/* =========================================================================
   VARIABLES & DESIGN SYSTEM (BUSINESS THEME)
   ========================================================================= */
:root {
    /* Color Palette - Blue/Gold/White */
    --primary: #0A3D62;
    /* Deep Navy Blue - Trust, Business */
    --primary-light: #165b8f;
    --primary-dark: #05243d;
    --secondary: #F39C12;
    /* Elegant Golden Orange */
    --secondary-hover: #D68910;

    --bg-light: #F8FAFC;
    --bg-white: #FFFFFF;
    --bg-dark: #1E272E;

    --text-main: #2C3E50;
    --text-muted: #7F8C8D;
    --text-light: #ECF0F1;

    --border-color: #EAECEE;

    /* Typography */
    --font-heading: 'Roboto', 'Segoe UI', Arial, sans-serif;
    --font-body: 'Open Sans', 'Segoe UI', Arial, sans-serif;

    /* Box Shadows (Glassmorphism / Soft UI) */
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 20px 40px rgba(10, 61, 98, 0.15);
    --shadow-hover: 0 15px 30px rgba(10, 61, 98, 0.2);

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);

    /* Container */
    --container-max: 1200px;
}

/* =========================================================================
   RESET & BASE
   ========================================================================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    color: var(--text-main);
    background-color: var(--bg-white);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    color: var(--primary);
    line-height: 1.2;
    margin-bottom: 1rem;
}

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

ul {
    list-style: none;
}

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

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 5%;
}

.section {
    padding: 80px 0;
}

.bg-light {
    background-color: var(--bg-light);
}

.bg-dark {
    background-color: var(--bg-dark);
}

.text-white {
    color: var(--bg-white);
}

.text-light {
    color: var(--text-light);
}

.center {
    text-align: center;
}

.relative {
    position: relative;
}

.z-10 {
    z-index: 10;
}

.highlight {
    color: var(--secondary);
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
}

.title-underline {
    height: 4px;
    width: 60px;
    background-color: var(--secondary);
    border-radius: 2px;
    margin-bottom: 1.5rem;
}

.title-underline.center {
    margin: 0 auto 1.5rem auto;
}

.bg-dark .section-title {
    color: #fff;
}

.section-subtitle {
    max-width: 700px;
    margin: 0 auto 3rem auto;
    color: var(--text-muted);
    font-size: 1.1rem;
}

.box-shadow {
    box-shadow: var(--shadow-md);
    border-radius: 12px;
    background: var(--bg-white);
}

/* =========================================================================
   BUTTONS
   ========================================================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn-lg {
    padding: 15px 35px;
    font-size: 1.1rem;
}

.btn-block {
    display: flex;
    width: 100%;
}

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

.btn-primary:hover {
    background-color: var(--primary-light);
    box-shadow: 0 8px 20px rgba(10, 61, 98, 0.3);
    transform: translateY(-2px);
    color: white;
    /* Ensure text stays white on hover */
}

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

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

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

.btn-white:hover {
    background-color: var(--bg-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(255, 255, 255, 0.2);
}

.shine-effect::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 50%;
    height: 100%;
    background: linear-gradient(to right, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.3) 50%, rgba(255, 255, 255, 0) 100%);
    transform: skewX(-20deg);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% {
        left: -100%;
    }

    20% {
        left: 200%;
    }

    100% {
        left: 200%;
    }
}

/* =========================================================================
   HEADER & NAVIGATION
   ========================================================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
    padding: 15px 0;
}

.header.scrolled {
    padding: 10px 0;
    box-shadow: var(--shadow-md);
}

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

.logo a {
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}

.logo i {
    color: var(--secondary);
    font-size: 1.8rem;
}

.nav-list {
    display: flex;
    gap: 30px;
}

.nav-link {
    font-weight: 600;
    color: var(--text-main);
    position: relative;
    padding: 5px 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary);
    transition: var(--transition);
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary);
    cursor: pointer;
}

