.material-symbols-outlined {
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  }
  .icon-fill {
    font-variation-settings: 'FILL' 1, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  }
  .glass-nav {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
  }
  .asymmetric-offset {
    transform: translateY(12%);
  }
  .ambient-shadow {
    box-shadow: 0 40px 80px -12px rgba(27, 27, 28, 0.07);
  }
  .trust-badge-shadow {
    box-shadow: 0 20px 40px -8px rgba(0, 71, 141, 0.18);
  }
  .img-overlay::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to bottom, rgba(0,71,141,0.15), rgba(0,71,141,0.45));
  }

  /* ── God rays + Lens Flare animations ── */
  .god-ray {
    position:absolute; top:0; right:0;
    transform-origin: right center;
    background: linear-gradient(to left, rgba(255,215,70,0.45), rgba(255,200,50,0.12) 55%, transparent 85%);
    mix-blend-mode: screen;
    border-radius: 0 0 0 50%;
  }
  @keyframes rayBreath1 { 0%,100%{opacity:0.18} 50%{opacity:0.55} }
  @keyframes rayBreath2 { 0%,100%{opacity:0.22} 50%{opacity:0.50} }
  @keyframes rayBreath3 { 0%,100%{opacity:0.15} 50%{opacity:0.48} }
  @keyframes sunGlow    { 0%,100%{opacity:0.7;transform:scale(1)} 50%{opacity:1;transform:scale(1.12)} }
  @keyframes flareStreak{ 0%,100%{opacity:0.3;transform:scaleX(1)} 50%{opacity:0.65;transform:scaleX(1.06)} }
  @keyframes ghostPulse { 0%,100%{opacity:0.35} 50%{opacity:0.85} }

