:root {
  color-scheme: light;
  --bg: #f5f6f7;
  --surface: #ffffff;
  --surface-soft: #f8f9fa;
  --text: #20272b;
  --muted: #68747b;
  --border: #dfe4e6;
  --accent: #087f77;
  --accent-soft: #e8f4f2;
  --up: #27814b;
  --up-bg: #edf7f0;
  --degraded: #9c6917;
  --degraded-bg: #fff6e5;
  --down: #b43b3b;
  --down-bg: #fceeee;
  --unknown: #6c7680;
  --unknown-bg: #eef0f2;
  font-family:
    -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  font-size: 14px;
  font-variant-numeric: tabular-nums;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #15191b;
    --surface: #1c2225;
    --surface-soft: #22292d;
    --text: #e2e8eb;
    --muted: #9ba7ae;
    --border: #343e43;
    --accent: #59c2b6;
    --accent-soft: #213d3a;
    --up: #7ecb9a;
    --up-bg: #20382b;
    --degraded: #e7bd75;
    --degraded-bg: #3b3222;
    --down: #ed9696;
    --down-bg: #40292b;
    --unknown: #acb7bf;
    --unknown-bg: #30383e;
  }
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #15191b;
  --surface: #1c2225;
  --surface-soft: #22292d;
  --text: #e2e8eb;
  --muted: #9ba7ae;
  --border: #343e43;
  --accent: #59c2b6;
  --accent-soft: #213d3a;
  --up: #7ecb9a;
  --up-bg: #20382b;
  --degraded: #e7bd75;
  --degraded-bg: #3b3222;
  --down: #ed9696;
  --down-bg: #40292b;
  --unknown: #acb7bf;
  --unknown-bg: #30383e;
}

* {
  box-sizing: border-box;
}
[hidden] {
  display: none !important;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
button,
input,
select,
textarea {
  font: inherit;
}
button,
summary {
  cursor: pointer;
}
button {
  color: inherit;
}
button:disabled {
  cursor: wait;
  opacity: 0.55;
}
a {
  color: var(--accent);
  text-decoration: none;
}
button,
a,
input,
select,
textarea,
summary {
  -webkit-tap-highlight-color: transparent;
}
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
h1,
h2,
h3,
p {
  margin-top: 0;
}
h1 {
  margin-bottom: 6px;
  font-size: 28px;
  font-weight: 650;
  letter-spacing: -0.6px;
}
h2 {
  margin-bottom: 6px;
  font-size: 17px;
  font-weight: 650;
}
h3 {
  margin-bottom: 6px;
  font-size: 15px;
}
p {
  margin-bottom: 12px;
}
small {
  font-size: 12px;
}
.muted,
.note,
.metric small {
  color: var(--muted);
}
.eyebrow {
  margin-bottom: 8px;
  color: var(--muted);
  font-size: 10px;
  font-weight: 650;
  letter-spacing: 1.6px;
}
.app-shell {
  display: grid;
  grid-template-columns: 224px minmax(0, 1fr);
  min-height: 100vh;
}
.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 28px 18px 22px;
  border-right: 1px solid var(--border);
  background: var(--surface);
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 10px 40px;
  color: var(--text);
  font-weight: 650;
}
.brand small {
  display: block;
  color: var(--muted);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 1px;
}
.brand-mark {
  display: grid;
  width: 32px;
  height: 34px;
  place-items: center;
  border-radius: 8px;
  background: var(--accent);
  color: var(--surface);
  font-size: 20px;
}
.navigation {
  display: grid;
  gap: 6px;
}
.nav-item {
  display: flex;
  gap: 18px;
  padding: 12px 16px;
  text-align: left;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
}
.nav-item span {
  color: var(--muted);
  font-size: 11px;
  align-self: center;
}
.nav-item:hover {
  background: var(--surface-soft);
}
.nav-item.active {
  color: var(--accent);
  background: var(--accent-soft);
  font-weight: 650;
}
.nav-item.active span {
  color: var(--accent);
}
.sidebar-bottom {
  margin-top: auto;
  padding: 24px 10px 0;
}
.sidebar-bottom p {
  color: var(--muted);
  font-size: 12px;
}
.topbar {
  display: flex;
  min-height: 68px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 36px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.breadcrumb {
  font-size: 12px;
  color: var(--muted);
}
.breadcrumb span {
  margin: 0 12px;
  color: var(--border);
}
.breadcrumb strong {
  color: var(--text);
  font-weight: 500;
}
.topbar-actions,
.button-row,
.dialog-footer,
.form-footer {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.request-status {
  color: var(--muted);
  font-size: 11px;
}
.request-status.loading::before {
  content: "";
  display: inline-block;
  width: 9px;
  height: 9px;
  margin-right: 6px;
  border: 1px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
main {
  max-width: 1560px;
  margin: auto;
  padding: 34px 36px;
  outline: none;
}
.page-heading,
.section-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.page-heading {
