@import url("https://fonts.googleapis.com/css2?family=ZCOOL+KuaiLe&family=Permanent+Marker&display=swap");

:root {
  --paper-color: #fcfcf7;
  --c-red: #ff3b30;
  --c-blue: #007aff;
  --c-yellow: #ffcc00;
  --c-orange: #ff9500;
  --c-gray: #8e8e93;
}

body,
html {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background-color: var(--paper-color);
  background-image:
    radial-gradient(#d0d0d0 1px, transparent 0),
    radial-gradient(#d0d0d0 1px, transparent 0);
  background-size: 20px 20px;
  background-position:
    0 0,
    10px 10px;
  font-family: "ZCOOL KuaiLe", cursive;
  cursor: crosshair;
  touch-action: none;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* --- 核心修复：蜡笔滤镜 + iOS 防抖动 --- */
.crayon-effect {
  filter: url("#crayon-texture");
  /* 开启硬件加速，防止 iOS 上因重绘导致的抖动 */
  -webkit-transform: translate3d(0, 0, 0);
  transform: translate3d(0, 0, 0);
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  /* 确保图层独立 */
  will-change: transform;
}

.container {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 10;
  padding-bottom: 60px;
}

/* 巨大的中文标题 */
.big-text {
  font-size: 22vw;
  line-height: 0.85;
  color: var(--c-red);
  text-shadow: 4px 4px 0 rgba(0, 0, 0, 0.1);
  position: relative;
  z-index: 1;
}

@media (min-width: 800px) and (min-aspect-ratio: 1/1) {
  .big-text {
    font-size: 35vh;
  }
}

/* 2026 贴纸 */
.year-sticker {
  font-family: "Permanent Marker", cursive;
  font-size: clamp(2rem, 6vw, 4rem);
  color: white;
  background-color: var(--c-blue);
  padding: 5px 30px;
  border-radius: 255px 15px 225px 15px / 15px 225px 15px 255px;
  /* 移除 float 动画的 transform，改用 margin 动画，避免触发父级重绘 */
  transform: rotate(-6deg);
  z-index: 2;
  margin: -20px 0;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  animation: sticker-float 3s ease-in-out infinite;
}

/* 优化后的浮动动画：只动 translateY，不动 rotate，减少抖动源 */
@keyframes sticker-float {
  0%,
  100% {
    transform: rotate(-6deg) translateY(0);
  }
  50% {
    transform: rotate(-6deg) translateY(-8px);
  }
}

/* 底部英文 */
.footer-en {
  margin-top: 2vh;
  font-family: "Permanent Marker", cursive;
  font-size: clamp(1rem, 4vw, 1.5rem);
  color: var(--c-orange);
  letter-spacing: 2px;
  transform: rotate(2deg);
}

/* 交互提示语 */
.hint-text {
  margin-top: 2vh;
  font-size: 0.8rem;
  color: var(--c-gray);
  opacity: 0.7;
  animation: blink 2s infinite;
}

/* --- 底部固定区域 --- */
.footer-fixed {
  position: fixed;
  bottom: 10px;
  left: 0;
  width: 100%;
  text-align: center;
  z-index: 20;
  pointer-events: none;
}

.signature {
  font-family: "Permanent Marker", cursive;
  font-size: 0.7rem;
  color: var(--c-gray);
  opacity: 0.6;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

/* 浏览量样式 */
.visit-count {
  font-family: "ZCOOL KuaiLe", cursive; /* 改用中文适配字体 */
  font-size: 0.7rem;
  color: var(--c-gray);
  opacity: 0.5;
}

/* 烟花容器 */
#firework-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 5;
  pointer-events: none;
}

.particle {
  position: absolute;
  border-radius: 50%;
  width: 10px;
  height: 10px;
}

@keyframes blink {
  0%,
  100% {
    opacity: 0.3;
  }
  50% {
    opacity: 1;
  }
}