  /* ── Mountain cloud animations ── */
  @keyframes cloudDrift1 {
    0%   { transform: translateX(-18px); opacity: 1; }
    50%  { transform: translateX(8px);  opacity: 0.85; }
    100% { transform: translateX(22px); opacity: 1; }
  }
  @keyframes cloudDrift2 {
    0%   { transform: translateX(14px) scaleX(1);    opacity: 1; }
    50%  { transform: translateX(-6px) scaleX(1.04); opacity: 0.9; }
    100% { transform: translateX(-20px) scaleX(0.98); opacity: 1; }
  }
  @keyframes cloudDrift3 {
    0%   { transform: translateX(-12px) translateY(2px);  opacity: 1; }
    100% { transform: translateX(16px)  translateY(-2px); opacity: 0.8; }
  }
  @keyframes cloudPuff1 {
    0%   { transform: translateX(-10px) scaleX(1);    opacity: 0.9; }
    60%  { transform: translateX(4px)   scaleX(1.08); opacity: 1;   }
    100% { transform: translateX(16px)  scaleX(1.02); opacity: 0.85; }
  }
  @keyframes cloudPuff2 {
    0%   { transform: translateX(12px)  scaleX(1);    opacity: 0.85; }
    50%  { transform: translateX(-4px)  scaleX(1.06); opacity: 1;    }
    100% { transform: translateX(-16px) scaleX(0.96); opacity: 0.9;  }
  }
  /* Language Toggle */
  .lang-toggle {
    display: inline-flex;
    align-items: center;
    background: #f0edee;
    border-radius: 9999px;
    padding: 3px;
    gap: 0;
    transition: background 0.3s ease;
  }
  .lang-toggle button {
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    padding: 8px 14px;
    border-radius: 9999px;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    background: transparent;
    color: #727783;
    font-family: 'Manrope', sans-serif;
  }
  .lang-toggle button.active {
    background: #00478d;
    color: #ffffff;
  }
  /* ── Night Mode ── */
  .night-mode .hero-bg-img {
    filter: brightness(0.35) saturate(0.5) hue-rotate(-15deg);
    transition: filter 0.8s ease;
  }
  .hero-bg-img { transition: filter 0.8s ease; }
  .night-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to bottom, rgba(8,15,40,0.55) 0%, rgba(10,20,50,0.35) 40%, rgba(5,10,30,0.2) 100%);
    opacity: 0; transition: opacity 0.8s ease; pointer-events: none; z-index: 1;
  }
  .night-mode .night-overlay { opacity: 1; }
  .night-mode .day-gradient { background: linear-gradient(to top, rgba(0,0,0,0.85), rgba(5,10,30,0.40) 50%, rgba(8,15,40,0.25)); }
  .god-rays-container { transition: opacity 0.8s ease; }
  .night-mode .god-rays-container { opacity: 0 !important; }
  /* ── Moon ── */
  .night-moon {
    position: absolute; top: 6%; left: 18%; z-index: 3;
    width: 70px; height: 70px;
    background: url('../img/moon.png') center/contain no-repeat, radial-gradient(circle at 35% 35%, #fffbe6 0%, #f5e6b8 30%, #d4c496 60%, #b8a87a 100%);
    border-radius: 50%;
    filter: brightness(4) contrast(0.4) saturate(0.05) sepia(0.3) drop-shadow(0 0 20px rgba(255,240,180,1)) drop-shadow(0 0 60px rgba(255,230,150,0.7)) drop-shadow(0 0 120px rgba(255,220,120,0.35));
    opacity: 0; transition: opacity 0.8s ease;
    pointer-events: none;
  }
  .night-mode .night-moon { opacity: 1; }
  /* ── Moonlight glow ── */
  .moonlight-glow {
    position: absolute; inset: 0; z-index: 2; pointer-events: none;
    background: radial-gradient(ellipse 60% 50% at 22% 15%, rgba(160,190,240,0.25) 0%, rgba(120,160,220,0.08) 40%, transparent 70%);
    opacity: 0; transition: opacity 0.8s ease;
  }
  .night-mode .moonlight-glow { opacity: 1; }
  /* ── Dark mode images ── */
  .dark-mode .dm-img-dark {
    filter: brightness(0.75) saturate(0.85) !important;
    transition: filter 0.4s ease;
  }
  .night-stars { position: absolute; inset: 0; pointer-events: none; z-index: 4; opacity: 0; transition: opacity 0.8s ease; }
  .night-mode .night-stars { opacity: 1; }
  @keyframes twinkle { 0%,100%{opacity:0.2} 50%{opacity:1} }
  @keyframes twinkle2 { 0%,100%{opacity:0.7} 50%{opacity:0.1} }
  @keyframes twinkle3 { 0%,100%{opacity:0.15} 35%{opacity:0.95} 65%{opacity:0.2} }
  @keyframes twinkle4 { 0%{opacity:0.3} 20%{opacity:1} 40%{opacity:0.2} 60%{opacity:0.9} 80%{opacity:0.15} 100%{opacity:0.3} }
  /* ── ISS flyover (6s flight, 34s pause = 40s cycle) ── */
  .iss-track {
    position: absolute; z-index: 5;
    width: 2px; height: 2px; border-radius: 50%;
    background: #fff;
    box-shadow: 0 0 3px 1px rgba(255,255,240,0.7);
    opacity: 0; pointer-events: none;
    animation: issFly 40s linear infinite;
    animation-delay: 0s;
  }
  .night-mode .iss-track { opacity: 1; }
  @keyframes issFly {
    0%   { left: -1%; top: 11%; opacity: 0; }
    0.5% { opacity: 0.8; }
    14%  { opacity: 0.8; }
    15%  { left: 101%; top: 11%; opacity: 0; }
    100% { left: 101%; top: 11%; opacity: 0; }
  }

  /* ── Shooting Stars ── */
  .shooting-stars-container {
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 25%;
    pointer-events: none;
    overflow: hidden;
    z-index: 5; /* Shooting stars – in front of moon & stars */
  }
  .shooting-star {
    position: absolute;
    width: 120px;
    height: 2px;
    background: linear-gradient(to right, transparent, rgba(255,255,255,0.4) 70%, rgba(255,255,255,0.9));
    border-radius: 1px;
    opacity: 0;
    filter: blur(0.3px);
  }
  .shooting-star::after {
    content: '';
    position: absolute;
    left: auto; right: 0;
    top: -1px;
    width: 4px;
    height: 4px;
    background: white;
    border-radius: 50%;
    box-shadow: 0 0 6px 2px rgba(255,255,255,0.6);
  }

  /* ── Time-lapse: Stars ── */
  @keyframes starDrift  { from{transform:translate(0,0)} to{transform:translate(110px,-7px)} }
  @keyframes starDrift2 { from{transform:translate(0,0)} to{transform:translate( 90px,-5px)} }
  @keyframes starDrift3 { from{transform:translate(0,0)} to{transform:translate(130px,-9px)} }
  @keyframes starFade   { 0%,100%{opacity:0.9} 50%{opacity:0.4} }

