:root {
  color-scheme: dark;
  --bg: #0b1020;
  --bg-soft: rgba(17, 24, 39, 0.82);
  --panel: rgba(15, 23, 42, 0.88);
  --panel-border: rgba(148, 163, 184, 0.14);
  --text: #e5eefb;
  --muted: #9fb0c8;
  --accent: #f59e0b;
  --accent-2: #22c55e;
  --danger: #f87171;
  --shadow: 0 20px 50px rgba(0, 0, 0, 0.35);
  --radius: 20px;
  --radius-sm: 14px;
  --gap: 16px;
  --font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(245, 158, 11, 0.12), transparent 28%),
    radial-gradient(circle at top right, rgba(34, 197, 94, 0.12), transparent 24%),
    linear-gradient(180deg, #060914, #0b1020 30%, #090d18 100%);
  min-height: 100vh;
}

.shell {
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 32px 0 56px;
}

.top-note-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

h2, p {
  margin-top: 0;
}

.eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
}

.status-lag-note {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  text-align: right;
}

.panel,
.status-card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.panel {
  padding: 20px;
  margin-top: 18px;
}

.notification-field {
  margin-top: 12px;
}

.status-card {
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.status-chip {
  display: inline-flex;
  align-self: flex-start;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(245, 158, 11, 0.18);
  color: #ffd479;
  font-size: 0.82rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 20px;
  margin-bottom: 18px;
}

.panel-header p {
  color: var(--muted);
}

.grid {
  display: grid;
  gap: var(--gap);
}

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

.state-flow {
  display: grid;
  gap: 14px;
}

.state-machine {
  display: grid;
  gap: 12px;
}

.mode-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
}

.mode-button {
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  background: rgba(2, 6, 23, 0.45);
  color: var(--text);
}

.mode-button.active {
  border-color: rgba(245, 158, 11, 0.5);
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.22), rgba(249, 115, 22, 0.16));
  color: #fff7ed;
}

.mode-button[data-mode="off"] {
  background: rgba(148, 163, 184, 0.08);
}

.state-ack {
  color: var(--muted);
}

.state-track {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding-bottom: 4px;
  scrollbar-width: thin;
}

.state-node {
  flex: 1 0 0;
  min-width: 110px;
  text-align: center;
  padding: 10px 12px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  background: rgba(148, 163, 184, 0.08);
  color: var(--muted);
  white-space: nowrap;
}

.state-node.seen {
  color: #dbeafe;
}

.state-node.active {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.28), rgba(249, 115, 22, 0.28));
  color: #fff7ed;
  border-color: rgba(245, 158, 11, 0.45);
  font-weight: 700;
}

.machine-actions {
  display: grid;
  gap: 10px;
}

.machine-mode-row {
  margin-top: 2px;
}

.machine-meta {
  font-size: 0.84rem;
}

@media (max-width: 760px) {
  .shell {
    width: min(100vw - 20px, 560px);
    padding: 18px 0 32px;
  }

  .top-note-row {
    align-items: flex-start;
  }

  .panel {
    padding: 14px;
    margin-top: 12px;
  }

  .panel-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 6px;
    margin-bottom: 12px;
  }

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

  .state-track {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
    overflow: visible;
    padding-bottom: 0;
  }

  .state-node {
    min-width: 0;
    border-radius: 12px;
    margin-top: 0;
    padding: 8px 9px;
    font-size: 0.84rem;
    white-space: normal;
  }

  .actions {
    flex-direction: column;
  }

  .actions button {
    width: 100%;
  }

  .state-actions button {
    width: 100%;
  }

  .mode-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 6px;
  }

  .mode-button,
  .empty-ack-button {
    padding: 10px 8px;
    font-size: 0.9rem;
  }

  .item-head {
    align-items: flex-start;
    margin-bottom: 6px;
  }

  .panel-header p,
  .small {
    font-size: 0.84rem;
  }
}


.field,
.fieldset {
  display: flex;
  flex-direction: column;
  gap: 10px;
  background: var(--bg-soft);
  padding: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(148, 163, 184, 0.12);
}

.field span,
.fieldset legend {
  color: #d7e4f5;
  font-weight: 700;
}

input,
select,
button {
  font: inherit;
}

input,
select {
  width: 100%;
  background: rgba(2, 6, 23, 0.7);
  color: var(--text);
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 12px;
  padding: 12px 14px;
}

fieldset {
  border: 0;
  margin: 0;
  min-inline-size: auto;
}

label {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}

button {
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  cursor: pointer;
  font-weight: 700;
}

button.primary {
  background: linear-gradient(135deg, #f59e0b, #f97316);
  color: #111827;
}

button.secondary {
  background: rgba(148, 163, 184, 0.16);
  color: var(--text);
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.help,
.muted {
  color: var(--muted);
}

.list,
.activity {
  display: grid;
  gap: 12px;
}

.item {
  background: rgba(2, 6, 23, 0.45);
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: 16px;
  padding: 14px;
}

.item-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 8px;
}

.item-head strong {
  min-width: 0;
}

.pill-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.pill {
  display: inline-flex;
  border-radius: 999px;
  padding: 5px 10px;
  font-size: 0.82rem;
  background: rgba(148, 163, 184, 0.14);
  color: #dbeafe;
}

.pill.good {
  background: rgba(34, 197, 94, 0.18);
  color: #bbf7d0;
}

.pill.warn {
  background: rgba(245, 158, 11, 0.18);
  color: #fed7aa;
}

.empty-ack-button:disabled {
  opacity: 0.28;
  background: rgba(148, 163, 184, 0.08);
  border: 1px dashed rgba(148, 163, 184, 0.22);
  color: rgba(229, 238, 251, 0.45);
  box-shadow: none;
  filter: grayscale(1);
}

.pill.bad {
  background: rgba(248, 113, 113, 0.18);
  color: #fecaca;
}

.small {
  font-size: 0.92rem;
  color: var(--muted);
}

@media (max-width: 900px) {
  .grid.two {
    grid-template-columns: 1fr;
  }
}