/* ===================================================================
   NTUA building-energy dashboard -- styles.

   Neutral by design (DESIGN.md §1): the data and the testbed are NTUA's,
   so the page carries no partner brand. Warm greys, one blue accent, and
   the chart palette of the data-viz method (validated for colour-vision
   deficiency against exactly these two panel surfaces, #fcfcfb / #1a1a19).

   Every colour is a token on :root. Light is the default; dark comes
   from the OS (prefers-color-scheme) unless the theme menu pinned one
   (data-theme on <html>). The dark block is written twice on purpose:
   once for the OS preference, guarded so a pinned "light" wins, and once
   for a pinned "dark". charts.js reads the same tokens, so a chart
   re-themes with the page.

   Text tokens clear WCAG AA (4.5:1) on every surface they sit on, in
   both themes; ui_checks/shots.py measures the rendered page.
   =================================================================== */
:root{
  color-scheme:light;
  --bg:#f3f3f1; --panel:#fcfcfb; --panel-2:#f5f5f2; --panel-3:#ebeae6;
  --line:#e1e0d9; --line-2:#c9c8c0;
  --tx:#161615; --tx-2:#4a4944; --dim:#605f59;
  --acc:#1c5cab; --acc-solid:#1c5cab; --acc-tx:#ffffff;
  --acc-soft:rgba(28,92,171,.09);
  --ok:#16701a; --warn:#865300; --err:#b3261e;
  --ok-bg:rgba(22,112,26,.10); --warn-bg:rgba(134,83,0,.10); --err-bg:rgba(179,38,30,.08);
  --info-bg:rgba(28,92,171,.08);
  --scrim:rgba(22,22,21,.42);
  --e1:0 1px 2px rgba(22,22,21,.05);
  --e2:0 1px 2px rgba(22,22,21,.06),0 4px 12px -4px rgba(22,22,21,.12);
  --e3:0 4px 8px rgba(22,22,21,.08),0 16px 36px -12px rgba(22,22,21,.22);

  /* chart tokens (read by charts.js) */
  --chart-surface:#fcfcfb; --chart-ink:#161615; --chart-ink-2:#52514e;
  --chart-muted:#6b6a64; --chart-grid:#e9e8e2; --chart-axis:#c3c2b7;
  --chart-ghost:#898781;
  --s1:#2a78d6; --s2:#eb6834; --s3:#1baf7a; --s4:#eda100;
  --s5:#e87ba4; --s6:#008300; --s7:#6250d6; --s8:#e34948;
  --seq-0:#e3eefb; --seq-1:#b7d3f6; --seq-2:#86b6ef; --seq-3:#5598e7;
  --seq-4:#2a78d6; --seq-5:#1c5cab; --seq-6:#0d366b;
  --bridged:#9ec5f4; --empty-cell:#ecebe7;
  --q-complete:#2a78d6; --q-partial:#9ec5f4; --q-nofile:#c3c2b7;
  --status-warn:#c98500;

  --sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",
         Arial,"Noto Sans",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;
  --fs-h1:22px; --fs-h2:15px; --fs-body:14px; --fs-label:12.5px; --fs-micro:11.5px;
  --sp-1:4px; --sp-2:8px; --sp-3:12px; --sp-4:16px; --sp-5:20px; --sp-6:24px; --sp-8:32px;
  --r-sm:6px; --r:8px; --r-md:10px; --r-lg:14px; --r-full:999px;
  --dur:140ms; --ease:cubic-bezier(.2,0,0,1);
  --tap:40px;
  --top-h:56px;
  --side-w:232px; --rail-w:64px;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --bg:#0f0f0e; --panel:#1a1a19; --panel-2:#222220; --panel-3:#2c2c2a;
    --line:#2f2f2c; --line-2:#45443f;
    --tx:#f0efec; --tx-2:#c9c8bf; --dim:#a3a29a;
    --acc:#7fb2ee; --acc-solid:#5598e7; --acc-tx:#0b0b0b;
    --acc-soft:rgba(127,178,238,.12);
    --ok:#5cc95c; --warn:#f2b33d; --err:#f08080;
    --ok-bg:rgba(92,201,92,.14); --warn-bg:rgba(242,179,61,.14); --err-bg:rgba(240,128,128,.14);
    --info-bg:rgba(127,178,238,.12);
    --scrim:rgba(0,0,0,.6);
    --e1:0 1px 2px rgba(0,0,0,.3);
    --e2:0 1px 2px rgba(0,0,0,.35),0 4px 12px -4px rgba(0,0,0,.5);
    --e3:0 4px 8px rgba(0,0,0,.4),0 16px 36px -12px rgba(0,0,0,.7);
    --chart-surface:#1a1a19; --chart-ink:#f0efec; --chart-ink-2:#c3c2b7;
    --chart-muted:#a3a29a; --chart-grid:#2c2c2a; --chart-axis:#45443f;
    --chart-ghost:#8f8e87;
    --s1:#3987e5; --s2:#d95926; --s3:#199e70; --s4:#c98500;
    --s5:#d55181; --s6:#008300; --s7:#9085e9; --s8:#e66767;
    --seq-0:#1d2a3a; --seq-1:#123d73; --seq-2:#184f95; --seq-3:#256abf;
    --seq-4:#3987e5; --seq-5:#6da7ec; --seq-6:#b7d3f6;
    --bridged:#1c5cab; --empty-cell:#262624;
    --q-complete:#5598e7; --q-partial:#1c4f8f; --q-nofile:#5a5953;
    --status-warn:#fab219;
  }
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#0f0f0e; --panel:#1a1a19; --panel-2:#222220; --panel-3:#2c2c2a;
  --line:#2f2f2c; --line-2:#45443f;
  --tx:#f0efec; --tx-2:#c9c8bf; --dim:#a3a29a;
  --acc:#7fb2ee; --acc-solid:#5598e7; --acc-tx:#0b0b0b;
  --acc-soft:rgba(127,178,238,.12);
  --ok:#5cc95c; --warn:#f2b33d; --err:#f08080;
  --ok-bg:rgba(92,201,92,.14); --warn-bg:rgba(242,179,61,.14); --err-bg:rgba(240,128,128,.14);
  --info-bg:rgba(127,178,238,.12);
  --scrim:rgba(0,0,0,.6);
  --e1:0 1px 2px rgba(0,0,0,.3);
  --e2:0 1px 2px rgba(0,0,0,.35),0 4px 12px -4px rgba(0,0,0,.5);
  --e3:0 4px 8px rgba(0,0,0,.4),0 16px 36px -12px rgba(0,0,0,.7);
  --chart-surface:#1a1a19; --chart-ink:#f0efec; --chart-ink-2:#c3c2b7;
  --chart-muted:#a3a29a; --chart-grid:#2c2c2a; --chart-axis:#45443f;
  --chart-ghost:#8f8e87;
  --s1:#3987e5; --s2:#d95926; --s3:#199e70; --s4:#c98500;
  --s5:#d55181; --s6:#008300; --s7:#9085e9; --s8:#e66767;
  --seq-0:#1d2a3a; --seq-1:#123d73; --seq-2:#184f95; --seq-3:#256abf;
  --seq-4:#3987e5; --seq-5:#6da7ec; --seq-6:#b7d3f6;
  --bridged:#1c5cab; --empty-cell:#262624;
  --q-complete:#5598e7; --q-partial:#1c4f8f; --q-nofile:#5a5953;
  --status-warn:#fab219;
}

