:root {
  --bg: #131518;
  --panel: #1b1e22;
  --panel2: #22262b;
  --line: #30353c;
  --text: #e4e6e9;
  --muted: #8d949d;
  --accent: #f2a93b;
  --accent-ink: #1b1306;
  --sel: #f2a93b;
  --dirty: #ff6b4a;
  --ok: #4cc38a;
  --err: #ff6b6b;
  --oled: #9fd8ff;
  --t-cc: #5aa9ff;
  --t-rel: #49c6c6;
  --t-14: #b38cff;
  --t-prg: #e6c14c;
  --t-pb: #ff7fb5;
  --t-at: #ff9b5c;
  --t-note: #63d47a;
  --pad: #66b84a;
  --fh2: #d98cff;
  --mono: ui-monospace, 'SF Mono', Menlo, Consolas, monospace;
  color-scheme: dark;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #eef0f2;
    --panel: #ffffff;
    --panel2: #f4f5f7;
    --line: #d6d9de;
    --text: #1d2024;
    --muted: #69707a;
    --accent: #d9861a;
    --accent-ink: #fff;
    --sel: #d9861a;
    --oled: #0b5b8f;
    --pad: #3f8f2a;
    --fh2: #9b3fc4;
    color-scheme: light;
  }
}

* { box-sizing: border-box; }
html, body { height: 100%; margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 13px/1.35 system-ui, -apple-system, 'Segoe UI', sans-serif;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto auto;
  overflow: hidden;
}

button, select, input { font: inherit; color: inherit; }
button {
  background: var(--panel2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 5px 10px;
  cursor: pointer;
}
button:hover:not(:disabled) { border-color: var(--muted); }
button:disabled { opacity: 0.4; cursor: default; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); font-weight: 600; }
button.danger { background: var(--err); color: #200; border-color: var(--err); }
button.small { padding: 2px 8px; font-size: 12px; }
select, input[type=text], input[type=number] {
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: 4px 6px;
}
select:disabled, input:disabled { opacity: 0.45; }
input:focus-visible, select:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

/* ---- top bar */
.top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  padding: 8px 14px;
  background: var(--panel);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 7px; font-weight: 800; font-size: 17px; letter-spacing: 0.5px; }
.brand .pad { width: 20px; height: 20px; color: var(--pad); }
.brand span { font-weight: 400; font-size: 13px; color: var(--muted); margin-left: 2px; }
.top .group { display: flex; align-items: center; gap: 6px; }
.top .file { margin-left: auto; }
.chip {
  padding: 3px 9px;
  border-radius: 99px;
  background: var(--panel2);
  border: 1px solid var(--line);
  color: var(--muted);
  white-space: nowrap;
  max-width: 340px;
  overflow: hidden;
  text-overflow: ellipsis;
}
.chip.on { color: var(--ok); border-color: color-mix(in srgb, var(--ok) 50%, var(--line)); }
.chip.wait { color: var(--accent); }
body:not(.connected) .top .dev button { display: none; }

/* ---- two columns */
.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 330px;
  min-height: 0;
}
#main, #inspector { overflow: auto; min-height: 0; }
#inspector { background: var(--panel); border-left: 1px solid var(--line); padding: 12px 14px; }
#main { padding: 12px 16px 18px; }
.brand .mark { color: var(--accent); }
button.on { border-color: var(--accent); color: var(--accent); }
.dot { width: 7px; height: 7px; border-radius: 50%; background: var(--dirty); display: inline-block; margin-left: 4px; }
.devmark { color: var(--ok); font-size: 11px; margin-left: 4px; }
.mono { font-family: var(--mono); }
.hint { color: var(--muted); font-size: 12px; }
a { color: var(--accent); }

