:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-alt: #eef3f8;
  --ink: #121826;
  --muted: #596273;
  --quiet: #7d8798;
  --line: #dbe3ee;
  --line-strong: #bfccd9;
  --green: #17b26a;
  --blue: #2563eb;
  --coral: #e25544;
  --yellow: #f4c430;
  --shadow: 0 24px 60px rgba(31, 41, 55, 0.12);
  --focus: #0f172a;
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

body {
  margin: 0;
}

button,
input {
  font: inherit;
}

button {
  cursor: pointer;
}

a {
  color: inherit;
}

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  background: var(--ink);
  border-radius: 8px;
  color: var(--surface);
  font-weight: 700;
  left: 1rem;
  padding: 0.65rem 0.85rem;
  position: fixed;
  text-decoration: none;
  top: -5rem;
  z-index: 20;
}

.skip-link:focus {
  top: 1rem;
}

#content-slot {
  min-height: 100vh;
}

.app-shell {
  display: grid;
  grid-template-columns: 19rem minmax(0, 1fr);
  min-height: 100vh;
}

.settings-sidebar {
  background: var(--surface);
  border-right: 1px solid var(--line);
  display: grid;
  gap: 1.4rem;
  grid-template-rows: auto auto 1fr;
  min-width: 0;
  padding: 1.25rem;
}

.brand-lockup {
  align-items: center;
  display: flex;
  gap: 0.85rem;
}

.brand-mark {
  align-items: center;
  background: var(--ink);
  border-radius: 8px;
  color: var(--surface);
  display: inline-flex;
  font-size: 0.78rem;
  font-weight: 800;
  height: 2.6rem;
  justify-content: center;
  width: 2.6rem;
}

.brand-lockup p,
.brand-lockup strong,
.workspace-kicker,
.panel-kicker,
.current-route span,
.field span,
.plan-summary span,
.usage-stack span {
  margin: 0;
}

.brand-lockup p,
.workspace-kicker,
.panel-kicker,
.current-route span,
.field span,
.plan-summary span,
.usage-stack span {
  color: var(--quiet);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
}

.brand-lockup strong {
  display: block;
  font-size: 0.98rem;
}

.settings-nav {
  display: grid;
  gap: 0.35rem;
}

.settings-nav-link {
  align-items: center;
  border: 1px solid transparent;
  border-radius: 8px;
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 2.25rem minmax(0, 1fr);
  padding: 0.65rem;
  text-decoration: none;
  transition:
    background 160ms ease,
    border-color 160ms ease,
    transform 160ms ease;
}

.settings-nav-link:hover,
.settings-nav-link:focus-visible {
  background: var(--surface-alt);
  border-color: var(--line);
}

.settings-nav-link.is-active {
  background: #e7f7ee;
  border-color: #9bd8b9;
  color: #0f5132;
}

.settings-nav-link.is-active .nav-icon {
  background: var(--green);
  color: var(--surface);
}

.nav-icon {
  align-items: center;
  background: var(--surface-alt);
  border-radius: 8px;
  color: var(--muted);
  display: inline-flex;
  font-size: 0.78rem;
  font-weight: 800;
  height: 2.25rem;
  justify-content: center;
  width: 2.25rem;
}

.settings-nav-link strong,
.settings-nav-link small {
  display: block;
}

.settings-nav-link small {
  color: var(--muted);
  font-size: 0.82rem;
}

.sidebar-note {
  align-self: end;
  background: #fff8dc;
  border: 1px solid #f0dc8f;
  border-radius: 8px;
  color: #51431b;
  padding: 0.95rem;
}

.sidebar-note strong {
  display: block;
  margin-bottom: 0.35rem;
}

.sidebar-note p {
  font-size: 0.9rem;
  margin: 0;
}

.sidebar-note code {
  background: rgba(81, 67, 27, 0.1);
  border-radius: 5px;
  padding: 0.05rem 0.25rem;
}

.settings-workspace {
  min-width: 0;
  padding: 2rem;
}

.workspace-header {
  align-items: start;
  display: flex;
  gap: 1.5rem;
  justify-content: space-between;
  margin: 0 auto 1.4rem;
  max-width: 68rem;
}

.workspace-header h1 {
  font-size: 2.2rem;
  line-height: 1.08;
  margin: 0.1rem 0 0.8rem;
}

.workspace-header p:not(.workspace-kicker) {
  color: var(--muted);
  margin: 0;
  max-width: 45rem;
}

.current-route {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: 0 10px 30px rgba(31, 41, 55, 0.08);
  flex: 0 0 auto;
  min-width: 11rem;
  padding: 0.85rem 1rem;
}

.current-route strong {
  display: block;
}

.settings-panel {
  display: block;
  margin: 0 auto;
  max-width: 68rem;
}

.panel-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 8px;
  box-shadow: var(--shadow);
  padding: 1.4rem;
}

.panel-header {
  align-items: start;
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 1rem;
  grid-template-columns: minmax(0, 1fr) auto;
  padding-bottom: 1.15rem;
}

.panel-header h2 {
  font-size: 1.55rem;
  line-height: 1.15;
  margin: 0.05rem 0 0.5rem;
}

