/* src/components/Dashboard.css */
.dashboard-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background-color: #f5f5f5;
  }
  
  .top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
  }
  
  .search-container {
    display: flex;
    flex-grow: 1;
    max-width: 600px;
    margin: 0 auto;
  }
  
  .search-input {
    flex-grow: 1;
    padding: 8px 15px;
    border: 1px solid #ddd;
    border-radius: 20px 0 0 20px;
    font-size: 16px;
    outline: none;
  }
  
  .search-button {
    padding: 8px 15px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 0 20px 20px 0;
    cursor: pointer;
    font-size: 16px;
  }
  
  .search-button:hover {
    background-color: #0056b3;
  }
  
  .user-info {
    display: flex;
    align-items: center;
    gap: 10px;
  }
  
  .user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
  }
  
  .username {
    font-weight: bold;
  }
  
  .logout-button {
    padding: 5px 10px;
    background-color: #f8f9fa;
    border: 1px solid #ddd;
    border-radius: 4px;
    cursor: pointer;
    margin-left: 10px;
  }
  
  .logout-button:hover {
    background-color: #e9ecef;
  }
  
  .nav-tabs {
    display: flex;
    background-color: #fff;
    border-bottom: 1px solid #ddd;
    padding: 0 20px;
  }
  
  .tab-button {
    padding: 12px 20px;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    font-size: 16px;
    color: #666;
  }
  
  .tab-button:hover {
    color: #007bff;
  }
  
  .tab-button.active {
    color: #007bff;
    border-bottom-color: #007bff;
    font-weight: bold;
  }
  
  .content-area {
    flex-grow: 1;
    padding: 20px;
    background-color: #fff;
    margin: 20px;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  }
  
  .loading, .error {
    padding: 20px;
    text-align: center;
    font-size: 18px;
  }
  
  .error {
    color: #dc3545;
  }

/* 公告区样式 */
  /* 轮播图样式 */
.carousel-container {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
    margin-bottom: 20px;
    border-radius: 4px;
  }
  
  .carousel-slide {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
  }
  
  .carousel-slide.active {
    opacity: 1;
  }
  
  .carousel-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    color: white;
  }
  
  .gray-bg {
    background-color: #666;
  }
  
  .carousel-dots {
    position: absolute;
    bottom: 15px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: 10px;
  }
  
  .dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
  }
  
  .dot.active {
    background-color: white;
  }
  
  /* 公告网格样式 */
  .announcement-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
  }
  
  .announcement-card {
    background-color: white;
    padding: 15px;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: transform 0.2s, box-shadow 0.2s;
  }
  
  .announcement-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  }
  
  .announcement-card h3 {
    margin-top: 0;
    color: #007bff;
    border-bottom: 1px solid #eee;
    padding-bottom: 8px;
  }
  
  .announcement-card p {
    margin-bottom: 0;
    color: #666;
    line-height: 1.5;
  }
/* 分享区样式   */
 /* 上传头部样式 */
.upload-header {
  margin-bottom: 20px;
  display: flex;
  justify-content: flex-start;
}

.upload-btn {
  padding: 10px 20px;
  background: #1890ff;
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.3s;
}

.upload-btn:hover {
  background: #40a9ff;
}

/* 弹窗样式 */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.upload-modal {
  background: white;
  padding: 25px;
  border-radius: 8px;
  width: 500px;
  max-width: 90%;
  position: relative;
}

.close-btn {
  position: absolute;
  top: 15px;
  right: 15px;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
}

/* 表单样式 */
.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: 500;
}

.form-group input[type="text"],
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 8px;
  border: 1px solid #d9d9d9;
  border-radius: 4px;
}

.form-group textarea {
  min-height: 80px;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  margin-top: 20px;
}

.cancel-btn {
  padding: 8px 15px;
  background: #f5f5f5;
  border: 1px solid #d9d9d9;
  border-radius: 4px;
  cursor: pointer;
}

.cancel-btn:hover {
  background: #e6e6e6;
}
  /* 筛选区域 */
.filter-section {
  background: #f9f9f9;
  padding: 15px;
  border-radius: 8px;
  margin-bottom: 20px;
}

