/* ============================================
   AVA Vietnam - Professional Redesign
   ============================================ */

/* === Reset & Base === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #0a2240;
    --primary-light: #133a6a;
    --accent: #c8a04e;
    --accent-light: #dbb964;
    --white: #ffffff;
    --off-white: #f8f9fb;
    --gray-100: #f1f3f6;
    --gray-200: #e2e6ec;
    --gray-300: #c5cbd6;
    --gray-600: #5a6578;
    --gray-800: #2d3545;
    --text: #1a1f2b;
    --text-light: #5a6578;
    --shadow-sm: 0 2px 8px rgba(10, 34, 64, 0.06);
    --shadow-md: 0 8px 30px rgba(10, 34, 64, 0.1);
    --shadow-lg: 0 20px 60px rgba(10, 34, 64, 0.12);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--text);
    line-height: 1.7;
    background: var(--white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', Georgia, serif;
    line-height: 1.3;
    color: var(--primary);
}

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

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

ul {
    list-style: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* === Preloader === */
#preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--primary);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#preloader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.loader-ring {
    width: 80px;
    height: 80px;
    border: 3px solid rgba(200, 160, 78, 0.2);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.loader-text {
    position: absolute;
    font-family: 'Playfair Display', serif;
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 3px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* === Header === */
#header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
}

#header.scrolled {
    background: rgba(10, 34, 64, 0.97);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

#header.scrolled .header-top {
    max-height: 0;
    padding: 0;
    opacity: 0;
    overflow: hidden;
}

.header-top {
    background: rgba(0, 0, 0, 0.2);
    padding: 8px 0;
    font-size: 13px;
    transition: var(--transition);
    max-height: 50px;
    opacity: 1;
}

.header-top-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-contact-info {
    display: flex;
    gap: 24px;
}

.header-contact-info a {
    color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    gap: 6px;
}

.header-contact-info a:hover {
    color: var(--accent);
}

.header-social {
    display: flex;
    gap: 12px;
    align-items: center;
}

.header-social a {
    color: rgba(255, 255, 255, 0.8);
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    font-size: 12px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.header-social a:hover {
    color: var(--accent);
    border-color: var(--accent);
}

.lang-switch {
    font-weight: 600;
    font-size: 12px !important;
    letter-spacing: 1px;
}

.navbar {
    padding: 16px 0;
    transition: var(--transition);
}

#header.scrolled .navbar {
    padding: 10px 0;
}

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

.logo img {
    height: 42px;
    background: var(--white);
    padding: 6px 14px;
    border-radius: 6px;
    transition: var(--transition);
    object-fit: contain;
}

#header.scrolled .logo img {
    height: 36px;
    padding: 5px 12px;
}

.nav-menu {
    display: flex;
    gap: 8px;
}

.nav-menu > li > a {
    color: rgba(255, 255, 255, 0.9);
    font-size: 15px;
    font-weight: 500;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav-menu > li > a i {
    font-size: 10px;
    transition: var(--transition);
}

.nav-menu > li > a:hover,
.nav-menu > li > a.active {
    color: var(--white);
    background: rgba(255, 255, 255, 0.1);
}

.nav-menu > li > a.active {
    color: var(--accent);
}

/* Dropdown */
.has-dropdown {
    position: relative;
}

.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 240px;
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    padding: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
}

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

.has-dropdown:hover > a i {
    transform: rotate(180deg);
}

.dropdown li a {
    display: block;
    padding: 10px 16px;
    color: var(--text);
    font-size: 14px;
    border-radius: var(--radius-sm);
}

.dropdown li a:hover {
    background: var(--gray-100);
    color: var(--primary);
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* === Hero Section === */
#hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
}

.hero-slider {
    position: relative;
    width: 100%;
    height: 100%;
}

.hero-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1s ease;
}

.hero-slide.active {
    opacity: 1;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 34, 64, 0.92) 0%, rgba(19, 58, 106, 0.8) 50%, rgba(10, 34, 64, 0.7) 100%);
}

