:root {
  --bg: #090d0e;
  --panel: #111719;
  --panel-2: #151d1f;
  --line: #283336;
  --line-strong: #3c4b4f;
  --text: #e7eeee;
  --muted: #8f9da0;
  --green: #65f5aa;
  --green-dim: #173e2d;
  --amber: #ffc766;
  --amber-dim: #44331c;
  --red: #ff786f;
  --red-dim: #3d201f;
  --blue: #87bbff;
  --shadow: 0 18px 60px rgb(0 0 0 / 32%);
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
html { min-width: 320px; background: var(--bg); color: var(--text); font-family: var(--sans); }
body { margin: 0; min-height: 100vh; background: radial-gradient(circle at 72% -20%, #17312d 0, transparent 34rem), var(--bg); }
button, input, select { font: inherit; }
button, select, input { border: 1px solid var(--line-strong); border-radius: 4px; background: #101719; color: var(--text); }
button { min-height: 34px; padding: 0 13px; font: 700 11px/1 var(--mono); letter-spacing: .055em; cursor: pointer; }
button:hover:not(:disabled) { border-color: var(--green); color: var(--green); background: #13211d; }
button:focus-visible, input:focus-visible, select:focus-visible, a:focus-visible { outline: 2px solid var(--green); outline-offset: 2px; }
button:disabled { cursor: not-allowed; opacity: .42; }
button.primary { color: #07100c; border-color: var(--green); background: var(--green); }
button.primary:hover:not(:disabled) { color: #07100c; background: #8fffc4; }
button.danger { color: var(--red); border-color: #6d3733; background: var(--red-dim); }
input, select { width: 100%; min-height: 38px; padding: 0 11px; }
label { display: grid; gap: 7px; color: var(--muted); font: 700 10px/1.2 var(--mono); letter-spacing: .08em; }
code, pre { font-family: var(--mono); }
h1, h2, p { margin-top: 0; }
h1 { margin-bottom: 10px; font-size: clamp(20px, 2.2vw, 30px); letter-spacing: -.025em; }
h2 { margin-bottom: 8px; font-size: 17px; }
p { color: #b5c0c2; line-height: 1.55; }
small, .eyebrow { color: var(--muted); font: 700 9px/1.2 var(--mono); letter-spacing: .105em; }
.eyebrow { margin: 0 0 7px; color: var(--green); }
.skip-link { position: fixed; left: 12px; top: -60px; z-index: 100; padding: 10px; color: #07100c; background: var(--green); }
.skip-link:focus { top: 12px; }
[hidden] { display: none !important; }

.topbar { position: sticky; z-index: 20; top: 0; display: grid; grid-template-columns: 260px 1fr auto; min-height: 66px; border-bottom: 1px solid var(--line); background: rgb(9 13 14 / 94%); backdrop-filter: blur(16px); }
.brand { display: flex; align-items: center; gap: 11px; padding: 0 16px; border-right: 1px solid var(--line); }
.brand-mark { display: grid; width: 35px; height: 35px; place-items: center; border: 1px solid var(--green); color: var(--green); font: 800 13px var(--mono); box-shadow: inset 0 0 20px rgb(101 245 170 / 12%); }
.brand > span:last-child { display: grid; gap: 3px; }
.brand strong { letter-spacing: .1em; }
.brand small { font-size: 8px; }
.connection-strip { display: flex; min-width: 0; }
.connection-strip > span { display: grid; min-width: 145px; align-content: center; gap: 5px; padding: 0 16px; border-right: 1px solid var(--line); }
.connection-strip b { overflow: hidden; font: 700 10px var(--mono); text-overflow: ellipsis; white-space: nowrap; }
.status-dot { display: inline-block; width: 7px; height: 7px; margin-right: 7px; border-radius: 50%; background: #526063; }
.status-dot.live { background: var(--green); box-shadow: 0 0 11px var(--green); }
.top-actions { display: flex; align-items: center; gap: 8px; padding: 0 12px; }
.sim-banner { display: flex; position: sticky; z-index: 15; top: 66px; min-height: 43px; align-items: center; gap: 16px; padding: 5px 17px; color: #0b170f; background: var(--green); font: 700 11px var(--mono); }
.sim-banner span { flex: 1; }
.sim-banner label { display: flex; align-items: center; gap: 8px; color: #0b170f; }
.sim-banner select { width: auto; min-height: 29px; color: #0b170f; border-color: #1d6f4b; background: #d9ffea; }

