.history-box {
  grid-area: sidebar;
  align-self: stretch;
  display: flex;
  flex-direction: column;
  background: var(--bg-sidebar);
  border: none;
  border-radius: 8px;
  padding: 12px;
  overflow-y: auto;
  width: 400px;
  min-width: 56px;
  max-width: 400px;
  transition: width 0.4s cubic-bezier(0.4, 0, 0.2, 1), max-width 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.history-box.expanded {
  width: 400px;
  max-width: 400px;
}

.history-box:not(.expanded) {
  width: 56px;
  max-width: 56px;
}

.history-box:not(.expanded) .history-toggle {
  font-size: 1.2rem;
  padding: 12px 8px;
  line-height: 1;
}

.history-box h3 {
  flex-shrink: 0;
  margin-top: 0;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border-history);
}

.history-box ul {
  flex: 1;
  list-style: none;
  padding: 0;
  margin: 0;
}

.history-box:not(.expanded) h3,
.history-box:not(.expanded) ul {
  display: none;
}

.history-toggle {
  margin-top: auto;
  padding: 10px 12px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  border: none;
  border-radius: 6px;
  background: var(--btn-secondary);
  color: var(--text-button);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
  flex-shrink: 0;
  width: 100%;
  text-align: center;
}

.history-toggle:hover {
  background: var(--btn-secondary-hover);
  color: var(--text-button-hover);
}

.history-box li {
  padding: 6px;
  border-bottom: 1px solid var(--border-history-item);
  cursor: pointer;
  color: var(--text-primary);
  transition: background 0.2s;
}

.history-box li:hover {
  background: var(--history-hover);
}