/* ───────── TEK · top bar: the drawing's header strip ─────────
   Row 1: logo, the eight sheets of the set as tabs, tools. Row 2: a ruler whose marker follows the
   pointer, with the current sheet's title block on its right. Under the hovered/active tab sits a
   dimension line that slides between tabs and shows the tab's width; hovering a tab opens a callout
   note with what the tool does. */
:root { --side-w: 0px !important; --nav-h: 94px !important; --tb-row: 64px; --tb-ruler: 30px; }
body { padding-left: 0 !important; padding-top: 0; }
#backdrop { left: 0 !important; }

.nav.top {
  position: fixed; inset: 0 0 auto 0; height: auto; z-index: 45; display: block; padding: 0;
  background:
    linear-gradient(rgba(226, 238, 255, .05) 1px, transparent 1px) 0 0 / 100% 16px,
    linear-gradient(90deg, rgba(226, 238, 255, .05) 1px, transparent 1px) 0 0 / 16px 100%,
    rgba(9, 40, 90, .95);
  border-bottom: 1px solid var(--pen-2);
  backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
}
.nav.top::after { content: ''; position: absolute; left: 0; right: 0; bottom: -5px; height: 4px; border-bottom: 1px solid var(--pen-4); pointer-events: none; }
.tb-row { height: var(--tb-row); display: flex; align-items: center; gap: 18px; padding: 0 18px; position: relative; }
.nav.top .brand { display: flex; align-items: center; gap: 11px; flex: none; padding-right: 18px; height: 100%; border-right: 1px solid var(--pen-3); }
.nav.top .brand::after { display: none; }
.nav.top .tek-mark { width: 38px; height: 38px; }
.brand-txt { display: grid; gap: 3px; }
.nav.top .brand-word { font: 700 27px/0.9 var(--display) !important; letter-spacing: .16em !important; color: var(--pen); }
.brand-sub { font: 500 8.5px/1 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--pen-2); }

.tb-body { flex: 1; min-width: 0; display: flex; align-items: center; justify-content: space-between; gap: 14px; height: 100%; }
.nav.top .modnav { position: relative; display: flex; align-items: stretch; gap: 0; height: 100%; padding: 0; border: 0; border-radius: 0; background: none; opacity: 1; transform: none; pointer-events: auto; }
.nav.top .modnav a {
  position: relative; display: flex; align-items: center; gap: 7px; padding: 0 12px; height: 100%; border-radius: 0; border: 0;
  font: 600 15.5px/1 var(--display); letter-spacing: .07em; text-transform: uppercase; color: var(--pen); white-space: nowrap;
  transition: color .2s, background .25s;
}
.nav.top .modnav a + a::before { content: ''; position: absolute; left: 0; top: 22px; bottom: 22px; width: 1px; background: var(--pen-4); }
.nav.top .modnav a i { font: 500 9.5px/1 var(--mono); font-style: normal; color: var(--pen-2); letter-spacing: .06em; align-self: flex-start; margin-top: 18px; }
.nav.top .modnav a > span { display: block; }
.nav.top .modnav a:hover { background: rgba(226, 238, 255, .06); }
.nav.top .modnav a[aria-current="page"] { color: var(--hi); background: linear-gradient(rgba(255, 210, 63, .1), rgba(255, 210, 63, 0)); }
.nav.top .modnav a[aria-current="page"] i { color: var(--hi); }
/* the callout note under a hovered tab */
.nav.top .modnav a small {
  position: absolute; left: 12px; top: calc(100% + var(--tb-ruler) + 14px); z-index: 3; pointer-events: none;
  font: 500 11px/1 var(--mono); letter-spacing: .06em; text-transform: none; color: var(--pen); white-space: nowrap;
  padding: 7px 10px; background: var(--bp-deep); border: 1px solid var(--pen-2);
  opacity: 0; transform: translateY(-6px); transition: opacity .18s, transform .25s var(--ease);
}
.nav.top .modnav a small::before { content: ''; position: absolute; left: 14px; bottom: 100%; width: 1px; height: calc(var(--tb-ruler) + 14px); background: linear-gradient(var(--hi), var(--hi)) 0 0 / 1px 100% no-repeat; }
.nav.top .modnav a small::after { content: ''; position: absolute; left: 12px; top: calc(-1 * var(--tb-ruler) - 16px); width: 5px; height: 5px; border-radius: 50%; background: var(--hi); }
.nav.top .modnav a:hover small { opacity: 1; transform: none; }
/* sliding dimension line under the tab */
.nav-ink { position: absolute; left: 0; bottom: 6px; height: 12px; width: 0; pointer-events: none; color: var(--hi); transition: left .38s var(--ease), width .38s var(--ease), opacity .2s; opacity: 0; }
.nav-ink.on { opacity: 1; }
.nav-ink::before { content: ''; position: absolute; left: 0; right: 0; top: 6px; height: 1px; background: currentColor; }
.nav-ink::after { content: ''; position: absolute; left: 0; right: 0; top: 1px; bottom: 1px; border-left: 1px solid currentColor; border-right: 1px solid currentColor; }
.nav-ink em { position: absolute; left: 50%; top: -1px; transform: translateX(-50%); font: 500 8.5px/1 var(--mono); font-style: normal; letter-spacing: .08em; color: var(--hi); background: rgba(9, 40, 90, 1); padding: 2px 4px; }

