.area-page {
  flex: 1;
  padding: 10px 12px 18px;
  background: #eef3f8;
}

.area-card {
  min-height: calc(100vh - 118px);
  padding: 0 22px 36px;
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 1px 8px rgba(28, 82, 142, 0.08);
}

.area-header {
  height: 70px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.area-header h1 {
  margin: 0;
  padding-top: 2px;
  color: #111827;
  font-size: 16px;
  font-weight: 700;
}

.add-root-button {
  min-width: 114px;
  height: 32px;
  margin-top: 18px;
  margin-right: 28px;
  border: 1px solid #3c93e8;
  border-radius: 4px;
  color: #fff;
  background: #3c93e8;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.area-search {
  width: 206px;
  height: 22px;
  display: grid;
  grid-template-columns: 1fr 26px;
  margin-bottom: 32px;
  border: 1px solid #c8d1dc;
  background: #fff;
}

.area-search input {
  min-width: 0;
  height: 20px;
  padding: 0 8px;
  border: 0;
  color: #1f2d3d;
  outline: 0;
  font-size: 12px;
}

.area-search button {
  position: relative;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.area-search button::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 4px;
  width: 10px;
  height: 10px;
  border: 1.5px solid #52657a;
  border-radius: 50%;
}

.area-search button::after {
  content: "";
  position: absolute;
  left: 17px;
  top: 15px;
  width: 7px;
  height: 1.5px;
  background: #52657a;
  transform: rotate(45deg);
  transform-origin: left center;
}

.area-tree-panel {
  min-height: 468px;
  border: 1px solid #d8dce2;
  background: #fff;
  overflow: auto;
}

.area-tree {
  min-width: 520px;
  padding: 10px 14px;
}

.area-node {
  position: relative;
  min-height: 34px;
}

.area-node-content {
  height: 34px;
  display: grid;
  grid-template-columns: 18px 20px 120px 78px 52px 52px;
  align-items: center;
  column-gap: 0;
  color: #23364d;
  font-size: 14px;
}

.area-node.level-1 > .area-node-content {
  font-weight: 700;
}

.area-node.level-2 > .area-node-content {
  margin-left: 38px;
}

.area-node.level-3 > .area-node-content {
  margin-left: 76px;
}

.area-toggle {
  width: 16px;
  height: 16px;
  border: 0;
  background: transparent;
  cursor: pointer;
  position: relative;
}

.area-toggle::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 5px;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 6px solid #435363;
}

.area-node.collapsed > .area-node-content .area-toggle::before {
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  border-left: 6px solid #435363;
  border-right: 0;
}

.area-node.no-children > .area-node-content .area-toggle::before {
  display: none;
}

.area-file-icon,
.area-folder-icon {
  width: 14px;
  height: 14px;
  position: relative;
  display: inline-block;
  color: #52657a;
}

.area-folder-icon {
  border: 1.4px solid currentColor;
  border-radius: 1px;
}

.area-folder-icon::before {
  content: "";
  position: absolute;
  left: 1px;
  top: -5px;
  width: 7px;
  height: 5px;
  border: 1.4px solid currentColor;
  border-bottom: 0;
  border-radius: 1px 1px 0 0;
}

.area-file-icon {
  border: 1.4px solid currentColor;
  border-radius: 2px;
}

.area-file-icon::before {
  content: "";
  position: absolute;
  right: -1px;
  top: -1px;
  width: 5px;
  height: 5px;
  border-left: 1.4px solid currentColor;
  border-bottom: 1.4px solid currentColor;
  background: #fff;
}

.area-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.area-action {
  border: 0;
  color: #1685ff;
  background: transparent;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  text-align: left;
}

.area-action:disabled {
  color: #fff;
  background: #dedede;
  border-radius: 3px;
  padding: 2px 9px;
  cursor: not-allowed;
}

.area-children {
  display: block;
}

.area-node.collapsed > .area-children {
  display: none;
}

.area-empty {
  padding: 40px;
  color: #8a9ab0;
  text-align: center;
  font-size: 13px;
}

