:root {
  color-scheme: dark;
  --font-mono: ui-monospace, "Cascadia Mono", "SFMono-Regular", Menlo, Consolas, "Liberation Mono", monospace;
  font-family: var(--font-mono);
  background: var(--paper);
  color: var(--ink);
  --ink: #eae6ea;
  --muted: #a39eab;
  --faint: #787282;
  --paper: #19161d;
  --line: #423e4b;
  --accent: #a6b5db;
  --link: #e3a1a7;
  --warm: #d8ae67;
  --workspace: 1600px;
  --prose: 72ch;
  --control: 22rem;
}

:root[data-theme="light"] {
  color-scheme: light;
  --ink: #25232a;
  --muted: #615d69;
  --faint: #837e8a;
  --paper: #f6f3f4;
  --line: #beb9c1;
  --accent: #2c5db5;
  --link: #ac2142;
  --warm: #7c5915;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { min-width: 280px; background: var(--paper); }
body { margin: 0; min-height: 100vh; background: var(--paper); color: var(--ink); font: 15px/1.45 var(--font-mono); }
main { width: min(var(--workspace), calc(100% - 48px)); margin-inline: auto; padding: 24px 0 48px; }
header, .diagnostic-heading { display: flex; justify-content: space-between; gap: 20px; align-items: center; }
.header-status { display: flex; gap: 10px; align-items: center; }
.theme-toggle { min-height: auto; padding: 0; border: 0; background: transparent; color: var(--muted); font-weight: 400; text-decoration: underline; }
.theme-toggle:hover { color: var(--accent); }
.theme-toggle:not([data-ready]) { visibility: hidden; }
.connection { display: grid; grid-template-columns: minmax(220px, 0.75fr) minmax(320px, 1.25fr); gap: 20px; align-items: start; }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 4px; font-size: clamp(2rem, 3vw, 2.75rem); line-height: 1.1; letter-spacing: -0.04em; }
h2 { font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--accent); }
.eyebrow { margin-bottom: 4px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.14em; font-size: 0.72rem; }
.panel { margin-top: 14px; padding: 16px; border: 1px solid var(--line); background: var(--paper); border-radius: 6px; }
.panel > p, .connection p, .authored-description, .operation-policy { max-width: var(--prose); }
.state { padding: 6px 10px; border: 1px solid var(--line); border-radius: 999px; color: var(--warm); }
.state.connected { color: var(--accent); }
.actions { display: flex; gap: 8px; flex-wrap: wrap; }
.connection-fields { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.connection-fields > .field-wide { grid-column: 1 / -1; }
.connection-fields input, .connection-fields select { width: 100%; }
.connection-actions, #candidates, .capture-limits { grid-column: 1 / -1; }
.stored-packages { display: grid; gap: 8px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 4px; }
.stored-packages > p { margin: 0; font-size: 0.8rem; }
.capture-limit-fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; padding-top: 10px; }
.capture-limit-fields p { grid-column: 1 / -1; margin: 0; max-width: var(--prose); font-size: 0.8rem; }
.capture-limits > summary, .error-details > summary { width: fit-content; cursor: pointer; color: var(--muted); font-size: 0.85rem; }
.capture-limits > summary:hover, .error-details > summary:hover { color: var(--accent); }
#error-message { margin-bottom: 10px; color: var(--ink); }
.error-details > pre { margin-bottom: 0; }
button, input, select { min-height: 36px; font: inherit; border-radius: 3px; border: 1px solid var(--line); }
button { padding: 7px 11px; background: var(--accent); color: var(--paper); font-weight: 700; cursor: pointer; }
button.secondary { background: transparent; color: var(--ink); }
button.danger { background: var(--link); color: var(--paper); }
button:disabled { cursor: not-allowed; opacity: 0.42; }
button:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
form { flex-basis: 100%; display: flex; gap: 10px; align-items: end; flex-wrap: wrap; padding-top: 8px; }
label { display: grid; gap: 5px; color: var(--muted); font-size: 0.85rem; }
