* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  overflow: hidden;
  font-family: Arial, Helvetica, sans-serif;
  background: radial-gradient(circle at top, #9fdcff 0%, #5db6e8 55%, #3f93c4 100%);
}

.page {
  width: 100vw;
  height: 100vh;
  position: relative;
  display: grid;
  place-items: center;
}

#game {
  width: min(432px, 100vw);
  height: min(768px, 100vh);
  max-height: 100vh;
  image-rendering: auto;
  border-radius: 18px;
  box-shadow: 0 28px 70px rgba(0, 0, 0, 0.24);
  background: #72c7ed;
}

.info-box,
.highscore-box {
  position: fixed;
  top: 18px;
  z-index: 5;
  max-width: min(340px, calc(100vw - 36px));
  padding: 14px 16px;
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.92);
  color: #1b3142;
  font-size: 15px;
  line-height: 1.35;
  font-weight: 700;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(8px);
}

.info-box {
  right: 18px;
}

.highscore-box {
  left: 18px;
  min-width: 245px;
}

.highscore-box strong {
  display: block;
  margin-bottom: 8px;
}

.highscore-box ol {
  margin: 0;
  padding-left: 22px;
}

.highscore-box li {
  margin: 5px 0;
}

.highscore-score {
  font-weight: 900;
}

.highscore-date {
  display: block;
  margin-top: 1px;
  font-size: 12px;
  font-weight: 600;
  opacity: 0.72;
}

.mobile-help {
  position: fixed;
  left: 50%;
  bottom: 16px;
  transform: translateX(-50%);
  z-index: 5;
  padding: 8px 12px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.72);
  color: #1b3142;
  font-size: 13px;
  font-weight: 700;
  pointer-events: none;
}

@media (max-width: 760px) {
  .info-box,
  .highscore-box {
    top: 10px;
    max-width: 250px;
    font-size: 12px;
    padding: 10px 12px;
  }

  .info-box {
    right: 10px;
  }

  .highscore-box {
    left: 10px;
    min-width: 190px;
  }

  .highscore-box ol {
    padding-left: 18px;
  }

  .mobile-help {
    font-size: 12px;
  }
}