/* ==========================================================================
   CẢNH QUAN ĐẠI NGÀN - LUXURY RESPONSIVE STYLESHEET
   Mobile-first, Tablet & Large Screens Breakpoints
   ========================================================================== */

/* --- 1. LARGE SCREENS & DESKTOP (<= 1200px) --- */
@media (max-width: 1200px) {
  .hero-title {
    font-size: 2.75rem;
  }
  
  .services-grid,
  .testimonials-grid,
  .blog-grid,
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
  }
  
  .process-grid,
  .core-values-grid {
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
  }

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

/* --- 2. TABLET LANDSCAPE & MEDIUM SCREENS (<= 992px) --- */
@media (max-width: 992px) {
  :root {
    --header-height: 70px;
  }

  .nav-menu,
  .header-actions .btn {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  .topbar-right {
    display: none;
  }

  .hero {
    min-height: 560px;
  }

  .hero-slider {
    height: 560px;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 15px;
  }

  .stat-card {
    border-right: none;
    border-bottom: 1px solid var(--border-light);
    padding-bottom: 12px;
  }

  .stat-card:nth-last-child(-n+2) {
    border-bottom: none;
    padding-bottom: 0;
  }

  .about-grid,
  .contact-page-grid,
  .vision-mission-grid,
  .service-detail-layout,
  .article-detail-layout {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .about-img {
    height: 320px;
  }

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

  .process-grid::before {
    display: none;
  }

  .process-card:last-child,
  .core-values-grid .process-card:last-child {
    grid-column: span 2;
    max-width: 420px;
    margin: 0 auto;
    width: 100%;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }

  .services-grid,
  .testimonials-grid,
  .blog-grid,
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .estimator-grid {
    grid-template-columns: 1fr;
    gap: 25px;
  }

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

  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
  }
}

/* --- 3. TABLET PORTRAIT & MOBILE (<= 768px) --- */
@media (max-width: 768px) {
  /* Prevent horizontal overflow globally */
  html, body {
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
    position: relative;
  }

  .container {
    padding-left: 16px;
    padding-right: 16px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  .section {
    padding: 38px 0;
    overflow-x: clip;
    width: 100%;
    max-width: 100vw;
    box-sizing: border-box;
  }

  .section-header {
    margin-bottom: 20px;
    text-align: center;
  }

  .section-title {
    font-size: 1.55rem;
    line-height: 1.25;
    margin-bottom: 8px;
  }

  .section-subtitle {
    font-size: 0.86rem;
    line-height: 1.45;
  }

  .section-tag {
    font-size: 0.74rem;
    padding: 4px 12px;
    margin-bottom: 8px;
  }

  .topbar {
    display: none;
  }

  /* --- HERO SECTION --- */
  .hero {
    min-height: auto;
  }

  .hero-slider {
    height: 480px;
  }

  .hero-content {
    padding: 24px 20px 52px 20px;
    justify-content: center;
    max-width: 100%;
    box-sizing: border-box;
  }

  .hero-badge {
    font-size: 0.74rem;
    padding: 5px 12px;
    margin-bottom: 10px;
    max-width: 100%;
    white-space: normal;
    line-height: 1.35;
    display: inline-block;
  }

  .hero-title {
    font-size: 1.5rem;
    line-height: 1.25;
    margin-bottom: 8px;
    word-break: break-word;
  }

  .hero-desc {
    font-size: 0.85rem;
    line-height: 1.45;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .hero-actions {
    display: flex;
    flex-direction: column;
    width: 100%;
    gap: 8px;
  }

  .hero-actions .btn {
    width: 100%;
    padding: 10px 16px;
    font-size: 0.9rem;
    justify-content: center;
    text-align: center;
  }

  .hero-controls {
    display: none;
  }

  .hero-dots {
    bottom: 14px;
  }

  /* --- STATS STRIP COMPACT 2X2 GRID --- */
  .stats-strip {
    margin-top: -15px;
    margin-bottom: 20px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
  }

  .stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .stat-card {
    padding: 6px 8px;
    gap: 8px;
    background: var(--bg-alt);
    border-radius: var(--radius-sm);
    border: none;
    border-bottom: none;
  }

  .stat-icon {
    width: 34px;
    height: 34px;
    border-radius: var(--radius-sm);
  }

  .stat-icon svg {
    width: 18px;
    height: 18px;
  }

  .stat-number {
    font-size: 1.05rem;
    line-height: 1.15;
  }

  .stat-label {
    font-size: 0.68rem;
    line-height: 1.2;
  }

  /* --- COMPARISON SLIDER --- */
  .comparison-slider-container {
    height: 250px;
    border-radius: var(--radius-md);
  }

  .comparison-badge {
    font-size: 0.68rem;
    padding: 3px 8px;
    top: 8px;
  }

  .comparison-info {
    flex-direction: column;
    gap: 10px;
    text-align: center;
    font-size: 0.82rem;
  }

