.research-filter-form {
  margin-bottom: 2em;
  padding: 1em;
  background: #f5f5f5;
  border-radius: 4px;
}

.research-filter-form .form-item {
  display: inline-block;
  margin-right: 1em;
}

.research-filter-form label {
  margin-right: 0.5em;
}

.research-filter-form input[type="text"] {
  padding: 0.5em;
  border: 1px solid #ddd;
  border-radius: 4px;
  line-height: 1.5;
}

.research-filter-form button {
  padding: 0.5em 1em;
  background: #0E4128;
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  height: 41px;
}

.research-filter-form button:hover {
  background: #006937;
}

/* year heading */
.year-group {
  margin-bottom: 2em;
}

.year-heading {
  font-size: 1.5em;
  color: #323232;
  border-bottom: 2px solid #e1e4e6;
  padding-bottom: 0.5em;
  margin-bottom: 1em;
}

.year-group .content {
  margin-bottom: 1em;
  padding-left: 1em;
}

/* Research output list */
.more-info {
  margin-top: 0.5em;
  margin-left: 1em;
}

.more-info a {
  text-decoration: none;
  font-size: 0.9em;
}

.more-info a:hover {
  text-decoration: underline;
}

/* No results */
.no-results {
  text-align: center;
  padding: 2em;
  background: #f5f5f5;
  border-radius: 4px;
  margin: 2em 0;
  color: #666;
  font-size: 1.1em;
}

@media screen and (max-width: 768px) {
  .research-filter-form {
    display: flex;
    flex-direction: column;
  }

  .research-filter-form .form-item,
  .research-filter-form button {
    margin-right: 0;
    margin-bottom: 1em;
  }

  .research-filter-form .form-item input[type="text"] {
    width: 100%;
  }
  
}