:root {
  --bg: #F6FAFB;
  --surface: #FFFFFF;
  --cyan-50: #EFFAFC;
  --cyan-100: #E3F5FA;
  --cyan-300: #7FD4E8;
  --cyan-500: #00A6CE;
  --cyan-600: #0090B4;
  --navy-900: #0A2A3B;
  --navy-950: #061C28;
  --navy-800: #0D3548;
  --navy-700: #0F5478;
  --navy-600: #146794;
  --slate-500: #56707C;
  --slate-300: #A9BCC3;
  --amber-500: #F2A93B;
  --amber-600: #D98F1F;

  --shadow-soft: 0 4px 24px rgba(10, 42, 59, 0.06);
  --shadow-med: 0 12px 40px rgba(10, 42, 59, 0.12);
  --shadow-lift: 0 20px 48px rgba(10, 42, 59, 0.16);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --duration-fast: 150ms;
  --duration-base: 200ms;
  --duration-slow: 300ms;

  --font-heading: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;

  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --color-primary: var(--cyan-500);
  --color-primary-hover: var(--cyan-600);
  --color-primary-rgb: 0, 166, 206;

  --shadow-sm: 0 1px 3px rgba(10, 42, 59, 0.10), 0 1px 2px rgba(10, 42, 59, 0.06);
  --shadow-blue: 0 4px 14px -2px rgba(0, 166, 206, 0.30);
  --shadow-blue-lg: 0 8px 24px -4px rgba(0, 166, 206, 0.35);
}

* { box-sizing: border-box; }

:focus-visible { outline: 2px solid var(--cyan-500); outline-offset: 2px; }

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--navy-900);
  font-family: 'Inter', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
}

footer.bg-navy-900 {
  position: relative;
  background:
    radial-gradient(50% 65% at 10% 0%, rgba(0, 166, 206, 0.18), transparent 70%),
    var(--navy-950);
}

/* Thin accent line across the top edge of the footer */
footer.bg-navy-900::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan-500), transparent 55%);
}

h1, h2, h3, h4, .font-display {
  font-family: 'Space Grotesk', 'Inter', system-ui, sans-serif;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

.lens-frame {
  position: relative;
  border-radius: 50% / 40%;
  overflow: hidden;
  isolation: isolate;
}

.lens-frame::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.35);
  pointer-events: none;
}

.lens-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  animation: lens-zoom 24s var(--ease-out) infinite;
}

@keyframes lens-zoom {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.14); }
}

.lens-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 3;
  border-radius: inherit;
  background: linear-gradient(115deg, transparent 35%, rgba(255, 255, 255, 0.22) 50%, transparent 65%);
  transform: translateX(-130%) skewX(-12deg);
  animation: lens-sheen 8s ease-in-out infinite;
  pointer-events: none;
}

@keyframes lens-sheen {
  0%, 60% { transform: translateX(-130%) skewX(-12deg); }
  85%, 100% { transform: translateX(130%) skewX(-12deg); }
}

.lens-frame--wide { border-radius: 50% / 32%; }
.lens-frame--tight { border-radius: 50% / 46%; }

.focus-ring {
  position: absolute;
  inset: -14px;
  border-radius: 50% / 40%;
  border: 1.5px solid var(--cyan-500);
  opacity: 0;
  transform: scale(1.12);
  pointer-events: none;
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
  z-index: 5;
}

.is-revealed .focus-ring {
  opacity: 0.55;
  transform: scale(1);
}

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}

.reveal.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

.reveal-stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s var(--ease-out), transform 0.7s var(--ease-out);
}

.reveal-stagger.is-revealed > *:nth-child(1) { transition-delay: 0.02s; }
.reveal-stagger.is-revealed > *:nth-child(2) { transition-delay: 0.10s; }
.reveal-stagger.is-revealed > *:nth-child(3) { transition-delay: 0.18s; }
.reveal-stagger.is-revealed > *:nth-child(4) { transition-delay: 0.26s; }
.reveal-stagger.is-revealed > *:nth-child(5) { transition-delay: 0.34s; }
.reveal-stagger.is-revealed > *:nth-child(6) { transition-delay: 0.42s; }

.reveal-stagger.is-revealed > * {
  opacity: 1;
  transform: translateY(0);
}

#site-header {
  transition: background-color 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out), padding 0.3s var(--ease-out);
}

#site-header.is-scrolled {
  box-shadow: var(--shadow-soft);
}

.nav-link {
  position: relative;
  color: var(--navy-800);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 2px;
  background: var(--cyan-500);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease-out);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  transform: scaleX(1);
}

.nav-link.is-active {
  color: var(--navy-700);
  font-weight: 600;
}

#mobile-menu {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s var(--ease-out);
}

