:root {
  color-scheme: light dark;
  --admin-bg: #f4f6f8;
  --admin-surface: #ffffff;
  --admin-surface-soft: #f8fafc;
  --admin-surface-hover: #eef2f6;
  --admin-text: #171a1f;
  --admin-muted: #66707f;
  --admin-border: #d9dee7;
  --admin-border-strong: #c3cad5;
  --admin-action: #15191f;
  --admin-action-text: #ffffff;
  --admin-focus: #8b95a5;
  --admin-success: #16794c;
  --admin-success-bg: #e8f8ef;
  --admin-warning: #9a5a00;
  --admin-warning-bg: #fff6df;
  --admin-error: #b42318;
  --admin-error-bg: #fff0ee;
  --admin-shadow: 0 1px 2px rgba(17, 24, 39, 0.06), 0 10px 28px rgba(17, 24, 39, 0.04);
}

@media (prefers-color-scheme: dark) {
  :root {
    --admin-bg: #14171d;
    --admin-surface: #1d2129;
    --admin-surface-soft: #232832;
    --admin-surface-hover: #2a303b;
    --admin-text: #f5f7fa;
    --admin-muted: #a7b0be;
    --admin-border: #39414e;
    --admin-border-strong: #4b5564;
    --admin-action: #f5f7fa;
    --admin-action-text: #15191f;
    --admin-focus: #c5ccd6;
    --admin-success: #75d99f;
    --admin-success-bg: #173523;
    --admin-warning: #f3c66b;
    --admin-warning-bg: #3a2d12;
    --admin-error: #ff9b91;
    --admin-error-bg: #3a1816;
    --admin-shadow: none;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--admin-bg);
  color: var(--admin-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  letter-spacing: 0;
}

button,
input,
select {
  font: inherit;
}

button {
  min-height: 40px;
  border: 0;
  border-radius: 8px;
  padding: 0 16px;
  background: var(--admin-action);
  color: var(--admin-action-text);
  font-weight: 750;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, transform 0.15s ease;
}

button.secondary {
  border: 1px solid var(--admin-border);
  background: var(--admin-surface);
  color: var(--admin-text);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.48;
}

button:not(:disabled):hover {
  transform: translateY(-1px);
}

button.secondary:not(:disabled):hover,
.nav-parent:not(:disabled):hover,
.nav-child:not(.active):hover {
  background: var(--admin-surface-hover);
}

button:focus-visible,
input:focus-visible,
select:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--admin-focus) 32%, transparent);
  outline-offset: 2px;
}

.admin-shell {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  padding: 22px 18px;
  border-right: 1px solid var(--admin-border);
  background: var(--admin-surface);
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 48px;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  background: var(--admin-action);
  color: var(--admin-action-text);
  font-weight: 850;
}

.brand strong,
.brand span,
.nav-parent span,
.nav-parent strong,
.nav-parent small {
  display: block;
}

.brand span,
.nav-title,
.nav-parent small,
.eyebrow,
.page-heading span,
.summary-strip span,
.metric-card span,
.content-card p,
.task-list span,
.state-card span,
.diff-heading span,
.form-section-title span,
.empty-state p {
  color: var(--admin-muted);
  font-size: 13px;
}

.accordion-nav {
  display: grid;
  gap: 14px;
  align-content: start;
}

.nav-title {
  font-weight: 800;
}

.nav-section {
  display: grid;
  gap: 6px;
}

.nav-parent {
  width: 100%;
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 12px;
  border: 1px solid var(--admin-border-strong);
  background: var(--admin-surface-soft);
  color: var(--admin-text);
  text-align: left;
}

.nav-parent b {
  transition: transform 0.16s ease;
}

.nav-parent[aria-expanded="false"] b {
  transform: rotate(-90deg);
}

.nav-section.disabled .nav-parent {
  opacity: 0.55;
}

.nav-children {
  display: grid;
  gap: 4px;
  padding: 4px 0 4px 12px;
  border-left: 2px solid var(--admin-border);
  margin-left: 12px;
}

.nav-child {
  width: 100%;
  min-height: 38px;
  padding: 0 12px;
  border-radius: 8px;
  background: transparent;
  color: var(--admin-muted);
  text-align: left;
  font-weight: 750;
}

.nav-child.active {
  background: var(--admin-action);
  color: var(--admin-action-text);
}

.workspace {
  min-width: 0;
  width: 100%;
  max-width: 1440px;
  padding: 28px;
}

.topbar {
  min-height: 58px;
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 18px;
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: 28px;
  line-height: 1.2;
}

h2 {
  margin-bottom: 8px;
  font-size: 24px;
  line-height: 1.25;
}

h3 {
  margin-bottom: 0;
  font-size: 16px;
}

.account-area {
  display: flex;
  align-items: center;
  gap: 12px;
}

.auth-status,
.pill,
.status-pill {
  display: inline-flex;
  align-items: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--admin-border);
  color: var(--admin-muted);
  background: var(--admin-surface);
  white-space: nowrap;
  font-size: 13px;
  font-weight: 750;
}

.auth-status[data-state="success"],
.status-pill.success {
  color: var(--admin-success);
  border-color: color-mix(in srgb, var(--admin-success) 30%, var(--admin-border));
  background: var(--admin-success-bg);
}

.auth-status[data-state="error"] {
  color: var(--admin-error);
  border-color: color-mix(in srgb, var(--admin-error) 30%, var(--admin-border));
  background: var(--admin-error-bg);
}