/* =========================================================================
   HERO SECTION
   ========================================================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    /* Offset for header */
    background: linear-gradient(135deg, var(--bg-light) 0%, #e2e8f0 100%);
    overflow: clip;
}

.hero-overlay {
    position: absolute;
    top: 0;
    right: 0;
    width: 45%;
    height: 100%;
    background-color: var(--primary);
    clip-path: polygon(15% 0, 100% 0, 100% 100%, 0% 100%);
    z-index: 1;
}

.hero-container {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 50px;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    background-color: rgba(10, 61, 98, 0.1);
    color: var(--primary);
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 20px;
    letter-spacing: 0.5px;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 25px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #4b5563;
    margin-bottom: 40px;
    max-width: 90%;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    margin-bottom: 50px;
}

.zalo-icon {
    width: 20px;
    height: 20px;
}

.hero-stats {
    display: flex;
    gap: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.stat-item {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 500;
}

.hero-image-wrapper {
    position: relative;
    border-radius: 20px;
}

.hero-image {
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 2;
    object-fit: cover;
    height: 500px;
    width: 100%;
}

.hero-image-deco {
    position: absolute;
    bottom: -20px;
    right: -20px;
    width: 100%;
    height: 100%;
    border: 4px solid var(--secondary);
    border-radius: 20px;
    z-index: 1;
}

/* =========================================================================
   ABOUT SECTION
   ========================================================================= */
.about-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-images {
    position: relative;
}

.about-images .img-main {
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    width: 100%;
}

.experience-badge {
    position: absolute;
    bottom: -30px;
    right: 20px;
    background: var(--secondary);
    color: white;
    padding: 20px;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    text-align: center;
    border: 4px solid white;
}

.exp-years {
    display: block;
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    line-height: 1;
    margin-bottom: 5px;
}

.exp-text {
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
}

.about-desc {
    margin-bottom: 20px;
    font-size: 1.05rem;
    line-height: 1.8;
    color: #4b5563;
}

.about-features {
    margin-top: 30px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.about-features li {
    display: flex;
    gap: 15px;
}

.about-features i {
    font-size: 1.5rem;
    color: var(--primary);
    background: var(--bg-light);
    height: 50px;
    width: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    flex-shrink: 0;
}

.about-features strong {
    display: block;
    color: var(--primary);
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.about-features span {
    color: var(--text-muted);
}

.about-process-section {
    margin-top: 80px;
}

.process-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.process-grid > div {
    text-align: center;
    padding: 30px 20px;
}

.process-step-num {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 800;
    margin: 0 auto 16px;
}

.process-step-num--accent {
    background: var(--secondary);
}

.process-step-title {
    font-size: 1.1rem;
    margin-bottom: 8px;
    color: var(--primary);
}

.process-step-desc {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

.about-cta {
    text-align: center;
    margin-top: 60px;
    padding: 40px;
    background: var(--bg-light);
    border-radius: 20px;
}

.about-cta-title {
    font-size: 1.4rem;
    margin-bottom: 12px;
    color: var(--primary);
}

.about-cta-desc {
    color: var(--text-muted);
    margin-bottom: 24px;
}

/* =========================================================================
   REQUIREMENTS (PROFILE)
   ========================================================================= */
.req-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.req-card {
    background: white;
    padding: 40px 20px;
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.req-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-light);
}

.req-icon {
    font-size: 3rem;
    color: var(--secondary);
    margin-bottom: 20px;
}

.req-card h3 {
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.req-card p {
    color: var(--text-muted);
}

/* =========================================================================
   COURSES (PRICING)
   ========================================================================= */
.pricing-table {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-bottom: 50px;
}

.price-card {
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow-md);
    overflow: visible;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.price-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.price-card.popular {
    transform: scale(1.05);
    border: 2px solid var(--primary);
    box-shadow: var(--shadow-lg);
}

.price-card.popular:hover {
    transform: scale(1.05) translateY(-5px);
}

.card-header {
    padding: 30px 20px;
    text-align: center;
    background: var(--bg-light);
    border-bottom: 1px solid var(--border-color);
    position: relative;
    border-radius: 20px 20px 0 0;
}