.area-modal-panel {
  width: 646px;
  min-height: 474px;
  border-radius: 4px;
}

.area-modal-header {
  height: 64px;
}

.area-modal-header h3 {
  font-size: 16px;
}

.area-form {
  display: grid;
  gap: 18px;
  padding: 18px 152px 84px;
}

.area-row {
  display: grid;
  grid-template-columns: 74px 1fr;
  align-items: center;
  gap: 12px;
  color: #111827;
  font-size: 14px;
  font-weight: 700;
}

.area-row > span {
  text-align: right;
}

.area-row.required > span::before {
  content: "*";
  margin-right: 8px;
  color: #f15a5a;
  font-weight: 400;
}

.area-row input,
.area-row select {
  width: 100%;
  height: 34px;
  min-width: 0;
  padding: 0 10px;
  border: 1px solid #cbd2dc;
  color: #1f2d3d;
  background: #fff;
  outline: 0;
  font: inherit;
}

.area-row input:focus,
.area-row select:focus {
  border-color: #2f80ed;
  box-shadow: 0 0 0 2px rgba(47, 128, 237, 0.08);
}

.area-modal-actions {
  position: absolute;
  right: 30px;
  bottom: 22px;
  display: flex;
  gap: 32px;
}

.area-modal-actions .ghost-button,
.area-modal-actions .primary-button {
  min-width: 58px;
  height: 24px;
}

@media (max-width: 1280px) {
  .area-node-content {
    grid-template-columns: 18px 20px 112px 78px 52px 52px;
  }
}

/* Area management UI refinement */
.area-page {
  padding: 20px;
  background: transparent;
}

.area-card {
  min-height: calc(100vh - 122px);
  padding: 24px 28px 34px;
  border: 1px solid #dde8f7;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.94);
  box-shadow: 0 16px 40px rgba(34, 69, 126, 0.08);
}

.area-header {
  height: 48px;
  align-items: center;
}

.area-header h1 {
  padding-top: 0;
  color: #15243d;
  font-size: 18px;
  font-weight: 800;
}

.add-root-button {
  min-width: 126px;
  height: 34px;
  margin: 0;
  border-color: #2f73ff;
  border-radius: 18px;
  background: #2f73ff;
  box-shadow: 0 8px 18px rgba(47, 115, 255, 0.18);
}

.area-search {
  width: 256px;
  height: 36px;
  grid-template-columns: 1fr 38px;
  margin: 6px 0 24px;
  border-color: #d8e5f5;
  border-radius: 18px;
  background: #fbfdff;
  overflow: hidden;
}

.area-search input {
  height: 34px;
  padding: 0 14px;
  background: transparent;
  font-size: 13px;
}

.area-search input::placeholder {
  color: #9bacbe;
}

.area-search button::before {
  left: 10px;
  top: 9px;
  border-color: #8091a8;
}

.area-search button::after {
  left: 21px;
  top: 20px;
  background: #8091a8;
}

.area-tree-panel {
  min-height: 560px;
  border: 1px solid #dce8f7;
  border-radius: 14px;
  background: #fff;
  box-shadow: inset 0 0 0 1px rgba(245, 249, 254, 0.84);
  overflow: auto;
}

.area-tree {
  min-width: 920px;
  padding: 24px 12px 34px;
}

.area-node {
  min-height: 40px;
}

.area-node-content {
  position: relative;
  height: 40px;
  display: grid;
  grid-template-columns: 18px 20px 278px 88px 68px 68px minmax(220px, 1fr);
  align-items: center;
  gap: 8px;
  padding: 0 12px;
  border-radius: 0;
  color: #243850;
  font-size: 14px;
  cursor: default;
}

