/* ==========================================================================
   MeterGW dashboard
   Palette is RAL 7035 switchgear grey - the actual colour of the equipment.
   The only saturated colours are the R/Y/B phase accents, which follow the
   local R-Y-B phase convention so the data reads the way an electrician
   already thinks about it.
   ========================================================================== */
:root{
  --panel:#E4E5E0;
  --surface:#F5F5F2;
  --surface-2:#FBFBF9;
  --ink:#1A1D1F;
  --ink-2:#5A6063;
  --ink-3:#8A8F91;
  --rule:#C8CAC4;
  --rule-soft:#DBDCD7;

  --ph-r:#B23A32;
  --ph-y:#C08A1E;
  --ph-b:#2A6489;

  --ok:#2C7355;
  --ok-bg:#DCEAE3;
  --warn:#96650E;
  --warn-bg:#F3E7CE;
  --alarm:#B23A32;
  --alarm-bg:#F3DEDC;

  --mono:'IBM Plex Mono',ui-monospace,Menlo,monospace;
  --sans:'IBM Plex Sans',ui-sans-serif,system-ui,sans-serif;
  --display:'Archivo',var(--sans);
}
@media (prefers-color-scheme:dark){
  :root{
    --panel:#191B1C;--surface:#212425;--surface-2:#282B2C;
    --ink:#E8E8E4;--ink-2:#A6ABAD;--ink-3:#767B7D;
    --rule:#3A3E3F;--rule-soft:#2E3233;
    --ph-r:#D9635A;--ph-y:#DCA83E;--ph-b:#5B9BC4;
    --ok:#6BBE96;--ok-bg:#1E3A2E;
    --warn:#D8A94E;--warn-bg:#3A2F17;
    --alarm:#D9635A;--alarm-bg:#3A2320;
  }
}

*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--panel);color:var(--ink);
  font:400 15px/1.55 var(--sans);
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{margin:0;font-family:var(--display);font-weight:600;letter-spacing:-.01em}
button{font-family:var(--sans);cursor:pointer}
button:focus-visible,[tabindex]:focus-visible{outline:2px solid var(--ph-b);outline-offset:2px}

/* ---- top bar ---------------------------------------------------------- */
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:14px 22px;background:var(--surface);
  border-bottom:1px solid var(--rule);
  position:sticky;top:0;z-index:20;flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:10px}
/* Three stacked bars: the R/Y/B phases, which is the whole subject */
.mark{width:18px;height:18px;flex:none;border-radius:2px;
  background:linear-gradient(var(--ph-r) 0 33.3%,var(--ph-y) 33.3% 66.6%,var(--ph-b) 66.6% 100%)}
.wordmark{font-family:var(--display);font-weight:600;font-size:17px;letter-spacing:-.02em}
.topbar-right{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.clock{font:500 13px var(--mono);color:var(--ink-2);font-variant-numeric:tabular-nums}

.rec{
  display:inline-flex;align-items:center;gap:8px;
  padding:7px 14px;border:1px solid var(--rule);border-radius:20px;
  background:var(--surface-2);color:var(--ink-2);font-size:13px;font-weight:500;
  transition:background .15s,color .15s,border-color .15s;
}
.rec-dot{width:8px;height:8px;border-radius:50%;background:var(--ink-3);flex:none}
.rec[aria-pressed="true"]{background:var(--alarm-bg);border-color:var(--alarm);color:var(--alarm)}
.rec[aria-pressed="true"] .rec-dot{background:var(--alarm)}
@media (prefers-reduced-motion:no-preference){
  .rec[aria-pressed="true"] .rec-dot{animation:pulse 2s ease-in-out infinite}
}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.35}}

.btn-ghost{
  padding:7px 14px;border:1px solid var(--rule);border-radius:6px;
  background:transparent;color:var(--ink);font-size:13px;font-weight:500;
}
.btn-ghost:hover{background:var(--surface-2);border-color:var(--ink-3)}
.btn-ghost:disabled{opacity:.5;cursor:default}