  /* --- PROCESS SECTION (COMPACT 2-COL GRID IN 1 SECTION) --- */
  .process-grid {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 8px !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .process-card {
    flex: none !important;
    width: 100% !important;
    max-width: 100% !important;
    padding: 10px 8px !important;
    border-radius: var(--radius-sm) !important;
    background: var(--white) !important;
    border: 1px solid var(--border-light) !important;
    box-shadow: var(--shadow-sm) !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    min-width: 0 !important;
  }

  .process-card:last-child {
    grid-column: span 2 !important;
    max-width: 100% !important;
    margin: 0 !important;
  }

  .process-step-num {
    width: 26px !important;
    height: 26px !important;
    font-size: 0.76rem !important;
    margin-bottom: 4px !important;
    border-radius: 50% !important;
    background: var(--primary-tint) !important;
    color: var(--primary-dark) !important;
    font-weight: 800 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
  }

  .process-card-title {
    font-size: 0.82rem !important;
    font-weight: 700 !important;
    line-height: 1.25 !important;
    margin-bottom: 2px !important;
    color: var(--primary-dark) !important;
  }

  .process-card-desc {
    font-size: 0.7rem !important;
    line-height: 1.3 !important;
    color: var(--text-muted) !important;
    display: -webkit-box !important;
    -webkit-line-clamp: 2 !important;
    -webkit-box-orient: vertical !important;
    overflow: hidden !important;
  }

  /* --- ABOUT SECTION COMPACT 1-SCREEN LAYOUT --- */
  .about-grid {
    gap: 16px;
  }

  .about-img-wrap {
    height: 160px;
    border-radius: var(--radius-md);
    margin-bottom: 10px;
  }

  .about-img {
    height: 100%;
    object-fit: cover;
  }

  .about-badge-float {
    padding: 5px 10px;
    gap: 6px;
    bottom: 6px;
    left: 6px;
    right: 6px;
    border-radius: var(--radius-sm);
  }

  .about-badge-icon {
    font-size: 1rem;
  }

  .about-badge-text strong {
    font-size: 0.76rem;
  }

  .about-badge-text span {
    font-size: 0.68rem;
  }

  .about-content-title {
    font-size: 1.3rem;
    margin-bottom: 6px;
    line-height: 1.25;
  }

  .about-lead {
    font-size: 0.82rem;
    line-height: 1.4;
    margin-bottom: 10px;
  }

  .about-lead + p {
    display: none;
  }

  .usp-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
    margin-bottom: 12px;
  }

  .usp-item {
    padding: 6px 8px;
    gap: 6px;
    background: var(--white);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-light);
  }

  .usp-icon {
    width: 20px;
    height: 20px;
    font-size: 0.7rem;
    border-radius: 50%;
  }

  .usp-text strong {
    font-size: 0.74rem;
    line-height: 1.2;
    display: block;
  }

  .usp-text p {
    font-size: 0.66rem;
    line-height: 1.2;
    margin-top: 1px;
  }

  .about-section .btn {
    width: 100%;
    justify-content: center;
    font-size: 0.88rem;
    padding: 10px;
  }

  /* --- SERVICES HORIZONTAL SWIPE SLIDER --- */
  .services-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 14px;
    margin: 0 -16px;
    padding: 6px 16px 16px 16px;
    scrollbar-width: none;
  }

  .services-grid::-webkit-scrollbar {
    display: none;
  }

  .service-card {
    flex: 0 0 270px;
    max-width: 270px;
    scroll-snap-align: center;
    display: flex;
    flex-direction: column;
    border-radius: var(--radius-md);
  }

  .service-img-wrap {
    height: 150px;
  }

  .service-body {
    padding: 14px 12px;
    display: flex;
    flex-direction: column;
    flex: 1;
  }

  .service-title {
    font-size: 1rem;
    margin-bottom: 5px;
  }

  .service-desc {
    font-size: 0.8rem;
    line-height: 1.4;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  .service-features {
    gap: 4px;
    margin-bottom: 10px;
  }

  .service-feature-item {
    font-size: 0.74rem;
  }

  .service-footer {
    margin-top: auto;
    padding-top: 8px;
  }

  .services-view-all-wrap {
    margin-top: 14px !important;
    text-align: center;
  }

  .services-view-all-wrap .btn {
    padding: 8px 18px !important;
    font-size: 0.82rem !important;
    border-radius: var(--radius-full) !important;
    width: auto !important;
    max-width: 90% !important;
    display: inline-flex !important;
    justify-content: center !important;
    margin: 0 auto !important;
  }

  /* --- ESTIMATOR SECTION (COMFORTABLE 1-SECTION LIVE WIDGET ON MOBILE) --- */
  .estimator-section {
    padding: 30px 0 !important;
  }

  .estimator-section .section-header {
    margin-bottom: 14px !important;
    text-align: center;
  }

