:root {
  --bg: #040f20;
  --bg-soft: #0a1f3a;
  --card: rgba(11, 26, 50, 0.58);
  --text: #f2f7ff;
  --muted: #b7c8dd;
  --accent: #50e3c2;
  --accent-2: #31b7ff;
  --stroke: rgba(255, 255, 255, 0.18);
  --shadow: 0 20px 48px rgba(0, 0, 0, 0.28);
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  color: var(--text);
  font-family: "Manrope", "Segoe UI", sans-serif;
  background: #040f20;
  scroll-behavior: smooth;
}

a {
  color: inherit;
  text-decoration: none;
}

.hero-backdrop {
  position: fixed;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transform: scale(1.1);
  opacity: 0;
  transition: opacity 1.4s ease;
  filter: saturate(1.1) contrast(1.05);
}

.hero-slide.is-active {
  opacity: 1;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(2, 10, 20, 0.14), rgba(4, 8, 18, 0.68) 58%),
    radial-gradient(circle at 76% 12%, rgba(80, 227, 194, 0.25), transparent 48%),
    radial-gradient(circle at 18% 80%, rgba(49, 183, 255, 0.2), transparent 46%);
}

.topbar,
main,
.footer {
  position: relative;
  z-index: 1;
}

.topbar {
  width: min(var(--max), calc(100% - 2rem));
  margin: 1rem auto 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 1rem;
  border-radius: 999px;
  border: 1px solid var(--stroke);
  backdrop-filter: blur(12px);
  background: rgba(5, 18, 36, 0.52);
  position: sticky;
  top: 0.75rem;
  z-index: 30;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: "Space Grotesk", sans-serif;
  font-weight: 700;
}

.brand-mark {
  width: 2rem;
  aspect-ratio: 1;
  border-radius: 0.6rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: linear-gradient(135deg, rgba(80, 227, 194, 0.45), rgba(49, 183, 255, 0.35));
}

.brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.menu-links {
  display: flex;
  gap: 1.2rem;
  color: var(--muted);
  font-weight: 600;
}

.menu-links a {
  transition: color 0.2s ease;
}

.menu-links a:hover {
  color: var(--text);
}

.menu-toggle {
  display: none;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--stroke);
  padding: 0.45rem 0.8rem;
  border-radius: 999px;
}

.section {
  width: min(var(--max), calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  min-height: 82vh;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: end;
  gap: 2rem;
  padding-top: 6.5rem;
  padding-bottom: 3rem;
}

.hero-inner {
  max-width: 45rem;
}

.eyebrow {
  font-family: "Space Grotesk", sans-serif;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.8rem;
  color: var(--accent);
  margin-bottom: 0.8rem;
}

.headline {
  margin: 0;
  font-size: clamp(2rem, 4.8vw, 4.2rem);
  line-height: 1.05;
  text-wrap: balance;
}

.subhead {
  margin-top: 1rem;
  max-width: 39rem;
  color: var(--muted);
  font-size: clamp(1rem, 1.7vw, 1.2rem);
  line-height: 1.65;
}

.hero-actions {
  margin-top: 1.6rem;
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.btn {
  border: 1px solid var(--stroke);
  border-radius: 999px;
  padding: 0.75rem 1.2rem;
  font-weight: 700;
  font-family: "Space Grotesk", sans-serif;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.btn-primary {
  color: #052036;
  background: linear-gradient(135deg, var(--accent), #7ef6df);
  border-color: transparent;
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.06);
}

.hero-cards {
  display: grid;
  gap: 0.8rem;
  margin-bottom: 0.8rem;
}

.glass-card {
  border: 1px solid var(--stroke);
  background: var(--card);
  box-shadow: var(--shadow);
  backdrop-filter: blur(14px);
  border-radius: 1rem;
  padding: 1rem;
  transform-origin: center;
}

.glass-card h3 {
  margin: 0;
  font-size: 1rem;
  font-family: "Space Grotesk", sans-serif;
}

.glass-card p {
  margin: 0.55rem 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

.float-a { animation: bob 5s ease-in-out infinite; }
.float-b { animation: bob 5.8s ease-in-out infinite; }
.float-c { animation: bob 6.2s ease-in-out infinite; }