  /* ── Airplane contrails ── */
  @keyframes flyPlane1 { from{transform:translate(-470px, 0)} to{transform:translate(calc(100vw + 470px), -50px)} }
  @keyframes flyPlane2 { from{transform:translate(-260px, 0)} to{transform:translate(calc(100vw + 260px), 15px)} }
  @keyframes contrailFade { 0%{opacity:0} 5%{opacity:0.8} 90%{opacity:0.7} 100%{opacity:0} }
  @keyframes planeStrobe {
    0%,9%{opacity:0;box-shadow:none}
    2%{opacity:1;box-shadow:0 0 8px 4px rgba(255,255,255,0.9)}
    4%{opacity:0;box-shadow:none}
    6%{opacity:1;box-shadow:0 0 6px 3px rgba(255,255,255,0.8)}
    8%{opacity:0;box-shadow:none}
    100%{opacity:0;box-shadow:none}
  }
  @keyframes redBeacon {
    0%,44%{opacity:0.1;box-shadow:none}
    50%{opacity:1;box-shadow:0 0 8px 4px rgba(255,40,40,0.9)}
    56%,100%{opacity:0.1;box-shadow:none}
  }

  /* Cloud layers animated via JS requestAnimationFrame (no CSS loop = no Safari flash) */

  /* Nav transparent / solid states */
  #mainNav { transition: box-shadow 0.3s ease; }
  #mainNav.nav-solid {
    box-shadow: 0 1px 8px rgba(0,0,0,0.08);
  }
  #mainNav.nav-transparent { background: transparent; }
  #mainNav.nav-transparent .nav-link { color: rgba(255,255,255,0.88) !important; }
  #mainNav.nav-transparent .nav-link:hover { color: #ffffff !important; }
  #mainNav.nav-transparent .nav-active-link { color: white !important; border-color: white !important; }
  #mainNav.nav-solid .nav-link { color: #475569; }
  #mainNav.nav-solid .nav-link:hover { color: #00478d; }
  #mainNav.nav-solid .nav-active-link { color: #00478d; border-color: #00478d; }
  .nav-logo-color, .nav-logo-white { display: none; }
  #mainNav.nav-transparent .nav-logo-white { display: inline-block; }
  #mainNav.nav-solid .nav-logo-color { display: inline-block; }
  #mainNav.nav-transparent .brand-trust { color: white; }
  #mainNav.nav-transparent .brand-now   { color: rgba(255,255,255,0.8); }
  #mainNav.nav-solid .brand-trust { color: #002B80; }
  #mainNav.nav-solid .brand-now   { color: #0077B6; }
  #mainNav.nav-transparent .lang-toggle { background: rgba(255,255,255,0.15); }
  #mainNav.nav-transparent .lang-toggle button { color: rgba(255,255,255,0.8); }
  #mainNav.nav-transparent .lang-toggle button.active { background: rgba(255,255,255,0.92); color: #00478d; }
  #mainNav.nav-transparent .nav-cta { background: rgba(255,255,255,0.15); color: white; border: 1px solid rgba(255,255,255,0.35); }
  #mainNav.nav-solid .nav-cta { background: #00478d; color: white; border: none; }

  /* ── Hamburger lines ── */
  .ham-line { background: white; }
  #mainNav.nav-solid .ham-line { background: #1f2937; }

  /* ── Mobile menu panel ── */
  #mobileMenu { background: rgba(3,30,100,0.97); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px); }
  #mainNav.nav-solid #mobileMenu { background: rgba(255,255,255,0.97); }

  /* ── Mobile nav links ── */
  .nav-mob-link {
    display: block; padding: 12px 16px; border-radius: 10px;
    font-size: 15px; font-weight: 500; color: rgba(255,255,255,0.9);
    text-decoration: none; transition: background 0.2s, color 0.2s;
    font-family: 'Manrope', sans-serif;
  }
  .nav-mob-link:hover { background: rgba(255,255,255,0.12); color: #ffffff; }
  #mainNav.nav-solid .nav-mob-link { color: #374151; }
  #mainNav.nav-solid .nav-mob-link:hover { background: #f3f4f6; color: #00478d; }

  /* ── Hamburger → X animation ── */
  #mobileMenuBtn.is-open .ham-line:nth-child(1) { transform: translateY(8px) rotate(45deg); }
  #mobileMenuBtn.is-open .ham-line:nth-child(2) { opacity: 0; transform: scaleX(0); }
  #mobileMenuBtn.is-open .ham-line:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

