/* Palette and theme tokens. Dark is the default; the light set below is switched in by
   data-theme on <html>. */
:root {
  --bg: #0A0C10; --card: #111420; --line: #1C2035; --text: #E4EDF6; --label: #C6D2E2;
  --muted: #8A93A8; --accent: #B8F020; --value: #BCEB39; --good: #1EE89A; --bad: #FF5050;
  --warn: #FFAA18; --gps: #3DB8FF; --mono: ui-monospace, Consolas, monospace;
  --scroll: #2B3350; --field: #0d1018; --chip: #171b2a; --on-accent: #0A0C10;
  color-scheme: dark;
  --warn-bg: #FFAA1814; --warn-line: #FFAA1840; --warn-strong: #ffc65a;
  --bad-bg: #FF505014; --bad-line: #FF505040; --bad-strong: #ff8080;
  --bad-line-soft: #3a2030; --warn-line-soft: #3a3020;
  --backdrop: rgba(0,0,0,.72); --shadow: rgba(0,0,0,.5);
  --tx: #6cb6ff; --rx: #e0b25a;
  --border: var(--line); --danger: var(--bad); --dim: var(--muted);   /* aliases for the ported EEPROM viewer */
}
[data-theme="light"] {
  --bg: #E8EDF5; --card: #FFFFFF; --line: #CDD5E4; --text: #0A0D18; --label: #0A0D18;
  --muted: #4A5468;
  --accent: #2A6A00; --value: #2A6A00; --good: #1B7A4B; --bad: #CC2020;
  --warn: #A05800; --gps: #005AA0;
  --scroll: #B6C0D4; --field: #FFFFFF; --chip: #F1F4FA; --on-accent: #FFFFFF;
  color-scheme: light;
  --warn-bg: #A0580014; --warn-line: #A0580040; --warn-strong: #7A4300; --bad-strong: #A01818;
  --bad-line-soft: #E0B4B4; --warn-line-soft: #E0CBA4;
  --backdrop: rgba(10,13,24,.45); --shadow: rgba(10,13,24,.18);
  --tx: #0b6bcb; --rx: #8a5a00;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }

/* Cross-browser scrollbars: thin styled bar in Firefox, and a webkit fallback for Chrome/Safari/Edge. */
* { scrollbar-width: thin; scrollbar-color: var(--scroll) transparent; }
@supports not (scrollbar-width: thin) {
  ::-webkit-scrollbar { width: 11px; height: 11px; }
  ::-webkit-scrollbar-track { background: transparent; }
  ::-webkit-scrollbar-thumb {
    background: var(--scroll); border-radius: 11px;
    border: 3px solid transparent; background-clip: content-box;
  }
  ::-webkit-scrollbar-thumb:hover { background: var(--muted); background-clip: content-box; }
  ::-webkit-scrollbar-corner { background: transparent; }
}
body {
  margin: 0; background: var(--bg); color: var(--text);
  font-family: -apple-system, "Segoe UI", Roboto, sans-serif; line-height: 1.45;
  padding: max(14px, env(safe-area-inset-top)) 14px 40px;
}
.wrap { max-width: 520px; margin: 0 auto; display: flex; flex-direction: column; gap: 14px; }
/* Card containers span the same 14px rhythm as .wrap so step/banner cards aren't flush. */
#steps { display: flex; flex-direction: column; gap: 14px; }
#intro-banner:empty { display: none; }
/* Intro paragraphs sit in a wrapper, so give them the card's 12px rhythm; extra air before the warn box. */
#intro-body { display: flex; flex-direction: column; gap: 12px; }
#intro-body .warn { margin-top: 6px; }
header { display: flex; flex-direction: column; align-items: stretch; gap: 8px; }
h1 { font-size: 17px; margin: 0; letter-spacing: .01em; line-height: 1.2; }
h1 span { color: var(--accent); }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px;
  display: flex; flex-direction: column; gap: 12px; }
.card h2 { font-size: 11px; letter-spacing: .1em; text-transform: uppercase; color: var(--muted);
  margin: 0; font-weight: 700; }
.sep { border: 0; border-top: 1px solid var(--line); margin: 4px 0 2px; width: 100%; }
.btns { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.btns button { width: 100%; }
.span2 { grid-column: 1 / -1; }
button {
  appearance: none; border: 1px solid var(--line); background: var(--chip); color: var(--text);
  padding: 12px 14px; border-radius: 10px; font-size: 15px; font-weight: 600; cursor: pointer;
  flex: 1 1 auto; text-align: center; text-decoration: none; display: inline-block;
}
button:active { transform: translateY(1px); }
button:hover:not(:disabled) { border-color: var(--accent); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
/* Disabled primary buttons go dark instead of glowing accent (matches the locked flash button). */
button.primary:disabled { background: var(--chip); border-color: var(--line); color: var(--muted); }
input, select {
  background: var(--field); color: var(--text); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 12px; font-size: 15px; font-family: var(--mono); min-width: 0; flex: 1 1 90px;
}
input:focus, select:focus { outline: none; border-color: var(--accent); }
input:disabled, select:disabled, button:disabled { opacity: .45; cursor: not-allowed; }
label { color: var(--label); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }

