* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background: #1a1a2e;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  height: 100vh;
  overflow: hidden;
  font-family: 'Segoe UI', system-ui, sans-serif;
  user-select: none;
}

#game-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 8px;
  box-sizing: border-box;
}

#canvas-container {
  /* Scale canvas to fit viewport: width-constrained or height-constrained */
  width: min(100vw - 16px, calc((100vh - 100px) * (800 / 450)));
}

#env-bar {
  display: flex;
  gap: 8px;
  background: rgba(0,0,0,0.4);
  padding: 8px 14px;
  border-radius: 30px;
  border: 1px solid rgba(255,255,255,0.15);
  flex-wrap: wrap;
  justify-content: center;
}

#env-bar span {
  color: rgba(255,255,255,0.6);
  font-size: 13px;
  line-height: 32px;
  margin-right: 4px;
  letter-spacing: 0.5px;
}

.env-btn {
  padding: 6px 18px;
  border: 2px solid rgba(255,255,255,0.25);
  border-radius: 20px;
  background: transparent;
  color: rgba(255,255,255,0.7);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  letter-spacing: 0.3px;
}

.env-btn:hover {
  border-color: rgba(255,255,255,0.6);
  color: #fff;
  background: rgba(255,255,255,0.1);
}

.env-btn.active {
  border-color: #FFD700;
  color: #FFD700;
  background: rgba(255,215,0,0.12);
}

#gameCanvas {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6), 0 0 0 2px rgba(255,255,255,0.08);
  cursor: pointer;
}

#hint {
  color: rgba(255,255,255,0.45);
  font-size: 12px;
  letter-spacing: 0.5px;
}

/* Landscape phones: reduce gaps and env-bar to save vertical space */
@media (max-height: 500px) and (orientation: landscape) {
  #game-wrapper {
    gap: 6px;
    padding: 4px;
  }

  #canvas-container {
    width: min(100vw - 16px, calc((100vh - 72px) * (800 / 450)));
  }

  #env-bar {
    padding: 4px 10px;
    gap: 5px;
  }

  .env-btn {
    padding: 3px 12px;
    font-size: 11px;
  }

  #env-bar span {
    font-size: 11px;
    line-height: 26px;
  }

  #hint {
    font-size: 10px;
  }
}