input, select { padding: 7px 9px; background: var(--paper); color: var(--ink); }
pre { white-space: pre-wrap; overflow-wrap: anywhere; }
.result, .hex, .error pre { min-height: 72px; padding: 12px; background: color-mix(in srgb, var(--ink) 4%, var(--paper)); border-radius: 3px; font: 0.8rem/1.5 var(--font-mono); }
.hex { min-height: 220px; max-height: 420px; overflow: auto; }
.muted { color: var(--muted); }
.mono { font-family: var(--font-mono); }
.error { border-color: var(--link); }
.error h2 { color: var(--link); }
.generated-controls { display: grid; gap: 14px; }
.generated-state { display: grid; gap: 8px; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }
.operation, .state-cell { border: 1px solid var(--line); border-radius: 4px; padding: 12px; min-width: 0; }
.operation.risk-changes-state { border-top: 3px solid var(--warm); }
.operation.risk-destructive { border-top: 3px solid var(--link); background: color-mix(in srgb, var(--link) 5%, var(--paper)); }
.operation-heading { display: flex; justify-content: space-between; align-items: start; gap: 10px; }
.operation h3, .state-cell h3 { margin: 0; }
.operation-policy { display: flex; gap: 7px; align-items: center; flex-wrap: wrap; margin: 7px 0 0; color: var(--muted); }
.risk-badge { display: inline-flex; width: fit-content; padding: 2px 6px; border: 1px solid currentColor; border-radius: 999px; }
.risk-changes-state .risk-badge { color: var(--warm); }
.risk-destructive .risk-badge { color: var(--link); font-weight: 700; }
.authored-description { display: block; white-space: pre-line; }
.authored-heading { display: grid; gap: 6px; }
.authored-heading > p { margin: 0; max-width: var(--prose); }
.authored-tasks, .authored-state { display: grid; gap: 12px; margin-top: 18px; }
.authored-tasks > h2, .authored-state > h2 { margin-bottom: 0; }
.operation.risk-firmware { border-top: 3px solid var(--link); background: color-mix(in srgb, var(--link) 5%, var(--paper)); }
.risk-firmware .risk-badge { color: var(--link); font-weight: 700; }
.flag-group { margin: 0; padding: 0; border: 0; }
.flag-group > legend { padding: 0; color: var(--muted); font-size: 0.85rem; }
.flag-choices { display: flex; flex-wrap: wrap; gap: 8px; padding-top: 5px; }
.argument-field > label > input:not([type="checkbox"]), .argument-field > label > select { width: min(100%, var(--control)); }
.state-cell > h3 { font-size: 0.95rem; }
.state-cell .state-quality, .state-cell .state-value { margin: 5px 0 0; }
.operation form, .argument-fields { display: grid; gap: 8px; align-items: start; }
.operation form { padding-top: 10px; }
.argument-field { display: grid; gap: 6px; }
.boolean-value { display: inline-flex; gap: 6px; align-items: center; width: fit-content; min-height: 36px; padding: 5px 8px; border: 1px solid var(--line); border-radius: 999px; }
.boolean-value input { min-height: auto; margin: 0; }
.input-help { max-width: var(--prose); color: var(--muted); font-size: 0.8rem; }
.operation-result { margin: 10px 0 0; min-height: 36px; padding-top: 10px; border-top: 1px solid var(--line); }
.task-error { padding: 9px; background: color-mix(in srgb, var(--link) 8%, var(--paper)); color: var(--link); }
.state-value { font: 1rem var(--font-mono); }
.terminal-write label { flex: 1 1 320px; }
.terminal-write input { width: 100%; }
.terminal .hex { min-height: 100px; max-height: 240px; }
.tools > summary { cursor: pointer; color: var(--accent); font-weight: 700; text-transform: uppercase; letter-spacing: 0.12em; }
.tool-regions { display: grid; gap: 14px; padding-top: 14px; }
.tool-region + .tool-region { border-top: 1px solid var(--line); padding-top: 14px; }

@media (max-width: 840px) {
  main { width: calc(100% - 24px); }
}

@media (max-width: 680px) {
  header { align-items: flex-start; flex-direction: column; }
  .connection { grid-template-columns: 1fr; }
  .connection-fields { grid-template-columns: 1fr; }
}