/* rows: a label on its own line, then the field(s). */
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.row label.full, label.full { flex-basis: 100%; width: 100%; }
.row label input[type="checkbox"] { flex: 0 0 auto; margin-right: 6px; }
.row > label { text-transform: none; letter-spacing: 0; color: var(--muted); font-size: 12px; display: flex; align-items: center; }
.fin { color: var(--muted); font-size: 12px; }
details { margin: 0; }
summary { cursor: pointer; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
details[open] > summary { margin-bottom: 10px; }
details > .row, details > .hint { margin-top: 10px; }

.head-right { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.head-tools { display: flex; align-items: center; gap: 8px; }
.langs { display: flex; gap: 4px; }
.langs button { flex: 0 0 auto; padding: 4px 7px; font-family: var(--mono); font-size: 11px;
  font-weight: 700; letter-spacing: .06em; background: transparent; color: var(--muted);
  border-radius: 6px; }
.langs button[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.theme-btn { flex: 0 0 auto; width: 28px; height: 24px; padding: 0; line-height: 1;
  background: transparent; border-color: var(--line); color: var(--label); font-size: 14px; }
.theme-btn:hover { color: var(--accent); }

.status { font-family: var(--mono); font-size: 13px; padding: 3px 9px; border-radius: 999px;
  background: var(--chip); color: var(--muted); border: 1px solid var(--line); }
.status[data-state="connected"] { color: var(--accent); border-color: var(--accent); }
.status[data-state="connecting"] { color: var(--warn); border-color: var(--warn-line-soft); }
.status[data-state="error"] { color: var(--bad); border-color: var(--bad-line-soft); }
.status[data-state="disconnected"] { color: var(--muted); }

.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.tile { background: var(--field); border: 1px solid var(--line); border-radius: 10px; padding: 12px; text-align: center; }
.tile b { display: block; font-family: var(--mono); font-size: 22px; font-weight: 700; color: var(--value); }
.tile small { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .06em; }
.hint { color: var(--muted); font-size: 12px; margin: 0; }
.hint a, .warn a { color: var(--accent); }
.warn { color: var(--warn); font-size: 12px; background: var(--warn-bg); border: 1px solid var(--warn-line);
  border-radius: 8px; padding: 9px 11px; margin: 0; }
.warn b { color: var(--warn-strong); }
.foot { margin-top: 2rem; padding-top: 14px; border-top: 1px solid var(--line);
  color: var(--label); font-size: 12px;
  display: flex; flex-direction: column; align-items: center; gap: 10px; }
.foot-links, .footlinks { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px 16px; }
.foot a { color: var(--accent); font-size: 12px; text-decoration: none; }
.foot a:hover { text-decoration: underline; }
.foot .ver { color: var(--muted); font-size: 12px; white-space: nowrap; }
code { font-family: var(--mono); font-size: 12px; background: var(--field); border: 1px solid var(--line);
  border-radius: 5px; padding: 1px 5px; color: var(--value); word-break: break-all; }

