/* ============================================
   Arthaya — Responsive Styles
   ============================================ */

@media (max-width: 1200px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-content {
    max-width: 100%;
    margin: 0 auto;
  }

  .hero-desc {
    margin-left: auto;
    margin-right: auto;
  }

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

  .hero-trust-row {
    justify-content: center;
  }

  .hero-visual {
    max-width: 440px;
    margin: 0 auto;
  }

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

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

/* Desktop nav — full horizontal links, no hamburger */
@media (min-width: 1025px) {
  .nav-toggle {
    display: none !important;
  }

  .nav-links {
    position: static;
    transform: none;
    width: auto;
    height: auto;
    max-height: none;
    flex-direction: row;
    align-items: center;
    background: transparent;
    box-shadow: none;
    padding: 0;
    overflow: visible;
    border: none;
  }

  .nav-links li {
    width: auto;
  }

  .nav-links a {
    display: inline-block;
    width: auto;
    padding: 8px 11px;
    font-size: 0.8125rem;
    border-bottom: none;
    white-space: nowrap;
  }

  .nav-links .nav-cta {
    margin: 0 0 0 10px;
    padding: 9px 20px;
    text-align: center;
    font-size: 0.75rem;
  }

  .nav-mobile-extras {
    display: none !important;
  }

  .nav-overlay {
    display: none !important;
  }
}

/* ── Tablet & mobile nav ── */
@media (max-width: 1024px) {
  :root {
    --utility-height: 0px;
    --header-height: var(--nav-height);
  }

  .top-bar {
    display: none;
  }

  body > header {
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.12);
  }

  body.nav-open > header {
    z-index: 1100;
  }

  .section {
    padding: 80px 0;
  }

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

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

  .stat-item {
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.08);
    padding-bottom: 32px;
  }

  .stat-item:nth-child(3),
  .stat-item:nth-child(4) {
    border-bottom: none;
  }

  .value-grid,
  .philosophy-section,
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

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

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

  /* Navbar always solid when hamburger is shown */
  .navbar,
  .navbar:not(.scrolled):not(.navbar--solid) {
    background: rgba(11, 31, 58, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 2px 16px rgba(0,0,0,0.12);
    border-bottom-color: rgba(200,164,77,0.1);
  }

  .navbar .container {
    gap: 12px;
    padding-left: 20px;
    padding-right: 20px;
  }

  .nav-toggle {
    display: flex;
  }

  .nav-toggle.active {
    position: fixed;
    top: calc(14px + env(safe-area-inset-top, 0px));
    right: 16px;
  }

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

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

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

  /* Off-canvas menu */
  .nav-links {
    position: fixed;
    top: 0;
    right: 0;
    width: min(320px, 88vw);
    height: 100%;
    height: 100dvh;
    max-height: 100dvh;
    background: var(--primary-dark);
    flex-direction: column;
    align-items: stretch;
    padding: calc(env(safe-area-inset-top, 0px) + var(--header-height) + 16px) 24px calc(env(safe-area-inset-bottom, 0px) + 24px);
    gap: 0;
    transform: translateX(100%);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: -8px 0 32px rgba(0,0,0,0.3);
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    z-index: 1050;
    border-left: 1px solid rgba(200,164,77,0.12);
  }

  .nav-links.open {
    transform: translateX(0);
    pointer-events: auto;
  }

  .nav-links li {
    width: 100%;
  }

  .nav-links a {
    display: block;
    position: relative;
    z-index: 1;
    pointer-events: auto;
    width: 100%;
    padding: 15px 4px;
    font-size: 1rem;
    border-bottom: 1px solid rgba(255,255,255,0.07);
    white-space: normal;
  }

  .nav-links a::after {
    display: none;
  }

  .nav-links .nav-cta {
    margin: 20px 0 0;
    padding: 14px 20px;
    text-align: center;
    font-size: 0.8125rem;
    border: none;
    border-radius: var(--radius-sm);
  }

