/* 页面样式：构建居中的可爱按钮舞台以及点击后的上浮文字。 */
:root {
  color-scheme: light;
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: #fff1d8;
  color: #9a5f4d;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
}

body {
  overflow: hidden;
  background:
    radial-gradient(circle at 20% 18%, rgb(255 255 255 / 42%) 0 5%, transparent 13%),
    radial-gradient(circle at 80% 75%, rgb(255 221 233 / 48%) 0 6%, transparent 16%),
    #fff1d8;
}

button {
  font: inherit;
}

.page-shell {
  display: grid;
  min-height: 100dvh;
  place-items: center;
  padding: clamp(20px, 5vw, 64px);
}

.button-stage {
  position: relative;
  display: grid;
  width: min(82vw, 620px);
  place-items: center;
}

.hint {
  position: absolute;
  top: -2.5rem;
  margin: 0;
  color: #b97d68;
  font-size: clamp(0.9rem, 2.4vw, 1.05rem);
  letter-spacing: 0.14em;
  opacity: 0.78;
  animation: hint-breathe 2.2s ease-in-out infinite;
}

.miss-button {
  position: relative;
  z-index: 2;
  display: block;
  width: 100%;
  padding: 0;
  border: 0;
  border-radius: 44%;
  background: transparent;
  cursor: pointer;
  outline: none;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  transition: filter 160ms ease, transform 100ms ease;
}

.miss-button img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 7%;
  user-select: none;
}

.miss-button:hover {
  filter: drop-shadow(0 14px 18px rgb(164 105 79 / 16%));
  transform: translateY(-3px);
}

.miss-button:active,
.miss-button.is-pressed {
  transform: translateY(2px) scale(0.965);
}

.miss-button:focus-visible {
  box-shadow: 0 0 0 5px #fff1d8, 0 0 0 9px #c98773;
}

.float-layer {
  position: absolute;
  z-index: 3;
  inset: 0;
  overflow: visible;
  pointer-events: none;
}

.floating-message {
  position: absolute;
  bottom: 62%;
  left: 50%;
  width: max-content;
  max-width: 90vw;
  padding: 0.52em 0.9em;
  border: 1px solid rgb(255 255 255 / 76%);
  border-radius: 999px;
  background: rgb(255 248 238 / 88%);
  box-shadow: 0 8px 24px rgb(172 104 78 / 12%);
  color: #a65f50;
  font-size: clamp(1rem, 3.5vw, 1.35rem);
  font-weight: 650;
  letter-spacing: 0.04em;
  transform: translate(-50%, 0);
  animation: float-away 1.65s ease-out forwards;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@keyframes float-away {
  0% {
    opacity: 0;
    transform: translate(-50%, 12px) scale(0.94) rotate(var(--tilt));
  }
  14% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate(-50%, -150px) scale(1.04) rotate(var(--tilt));
  }
}

@keyframes hint-breathe {
  0%, 100% {
    opacity: 0.58;
    transform: translateY(0);
  }
  50% {
    opacity: 0.9;
    transform: translateY(-4px);
  }
}

@media (max-height: 620px) {
  .button-stage {
    width: min(70vh, 82vw);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hint,
  .floating-message {
    animation-duration: 1ms;
    animation-iteration-count: 1;
  }

  .miss-button {
    transition: none;
  }
}