#mobile-menu.is-open {
  max-height: 480px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: 14px 24px;
  font-size: 14px;
  font-weight: 600;
  font-family: var(--font-heading);
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--duration-base) var(--ease-out);
  white-space: nowrap;
  line-height: 1;
  text-decoration: none;
}

#site-header .btn {
  padding: 10px 20px;
}

.btn-primary {
  position: relative;
  background: linear-gradient(180deg, rgba(255,255,255,0.20) 0%, rgba(255,255,255,0) 50%, rgba(0,0,0,0.08) 100%), var(--navy-700);
  color: #fff;
  box-shadow: 0 4px 14px -2px rgba(10, 42, 59, 0.35), inset 0 1px 0 rgba(255,255,255,0.22);
}

.btn-primary:hover {
  background: linear-gradient(180deg, rgba(255,255,255,0.22) 0%, rgba(255,255,255,0) 50%, rgba(0,0,0,0.06) 100%), var(--navy-800);
  box-shadow: 0 8px 24px -4px rgba(10, 42, 59, 0.40), inset 0 1px 0 rgba(255,255,255,0.25);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm), inset 0 2px 4px rgba(0,0,0,0.12);
}

.btn-accent {
  position: relative;
  background: linear-gradient(180deg, rgba(255,255,255,0.20) 0%, rgba(255,255,255,0) 50%, rgba(0,0,0,0.08) 100%), var(--cyan-500);
  color: #fff;
  box-shadow: var(--shadow-blue), inset 0 1px 0 rgba(255,255,255,0.22);
}

.btn-accent:hover {
  background: linear-gradient(180deg, rgba(255,255,255,0.22) 0%, rgba(255,255,255,0) 50%, rgba(0,0,0,0.06) 100%), var(--cyan-600);
  box-shadow: var(--shadow-blue-lg), inset 0 1px 0 rgba(255,255,255,0.25);
  transform: translateY(-1px);
}

.btn-accent:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm), inset 0 2px 4px rgba(0,0,0,0.12);
}

.btn-primary::after,
.btn-accent::after {
  content: '';
  position: absolute;
  top: 1px; left: 6px; right: 6px;
  height: 45%;
  background: linear-gradient(180deg, rgba(255,255,255,0.28) 0%, rgba(255,255,255,0) 100%);
  border-radius: var(--radius-md) var(--radius-md) 50% 50%;
  pointer-events: none;
}

.btn-ghost {
  background: transparent;
  color: var(--navy-800);
  border: 1.5px solid var(--slate-300);
}

.btn-ghost:hover {
  border-color: var(--cyan-500);
  color: var(--cyan-600);
  background: rgba(0, 166, 206, 0.06);
  transform: translateY(-1px);
}

.btn-light {
  background: transparent;
  color: #fff;
  border: 1.5px solid rgba(255, 255, 255, 0.4);
}

.btn-light:hover {
  border-color: #fff;
  background: rgba(255, 255, 255, 0.1);
  transform: translateY(-1px);
}

.btn-full { width: 100%; }

.btn-sm { padding: 6px 14px; font-size: 13px; }

.btn-lg { padding: 14px 28px; font-size: 15px; border-radius: var(--radius-lg); }

.card {
  background: var(--surface);
  border-radius: 1.25rem;
  box-shadow: var(--shadow-soft);
  transition: transform 0.35s var(--ease-out), box-shadow 0.35s var(--ease-out);
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lift);
}

.cta-banner {
  position: relative;
  isolation: isolate;
}

.cta-banner::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image: url("../img/brand-banner.jpg");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

@media (max-width: 768px) {
  .cta-banner::before {
    background-attachment: scroll;
  }
}

.dot-grid {
  background-image: radial-gradient(var(--cyan-500) 1px, transparent 1px);
  background-size: 14px 14px;
  opacity: 0.35;
}

.text-gradient {
  background: linear-gradient(100deg, var(--navy-700), var(--cyan-500));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.marquee-track {
  display: flex;
  width: max-content;
  animation: marquee 32s linear infinite;
}

@keyframes marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.marquee-wrap:hover .marquee-track {
  animation-play-state: paused;
}

@keyframes float-slow {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-14px); }
}

.float-slow {
  animation: float-slow 6s ease-in-out infinite;
}

/* FAQ accordion */
.faq-icon {
  transition: transform 0.3s var(--ease-out);
}

.faq-item.is-open .faq-icon {
  transform: rotate(45deg);
}

.faq-item .faq-body {
  overflow: hidden;
  transition: max-height 0.35s var(--ease-out);
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--navy-900);
  color: #fff;
  padding: 0.75rem 1.25rem;
  z-index: 100;
  border-radius: 0 0 0.5rem 0;
}

.skip-link:focus {
  left: 0;
}

/* Visible keyboard focus */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible,
summary:focus-visible {
  outline: 2px solid var(--cyan-500);
  outline-offset: 3px;
  border-radius: 4px;
}