/* 基础重置与响应式设计 */
:root {
  --primary: #e50914;
  --primary-dark: #c10812;
  --dark: #141414;
  --light: #f8f9fa;
  --gray: #333;
  --light-gray: #e6e6e6;
  --text: #fff;
  --text-secondary: #b3b3b3;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', 'Roboto', sans-serif;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--dark);
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.3s ease;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

/* 头部样式 - 响应式导航 */
header {
  background-color: rgba(0, 0, 0, 0.9);

  z-index: 1000;
  padding: 15px 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.header-content {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;

}

.logo {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo i {
  font-size: 1.5rem;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.5rem;
  cursor: pointer;
}
.topnav {
    width: 100%;
    overflow: hidden;
    display: block;
    box-shadow: 0 1px 1px 0 rgba(0, 0, 0, .05);
    padding: 10px 0;
}

.topnav a {
    width: 9.2%;
    float: left;
    border-radius: 4px;
    line-height: 35px;
    height: 35px;
    text-align: center;
    font-size: 16px;
    display: inline-block;
    background-color:rgb(128 128 128 / 65%);
    color: var(--text);
    margin: 3px;
    transition-duration: .3s;
    margin-bottom: 5px;
}
.topnav a:hover, 
.topnav a.active {
  background-color: var(--primary);
  color: var(--text);
}

.search-form {
  display: flex;
  flex: 1;
  max-width: 500px;
  min-width: 200px;
}

.search-form input {
  padding: 10px 15px;
  border: none;
  border-radius: 4px 0 0 4px;
  width: 100%;
  font-size: 1rem;
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--text);
  transition: background 0.3s;
}

.search-form input:focus {
  background-color: rgba(255, 255, 255, 0.2);
  outline: none;
}

.search-form button {
  padding: 10px 15px;
  background-color: var(--primary);
  color: var(--text);
  border: none;
  border-radius: 0 4px 4px 0;
  cursor: pointer;
  transition: background-color 0.3s;
}

.search-form button:hover {
  background-color: var(--primary-dark);
}

/* 主内容区 */
main {
  padding: 30px 0;
  min-height: 70vh;
}

.page-title {
  margin-bottom: 25px;
  font-weight: 600;
  padding-bottom: 15px;
  border-bottom: 2px solid var(--primary);
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.8rem;
}

.page-title i {
  color: var(--primary);
}

/* 视频网格 - 响应式布局 */
.video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 25px;
  margin-bottom: 30px;
}

.video-item {
  background-color: rgba(30, 30, 30, 0.8);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  position: relative;
}

.video-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
}

.video-thumbnail {
  position: relative;
  width: 100%;
  padding-top: 56.25%; /* 16:9比例 */
  overflow: hidden;
  background: linear-gradient(135deg, #2c3e50, #1a1a1a);
}

.video-thumbnail img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.video-item:hover .video-thumbnail img {
  transform: scale(1.05);
}

.video-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background-color: rgba(0, 0, 0, 0.7);
  color: var(--text);
  font-size: 0.8rem;
  padding: 3px 8px;
  border-radius: 3px;
  font-weight: 500;
}

.video-info {
  padding: 15px;
}

.video-title {
  font-size: 1rem;
  margin-bottom: 5px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  height: 2.8em;
  line-height: 1.4;
}

.video-title a:hover {
  color: var(--primary);
}

/* 分页样式 */
.pagination-container {
  margin: 40px 0;
  text-align: center;
}

.pagination {
  display: inline-block;
}

.pagination ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: inline-flex;
  gap: 6px;
}

.pagination-link {
  display: inline-block;
  padding: 10px 16px;
  background-color: rgba(30, 30, 30, 0.8);
  color: var(--text);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 4px;
  transition: all 0.2s ease;
  font-size: 1rem;
}

.pagination-link:hover:not(.current):not(.disabled) {
  background-color: var(--primary);
  border-color: var(--primary);
}

.pagination-link.current {
  background-color: var(--primary);
  color: var(--text);
  border-color: var(--primary);
  font-weight: bold;
}

.pagination-link.disabled {
  color: #666;
  background-color: rgba(30, 30, 30, 0.4);
  border-color: rgba(255, 255, 255, 0.05);
  cursor: not-allowed;
}