/* Document viewer. Only the open dialog is a flex column; margin:auto centers it. */
dialog { border: 1px solid var(--line); border-radius: 12px; background: var(--card); margin: auto;
  color: var(--text); max-width: 44rem; width: calc(100% - 2rem); padding: 0; }
dialog::backdrop { background: var(--backdrop); }
#doc, #help, #ee { max-height: 88vh; overflow: hidden; }
#doc[open], #help[open], #ee[open] { display: flex; flex-direction: column; }
.doc-head { display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 14px 16px; border-bottom: 1px solid var(--line); }
.doc-head h3 { margin: 0; font-size: 15px; color: var(--text); }
#doc-x, #help-x { flex: 0 0 auto; background: none; border: 0; color: var(--label); font-size: 22px;
  line-height: 1; padding: 0 4px; cursor: pointer; }
#doc-x:hover, #help-x:hover { color: var(--accent); }
.doc-body { padding: 14px 16px; overflow-y: auto; overscroll-behavior: contain;
  color: var(--label); font-size: 13.5px; }
.doc-body > :first-child { margin-top: 0; }
.doc-body h1 { font-size: 16px; color: var(--text); margin: 0 0 12px; }
.doc-body h2 { font-size: 14px; color: var(--accent); margin: 22px 0 8px; text-transform: none; letter-spacing: 0; }
.doc-body h3, .doc-body h4 { font-size: 13.5px; color: var(--text); margin: 16px 0 6px; }
.doc-body p { margin: 0 0 11px; }
.doc-body ul, .doc-body ol { margin: 0 0 12px; padding-left: 18px; }
.doc-body li { margin-bottom: 5px; }
.doc-body b { color: var(--text); }
.doc-body ul.nested { margin: 6px 0 2px; padding-left: 16px; }
.doc-body ul.nested li { margin-bottom: 3px; }
.doc-body a { color: var(--accent); }
.doc-body code { font-family: var(--mono); font-size: .88em; background: var(--field);
  border: 1px solid var(--line); border-radius: 4px; padding: 1px 4px; }
.doc-body pre { background: var(--field); border: 1px solid var(--line); border-radius: 8px;
  padding: 10px 12px; margin: 0 0 12px; overflow-x: auto; }
.doc-body pre code { border: 0; background: none; padding: 0; font-size: 12px; line-height: 1.6; }
.doc-body hr { border: 0; border-top: 1px solid var(--line); margin: 18px 0; }
.doc-body blockquote { margin: 0 0 12px; padding-left: 11px; color: var(--muted);
  border-left: 2px solid var(--line); }
.doc-table { overflow-x: auto; margin: 0 0 12px; }
.doc-body table { border-collapse: collapse; width: 100%; font-size: 12.5px; }
.doc-body th, .doc-body td { border: 1px solid var(--line); padding: 7px 9px; text-align: left;
  vertical-align: top; }
.doc-body th { color: var(--text); background: var(--field); }
.doc-foot { display: flex; justify-content: center; padding: 14px 16px;
  border-top: 1px solid var(--line); }
.doc-foot button { flex: 0 0 auto; padding: 10px 22px; }

/* Help "?" icon in a card header, opens a modal with the explanation. */
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.help-btn { flex: 0 0 auto; width: 22px; height: 22px; min-width: 22px; padding: 0; border-radius: 50%;
  font-size: 13px; font-weight: 700; line-height: 1; background: var(--chip); border: 1px solid var(--line);
  color: var(--muted); cursor: pointer; }
.help-btn:hover { color: var(--accent); border-color: var(--accent); }
#help { max-width: 520px; }
#help #help-body { margin: 0; }

/* No spinner arrows on number inputs (Firefox, Chrome/Safari/Edge). */
input[type="number"] { -moz-appearance: textfield; appearance: textfield; }
input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }

/* ---------- firmware tool: upload, download list, flash progress and log ---------- */

/* File upload row: a dashed field styled to match the theme, no browser-default control. */
input[type="file"] {
  width: 100%; color: var(--muted); font-size: 13px; font-family: var(--mono); flex: 1 1 100%;
  background: var(--field); border: 1px dashed var(--line); border-radius: 10px; padding: 12px;
}
input[type="file"]::file-selector-button {
  appearance: none; background: var(--chip); color: var(--text); border: 1px solid var(--line);
  border-radius: 8px; padding: 8px 12px; margin-right: 12px; font-weight: 600; cursor: pointer;
}
input[type="file"]::file-selector-button:hover { border-color: var(--accent); }

