/* ==========================================================================
   PREMIUM 2026 RESPONSIVE STYLESHEET
   Responsive adaptations for mobile, tablet, laptop, and desktop
   Connected vertical timeline on mobile, re-flowed hero, zero overflow
   ========================================================================== */

/* --- 1. LARGE LAPTOPS & DESKTOPS (Max 1200px) --- */
@media (max-width: 1200px) {
  :root {
    --container-padding: 1.25rem;
  }

  .services-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }

  .footer-grid {
    grid-template-columns: 1.2fr 0.8fr 1fr 1fr;
    gap: 2rem;
  }

  .hero-visual-stage {
    max-width: 480px;
  }

  .node-mid-left { left: -10px; }
  .node-mid-right { right: -10px; }
}

/* --- 2. TABLETS & SMALL LAPTOPS (Max 1024px) --- */
@media (max-width: 1024px) {
  :root {
    --space-2xl: 3.5rem;
    --space-xl: 2.25rem;
  }

  h1 {
    font-size: 2.4rem;
  }

  h2 {
    font-size: 1.85rem;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .hero-content {
    max-width: 100%;
    text-align: center;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-features-strip {
    justify-content: center;
  }

  .hero-workspace-backdrop {
    display: none;
  }

  .hero-facet-backdrop {
    display: none;
  }

  .hero-visual {
    min-height: auto;
  }

  .hero-stage-container {
    min-height: auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.85rem;
  }

  .hero-mobile-image-card {
    display: block;
    width: 100%;
    max-width: 580px;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 16px 36px -8px rgba(10, 25, 47, 0.12);
    border: 1px solid rgba(226, 232, 240, 0.9);
    margin: 0 auto 1.25rem auto;
  }

  .hero-mobile-image-card img {
    width: 100%;
    height: auto;
    display: block;
  }

  .hero-floating-card {
    position: static !important;
    transform: none !important;
    animation: none !important;
    opacity: 1 !important;
    flex: 1 1 calc(50% - 1rem);
    min-width: 220px;
  }

  .home-about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-split-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .why-choose-wrapper {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

  /* Division Hub Tablet Layout */
  .division-hub-wrapper {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .hub-nav-dock {
    flex-direction: row;
    overflow-x: auto;
    gap: 0.65rem;
    padding-bottom: 0.65rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .hub-nav-item {
    flex: 0 0 auto;
    width: auto;
    min-width: 200px;
    padding: 0.85rem 1rem;
  }

  .hub-stage {
    padding: 2rem 1.75rem;
    min-height: auto;
  }

  .hub-panel-title {
    font-size: 1.5rem;
  }

  .capabilities-grid-six {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }

  .why-grid-six {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }

  .contact-preview-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }

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

  .process-timeline::before {
    display: none; /* Hide horizontal connecting line on 2-col tablet layout */
  }

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

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

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

/* --- 3. TABLETS PORTRAIT & MOBILE SCREENS (Max 768px) --- */
@media (max-width: 768px) {
  :root {
    --header-height: 70px;
    --space-2xl: 2.75rem;
    --space-xl: 2rem;
    --space-lg: 1.5rem;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.6rem;
  }

  h3 {
    font-size: 1.2rem;
  }

  /* Navigation Drawer for Mobile */
  .mobile-nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .nav-menu-wrapper {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(10, 25, 47, 0.7);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
  }

  .nav-menu-wrapper.open {
    opacity: 1;
    visibility: visible;
  }

  .nav-menu {
    position: absolute;
    top: 0;
    left: 0;
    width: 85%;
    max-width: 320px;
    height: 100%;
    background-color: #FFFFFF;
    flex-direction: column;
    align-items: flex-start;
    padding: 2rem 1.5rem;
    gap: 1.25rem;
    box-shadow: var(--shadow-lg);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    overflow-y: auto;
  }

  .nav-menu-wrapper.open .nav-menu {
    transform: translateX(0);
  }

  .nav-link {
    width: 100%;
    font-size: 1.05rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
  }

  .nav-link::after {
    display: none;
  }

  .nav-link.active {
    color: var(--color-secondary);
    font-weight: 700;
  }

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

  .nav-menu .mobile-drawer-cta {
    display: block;
    width: 100%;
    margin-top: 1rem;
  }

  /* Top division bar on mobile */
  .top-division-inner {
    justify-content: center;
    text-align: center;
  }