/* ---- page bar */
.pagebar { display: flex; flex-direction: column; gap: 8px; margin-bottom: 12px; max-width: 1180px; }
.tabs.pages { display: inline-flex; align-self: flex-start; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.tabs.pages button { border: 0; border-radius: 0; padding: 6px 16px; background: var(--panel2); display: flex; align-items: center; gap: 6px; }
.tabs.pages button + button { border-left: 1px solid var(--line); }
.tabs.pages button.on { background: var(--accent); color: var(--accent-ink); }
.tabs.pages button.on .devmark { color: var(--accent-ink); }
.tabs.pages .nm { font-family: var(--mono); white-space: pre; min-width: 4ch; text-align: left; }
.tabs.pages button.dirty b::after { content: '•'; color: var(--dirty); margin-left: 2px; }
.tabs.pages button.on.dirty b::after { color: var(--accent-ink); }
.pagerow { display: flex; align-items: center; gap: 8px 12px; flex-wrap: wrap; }
.pname { color: var(--muted); display: flex; align-items: center; gap: 6px; }
.pname input.name { width: 74px; }
.lbl { color: var(--muted); }
input.name { font-family: var(--mono); font-size: 15px; letter-spacing: 1px; }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: 7px; overflow: hidden; }
.seg button { border: 0; border-radius: 0; padding: 3px 10px; background: var(--panel2); color: var(--muted); }
.seg button + button { border-left: 1px solid var(--line); }
.seg button.on { background: color-mix(in srgb, var(--ok) 22%, var(--panel2)); color: var(--text); }
.sync { color: var(--muted); font-size: 12px; }
.sync.on { color: var(--fh2); }

/* ---- knobs and keys */
.knobs {
  display: grid;
  grid-template-columns: repeat(8, minmax(78px, 1fr));
  gap: 7px;
  max-width: 1180px;
}
.keys-head { display: flex; align-items: center; gap: 12px; margin: 14px 0 6px; max-width: 1180px; color: var(--muted); }
.keys-head > span:first-child { font-weight: 600; }
.keys {
  display: grid;
  grid-template-columns: repeat(16, minmax(58px, 1fr));
  gap: 5px;
  max-width: 1180px;
}
.cell {
  --tc: var(--line);
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--tc);
  border-radius: 9px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 5px 6px;
  position: relative;
  min-height: 66px;
  cursor: pointer;
  user-select: none;
  min-width: 0;
}
.cell.key { min-height: 50px; border-radius: 7px; padding: 4px 5px; }
.cell.tc0, .cell.tc1 { --tc: var(--t-rel); }
.cell.tc2 { --tc: var(--t-cc); }
.cell.tc3 { --tc: var(--t-prg); }
.cell.tc4, .cell.tc8 { --tc: var(--t-14); }
.cell.tc5 { --tc: var(--t-pb); }
.cell.tc6 { --tc: var(--t-at); }
.cell.tc7 { --tc: var(--t-note); }
.cell.tp { --tc: color-mix(in srgb, var(--accent) 60%, var(--line)); }
.cell.off { background: transparent; border-style: dashed; border-left-style: solid; }
.cell.off .sum { color: var(--muted); opacity: 0.6; }
.cell:hover { border-color: var(--muted); border-left-color: var(--tc); }
.cell.sel { border-color: var(--sel); border-left-color: var(--tc); box-shadow: 0 0 0 1px var(--sel); background: color-mix(in srgb, var(--accent) 8%, var(--panel)); }
.cell.imp { outline: 1px dashed var(--fh2); outline-offset: 2px; }
.cell.dirty::after {
  content: ''; position: absolute; top: 5px; right: 5px;
  width: 6px; height: 6px; border-radius: 50%; background: var(--dirty);
}
.cell.flash { animation: flash 0.6s ease-out; }
@keyframes flash { from { background: color-mix(in srgb, var(--ok) 50%, transparent); } }
.cell .line1 { display: flex; align-items: center; gap: 5px; padding-right: 8px; min-width: 0; }
.cell .idx { color: var(--muted); font-size: 10px; font-variant-numeric: tabular-nums; min-width: 12px; }
.cell .nm { font-family: var(--mono); font-size: 14px; font-weight: 600; white-space: pre; letter-spacing: 0.5px; }
.cell.key .nm { font-size: 12px; }
.cell .badges { margin-left: auto; display: flex; gap: 3px; align-items: center; }
.cell .sum, .cell .psum { font-size: 11px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.cell.key .sum { font-size: 10px; }
.cell .psum { color: var(--muted); }
.pico { color: var(--muted); font-size: 8px; }
.link { color: var(--accent); font-size: 11px; }
.fh2 { font-size: 9px; font-weight: 700; letter-spacing: 0.3px; padding: 0 3px; border-radius: 3px; background: color-mix(in srgb, var(--fh2) 25%, transparent); color: var(--fh2); }
.fh2.bad { background: color-mix(in srgb, var(--dirty) 25%, transparent); color: var(--dirty); }
.impnote { font-size: 12px; color: var(--fh2); margin-left: auto; display: flex; align-items: center; gap: 8px; }