.tb-tools { display: flex; align-items: center; gap: 8px; flex: none; margin: 0; padding: 0; border: 0; }
.nav.top .guide-btn { height: 34px; width: 34px; padding: 0; justify-content: center; border: 1px dashed var(--pen-3); }
.nav.top .guide-btn em { display: none; }
.nav.top .guide-btn span { border: 0 !important; width: auto; height: auto; font-size: 14px; }
.nav.top .ca-chip { height: 34px; padding: 0 10px; gap: 10px; border-radius: 0 !important; }
.nav.top .x-link { display: inline-flex; width: 34px; height: 34px; align-items: center; justify-content: center; border: 1px solid var(--pen-3); }
.nav.top .net { height: 34px; padding: 0 8px; border: 1px solid var(--pen-4); border-radius: 0; }
.nav.top .wbtn { height: 34px; padding: 0 16px; border-radius: 0 !important; border: 1px solid var(--hi) !important; background: var(--hi) !important; color: var(--hi-ink) !important; font: 700 14px/1 var(--display) !important; letter-spacing: .14em !important; text-transform: uppercase; transition: background .2s, color .2s; }
.nav.top .wbtn:hover { background: transparent !important; color: var(--hi) !important; }
.nav.top .wbtn.on { background: transparent !important; color: var(--pen) !important; border-color: var(--pen-3) !important; font: 500 11.5px/1 var(--mono) !important; letter-spacing: 0 !important; text-transform: none; }
.nav.top .menu-btn { display: none; }

/* ruler */
.tb-ruler {
  position: relative; height: var(--tb-ruler); border-top: 1px solid var(--pen-3); overflow: hidden;
  background:
    linear-gradient(90deg, var(--pen-2) 1px, transparent 1px) 0 0 / 100px 12px repeat-x,
    linear-gradient(90deg, var(--pen-3) 1px, transparent 1px) 0 0 / 50px 8px repeat-x,
    linear-gradient(90deg, var(--pen-4) 1px, transparent 1px) 0 0 / 10px 5px repeat-x;
}
.tb-ruler .tb-n { position: absolute; top: 14px; font: 500 8.5px/1 var(--mono); color: var(--pen-2); transform: translateX(3px); pointer-events: none; }
.tb-mark { position: absolute; top: 0; bottom: 0; left: 0; width: 1px; background: var(--hi); transform: translateX(-100px); transition: opacity .2s; }
.tb-mark::before { content: ''; position: absolute; top: 0; left: -4px; border: 4.5px solid transparent; border-top: 6px solid var(--hi); }
.tb-mark::after { content: attr(data-x); position: absolute; top: 15px; left: 6px; font: 500 9px/1 var(--mono); color: var(--hi); white-space: nowrap; }
.tb-sheet { position: absolute; right: 0; top: 0; bottom: 0; display: flex; align-items: stretch; background: rgba(9, 40, 90, 1); border-left: 1px solid var(--pen-3); font: 500 9.5px/1 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--pen-2); }
.tb-sheet > * { display: flex; align-items: center; padding: 0 12px; border-left: 1px solid var(--pen-4); }
.tb-sheet > *:first-child { border-left: 0; }
.tb-sheet b { font: 700 13px/1 var(--display); letter-spacing: .14em; color: var(--hi); }
.tb-sheet .tb-title { color: var(--pen); font: 600 13px/1 var(--display); letter-spacing: .12em; }
.tb-sheet .flip { animation: tbFlip .5s var(--ease); }

/* the old sheet frame now starts under the bar */
.bp-frame { top: calc(var(--nav-h) + 8px) !important; left: 8px !important; }

