*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Nunito', sans-serif; background: #70c5ce; color: #fff;
  min-height: 100dvh; display: flex; flex-direction: column;
  overflow: hidden;
}
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.6rem 1rem; background: linear-gradient(135deg, #ff6b35, #e85d2a);
  color: #fff; font-family: 'Nunito', sans-serif;
}
.btn-back {
  color: #fff; text-decoration: none; font-weight: 700; font-size: 1rem;
  padding: 0.3rem 0.7rem; border-radius: 8px; background: rgba(255,255,255,0.15);
}
.game-title { font-size: 1.25rem; font-weight: 800; }
.stats { font-weight: 700; }

.game-container {
  flex: 1; display: flex; flex-direction: column; align-items: center;
  justify-content: center; position: relative;
}

#game-canvas {
  width: min(400px, 100vw);
  height: auto;
  display: block;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}

.start-msg {
  position: absolute;
  bottom: 20%;
  font-size: 1.1rem; font-weight: 700;
  color: #fff; text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
  pointer-events: none;
}
.start-msg.hidden { display: none; }

/* ===== RESPONSIVIDADE MOBILE ===== */
@media (max-width: 480px) {
  #game-canvas { width: 100vw; max-width: 100vw; }
  .start-msg { font-size: 0.95rem; bottom: 15%; }
  .topbar { padding: 0.4rem 0.8rem; }
  .game-title { font-size: 1rem; }
}

/* ===== SEO GAME INFO SECTION ===== */
body:has(.game-info) { overflow-y: auto; height: auto; min-height: 100dvh; }
.game-info {
  max-width: 780px;
  margin: 1rem auto;
  padding: 1rem 1.2rem;
  background: rgba(0,0,0,0.15);
  border-radius: 12px;
  color: rgba(255,255,255,0.85);
  font-size: 0.88rem;
  line-height: 1.6;
}
.game-info h2 { font-size: 1.1rem; font-weight: 800; margin-bottom: 0.5rem; }
.game-info h3 { font-size: 0.95rem; font-weight: 700; margin: 0.8rem 0 0.3rem; }
.game-info ul { padding-left: 1.2rem; }
.game-info li { margin-bottom: 0.2rem; }