.hero-slide .container {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}

.hero-content {
    max-width: 700px;
    padding-top: 80px;
}

.hero-badge {
    display: inline-block;
    background: rgba(200, 160, 78, 0.15);
    color: var(--accent);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.5px;
    border: 1px solid rgba(200, 160, 78, 0.3);
    margin-bottom: 24px;
}

.hero-content h1 {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
    color: var(--white);
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-content h1 span {
    color: var(--accent);
}

.hero-content p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 18px;
    margin-bottom: 36px;
    max-width: 560px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 15px;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

.btn-primary {
    background: var(--accent);
    color: var(--primary);
    border-color: var(--accent);
}

.btn-primary:hover {
    background: var(--accent-light);
    border-color: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(200, 160, 78, 0.3);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.4);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--white);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 16px;
}

/* Hero Controls */
.hero-controls {
    position: absolute;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 20px;
    z-index: 10;
}

.hero-prev, .hero-next {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    background: rgba(255, 255, 255, 0.05);
    color: var(--white);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 14px;
}

.hero-prev:hover, .hero-next:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--white);
}

.hero-dots {
    display: flex;
    gap: 8px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.5);
    background: transparent;
    cursor: pointer;
    transition: var(--transition);
}

.dot.active {
    background: var(--accent);
    border-color: var(--accent);
    transform: scale(1.2);
}

.hero-scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
}

.hero-scroll-indicator a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 20px;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-8px); }
    60% { transform: translateY(-4px); }
}

/* === Stats Section === */
#stats {
    background: var(--primary);
    padding: 50px 0;
    position: relative;
}

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

.stat-item {
    position: relative;
    padding: 10px 0;
}

.stat-item:not(:last-child)::after {
    content: '';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 60%;
    background: rgba(255, 255, 255, 0.15);
}

.stat-icon {
    font-size: 28px;
    color: var(--accent);
    margin-bottom: 12px;
}

.stat-number {
    font-family: 'Playfair Display', serif;
    font-size: 3rem;
    font-weight: 700;
    color: var(--white);
    line-height: 1;
    margin-bottom: 8px;
}

.stat-number::after {
    content: '+';
    font-size: 0.6em;
    color: var(--accent);
}

.stat-label {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* === About Section === */
#about {
    padding: 100px 0;
    background: var(--white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-images {
    position: relative;
}

.about-img-main {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-img-main img {
    width: 100%;
    height: 420px;
    object-fit: cover;
}

.about-img-secondary {
    position: absolute;
    bottom: -30px;
    right: -30px;
    width: 200px;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 5px solid var(--white);
}

.about-img-secondary img {
    width: 100%;
    height: 160px;
    object-fit: cover;
}

.about-experience-badge {
    position: absolute;
    top: -20px;
    left: -20px;
    width: 120px;
    height: 120px;
    background: var(--accent);
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    z-index: 2;
}

.exp-number {
    font-family: 'Playfair Display', serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
}

.exp-text {
    font-size: 12px;
    font-weight: 600;
    color: var(--primary);
    text-align: center;
    line-height: 1.3;
}

.section-subtitle {
    display: inline-block;
    color: var(--accent);
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 12px;
    font-family: 'Inter', sans-serif;
}

.section-subtitle.light {
    color: var(--accent);
}

.section-title {
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    color: var(--primary);
    margin-bottom: 20px;
}

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

.section-desc {
    color: var(--text-light);
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto 50px;
}

.section-header.text-center {
    text-align: center;
    margin-bottom: 50px;
}

.about-description {
    color: var(--text-light);
    font-size: 16px;
    margin-bottom: 16px;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin: 28px 0;
}

.about-feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    font-weight: 500;
}

.about-feature i {
    color: var(--accent);
    font-size: 16px;
}

.about-partners {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 28px;
    padding-top: 28px;
    border-top: 1px solid var(--gray-200);
}

.about-partners span {
    font-size: 14px;
    font-weight: 600;
    color: var(--gray-600);
}

.partner-logo {
    height: 40px;
    opacity: 0.8;
    transition: var(--transition);
}