@media (max-width: 1540px) { .nav.top .net-label, .brand-sub, .nav.top .net { display: none; } .nav.top .modnav a { padding: 0 9px; font-size: 14.5px; } .nav.top .ca-chip .ca-long { display: none; } }
@media (max-width: 1240px) { .nav.top .modnav a i { display: none; } .tb-row { gap: 12px; padding: 0 12px; } .nav.top .brand { padding-right: 12px; } }
@media (max-width: 1120px) {
  :root { --nav-h: 60px !important; }
  .nav.top { backdrop-filter: none; -webkit-backdrop-filter: none; background-color: rgba(9, 40, 90, .98); }
  .tb-row { height: 60px; }
  .tb-ruler { display: none; }
  .nav.top .menu-btn { display: inline-block; margin-left: auto; border-radius: 0; border-color: var(--pen-3); }
  .nav.top .brand { border-right: 0; }
  .tb-body { position: fixed; top: 60px; left: 0; right: 0; bottom: 0; height: auto; flex-direction: column; align-items: stretch; justify-content: flex-start; gap: 0; padding: 10px 16px 20px; overflow-y: auto;
    background: linear-gradient(rgba(226, 238, 255, .05) 1px, transparent 1px) 0 0 / 100% 24px, linear-gradient(90deg, rgba(226, 238, 255, .05) 1px, transparent 1px) 0 0 / 24px 100%, var(--bp-deep);
    transform: translateY(-8px); opacity: 0; pointer-events: none; transition: opacity .25s, transform .3s var(--ease); }
  .tb-body.open { transform: none; opacity: 1; pointer-events: auto; }
  .nav.top .modnav { flex-direction: column; height: auto; flex: none; top: auto; left: auto; right: auto; }
  .nav.top .modnav a { height: auto; padding: 14px 4px; border-bottom: 1px dashed var(--pen-4); font-size: 20px; }
  .nav.top .modnav a + a::before { display: none; }
  .nav.top .modnav a i { display: inline; margin-top: 0; align-self: center; width: 22px; }
  .nav.top .modnav a small { position: static; opacity: 1; transform: none; display: block; padding: 4px 0 0; background: none; border: 0; color: var(--pen-2); font-size: 11px; }
  .nav.top .modnav a small::before, .nav.top .modnav a small::after { display: none; }
  .nav-ink { display: none; }
  .tb-tools { flex-wrap: wrap; margin-top: 18px; gap: 10px; }
  .nav.top .wbtn { flex: 1; height: 42px; }
}

/* ═════════════ layouts v2: sheets, parts list, flowcharts, balloons, notes ═════════════ */
.tb-sheet { z-index: 2; }

/* parts list (home) */
.bom { display: grid; border: 1px solid var(--pen-2); background: rgba(10, 45, 100, .6); }
.bom-h, .bom-r { display: grid; grid-template-columns: 74px minmax(180px, 1.1fr) minmax(0, 2.2fr) 190px; align-items: center; }
.bom-h { border-bottom: 1px solid var(--pen-2); font: 500 10px/1 var(--mono); letter-spacing: .16em; text-transform: uppercase; color: var(--pen-2); background: rgba(9, 40, 90, .9); }
.bom-h span, .bom-r > * { padding: 12px 16px; border-left: 1px solid var(--pen-4); height: 100%; display: flex; align-items: center; }
.bom-h span:first-child, .bom-r > *:first-child { border-left: 0; justify-content: center; }
.bom-r { position: relative; border-bottom: 1px dashed var(--pen-4); color: var(--pen); transition: background .2s; }
.bom-r:last-child { border-bottom: 0; }
.bom-r::before { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 3px; background: var(--hi); transform: scaleY(0); transition: transform .3s var(--ease); }
.bom-r:hover { background: rgba(255, 210, 63, .07); }
.bom-r:hover::before { transform: none; }
.bom-i { font: 600 20px/1 var(--display); }
.bom-r .bom-i { position: relative; width: 74px; justify-content: center; color: var(--hi); }
.bom-r .bom-i::after { content: ''; position: absolute; width: 38px; height: 38px; border: 1px solid var(--hi); border-radius: 50%; left: 50%; top: 50%; transform: translate(-50%, -50%); transition: transform .3s var(--ease); }
.bom-r:hover .bom-i::after { transform: translate(-50%, -50%) scale(1.15); }
.bom-p { flex-direction: column; align-items: flex-start !important; justify-content: center; gap: 5px; }
.bom-p b { font: 700 21px/1 var(--display); letter-spacing: .06em; text-transform: uppercase; }
.bom-p small { font: 500 11px/1.3 var(--mono); color: var(--pen-2); }
.bom-r p { margin: 0; color: var(--mute); font-size: 14px; line-height: 1.55; }
.bom-go { font: 600 14px/1 var(--display); letter-spacing: .1em; text-transform: uppercase; color: var(--hi); justify-content: space-between; }
.bom-r:hover .bom-go { letter-spacing: .16em; }
@media (max-width: 860px) { .bom-h { display: none; } .bom-r { grid-template-columns: 60px 1fr; } .bom-r p, .bom-go { grid-column: 2; border-left: 0; padding-top: 0; } .bom-r .bom-i { width: 60px; } }