/* Inter and JetBrains Mono, served by the app (fonts/README.txt): subset
   by unicode-range, so a Greek page fetches the Greek and Latin files
   only. swap: the page is readable in the system font at once. */
@font-face{font-family:"Inter";font-style:normal;font-weight:400 700;font-display:swap;
  src:url(fonts/inter-latin.woff2) format("woff2");
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,
  U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"Inter";font-style:normal;font-weight:400 700;font-display:swap;
  src:url(fonts/inter-latin-ext.woff2) format("woff2");
  unicode-range:U+0100-02BA,U+02BD-02C5,U+02C7-02CC,U+02CE-02D7,U+02DD-02FF,U+0304,U+0308,
  U+0329,U+1D00-1DBF,U+1E00-1E9F,U+1EF2-1EFF,U+2020,U+20A0-20AB,U+20AD-20C0,U+2113,
  U+2C60-2C7F,U+A720-A7FF}
@font-face{font-family:"Inter";font-style:normal;font-weight:400 700;font-display:swap;
  src:url(fonts/inter-greek.woff2) format("woff2");
  unicode-range:U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-weight:400;font-display:swap;
  src:url(fonts/mono-latin.woff2) format("woff2");
  unicode-range:U+0000-00FF,U+0131,U+0152-0153,U+02BB-02BC,U+02C6,U+02DA,U+02DC,U+0304,
  U+0308,U+0329,U+2000-206F,U+20AC,U+2122,U+2191,U+2193,U+2212,U+2215,U+FEFF,U+FFFD}
@font-face{font-family:"JetBrains Mono";font-style:normal;font-weight:400;font-display:swap;
  src:url(fonts/mono-greek.woff2) format("woff2");
  unicode-range:U+0370-0377,U+037A-037F,U+0384-038A,U+038C,U+038E-03A1,U+03A3-03FF}

/* ---- base ---------------------------------------------------------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;text-size-adjust:100%}
body{margin:0;min-height:100vh;background:var(--bg);color:var(--tx);
  font:400 var(--fs-body)/1.5 var(--sans);font-feature-settings:"cv05" 1,"ss03" 1;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
h1,h2,h3,h4{margin:0;font-weight:600;letter-spacing:-.01em;line-height:1.3}
p{margin:0}
a{color:var(--acc);text-underline-offset:2px}
code,.mono{font-family:var(--mono);font-size:.92em}
::selection{background:var(--acc-solid);color:var(--acc-tx)}
:focus-visible{outline:2px solid var(--acc);outline-offset:2px}
[hidden]{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;
  clip:rect(0 0 0 0);white-space:nowrap;border:0}
.dim{color:var(--dim)}
.num{font-variant-numeric:tabular-nums}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.001ms!important;scroll-behavior:auto!important}
}

/* Material Symbols geometry, inline sprite in index.html (Apache-2.0). */
.ic{width:20px;height:20px;flex:0 0 auto;fill:currentColor;vertical-align:-.25em}
.ic-sm{width:16px;height:16px}