/* ---- import view */
.import { max-width: 760px; }
.import h2 { margin: 2px 0 6px; font-size: 18px; }
.imp-src { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin: 12px 0; }
.imp-src select { max-width: 260px; }
.imp-what { margin: 12px 0 8px; }
.imp-list { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; }
.imp-row { display: grid; grid-template-columns: 22px 70px 60px 140px 1fr; align-items: center; gap: 8px; padding: 6px 10px; background: var(--panel); cursor: pointer; }
.imp-row + .imp-row { border-top: 1px solid var(--line); }
.imp-row.empty { color: var(--muted); }
.imp-row.on { background: color-mix(in srgb, var(--fh2) 10%, var(--panel)); }
.imp-row .nm { font-family: var(--mono); font-weight: 600; white-space: pre; }
.imp-row .what, .imp-row .to { color: var(--muted); font-size: 12px; }
.imp-actions { display: flex; align-items: center; gap: 12px; margin-top: 12px; }

/* ---- welcome */
.welcome { max-width: 560px; margin: 50px auto; text-align: center; }
.welcome h2 { font-size: 24px; margin: 8px 0 4px; letter-spacing: 0.5px; }
.welcome .lead { font-size: 14px; }
.welcome-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; margin: 20px 0; }
.hexa { display: inline-block; width: 84px; height: 84px; color: var(--accent); }
.hexa svg { width: 100%; height: 100%; }

/* ---- inspector */
.insp-title { display: flex; align-items: baseline; gap: 8px; margin-bottom: 8px; flex-wrap: wrap; }
.insp-title .big { font-size: 17px; font-weight: 700; }
.insp-title .where { color: var(--muted); }
.insp-title .acts { margin-left: auto; display: flex; gap: 4px; }
.insp-empty { color: var(--muted); padding-top: 20px; }
#inspector h3 { margin: 14px 0 2px; font-size: 12px; text-transform: uppercase; letter-spacing: 0.8px; color: var(--muted); border-top: 1px solid var(--line); padding-top: 10px; }
.fields .row { display: grid; grid-template-columns: 78px minmax(0, 1fr); align-items: center; gap: 2px 10px; padding: 3px 0; }
.row > label { color: var(--muted); }
.row .ctl { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; min-width: 0; }
.row .ctl select { max-width: 100%; min-width: 0; text-overflow: ellipsis; }
.row.disabled > label { opacity: 0.5; }
.row .note { grid-column: 2; color: var(--muted); font-size: 11px; line-height: 1.3; }
input.num { width: 76px; font-variant-numeric: tabular-nums; }
.pair { display: inline-flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.check { display: flex; align-items: center; gap: 6px; }
.warn { margin-top: 8px; padding: 6px 8px; border-radius: 6px; background: color-mix(in srgb, var(--dirty) 15%, transparent); color: var(--text); font-size: 12px; }
.syncbox .fields .row .mono { font-size: 12px; }
.syncbox > button { margin-top: 6px; }
button.danger-outline { border-color: color-mix(in srgb, var(--err) 60%, var(--line)); color: var(--err); }
details.addr { margin-top: 14px; color: var(--muted); font-size: 12px; }
details.addr summary { cursor: pointer; }
.rec { margin-top: 6px; font-size: 11px; }
.rec .chg { color: var(--dirty); }
.rec.was { opacity: 0.7; }