.app-grid { display: grid; grid-template-columns: 220px minmax(0, 1fr) 260px; min-height: calc(100vh - 98px); }
.sidebar, .inspector { position: sticky; top: 66px; align-self: start; height: calc(100vh - 98px); overflow: auto; background: rgb(12 17 18 / 92%); }
.sidebar { border-right: 1px solid var(--line); }
.mode-switch { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 11px; border-bottom: 1px solid var(--line); }
.mode-switch button.active { color: #06100c; border-color: var(--green); background: var(--green); }
#navigation { display: grid; padding: 10px; gap: 3px; }
.nav-item { display: grid; grid-template-columns: 30px 1fr auto; width: 100%; min-height: 39px; align-items: center; padding: 0 9px; text-align: left; border-color: transparent; background: transparent; }
.nav-item > span { color: #5c6b6e; }
.nav-item > b { color: var(--amber); }
.nav-item.active { color: var(--green); border-color: #28573f; background: var(--green-dim); }
.local-note { margin: 10px; padding: 13px; border: 1px solid var(--line); background: #0e1415; }
.local-note b { color: var(--green); font: 700 10px var(--mono); }
.local-note p { margin: 6px 0 0; font-size: 11px; }

.workspace { min-width: 0; padding: 0 20px 34px; }
.workspace-header { display: flex; min-height: 74px; align-items: center; justify-content: space-between; border-bottom: 1px solid var(--line); }
.workspace-header > span:first-child { display: grid; gap: 5px; }
.workspace-header strong { font-size: 23px; letter-spacing: -.02em; }
.panel-view { display: none; padding: 18px 0; animation: appear .18s ease-out; }
.panel-view.active { display: grid; gap: 14px; }
@keyframes appear { from { opacity: .2; transform: translateY(4px); } }
.module { padding: 17px; border: 1px solid var(--line); background: linear-gradient(145deg, rgb(21 29 31 / 96%), rgb(15 21 22 / 96%)); box-shadow: 0 12px 40px rgb(0 0 0 / 12%); }
.module-head, .tool-intro { display: flex; align-items: start; justify-content: space-between; gap: 16px; }
.module-head h2 { margin-bottom: 0; }
.tool-intro > span:first-child { max-width: 760px; }
.tool-intro p { margin-bottom: 0; }
.connection-card { display: grid; grid-template-columns: 210px 1fr; align-items: center; min-height: 210px; border-color: #2d5b46; }
.connection-card p { max-width: 780px; }
.connector { display: flex; align-items: center; justify-content: center; color: var(--green); font: 800 12px var(--mono); }
.connector span { display: grid; width: 62px; height: 62px; place-items: center; border: 1px solid var(--green); background: #0b1713; }
.connector i { width: 45px; height: 1px; background: var(--green); box-shadow: 0 0 12px var(--green); }
.metric-grid, .protocol-grid, .firmware-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.metric-grid article, .protocol-grid article, .firmware-grid article { display: grid; min-height: 78px; align-content: space-between; padding: 13px; border: 1px solid var(--line); background: #0f1516; }
.metric-grid strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.protocol-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.protocol-grid strong { color: var(--green); font: 700 10px var(--mono); }
.firmware-grid strong { font: 700 11px var(--mono); }
.amber-text { color: var(--amber); }