  .estimator-section .section-tag-dark {
    font-size: 0.72rem !important;
    padding: 3px 10px !important;
    margin-bottom: 6px !important;
    background: rgba(74, 222, 128, 0.15) !important;
    color: #4ADE80 !important;
    border: 1px solid rgba(74, 222, 128, 0.35) !important;
  }

  .estimator-section .section-title {
    font-size: 1.38rem !important;
    line-height: 1.25 !important;
    margin-bottom: 4px !important;
    color: #FFFFFF !important;
  }

  .estimator-section .section-title span {
    color: #4ADE80 !important;
    text-shadow: 0 0 20px rgba(74, 222, 128, 0.45) !important;
  }

  .estimator-section .section-title span::after {
    background: rgba(74, 222, 128, 0.5) !important;
    bottom: 1px !important;
  }

  .estimator-section .section-subtitle {
    font-size: 0.8rem !important;
    line-height: 1.4 !important;
    color: #E2E8F0 !important;
    opacity: 0.95 !important;
    display: -webkit-box !important;
    -webkit-line-clamp: 2 !important;
    -webkit-box-orient: vertical !important;
    overflow: hidden !important;
    margin-bottom: 0 !important;
  }

  .estimator-box {
    padding: 16px 14px !important;
    border-radius: var(--radius-lg) !important;
    background: rgba(255, 255, 255, 0.06) !important;
    border: 1px solid rgba(255, 255, 255, 0.15) !important;
  }

  .estimator-grid {
    display: flex !important;
    flex-direction: column !important;
    gap: 12px !important;
  }

  .estimator-form-title {
    display: none !important;
  }

  .form-group {
    margin-bottom: 10px !important;
  }

  .form-label {
    font-size: 0.8rem !important;
    font-weight: 600 !important;
    color: #F1F5F9 !important;
    margin-bottom: 6px !important;
  }

  /* 2x2 Property Type Cards with comfortable finger tap sizes */
  .prop-types-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 8px !important;
  }

  .prop-type-card {
    padding: 9px 10px !important;
    border-radius: var(--radius-md) !important;
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 8px !important;
    background: rgba(255, 255, 255, 0.08) !important;
    border: 1.5px solid rgba(255, 255, 255, 0.15) !important;
  }

  .prop-type-card.active {
    background: var(--primary) !important;
    border-color: #4ADE80 !important;
    box-shadow: 0 0 16px rgba(74, 222, 128, 0.4) !important;
  }

  .prop-type-icon {
    font-size: 1.25rem !important;
    margin-bottom: 0 !important;
    line-height: 1 !important;
  }

  .prop-type-title {
    font-size: 0.82rem !important;
    font-weight: 700 !important;
    color: #FFFFFF !important;
    white-space: nowrap !important;
    line-height: 1.1 !important;
  }

  /* Area Slider Display */
  .range-val-display {
    font-size: 0.8rem !important;
    margin-bottom: 4px !important;
    color: #E2E8F0 !important;
  }

  .range-val-badge {
    font-size: 0.92rem !important;
    font-weight: 800 !important;
    color: #4ADE80 !important;
    background: rgba(74, 222, 128, 0.15) !important;
    padding: 2px 8px !important;
    border-radius: var(--radius-full) !important;
    border: 1px solid rgba(74, 222, 128, 0.3) !important;
  }

  .range-slider-wrap {
    margin-top: 4px !important;
  }

  input[type=range] {
    height: 6px !important;
  }

  input[type=range]::-webkit-slider-thumb {
    width: 22px !important;
    height: 22px !important;
    background: #4ADE80 !important;
    border: 2px solid #FFFFFF !important;
    box-shadow: 0 0 8px rgba(0, 0, 0, 0.4) !important;
  }

  /* Dropdown Selects */
  .estimator-selects-row {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 8px !important;
    margin-bottom: 2px !important;
  }

  .form-select {
    padding: 8px 10px !important;
    font-size: 0.78rem !important;
    height: 38px !important;
    border-radius: var(--radius-sm) !important;
    color: #FFFFFF !important;
    background: rgba(255, 255, 255, 0.1) !important;
    border: 1px solid rgba(255, 255, 255, 0.2) !important;
  }

  /* Live Price Result Card & CTA Button Bar: Modern 2-Tier Stack on Mobile */
  .estimator-result-card {
    padding: 14px 16px !important;
    border-radius: var(--radius-lg) !important;
    background: var(--white) !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    gap: 8px !important;
    margin-top: 4px !important;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.25) !important;
    border: 1px solid rgba(255, 255, 255, 0.8) !important;
  }

  .result-badge,
  .result-perks {
    display: none !important;
  }

  .result-price-box {
    margin: 0 !important;
    padding: 0 !important;
    background: transparent !important;
    border: none !important;
    text-align: center !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    width: 100% !important;
  }