/* ---- site strip ------------------------------------------------------- */
.siterail{
  display:flex;gap:8px;padding:12px 22px;overflow-x:auto;
  background:var(--surface);border-bottom:1px solid var(--rule);
  scrollbar-width:thin;
}
.sitechip{
  flex:none;display:flex;align-items:center;gap:9px;
  padding:9px 15px;border:1px solid var(--rule);border-radius:8px;
  background:var(--surface-2);color:var(--ink);font-size:14px;font-weight:500;
  white-space:nowrap;
}
.sitechip:hover{border-color:var(--ink-3)}
.sitechip[aria-current="true"]{background:var(--ink);color:var(--panel);border-color:var(--ink)}
.sitechip .sub{font:400 12px var(--mono);opacity:.65}
.led{width:7px;height:7px;border-radius:50%;flex:none;background:var(--ink-3)}
.led.on{background:var(--ok);box-shadow:0 0 0 3px color-mix(in srgb,var(--ok) 22%,transparent)}
.led.off{background:var(--alarm);box-shadow:0 0 0 3px color-mix(in srgb,var(--alarm) 22%,transparent)}

main{max-width:1240px;margin:0 auto;padding:22px}

/* ---- environment strip ------------------------------------------------ */
.env{display:grid;grid-template-columns:repeat(auto-fit,minmax(158px,1fr));gap:12px;margin-bottom:22px}
.envcard{background:var(--surface);border:1px solid var(--rule);border-radius:10px;padding:14px 16px}
.envcard .k{font-size:11px;text-transform:uppercase;letter-spacing:.09em;
  color:var(--ink-3);font-weight:600;margin-bottom:7px}
.envcard .v{font:500 26px/1 var(--mono);font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.envcard .v .u{font-size:14px;color:var(--ink-2);margin-left:3px}
.envcard.hot{border-color:var(--alarm);background:var(--alarm-bg)}
.envcard.hot .v{color:var(--alarm)}

.eyebrow{font-size:11px;text-transform:uppercase;letter-spacing:.09em;
  color:var(--ink-3);font-weight:600;font-family:var(--sans);margin-bottom:12px}

.split{display:grid;grid-template-columns:minmax(320px,400px) 1fr;gap:22px;align-items:start}
@media (max-width:900px){.split{grid-template-columns:1fr}}

/* ---- the DIN rail ----------------------------------------------------- */
.rail{position:relative;padding-left:20px}
.rail::before{content:'';position:absolute;left:5px;top:6px;bottom:6px;width:3px;
  background:var(--rule);border-radius:2px}
.devcard{
  position:relative;background:var(--surface);border:1px solid var(--rule);
  border-radius:9px;padding:13px 15px;margin-bottom:10px;width:100%;text-align:left;
  color:var(--ink);display:block;
}
.devcard::before{content:'';position:absolute;left:-15px;top:22px;width:15px;height:2px;
  background:var(--rule)}
.devcard:hover{border-color:var(--ink-3)}
.devcard[aria-current="true"]{border-color:var(--ink);box-shadow:inset 3px 0 0 var(--ink)}
.devcard.offline{opacity:.62}
.devhead{display:flex;align-items:baseline;justify-content:space-between;gap:10px;margin-bottom:3px}
.devname{font-weight:600;font-size:14.5px}
.devaddr{font:500 11px var(--mono);color:var(--ink-3)}
.devdrv{font-size:12px;color:var(--ink-2);margin-bottom:10px}
.devkw{font:600 21px/1 var(--mono);font-variant-numeric:tabular-nums;margin-bottom:10px}
.devkw .u{font-size:12px;font-weight:400;color:var(--ink-2);margin-left:3px}

