/* 全局样式 */
body {
  font-family: 'Roboto', 'Helvetica Neue', 'Microsoft YaHei', Arial, sans-serif;
  background-color: #f8f9fa;
}

.container {
  max-width: 1200px;
}

/* 赞助者卡片样式 */
.sponsor-card {
  transition: all 0.3s ease;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.sponsor-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.sponsor-avatar {
  width: 100px;
  height: 100px;
  border: 4px solid #fff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.sponsor-avatar-lg {
  width: 120px;
  height: 120px;
  border: 4px solid #fff;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.avatar-sm {
  width: 40px;
  height: 40px;
}

/* 管理员表格样式 */
.table thead th {
  background-color: #f8f9fa;
  border-bottom: 2px solid #dee2e6;
}

.sponsor-list tr {
  cursor: pointer;
}

.sponsor-list tr.table-primary {
  cursor: move;
}

/* 背景图片预览样式 */
.bg-preview {
  max-height: 300px;
  border: 1px solid #ddd;
  border-radius: 4px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  margin-bottom: 15px;
}

.sponsors-container {
  position: relative;
  z-index: 1;
}

/* 响应式调整 */
@media (max-width: 768px) {
  .sponsor-avatar {
    width: 80px;
    height: 80px;
  }

  .sponsor-avatar-lg {
    width: 100px;
    height: 100px;
  }

  .btn-group .btn {
    padding: 0.25rem 0.5rem;
  }
}