:root {
  --ink: #07253e;
  --hud-bg: #ff7a7ad8;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

body {
  font-family: "Trebuchet MS", "Verdana", sans-serif;
  background: linear-gradient(180deg, #96d9ff, #d8f3ff);
  color: var(--ink);
}

#game-root {
  position: relative;
  width: 100%;
  height: 100%;
}

#game {
  width: 100%;
  height: 100%;
  display: block;
}

.hud {
  position: fixed;
  top: 12px;
  left: 12px;
  right: 12px;
  max-width: 920px;
  padding: 10px 14px;
  border-radius: 12px;
  background: var(--hud-bg);
  border: 2px solid #1f5a85;
  box-shadow: 0 10px 24px #0730502b;
}

.hud h1 {
  margin: 0 0 6px;
  font-size: clamp(1rem, 1.9vw, 1.4rem);
}

.help,
.status,
.score {
  margin: 3px 0;
  font-size: clamp(0.82rem, 1.45vw, 1rem);
}

.difficulty-ui {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 4px 0;
  font-size: clamp(0.82rem, 1.45vw, 1rem);
}

.difficulty-ui select {
  border: 1px solid #1f5a85;
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  padding: 4px 8px;
  font: inherit;
}

.game-info {
  position: fixed;
  right: 14px;
  bottom: 14px;
  width: min(360px, calc(100vw - 28px));
  border: 2px solid #1f5a85;
  border-radius: 12px;
  padding: 12px;
  background: rgba(255, 255, 255, 0.92);
  box-shadow: 0 12px 28px #07305036;
}

.game-info img {
  width: 100%;
  aspect-ratio: 16 / 9;
  display: block;
  border-radius: 8px;
  object-fit: cover;
  margin-bottom: 10px;
}

.game-info h2 {
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.game-info p {
  margin: 5px 0;
  line-height: 1.55;
  font-size: 0.9rem;
}

.game-info a {
  display: inline-flex;
  margin-top: 6px;
  color: #0b5f93;
  font-weight: 800;
  text-decoration: none;
}

@media (max-width: 720px) {
  .game-info {
    display: none;
  }
}