/* Key/value lines in the connect, download and flash cards. */
.fw-file { font-size: 12px; color: var(--muted); }
.res-k { color: var(--muted); }
.mono { font-family: var(--mono); }
#con-model, #dl-model, #flash-file, #res-model, #res-patches { color: var(--value); }

.result { display: flex; flex-direction: column; gap: 10px; border-top: 1px solid var(--line); padding-top: 12px; }
.res-line { font-size: 13px; }
.err { color: var(--bad); font-size: 12px; font-weight: 600; margin: 0;
  background: var(--bad-bg); border: 1px solid var(--bad-line); border-radius: 8px; padding: 9px 11px; }
.danger { color: var(--bad); font-size: 13px; font-weight: 700; margin: 0;
  background: var(--bad-bg); border: 1px solid var(--bad); border-radius: 8px; padding: 10px 12px; }

/* Download list: one row per firmware component. */
#dl-files { display: flex; flex-direction: column; }
.dl-file { display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 12px 0; border-top: 1px solid var(--line); }
.dl-file:first-child { border-top: 0; }
.dl-file-info { min-width: 0; }
.dl-file-label { font-size: 14px; color: var(--text); font-weight: 600; }
.dl-file-meta { font-size: 11.5px; color: var(--muted); margin-top: 3px; word-break: break-all; font-family: var(--mono); }
.dl-file button { flex: 0 0 auto; padding: 8px 14px; font-size: 13px; }
#dl-variant-btns button.sel { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }

/* Consent checkbox row. */
.consent-row { display: flex; align-items: flex-start; gap: 10px; color: var(--label);
  font-size: 13px; text-transform: none; letter-spacing: 0; cursor: pointer; }
.consent-row input[type="checkbox"] { flex: 0 0 auto; margin-top: 2px; width: 16px; height: 16px; accent-color: var(--accent); cursor: pointer; }

/* Flash progress bar. */
.fw-bar { height: 10px; background: var(--field); border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
#flash-bar { height: 100%; width: 0; background: var(--accent); transition: width .2s ease; }
.prog-line { display: flex; align-items: baseline; gap: 10px; font-size: 12px; }
#flash-pct { color: var(--text); font-weight: 700; }
#flash-phase { color: var(--muted); }

/* Protocol log: full BLE wire activity (TX/RX) plus status messages. */
pre#log { margin: 0; background: var(--field); border: 1px solid var(--line); border-radius: 8px; padding: 10px;
  font-family: var(--mono); font-size: 11.5px; color: var(--muted); max-height: 220px; overflow: auto;
  white-space: pre-wrap; word-break: break-word; overscroll-behavior: contain; }
.log-tx { color: var(--tx); }
.log-rx { color: var(--rx); }
.log-ok { color: var(--good); }
.log-err { color: var(--bad); }

/* ---------- guided step cards (numbered flow: connect -> download -> patch -> flash) ---------- */
.step > h2[data-step], .step > .card-head[data-step] { position: relative; padding-left: 34px; }
.step > h2[data-step] { display: flex; align-items: center; min-height: 24px; }
h2[data-step]::before, .card-head[data-step]::before {
  content: attr(data-step);
  position: absolute; left: 0; top: 50%; transform: translateY(-50%);
  width: 24px; height: 24px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 700; letter-spacing: 0;
  background: var(--chip); color: var(--muted); border: 1px solid var(--line);
}
.step[data-state="pending"] { opacity: .5; }
.step[data-state="active"] { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; }
.step[data-state="active"] > h2[data-step]::before, .step[data-state="active"] > .card-head[data-step]::before {
  background: var(--accent); color: var(--on-accent); border-color: var(--accent);
}
.step[data-state="done"] > h2[data-step]::before, .step[data-state="done"] > .card-head[data-step]::before {
  background: var(--good); color: var(--on-accent); border-color: var(--good);
}

/* ---------- Teverun EEPROM viewer (ported from tr-fw) ---------- */
.ee-status { margin: 0 0 .8rem; padding-left: .7rem; font-size: .88rem; line-height: 1.55;
  min-height: calc(2 * 1.55em); color: var(--label); border-left: 3px solid var(--border); }
.ee-status.ok { border-left-color: var(--good); color: var(--text); }
.ee-status.wait, .ee-status.warn { border-left-color: var(--warn); }
.ee-status.bad { border-left-color: var(--danger); }