  margin-bottom: 28px;
}
.page-heading p:last-child,
.section-heading p:last-child {
  margin-bottom: 0;
}
.section-heading {
  margin-bottom: 20px;
}
.section-heading .muted {
  font-size: 12px;
}
.button {
  min-height: 36px;
  padding: 7px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  font-size: 12px;
  font-weight: 550;
  white-space: nowrap;
}
.button:hover {
  border-color: var(--muted);
}
.button.primary {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--surface);
}
.button.quiet {
  background: transparent;
  border-color: transparent;
  color: var(--muted);
}
.button.small {
  min-height: 30px;
  padding: 4px 10px;
  font-size: 11px;
}
.panel {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  margin-bottom: 24px;
}
.setup-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 20px 24px;
  margin-bottom: 24px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  background: var(--surface);
}
.setup-banner p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 12px;
}
.metric-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  margin-bottom: 24px;
}
.metric {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
}
.metric p {
  margin-bottom: 18px;
  color: var(--muted);
  font-size: 12px;
}
.metric-value {
  margin-bottom: 10px;
  font-size: 29px;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.5px;
}
.metric-value.compact {
  font-size: 20px;
  line-height: 1.8;
}
.metric small {
  display: block;
  line-height: 1.6;
}
.overview-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) minmax(260px, 1fr);
  gap: 24px;
}
.detail-list {
  margin: 0;
}
.detail-list div {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 11px 0;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}
.detail-list dt {
  color: var(--muted);
  flex-shrink: 0;
}
.detail-list dd {
  margin: 0;
  text-align: right;
  overflow-wrap: anywhere;
}
.note {
  margin-top: 16px;
  font-size: 12px;
  line-height: 1.8;
}
.status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border-radius: 8px;
  background: var(--unknown-bg);
  color: var(--unknown);
  font-size: 10px;
  font-weight: 650;
  letter-spacing: 0.4px;
}
.status::before {
  content: "";
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}
.status.up {
  color: var(--up);
  background: var(--up-bg);
}
.status.degraded {
  color: var(--degraded);
  background: var(--degraded-bg);
}
.status.down {
  color: var(--down);
  background: var(--down-bg);
}
.compact-node {
  display: grid;
  grid-template-columns: minmax(100px, 1fr) 96px 70px 65px;
  align-items: center;
  gap: 16px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}
.compact-node:last-child {
  border-bottom: 0;
}
.compact-node small {
  display: block;
  color: var(--muted);
}
.compact-node .numeric {
  text-align: right;
}
.toolbar {
  display: flex;
  align-items: end;
  gap: 16px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}
.toolbar .search-label {
  flex: 1;
  min-width: 180px;
}
label {
  display: grid;
  gap: 7px;
  color: var(--text);
  font-size: 12px;
  font-weight: 550;
}
input,
select,
textarea {
  width: 100%;
  min-height: 38px;
  padding: 8px 11px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
}
input::placeholder,
textarea::placeholder {
  color: var(--muted);
  opacity: 0.75;
}
textarea {
  resize: vertical;
}
input:invalid:not(:placeholder-shown)[aria-invalid="true"] {
  border-color: var(--down);
}
.checkbox {
  display: flex;
  align-items: center;
  gap: 9px;
  font-weight: 400;
}
.checkbox input {
  width: 15px;
  height: 15px;
  min-height: 0;
  accent-color: var(--accent);
}
label small {
  color: var(--muted);
  font-size: 11px;
  font-weight: 400;
}
.node-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 18px;
}
.node-card {
  padding: 22px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  min-width: 0;
}
.node-card .section-heading {
  align-items: start;
  margin-bottom: 18px;
}
.node-card h3 {
  overflow-wrap: anywhere;
}
.node-address {
  color: var(--muted);
  font-size: 11px;
  overflow-wrap: anywhere;
}
.node-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}
.node-stats small {
  display: block;
  color: var(--muted);
  font-size: 11px;
}
.node-stats strong {
  font-size: 19px;
  font-weight: 550;
}
.traffic-label {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  font-size: 11px;
  color: var(--muted);
}
progress {
  display: block;
  width: 100%;
  height: 5px;
  margin: 8px 0;
