESPONSIVE MEDIA QUERIES (MOBILE / TABLET)
========================================== */
@media (max-width: 1024px) {
.hero h1 { font-size: 38px; }
.features-grid { grid-template-columns: repeat(2, 1fr); }
.process-grid { grid-template-columns: repeat(3, 1fr); gap: 30px; }
.footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
.mega-menu { width: 100%; left: 0; grid-template-columns: 1fr; }
.projects-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
.topbar{display:none}
.topbar-info div:nth-child(2), 
.topbar-info div:nth-child(3) { display: none; }
.navbar { height: 70px; }
.menu-toggle { display: block; }
.logo-img {height: 65px;}
.nav-menu {
position: fixed;
top: 75px;
left: -100%;
width: 100%;
height: calc(100vh - 70px);
background: var(--white);
flex-direction: column;
gap: 0;
padding: 20px 0;
overflow-y: auto;
transition: var(--transition);
box-shadow: var(--shadow-md);
}

.nav-menu.active { left: 0; }

.nav-item {
width: 100%;
padding: 15px 24px;
border-bottom: 1px solid var(--border-color);
}

.dropdown {
position: static;
opacity: 1;
visibility: visible;
transform: none;
box-shadow: none;
width: 100%;
display: none;
padding: 10px 0 0 15px;
}

.nav-item:hover .dropdown { display: block; }

.hero { min-height: 60vh; padding: 60px 0; }
.hero h1 { font-size: 28px; }
.hero p { font-size: 15px; }
.experience-badge {top: 15%;}
.about-grid { grid-template-columns: 1fr; gap: 40px; }
.about-images { height: 350px; }
.img-main { width: 85%; height: 280px; }
.img-sub { width: 65%; height: 200px; }

.process-grid { grid-template-columns: 1fr; }
.projects-grid { grid-template-columns: 1fr; }
.news-grid { grid-template-columns: 1fr; }
.footer-grid { grid-template-columns: 1fr; }
.partners-flex { justify-content: center; gap: 20px; }

.btn-group { flex-direction: column; }
.btn-primary, .btn-secondary { width: 100%; justify-content: center; }
}
/* Styling cho nút Báo Giá ở Header */
.btn-quick-quote {
background-color: #ff5722; /* Màu cam nổi bật (tùy chỉnh theo brand) */
color: #fff;
padding: 10px 20px;
font-weight: bold;
border: none;
border-radius: 4px;
cursor: pointer;
transition: background-color 0.3s ease, transform 0.2s ease;
}

.btn-quick-quote:hover {
background-color: #e64a19;
transform: translateY(-2px);
}

/* Modal Overlay (Nền tối phủ toàn màn hình) */
.modal-overlay {
display: none; /* Mặc định ẩn */
position: fixed;
top: 0;
left: 0;
width: 100%;
height: 100%;
background-color: rgba(0, 0, 0, 0.6);
z-index: 9999; /* Đảm bảo đè lên mọi phần tử khác */
justify-content: center;
align-items: center;
opacity: 0;
transition: opacity 0.3s ease;
}

.modal-overlay.active {
display: flex;
opacity: 1;
}

/* Modal Box (Hộp thoại chính) */
.modal-content {
background: #fff;
width: 90%;
max-width: 500px;
padding: 30px;
border-radius: 8px;
position: relative;
box-shadow: 0 5px 15px rgba(0,0,0,0.3);
transform: translateY(-20px);
transition: transform 0.3s ease;
}

.modal-overlay.active .modal-content {
transform: translateY(0);
}

/* Nút Đóng (X) */
.close-btn {
position: absolute;
top: 15px;
right: 20px;
font-size: 28px;
font-weight: bold;
color: #aaa;
cursor: pointer;
transition: color 0.2s;
}

.close-btn:hover {
color: #333;
}

/* Typography & Form Elements */
.modal-header {
text-align: center;
margin-bottom: 20px;
}

.modal-header h3 {
margin: 0 0 5px 0;
color: #333;
font-size: 1.5rem;
}

.modal-header p {
margin: 0;
color: #666;
font-size: 0.9rem;
}

.form-group {
margin-bottom: 15px;
}

.form-group label {
display: block;
margin-bottom: 5px;
font-weight: 600;
font-size: 0.85rem;
color: #444;
}

.form-group input,
.form-group select,
.form-group textarea {
width: 100%;
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
font-size: 0.95rem;
box-sizing: border-box;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
outline: none;
border-color: #ff5722;
}

/* Nút Gửi */
.btn-submit {
width: 100%;
background-color: #ff5722;
color: #fff;
padding: 12px;
border: none;
border-radius: 4px;
font-size: 1rem;
font-weight: bold;
cursor: pointer;
transition: background-color 0.3s ease;
}

.btn-submit:hover {
background-color: #e64a19;
}
main{padding-top:135px}
/* CONTAINER PHỤ CHO NỘI DUNG THU GỌN */
.container-narrow {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 15px;
}

.sec-padding { padding: 80px 0; }
.bg-light { background-color: #f8f9fa; }

.sec-title {
  font-size: 2rem;
  color: #042588;
  text-transform: uppercase;
  font-weight: 700;
}

.title-line {
  width: 60px;
  height: 3px;
  background-color: #042588;
  margin: 15px 0 30px;
}
.title-line.center { margin: 15px auto 40px; }

