:root {
  color-scheme: dark;
  --ocean-900: #041629;
  --ocean-700: #0b3a6b;
  --ocean-500: #0f7ac7;
  --foam: #7fd4ff;
  --glass: rgba(10, 46, 82, 0.55);
  --glass-border: rgba(180, 232, 255, 0.35);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", "Segoe UI", Arial, sans-serif;
  color: #e6f7ff;
  background:
    radial-gradient(circle at 20% 10%, rgba(64, 171, 255, 0.45), transparent 45%),
    radial-gradient(circle at 75% 25%, rgba(90, 206, 255, 0.28), transparent 40%),
    linear-gradient(165deg, var(--ocean-900), var(--ocean-700) 50%, #03213d);
  display: grid;
  place-items: center;
  overflow: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: -20%;
  background: linear-gradient(
    120deg,
    transparent 25%,
    rgba(255, 255, 255, 0.08) 40%,
    transparent 55%
  );
  transform: translateX(-35%) rotate(7deg);
  animation: shimmer 12s linear infinite;
  pointer-events: none;
}

.ocean-shell {
  width: min(92vw, 960px);
  padding: 2rem;
}

.glass-card {
  position: relative;
  border-radius: 24px;
  padding: clamp(2rem, 4vw, 3.5rem);
  background: linear-gradient(145deg, rgba(20, 98, 158, 0.48), var(--glass));
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(16px) saturate(150%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.18),
    0 18px 45px rgba(1, 12, 24, 0.42),
    0 0 0 1px rgba(159, 224, 255, 0.08);
}

.glass-card::after {
  content: "";
  position: absolute;
  inset: 10px;
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.07);
  pointer-events: none;
}

.eyebrow {
  margin: 0;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--foam);
  font-size: 0.72rem;
}

h1 {
  margin: 0.8rem 0 1rem;
  font-size: clamp(1.8rem, 5vw, 3rem);
  line-height: 1.08;
  text-wrap: balance;
}

.subtitle {
  margin: 0;
  max-width: 58ch;
  color: rgba(230, 247, 255, 0.9);
  line-height: 1.55;
}

.actions {
  margin-top: 2rem;
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
}

.button {
  text-decoration: none;
  font-weight: 600;
  border-radius: 999px;
  padding: 0.78rem 1.2rem;
  border: 1px solid transparent;
  transition: transform 180ms ease, box-shadow 180ms ease, background-color 180ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.primary {
  color: #03203a;
  background: linear-gradient(145deg, #a4e5ff, #5ac4ff);
  box-shadow: 0 10px 22px rgba(90, 196, 255, 0.38);
}

.secondary {
  color: #def3ff;
  background: rgba(7, 52, 91, 0.65);
  border-color: rgba(160, 221, 255, 0.28);
}

@keyframes shimmer {
  from {
    transform: translateX(-35%) rotate(7deg);
  }
  to {
    transform: translateX(35%) rotate(7deg);
  }
}

@media (max-width: 640px) {
  .ocean-shell {
    padding: 1.2rem;
  }

  .actions {
    flex-direction: column;
  }

  .button {
    text-align: center;
  }
}