/* Signature: three-phase current bars, R/Y/B, with imbalance called out */
.phasebar{display:flex;flex-direction:column;gap:4px}
.prow{display:grid;grid-template-columns:14px 1fr 52px;align-items:center;gap:8px}
.plabel{font:600 10px var(--mono);color:var(--ink-3)}
.ptrack{height:5px;background:var(--rule-soft);border-radius:3px;overflow:hidden}
.pfill{height:100%;border-radius:3px;transition:width .4s ease}
@media (prefers-reduced-motion:reduce){.pfill{transition:none}}
.pR .pfill{background:var(--ph-r)} .pY .pfill{background:var(--ph-y)} .pB .pfill{background:var(--ph-b)}
.pR .plabel{color:var(--ph-r)} .pY .plabel{color:var(--ph-y)} .pB .plabel{color:var(--ph-b)}
.pval{font:500 11px var(--mono);color:var(--ink-2);text-align:right;font-variant-numeric:tabular-nums}
.imbal{margin-top:8px;font:500 11px var(--mono);color:var(--ink-3)}
.imbal.bad{color:var(--alarm)}

.tag{display:inline-block;padding:2px 7px;border-radius:4px;font:600 10px var(--sans);
  text-transform:uppercase;letter-spacing:.05em}
.tag.ok{background:var(--ok-bg);color:var(--ok)}
.tag.warn{background:var(--warn-bg);color:var(--warn)}
.tag.bad{background:var(--alarm-bg);color:var(--alarm)}

/* ---- detail panel ----------------------------------------------------- */
.detail{background:var(--surface);border:1px solid var(--rule);border-radius:11px;
  padding:20px;min-height:400px}
.empty{display:flex;flex-direction:column;justify-content:center;align-items:center;
  min-height:360px;text-align:center;color:var(--ink-2)}
.empty h3{font-size:16px;margin-bottom:6px;color:var(--ink)}
.empty p{max-width:280px;font-size:14px;margin:0}

.dhead{display:flex;justify-content:space-between;align-items:flex-start;gap:14px;
  flex-wrap:wrap;margin-bottom:18px}
.dhead h3{font-size:19px}
.dhead .meta{font:400 12.5px var(--mono);color:var(--ink-2);margin-top:3px}
.metricpick{display:flex;gap:5px;flex-wrap:wrap;margin-bottom:14px}
.mbtn{padding:5px 11px;border:1px solid var(--rule);border-radius:5px;background:transparent;
  font:500 12px var(--mono);color:var(--ink-2)}
.mbtn[aria-pressed="true"]{background:var(--ink);color:var(--panel);border-color:var(--ink)}
.chartwrap{height:210px;margin-bottom:20px}

.regs{display:grid;grid-template-columns:repeat(auto-fill,minmax(112px,1fr));gap:1px;
  background:var(--rule);border:1px solid var(--rule);border-radius:8px;overflow:hidden}
.reg{background:var(--surface-2);padding:10px 12px}
.reg .k{font:600 10px var(--mono);text-transform:uppercase;letter-spacing:.05em;
  color:var(--ink-3);margin-bottom:4px}
.reg .v{font:500 16px var(--mono);font-variant-numeric:tabular-nums}
.reg.r1 .k{color:var(--ph-r)}.reg.r2 .k{color:var(--ph-y)}.reg.r3 .k{color:var(--ph-b)}

/* ---- events ----------------------------------------------------------- */
.events-block{margin-top:26px}
.events{background:var(--surface);border:1px solid var(--rule);border-radius:10px;overflow:hidden}
.ev{display:grid;grid-template-columns:82px 68px 1fr;gap:12px;align-items:baseline;
  padding:10px 15px;border-bottom:1px solid var(--rule-soft);font-size:13.5px}
.ev:last-child{border-bottom:0}
.ev time{font:400 11.5px var(--mono);color:var(--ink-3)}
.ev .msg{color:var(--ink-2)}
.ev.alarm .msg{color:var(--ink)}

.toast{position:fixed;left:50%;bottom:26px;transform:translateX(-50%) translateY(90px);
  background:var(--ink);color:var(--panel);padding:11px 20px;border-radius:8px;
  font-size:14px;font-weight:500;opacity:0;pointer-events:none;transition:.25s;z-index:60}
.toast.show{transform:translateX(-50%) translateY(0);opacity:1}
@media (prefers-reduced-motion:reduce){.toast{transition:none}}

@media (max-width:560px){
  .topbar{padding:12px 16px}.siterail{padding:10px 16px}main{padding:16px}
  .clock{display:none}
}