/* ---- status bar, log */
#status {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 5px 14px;
  background: var(--panel);
  border-top: 1px solid var(--line);
  min-height: 32px;
  font-size: 12px;
}
#status .msg { flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
#status .msg.error { color: var(--err); }
#status .msg.ok { color: var(--ok); }
#status .job { display: flex; align-items: center; gap: 8px; white-space: nowrap; }
#status progress { width: 160px; accent-color: var(--accent); }
#status .right { display: flex; flex-wrap: wrap; justify-content: flex-end; align-items: center; gap: 4px 12px; min-width: 0; }
#status .right > * { white-space: nowrap; }
.pend.has { color: var(--dirty); }
.devstate { color: var(--ok); }
.tog { display: inline-flex; align-items: center; gap: 4px; color: var(--muted); cursor: pointer; }
#log {
  margin: 0;
  max-height: 180px;
  overflow: auto;
  padding: 6px 14px;
  background: var(--bg);
  border-top: 1px solid var(--line);
  font: 11px/1.4 var(--mono);
  color: var(--muted);
}

/* ---- demo panel */
#mockpanel { background: var(--panel2); border-top: 1px solid var(--line); padding: 8px 14px 10px; }
.mock-head { margin-bottom: 6px; }
.mock-body { display: flex; gap: 20px; align-items: flex-start; flex-wrap: wrap; }
.mock-unit { display: flex; flex-direction: column; gap: 8px; }
.oled {
  background: #000; color: #e8eef5; font: 12px/1.35 var(--mono);
  padding: 6px 10px; border-radius: 4px; border: 1px solid #333; white-space: pre; min-width: 250px;
}
.oled .otop { color: #9fd8ff; }
.mock-keys { display: flex; gap: 5px; flex-wrap: wrap; }
.mock-surface { display: flex; flex-direction: column; gap: 6px; }
.mkeys { display: grid; grid-template-columns: repeat(16, 30px); gap: 3px; }
.mkey { padding: 2px 0; font: 9px var(--mono); border-radius: 4px; overflow: hidden; white-space: nowrap; }
.mkey.edited, .mk.edited span { color: var(--accent); }
.mknobs { display: grid; grid-template-columns: repeat(8, 40px); gap: 3px 22px; }
.mk { display: flex; flex-direction: column; align-items: center; gap: 1px; }
.mk span { font: 9px var(--mono); color: var(--muted); white-space: pre; }
.mknob {
  width: 26px; height: 26px; border-radius: 50%;
  background: #2b2f35; border: 1px solid #444;
  cursor: ns-resize; touch-action: none; user-select: none;
  display: grid; place-items: center;
}
.mknob:active { border-color: var(--accent); }
.mknob .cap { width: 18px; height: 18px; border-radius: 50%; background: #3a3f46; position: relative; }
.mknob .cap::after { content: ''; position: absolute; left: 8px; top: 1px; width: 2px; height: 6px; background: #ddd; border-radius: 1px; }
.mock-opts { display: flex; flex-direction: column; gap: 6px; }
.faults { display: flex; flex-wrap: wrap; gap: 4px 12px; align-items: center; }
.mock-btns { display: flex; gap: 6px; }

/* ---- dialog */
dialog { border: 1px solid var(--line); border-radius: 10px; background: var(--panel); color: var(--text); padding: 0; max-width: 480px; }
dialog::backdrop { background: rgb(0 0 0 / 45%); }

@media (max-width: 1250px) {
  .keys { grid-template-columns: repeat(8, minmax(58px, 1fr)); }
}
@media (max-width: 1100px) {
  .layout { grid-template-columns: minmax(0, 1fr) 290px; }
  .knobs { grid-template-columns: repeat(8, minmax(64px, 1fr)); }
  .cell .nm { font-size: 12px; }
  .cell .sum, .cell .psum { font-size: 10px; }
}
@media (max-height: 760px) {
  #mockpanel { max-height: 40vh; overflow: auto; }
}