:root {
  color-scheme: light;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #15803d;
  color: #ffffff;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  min-height: 100svh;
  margin: 0;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

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

h1 {
  margin: 0 0 1rem;
  font-size: clamp(2rem, 8vw, 4.5rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

#weekday {
  margin: 0 0 2rem;
  font-size: clamp(1.125rem, 3vw, 1.5rem);
  font-weight: 600;
}

button {
  min-height: 3rem;
  padding: 0.75rem 1.5rem;
  border: 0;
  border-radius: 0.75rem;
  background: #ffffff;
  color: #166534;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: background-color 160ms ease, transform 160ms ease;
}

button:hover {
  background: #dcfce7;
  transform: translateY(-2px);
}

button:focus-visible {
  outline: 3px solid #111827;
  outline-offset: 4px;
}

button:active {
  transform: translateY(0);
}

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