  .result-label {
    font-size: 0.74rem !important;
    color: var(--text-muted) !important;
    font-weight: 600 !important;
    margin-bottom: 2px !important;
    text-transform: uppercase !important;
    letter-spacing: 0.5px !important;
  }

  .result-price {
    font-size: 1.65rem !important;
    font-weight: 800 !important;
    color: var(--primary-dark) !important;
    line-height: 1.15 !important;
    margin-bottom: 2px !important;
    white-space: nowrap !important;
  }

  .result-unit {
    font-size: 0.72rem !important;
    color: var(--text-muted) !important;
    line-height: 1.2 !important;
  }

  #calc-submit-btn {
    width: 100% !important;
    padding: 11px 18px !important;
    font-size: 0.88rem !important;
    font-weight: 700 !important;
    border-radius: var(--radius-full) !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    margin: 4px 0 0 0 !important;
    box-shadow: 0 4px 14px rgba(46, 204, 113, 0.4) !important;
  }

  /* --- GALLERY COMPACT 2-COL GRID --- */
  .gallery-tabs {
    justify-content: flex-start;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 10px;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    margin: 0 -16px 15px -16px;
    padding-left: 16px;
    padding-right: 16px;
  }

  .gallery-tabs::-webkit-scrollbar {
    display: none;
  }

  .gallery-tab {
    white-space: nowrap;
    padding: 6px 12px;
    font-size: 0.78rem;
  }

  .gallery-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .gallery-item {
    height: 145px;
    border-radius: var(--radius-sm);
  }

  .gallery-overlay {
    padding: 8px;
  }

  .gallery-category {
    font-size: 0.62rem;
    padding: 2px 6px;
  }

  .gallery-title {
    font-size: 0.8rem;
    line-height: 1.2;
    margin-bottom: 2px;
  }

  .gallery-meta {
    font-size: 0.66rem;
    gap: 4px;
  }

  /* --- TESTIMONIALS HORIZONTAL SWIPE CAROUSEL --- */
  .testimonials-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 12px;
    margin: 0 -16px;
    padding: 6px 16px 16px 16px;
    scrollbar-width: none;
  }

  .testimonials-grid::-webkit-scrollbar {
    display: none;
  }

  .testimonial-card {
    flex: 0 0 270px;
    max-width: 270px;
    scroll-snap-align: center;
    padding: 16px 14px;
    border-radius: var(--radius-md);
  }

  .testimonial-text {
    font-size: 0.82rem;
    line-height: 1.45;
  }

  /* --- BLOG HORIZONTAL SWIPE CAROUSEL --- */
  .blog-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 12px;
    margin: 0 -16px;
    padding: 6px 16px 16px 16px;
    scrollbar-width: none;
  }

  .blog-grid::-webkit-scrollbar {
    display: none;
  }

  .blog-card {
    flex: 0 0 260px;
    max-width: 260px;
    scroll-snap-align: center;
    border-radius: var(--radius-md);
  }

  .blog-img-wrap {
    height: 140px;
  }

  .blog-body {
    padding: 12px 10px;
  }

  .blog-title {
    font-size: 0.92rem;
    line-height: 1.3;
    margin-bottom: 4px;
  }

  .blog-excerpt {
    font-size: 0.78rem;
    line-height: 1.35;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
  }

  /* --- PRICING HORIZONTAL SWIPE CAROUSEL --- */
  .pricing-grid {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 12px;
    margin: 0 -16px;
    padding: 6px 16px 16px 16px;
    scrollbar-width: none;
    max-width: 100%;
  }

  .pricing-grid::-webkit-scrollbar {
    display: none;
  }

  .pricing-card {
    flex: 0 0 270px;
    max-width: 270px;
    scroll-snap-align: center;
    padding: 20px 16px;
  }

  /* --- FOOTER COMPACT --- */
  .footer {
    padding: 35px 0 20px 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 22px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
    font-size: 0.78rem;
  }

  /* --- FLOATING CTA BUTTONS --- */
  .floating-cta-bar {
    bottom: 16px;
    right: 12px;
    gap: 8px;
    z-index: 1200;
  }

  .floating-btn-survey,
  .floating-btn-phone,
  .floating-btn-zalo {
    width: 42px !important;
    height: 42px !important;
    padding: 0 !important;
    justify-content: center !important;
    border-radius: 50% !important;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.28) !important;
  }

  .floating-btn .floating-btn-text {
    display: none !important;
  }

  .floating-btn svg {
    width: 22px !important;
    height: 22px !important;
    flex-shrink: 0 !important;
    display: block !important;
  }

  .floating-btn img,
  .floating-btn-zalo img {
    width: 32px !important;
    height: 32px !important;
    flex-shrink: 0 !important;
    display: block !important;
  }

  .floating-btn-top {
    width: 34px;
    height: 34px;
  }

  /* Swipe indicator pill */
  .mobile-swipe-hint {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.74rem;
    color: var(--primary);
    background: var(--primary-tint);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    margin-bottom: 12px;
    font-weight: 500;
  }