  border: 0;
  border-radius: 8px;
  overflow: hidden;
  background: var(--border);
  accent-color: var(--accent);
}
progress::-webkit-progress-bar {
  background: var(--border);
}
progress::-webkit-progress-value {
  background: var(--accent);
}
progress::-moz-progress-bar {
  background: var(--accent);
}
.node-card .button-row {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  gap: 6px;
}
.node-error {
  min-height: 18px;
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 11px;
  overflow-wrap: anywhere;
}
.settings-layout {
  display: grid;
  grid-template-columns: 160px minmax(0, 1fr);
  gap: 24px;
}
.settings-tabs {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.settings-tab {
  padding: 10px 14px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  text-align: left;
  color: var(--muted);
  font-size: 13px;
}
.settings-tab.active {
  color: var(--accent);
  background: var(--accent-soft);
  font-weight: 600;
}
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
}
.full {
  grid-column: 1 / -1;
}
.form-intro {
  margin-bottom: 24px;
}
.form-footer {
  justify-content: space-between;
  border-top: 1px solid var(--border);
  padding-top: 20px;
  margin-top: 24px;
}
.form-footer .muted {
  font-size: 12px;
}
.form-error {
  margin: 12px 0 0;
  color: var(--down);
  font-size: 12px;
  white-space: pre-wrap;
}
.form-error:empty {
  display: none;
}
.backup-panel .button-row {
  margin-top: 16px;
}
.backup-panel p {
  font-size: 12px;
}
.event-row {
  display: grid;
  grid-template-columns: 146px 1fr;
  gap: 20px;
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}
.event-row:last-child {
  border-bottom: 0;
}
.event-row time {
  color: var(--muted);
  font-size: 11px;
}
.event-row p {
  margin: 0;
  overflow-wrap: anywhere;
}
.empty-state {
  padding: 36px 20px;
  text-align: center;
  color: var(--muted);
}
.empty-state h3 {
  color: var(--text);
}
.empty-state p {
  font-size: 12px;
  max-width: 400px;
  margin: 8px auto 20px;
}
.empty-state.full {
  grid-column: 1 / -1;
  border: 1px dashed var(--border);
  border-radius: 8px;
}
.page-footer {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 0 36px 24px;
  color: var(--muted);
  font-size: 10px;
}
dialog {
  width: min(480px, calc(100% - 32px));
  max-height: calc(100dvh - 48px);
  padding: 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  overflow-y: auto;
}
dialog::backdrop {
  background: rgb(16 24 28 / 45%);
}
.wide-dialog {
  width: min(800px, calc(100% - 32px));
}
.dialog-heading {
  padding: 26px 28px 20px;
  border-bottom: 1px solid var(--border);
}
.dialog-heading .section-heading {
  margin-bottom: 6px;
}
.dialog-heading p:last-child {
  margin-bottom: 0;
  font-size: 12px;
}
.dialog-body {
  padding: 24px 28px;
}
.dialog-body > label + label {
  margin-top: 18px;
}
.dialog-footer {
  justify-content: flex-end;
  padding: 18px 28px;
  border-top: 1px solid var(--border);
  background: var(--surface-soft);
}
.dialog-error {
  margin: 0 28px 18px;
}
.spacer {
  flex: 1;
}
.wizard-steps {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  list-style: none;
  margin: 0;
  padding: 20px 28px 0;
  gap: 8px;
}
.wizard-steps li {
  display: flex;
  align-items: center;
  gap: 6px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
  font-size: 11px;
  color: var(--muted);
}
.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 22px;
  width: 22px;
  height: 22px;
  border: 1px solid currentColor;
  border-radius: 50%;
  font-variant-numeric: tabular-nums;
}
code,
.json-editor {
  font-family:
    ui-monospace, "Cascadia Mono", Consolas, "SF Mono", Menlo, monospace;
  letter-spacing: normal;
}
.wizard-steps li.active {
  color: var(--accent);
  border-color: var(--accent);
  font-weight: 650;
}
.wizard-content {
  min-height: 280px;
}
.wizard-content h3 {
  font-size: 18px;
  margin-bottom: 12px;
}
.wizard-content p {
  color: var(--muted);
  font-size: 13px;
}
.wizard-content .form-grid {
  margin-top: 20px;
}
.callout {
  padding: 14px 16px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  margin: 18px 0;
  background: var(--surface-soft);
  font-size: 12px;
}
.table-wrap {
  overflow-x: auto;
  margin: 18px 0;
}
table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 12px;
}
th {
  background: var(--surface-soft);
  color: var(--muted);
  font-weight: 500;
}
th,
td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--border);
  overflow-wrap: anywhere;
}
td code {
