/* To Research */
.research-item {
  display: flex;
  gap: 12px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}

.research-item.done {
  opacity: 0.45;
}

.research-item.done .research-text {
  text-decoration: line-through;
}

.research-check {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-radius: 4px;
  flex-shrink: 0;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: 2px;
  transition: all 0.15s;
}

.research-check:hover {
  border-color: var(--accent);
}

.research-check.checked {
  background: var(--accent);
  border-color: var(--accent);
}

.research-check.checked::after {
  content: '\2713';
  color: white;
  font-size: 13px;
}

.research-text {
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.55;
  color: var(--text);
  flex: 1;
}

.research-source {
  font-family: var(--sans);
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

.research-add {
  display: flex;
  gap: 8px;
  margin-top: 24px;
  align-items: flex-start;
}

.research-add-input {
  font-family: var(--serif);
  font-size: 16px;
  line-height: 1.55;
  flex: 1;
  border: 1px dashed var(--border);
  border-radius: 4px;
  padding: 10px 14px;
  color: var(--text);
  background: transparent;
  outline: none;
  resize: none;
  min-height: 44px;
}

.research-add-input:focus {
  border-color: var(--accent);
  border-style: solid;
}

.research-divider {
  font-size: 12px;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin: 32px 0 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}