.panel-header p:not(.panel-kicker) {
  color: var(--muted);
  margin: 0;
  max-width: 44rem;
}

.status-pill {
  background: #e9f2ff;
  border: 1px solid #b8cef6;
  border-radius: 999px;
  color: #1b4a9f;
  font-size: 0.82rem;
  font-weight: 800;
  padding: 0.35rem 0.7rem;
}

.status-pill.strong {
  background: #e7f7ee;
  border-color: #9bd8b9;
  color: #0f5132;
}

.field-grid {
  display: grid;
  gap: 0.9rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  padding-block: 1.25rem;
}

.field {
  display: grid;
  gap: 0.4rem;
}

.field input {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  min-width: 0;
  padding: 0.78rem 0.85rem;
}

.detail-strip,
.security-score,
.notification-layout,
.usage-layout {
  border-block: 1px solid var(--line);
  display: grid;
  gap: 1rem;
  padding-block: 1.25rem;
}

.detail-strip {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.detail-strip div {
  border-left: 4px solid var(--green);
  padding-left: 0.8rem;
}

.detail-strip strong,
.security-score strong {
  display: block;
  font-size: 1.6rem;
  line-height: 1;
}

.detail-strip span,
.rule-list span,
.session-row span,
.session-row time,
.channel-row small,
.digest-summary p,
.plan-summary p,
.invoice-row span {
  color: var(--muted);
}

.panel-actions {
  display: flex;
  gap: 0.75rem;
  justify-content: flex-end;
  padding-top: 1.25rem;
}

.primary-button,
.secondary-button {
  border-radius: 8px;
  font-weight: 800;
  min-height: 2.6rem;
  padding: 0.65rem 1rem;
}

.primary-button {
  background: var(--ink);
  border: 1px solid var(--ink);
  color: var(--surface);
}

.secondary-button {
  background: var(--surface);
  border: 1px solid var(--line-strong);
  color: var(--ink);
}

.security-score {
  align-items: center;
  grid-template-columns: 10rem minmax(0, 1fr);
}

meter {
  height: 0.9rem;
  width: 100%;
}

.rule-list,
.session-list,
.channel-list,
.usage-stack,
.invoice-table {
  display: grid;
  gap: 0;
}

.rule-list {
  padding: 1.25rem 0;
}

.rule-list div,
.session-row,
.channel-row,
.invoice-row {
  align-items: center;
  border-bottom: 1px solid var(--line);
  display: grid;
  gap: 1rem;
  padding: 0.85rem 0;
}

.rule-list div {
  grid-template-columns: 12rem minmax(0, 1fr);
}

.session-list h3,
.invoice-table h3 {
  font-size: 1rem;
  margin: 1.2rem 0 0.2rem;
}

.session-row {
  grid-template-columns: minmax(8rem, 1fr) minmax(10rem, 1fr) auto;
}

.notification-layout {
  grid-template-columns: 15rem minmax(0, 1fr);
}

.digest-summary {
  background: #e9f2ff;
  border-left: 4px solid var(--blue);
  border-radius: 8px;
  padding: 1rem;
}

.digest-summary strong,
.digest-summary span {
  display: block;
}

.digest-summary strong {
  font-size: 1.35rem;
}

.digest-summary p {
  margin: 0.75rem 0 0;
}

.channel-row {
  grid-template-columns: minmax(0, 1fr) auto;
}

.channel-row input {
  accent-color: var(--green);
  height: 1.2rem;
  width: 1.2rem;
}

.usage-layout {
  grid-template-columns: minmax(13rem, 0.7fr) minmax(0, 1fr);
}

.plan-summary {
  border-left: 4px solid var(--coral);
  padding-left: 0.9rem;
}

.plan-summary strong {
  display: block;
  font-size: 1.35rem;
  margin-top: 0.2rem;
}

.usage-stack label {
  display: grid;
  gap: 0.35rem;
  padding: 0.55rem 0;
}

.invoice-row {
  grid-template-columns: minmax(8rem, 1fr) minmax(8rem, 1fr) auto auto;
}

.invoice-row em {
  background: #e7f7ee;
  border-radius: 999px;
  color: #0f5132;
  font-style: normal;
  font-weight: 800;
  padding: 0.2rem 0.55rem;
}

@media (max-width: 860px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .settings-sidebar {
    border-bottom: 1px solid var(--line);
    border-right: 0;
    grid-template-rows: auto auto;
  }

  .settings-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .sidebar-note {
    display: none;
  }

  .settings-workspace {
    padding: 1.15rem;
  }

  .workspace-header,
  .panel-header,
  .field-grid,
  .detail-strip,
  .security-score,
  .notification-layout,
  .usage-layout,
  .rule-list div,
  .session-row,
  .invoice-row {
    grid-template-columns: 1fr;
  }

  .workspace-header {
    display: grid;
  }

  .current-route {
    min-width: 0;
  }
}

@media (max-width: 560px) {
  .settings-nav {
    grid-template-columns: 1fr;
  }

  .workspace-header h1 {
    font-size: 1.75rem;
  }

  .panel-card {
    padding: 1rem;
  }

  .panel-actions {
    display: grid;
  }
}