.partner-logo:hover {
    opacity: 1;
}

/* === Services Section === */
#services {
    padding: 100px 0;
    background: var(--off-white);
}

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

.service-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 36px 28px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--gray-200);
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    color: var(--accent);
    margin-bottom: 24px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    color: var(--primary);
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--primary);
}

.service-card > p {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 20px;
    line-height: 1.6;
}

.service-list {
    margin-bottom: 24px;
    flex-grow: 1;
}

.service-list li {
    position: relative;
    padding-left: 18px;
    font-size: 13px;
    color: var(--gray-600);
    margin-bottom: 8px;
    line-height: 1.5;
}

.service-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
}

.service-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    color: var(--primary);
    font-size: 14px;
    font-weight: 600;
}

.service-link:hover {
    color: var(--accent);
    gap: 10px;
}

/* === Why Us Section === */
#why-us {
    padding: 100px 0;
    position: relative;
    overflow: hidden;
}

.why-us-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.why-us-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 34, 64, 0.95), rgba(19, 58, 106, 0.9));
}

#why-us .container {
    position: relative;
    z-index: 2;
}

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

.why-us-item {
    text-align: center;
    padding: 40px 24px;
    border-radius: var(--radius);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

.why-us-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-5px);
}

.why-us-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 20px;
    background: rgba(200, 160, 78, 0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    color: var(--accent);
}

.why-us-item h4 {
    color: var(--white);
    font-size: 1.15rem;
    margin-bottom: 12px;
}

.why-us-item p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
    line-height: 1.7;
}

/* === News Section === */
#news {
    padding: 100px 0;
    background: var(--white);
}

.news-tabs {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 40px;
}

.news-tab {
    padding: 10px 28px;
    border: 2px solid var(--gray-200);
    border-radius: 50px;
    background: transparent;
    color: var(--text-light);
    font-size: 14px;
    font-weight: 600;
    font-family: 'Inter', sans-serif;
    cursor: pointer;
    transition: var(--transition);
}

.news-tab:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.news-tab.active {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

.news-grid {
    display: none;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-grid.active {
    display: grid;
}

.news-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.news-card-img {
    position: relative;
    height: 200px;
    overflow: hidden;
}

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

.news-card:hover .news-card-img img {
    transform: scale(1.05);
}

.news-category {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 4px 14px;
    background: var(--accent);
    color: var(--primary);
    font-size: 12px;
    font-weight: 700;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.news-card-body {
    padding: 24px;
}

.news-card-body time {
    color: var(--gray-600);
    font-size: 13px;
    font-weight: 500;
}

.news-card-body h4 {
    font-size: 1rem;
    margin: 8px 0 12px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card-body h4 a:hover {
    color: var(--accent);
}

.news-card-body p {
    color: var(--text-light);
    font-size: 14px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* === CTA Section === */
#cta {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
}

.cta-content {
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    color: var(--primary);
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    margin-bottom: 16px;
}

.cta-content p {
    color: var(--primary-light);
    font-size: 16px;
    margin-bottom: 32px;
    opacity: 0.8;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

#cta .btn-primary {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

#cta .btn-primary:hover {
    background: var(--primary-light);
    box-shadow: 0 8px 25px rgba(10, 34, 64, 0.3);
}

#cta .btn-outline {
    color: var(--primary);
    border-color: var(--primary);
}

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

/* === Contact / Offices === */
#contact {
    padding: 100px 0;
    background: var(--off-white);
}

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

.office-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 32px 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    text-align: center;
}

.office-card:first-child {
    border-top: 3px solid var(--accent);
}

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

.office-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    background: var(--gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
    color: var(--primary);
}

.office-card:first-child .office-icon {
    background: var(--accent);
    color: var(--primary);
}

.office-card h4 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--primary);
}

.office-card p {
    font-size: 13px;
    color: var(--gray-600);
    margin-bottom: 8px;
    line-height: 1.6;
}

.office-card p i {
    color: var(--accent);
    margin-right: 8px;
    width: 16px;
    text-align: center;
}

/* === Footer === */
.footer-main {
    background: var(--primary);
    padding: 60px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
}