/* ---- controls ------------------------------------------------------ */
button,input,select{font:inherit;color:inherit}
.btn,select,input[type=date],input[type=text],input[type=search],input[type=password]{
  min-height:var(--tap);border:1px solid var(--line-2);border-radius:var(--r);
  background:var(--panel);color:var(--tx);padding:0 var(--sp-3);
  transition:border-color var(--dur) var(--ease),background-color var(--dur) var(--ease)}
select{padding-right:var(--sp-6)}
input::placeholder{color:var(--dim)}
select:hover,input:hover{border-color:var(--dim)}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-2);
  cursor:pointer;font-weight:500;white-space:nowrap;text-decoration:none;
  font-size:var(--fs-label)}
.btn:hover{background:var(--panel-2);border-color:var(--dim)}
.btn:disabled,.btn[aria-disabled="true"]{opacity:.5;cursor:not-allowed;pointer-events:none}
.btn.primary{background:var(--acc-solid);border-color:var(--acc-solid);color:var(--acc-tx)}
.btn.primary:hover{filter:brightness(1.08)}
.btn.ghost{background:transparent;border-color:transparent;color:var(--tx-2)}
.btn.ghost:hover{background:var(--panel-3);color:var(--tx)}
.btn.icon{width:var(--tap);padding:0;flex:0 0 var(--tap)}
.btn.small{min-height:32px;padding:0 var(--sp-3);font-size:var(--fs-micro)}
.btn.icon.small{width:32px;flex-basis:32px}
input[type=checkbox]{width:18px;height:18px;margin:0;accent-color:var(--acc-solid)}
label.check{display:inline-flex;align-items:center;gap:var(--sp-2);cursor:pointer;
  min-height:var(--tap)}

/* A segmented control: two or three mutually exclusive choices. */
.seg{display:inline-flex;border:1px solid var(--line-2);border-radius:var(--r);
  background:var(--panel);overflow:hidden;flex:0 0 auto}
.seg button{border:0;background:none;min-height:34px;padding:0 var(--sp-3);cursor:pointer;
  font-size:var(--fs-label);font-weight:500;color:var(--tx-2);display:inline-flex;
  align-items:center;gap:6px}
.seg button+button{border-left:1px solid var(--line-2)}
.seg button[aria-pressed="true"]{background:var(--acc-soft);color:var(--acc);font-weight:600}
.seg button:hover:not([aria-pressed="true"]){background:var(--panel-2);color:var(--tx)}

.chip{display:inline-flex;align-items:center;gap:6px;min-height:28px;padding:2px 10px;
  border-radius:var(--r-full);background:var(--panel-3);color:var(--tx-2);
  font-size:var(--fs-micro);font-weight:500;white-space:nowrap;max-width:100%}
.chip .ic{width:15px;height:15px}
.chip.info{background:var(--info-bg);color:var(--acc)}
.chip.warn{background:var(--warn-bg);color:var(--warn)}
/* Toggle chips (the sensors of the time series). The key is the sensor's
   chart colour, by its catalog slot. */
.chip-toggle{border:1px solid var(--line-2);background:var(--panel);cursor:pointer;
  min-height:36px;padding:4px 12px;font-size:var(--fs-label);color:var(--tx-2);
  border-radius:var(--r-full);display:inline-flex;align-items:center;gap:8px;
  min-width:0;max-width:100%;text-align:left}
.chip-toggle[aria-pressed="true"]{border-color:var(--acc);background:var(--acc-soft);color:var(--tx)}
.chip-toggle .lbl{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;min-width:0}
.chip-toggle .key{width:14px;height:3px;border-radius:2px;flex:0 0 auto}
.chip-toggle .key[data-slot="0"]{background:var(--s1)} .chip-toggle .key[data-slot="1"]{background:var(--s2)}
.chip-toggle .key[data-slot="2"]{background:var(--s3)} .chip-toggle .key[data-slot="3"]{background:var(--s4)}
.chip-toggle .key[data-slot="4"]{background:var(--s5)} .chip-toggle .key[data-slot="5"]{background:var(--s6)}
.chip-toggle .key[data-slot="6"]{background:var(--s7)} .chip-toggle .key[data-slot="7"]{background:var(--s8)}

/* ---- the application shell ----------------------------------------- */
body.booting .app{visibility:hidden}
.app{min-height:100vh;display:flex;flex-direction:column}
.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:var(--sp-3);
  min-height:var(--top-h);padding:var(--sp-2) var(--sp-5);background:var(--panel);
  border-bottom:1px solid var(--line)}
.brand{display:flex;align-items:center;gap:var(--sp-3);min-width:0;flex:1 1 auto}
.brand img{height:32px;width:auto;max-width:120px;object-fit:contain;flex:0 0 auto}
.brand-text{min-width:0;line-height:1.25}
.brand-title{display:block;font-size:15px;font-weight:600;white-space:nowrap;overflow:hidden;
  text-overflow:ellipsis}
.brand-sub{display:block;font-size:var(--fs-micro);color:var(--dim);white-space:nowrap;
  overflow:hidden;text-overflow:ellipsis}
.top-tools{display:flex;align-items:center;gap:var(--sp-2);flex:0 1 auto;min-width:0}
.locsel{display:flex;align-items:center;gap:6px;min-width:0}
.locsel select{max-width:260px;font-weight:600}
.status-chip{max-width:340px;overflow:hidden;text-overflow:ellipsis}
.menu-wrap{position:relative}
.menu{position:absolute;right:0;top:calc(100% + 6px);z-index:40;min-width:200px;padding:6px;
  background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  box-shadow:var(--e3);display:flex;flex-direction:column;gap:2px}
.menu button{display:flex;align-items:center;gap:var(--sp-3);width:100%;min-height:40px;
  padding:0 var(--sp-3);border:0;background:none;border-radius:var(--r-sm);cursor:pointer;
  text-align:left;color:var(--tx)}
.menu button:hover,.menu button:focus-visible{background:var(--panel-3)}
.menu button .check-mark{margin-left:auto;visibility:hidden;color:var(--acc)}
.menu button[aria-checked="true"] .check-mark{visibility:visible}
.menu button[aria-checked="true"]{font-weight:600}
.only-narrow{display:none}