  white-space: nowrap;
}
.manual-details {
  border-top: 1px solid var(--border);
}
.manual-details > summary {
  padding: 18px 28px;
  color: var(--muted);
  font-size: 12px;
}
.manual-details .dialog-body {
  padding-top: 4px;
}
.preview-item {
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
}
.preview-item small {
  display: block;
  color: var(--muted);
}
.preserve-lines {
  white-space: pre-wrap;
}
.json-editor {
  min-height: 380px;
  font-size: 12px;
  line-height: 1.7;
}
.toast-region {
  position: fixed;
  right: 24px;
  bottom: 24px;
  z-index: 100;
  display: grid;
  gap: 8px;
  max-width: min(420px, calc(100% - 32px));
}
.toast {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 13px 18px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  font-size: 12px;
}
.toast.error {
  border-left-color: var(--down);
}
.toast-close {
  border: 0;
  padding: 0;
  background: transparent;
  color: var(--muted);
  font-size: 10px;
  white-space: nowrap;
}
.mobile-logout {
  display: none;
}
.skip-link {
  position: fixed;
  top: -60px;
  left: 12px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}
.skip-link:focus {
  top: 10px;
}

@media (max-width: 1150px) {
  .app-shell {
    grid-template-columns: 190px minmax(0, 1fr);
  }
  main {
    padding: 28px 24px;
  }
  .topbar {
    padding-inline: 24px;
  }
  .metric-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .overview-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }
  .settings-layout {
    grid-template-columns: 130px minmax(0, 1fr);
    gap: 16px;
  }
}

@media (max-width: 760px) {
  .mobile-logout {
    display: inline-block;
  }
  .app-shell {
    display: block;
  }
  .sidebar {
    position: static;
    height: auto;
    padding: 16px 16px 0;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }
  .brand {
    margin: 0 0 16px;
    font-size: 14px;
  }
  .brand small {
    display: none;
  }
  .brand-mark {
    width: 26px;
    height: 28px;
    font-size: 16px;
  }
  .navigation {
    grid-template-columns: repeat(4, 1fr);
    gap: 4px;
    padding-bottom: 12px;
  }
  .nav-item {
    justify-content: center;
    padding: 8px;
  }
  .nav-item span,
  .sidebar-bottom {
    display: none;
  }
  .topbar {
    min-height: 52px;
    padding: 8px 16px;
  }
  .request-status {
    font-size: 0;
    width: 10px;
    height: 10px;
    flex: 0 0 10px;
    border-radius: 50%;
    background: var(--muted);
  }
  .request-status[data-connected="true"] {
    background: var(--accent);
  }
  .request-status.loading::before {
    display: none;
  }
  .request-status.loading {
    outline: 2px solid var(--border);
    outline-offset: 2px;
  }
  main {
    padding: 24px 16px;
  }
  .page-heading {
    align-items: start;
    flex-direction: column;
    margin-bottom: 22px;
  }
  h1 {
    font-size: 24px;
  }
  .page-heading .button-row {
    width: 100%;
    justify-content: flex-end;
  }
  .page-heading .muted {
    font-size: 12px;
  }
  .metric-grid {
    gap: 12px;
  }
  .metric {
    padding: 16px;
  }
  .metric p {
    margin-bottom: 14px;
  }
  .metric-value {
    font-size: 24px;
  }
  .metric-value.compact {
    font-size: 16px;
    line-height: 1.9;
  }
  .panel {
    padding: 18px;
    margin-bottom: 18px;
  }
  .compact-node {
    grid-template-columns: minmax(70px, 1fr) 82px 58px;
    gap: 10px;
  }
  .compact-node .probability {
    display: none;
  }
  .setup-banner {
    align-items: start;
    flex-direction: column;
    padding: 18px;
  }
  .node-grid {
    grid-template-columns: minmax(0, 1fr);
  }
  .settings-layout {
    display: block;
  }
  .settings-tabs {
    flex-direction: row;
    overflow-x: auto;
    margin-bottom: 16px;
  }
  .settings-tab {
    flex-shrink: 0;
    white-space: nowrap;
    padding: 8px 12px;
  }
  .form-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }
  .event-row {
    grid-template-columns: 1fr;
    gap: 3px;
  }
  .page-footer {
    padding: 0 16px 20px;
  }
  .dialog-heading {
    padding: 22px 20px 16px;
  }
  .dialog-body {
    padding: 20px;
  }
  .dialog-footer {
    padding: 16px 20px;
    gap: 8px;
  }
  .dialog-error {
    margin-inline: 20px;
  }
  .wizard-steps {
    padding: 16px 20px 0;
    gap: 5px;
  }
  .wizard-steps li {
    font-size: 10px;
    flex-direction: column;
    gap: 6px;
  }
  .wizard-content {
    min-height: 240px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    scroll-behavior: auto !important;
  }
}