  /* Lightbox on mobile */
  .lightbox-content {
    margin: 10px;
    max-height: 94vh;
  }

  .lightbox-slider-wrap {
    height: 240px;
  }

  .lightbox-counter {
    top: 8px !important;
    left: 8px !important;
    font-size: 0.68rem !important;
    padding: 2px 8px !important;
  }

  .lightbox-close {
    top: 8px !important;
    right: 8px !important;
    width: 26px !important;
    height: 26px !important;
    font-size: 1rem !important;
  }

  .lightbox-nav-btn {
    width: 26px !important;
    height: 26px !important;
    font-size: 0.8rem !important;
  }

  .lightbox-nav-btn.prev {
    left: 6px !important;
  }

  .lightbox-nav-btn.next {
    right: 6px !important;
  }

  .lightbox-thumbnails {
    bottom: 6px !important;
    padding: 3px 6px !important;
    gap: 4px !important;
  }

  .lightbox-thumb {
    width: 26px !important;
    height: 18px !important;
    border-radius: 3px !important;
  }

  .lightbox-body {
    padding: 12px 14px;
    flex-direction: column;
    align-items: stretch;
    gap: 10px;
  }

  .lightbox-title {
    font-size: 1.1rem;
  }

  .lightbox-desc {
    font-size: 0.8rem;
    line-height: 1.35;
  }

  .lightbox-cta .btn {
    width: 100%;
  }

  /* --- SUBPAGE HERO BANNERS --- */
  section[style*="linear-gradient"] {
    padding: 42px 16px 32px 16px !important;
  }

  section[style*="linear-gradient"] h1 {
    font-size: 1.55rem !important;
    line-height: 1.25 !important;
    margin-bottom: 10px !important;
  }

  section[style*="linear-gradient"] p {
    font-size: 0.85rem !important;
    line-height: 1.45 !important;
  }

  /* --- GIOI THIEU (ABOUT PAGE) OPTIMIZATIONS --- */
  .vision-mission-grid {
    display: flex !important;
    overflow-x: auto !important;
    scroll-snap-type: x mandatory !important;
    -webkit-overflow-scrolling: touch !important;
    gap: 12px !important;
    margin: 0 -16px 20px -16px !important;
    padding: 6px 16px 16px 16px !important;
    scrollbar-width: none !important;
  }

  .vision-mission-grid::-webkit-scrollbar {
    display: none !important;
  }

  .vision-mission-grid > div {
    flex: 0 0 275px !important;
    max-width: 275px !important;
    scroll-snap-align: center !important;
    padding: 20px 16px !important;
    border-radius: var(--radius-lg) !important;
  }

  .core-values-grid {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 8px !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .core-values-grid .process-card {
    flex: none !important;
    width: 100% !important;
    max-width: 100% !important;
    padding: 10px 8px !important;
    border-radius: var(--radius-sm) !important;
    background: var(--white) !important;
    border: 1px solid var(--border-light) !important;
    box-shadow: var(--shadow-sm) !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    min-width: 0 !important;
  }

  .core-values-grid .process-card:last-child {
    grid-column: span 2 !important;
    max-width: 100% !important;
    margin: 0 !important;
  }

  /* --- DICH VU (SERVICES PAGE) OPTIMIZATIONS --- */
  .page-services-list .about-grid,
  body > section.section .about-grid {
    gap: 14px;
    margin-bottom: 22px !important;
    padding: 16px;
    background: var(--bg-alt);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
  }

  /* --- LIEN HE (CONTACT PAGE) OPTIMIZATIONS --- */
  .contact-page-grid {
    grid-template-columns: 1fr !important;
    gap: 20px !important;
  }

  .contact-page-grid > div:first-child > div[style*="background:var(--bg-alt)"] {
    padding: 16px 14px !important;
    border-radius: var(--radius-md) !important;
    margin-bottom: 12px !important;
  }

  .contact-page-grid > div:last-child {
    padding: 22px 16px !important;
    border-radius: var(--radius-lg) !important;
  }

  .contact-page-grid form input,
  .contact-page-grid form select,
  .contact-page-grid form textarea {
    font-size: 16px !important;
    padding: 10px 12px !important;
  }

  /* --- CHI TIET DICH VU (SERVICE DETAIL PAGE) OPTIMIZATIONS --- */
  .service-detail-hero {
    padding: 38px 16px 28px 16px !important;
  }

  .service-detail-hero .breadcrumb-nav {
    margin-bottom: 12px;
    font-size: 0.78rem;
  }

  .service-detail-hero #svc-title {
    font-size: 1.55rem !important;
    line-height: 1.25 !important;
    margin-bottom: 10px !important;
  }

  .service-detail-hero #svc-desc {
    font-size: 0.85rem !important;
    line-height: 1.45 !important;
    margin-bottom: 18px !important;
  }