.frame{flex:1;display:flex;min-height:0}
/* The column runs the page's full height; its content stays in view. */
.sidebar{width:var(--side-w);flex:0 0 var(--side-w);background:var(--panel);
  border-right:1px solid var(--line);z-index:20}
.sidebar-inner{position:sticky;top:var(--top-h);height:calc(100vh - var(--top-h));
  display:flex;flex-direction:column}
.nav{display:flex;flex-direction:column;gap:2px;padding:var(--sp-3) var(--sp-2);
  overflow-y:auto;flex:1}
.nav-sect{font-size:11px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;
  color:var(--dim);padding:var(--sp-4) var(--sp-3) var(--sp-1);white-space:nowrap}
.nav-sect:first-child{padding-top:var(--sp-1)}
.nav a{position:relative;display:flex;align-items:center;gap:var(--sp-3);min-height:42px;
  padding:0 var(--sp-3);border-radius:var(--r);color:var(--tx-2);text-decoration:none;
  font-weight:500;white-space:nowrap}
.nav a:hover{background:var(--panel-2);color:var(--tx)}
.nav a[aria-current="page"]{background:var(--acc-soft);color:var(--tx);font-weight:600}
.nav a[aria-current="page"] .ic{color:var(--acc)}
.nav a[aria-current="page"]::before{content:"";position:absolute;left:0;top:10px;bottom:10px;
  width:3px;border-radius:0 3px 3px 0;background:var(--acc)}
.nav a .lb{overflow:hidden;text-overflow:ellipsis}
.side-foot{border-top:1px solid var(--line);padding:var(--sp-2);display:none}
.scrim{display:none}

.content{flex:1;min-width:0;display:flex;flex-direction:column}
.toolbar{position:sticky;top:var(--top-h);z-index:15;display:flex;align-items:center;
  flex-wrap:wrap;gap:var(--sp-2) var(--sp-3);padding:var(--sp-3) var(--sp-8);
  background:var(--bg);background:color-mix(in srgb,var(--bg) 92%,transparent);
  backdrop-filter:saturate(1.4) blur(6px);border-bottom:1px solid var(--line)}
.toolbar .field-label{font-size:var(--fs-label);color:var(--dim);font-weight:500}
.range-dates{display:flex;align-items:center;gap:6px}
.range-dates input{width:150px}
.range-summary{font-size:var(--fs-label);color:var(--tx-2)}

main{flex:1;padding:var(--sp-6) var(--sp-8) var(--sp-8);min-width:0}
.view{display:flex;flex-direction:column;gap:var(--sp-4);min-width:0}
.view-head{display:flex;flex-wrap:wrap;align-items:flex-end;justify-content:space-between;
  gap:var(--sp-2) var(--sp-4);margin-bottom:var(--sp-1)}
.view-head h1{font-size:var(--fs-h1)}
.view-lede{color:var(--tx-2);margin-top:2px;max-width:78ch}
.view-tools{display:flex;flex-wrap:wrap;align-items:center;gap:var(--sp-2)}
.view-tools > *{min-width:0}

.footer{display:flex;flex-wrap:wrap;align-items:center;gap:var(--sp-2) var(--sp-4);
  padding:var(--sp-4) var(--sp-8) var(--sp-6);border-top:1px solid var(--line);
  color:var(--dim);font-size:var(--fs-micro)}
.footer .sp{flex:1}
.footer .attribution{color:var(--tx-2);font-weight:500}

/* ---- layout helpers -------------------------------------------------- */
.grid{display:grid;gap:var(--sp-4);min-width:0}
.grid > *{min-width:0}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-wide{grid-template-columns:minmax(0,7fr) minmax(0,5fr)}
.span-all{grid-column:1 / -1}

