/* WYLA customer app — the approved mockup's design system, as real stylesheet.
   Single dark control-room theme, committed deliberately (not an omission).
   No CDN, no webfonts: system faces only, so it renders offline and identically
   on a rural laptop with no internet. */

:root{
  --bg:#0A111E; --panel:#101B2D; --panel-2:#0D1626; --line:#1D2B42; --line-soft:#16233A;
  --ink:#E9F0F9; --ink-mut:#8CA0BA; --ink-dim:#5C7089;
  --accent:#41B9DC; --accent-soft:rgba(65,185,220,.12);
  --good:#3FBF7F; --warn:#E9B23C; --fault:#E05656; --offline:#5C7089;
  --good-soft:rgba(63,191,127,.13); --warn-soft:rgba(233,178,60,.14);
  --fault-soft:rgba(224,86,86,.13); --offline-soft:rgba(92,112,137,.15);
  --disp:"Bahnschrift","Barlow Condensed","Arial Narrow",Arial,sans-serif;
  --body:"Segoe UI",system-ui,-apple-system,sans-serif;
  --r:10px;
}
*{box-sizing:border-box}
html,body{background:var(--bg);margin:0}
body{font-family:var(--body);color:var(--ink);font-size:14px;line-height:1.45}
button,input,select{font-family:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

/* ---------------------------------------------------------------- login */
.login{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;
  background:radial-gradient(1200px 800px at 30% 20%,#12233E 0%,#0A111E 60%,#070C16 100%)}
.login[hidden]{display:none}
.loginbox{width:340px;max-width:92vw;background:var(--panel);border:1px solid var(--line);
  border-radius:14px;padding:30px 28px;box-shadow:0 24px 80px rgba(0,0,0,.55)}
.loginbox .logo{display:flex;align-items:center;gap:12px;justify-content:center;margin-bottom:6px}
.drop{width:26px;height:26px;border-radius:50% 50% 50% 0;transform:rotate(-45deg);flex:0 0 auto;
  background:linear-gradient(135deg,var(--accent),#2478A8);box-shadow:0 0 14px rgba(65,185,220,.45)}
.loginbox .drop{width:34px;height:34px}
h1.brandmark{font-family:var(--disp);font-size:19px;letter-spacing:.06em;margin:0;font-weight:600;line-height:1.15}
h1.brandmark span{color:var(--accent)}
.loginbox .sub{text-align:center;font-size:11px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-dim);margin:6px 0 22px}
.login label{display:block;font-size:11px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--ink-dim);font-family:var(--disp);margin:12px 0 5px}
.login input,.login select{width:100%;background:#0B1322;border:1px solid var(--line);
  border-radius:8px;color:var(--ink);padding:11px 12px;font-size:13px}
.login .err{margin-top:12px;font-size:12px;color:var(--fault);min-height:1.2em}
.login .note{text-align:center;font-size:10.5px;color:var(--ink-dim);margin-top:16px}

/* ---------------------------------------------------------------- shell */
.app{display:flex;min-height:100vh}
.app[hidden]{display:none}
.rail{width:224px;flex:0 0 224px;background:var(--panel-2);border-right:1px solid var(--line);
  display:flex;flex-direction:column;padding:20px 0;position:sticky;top:0;height:100vh}
.brand{padding:0 20px 18px;border-bottom:1px solid var(--line-soft)}
.brand .logo{display:flex;align-items:center;gap:10px}
.brand .tag{font-size:10.5px;color:var(--ink-dim);letter-spacing:.14em;text-transform:uppercase;margin-top:6px}
.unit{padding:16px 20px;border-bottom:1px solid var(--line-soft)}
.eyebrow{font-family:var(--disp);font-size:10.5px;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-dim);margin-bottom:4px}
.unit .name{font-family:var(--disp);font-size:15px;letter-spacing:.03em}
.unit .own{font-size:12px;color:var(--ink-mut);margin-top:2px}
.unit select{width:100%;margin-top:8px;background:#0B1322;border:1px solid var(--line);
  border-radius:7px;color:var(--ink);padding:7px 9px;font-size:12.5px}
.nav{padding:14px 10px;display:flex;flex-direction:column;gap:2px}
.nav a{display:flex;align-items:center;gap:10px;color:var(--ink-mut);padding:9px 12px;
  border-radius:8px;font-size:13.5px;text-decoration:none;letter-spacing:.02em}
.nav a:hover{background:var(--panel);color:var(--ink)}
.nav a.on{background:var(--accent-soft);color:var(--accent);font-weight:600}
.nav svg{width:17px;height:17px;flex:0 0 17px;opacity:.9}
.railfoot{margin-top:auto;padding:16px 20px 0;border-top:1px solid var(--line-soft);
  font-size:11.5px;color:var(--ink-dim)}
.railfoot .row{display:flex;justify-content:space-between;margin-top:6px;gap:8px}
.led{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:6px;background:var(--offline)}
.led.on{background:var(--good);box-shadow:0 0 6px var(--good)}
.rolechip{display:inline-flex;align-items:center;gap:6px;font-family:var(--disp);font-size:10px;
  letter-spacing:.12em;padding:3px 9px;border-radius:999px;border:1px solid rgba(65,185,220,.4);
  color:var(--accent);background:var(--accent-soft)}
.linkbtn{background:none;border:0;color:var(--ink-dim);font-size:11px;cursor:pointer;
  padding:0;text-decoration:underline}
.linkbtn:hover{color:var(--accent)}