/* flowcharts: steps joined by arrows, numbers in balloons */
.tl-steps, .au-flow, .hub-how-s { position: relative; }
.tl-steps li, .au-flow > *, .hub-how-s li { position: relative; }
.tl-steps li:not(:last-child)::after, .au-flow > *:not(:last-child)::after, .hub-how-s li:not(:last-child)::after {
  content: ''; position: absolute; z-index: 2; right: -13px; top: 50%; width: 24px; height: 12px; transform: translateY(-50%);
  background: linear-gradient(var(--hi), var(--hi)) 0 50% / 16px 1.5px no-repeat, conic-gradient(from -135deg at 100% 50%, var(--hi) 0 90deg, transparent 0) right center / 9px 12px no-repeat;
}
.hub-how-s { gap: 26px !important; }
.hub-how-s li:not(:last-child)::after { right: -26px; }
.tl-steps li > span, .hub-how-s li > span {
  width: 46px; height: 46px; border-radius: 50% !important; display: grid !important; place-items: center; border: 1px solid var(--hi); background: rgba(255, 210, 63, .08) !important;
  font: 700 24px/1 var(--display) !important; color: var(--hi) !important; position: relative;
}
.tl-steps li > span::after, .hub-how-s li > span::after { content: ''; position: absolute; left: 100%; top: 50%; width: 18px; height: 1px; background: var(--hi); }
.tl-steps li { padding-top: 24px !important; }
@media (max-width: 1000px) { .tl-steps li::after, .au-flow > *::after, .hub-how-s li::after { display: none !important; } }

/* the post to write: a numbered NOTE with a leader */
.tl-cmd { position: relative; padding-left: 68px !important; }
.tl-cmd::before { content: 'NOTE 1'; position: absolute; left: 0; top: 0; bottom: 0; width: 50px; display: grid; place-items: center; writing-mode: vertical-rl; transform: rotate(180deg); border-right: 1px solid var(--pen-3); font: 500 10px/1 var(--mono); letter-spacing: .2em; color: var(--hi); background: rgba(255, 210, 63, .06); }
/* KPIs as a data table with a header row */
.tl-kpis { position: relative; margin-top: 18px; }
.tl-kpis::before { content: 'LIVE DATA'; position: absolute; left: -1px; bottom: 100%; padding: 4px 10px; border: 1px solid var(--pen-3); border-bottom: 0; font: 500 9px/1 var(--mono); letter-spacing: .2em; color: var(--pen-2); background: rgba(9, 40, 90, .9); }
.tl-kpis b { font-family: var(--display) !important; color: var(--pen); }

/* sheets that hold a drawing get a title tag on their top edge */
.tl-screen, .ag-sketch { position: relative; }
.tl-screen::before, .au-la::before, .ag-sketch::before { content: 'DWG · LIVE'; position: absolute; left: 12px; top: -9px; z-index: 2; padding: 2px 8px; font: 500 9px/1.2 var(--mono); letter-spacing: .18em; color: var(--hi-ink); background: var(--hi); }
.tl-play { display: none; }

/* agents schematic panel */
.ag-radar { background: linear-gradient(rgba(226, 238, 255, .06) 1px, transparent 1px) 0 0 / 20px 20px, linear-gradient(90deg, rgba(226, 238, 255, .06) 1px, transparent 1px) 0 0 / 20px 20px, rgba(9, 42, 94, .85) !important; border: 1px solid var(--pen-2) !important; }
.ag-radar-legend i.a { border-radius: 0 !important; border: 1px solid var(--pen) !important; background: transparent !important; }
.ag-radar-legend i.c { border-radius: 0 !important; background: var(--pen) !important; transform: none !important; }
.ag-radar-legend i.l { background: var(--hi) !important; }

/* the sheet frame drawn by the canvas replaces the old monitor plates on full heroes */
.hub-hero::before, .mu-hero::before, .ot-hero::before { display: none !important; }
#view .hub-what-g.bom { display: grid !important; grid-template-columns: 1fr !important; gap: 0 !important; }
#view .tl-steps li > span, #view .hub-how-s li > span { border-radius: 50% !important; }