.footer-logo {
    height: 42px;
    background: var(--white);
    padding: 6px 14px;
    border-radius: 6px;
    margin-bottom: 20px;
    object-fit: contain;
}

.footer-about p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    line-height: 1.7;
    margin-bottom: 20px;
}

.footer-social {
    display: flex;
    gap: 10px;
}

.footer-social a {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--primary);
}

.footer-col h4 {
    color: var(--white);
    font-size: 1rem;
    margin-bottom: 20px;
    font-family: 'Inter', sans-serif;
    font-weight: 700;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--accent);
    padding-left: 4px;
}

.footer-contact li {
    display: flex;
    gap: 10px;
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.footer-contact li i {
    color: var(--accent);
    margin-top: 4px;
    flex-shrink: 0;
}

.footer-contact li a {
    color: rgba(255, 255, 255, 0.6);
}

.footer-contact li a:hover {
    color: var(--accent);
}

.footer-bottom {
    background: rgba(0, 0, 0, 0.2);
    padding: 20px 0;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.4);
    font-size: 13px;
}

/* === Back to Top === */
#back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--primary);
    color: var(--accent);
    border: none;
    cursor: pointer;
    font-size: 18px;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: var(--transition);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
}

#back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

#back-to-top:hover {
    background: var(--accent);
    color: var(--primary);
    transform: translateY(-3px);
}

/* === Scroll Reveal Animation === */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* === Responsive === */
@media (max-width: 1024px) {
    .services-grid,
    .why-us-grid,
    .offices-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-grid {
        gap: 50px;
    }
}

@media (max-width: 768px) {
    .header-top {
        display: none;
    }

    .mobile-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: var(--primary);
        flex-direction: column;
        padding: 80px 24px 24px;
        gap: 4px;
        transition: var(--transition);
        box-shadow: -10px 0 30px rgba(0, 0, 0, 0.3);
        z-index: 1001;
    }

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

    .nav-menu > li > a {
        padding: 12px 16px;
        font-size: 16px;
    }

    .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        background: rgba(255, 255, 255, 0.05);
        border-radius: var(--radius-sm);
        margin-top: 4px;
        padding: 4px;
    }

    .dropdown li a {
        color: rgba(255, 255, 255, 0.7);
        font-size: 14px;
    }

    .dropdown li a:hover {
        background: rgba(255, 255, 255, 0.1);
        color: var(--white);
    }

    .logo img {
        height: 34px;
        padding: 5px 10px;
    }

    #about, #services, #news, #contact {
        padding: 60px 0;
    }

    #why-us {
        padding: 60px 0;
    }

    #cta {
        padding: 50px 0;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-images {
        max-width: 100%;
        margin: 0 auto;
    }

    .about-img-main img {
        height: 280px;
    }

    .about-img-secondary {
        width: 160px;
        right: -10px;
        bottom: -20px;
    }

    .about-img-secondary img {
        height: 120px;
    }

    .about-experience-badge {
        width: 100px;
        height: 100px;
        top: -15px;
        left: -10px;
    }

    .exp-number {
        font-size: 1.8rem;
    }

    .section-header.text-center {
        margin-bottom: 30px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .stat-item:nth-child(2)::after {
        display: none;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .services-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .service-card {
        padding: 28px 22px;
    }

    .why-us-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .why-us-item {
        padding: 30px 20px;
    }

    .offices-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .news-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .news-tabs {
        flex-wrap: wrap;
        gap: 6px;
    }

    .news-tab {
        padding: 8px 20px;
        font-size: 13px;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .hero-controls {
        bottom: 60px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

    .hero-content {
        padding-top: 60px;
    }

    .hero-badge {
        font-size: 12px;
        padding: 6px 16px;
    }

    .hero-content p {
        font-size: 15px;
    }
}

@media (max-width: 1024px) {
    .why-us-bg {
        background-attachment: scroll;
    }
}

@media (max-width: 480px) {
    .stat-number {
        font-size: 2.2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        justify-content: center;
        width: 100%;
    }
}