body {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  margin: 0;
  padding: 0;
  background: #fff;
  color: #171717;
  font-family: Arial, Helvetica, sans-serif;
}
@media (prefers-color-scheme: dark) {
  body {
    background: #0a0a0a;
    color: #ededed;
  }
}
img.day-img {
  display: none;
  max-width: 100%;
  height: 100vh;
  width: 100vw;
  object-fit: contain;
  box-shadow: 0 2px 16px rgba(0,0,0,0.08);
}