/* ---- KPI tiles --------------------------------------------------------- */
.kpis{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:var(--sp-3);
  grid-auto-flow:row dense;transition:opacity var(--dur) var(--ease)}
.kpis.kpis-4{grid-template-columns:repeat(4,minmax(0,1fr))}
.kpis.is-busy{opacity:.55}
.kpi{background:var(--panel);border:1px solid var(--line);border-radius:var(--r-md);
  padding:var(--sp-3) var(--sp-4);min-width:0;box-shadow:var(--e1);
  display:flex;flex-direction:column;gap:2px}
/* Two lines reserved for the label, so the values of a row line up. */
.kpi .label{font-size:var(--fs-label);color:var(--tx-2);font-weight:500;line-height:1.35;
  min-height:2.7em}
.kpi .value{font-size:26px;font-weight:600;letter-spacing:-.02em;line-height:1.2;
  margin-top:2px;overflow-wrap:anywhere}
.kpi .value .unit{font-size:14px;font-weight:500;color:var(--tx-2);margin-left:4px;
  letter-spacing:0}
.kpi .sub{font-size:var(--fs-micro);color:var(--dim);line-height:1.45}
.kpi .sub b{color:var(--tx-2);font-weight:600}
.kpi .badges{display:flex;flex-wrap:wrap;gap:6px;margin-top:6px}
.kpi.param{border-style:dashed}
/* The one hero figure of the page: the period's energy, with its measured
   and bridged (estimated) parts as one bar at the bottom of the tile. */
.kpi.hero{grid-column:span 2;grid-row:span 2;padding:var(--sp-4) var(--sp-5);gap:4px}
.kpi.hero .label{min-height:0}
.kpi.hero .value{font-size:48px;line-height:1.08;margin-top:6px}
.kpi.hero .value .unit{font-size:18px}
.meter-block{margin-top:auto;padding-top:var(--sp-4)}
.meter{display:flex;gap:2px;height:10px}
.meter span{display:block;height:100%}
.meter-measured{background:var(--s1);border-radius:5px 0 0 5px}
.meter-measured:last-child{border-radius:5px}
.meter-bridged{background:var(--bridged);min-width:4px;border-radius:0 5px 5px 0}
.meter-legend{display:flex;flex-wrap:wrap;gap:4px var(--sp-4);margin-top:var(--sp-2);
  font-size:var(--fs-micro);color:var(--tx-2)}
.meter-legend .key{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:6px;
  vertical-align:-1px}
.meter-legend .key.measured{background:var(--s1)}
.meter-legend .key.bridged{background:var(--bridged)}
.kpi-meta{display:flex;flex-wrap:wrap;gap:var(--sp-2) var(--sp-4);align-items:center;
  font-size:var(--fs-micro);color:var(--dim)}

/* ---- panels ------------------------------------------------------------ */
.panel{position:relative;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-md);box-shadow:var(--e1);display:flex;flex-direction:column;
  min-width:0}
.panel-head{display:flex;align-items:flex-start;gap:var(--sp-3);
  padding:var(--sp-4) var(--sp-4) var(--sp-2)}
.panel-titles{flex:1;min-width:0}
.panel-head h2{font-size:var(--fs-h2)}
.panel-sub{font-size:var(--fs-label);color:var(--dim);margin-top:2px}
.panel-actions{display:flex;align-items:center;gap:6px;flex:0 0 auto}
.panel-status{display:flex;flex-wrap:wrap;align-items:center;gap:var(--sp-2);margin-top:var(--sp-2)}
.panel-status:not(:has(:not([hidden]))){display:none}
.panel-body{position:relative;padding:var(--sp-2) var(--sp-4) var(--sp-3);min-width:0;
  transition:opacity var(--dur) var(--ease)}
.panel-foot{display:flex;flex-wrap:wrap;align-items:center;gap:var(--sp-1) var(--sp-3);
  padding:0 var(--sp-4) var(--sp-3);font-size:var(--fs-micro);color:var(--dim);
  min-height:28px}
.panel-foot .note{flex:1 1 240px;min-width:0}
/* Side-by-side panels end level: their charts take the row's height. */
.grid > .panel > .panel-body{flex:1 1 auto;display:flex;flex-direction:column}
.grid > .panel > .panel-body > .chart{flex:1 0 auto}
/* Loading keeps the previous render, dimmed, with a thin progress line:
   no skeleton flash, no layout jump (the method's "refetch keeps the
   frame"). */
.panel.is-busy .panel-body{opacity:.45}
.panel.is-stale .panel-body > :not(.panel-error){opacity:.35}
.panel.is-busy::before{content:"";position:absolute;left:0;right:0;top:0;height:2px;
  border-radius:var(--r-md) var(--r-md) 0 0;
  background:linear-gradient(90deg,transparent,var(--acc),transparent);
  background-size:40% 100%;background-repeat:no-repeat;
  animation:progress 1.1s linear infinite}
@keyframes progress{from{background-position:-40% 0}to{background-position:140% 0}}
.meta-badge{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);
  font-size:11px;color:var(--dim);white-space:nowrap;max-width:100%;overflow:hidden;
  text-overflow:ellipsis}
.meta-badge .ic{width:14px;height:14px;opacity:.8}

.panel-error{display:flex;align-items:flex-start;gap:var(--sp-3);margin:0 0 var(--sp-3);
  padding:var(--sp-3);border-radius:var(--r);background:var(--err-bg);color:var(--err);
  font-size:var(--fs-label);line-height:1.45}
.panel-error .msg{flex:1;min-width:0}
.panel-error .btn{flex:0 0 auto;min-height:32px;color:var(--tx);background:var(--panel)}
.empty{display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:var(--sp-2);min-height:160px;padding:var(--sp-6) var(--sp-4);text-align:center;
  color:var(--dim);font-size:var(--fs-body)}
.empty .ic{width:28px;height:28px;opacity:.55}

.chart{width:100%;height:300px;min-width:0}
.chart.h-sm{height:240px} .chart.h-md{height:340px} .chart.h-lg{height:440px}