  .service-detail-hero div[style*="display:flex"] {
    flex-direction: column !important;
    width: 100%;
    gap: 8px !important;
  }

  .service-detail-hero .btn {
    width: 100% !important;
    justify-content: center !important;
    text-align: center !important;
  }

  /* Service switch tab bar */
  .service-tabs-bar {
    width: 100% !important;
    max-width: 100vw !important;
    overflow-x: clip !important;
    padding: 10px 0 !important;
  }

  .service-tabs-list {
    display: flex !important;
    overflow-x: auto !important;
    scroll-snap-type: x mandatory !important;
    justify-content: flex-start !important;
    gap: 8px !important;
    margin: 0 -16px !important;
    padding: 4px 16px 10px 16px !important;
    scrollbar-width: none !important;
    -webkit-overflow-scrolling: touch !important;
  }

  .service-tabs-list::-webkit-scrollbar {
    display: none !important;
  }

  .service-tab-btn {
    flex-shrink: 0 !important;
    white-space: nowrap !important;
    padding: 7px 13px !important;
    font-size: 0.8rem !important;
    scroll-snap-align: start !important;
  }

  .service-detail-layout {
    display: grid !important;
    grid-template-columns: minmax(0, 1fr) !important;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    gap: 20px !important;
  }

  .service-main-content {
    display: flex !important;
    flex-direction: column !important;
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    gap: 20px !important;
  }

  .service-feature-box {
    width: 100% !important;
    max-width: 100% !important;
    min-width: 0 !important;
    box-sizing: border-box !important;
    padding: 18px 14px !important;
    border-radius: var(--radius-lg) !important;
    overflow-x: clip !important;
  }

  .service-feature-box h2 {
    font-size: 1.3rem !important;
    line-height: 1.25 !important;
    margin-bottom: 8px !important;
  }

  .service-feature-box p {
    font-size: 0.82rem !important;
    line-height: 1.45 !important;
    margin-bottom: 12px !important;
  }

  #svc-overview-p2 {
    display: none !important;
  }

  .service-feature-box .about-img-wrap {
    height: 160px !important;
    border-radius: var(--radius-md) !important;
    margin-bottom: 14px !important;
  }

  /* Service Timeline (Compact 2-Col Grid in 1 Section on Mobile) */
  .service-timeline {
    display: grid !important;
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 8px !important;
    margin: 12px 0 0 0 !important;
    padding: 0 !important;
    overflow-x: visible !important;
  }

  .service-timeline::-webkit-scrollbar {
    display: none !important;
  }

  .service-timeline::before {
    display: none !important;
  }

  .timeline-step {
    flex: none !important;
    width: 100% !important;
    max-width: 100% !important;
    padding: 10px 8px !important;
    border-radius: var(--radius-sm) !important;
    background: var(--bg-alt) !important;
    border: 1px solid var(--border-light) !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    min-width: 0 !important;
  }

  .timeline-step-icon {
    width: 26px !important;
    height: 26px !important;
    font-size: 0.76rem !important;
    margin-bottom: 4px !important;
    border-radius: 50% !important;
    background: var(--white) !important;
    border: 2px solid var(--primary) !important;
    color: var(--primary-dark) !important;
    font-weight: 800 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    flex-shrink: 0 !important;
  }

  .timeline-step-content {
    background: transparent !important;
    padding: 0 !important;
    border: none !important;
    width: 100% !important;
  }

  .timeline-step-title {
    font-size: 0.82rem !important;
    font-weight: 700 !important;
    line-height: 1.25 !important;
    margin-bottom: 2px !important;
    color: var(--primary-dark) !important;
  }

  .timeline-step-desc {
    font-size: 0.7rem !important;
    line-height: 1.3 !important;
    color: var(--text-muted) !important;
    display: -webkit-box !important;
    -webkit-line-clamp: 2 !important;
    -webkit-box-orient: vertical !important;
    overflow: hidden !important;
  }

  /* Service Checklist Grid */
  .service-checklist-grid {
    grid-template-columns: 1fr !important;
    gap: 6px !important;
    margin-top: 12px !important;
  }

  .checklist-item {
    padding: 8px 10px !important;
    font-size: 0.78rem !important;
    gap: 8px !important;
    border-radius: var(--radius-sm) !important;
  }

  /* Service Pricing: Compact 3-Row List in 1 Section on Mobile */
  .service-feature-box .pricing-grid {
    display: flex !important;
    flex-direction: column !important;
    gap: 8px !important;
    overflow-x: visible !important;
    margin: 12px 0 0 0 !important;
    padding: 0 !important;
  }

  .service-feature-box .pricing-grid::-webkit-scrollbar {
    display: none !important;
  }