/* BREADCRUMB STYLE */
.breadcrumb-sec { background: #f4f6f9; padding: 15px 0; border-bottom: 1px solid #e9ecef; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; font-size: 0.88rem; align-items: center; }
.breadcrumb li a { color: #555; text-decoration: none; transition: 0.2s; }
.breadcrumb li a:hover { color: #ff5722; }
.breadcrumb li.active { color: #042588; font-weight: 600; }
.breadcrumb i { font-size: 0.75rem; color: #aaa; }

/* LAYOUT GRID 2 CỘT */
.post-detail-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

/* MAIN ARTICLE STYLING */
.post-main-title { font-size: 2rem; color: #042588; line-height: 1.35; margin-bottom: 15px; font-weight: 700; }
.post-meta-bar { display: flex; flex-wrap: wrap; gap: 18px; font-size: 0.85rem; color: #777; padding-bottom: 15px; margin-bottom: 25px; border-bottom: 1px solid #eee; }
.post-meta-bar i { color: #ff5722; margin-right: 4px; }

.post-body { font-size: 1.05rem; line-height: 1.8; color: #333; }
.post-body .lead-text { font-size: 1.15rem; font-weight: 500; color: #444; border-left: 4px solid #ff5722; padding-left: 15px; margin-bottom: 25px; }
.post-body h2 { font-size: 1.45rem; color: #042588; margin: 35px 0 15px 0; scroll-margin-top: 20px; }
.post-body h3 { font-size: 1.2rem; color: #222; margin: 25px 0 12px 0; scroll-margin-top: 20px; }
.post-body p { margin-bottom: 18px; }
.post-body ul { padding-left: 20px; margin-bottom: 20px; }
.post-body li { margin-bottom: 8px; }

/* MỤC LỤC (TOC) STYLING */
.mobile-toc-wrapper { display: none; }
.toc-list { list-style: decimal;  padding: 0 0 0 15px; }
.toc-list li { margin-bottom: 8px; }
.toc-list li.toc-h2 { font-weight: 600; }
.toc-list li.toc-h3 { padding-left: 5px; font-size: 0.9rem; }
.toc-list a { color: #444; text-decoration: none; transition: 0.2s; display: block; line-height: 1.4; }
.toc-list a:hover, .toc-list a.active { color: #ff5722; }

/* BÀI VIẾT LIÊN QUAN */
.related-posts-sec { margin-top: 50px; padding-top: 30px; border-top: 2px solid #f0f0f0; }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.related-card { background: #fff; border-radius: 6px; overflow: hidden; border: 1px solid #eee; }
.related-card img { width: 100%; height: 140px; object-fit: cover; }
.related-info { padding: 12px; }
.related-info .date { font-size: 0.75rem; color: #999; }
.related-info h4 { font-size: 0.9rem; margin-top: 5px; line-height: 1.4; }
.related-info h4 a { color: #042588; text-decoration: none; }
.related-info h4 a:hover { color: #ff5722; }

/* SIDEBAR STYLING */
.right-sidebar { position: sticky; top: 20px; }
.sidebar-box { background: #fff; border-radius: 8px; padding: 20px; margin-bottom: 25px; border: 1px solid #eef0f5; box-shadow: 0 4px 12px rgba(0,0,0,0.03); }
.widget-title { font-size: 1.05rem; color: #042588;font-weight: 700; padding-bottom: 10px; margin-bottom: 15px; border-bottom: 2px solid #ff5722; display: flex; align-items: center; gap: 8px; }

/* Sidebar Post Lists */
.sidebar-post-list { display: flex; flex-direction: column; gap: 15px; }
.sidebar-post-item { display: flex; gap: 12px; align-items: flex-start; }
.sidebar-post-item img { width: 65px; height: 65px; border-radius: 6px; object-fit: cover; }
.sidebar-post-item h4 { font-size: 0.88rem; line-height: 1.35; margin-bottom: 4px; }
.sidebar-post-item h4 a { color: #333; text-decoration: none; transition: 0.2s; }
.sidebar-post-item h4 a:hover { color: #ff5722; }
.sidebar-post-item .views, .sidebar-post-item .date { font-size: 0.75rem; color: #888; }

/* Rank badge bài xem nhiều */
.rank-num { width: 24px; height: 24px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 0.8rem; font-weight: bold; color: #fff; flex-shrink: 0; }
.rank-1 { background: #ff3d00; }
.rank-2 { background: #ff9100; }
.rank-3 { background: #29b6f6; }
.default-content {text-align:justify}
.default-content p,.default-content div{padding:0 0 10px 0}
.default-content h2{font-weight: 500;color: #0A395B;}
.default-content img{max-width:100%;height:auto !important;}
.default-content table td,.default-content table th{border:#ccc solid 1px;padding:5px;}
/* RESPONSIVE */
@media (max-width: 992px) {
  .post-detail-layout { grid-template-columns: 1fr; }
  .right-sidebar { position: static; }
  .desktop-toc-wrapper { display: none; }
  .mobile-toc-wrapper { display: block; margin-bottom: 30px; }
  .related-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
main {padding-top: 80px;}
}
.link-page {text-align:center}
.link-page a{display:inline-block;line-height:38px;text-align:center;width: 38px;height: 38px;border-radius: 6px;border: 1px solid #ddd;color: #042588;text-decoration: none;font-weight: 600;transition: 0.3s;margin:5px}
.link-page a.pagecurrent,.link-page a:hover{color:#fff;background:#042588;border:#042588 solid 1px;}