:root {
  color-scheme: dark;
  --bg: #050505;
  --panel: #101010;
  --panel-alt: #0c0c0c;
  --line: #221313;
  --line-strong: #7f2323;
  --text: #f5f5f5;
  --muted: #9a8f8f;
  --accent: #c42d2d;
  --accent-strong: #eb4242;
  --danger: #aa2929;
  --radius: 18px;
  --radius-tight: 14px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100svh;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI Variable Text", "SF Pro Text", Inter, ui-sans-serif, system-ui, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
}

.shell {
  width: min(100% - 1rem, 88rem);
  margin: 0 auto;
  padding: 0.9rem 0 2.4rem;
  display: grid;
  gap: 1.15rem;
}

.shell__topbar,
.panel,
.status-card,
.flash {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: var(--radius);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.22);
}

.shell__topbar {
  padding: 1.15rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.25rem;
}

.shell__brand {
  display: grid;
  gap: 0.25rem;
}

.shell__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.shell__label,
.eyebrow,
.field__label,
.status-card__label,
.node-editor__title {
  margin: 0;
  font-size: 0.76rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  color: var(--muted);
}

.shell__title,
.panel h2 {
  margin: 0;
  font-family: "Segoe UI Variable Display", "SF Pro Display", Inter, ui-sans-serif, system-ui, sans-serif;
  font-weight: 650;
  letter-spacing: -0.035em;
  line-height: 1.02;
}

.shell__title {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
}

.nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav__link {
  padding: 0.72rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-tight);
  color: var(--muted);
  background: var(--panel-alt);
}

.nav__link.is-active {
  border-color: var(--line-strong);
  color: var(--text);
}

.flash-stack {
  display: grid;
  gap: 0.75rem;
}

.flash {
  padding: 1rem 1.1rem;
  color: var(--text);
}

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

.flash--success {
  border-color: var(--line-strong);
}

.panel {
  padding: 1.35rem;
  display: grid;
  gap: 1.15rem;
}

.panel--auth {
  width: min(100%, 40rem);
  margin: 0 auto;
}

.panel--compact {
  gap: 0.85rem;
}

.panel__copy {
  display: grid;
  gap: 0.5rem;
}

.panel h2 {
  font-size: clamp(1.45rem, 3vw, 2.2rem);
}

.lede {
  margin: 0;
  color: var(--muted);
  line-height: 1.75;
  max-width: 58rem;
}

.dashboard {
  display: grid;
  gap: 1rem;
}

.dashboard__grid {
  display: grid;
  gap: 1rem;
}

.status-card {
  padding: 1.15rem;
  display: grid;
  gap: 0.45rem;
  background: var(--panel-alt);
}

.status-card--active {
  border-color: var(--line-strong);
}

.status-card__value {
  font-size: clamp(1.35rem, 3vw, 1.95rem);
  font-weight: 620;
}

.status-card__meta {
  color: var(--muted);
  word-break: break-word;
}

.settings-bar {
  display: grid;
  gap: 1rem;
}

.form {
  display: grid;
  gap: 1rem;
}

.form--wide {
  gap: 1.15rem;
}

.field {
  display: grid;
  gap: 0.45rem;
}

.field--full {
  grid-column: 1 / -1;
}

.field__input {
  width: 100%;
  min-height: 3.1rem;
  padding: 0.88rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-tight);
  background: #0a0a0a;
  color: var(--text);
  font-size: 0.98rem;
}

.field__input:focus {
  outline: none;
  border-color: var(--line-strong);
  box-shadow: 0 0 0 3px rgba(196, 45, 45, 0.08);
}

.field__input--textarea {
  min-height: 7.5rem;
  resize: vertical;
}

.form__meta {
  color: var(--muted);
  font-size: 0.85rem;
  line-height: 1.7;
}

.form__meta p {
  margin: 0;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3rem;
  padding: 0.8rem 1.05rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-tight);
  background: #121212;
  color: var(--text);
  font-weight: 600;
  letter-spacing: 0;
  cursor: pointer;
}

.button:hover,
.button:focus-visible {
  outline: none;
  border-color: var(--accent-strong);
  color: #ffffff;
}

.button--ghost {
  border-color: var(--line);
  color: var(--muted);
  background: #0d0d0d;
}

.button--danger {
  border-color: var(--danger);
  color: #d69e9e;
}

.node-editor {
  display: grid;
  gap: 1rem;
}

.node-editor__item {
  display: grid;
  gap: 1rem;
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel-alt);
}

.node-editor__header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
}

.node-editor__grid {
  display: grid;
  gap: 0.9rem;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--muted);
  font-size: 0.95rem;
}

.toggle input {
  accent-color: var(--accent);
}

.feature-list,
.key-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.key-list {
  display: grid;
  gap: 0.75rem;
}

.key-list__row {
  display: grid;
  gap: 0.25rem;
  padding: 0.95rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-tight);
  background: var(--panel-alt);
}

.key-list__row dt {
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
}

.key-list__row dd {
  margin: 0;
  word-break: break-word;
}

.audit-log {
  display: grid;
  gap: 0.75rem;
}

.audit-log__header,
.audit-log__row {
  display: grid;
  gap: 0.65rem;
  padding: 0.95rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-tight);
  background: var(--panel-alt);
}

.audit-log__header {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 600;
}

.audit-log__row {
  line-height: 1.6;
}

@media (min-width: 48rem) {
  .shell {
    width: min(100% - 2rem, 92rem);
    padding-top: 1rem;
  }

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

  .settings-bar {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }

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

  .audit-log__header,
  .audit-log__row {
    grid-template-columns: 11rem minmax(0, 2fr) minmax(9rem, 1fr) minmax(9rem, 1fr);
  }
}

@media (max-width: 47.99rem) {
  .shell__topbar,
  .shell__actions,
  .node-editor__header,
  .button-row {
    flex-direction: column;
    align-items: stretch;
  }

  .nav {
    width: 100%;
  }

  .nav__link,
  .button {
    width: 100%;
  }
}

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