  .svc-pricing-card {
    flex: none !important;
    width: 100% !important;
    max-width: 100% !important;
    padding: 10px 12px !important;
    border-radius: var(--radius-md) !important;
    background: var(--white) !important;
    border: 1px solid var(--border-light) !important;
    box-shadow: var(--shadow-sm) !important;
    display: flex !important;
    flex-direction: row !important;
    align-items: center !important;
    justify-content: space-between !important;
    gap: 10px !important;
    position: relative !important;
  }

  .svc-pricing-card.popular {
    border: 1.5px solid var(--primary) !important;
    background: var(--primary-tint) !important;
  }

  .svc-popular-badge {
    position: absolute !important;
    top: -8px !important;
    right: 12px !important;
    background: var(--primary) !important;
    color: var(--white) !important;
    font-family: var(--font-heading) !important;
    font-size: 0.6rem !important;
    font-weight: 700 !important;
    padding: 1px 8px !important;
    border-radius: var(--radius-full) !important;
  }

  .svc-pricing-info {
    display: flex !important;
    flex-direction: column !important;
    align-items: flex-start !important;
    min-width: 0 !important;
    flex: 1 !important;
  }

  .svc-pricing-name {
    font-size: 0.85rem !important;
    font-weight: 700 !important;
    color: var(--primary-dark) !important;
    margin-bottom: 2px !important;
    line-height: 1.2 !important;
  }

  .svc-pricing-desc {
    display: none !important;
  }

  .svc-pricing-freq {
    font-size: 0.7rem !important;
    color: var(--text-muted) !important;
    font-weight: 500 !important;
    line-height: 1.2 !important;
  }

  .svc-pricing-cost-action {
    display: flex !important;
    flex-direction: column !important;
    align-items: flex-end !important;
    gap: 4px !important;
    flex-shrink: 0 !important;
  }

  .svc-pricing-price {
    font-size: 1rem !important;
    font-weight: 800 !important;
    color: var(--primary-dark) !important;
    line-height: 1 !important;
  }

  .svc-pricing-price span {
    font-size: 0.68rem !important;
    font-weight: 500 !important;
    color: var(--text-muted) !important;
  }

  .svc-pricing-btn {
    padding: 5px 12px !important;
    font-size: 0.75rem !important;
    border-radius: var(--radius-full) !important;
    white-space: nowrap !important;
    width: auto !important;
    margin: 0 !important;
  }

  /* Service Sticky Sidebar Form: HIDE inline on mobile, use Popup Modal instead */
  .sticky-sidebar-card,
  #booking-form-box {
    display: none !important;
  }

  /* Booking Modal Mobile Bottom Sheet */
  .booking-modal-wrapper {
    align-items: flex-end !important;
    padding: 0 !important;
  }

  .booking-modal-card {
    max-width: 100% !important;
    border-radius: 20px 20px 0 0 !important;
    padding: 20px 16px 28px 16px !important;
    max-height: 85vh !important;
    transform: translateY(100%) !important;
  }

  .booking-modal-wrapper.active .booking-modal-card {
    transform: translateY(0) !important;
  }

  /* News Detail on mobile */
  .article-hero-header {
    padding: 30px 0 25px 0;
  }

  .article-main-title {
    font-size: 1.5rem;
  }

  .article-meta-row {
    font-size: 0.78rem;
    gap: 8px;
  }

  .article-author-card {
    flex-direction: column;
    text-align: center;
    padding: 18px 14px;
  }

  .article-footer-bar {
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .article-share-actions {
    width: 100%;
    justify-content: space-between;
  }

  .article-question-card {
    padding: 20px 14px;
  }

  .article-question-card form > div:first-child {
    grid-template-columns: 1fr !important;
  }
}

/* Hide swipe hint on desktop */
@media (min-width: 769px) {
  .mobile-swipe-hint {
    display: none;
  }
}

/* ==========================================================================
   COMPREHENSIVE 6-TIER BREAKPOINT SYSTEM
   1. Extra Small (xs): 320px – 389px (iPhone SE, Galaxy Fold outer)
   2. Small (sm): 390px – 480px (iPhone 12-16, Pro Max, Galaxy Ultra)
   3. Medium (md): 481px – 767px (Phablet, Landscape Mobile, Tablets)
   4. Large / Tablet (lg): 768px – 1023px (iPad Mini, iPad Air, Tablets)
   5. Extra Large / Laptop (xl): 1024px – 1439px (MacBook Air/Pro, Laptops)
   6. 2X Large / Desktop (2xl): 1440px+ (PC Desktop, 2K/4K Monitors)
   ========================================================================== */

/* --- TIER 1: EXTRA SMALL (xs: 320px - 389px) --- */
@media (max-width: 389px) {
  .container {
    padding-left: 12px !important;
    padding-right: 12px !important;
  }