.pill { display: inline-flex; min-height: 24px; align-items: center; justify-content: center; padding: 0 8px; color: #bac5c7; border: 1px solid var(--line-strong); border-radius: 99px; background: #131b1d; font: 700 9px var(--mono); letter-spacing: .06em; white-space: nowrap; }
.pill.green { color: var(--green); border-color: #2b6a4b; background: var(--green-dim); }
.pill.amber { color: var(--amber); border-color: #785d2c; background: var(--amber-dim); }
.pill.red { color: var(--red); border-color: #6d3733; background: var(--red-dim); }
.table-wrap { overflow: auto; }
table { width: 100%; border-collapse: collapse; font-size: 12px; }
th { padding: 10px; color: var(--muted); text-align: left; border-bottom: 1px solid var(--line-strong); font: 700 9px var(--mono); letter-spacing: .08em; }
td { padding: 10px; color: #c8d1d2; border-bottom: 1px solid #232d2f; }
tbody tr:hover { background: rgb(101 245 170 / 4%); }
.led-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin-top: 14px; }
.led-card { padding: 13px; border: 1px solid var(--line); background: #0e1415; }
.led-card header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.led-card header i { width: 12px; height: 12px; border-radius: 50%; background: #455154; }
.led-card.on header i { background: var(--green); box-shadow: 0 0 16px var(--green); }
.led-card .button-row { grid-template-columns: repeat(3, 1fr); }
.led-card button { padding: 0 4px; }
.maker-module { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.maker-module .description-box, .maker-module .result-box, .maker-module .button-row { grid-column: 1 / -1; }
.description-box, .result-box { padding: 13px; color: #b9c4c6; border: 1px solid var(--line); background: #0c1213; line-height: 1.5; }
.result-box { display: grid; gap: 7px; margin-top: 14px; }
.result-box strong { overflow-wrap: anywhere; }
.result-box code { color: var(--green); overflow-wrap: anywhere; }
.button-row { display: grid; grid-auto-flow: column; grid-auto-columns: max-content; gap: 7px; }
.queue-list { display: grid; gap: 7px; margin-top: 13px; }
.queue-item { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 10px; padding: 9px; border: 1px solid var(--line); }
.empty { margin: 0; color: var(--muted); }
.frame-dump { min-height: 66px; margin: 13px 0 0; padding: 13px; overflow: auto; color: var(--green); border: 1px solid var(--line); background: #07100d; font-size: 11px; line-height: 1.6; white-space: pre-wrap; overflow-wrap: anywhere; }
.rpc-grid, .records-grid { display: grid; grid-template-columns: minmax(250px, .7fr) minmax(0, 1.3fr); gap: 14px; }
.rpc-grid .module { display: grid; align-content: start; gap: 12px; }
.signature-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.signature-grid span { display: grid; gap: 6px; padding: 11px; border: 1px solid var(--line); background: #0d1314; }
.signature-grid code { color: var(--green); }
.locked-capability { display: grid; grid-template-columns: 90px 1fr; align-items: center; min-height: 280px; }
.locked-capability > span { color: var(--amber); font-size: 46px; text-align: center; }
.records-grid label { margin-top: 12px; }
.preset-list { display: grid; gap: 8px; }
.preset-item { display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 8px; padding: 11px; border: 1px solid var(--line); background: #0d1314; }
.preset-item span { display: grid; gap: 4px; }
.preset-item small { overflow-wrap: anywhere; }
.warning { border-color: #69512a !important; background: linear-gradient(145deg, rgb(50 39 20 / 75%), rgb(22 20 15 / 95%)) !important; }
ol { color: #c1cbcc; line-height: 1.8; }