.area-node.level-1 > .area-node-content {
  font-weight: 800;
}

.area-node.level-2 > .area-node-content {
  margin-left: 36px;
}

.area-node.level-3 > .area-node-content {
  margin-left: 72px;
}

.area-node.level-4 > .area-node-content {
  margin-left: 108px;
}

.area-node.level-5 > .area-node-content {
  margin-left: 144px;
}

.area-node-content::before {
  content: "";
  position: absolute;
  left: -18px;
  top: 19px;
  width: 18px;
  height: 1px;
  background: #d7e4f4;
}

.area-node.level-1 > .area-node-content::before {
  display: none;
}

.area-node-content:hover {
  background: #f6faff;
}

.area-node-content.active {
  color: #1774ff;
  background: #e9f3ff;
  box-shadow: inset 4px 0 0 #2f73ff, 0 0 0 1px #dbeaff;
}

.area-node-content.disabled {
  color: #9aaabd;
  background: #f4f6f9;
}

.area-node-content.disabled .area-file-icon,
.area-node-content.disabled .area-folder-icon,
.area-node-content.disabled .area-toggle {
  color: #a7b5c7;
}

.area-children {
  position: relative;
  display: block;
}

.area-children::before {
  content: "";
  position: absolute;
  left: 45px;
  top: 0;
  bottom: 18px;
  width: 1px;
  background: #d7e4f4;
}

.area-node.level-2 > .area-children::before {
  left: 81px;
}

.area-node.level-3 > .area-children::before {
  left: 117px;
}

.area-node.level-4 > .area-children::before {
  left: 153px;
}

.area-toggle {
  color: #6f85a1;
}

.area-toggle::before {
  left: 5px;
  top: 5px;
  border-left-width: 4px;
  border-right-width: 4px;
  border-top-color: currentColor;
}

.area-node.collapsed > .area-node-content .area-toggle::before {
  border-left-color: currentColor;
}

.area-folder-icon,
.area-file-icon {
  color: #7390b3;
}

.area-node-content.active .area-folder-icon,
.area-node-content.active .area-file-icon,
.area-node-content.active .area-toggle {
  color: #1774ff;
}

.area-folder-icon {
  border-radius: 3px;
}

.area-file-icon {
  border-radius: 3px;
}

.area-file-icon::before {
  background: #fff;
}

.area-name {
  min-width: 0;
}

.area-action {
  width: max-content;
  min-width: 58px;
  height: 26px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 0 12px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 800;
  line-height: 1;
  text-align: center;
}

.area-action::before {
  font-size: 13px;
  font-weight: 800;
}

.area-action.add-child {
  min-width: 82px;
  color: #2f73ff;
  border-color: #cfe0ff;
  background: #eff6ff;
}

.area-action.add-child::before {
  content: "+";
}

.area-action.edit {
  color: #48617f;
  border-color: #d8e3f1;
  background: #f5f8fc;
}

.area-action.edit::before {
  content: "✎";
}

.area-action.delete {
  color: #e5484d;
  border-color: #ffd7d9;
  background: #fff3f3;
}

.area-action.delete::before {
  content: "⌫";
}

.area-action:hover {
  transform: translateY(-1px);
}

.area-action.add-child:hover {
  background: #e6f1ff;
}

.area-action.edit:hover {
  color: #2f73ff;
  background: #edf5ff;
}

.area-action.delete:hover {
  background: #ffecec;
}

.area-disabled-tip {
  grid-column: 4 / 8;
  display: inline-flex;
  align-items: center;
  gap: 34px;
  color: #8fa0b4;
  font-size: 13px;
  font-weight: 700;
}

.area-disabled-tip:empty {
  display: none;
}

.area-disabled-badge {
  min-width: 32px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  color: #8b9bad;
  background: #e7edf5;
  font-size: 12px;
}

.area-empty {
  padding: 56px;
  color: #8fa0b4;
}

@media (max-width: 1280px) {
  .area-tree {
    min-width: 820px;
  }

  .area-node-content {
    grid-template-columns: 18px 20px 230px 84px 64px 64px minmax(180px, 1fr);
  }
}