:root {
  --color-bg: #f7f8fa;
  --color-surface: #ffffff;
  --color-border: #d9dee5;
  --color-text: #1f2933;
  --color-muted: #64707d;
  --color-accent: #008998;
  --color-accent-dark: #007380;
  --color-accent-soft: #e6f4f6;
  --color-danger: #b42318;
  --color-success-bg: #edf8ed;
  --color-success-text: #247235;
  --radius: 8px;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--color-bg);
  color: var(--color-text);
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  min-height: 36px;
}

.app-shell {
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 28px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.topbar h1 {
  margin: 0;
  font-size: 24px;
  line-height: 1.25;
  letter-spacing: 0;
}

.topbar p {
  margin: 4px 0 0;
  color: var(--color-muted);
  font-size: 13px;
}

.signin-error {
  max-width: 340px;
  margin: 0;
  color: var(--color-danger);
  font-size: 13px;
  line-height: 1.5;
}

.tabs {
  display: flex;
  gap: 28px;
  padding: 0 28px;
  overflow-x: auto;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.tabs button {
  position: relative;
  border: 0;
  background: transparent;
  color: var(--color-muted);
  padding: 15px 2px 16px;
  white-space: nowrap;
  cursor: pointer;
  font-weight: 600;
}

.tabs button::after {
  position: absolute;
  right: 0;
  bottom: -1px;
  left: 0;
  height: 3px;
  background: transparent;
  content: "";
}

.tabs button:hover,
.tabs button.is-active {
  color: var(--color-accent);
}

.tabs button.is-active::after {
  background: var(--color-accent);
}

.view {
  margin: 24px 28px 32px;
  padding: 24px;
  min-height: 460px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.view h2 {
  margin: 0 0 18px;
  font-size: 20px;
  line-height: 1.35;
  letter-spacing: 0;
}

.view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.view-header h2 {
  margin: 0;
}

.action-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.view button {
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  border-radius: 6px;
  padding: 8px 13px;
  cursor: pointer;
  font-weight: 600;
}

.view button:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.view button.primary-action {
  border-color: var(--color-accent);
  background: var(--color-accent);
  color: #ffffff;
}

.view button.primary-action:hover {
  border-color: var(--color-accent-dark);
  background: var(--color-accent-dark);
  color: #ffffff;
}

.empty-state {
  margin: 0;
  color: var(--color-muted);
  line-height: 1.7;
}

.error-text {
  color: var(--color-danger);
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin-bottom: 28px;
}

.metric-card {
  display: grid;
  min-height: 118px;
  align-content: start;
  gap: 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 18px 20px;
  background: var(--color-surface);
}

.metric-card span {
  color: var(--color-text);
  font-size: 14px;
  font-weight: 700;
}

.metric-card strong {
  color: var(--color-text);
  font-size: 36px;
  font-weight: 500;
  line-height: 1.1;
  overflow-wrap: anywhere;
}

.metric-card small {
  color: var(--color-muted);
  font-size: 13px;
  line-height: 1.4;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 10px;
}

.section-header h3 {
  margin: 0;
  font-size: 18px;
  line-height: 1.35;
}

.category-tabs {
  display: flex;
  gap: 8px;
  margin: 0 0 18px;
  overflow-x: auto;
  padding-bottom: 2px;
}

.category-tab {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: max-content;
}

.category-tab span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  min-height: 22px;
  border-radius: 999px;
  padding: 2px 7px;
  background: #edf1f4;
  color: var(--color-muted);
  font-size: 12px;
}

.category-tab.is-active {
  border-color: var(--color-accent);
  background: var(--color-accent-soft);
  color: var(--color-accent-dark);
}

.category-tab.is-active span {
  background: #ffffff;
  color: var(--color-accent-dark);
}

.property-list-header {
  margin-top: 4px;
}

.table-wrap {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.data-table {
  width: 100%;
  min-width: 760px;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th,
.data-table td {
  border-bottom: 1px solid var(--color-border);
  padding: 12px 14px;
  text-align: left;
  vertical-align: middle;
}

.data-table tr:last-child td {
  border-bottom: 0;
}

.data-table tr[draggable="true"] {
  cursor: grab;
}

.data-table tr.is-dragging {
  opacity: .55;
}

.data-table th {
  color: var(--color-muted);
  background: #fbfcfd;
  font-size: 12px;
  font-weight: 700;
}

.property-table {
  min-width: 980px;
}

.property-table th:nth-child(2),
.property-table td:nth-child(2),
.property-table th:nth-child(6),
.property-table td:nth-child(6) {
  white-space: nowrap;
}

.property-table th:nth-child(5),
.property-table td:nth-child(5) {
  min-width: 420px;
}

.reorder-cell {
  width: 122px;
  white-space: nowrap;
}

.drag-handle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  margin-right: 6px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-muted);
  font-weight: 700;
  letter-spacing: -2px;
}

.row-move-actions {
  display: inline-flex;
  gap: 4px;
  vertical-align: middle;
}

.view .row-move-actions button {
  min-width: 30px;
  min-height: 30px;
  padding: 4px 7px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 28px;
  padding: 4px 10px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  color: var(--color-muted);
  background: #fbfcfd;
  font-size: 13px;
  font-weight: 600;
  white-space: nowrap;
}

.status-badge.is-active {
  border-color: #c8e8ca;
  color: var(--color-success-text);
  background: var(--color-success-bg);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 16px;
}

.form-grid label,
.form-section {
  display: grid;
  gap: 6px;
}

.form-grid label.wide,
.form-section,
.form-actions,
.form-error {
  grid-column: 1 / -1;
}

.form-grid span,
.form-section h3 {
  margin: 0;
  color: var(--color-muted);
  font-size: 12px;
  font-weight: 700;
}

.form-grid input,
.form-grid select,
.form-grid textarea,
.detail-row input {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 9px 10px;
  background: #ffffff;
  color: var(--color-text);
}

.form-grid textarea {
  min-height: 96px;
  resize: vertical;
}

.form-section {
  margin-top: 6px;
  padding-top: 8px;
  border-top: 1px solid var(--color-border);
}

.detail-row {
  display: grid;
  grid-template-columns: 220px minmax(0, 1fr);
  gap: 8px;
  margin-bottom: 8px;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.form-error {
  margin: 0;
  color: var(--color-danger);
  line-height: 1.6;
}

.view button.danger {
  border-color: #f1b8b2;
  color: var(--color-danger);
}

.view button.danger:hover {
  border-color: var(--color-danger);
  color: var(--color-danger);
}

.result-box {
  margin-top: 16px;
  min-height: 120px;
  max-height: 360px;
  overflow: auto;
  border-radius: var(--radius);
  padding: 12px;
  background: #101820;
  color: #e7edf4;
  font-size: 12px;
  line-height: 1.5;
  white-space: pre-wrap;
}

.action-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

@media (max-width: 960px) {
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 720px) {
  .topbar {
    align-items: flex-start;
    flex-direction: column;
    padding: 16px;
  }

  .topbar h1 {
    font-size: 21px;
  }

  .tabs {
    gap: 20px;
    padding: 0 16px;
  }

  .view {
    margin: 16px;
    padding: 16px;
  }

  .view-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .metric-grid {
    grid-template-columns: 1fr;
  }

  .metric-card {
    min-height: auto;
  }

  .form-grid,
  .detail-row {
    grid-template-columns: 1fr;
  }
}