:root {
  --bg: #11161d;
  --panel: rgba(18, 22, 30, 0.72);
  --text: #f2f4f8;
  --muted: #a8b0be;
  --warn: #ffbd2e;
  --ok: #3ed598;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: radial-gradient(circle at 20% 20%, #1f2835, var(--bg) 60%);
  color: var(--text);
  font-family: "Trebuchet MS", "Verdana", sans-serif;
}

#app {
  width: 100%;
  height: 100%;
  touch-action: none;
}

#menu {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: grid;
  place-items: center;
  pointer-events: none;
}

#menu button {
  pointer-events: auto;
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 12px;
  padding: 14px 26px;
  color: var(--text);
  background: rgba(18, 22, 30, 0.9);
  font-size: 18px;
  font-weight: 700;
  cursor: pointer;
}

#hud {
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 10;
  width: min(92vw, 360px);
  padding: 12px 14px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 12px;
  background: var(--panel);
  backdrop-filter: blur(6px);
}

.title {
  font-weight: 700;
  font-size: 16px;
  margin-bottom: 6px;
}

#status {
  color: var(--ok);
  margin-bottom: 4px;
  min-height: 20px;
}

#score {
  font-weight: 700;
}

#timer {
  margin-top: 2px;
  font-weight: 700;
  color: #ffd27a;
}

.hint {
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
}