/* Chart tooltips: ECharts injects this HTML into the page, so the page's
   tokens style it. Values lead, labels follow; a stroke keys each row. */
.tt{font:12px/1.5 var(--sans);color:var(--tx);min-width:170px;max-width:320px;white-space:normal}
.tt-head{font-weight:600;margin-bottom:4px}
.tt-row{display:flex;align-items:center;gap:8px}
.tt-key{width:12px;height:3px;border-radius:2px;flex:0 0 auto}
.tt-key.box{height:9px}
.tt-lbl{color:var(--tx-2)}
.tt-val{margin-left:auto;padding-left:14px;font-weight:600;font-variant-numeric:tabular-nums;
  white-space:nowrap}
.tt-note{margin-top:4px;color:var(--dim);font-size:11px}

/* ---- tables ------------------------------------------------------------- */
.table-wrap{overflow:auto;max-width:100%;border-top:1px solid var(--line)}
.table-wrap.capped{max-height:520px}
.panel-body .table-wrap{margin:0 calc(-1 * var(--sp-4))}
table.data{width:100%;border-collapse:collapse;font-size:var(--fs-label)}
table.data th,table.data td{padding:9px 10px;text-align:left;vertical-align:top;
  border-bottom:1px solid var(--line)}
table.data th:first-child,table.data td:first-child{padding-left:var(--sp-4)}
table.data th:last-child,table.data td:last-child{padding-right:var(--sp-4)}
/* Headers wrap (a wide numeric table fits its panel); numbers never do. */
table.data th{position:sticky;top:0;z-index:1;background:var(--panel-2);color:var(--tx-2);
  font-weight:600;font-size:var(--fs-micro);vertical-align:bottom;min-width:56px}
table.data td{color:var(--tx)}
table.data td.n,table.data th.n{text-align:right;font-variant-numeric:tabular-nums}
table.data td.n,table.data td.nowrap{white-space:nowrap}
table.data td.code{font-family:var(--mono);font-size:11.5px;white-space:nowrap}
table.data td.wrap{min-width:180px;max-width:560px}
table.data .stack{display:flex;flex-direction:column;white-space:nowrap}
table.data tbody tr:hover{background:var(--panel-2)}
table.data tbody tr:last-child td{border-bottom:0}
table.data th button.sort{all:unset;cursor:pointer;display:inline-flex;align-items:center;
  gap:4px;border-radius:4px}
table.data th button.sort:focus-visible{outline:2px solid var(--acc);outline-offset:2px}
table.data th[aria-sort] .arrow{color:var(--acc)}
table.data th .arrow{display:inline-block;width:10px;color:transparent}
.table-note{padding:var(--sp-2) var(--sp-4);font-size:var(--fs-micro);color:var(--dim)}
.table-controls{display:flex;flex-wrap:wrap;align-items:center;gap:var(--sp-2);
  padding:0 0 var(--sp-3)}
.table-controls .sp{flex:1}
.mobile-sort{display:none}
.btn.more{width:100%;margin-top:var(--sp-1)}
.pager{display:flex;align-items:center;gap:var(--sp-2);padding:var(--sp-3) 0 0;
  font-size:var(--fs-label);color:var(--tx-2)}

/* ---- key/value lists, cards of text, code -------------------------------- */
.kv{display:grid;grid-template-columns:max-content minmax(0,1fr);gap:6px var(--sp-4);
  font-size:var(--fs-label);margin:0}
.kv dt{color:var(--dim)}
.kv dd{margin:0;min-width:0;overflow-wrap:anywhere}
.hash{font-family:var(--mono);font-size:11.5px;overflow-wrap:anywhere;word-break:break-all}
/* A digest with its copy button, the button centred on the text. */
.hash-line{display:inline-flex;align-items:center;gap:var(--sp-1);max-width:100%;margin:-6px 0}
.hint{font-size:var(--fs-label);color:var(--dim);margin:var(--sp-3) 0}
.questions{list-style:none;margin:0;padding:0;display:grid;gap:var(--sp-3);
  grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
.questions li{border:1px solid var(--line);border-radius:var(--r);padding:var(--sp-3) var(--sp-4);
  background:var(--panel-2);min-width:0}
.questions h3{font-size:var(--fs-body);margin-bottom:4px}
.questions p{font-size:var(--fs-label);color:var(--tx-2);line-height:1.55}
.questions .qid{font-family:var(--mono);font-size:11px;color:var(--dim);margin-top:6px;display:block}
.observation-note{display:flex;gap:var(--sp-3);align-items:flex-start;padding:var(--sp-3);
  border-radius:var(--r);background:var(--info-bg);color:var(--tx-2);font-size:var(--fs-label);
  line-height:1.5}
.observation-note .ic{color:var(--acc);margin-top:1px}
pre.code{margin:0;padding:var(--sp-3) var(--sp-4);background:var(--panel-2);
  border:1px solid var(--line);border-radius:var(--r);overflow:auto;
  font-family:var(--mono);font-size:12px;line-height:1.6;color:var(--tx);white-space:pre}
.code-wrap{position:relative}
.code-wrap .btn{position:absolute;top:8px;right:8px}
details.level{border:1px solid var(--line);border-radius:var(--r);background:var(--panel)}
details.level+details.level{margin-top:var(--sp-2)}
details.level summary{cursor:pointer;padding:var(--sp-3) var(--sp-4);font-weight:600;
  font-size:var(--fs-label);min-height:var(--tap);display:flex;align-items:center;gap:var(--sp-2)}
details.level[open] summary{border-bottom:1px solid var(--line)}
details.level .table-wrap{border-top:0}
.subhead{font-size:var(--fs-body);font-weight:600;margin:var(--sp-6) 0 var(--sp-3)}
.subhead:first-child{margin-top:var(--sp-1)}
.deflist{display:grid;grid-template-columns:minmax(150px,max-content) minmax(0,1fr);
  gap:var(--sp-2) var(--sp-5);margin:0}
.deflist dt{font-weight:600;font-size:var(--fs-label);font-family:var(--mono);overflow-wrap:anywhere}
.deflist dd{margin:0;color:var(--tx-2);font-size:var(--fs-label);line-height:1.55}