@keyframes bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

.value-strip {
  margin-top: 1rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
}

.value-card {
  border: 1px solid var(--stroke);
  border-radius: 1rem;
  padding: 1rem;
  background: rgba(4, 18, 34, 0.65);
  backdrop-filter: blur(10px);
}

.value-card h3 {
  margin: 0;
  font-size: 1.04rem;
  font-family: "Space Grotesk", sans-serif;
}

.value-card p {
  margin: 0.55rem 0 0;
  color: var(--muted);
  line-height: 1.6;
  font-size: 0.94rem;
}

.value-cta {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  padding-top: 0.2rem;
}

.features,
.gallery,
.download {
  padding: 4.4rem 0 1rem;
}

.section-header h2 {
  margin: 0.3rem 0 0;
  font-size: clamp(1.6rem, 3vw, 2.5rem);
}

.feature-grid {
  margin-top: 1.2rem;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
}

.feature {
  border: 1px solid var(--stroke);
  background: rgba(8, 24, 46, 0.66);
  border-radius: 1rem;
  padding: 1.1rem;
  backdrop-filter: blur(12px);
  min-height: 9.5rem;
}

.feature h3 {
  margin: 0;
  font-size: 1.04rem;
  font-family: "Space Grotesk", sans-serif;
}

.feature p {
  margin: 0.7rem 0 0;
  color: var(--muted);
  line-height: 1.6;
  font-size: 0.94rem;
}

.gallery-grid {
  margin-top: 1.2rem;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.35rem;
  align-items: start;
}

.tile {
  margin: 0;
  border-radius: 1rem;
  overflow: hidden;
  border: 0;
  background: transparent;
  box-shadow: none;
  height: clamp(170px, 20vw, 270px);
  min-height: 0;
  padding: 0;
}

.tile img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center top;
  border-radius: 1rem;
  border: 0;
  background: transparent;
  box-shadow: none;
  transition: transform 0.5s ease;
}

.tile:hover img {
  transform: scale(1.02);
}

.download-card {
  border: 1px solid var(--stroke);
  border-radius: 1.2rem;
  padding: 1.4rem;
  background:
    linear-gradient(135deg, rgba(80, 227, 194, 0.12), rgba(49, 183, 255, 0.11)),
    rgba(5, 16, 31, 0.75);
  backdrop-filter: blur(10px);
}

.download-card p {
  color: var(--muted);
  line-height: 1.7;
}

.download-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.btn[aria-disabled="true"] {
  opacity: 0.7;
  pointer-events: none;
}

.footer {
  margin: 4.2rem auto 1.4rem;
  width: min(var(--max), calc(100% - 2rem));
  border-top: 1px solid rgba(255, 255, 255, 0.14);
  padding-top: 1.1rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
}

.footer p {
  margin: 0.45rem 0 0;
  color: var(--muted);
  max-width: 34rem;
}

.footer nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: flex-start;
}

.footer nav a {
  color: var(--muted);
}

.footer nav a:hover {
  color: var(--text);
}

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: transform 0.7s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.7s ease;
}

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

@media (max-width: 1040px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 5.8rem;
  }

  .hero-cards {
    max-width: 44rem;
  }

  .feature-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .value-strip {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .gallery-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .topbar {
    border-radius: 1rem;
    align-items: flex-start;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .menu-links {
    position: absolute;
    top: calc(100% + 0.55rem);
    left: 0;
    right: 0;
    padding: 0.9rem 1rem;
    border-radius: 1rem;
    background: rgba(5, 18, 36, 0.94);
    border: 1px solid var(--stroke);
    backdrop-filter: blur(12px);
    flex-direction: column;
    transform: scaleY(0);
    transform-origin: top;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
  }

  .menu-links.open {
    transform: scaleY(1);
    opacity: 1;
    pointer-events: auto;
  }

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

  .value-strip {
    grid-template-columns: 1fr;
  }

  .gallery-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.3rem;
  }

  .footer {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .hero-slide,
  .tile img,
  .btn,
  .float-a,
  .float-b,
  .float-c {
    transition: none !important;
    animation: none !important;
  }
}