.page-panel {
  display: none;
}

.page-panel.active {
  display: grid;
  gap: 18px;
}

.page-heading,
.content-card,
.metric-card,
.table-card,
.summary-strip article,
.editor-panel,
.state-card,
.diff-panel,
.empty-state,
.filter-bar {
  border: 1px solid var(--admin-border);
  border-radius: 10px;
  background: var(--admin-surface);
  box-shadow: var(--admin-shadow);
}

.page-heading {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 18px;
  padding: 22px 24px;
}

.page-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.editor-panel {
  padding: 20px;
}

.form-message {
  grid-column: 1 / -1;
  min-height: 20px;
  margin: -4px 0 0;
  color: var(--admin-error);
  font-size: 13px;
  font-weight: 700;
}

.page-heading p,
.card-toolbar p {
  margin-bottom: 0;
  color: var(--admin-muted);
}

.summary-strip,
.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.summary-strip article,
.metric-card {
  padding: 16px;
}

.summary-strip strong,
.metric-card strong {
  display: block;
  margin-top: 6px;
  font-size: 22px;
}

.metric-card small {
  color: var(--admin-muted);
}

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

.content-card,
.empty-state {
  padding: 20px;
}

.section-title {
  margin-bottom: 12px;
}

.action-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.task-list {
  display: grid;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.task-list li {
  display: grid;
  gap: 4px;
}

.table-card {
  overflow: auto;
}

.app-list-card {
  overflow: hidden;
}

.card-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding: 18px 20px;
  border-bottom: 1px solid var(--admin-border);
  background: var(--admin-surface-soft);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--admin-border);
  text-align: left;
  white-space: nowrap;
}

tbody tr:last-child td {
  border-bottom: 0;
}

th {
  color: var(--admin-muted);
  font-size: 13px;
}

td span {
  display: block;
  margin-top: 4px;
  color: var(--admin-muted);
  font-size: 13px;
}

.table-action {
  min-height: 34px;
  padding: 0 12px;
}

.status-pill.muted {
  color: var(--admin-muted);
  background: var(--admin-surface-soft);
}

.config-panel {
  padding: 0;
  box-shadow: none;
  border: 0;
  background: transparent;
}

.admin-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(280px, 0.85fr);
  gap: 16px;
}

.config-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  padding: 20px;
  border: 1px solid var(--admin-border);
  border-radius: 10px;
  background: var(--admin-surface);
  box-shadow: var(--admin-shadow);
}

.compact-form {
  padding: 0;
  border: 0;
  box-shadow: none;
}

.form-section-title {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: baseline;
  padding-top: 4px;
}

.config-form label {
  display: grid;
  gap: 8px;
  color: var(--admin-muted);
  font-size: 14px;
  font-weight: 750;
}

.config-form input,
.config-form select,
.filter-bar input {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--admin-border);
  border-radius: 8px;
  padding: 0 12px;
  background: var(--admin-surface);
  color: var(--admin-text);
}

.config-form input:disabled {
  background: var(--admin-surface-soft);
  color: var(--admin-muted);
}

.form-actions {
  grid-column: 1 / -1;
  display: flex;
  gap: 10px;
  padding-top: 8px;
}

.side-panel {
  display: grid;
  gap: 12px;
  align-content: start;
}

.state-card {
  box-shadow: none;
  padding: 16px;
}

.state-card strong {
  display: block;
  margin: 6px 0;
}

.state-card ol,
.capability-list,
.activity-list {
  margin: 8px 0 0;
  padding-left: 20px;
  color: var(--admin-muted);
}

.diff-panel {
  box-shadow: none;
  overflow: hidden;
}

.diff-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--admin-border);
  background: var(--admin-surface-soft);
}

.diff-heading strong {
  display: block;
  margin-top: 4px;
}

.result-box {
  min-height: 140px;
  padding: 16px;
  background: var(--admin-surface);
  color: var(--admin-text);
  overflow: auto;
  white-space: normal;
}

.result-title {
  font-weight: 800;
  margin-bottom: 12px;
}

.result-box dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 16px;
  margin: 0;
}

.result-box dt {
  color: var(--admin-muted);
  font-size: 13px;
}

.result-box dd {
  margin: 4px 0 0;
  font-weight: 750;
  overflow-wrap: anywhere;
}

.tone-success {
  background: var(--admin-success-bg);
}

.tone-error {
  background: var(--admin-error-bg);
}

.tone-preview {
  background: var(--admin-warning-bg);
}

.filter-bar {
  display: flex;
  gap: 10px;
  padding: 16px;
}

.empty-state {
  display: grid;
  gap: 8px;
  min-height: 120px;
  align-content: center;
}

.panel-list {
  margin: 0;
  padding: 20px 20px 20px 42px;
  border: 1px solid var(--admin-border);
  border-radius: 10px;
  background: var(--admin-surface);
  box-shadow: var(--admin-shadow);
}

@media (max-width: 980px) {
  .admin-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--admin-border);
  }

  .summary-strip,
  .metric-grid,
  .two-column,
  .admin-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  .workspace {
    padding: 16px;
  }

  .topbar,
  .page-heading,
  .form-section-title,
  .filter-bar,
  .card-toolbar,
  .page-actions {
    display: grid;
  }

  .account-area,
  .form-actions {
    flex-wrap: wrap;
  }

  .config-form,
  .result-box dl {
    grid-template-columns: 1fr;
  }
}