.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{display:flex;align-items:center;gap:14px;padding:14px 26px;border-bottom:1px solid var(--line);
  background:linear-gradient(180deg,rgba(65,185,220,.05),transparent);flex-wrap:wrap}
.topbar h2{font-family:var(--disp);font-size:20px;font-weight:600;letter-spacing:.04em;margin:0}
.crumb{font-size:11px;color:var(--ink-dim);letter-spacing:.14em;text-transform:uppercase}
.statuspill{display:inline-flex;align-items:center;gap:8px;font-family:var(--disp);letter-spacing:.08em;
  padding:7px 14px;border-radius:999px;font-size:13px;border:1px solid}
.statuspill .dot{width:9px;height:9px;border-radius:50%;background:currentColor;box-shadow:0 0 8px currentColor}
.statuspill.ok{background:var(--good-soft);border-color:rgba(63,191,127,.4);color:var(--good)}
.statuspill.warning{background:var(--warn-soft);border-color:rgba(233,178,60,.4);color:var(--warn)}
.statuspill.fault{background:var(--fault-soft);border-color:rgba(224,86,86,.45);color:var(--fault)}
.statuspill.offline,.statuspill.unknown{background:var(--offline-soft);border-color:var(--line);color:var(--ink-mut)}
.spacer{margin-left:auto}
.stack{display:flex;flex-direction:column;gap:3px;padding:5px;background:#0B1322;
  border:1px solid var(--line);border-radius:6px}
.stack i{width:22px;height:11px;border-radius:3px;background:#1A2436}
.stack i.r.lit{background:var(--fault);box-shadow:0 0 10px var(--fault)}
.stack i.y.lit{background:var(--warn);box-shadow:0 0 10px var(--warn)}
.stack i.g.lit{background:var(--good);box-shadow:0 0 10px var(--good)}

.content{padding:22px 26px 48px;display:flex;flex-direction:column;gap:18px}

/* ---------------------------------------------------------------- panels */
.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;min-width:0}
.panel h3{font-family:var(--disp);font-size:12px;font-weight:600;letter-spacing:.16em;
  text-transform:uppercase;color:var(--ink-mut);margin:0 0 14px;display:flex;align-items:center;gap:8px}
.panel h3 .right{margin-left:auto;font-size:11px;letter-spacing:.06em;color:var(--ink-dim);text-transform:none}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.grid23{display:grid;grid-template-columns:2fr 1fr;gap:18px}
.grid2>*,.grid23>*,.kpis>*{min-width:0}
@media(max-width:1100px){.grid2,.grid23{grid-template-columns:1fr}}

.kpis{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px}
.kpi{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px}
.kpi .lbl{font-family:var(--disp);font-size:10.5px;letter-spacing:.15em;text-transform:uppercase;color:var(--ink-dim)}
.kpi .num{font-family:var(--disp);font-size:26px;font-weight:600;margin-top:6px;font-variant-numeric:tabular-nums}
.kpi .num small{font-size:13px;color:var(--ink-mut);font-weight:400;margin-left:3px}
.kpi .sub{font-size:11.5px;color:var(--ink-mut);margin-top:4px}
.kpi.ok{box-shadow:inset 3px 0 0 var(--good)}
.kpi.warning{box-shadow:inset 3px 0 0 var(--warn)}
.kpi.fault{box-shadow:inset 3px 0 0 var(--fault)}
.kpi.offline{box-shadow:inset 3px 0 0 var(--offline)}
.kpi.info{box-shadow:inset 3px 0 0 var(--accent)}
.suspect{color:var(--warn)}