  .top-division-contact {
    display: none;
  }

  .top-division-items {
    justify-content: center;
    font-size: 0.75rem;
    gap: 0.4rem;
  }

  /* Responsive Hero Section on Mobile */
  .hero-section {
    padding: 3rem 0 3.5rem 0;
  }

  .hero-title {
    font-size: 2.15rem;
  }

  .hero-features-strip {
    justify-content: flex-start;
    gap: 1.25rem;
    padding-top: 1.5rem;
    margin-top: 1.75rem;
  }

  .hero-stage-container {
    padding: 0;
    max-width: 100%;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
  }

  .hero-mobile-image-card {
    width: 100%;
    max-width: 100%;
    margin-bottom: 0.75rem;
  }

  .hero-floating-card {
    position: static !important;
    transform: none !important;
    animation: none !important;
    opacity: 1 !important;
    padding: 0.55rem 0.85rem;
    flex: 1 1 calc(50% - 0.75rem);
    min-width: 220px;
    box-shadow: 0 4px 12px rgba(10, 25, 47, 0.06);
  }

  /* Services Grid Stacking */
  .services-grid {
    grid-template-columns: 1fr;
  }

  .hub-nav-item {
    min-width: 175px;
    padding: 0.75rem 0.85rem;
  }

  .hub-item-sub {
    display: none;
  }

  .hub-stage {
    padding: 1.65rem 1.25rem;
  }

  .hub-panel-title {
    font-size: 1.35rem;
  }

  .hub-service-capsule {
    width: 100%;
    justify-content: flex-start;
  }

  .hub-panel-footer {
    flex-direction: column;
    align-items: stretch;
    gap: 0.85rem;
  }

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

  .why-grid-six {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .contact-preview-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .why-points-list {
    grid-template-columns: 1fr;
  }

  .service-scope-list {
    grid-template-columns: 1fr;
  }

  .capabilities-grid-six {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  /* ==========================================================================
     MOBILE CONNECTED PROCESS TIMELINE (VERTICAL CONNECTED LINE)
     ========================================================================== */
  .process-timeline {
    grid-template-columns: 1fr;
    gap: 1.5rem;
    position: relative;
    padding-left: 2.25rem;
  }

  /* Vertical connecting line */
  .process-timeline::before {
    display: block;
    position: absolute;
    top: 24px;
    bottom: 24px;
    left: 20px;
    right: auto;
    width: 2px;
    height: auto;
    background-color: var(--color-border);
  }

  .process-step {
    position: relative;
  }

  .step-marker {
    position: absolute;
    top: 10px;
    left: -2.25rem;
    width: 40px;
    height: 40px;
    font-size: 0.85rem;
    margin-bottom: 0;
    box-shadow: 0 0 0 4px #FFFFFF;
  }

  .step-card {
    padding: 1.25rem;
  }

  .matrix-grid {
    grid-template-columns: 1fr;
  }

  .mission-vision-grid {
    grid-template-columns: 1fr;
  }

  .what-we-provide-grid {
    grid-template-columns: 1fr;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .enquiry-form-card {
    padding: 1.75rem 1.25rem;
  }

  .contact-info-panel {
    padding: 1.75rem 1.25rem;
  }

  .cta-banner {
    padding: 2.25rem 1.25rem;
  }

  .cta-banner h2 {
    font-size: 1.75rem;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-col h4,
  .footer-logo-wrap {
    height: auto;
    margin-bottom: 0.75rem;
  }

  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* --- 4. SMALL MOBILE SCREENS (Max 480px) --- */
@media (max-width: 480px) {
  :root {
    --container-padding: 1rem;
  }

  .brand-name {
    font-size: 1.1rem;
  }

  .brand-subtitle {
    font-size: 0.65rem;
  }

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

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn,
  .hero-actions .btn-hero-primary,
  .hero-actions .btn-hero-secondary {
    width: 100%;
    justify-content: center;
  }

  .hero-features-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .hero-floating-card {
    flex: 1 1 100% !important;
    width: 100% !important;
    max-width: 100% !important;
    opacity: 1 !important;
  }

  .service-detail-header {
    flex-direction: column;
    gap: 0.75rem;
  }

  .service-card {
    padding: 1.35rem;
  }

  .service-detail-card {
    padding: 1.35rem;
  }

  .filter-btn {
    padding: 0.45rem 0.85rem;
    font-size: 0.82rem;
  }
}