:root {
  --bg: #0f172a;
  --card: rgba(255, 255, 255, 0.09);
  --card-border: rgba(255, 255, 255, 0.16);
  --text: #f8fafc;
  --muted: #cbd5e1;
  --accent: #38bdf8;
  --accent-strong: #0ea5e9;
  --shadow: rgba(2, 6, 23, 0.45);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(56, 189, 248, 0.32), transparent 34rem),
    radial-gradient(circle at bottom right, rgba(14, 165, 233, 0.28), transparent 32rem),
    var(--bg);
}

.page-shell {
  min-height: calc(100vh - 72px);
  display: grid;
  place-items: center;
  padding: 48px 20px 24px;
}

.hero-card {
  width: min(100%, 760px);
  padding: clamp(28px, 6vw, 64px);
  border: 1px solid var(--card-border);
  border-radius: 32px;
  background: var(--card);
  box-shadow: 0 32px 80px var(--shadow);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 56px;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.brand-mark {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border-radius: 14px;
  color: #082f49;
  background: linear-gradient(135deg, #e0f2fe, var(--accent));
  font-weight: 800;
}

.eyebrow {
  margin: 0 0 16px;
  color: var(--accent);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.78rem;
}

h1 {
  max-width: 680px;
  margin: 0;
  font-size: clamp(2.5rem, 8vw, 5.7rem);
  line-height: 0.95;
  letter-spacing: -0.075em;
}

.intro {
  max-width: 590px;
  margin: 28px 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  line-height: 1.7;
}

.notify-form {
  margin-top: 40px;
}

.notify-form label {
  display: block;
  margin-bottom: 10px;
  font-weight: 700;
}

.form-row {
  display: flex;
  gap: 12px;
}

input,
button {
  min-height: 54px;
  border: 0;
  border-radius: 999px;
  font: inherit;
}

input {
  width: 100%;
  padding: 0 20px;
  color: var(--text);
  background: rgba(15, 23, 42, 0.68);
  outline: 1px solid rgba(255, 255, 255, 0.14);
}

input::placeholder {
  color: #94a3b8;
}

button {
  padding: 0 26px;
  white-space: nowrap;
  color: white;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  font-weight: 800;
  cursor: pointer;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 30px rgba(14, 165, 233, 0.32);
}

.form-note {
  margin: 12px 0 0;
  color: #a8b7ca;
  font-size: 0.9rem;
}

code {
  color: #e0f2fe;
}

.details {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
  margin-top: 44px;
  padding-top: 28px;
  border-top: 1px solid rgba(255, 255, 255, 0.14);
}

.details div {
  display: grid;
  gap: 6px;
}

.details strong {
  color: white;
  font-size: 0.86rem;
}

.details span,
.details a {
  color: var(--muted);
  text-decoration: none;
}

.details a:hover {
  color: white;
}

footer {
  min-height: 72px;
  display: grid;
  place-items: center;
  padding: 0 20px 24px;
  color: #94a3b8;
  text-align: center;
}

footer p {
  margin: 0;
}

@media (max-width: 680px) {
  .brand {
    margin-bottom: 40px;
  }

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

  .form-row {
    display: grid;
  }

  button {
    width: 100%;
  }

  .hero-card {
    border-radius: 24px;
  }
}