  .logo-img {
    height: 35px !important;
    max-width: 200px !important;
  }

  .hero-content {
    padding: 16px 12px 38px 12px !important;
  }

  .hero-title {
    font-size: 1.35rem !important;
  }

  .hero-desc {
    font-size: 0.76rem !important;
  }

  .stats-grid {
    gap: 6px !important;
  }

  .stat-card {
    padding: 8px 5px !important;
  }

  .stat-num {
    font-size: 1.1rem !important;
  }

  .stat-label {
    font-size: 0.65rem !important;
  }

  .section {
    padding: 24px 0 !important;
  }

  .section-title {
    font-size: 1.3rem !important;
  }

  .estimator-box {
    padding: 10px 8px !important;
  }

  .prop-types-grid {
    gap: 5px !important;
  }

  .prop-type-card {
    padding: 7px 4px !important;
    gap: 4px !important;
  }

  .prop-type-icon {
    font-size: 1.1rem !important;
  }

  .prop-type-title {
    font-size: 0.72rem !important;
  }

  .estimator-selects-row {
    gap: 5px !important;
  }

  .form-select {
    font-size: 0.72rem !important;
    padding: 6px 6px !important;
    height: 34px !important;
  }

  .estimator-result-card {
    padding: 10px 10px !important;
  }

  .result-price {
    font-size: 1.35rem !important;
  }

  #calc-submit-btn {
    font-size: 0.78rem !important;
    padding: 9px 12px !important;
  }

  .quick-call-btn,
  .quick-zalo-btn {
    width: 40px !important;
    height: 40px !important;
    font-size: 1.1rem !important;
  }
}

/* --- TIER 2: SMALL (sm: 390px - 480px) --- */
@media (min-width: 390px) and (max-width: 480px) {
  .container {
    padding-left: 16px !important;
    padding-right: 16px !important;
  }

  .logo-img {
    height: 40px !important;
  }
}

/* --- TIER 3: MEDIUM (md: 481px - 767px) --- */
@media (min-width: 481px) and (max-width: 767px) {
  .container {
    padding-left: 20px !important;
    padding-right: 20px !important;
  }

  .logo-img {
    height: 44px !important;
  }

  .hero-title {
    font-size: 1.85rem !important;
  }

  .stats-grid {
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 10px !important;
  }

  .stat-card {
    border-bottom: none !important;
    border-right: 1px solid var(--border-light) !important;
    padding: 10px 8px !important;
  }

  .stat-card:last-child {
    border-right: none !important;
  }

  .gallery-grid {
    grid-template-columns: repeat(3, 1fr) !important;
  }
}

/* --- TIER 4: LARGE / TABLET (lg: 768px - 1023px) --- */
@media (min-width: 768px) and (max-width: 1023px) {
  .container {
    max-width: 960px !important;
    padding-left: 24px !important;
    padding-right: 24px !important;
  }

  :root {
    --header-height: 70px;
  }

  .hero-title {
    font-size: 2.2rem !important;
  }

  .stats-grid {
    grid-template-columns: repeat(4, 1fr) !important;
    gap: 15px !important;
  }

  .stat-card {
    border-bottom: none !important;
    border-right: 1px solid var(--border-light) !important;
  }

  .stat-card:last-child {
    border-right: none !important;
  }

  .services-grid,
  .testimonials-grid,
  .blog-grid,
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 20px !important;
  }

  .process-grid,
  .core-values-grid {
    display: grid !important;
    grid-template-columns: repeat(5, 1fr) !important;
    gap: 10px !important;
  }

  .process-card:last-child,
  .core-values-grid .process-card:last-child {
    grid-column: auto !important;
    max-width: 100% !important;
    margin: 0 !important;
  }

  .estimator-grid {
    grid-template-columns: 1.2fr 1fr !important;
    gap: 24px !important;
  }

  .footer-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 30px !important;
  }
}

/* --- TIER 5: EXTRA LARGE / LAPTOP (xl: 1024px - 1439px) --- */
@media (min-width: 1024px) and (max-width: 1439px) {
  .container {
    max-width: 1200px !important;
    padding-left: 30px !important;
    padding-right: 30px !important;
  }

  .services-grid,
  .testimonials-grid,
  .blog-grid,
  .gallery-grid {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 24px !important;
  }

  .process-grid,
  .core-values-grid {
    display: grid !important;
    grid-template-columns: repeat(5, 1fr) !important;
    gap: 14px !important;
  }

  .estimator-grid {
    grid-template-columns: 1.4fr 1fr !important;
    gap: 35px !important;
  }

  .footer-grid {
    grid-template-columns: 1.6fr 1fr 1.2fr 1.2fr !important;
    gap: 30px !important;
  }
}

/* --- TIER 6: 2X LARGE / DESKTOP (2xl: 1440px+) --- */
@media (min-width: 1440px) {
  .container {
    max-width: 1320px !important;
    padding-left: 40px !important;
    padding-right: 40px !important;
    margin-left: auto !important;
    margin-right: auto !important;
  }

  .hero-title {
    font-size: 3.2rem !important;
  }

  .section-title {
    font-size: 2.5rem !important;
  }
}