/* The page is a frame around the terminal, and nothing more.
 *
 * --surmise-bg is set from the theme at run time: bubbletea emits the palette's
 * background as OSC 11, and boot.js turns that into this variable. So switching
 * theme in the picker recolours the letterboxing as well as the board, and the
 * page never disagrees with the game inside it. The value below is "ember
 * dark", the default palette, so the first paint is already right. */
:root {
  --surmise-bg: #14100e;
  --surmise-fg: #e8ded5;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  height: 100%;
  background: var(--surmise-bg);
  color: var(--surmise-fg);
  font-family: ui-monospace, "JetBrains Mono", "SF Mono", Menlo, Consolas, monospace;
  /* The terminal owns scrolling. The page must never have its own. */
  overflow: hidden;
}

#terminal {
  height: 100%;
  width: 100%;
  padding: 8px;
}

/* xterm draws its own background; let the page's show through so the two are
 * one colour rather than two that nearly match. */
.xterm .xterm-viewport {
  background-color: transparent !important;
}

.overlay {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  background: var(--surmise-bg);
  z-index: 10;
}

.overlay[hidden] {
  display: none;
}

.art {
  margin: 0;
  font-size: clamp(1.5rem, 6vw, 3rem);
  font-weight: 700;
  letter-spacing: 0.2em;
}

.hint {
  margin: 0;
  opacity: 0.7;
}

button {
  font: inherit;
  color: inherit;
  background: transparent;
  border: 1px solid currentColor;
  border-radius: 6px;
  padding: 0.5rem 1.25rem;
  cursor: pointer;
}

button:hover {
  opacity: 0.8;
}