/* channel table */
.chan{display:grid;grid-template-columns:auto 1fr auto auto;gap:6px 12px;align-items:center;font-size:12.5px}
.chan .tag{font-family:var(--disp);font-size:11px;color:var(--ink-dim);letter-spacing:.1em}
.chan .v{font-variant-numeric:tabular-nums;font-weight:600;text-align:right}
.chan .u{color:var(--ink-dim);font-size:11px}
.chan .qd{width:8px;height:8px;border-radius:50%;background:var(--good)}
.chan .qd.bad{background:var(--warn)}
.chan .qd.calc{background:var(--accent)}

/* chips, alerts, tables, buttons */
.chip{font-family:var(--disp);font-size:10.5px;letter-spacing:.12em;padding:4px 10px;
  border-radius:999px;border:1px solid;white-space:nowrap}
.chip.ok{color:var(--good);border-color:rgba(63,191,127,.4);background:var(--good-soft)}
.chip.warning,.chip.yellow{color:var(--warn);border-color:rgba(233,178,60,.4);background:var(--warn-soft)}
.chip.fault,.chip.red{color:var(--fault);border-color:rgba(224,86,86,.4);background:var(--fault-soft)}
.chip.offline,.chip.info{color:var(--ink-mut);border-color:var(--line);background:var(--offline-soft)}
.alert{display:flex;gap:12px;padding:12px 14px;border-radius:8px;border:1px solid;align-items:flex-start;margin-bottom:10px}
.alert.yellow{background:var(--warn-soft);border-color:rgba(233,178,60,.35)}
.alert.red{background:var(--fault-soft);border-color:rgba(224,86,86,.35)}
.alert.info{background:var(--offline-soft);border-color:var(--line)}
.alert .sev{font-family:var(--disp);font-size:10px;letter-spacing:.14em;padding:3px 8px;
  border-radius:4px;flex:0 0 auto;margin-top:2px}
.alert.yellow .sev{background:var(--warn);color:#1A1405}
.alert.red .sev{background:var(--fault);color:#fff}
.alert.info .sev{background:var(--offline);color:#fff}
.alert .at{min-width:0}
.alert .at b{font-size:13px}
.alert .at div{font-size:12px;color:var(--ink-mut);margin-top:2px}
.alert .when{margin-left:auto;font-size:11px;color:var(--ink-dim);white-space:nowrap;font-variant-numeric:tabular-nums}
.btn{background:none;border:1px solid var(--line);color:var(--ink-mut);border-radius:7px;
  padding:7px 13px;font-size:12px;cursor:pointer;letter-spacing:.03em}
.btn:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}
.btn:disabled{opacity:.45;cursor:not-allowed}
.btn.pri{border-color:rgba(65,185,220,.5);color:var(--accent);background:var(--accent-soft)}
.btnrow{display:flex;gap:10px;flex-wrap:wrap;margin-top:12px}
.twrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:12.5px;min-width:560px}
th{font-family:var(--disp);font-size:10.5px;letter-spacing:.14em;text-transform:uppercase;
  color:var(--ink-dim);text-align:left;padding:8px 10px;border-bottom:1px solid var(--line)}
td{padding:9px 10px;border-bottom:1px solid var(--line-soft);font-variant-numeric:tabular-nums}
tr:last-child td{border-bottom:0}
.muted{color:var(--ink-mut)}
.dim{color:var(--ink-dim)}
/* Block, not flex: these carry prose with inline <b>/<i>, and flex would promote every
   inline child to a flex item — which silently reflows a sentence into columns. */
.empty{color:var(--ink-mut);font-size:12.5px;padding:10px 0;display:block}
.chart{width:100%;height:auto;display:block}
.legend{display:flex;gap:16px;font-size:11px;color:var(--ink-mut);margin-top:8px;flex-wrap:wrap}
.legend i{display:inline-block;width:10px;height:3px;border-radius:2px;margin-right:5px;vertical-align:middle}
.bar{height:9px;border-radius:5px;background:#0B1322;border:1px solid var(--line);overflow:hidden}
.bar i{display:block;height:100%;border-radius:5px;background:var(--accent)}
.bar i.warning{background:var(--warn)} .bar i.ok{background:var(--good)}
.life{margin-bottom:16px}
.life .lr{display:flex;justify-content:space-between;font-size:12.5px;margin-bottom:6px;gap:10px}
.life .foot{display:flex;justify-content:space-between;font-size:11px;color:var(--ink-dim);margin-top:5px}
.kv{display:flex;justify-content:space-between;border-bottom:1px solid var(--line-soft);
  padding:7px 0;font-size:12.5px;gap:12px}
.kv:last-child{border-bottom:0}
.kv b{font-variant-numeric:tabular-nums}
.banner{font-size:12px;border-radius:8px;padding:9px 13px;border:1px solid}
.banner.warn{color:var(--warn);background:var(--warn-soft);border-color:rgba(233,178,60,.3)}
.banner.err{color:var(--fault);background:var(--fault-soft);border-color:rgba(224,86,86,.35)}
.toast{position:fixed;right:18px;bottom:18px;z-index:200;display:flex;flex-direction:column;gap:8px}
.toast div{background:var(--panel);border:1px solid var(--line);border-left:3px solid var(--accent);
  border-radius:8px;padding:10px 14px;font-size:12.5px;box-shadow:0 10px 30px rgba(0,0,0,.5);max-width:340px}
.toast div.err{border-left-color:var(--fault)}
.toast div.ok{border-left-color:var(--good)}
.skel{background:linear-gradient(90deg,#12203A 25%,#17263F 50%,#12203A 75%);
  background-size:200% 100%;animation:sk 1.2s infinite;border-radius:6px;height:14px}
@keyframes sk{to{background-position:-200% 0}}