.inspector { border-left: 1px solid var(--line); }
.inspector header, .inspector section { padding: 14px; border-bottom: 1px solid var(--line); }
.inspector header { display: flex; align-items: center; justify-content: space-between; font: 700 10px var(--mono); }
.inspector h2 { margin: 7px 0 0; }
.inspector dl { margin: 9px 0 0; }
.inspector dl div { display: flex; justify-content: space-between; gap: 12px; padding: 7px 0; border-bottom: 1px solid #222c2e; }
.inspector dt { color: var(--muted); font-size: 11px; }
.inspector dd { margin: 0; font: 700 10px var(--mono); }
.inspector code { display: block; max-height: 130px; margin-top: 8px; overflow: hidden; color: var(--green); font-size: 9px; overflow-wrap: anywhere; }
.inspector p { margin-bottom: 0; font-size: 11px; }

.statusbar { position: sticky; z-index: 25; bottom: 0; display: flex; min-height: 32px; align-items: center; gap: 20px; padding: 0 12px; border-top: 1px solid var(--line); background: #090d0e; color: var(--muted); font: 700 9px var(--mono); }
.statusbar b { color: var(--text); }
.statusbar .grow { flex: 1; }
.save-dot { display: inline-block; width: 7px; height: 7px; margin-right: 5px; border-radius: 50%; background: var(--green); }
.save-dot.saving { background: var(--amber); }
.save-dot.error { background: var(--red); }

dialog { width: min(720px, calc(100vw - 24px)); color: var(--text); border: 1px solid var(--line-strong); border-radius: 6px; background: var(--panel); box-shadow: var(--shadow); }
dialog::backdrop { background: rgb(2 5 6 / 78%); backdrop-filter: blur(4px); }
.dialog-card { display: grid; gap: 14px; }
.preflight { display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; }
.preflight span { display: grid; gap: 6px; padding: 12px; border: 1px solid var(--line); background: #0d1314; }
.preflight b { font: 700 10px var(--mono); }
.check { display: flex; align-items: center; gap: 8px; }
.check input { width: 16px; min-height: 16px; }
.dialog-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.toast { position: fixed; z-index: 60; right: 18px; bottom: 50px; max-width: 420px; padding: 13px 16px; color: #06100c; border: 1px solid var(--green); border-radius: 4px; background: var(--green); box-shadow: var(--shadow); font: 700 11px/1.5 var(--mono); }

body.easy .advanced-only { display: none; }
@media (max-width: 1180px) {
  .app-grid { grid-template-columns: 205px minmax(0, 1fr); }
  .inspector { display: none; }
  .connection-strip .wide-only { display: none; }
}
@media (max-width: 820px) {
  .topbar { grid-template-columns: 1fr auto; }
  .connection-strip { display: none; }
  .top-actions .danger { display: none; }
  .app-grid { display: block; }
  .sidebar { position: static; width: 100%; height: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .sidebar nav { grid-template-columns: repeat(2, 1fr); }
  .local-note { display: none; }
  .workspace { padding-inline: 12px; }
  .connection-card { grid-template-columns: 1fr; gap: 18px; }
  .connector { justify-content: start; }
  .metric-grid, .firmware-grid { grid-template-columns: repeat(2, 1fr); }
  .protocol-grid, .led-grid { grid-template-columns: repeat(2, 1fr); }
  .rpc-grid, .records-grid { grid-template-columns: 1fr; }
  .statusbar span:nth-child(n+3):not(.grow):not(:last-child) { display: none; }
  .sim-banner { top: 66px; flex-wrap: wrap; }
}
@media (max-width: 520px) {
  .top-actions { padding-left: 0; }
  .top-actions button { padding-inline: 8px; }
  .brand { border-right: 0; }
  .brand small { display: none; }
  .workspace-header { min-height: 62px; }
  .metric-grid, .protocol-grid, .firmware-grid, .led-grid, .preflight, .dialog-actions, .maker-module, .signature-grid { grid-template-columns: 1fr; }
  .maker-module .description-box, .maker-module .result-box, .maker-module .button-row { grid-column: auto; }
  .module-head, .tool-intro { align-items: stretch; flex-direction: column; }
  .button-row { grid-auto-flow: row; grid-auto-columns: 1fr; }
}