.ee-sec { margin: 1.35rem 0 .5rem; }
.ee-sec-head { display: flex; align-items: center; gap: .4rem; }
.ee-sec-title { margin: 0; font: 600 .72rem/1.5 var(--mono); letter-spacing: .1em;
  text-transform: uppercase; color: var(--dim); }
.ee-sec .ee-note { margin: .45rem 0 0; }

.ee-help { flex: 0 0 auto; width: 1.15rem; height: 1.15rem; margin-left: .35rem; padding: 0;
  border: 1px solid var(--border); border-radius: 50%; background: transparent;
  color: var(--muted); font: 700 .68rem/1 var(--mono); cursor: pointer; vertical-align: middle; }
.ee-help:hover { color: var(--accent); border-color: var(--accent); }
.ee-help:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.ee-help[aria-expanded="true"] { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }

.ee-tab-wrap { overflow-x: auto; }
.ee-table { border-collapse: collapse; width: 100%; font-size: .82rem; }
.ee-table th, .ee-table td { border: 1px solid var(--border); padding: .3rem .5rem; text-align: right; white-space: nowrap; }
.ee-table thead th { background: var(--field); font: 600 .66rem/1.5 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--dim); }
.ee-table thead th.ee-tab-corner { text-align: left; }
.ee-table thead th.ee-tab-gear { white-space: nowrap; }
.ee-table thead th.ee-gear-now { color: var(--accent); }
.ee-table td.ee-gear-now { background: var(--field); }
.ee-table tbody th.ee-tab-field { text-align: left; white-space: normal; font: inherit; font-size: .82rem; font-weight: 600; color: var(--label); background: none; }
.ee-table td.ee-tab-cell { font: .82rem/1.5 var(--mono); font-variant-numeric: tabular-nums; white-space: normal; }
.ee-table .ee-tab-live, .ee-table .ee-tab-ref { white-space: nowrap; }
.ee-table .ee-tab-ref { margin-left: .3rem; color: var(--muted); }
.ee-table .ee-tab-panel-row td { border: none; padding: 0; white-space: normal; text-align: left; }
.ee-table .ee-tab-panel-row .ee-note { margin: 0 0 .5rem; }

.ee-list { display: flex; flex-direction: column; }
.ee-row { display: grid; grid-template-columns: 1fr 7rem 5.5rem; gap: .4rem; align-items: baseline; padding: .35rem 0; border-bottom: 1px solid var(--border); }
.ee-label { font-size: .86rem; color: var(--label); }
.ee-val, .ee-ref { font: .86rem/1.5 var(--mono); font-variant-numeric: tabular-nums; text-align: right; }
.ee-ref { color: var(--muted); }
.ee-head-row .ee-val, .ee-head-row .ee-ref { font: 600 .68rem/1.5 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--dim); }
.ee-dim .ee-label, .ee-dim .ee-val, .ee-dim .ee-ref { color: var(--dim); }
.ee-note { margin: .4rem 0 .7rem; font-size: .78rem; color: var(--muted); }
.ee-warn { color: var(--danger); font-weight: 600; }
@media (max-width: 26rem) {
  .ee-row { grid-template-columns: 1fr 5rem 4.2rem; }
  .ee-val, .ee-ref { font-size: .8rem; }
  .ee-table { font-size: .78rem; }
  .ee-table th, .ee-table td { padding: .28rem .3rem; }
  .ee-table td.ee-tab-cell { font-size: .78rem; }
  .ee-table tbody th.ee-tab-field { font-size: .76rem; }
  .ee-table .ee-tab-ref { margin-left: .2rem; }
}

/* ---------- public-log (anonymize) toggle ---------- */
.pub-log { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin: 0 0 4px; }
.pub-cb { display: inline-flex; align-items: center; gap: 8px; cursor: pointer; color: var(--label); font-size: 12px; text-transform: none; letter-spacing: 0; }
.pub-log input[type="checkbox"] { flex: 0 0 auto; -webkit-appearance: checkbox; appearance: auto; width: 16px; height: 16px; margin: 0; padding: 0; border: 0; border-radius: 0; background: none; accent-color: var(--accent); }