/* ---------------------------------------------------------------- site map topology */
/* The diagram has a minimum legible width, so on a phone it scrolls sideways inside
   its own container rather than squashing into unreadability — and the page body
   itself never scrolls horizontally. */
.topo{overflow-x:auto;-webkit-overflow-scrolling:touch;padding-bottom:4px}
.topo svg{min-width:820px;width:100%;height:auto;display:block}

/* ---- conduits. Three stacked strokes make a flat line read as round pipe: a dark
   casing, a coloured core, and the animated flow riding on top. */
.pipe .pcase{fill:none;stroke:#0A121D;stroke-width:7;stroke-linecap:round}
.pipe .pcore{fill:none;stroke:#33445C;stroke-width:3.4;stroke-linecap:round}
.pipe .pflow{fill:none;stroke:none;stroke-width:2;stroke-linecap:round}
.pipe.ok .pcore{stroke:var(--good)}
.pipe.wn .pcore{stroke:var(--warn)}
.pipe.fl .pcore{stroke:var(--fault);stroke-width:4.2}
.pipe.off .pcore{stroke:#2E3F55}
.pipe.ok .pflow,.pipe.wn .pflow{stroke:rgba(255,255,255,.75);stroke-dasharray:5 13;
  animation:tflow 1.15s linear infinite}
@keyframes tflow{to{stroke-dashoffset:-36}}

/* ---- device cards. One light source, top-left, for every face in the diagram. */
.card .cface{fill:url(#faceG);stroke:#2B3E58;stroke-width:1}
.card .cedge{fill:#0B1420}
.card .cspec{stroke:rgba(255,255,255,.14);stroke-width:1.4;fill:none;stroke-linecap:round}
.hub .hface{fill:url(#hubG);stroke:#3C6094;stroke-width:1.4}
.hub .hedge{fill:#08111C}
.hub .vent{fill:#0C1726;opacity:.85}
.card.fl .cface{stroke:rgba(224,86,86,.55)}
.card.wn .cface{stroke:rgba(233,178,60,.45)}

.led.ok{fill:var(--good)} .led.wn{fill:var(--warn)}
.led.fl{fill:var(--fault)} .led.off{fill:#38495F}
.tt1{fill:var(--ink);font-family:var(--disp);font-size:12.5px;letter-spacing:.04em;font-weight:600}
.tt2{fill:var(--accent);font-size:11px;font-variant-numeric:tabular-nums}
.tt3{fill:var(--ink-dim);font-size:8.5px;letter-spacing:.1em}
.maplegend svg{vertical-align:middle}