.popular .card-header {
    background: var(--primary);
    color: white;
}

.popular .card-header h3 {
    color: white;
}

.course-badge {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--text-muted);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.course-badge.hot {
    background: var(--secondary);
}

.price {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    margin: 20px 0 10px;
    color: var(--primary);
}

.popular .price {
    color: white;
}

.currency {
    font-size: 1rem;
    font-weight: 600;
    margin-top: 5px;
    margin-right: 5px;
}

.amount {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    line-height: 1;
}

.time-est {
    font-size: 0.95rem;
    font-weight: 600;
    opacity: 0.8;
}

.card-body {
    padding: 30px;
    padding-bottom: 35px;
    flex-grow: 1;
}

.target-desc {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px dashed var(--border-color);
    font-weight: 500;
}

.list-title {
    font-size: 1rem;
    margin-bottom: 15px;
    color: var(--text-main);
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.feature-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 0.95rem;
    color: #4b5563;
}

.feature-list i {
    color: #10b981;
    /* Success Green */
    margin-top: 4px;
}

.card-footer {
    padding: 30px;
    padding-top: 0;
}

/* Bang gia Poster Images */
.bang-gia-posters {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
    justify-items: center;
}
.poster-item {
    width: 100%;
    max-width: 500px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    background: white;
}
.poster-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}
.poster-item img {
    width: 100%;
    height: auto;
    display: block;
}

/* Premium VIP Box */
.premium-service {
    display: flex;
    align-items: flex-start;
    gap: 30px;
    padding: 40px;
    background: linear-gradient(to right, rgba(243, 156, 18, 0.1), rgba(255, 255, 255, 1));
    border-left: 5px solid var(--secondary);
}

.premium-icon {
    background: var(--secondary);
    color: white;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.premium-content h3 {
    margin-bottom: 5px;
}

.premium-content>p {
    margin-bottom: 20px;
    color: var(--text-muted);
}

.vip-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.vip-list li {
    font-size: 0.95rem;
}

.vip-list i {
    color: var(--secondary);
    margin-right: 5px;
}

/* =========================================================================
   GALLERY SECTION
   ========================================================================= */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 15px;
}

.gallery-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(10, 61, 98, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.gallery-overlay i {
    color: white;
    font-size: 2rem;
    transform: scale(0.5);
    transition: var(--transition);
}

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

.gallery-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-item:hover .gallery-overlay i {
    transform: scale(1);
}

/* =========================================================================
   SWIPEABLE SLIDER
   ========================================================================= */
.slider-wrapper {
    position: relative;
    overflow: hidden;
}

.slider-track {
    display: flex;
    gap: 15px;
    overflow-x: auto;
    scroll-behavior: smooth;
    padding: 10px 0 20px;
    cursor: grab;
    -webkit-overflow-scrolling: touch;
    user-select: none;
    -webkit-user-select: none;
}

.slider-track img {
    pointer-events: none;
    -webkit-user-drag: none;
}

.slider-track:active {
    cursor: grabbing;
}

/* Hide scrollbar */
.slider-track::-webkit-scrollbar {
    display: none;
}

.slider-track {
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.slider-item {
    flex: 0 0 350px;
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s ease;
}

.slider-item:hover {
    transform: scale(1.02);
}

.slider-item img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
}

/* Caption */
.slider-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 12px 16px;
    background: linear-gradient(to top, rgba(10, 61, 98, 0.85) 0%, transparent 100%);
    color: white;
    font-weight: 600;
    font-size: 0.9rem;
    text-align: center;
}

/* Navigation Buttons */
.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: white;
    border: 2px solid var(--primary);
    color: var(--primary);
    font-size: 1.1rem;
    cursor: pointer;
    z-index: 10;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
}

.slider-btn:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-50%) scale(1.1);
}