.pagination-ellipsis {
  display: inline-block;
  padding: 10px 12px;
  color: var(--text-secondary);
  font-size: 1rem;
}

/* 空状态样式 */
.empty-state {
  text-align: center;
  padding: 60px 0;
  background-color: rgba(30, 30, 30, 0.5);
  border-radius: 8px;
  margin: 30px 0;
}

.empty-state-icon {
  font-size: 3.5rem;
  color: var(--primary);
  margin-bottom: 20px;
}

.empty-state-text {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* 视频播放页 */
.video-player-container {
  margin-bottom: 40px;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.video-player {
  background: #000;
  position: relative;
  padding-top: 56.25%; /* 16:9 aspect ratio */
}

.video-player video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  outline: none;
}

.video-info-panel {
  padding: 20px;
  background-color: rgba(30, 30, 30, 0.8);
  border-radius: 0 0 8px 8px;
}

.video-info-panel p {
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.video-info-panel strong {
  color: var(--primary);
}

/* 相关推荐 */
.related-videos {
  margin-top: 40px;
}

.related-videos h3 {
  font-size: 1.5rem;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 20px;
}

.related-item {
  border-radius: 6px;
  overflow: hidden;
  background-color: rgba(30, 30, 30, 0.8);
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s;
}

.related-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
}

.related-thumbnail {
  position: relative;
  padding-top: 56.25%;
  background: linear-gradient(135deg, #2c3e50, #1a1a1a);
}

.related-thumbnail img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.related-duration {
  position: absolute;
  bottom: 8px;
  right: 8px;
  background-color: rgba(0, 0, 0, 0.7);
  color: var(--text);
  font-size: 0.8rem;
  padding: 3px 8px;
  border-radius: 3px;
  font-weight: 500;
}

.related-info {
  padding: 12px;
}

.related-title {
  font-size: 0.9rem;
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  height: 2.8em;
}

/* 搜索页样式 */
.search-results-count {
  margin-bottom: 25px;
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.highlight {
  color: var(--primary);
  font-weight: bold;
}

/* 标签云 */
.tags-container {
  margin: 10px 0;
}

.tags-title {
  font-size: 1.5rem;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.tags-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(86px, 1fr));
  gap: 6px;
}

.tag-item {
  padding: 5px;
  background-color: rgba(30, 30, 30, 0.8);
  border-radius: 4px;
  text-align: center;
  font-size: 0.9rem;
  transition: all 0.3s ease;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.tag-item:hover {
  background-color: var(--primary);
  transform: translateY(-3px);
  box-shadow: 0 4px 10px rgba(229, 9, 20, 0.3);
}

/* 页脚 */
footer {
  background-color: rgba(0, 0, 0, 0.9);
  padding: 40px 0 20px;
  margin-top: 50px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  margin-bottom: 30px;
}

.footer-section h3 {
  font-size: 1.2rem;
  margin-bottom: 20px;
  color: var(--primary);
  position: relative;
  padding-bottom: 10px;
}

.footer-section h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--primary);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a:hover {
  color: var(--primary);
  padding-left: 5px;
}

.footer-copyright {
  text-align: center;
  padding-top: 20px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* 懒加载样式 */
.lazy-img {
  opacity: 0;
  transition: opacity 0.5s ease;
}

.lazy-img.loaded {
  opacity: 1;
}

/* 响应式调整 */
@media (max-width: 992px) {
  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
  }
  
  .related-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }
}

@media (max-width: 768px) {
  .mobile-toggle {
    display: block;
  }
  .logo{
      font-size: 1.4rem;
  }
    .topnav a {
        width: 23.1%;

    }
  
  .header-content {
    flex-direction: column;
    align-items: stretch;
  }
  
  .search-form {
    max-width: 100%;
  }
  
  .video-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 15px;
  }
  
  .related-grid {
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 15px;
  }
  
  .tags-grid {
    grid-template-columns: repeat(auto-fill, minmax(59px, 1fr));
  }
  
  .page-title {
    font-size: 1.5rem;
  }
}

@media (max-width: 480px) {
  .video-grid {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  
  .related-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .video-info, .related-info {
    padding: 10px;
  }
  
  .video-title, .related-title {
    font-size: 0.85rem;
  }
  
  .pagination-link {
    padding: 8px 12px;
    font-size: 0.9rem;
  }
}