/* 关键 CSS - 仅包含首屏渲染所需的样式 */

/* 基础样式 */
html,
body {
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 0;
  background-color: #333;
  overflow: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
}

*,
a,
p {
  margin: 0;
  padding: 0;
  user-select: none;
  text-decoration: none;
  color: #fff;
  box-sizing: border-box;
}

/* 应用容器 */
#app {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 0;
}

/* 加载动画 */
#loader-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 999;
  overflow: hidden;
}

.loader {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.loader-circle {
  width: 150px;
  height: 150px;
  border-radius: 50%;
  border: 3px solid transparent;
  border-top-color: #fff;
  animation: spin 1.8s linear infinite;
  z-index: 2;
}

.loader-circle:before {
  content: "";
  position: absolute;
  top: 5px;
  left: 5px;
  right: 5px;
  bottom: 5px;
  border-radius: 50%;
  border: 3px solid transparent;
  border-top-color: #a4a4a4;
  animation: spin-reverse 0.6s linear infinite;
}

.loader-circle:after {
  content: "";
  position: absolute;
  top: 15px;
  left: 15px;
  right: 15px;
  bottom: 15px;
  border-radius: 50%;
  border: 3px solid transparent;
  border-top-color: #d3d3d3;
  animation: spin 1s linear infinite;
}

.loader-text {
  display: flex;
  flex-direction: column;
  align-items: center;
  color: #fff;
  z-index: 2;
  margin-top: 40px;
  font-size: 24px;
}

.loader-text .tip {
  margin-top: 6px;
  font-size: 18px;
  opacity: 0.6;
}

.loader-section {
  position: fixed;
  top: 0;
  width: 51%;
  height: 100%;
  background: #333;
  z-index: 1;
}

.loader-section.section-left {
  left: 0;
}

.loader-section.section-right {
  right: 0;
}

#loader-wrapper.loaded {
  visibility: hidden;
  transform: translateY(-100%);
  transition:
    transform 0.3s 1s ease-out,
    visibility 0.3s 1s ease-out;
}

#loader-wrapper.loaded .loader .loader-circle,
#loader-wrapper.loaded .loader .loader-text {
  opacity: 0;
  transition: opacity 0.3s ease-out;
}

#loader-wrapper.loaded .loader-section.section-left {
  transform: translateX(-100%);
  transition: transform 0.5s 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
}

#loader-wrapper.loaded .loader-section.section-right {
  transform: translateX(100%);
  transition: transform 0.5s 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
}

/* 背景样式 */
.cover {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transition: 0.25s;
  z-index: -1;
}

.cover .bg {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  backface-visibility: hidden;
  filter: blur(20px) brightness(0.3);
  transition:
    filter 0.3s,
    transform 0.3s;
}

.cover .gray {
  opacity: 1;
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(rgba(0, 0, 0, 0) 0, rgba(0, 0, 0, 0.5) 100%),
    radial-gradient(rgba(0, 0, 0, 0) 33%, rgba(0, 0, 0, 0.3) 166%);
  transition: 1.5s;
}

/* 骨架屏样式 */
.skeleton-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 0 0.75rem;
  opacity: 1;
  transition: opacity 0.5s ease;
  z-index: 1;
}

.skeleton-container.loaded {
  opacity: 0;
  pointer-events: none;
  z-index: -1;
}

.skeleton-left, .skeleton-right {
  height: 80vh;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  padding: 20px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  animation: pulse 1.5s infinite;
}

.skeleton-left {
  width: 300px;
  margin-right: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
}

/* 动画 */
@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes spin-reverse {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(-360deg);
  }
}

@keyframes pulse {
  0% {
    opacity: 0.6;
  }
  50% {
    opacity: 0.8;
  }
  100% {
    opacity: 0.6;
  }
}

/* 过渡动画 */
.fade-enter-active,
.fade-leave-active {
  transition: opacity 0.3s ease-in-out;
}

.fade-enter-from,
.fade-leave-to {
  opacity: 0;
}

/* 响应式布局 */
@media (max-width: 768px) {
  .skeleton-container {
    flex-direction: column;
  }
  
  .skeleton-left, .skeleton-right {
    width: 100%;
    height: auto;
    margin: 0 0 20px 0;
  }
}