.slider-prev {
    left: 10px;
}

.slider-next {
    right: 10px;
}

/* Slider on dark backgrounds */
.bg-dark .slider-btn {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.4);
    color: white;
}

.bg-dark .slider-btn:hover {
    background: var(--secondary);
    border-color: var(--secondary);
    color: var(--primary);
}

/* =========================================================================
   FOOTER & CTA
   ========================================================================= */
.footer {
    background: var(--bg-dark);
}

.footer-cta {
    position: relative;
    background: var(--primary);
    overflow: hidden;
}

.cta-title {
    color: white;
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.cta-desc {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.cta-bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.1) 0%, transparent 40%);
    pointer-events: none;
}

.footer-bottom {
    padding: 60px 0 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 50px;
}

.footer-logo {
    color: white;
    margin-bottom: 20px;
}

.footer-logo i {
    color: var(--secondary);
}

.footer-text {
    color: var(--text-muted);
    max-width: 400px;
}

.footer-heading {
    color: white;
    font-size: 1.2rem;
    margin-bottom: 25px;
    position: relative;
    padding-bottom: 10px;
}

.footer-heading::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--secondary);
}

.contact-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-list li {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    color: #a0aec0;
}

.contact-list i {
    color: var(--secondary);
    margin-top: 5px;
}

.contact-list a {
    color: #a0aec0;
}

.contact-list a:hover {
    color: white;
}

.copyright {
    padding: 20px 0;
    color: #718096;
    font-size: 0.9rem;
}

/* =========================================================================
   FLOATING BUTTONS
   ========================================================================= */
.floating-contact {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 999;
}

.float-btn {
    width: 55px;
    height: 55px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    position: relative;
    transition: var(--transition);
}

.float-btn:hover {
    transform: scale(1.1);
}

.zalo-btn {
    background-color: white;
}

.zalo-btn img {
    width: 35px;
    height: 35px;
}

.phone-btn {
    background-color: #27ae60;
}

.pulsating-circle {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: #27ae60;
    border-radius: 50%;
    z-index: -1;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }

    100% {
        transform: scale(1.6);
        opacity: 0;
    }
}

/* =========================================================================
   MODAL (IMAGE GALLERY)
   ========================================================================= */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(5px);
    align-items: center;
    justify-content: center;
}

.modal-content {
    display: block;
    max-width: 90%;
    max-height: 90vh;
    object-fit: contain;
    animation: zoom 0.3s ease;
}

@keyframes zoom {
    from {
        transform: scale(0.8);
        opacity: 0
    }

    to {
        transform: scale(1);
        opacity: 1
    }
}

.close-modal {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #f1f1f1;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
}

.close-modal:hover {
    color: var(--secondary);
}

/* =========================================================================
   CONTACT PAGE
   ========================================================================= */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: start;
}

.contact-card {
    padding: 40px;
    border-radius: 16px;
}

.contact-info-card {
    padding: 30px;
    border-radius: 16px;
    margin-bottom: 24px;
}

.contact-info-card:last-child {
    margin-bottom: 0;
}

/* =========================================================================
   RESPONSIVE DESIGN
   ========================================================================= */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .hero-container {
        grid-template-columns: 1.1fr 0.9fr;
        gap: 30px;
    }

    .hero-overlay {
        width: 48%;
        clip-path: polygon(15% 0, 100% 0, 100% 100%, 0% 100%);
    }

    .hero {
        padding-top: 100px;
        min-height: auto;
    }

    .hero-subtitle {
        max-width: 100%;
        font-size: 1.05rem;
    }

    .hero-buttons {
        flex-wrap: wrap;
    }

    .hero-image-wrapper {
        display: block;
        position: relative;
    }

    .hero-image {
        height: 100%;
        min-height: 400px;
        border-radius: 16px;
        object-fit: cover;
    }

    .hero-image-deco {
        bottom: -15px;
        right: -15px;
        border-width: 3px;
        border-radius: 16px;
    }

