:root {
  color-scheme: dark;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  background: #08111f;
  color: #f8fafc;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
}

.page-shell {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 24px;
  background:
    radial-gradient(circle at 20% 20%, rgb(37 99 235 / 28%), transparent 34%),
    radial-gradient(circle at 80% 75%, rgb(14 165 233 / 22%), transparent 32%),
    #08111f;
}

.hello-card {
  width: min(100%, 720px);
  padding: clamp(40px, 8vw, 84px);
  text-align: center;
  border: 1px solid rgb(148 163 184 / 20%);
  border-radius: 28px;
  background: rgb(15 23 42 / 82%);
  box-shadow: 0 30px 80px rgb(0 0 0 / 35%);
  backdrop-filter: blur(16px);
}

.eyebrow {
  margin: 0 0 18px;
  color: #7dd3fc;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.18em;
}

h1,
.message {
  width: fit-content;
  margin-inline: auto;
  cursor: pointer;
  transition:
    color 180ms ease,
    transform 180ms ease;
}

h1 {
  margin-top: 0;
  margin-bottom: 14px;
  font-size: clamp(3rem, 10vw, 6.5rem);
  line-height: 0.94;
  letter-spacing: -0.07em;
}

.message {
  margin-top: 0;
  margin-bottom: 30px;
  color: #cbd5e1;
  font-size: clamp(1.2rem, 4vw, 2rem);
}

h1:hover,
h1:focus-visible,
.message:hover,
.message:focus-visible {
  transform: translateY(-3px);
  outline: none;
}

h1.is-active {
  color: #fb7185;
}

.message.is-active {
  color: #38bdf8;
}

.hint {
  margin: 0;
  color: #64748b;
  font-size: 0.92rem;
}

@media (prefers-reduced-motion: reduce) {
  h1,
  .message {
    transition: none;
  }
}