/* ---- the export form ---------------------------------------------------- */
.form-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--sp-3) var(--sp-4)}
.field{display:flex;flex-direction:column;gap:6px;min-width:0}
.field > span{font-size:var(--fs-label);color:var(--tx-2);font-weight:500}
.field > select,.field > input{width:100%}
fieldset.field{border:0;margin:0;padding:0}
fieldset.field legend{font-size:var(--fs-label);color:var(--tx-2);font-weight:500;padding:0;
  margin-bottom:6px}
/* The sensors: one per line, titles verbatim and in full. */
.checks{display:flex;flex-direction:column}
.checks label.check{display:flex;align-items:flex-start;padding:10px 0;min-width:0}
.checks label.check input{margin-top:1px;flex:0 0 auto}
.checks label.check span{min-width:0;overflow-wrap:anywhere}
.export-result{display:flex;flex-wrap:wrap;align-items:center;gap:var(--sp-3);
  margin-top:var(--sp-4);padding-top:var(--sp-4);border-top:1px solid var(--line)}
.export-result .preview{flex:1 1 220px;font-size:var(--fs-label);color:var(--tx-2)}
.export-result .preview b{color:var(--tx);font-variant-numeric:tabular-nums}
.doc-list{list-style:none;margin:0;padding:0;display:grid;gap:var(--sp-5)}
.doc-list h3{font-size:var(--fs-body);margin-bottom:4px}
.doc-list p{font-size:var(--fs-label);color:var(--tx-2);line-height:1.55;margin-bottom:var(--sp-3)}

/* ---- toasts ---------------------------------------------------------------- */
.toasts{position:fixed;right:var(--sp-5);bottom:var(--sp-5);z-index:70;display:flex;
  flex-direction:column;gap:var(--sp-2);max-width:min(420px,calc(100vw - 32px));
  pointer-events:none}
.toast{display:flex;gap:var(--sp-3);align-items:flex-start;background:var(--panel);
  border:1px solid var(--line);border-left:3px solid var(--acc);border-radius:var(--r);
  padding:var(--sp-3) var(--sp-4);box-shadow:var(--e3);font-size:var(--fs-label);
  pointer-events:auto;animation:toastin 200ms var(--ease) both}
.toast.err{border-left-color:var(--err)}
.toast.ok{border-left-color:var(--ok)}
.toast.out{animation:toastout 160ms var(--ease) both}
@keyframes toastin{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}
@keyframes toastout{to{opacity:0;transform:translateY(6px)}}

/* ---- login ---------------------------------------------------------------- */
.login{position:fixed;inset:0;z-index:80;display:flex;align-items:center;justify-content:center;
  padding:var(--sp-4);background:var(--bg);overflow:auto}
.login-card{width:100%;max-width:400px;background:var(--panel);border:1px solid var(--line);
  border-radius:var(--r-lg);box-shadow:var(--e2);padding:var(--sp-8)}
.login-card img{display:block;max-height:48px;max-width:180px;margin-bottom:var(--sp-5)}
.login-card h1{font-size:20px}
.login-card .sub{color:var(--dim);margin:2px 0 var(--sp-6);font-size:var(--fs-label)}
.login-card form{display:flex;flex-direction:column;gap:var(--sp-4)}
.login-card .field input{min-height:44px}
.login-card .btn.primary{min-height:44px;font-size:var(--fs-body);margin-top:var(--sp-1)}
.login-error{padding:var(--sp-3);border-radius:var(--r);background:var(--err-bg);color:var(--err);
  font-size:var(--fs-label);line-height:1.45}
.login-foot{margin-top:var(--sp-6);font-size:var(--fs-micro);color:var(--dim);line-height:1.5}

/* ---- narrower desktops and tablets ------------------------------------------- */
@media (max-width:1180px){
  .kpis{grid-template-columns:repeat(4,minmax(0,1fr))}
  .grid-wide{grid-template-columns:minmax(0,1fr)}
  main{padding:var(--sp-5) var(--sp-5) var(--sp-6)}
  .toolbar{padding:var(--sp-3) var(--sp-5)}
  .footer{padding:var(--sp-4) var(--sp-5) var(--sp-5)}
}
/* Tablets: the sidebar becomes a rail of icons, expandable over the page. */
@media (max-width:1100px) and (min-width:641px){
  .sidebar:not(.wide){width:var(--rail-w);flex-basis:var(--rail-w)}
  .sidebar:not(.wide) .nav-sect{visibility:hidden;height:12px;padding:0}
  .sidebar:not(.wide) .nav a{justify-content:center;padding:0}
  .sidebar:not(.wide) .nav a .lb{display:none}
  .sidebar:not(.wide) .nav a[aria-current="page"]::before{left:-8px}
  .sidebar.wide{position:fixed;left:0;top:var(--top-h);bottom:0;box-shadow:var(--e3)}
  .side-foot{display:flex}
  .grid-2{grid-template-columns:minmax(0,1fr)}
  .status-chip .lb-long{display:none}
}
@media (max-width:860px){
  .status-chip{max-width:200px}
}