  .nav-mobile-extras {
    display: block;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.1);
  }

  .nav-overlay {
    position: fixed;
    inset: 0;
    background: transparent;
    z-index: 1040;
    opacity: 0;
    visibility: hidden;
    transition: visibility 0.35s ease;
  }

  .nav-overlay.active {
    opacity: 1;
    visibility: visible;
  }
}

/* ── Phones ── */
@media (max-width: 768px) {
  :root {
    --nav-height: 60px;
    --header-height: calc(var(--nav-height) + env(safe-area-inset-top, 0px));
  }
  .navbar {
    padding-top: env(safe-area-inset-top, 0px);
    height: calc(var(--nav-height) + env(safe-area-inset-top, 0px));
  }

  .navbar .container {
    padding-left: 16px;
    padding-right: 12px;
  }

  .navbar-logo img {
    height: 32px;
    max-width: 160px;
    object-fit: contain;
    object-position: left center;
  }

  .nav-links {
    width: 100%;
    max-width: 100%;
    padding-top: calc(env(safe-area-inset-top, 0px) + var(--nav-height) + 20px);
  }

  .nav-toggle.active {
    top: calc(10px + env(safe-area-inset-top, 0px));
    right: 12px;
  }

  .hero {
    min-height: auto;
    padding-bottom: 48px;
    padding-top: var(--header-height);
  }

  .page-hero {
    padding-top: calc(var(--header-height) + 48px);
    padding-bottom: 56px;
  }

  .section {
    padding: 64px 0;
  }

  .section-header {
    margin-bottom: 44px;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: stretch;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  .hero-trust-row {
    flex-direction: column;
    gap: 14px;
    align-items: center;
  }

  .trust-strip-inner {
    gap: 20px;
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .trust-strip-inner::-webkit-scrollbar {
    display: none;
  }

  .trust-grid,
  .services-grid,
  .about-grid,
  .industries-grid,
  .process-preview {
    grid-template-columns: 1fr;
  }

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

  .stat-item h3 {
    font-size: 2.25rem;
  }

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

  .form-card {
    padding: 28px 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .cta-band-inner {
    padding: 36px 24px;
  }

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

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

  .back-to-top {
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
    right: 16px;
    width: 44px;
    height: 44px;
  }

  .toast-container {
    top: calc(var(--nav-height) + env(safe-area-inset-top, 0px) + 12px);
    left: 16px;
    right: 16px;
  }

  .toast {
    max-width: 100%;
  }

  .timeline {
    --timeline-track-pad: 38px;
    --timeline-rail: 17px;
    --timeline-dot-size: 15px;
  }

  .timeline-item {
    padding-bottom: 46px;
  }
}

/* ── Small phones ── */
@media (max-width: 576px) {
  .container {
    padding: 0 16px;
  }

  .navbar .container {
    padding-left: 14px;
    padding-right: 10px;
  }

  .navbar-logo img {
    height: 28px;
    max-width: 140px;
  }

  .trust-card,
  .service-card,
  .about-card {
    padding: 28px 20px;
  }

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

  .stat-item {
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }

  .stat-item:last-child {
    border-bottom: none;
  }

  .timeline {
    --timeline-track-pad: 36px;
    --timeline-rail: 17px;
    --timeline-dot-size: 15px;
  }

  .timeline-item {
    padding-bottom: 44px;
  }

  .error-content h1 {
    font-size: 4rem;
  }

  .hero h1 {
    font-size: 1.875rem;
  }

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

@media (max-width: 380px) {
  .navbar-logo img {
    height: 26px;
    max-width: 120px;
  }

  .nav-links a {
    font-size: 0.9375rem;
    padding: 14px 4px;
  }

  .timeline {
    --timeline-track-pad: 28px;
    --timeline-rail: 14px;
    --timeline-dot-size: 14px;
  }

  .timeline-item {
    padding-bottom: 40px;
  }
}