.filter-group {
  margin-bottom: 15px;
}

.filter-group h4 {
  margin: 0 0 8px 0;
  font-size: 15px;
  color: #666;
}

/* 筛选按钮 */
.filter-btn {
  padding: 6px 12px;
  margin-right: 8px;
  margin-bottom: 8px;
  border: 1px solid #ddd;
  background: white;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.2s;
}

.filter-btn:hover {
  border-color: #1890ff;
  color: #1890ff;
}

.filter-btn.active {
  background: #1890ff;
  color: white;
  border-color: #1890ff;
}

/* 确定按钮 */
.confirm-btn {
  padding: 8px 20px;
  background: #1890ff;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: opacity 0.3s;
}

.confirm-btn:hover {
  background: #007bff;
}

.confirm-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}


/* 资源列表 */
.resource-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.resource-item {
  display: flex;
  align-items: center;
  padding: 15px;
  background-color: white;
  border-radius: 4px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s, box-shadow 0.2s;
}

.resource-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.resource-poster {
  margin-right: 15px;
}

.poster-image {
  width: 60px;
  height: 80px;
  background-color: #666;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 24px;
  font-weight: bold;
  border-radius: 4px;
}

.resource-info {
  flex-grow: 1;
}

.resource-title {
  margin: 0 0 5px 0;
  font-size: 16px;
  font-weight: bold;
}

.resource-meta {
  margin: 0;
  font-size: 14px;
  color: #666;
}

.resource-stats {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  margin-right: 20px;
  min-width: 150px;
}

.stat {
  font-size: 13px;
  color: #666;
  margin-bottom: 5px;
}

.download-btn {
  padding: 8px 15px;
  background-color: #28a745;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: background-color 0.2s;
}

.download-btn:hover {
  background-color: #218838;
}
/* 发帖按钮样式 */
.post-header {
  margin-bottom: 20px;
  text-align: right;
}

.create-post-btn {
  background-color: #1890ff;
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  font-size: 14px;
  transition: background-color 0.3s;
}

.create-post-btn:hover {
  background-color: #40a9ff;
}

/* 弹窗样式 */
.post-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.post-modal {
  background-color: white;
  padding: 24px;
  border-radius: 8px;
  width: 500px;
  max-width: 90%;
  position: relative;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.post-modal h3 {
  margin-top: 0;
  margin-bottom: 20px;
  font-size: 18px;
  color: #333;
}

.modal-close-btn {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 20px;
  cursor: pointer;
  color: #999;
}

.modal-close-btn:hover {
  color: #666;
}

/* 表单样式 */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  font-weight: 500;
  color: #333;
}

.form-group input[type="text"],
.form-group textarea {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid #d9d9d9;
  border-radius: 4px;
  font-size: 14px;
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.upload-image-btn {
  display: flex;
  align-items: center;
}

.upload-image-btn label {
  background-color: #f5f5f5;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  border: 1px dashed #d9d9d9;
  margin-right: 10px;
  transition: all 0.3s;
}

.upload-image-btn label:hover {
  border-color: #1890ff;
  color: #1890ff;
}

.image-name {
  font-size: 14px;
  color: #666;
}

/* 按钮样式 */
.form-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 24px;
}

.cancel-btn {
  background-color: #f5f5f5;
  color: #333;
  border: none;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  margin-right: 10px;
  transition: background-color 0.3s;
}

.cancel-btn:hover {
  background-color: #e6e6e6;
}

.submit-btn {
  background-color: #1890ff;
  color: white;
  border: none;
  padding: 8px 16px;
  border-radius: 4px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.submit-btn:hover {
  background-color: #40a9ff;
}

.pagination {
  display: flex;
  justify-content: center;
  margin: 20px 0;
  gap: 5px;
}

.pagination button {
  padding: 5px 10px;
  border: 1px solid #ddd;
  background: white;
  cursor: pointer;
}

.pagination button.active {
  background: #1890ff;
  color: white;
  border-color: #1890ff;
}

.pagination button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.filter-section {
  position: sticky;
  top: 0;
  background: white;
  z-index: 100;
  padding: 15px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}