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

    .popular {
        transform: none;
    }

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

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

@media (max-width: 768px) {

    /* Header Mobile Menu */
    .mobile-menu-btn {
        display: block;
    }

    .header-actions .btn-call {
        display: none;
    }

    .nav {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: white;
        flex-direction: column;
        transition: 0.3s;
        box-shadow: var(--shadow-md);
        padding: 40px 5%;
    }

    .nav.active {
        left: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: 20px;
        font-size: 1.2rem;
    }

    .section {
        padding: 50px 0;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .section-subtitle {
        font-size: 1rem;
    }

    /* Hero mobile fix */
    .hero {
        padding-top: 90px;
        padding-bottom: 40px;
    }

    .hero-overlay {
        width: 52%;
        clip-path: polygon(10% 0, 100% 0, 100% 100%, 0% 100%);
    }

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

    .hero-title {
        font-size: 1.6rem;
        word-break: break-word;
    }

    .hero-subtitle {
        font-size: 0.9rem;
        max-width: 100%;
        margin-bottom: 20px;
    }

    .badge {
        font-size: 0.75rem;
        padding: 4px 10px;
        white-space: normal;
        line-height: 1.4;
    }

    .hero-buttons {
        flex-direction: column;
        gap: 10px;
        margin-bottom: 20px;
    }

    .btn {
        white-space: normal;
        text-align: center;
    }

    .btn-lg {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .hero-stats {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 15px;
    }

    .stat-number {
        font-size: 1.3rem;
    }

    .stat-label {
        font-size: 0.8rem;
    }

    .hero-image {
        height: 100%;
        min-height: 300px;
        object-fit: cover;
        border-radius: 16px;
    }

    .hero-image-deco {
        bottom: -10px;
        right: -10px;
        border-width: 2px;
        border-radius: 16px;
    }

    /* About */
    .about-container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-images {
        margin-bottom: 20px;
    }

    .about-process-section {
        margin-top: 50px;
    }

    .process-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }

    .process-grid > div {
        padding: 20px 12px;
    }

    .process-step-num {
        width: 48px;
        height: 48px;
        font-size: 1.2rem;
    }

    .experience-badge {
        bottom: -20px;
        right: 10px;
        padding: 14px;
    }

    .exp-years {
        font-size: 1.5rem;
    }

    .exp-text {
        font-size: 0.75rem;
    }

    .about-cta {
        margin-top: 40px;
        padding: 28px 20px;
    }

    /* Req Cards */
    .req-cards {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Pricing */
    .pricing-table {
        grid-template-columns: 1fr;
    }

    .bang-gia-posters {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    /* Contact */
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .contact-card {
        padding: 24px;
    }

    .contact-info-card {
        padding: 20px;
    }

    .amount {
        font-size: 2rem;
    }

    .premium-service {
        flex-direction: column;
        padding: 25px;
        align-items: center;
        text-align: center;
        border-left: none;
        border-top: 5px solid var(--secondary);
    }

    .vip-list {
        grid-template-columns: 1fr;
        text-align: left;
    }

    /* Slider */
    .slider-item {
        flex: 0 0 280px;
    }

    .slider-item img {
        height: 250px;
    }

    /* CTA */
    .cta-title {
        font-size: 1.8rem;
    }

    .cta-desc {
        font-size: 1rem;
    }

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

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

@media (max-width: 480px) {
    .req-cards {
        grid-template-columns: 1fr;
    }

    .hero-title {
        font-size: 1.7rem;
    }

    .hero-content {
        padding: 20px 15px;
    }

    .hero-stats {
        flex-direction: column;
        gap: 15px;
        align-items: center;
    }

    .slider-item {
        flex: 0 0 260px;
    }

    .slider-item img {
        height: 220px;
    }

    .slider-caption {
        font-size: 0.8rem;
        padding: 8px 12px;
    }

    .floating-contact {
        bottom: 20px;
        right: 15px;
    }

    .float-btn {
        width: 48px;
        height: 48px;
    }

    .zalo-btn img {
        width: 28px;
        height: 28px;
    }
}