  /* ── Dark Mode Toggle Button ── */
  .theme-toggle {
    display: inline-flex; align-items: center; justify-content: center;
    width: 38px; height: 38px; border-radius: 12px; border: 1.5px solid rgba(255,255,255,.2);
    cursor: pointer; background: rgba(255,255,255,.08); backdrop-filter: blur(8px);
    padding: 0; position: relative; overflow: hidden; flex-shrink: 0;
    transition: all .35s cubic-bezier(.4,0,.2,1);
  }
  .theme-toggle:hover { background: rgba(255,255,255,.18); border-color: rgba(255,255,255,.4); transform: scale(1.08); }
  .theme-toggle:active { transform: scale(.92); }
  .theme-toggle .dm-icon {
    position: absolute; width: 20px; height: 20px;
    transition: transform .5s cubic-bezier(.4,0,.2,1), opacity .35s ease;
  }
  .theme-toggle .dm-icon-sun { opacity: 1; transform: rotate(0deg) scale(1); }
  .theme-toggle .dm-icon-moon { opacity: 0; transform: rotate(120deg) scale(0); }
  .dark-mode .theme-toggle .dm-icon-sun { opacity: 0; transform: rotate(-120deg) scale(0); }
  .dark-mode .theme-toggle .dm-icon-moon { opacity: 1; transform: rotate(0deg) scale(1); }
  /* Navbar context styles */
  #mainNav.nav-transparent .theme-toggle { border-color: rgba(255,255,255,.2); }
  #mainNav.nav-solid .theme-toggle { background: #f1f5f9; border-color: #e2e8f0; }
  #mainNav.nav-solid .theme-toggle:hover { background: #e2e8f0; border-color: #cbd5e1; }
  .dark-mode #mainNav.nav-solid .theme-toggle { background: #1e293b; border-color: #334155; }
  .dark-mode #mainNav.nav-solid .theme-toggle:hover { background: #334155; border-color: #475569; }

  /* ══════════════════════════════════════════
     DARK MODE — site-wide overrides
     ══════════════════════════════════════════ */
  .dark-mode { color-scheme: dark; }

  /* Body & general backgrounds */
  .dark-mode.bg-background { background-color: #0f172a; color: #e2e8f0; }

  /* Nav solid state */
  .dark-mode #mainNav.nav-solid { background: rgba(15,23,42,0.95); box-shadow: 0 1px 8px rgba(0,0,0,0.3); }
  .dark-mode #mainNav.nav-solid .nav-link { color: #94a3b8; }
  .dark-mode #mainNav.nav-solid .nav-link:hover { color: #60a5fa; }
  .dark-mode #mainNav.nav-solid .nav-active-link { color: #60a5fa; border-color: #60a5fa; }
  .dark-mode #mainNav.nav-solid .brand-trust { color: #93c5fd; }
  .dark-mode #mainNav.nav-solid .brand-now { color: #60a5fa; }
  .dark-mode #mainNav.nav-solid .ham-line { background: #e2e8f0; }
  .dark-mode #mainNav.nav-solid #mobileMenu { background: rgba(15,23,42,0.97); }
  .dark-mode #mainNav.nav-solid .nav-mob-link { color: #cbd5e1; }
  .dark-mode #mainNav.nav-solid .nav-mob-link:hover { background: #1e293b; color: #60a5fa; }
  .dark-mode #mainNav.nav-solid .nav-cta { background: #1d4ed8; color: white; }
  .dark-mode #mainNav.nav-solid .lang-toggle { background: #1e293b; }
  .dark-mode #mainNav.nav-solid .lang-toggle button { color: #94a3b8; }
  .dark-mode #mainNav.nav-solid .lang-toggle button.active { background: #1d4ed8; color: #fff; }

  /* ── Dark Mode helper classes ── */
  .dm-input { background-color: #1e293b !important; }
  .dm-bg-primary { background-color: #0f172a; }
  .dm-bg-secondary { background-color: #1e293b; }
  .dm-bg-tertiary { background-color: #334155; }

  /* ── Reduced Motion ── */
  @media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
      animation: none !important;
      transition: none !important;
    }
    .shooting-stars-container,
    .iss-track,
    .god-rays-container,
    #cloudLayerA, #cloudLayerB, #cloudLayerC {
      display: none !important;
    }
    /* Hide contrail wrapper (airplane contrails, z-index:7) */
    .absolute.inset-0.overflow-hidden.pointer-events-none[style*="z-index:7"] {
      display: none !important;
    }
  }