/*
  主页专属样式 (home.css)
*/

.page-body {
  margin: 0;
  color: #f3f4f6;
}

/* --- 全屏滚动容器 --- */
.scroll-container {
  height: 100vh;
  overflow-y: scroll;
  scroll-snap-type: y mandatory;
}

/* --- 通用 Section 样式 --- */
.section {
  position: relative;
  height: 100vh;
  width: 100%;
  scroll-snap-align: start;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1rem;
  overflow: hidden;
}
.section__overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: 1;
}
.section__background-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
.section__content {
  position: relative;
  z-index: 2;
  max-width: 48rem;
  margin: 0 auto;
}
.section__title {
  font-size: 2.25rem;
  line-height: 2.5rem;
  font-weight: 700;
  color: #ffffff;
}
.section__description {
  margin-top: 1rem;
  font-size: 1.125rem;
  line-height: 1.75rem;
  color: #d1d5db;
}
.section__button {
  display: inline-block;
  margin-top: 2rem;
  background-color: #dc2626;
  color: #ffffff;
  font-weight: 700;
  padding: 0.75rem 2rem;
  border-radius: 0.5rem;
  text-decoration: none;
  transition: all 0.3s ease;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}
.section__button:hover {
  background-color: #b91c1c;
  transform: scale(1.05);
}

/* --- 顶部 Hero 海报 --- */
.hero {
  position: relative;
  height: 100vh;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 1rem;
  color: #ffffff;
  scroll-snap-align: start;
  overflow: hidden;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.2);
  z-index: 1;
}
.hero__background-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
}
.hero__content {
  position: relative;
  z-index: 2;
}
.hero__title {
  /* 选项 1: 马善政体 (当前) - 风格稳重 */
  font-family: 'Ma Shan Zheng', cursive;

  /* 选项 2: 龙藏体 - 风格洒脱、草书感强 */
  /* font-family: 'Long Cang', cursive; */

  /* 选项 3: 芝麻街体 - 风格随性、手写感强 */
  /* font-family: 'Zhi Mang Xing', cursive; */
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}
@media (min-width: 768px) {
  .hero__title {
    font-size: 4.5rem;
  }
}
.hero__subtitle {
  margin-top: 1rem;
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
  font-size: 1.25rem;
  color: #d1d5db;
  text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}
@media (min-width: 768px) {
  .hero__subtitle {
    font-size: 1.5rem;
  }
}
.hero__nav-buttons {
  margin-top: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}
.hero__nav-button {
  background-color: rgba(220, 38, 38, 0.8);
  backdrop-filter: blur(4px);
  color: #ffffff;
  font-weight: 700;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  text-decoration: none;
  transition: all 0.3s ease;
  transform: scale(1);
}
.hero__nav-button:hover {
  background-color: rgba(239, 68, 68, 0.9);
  transform: scale(1.1);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  filter: brightness(1.1);
}
.hero__favorite-link {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  color: #ffffff;
  z-index: 20;
  transition: transform 0.3s;
}
.hero__favorite-link:hover {
  color: #fecaca;
  transform: scale(1.25);
}
.hero__favorite-icon {
  height: 2rem;
  width: 2rem;
}

/* --- (新增/更新) 右上角操作区 --- */
.hero__actions {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 1.25rem; /* 增大间距 */
}

.hero__favorite-link {
    color: white;
    transition: transform 0.3s, color 0.3s;
}
.hero__favorite-link:hover {
    color: #f87171;
    transform: scale(1.2);
}
.hero__icon {
    height: 2rem;
    width: 2rem;
}

/* 它会复用 common.css 里的 .auth-container, .nav-login-button 等 */
.hero__actions .nav-login-button,
.hero__actions .nav-user-info,
.hero__actions .nav-logout-button {
    color: #ffffff; /* 确保在深色海报上是白色 */
    text-shadow: 0 1px 2px rgba(0,0,0,0.5);
}
.hero__actions .nav-login-button:hover {
    color: #f87171; /* 悬浮时变红 */
}
.hero__actions .nav-logout-button:hover {
    color: #f87171; /* 悬浮时变红 */
}
.hero__actions .nav-login-icon {
    height: 2rem;
    width: 2rem;
}


/* --- 返回顶部按钮 --- */
.back-to-top-button {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background-color: rgba(220, 38, 38, 0.8);
  backdrop-filter: blur(4px);
  color: #ffffff;
  padding: 0.75rem;
  border-radius: 9999px;
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease-in-out;
  transform: translateY(0);
  /* 更新：使用一个非常高的 z-index 确保按钮在最顶层 */
  z-index: 9999; 
}
.back-to-top-button:hover {
  background-color: #b91c1c;
  transform: scale(1.1);
}
.back-to-top-icon {
  height: 1.5rem;
  width: 1.5rem;
}

.hidden {
  opacity: 0;
  pointer-events: none;
  transform: translateY(1rem);
}
/* 用于平滑隐藏的动画 */
.fade-out {
    opacity: 0 !important;
    transform: translateY(1rem) !important;
}