@import url("https://fonts.googleapis.com/css2?family=Tangerine:wght@700&display=swap");
@import url("https://cdn.jsdelivr.net/gh/lxgw/LxgwWenKai@latest/style.css");

/* 全局 */
body {
  margin: 0;
  font-family: 'LXGW WenKai', 'Playfair Display', serif;
  background: url("Christmas tree.png") center/cover no-repeat fixed;
  overflow-x: hidden;
  color: #5a4a4a;
}

/* 淡粉柔光遮罩 */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background: rgba(255, 245, 248, 0.55);
  backdrop-filter: blur(4px);
  z-index: 0;
}

/* 封面页 */
.cover {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 230, 238, 0.7);
  backdrop-filter: blur(10px);
  z-index: 5;
  transition: opacity 1.5s ease;
}
.cover.hidden {
  opacity: 0;
  pointer-events: none;
}
.cover-content {
  text-align: center;
  animation: float 3s ease-in-out infinite;
}
.cover-content h1 {
  font-family: 'Tangerine', 'LXGW WenKai', cursive;
  font-size: 3.4rem;
  color: #e697ab;
  text-shadow: 0 0 10px rgba(255,182,193,0.5);
}
#enterBtn {
  margin-top: 2rem;
  background: rgba(255,182,193,0.4);
  border: 1px solid rgba(255,182,193,0.8);
  color: #fff;
  font-size: 1.2rem;
  border-radius: 30px;
  padding: 0.8rem 2rem;
  backdrop-filter: blur(5px);
  cursor: pointer;
  transition: all 0.3s ease;
}
#enterBtn:hover {
  background: rgba(255,182,193,0.7);
  transform: scale(1.05);
}
@keyframes float {
  0%,100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* 主内容 */
main {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 3rem 1rem;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 1.5s ease, transform 1.5s ease;
}
main.visible {
  opacity: 1;
  transform: translateY(0);
}

.main-title {
  font-family: 'Tangerine', 'LXGW WenKai', cursive;
  font-size: 3rem;
  color: #e697ab;
  margin-bottom: 2rem;
  letter-spacing: 0.05em;
}

/* 视频 */
.video-wrapper {
  position: relative;
  width: 70%;
  max-width: 500px;
  margin: 2rem auto;
  border-radius: 18px;
  overflow: hidden;
  filter: brightness(1.05) saturate(1.15);
}
.video-wrapper::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(255,192,203,0.25), rgba(255,228,225,0.3));
  mix-blend-mode: soft-light;
  pointer-events: none;
}
video {
  width: 100%;
  border-radius: 18px;
}

/* 打字机 */
.typewriter {
  font-size: 1.1rem;
  color: #7a5f65;
  line-height: 1.8;
  max-width: 320px;
  margin: 0 auto 2rem;
  text-align: left;
}

/* 爱心 */
.heart {
  position: fixed;
  bottom: -20px;
  width: 14px;
  height: 14px;
  background: rgba(255,182,193,0.3);
  transform: rotate(45deg);
  animation: floatUp 10s ease-in infinite;
  opacity: 0.6;
  z-index: 2;
}
.heart::before, .heart::after {
  content: "";
  position: absolute;
  width: 14px;
  height: 14px;
  background: inherit;
  border-radius: 50%;
}
.heart::before { top: -7px; left: 0; }
.heart::after { left: -7px; top: 0; }
@keyframes floatUp {
  0% { transform: translateY(0) rotate(45deg); opacity: 0.6; }
  100% { transform: translateY(-100vh) rotate(45deg); opacity: 0; }
}

/* 页脚 */
footer {
  color: #9c7b83;
  margin-top: 2rem;
  font-style: italic;
}

/* 响应式 */
@media (max-width:768px){
  .main-title { font-size: 2.4rem; }
  .video-wrapper { width: 90%; }
  .typewriter { font-size: 1rem; text-align:center; }
}