:root {
  color-scheme: light;
  --canvas: #faf9f7;
  --navy: #172536;
  --muted-blue: #5f7182;
  --accent: #4b91c8;
  --footer: #f1f2f3;
  --border: #cbd5dc;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  display: flex;
  min-height: 100vh;
  flex-direction: column;
  background: var(--canvas);
  color: var(--navy);
  font-family: Arial, Helvetica, sans-serif;
}

.page-shell {
  display: grid;
  flex: 1;
  place-items: center;
  padding: 5rem 1.5rem;
}

.welcome {
  width: min(100%, 42rem);
  text-align: center;
}

.eyebrow {
  margin: 0 0 1.5rem;
  color: var(--muted-blue);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  color: var(--navy);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3.25rem, 9vw, 5.75rem);
  font-weight: 400;
  letter-spacing: -0.045em;
  line-height: 1.05;
}

.accent-rule {
  width: 2rem;
  height: 2px;
  margin: 1.5rem auto 1rem;
  background: var(--accent);
}

.message {
  margin: 0 auto 2rem;
  color: var(--muted-blue);
  font-size: 1rem;
  line-height: 1.7;
}

.greeting-button {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.75rem 1.25rem;
  background: transparent;
  color: var(--navy);
  cursor: pointer;
  font: inherit;
  font-size: 0.9rem;
  transition: background-color 160ms ease, border-color 160ms ease,
    transform 160ms ease;
}

.greeting-button:hover {
  border-color: var(--accent);
  background: #f0f6fa;
}

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

.greeting-button:focus-visible {
  outline: 3px solid rgb(75 145 200 / 35%);
  outline-offset: 4px;
}

.site-footer {
  padding: 1.25rem 1.5rem;
  background: var(--footer);
  color: var(--muted-blue);
  text-align: center;
}

.site-footer p {
  margin: 0;
  font-size: 0.7rem;
}

@media (max-width: 30rem) {
  .page-shell {
    padding: 3rem 1.25rem;
  }

  .eyebrow {
    margin-bottom: 1.25rem;
    font-size: 0.65rem;
  }

  h1 {
    font-size: clamp(2.8rem, 14vw, 4rem);
  }

  .accent-rule {
    margin-top: 1.25rem;
  }

  .message {
    margin-bottom: 1.75rem;
    font-size: 0.95rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .greeting-button {
    transition: none;
  }
}