/* ---- phones: drawer navigation, tables become labelled cards ------------------ */
@media (max-width:640px){
  :root{--tap:44px;--top-h:auto}
  /* Two rows: menu, title, theme, logout; then the building and the data
     status. */
  .topbar{position:relative;display:grid;align-items:center;gap:var(--sp-2);
    grid-template-columns:var(--tap) minmax(0,1fr) minmax(0,1fr) var(--tap) var(--tap);
    grid-template-areas:"nav brand brand theme logout" "loc loc status status status";
    padding:var(--sp-2) var(--sp-3)}
  #nav-toggle{grid-area:nav}
  .brand{grid-area:brand}
  .brand-sub{display:none}
  .top-tools{display:contents}
  .locsel{grid-area:loc}
  .locsel select{max-width:none;width:100%}
  .status-chip{grid-area:status;justify-self:end;max-width:100%}
  .status-chip .lb-long{display:none}
  .menu-wrap{grid-area:theme}
  #logout-button{grid-area:logout}
  .only-narrow{display:inline-flex}

  .sidebar{position:fixed;left:0;top:0;bottom:0;width:min(84vw,300px);
    transform:translateX(-102%);transition:transform 200ms var(--ease);z-index:60;
    box-shadow:var(--e3)}
  .sidebar-inner{position:static;height:100%}
  body.drawer-open .sidebar{transform:none}
  .scrim{display:block;position:fixed;inset:0;background:var(--scrim);z-index:55;opacity:0;
    pointer-events:none;transition:opacity 200ms var(--ease)}
  body.drawer-open .scrim{opacity:1;pointer-events:auto}
  body.drawer-open{overflow:hidden}
  .nav a{min-height:48px}

  .toolbar{position:static;padding:var(--sp-3);gap:var(--sp-2);backdrop-filter:none;
    background:var(--bg)}
  .toolbar .field-label{display:none}
  #range-preset{flex:1 1 100%}
  .range-dates{flex:1 1 100%}
  .range-dates input{flex:1 1 0;width:auto;min-width:0}
  .range-summary{flex:1 1 100%}
  main{padding:var(--sp-4) var(--sp-3) var(--sp-5)}
  .view-head h1{font-size:19px}
  .footer{padding:var(--sp-4) var(--sp-3) var(--sp-5)}

  /* Every control a thumb-sized target (DESIGN §7: at least 40 px). */
  .btn.small,.seg button,.chip-toggle{min-height:var(--tap)}
  .btn.icon.small{width:var(--tap);flex-basis:var(--tap)}
  .chip-toggle{width:100%}

  .kpis,.kpis.kpis-4{grid-template-columns:repeat(2,minmax(0,1fr));gap:var(--sp-2)}
  .kpi{padding:var(--sp-3)}
  .kpi .value{font-size:21px}
  .kpi.hero{grid-row:auto}
  .kpi.hero .value{font-size:34px}
  .grid-2,.form-grid{grid-template-columns:minmax(0,1fr)}
  .panel-head{flex-wrap:wrap;padding:var(--sp-3) var(--sp-3) var(--sp-2)}
  .panel-actions{width:100%;flex-wrap:wrap;justify-content:flex-start}
  .panel-body{padding:var(--sp-2) var(--sp-3) var(--sp-3)}
  .panel-foot{padding:0 var(--sp-3) var(--sp-3)}
  .chart{height:280px}
  .chart.h-lg{height:380px}
  .questions{grid-template-columns:minmax(0,1fr)}
  .kv,.deflist{grid-template-columns:minmax(0,1fr);gap:0}
  .kv dt,.deflist dt{margin-top:var(--sp-2)}
  .toasts{left:var(--sp-3);right:var(--sp-3);bottom:var(--sp-3);max-width:none}
  .login-card{padding:var(--sp-6) var(--sp-5)}

  /* Every table row becomes a card; each cell is labelled from data-l. */
  .panel-body .table-wrap{margin:0;border-top:0;overflow:visible}
  .table-wrap.capped{max-height:none}
  table.data,table.data tbody,table.data tr,table.data td{display:block;width:100%}
  table.data thead{display:none}
  table.data tr{border:1px solid var(--line);border-radius:var(--r);margin-bottom:var(--sp-2);
    background:var(--panel);padding:4px 0}
  table.data tbody tr:hover{background:var(--panel)}
  table.data td,table.data td:first-child,table.data td:last-child,table.data td.wrap{display:flex;
    justify-content:space-between;gap:var(--sp-3);padding:6px var(--sp-3);border:0;
    text-align:right;white-space:normal;overflow-wrap:anywhere;min-width:0;max-width:none}
  table.data td::before{content:attr(data-l);flex:0 0 auto;max-width:48%;color:var(--dim);
    font-size:var(--fs-micro);font-weight:600;text-align:left}
  table.data td.wrap{flex-direction:column;align-items:flex-start;text-align:left}
  table.data td.code,table.data td.n,table.data td.nowrap{white-space:normal}
  .mobile-sort{display:flex;gap:var(--sp-2);align-items:center}
  .mobile-sort select{flex:1 1 auto;min-width:0}
}