/* ---------------------------------------------------------------- operational views */
/* Small button for in-table actions (classify, end session). Table rows are dense, so
   the full-size .btn would force the row height up on every line. */
.btn.sm{padding:4px 9px;font-size:11px;border-radius:6px}
.btnrow.tight{margin-top:0;gap:5px}
/* A second, denser KPI band for panels that carry their own summary strip. */
.kpis.tight{grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;margin-bottom:14px}
.kpis.tight .kpi{padding:10px 12px}
.kpis.tight .kpi .num{font-size:20px;margin-top:4px}

/* Form controls on the support tab. */
.formrow{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:10px}
.formrow label,label.wide{display:flex;flex-direction:column;gap:5px;font-size:11px;
  letter-spacing:.1em;text-transform:uppercase;color:var(--ink-dim);
  font-family:var(--disp);min-width:0}
.formrow label{flex:1 1 180px}
label.wide{width:100%}
.formrow select,label.wide input,label.wide select{background:var(--panel-2);
  border:1px solid var(--line);border-radius:7px;color:var(--ink);padding:8px 10px;
  font-size:13px;font-family:inherit;letter-spacing:normal;text-transform:none;width:100%}
.formrow select:focus,label.wide input:focus{outline:2px solid var(--accent);outline-offset:-1px}

/* ---------------------------------------------------------------- impersonation bar */
/* Loud on purpose. The one way "view as customer" causes real harm is somebody
   forgetting they are in it and reading a customer's numbers as their own, so this sits
   above the content at every breakpoint and the way out never scrolls off screen. */
.impbar{display:flex;align-items:center;gap:12px;padding:9px 22px;
  background:linear-gradient(90deg,rgba(233,178,60,.18),rgba(233,178,60,.06));
  border-bottom:1px solid rgba(233,178,60,.45);flex-wrap:wrap}
.impbar .impdot{width:9px;height:9px;border-radius:50%;background:var(--warn);flex:0 0 9px;
  box-shadow:0 0 0 4px rgba(233,178,60,.18);animation:imppulse 1.8s ease-in-out infinite}
@keyframes imppulse{50%{box-shadow:0 0 0 8px rgba(233,178,60,.05)}}
.impbar .imptext{min-width:0;font-size:12.5px;display:flex;gap:10px;flex-wrap:wrap;align-items:baseline}
.impbar .imptext b{color:var(--warn)}
.impbar .imptext .dim{font-size:11.5px;font-variant-numeric:tabular-nums}
.impbar .btn{margin-left:auto;border-color:rgba(233,178,60,.5);color:var(--warn);flex:0 0 auto}
.impbar .btn:hover:not(:disabled){border-color:var(--warn);background:var(--warn-soft)}

/* ---------------------------------------------------------------- responsive */
.menubtn{display:none;background:var(--panel-2);border:1px solid var(--line);border-radius:8px;
  color:var(--ink);width:38px;height:38px;align-items:center;justify-content:center;cursor:pointer;flex:0 0 38px}
.menubtn svg{width:20px;height:20px}
.scrim{display:none;position:fixed;inset:0;background:rgba(4,8,15,.6);z-index:40}
.scrim.show{display:block}
@media(max-width:920px){
  .rail{position:fixed;left:-248px;top:0;transition:left .22s ease;z-index:50}
  .rail.open{left:0;box-shadow:24px 0 60px rgba(0,0,0,.5)}
  .menubtn{display:flex}
  .crumb{display:none}
  .topbar{padding:12px 14px}
  .content{padding:16px 14px 40px}
  .grid2,.grid23{grid-template-columns:1fr}
  .impbar{padding:9px 14px}
}
@media(max-width:620px){
  .topbar h2{font-size:17px}
  .kpis{grid-template-columns:repeat(2,minmax(0,1fr))}
  .kpi .num{font-size:21px}
  .kpi .sub{font-size:10.5px}
  .statuspill{font-size:11px;padding:6px 10px}
  .content{gap:14px}
  .panel{padding:13px 13px}
  .panel h3{flex-wrap:wrap}
  .panel h3 .right{margin-left:0;flex-basis:100%}
  /* Key/value rows stack rather than crushing a long value against its label. */
  .kv{flex-direction:column;gap:2px}
  .kv b{text-align:left}
  .btnrow{gap:8px}
  .btnrow .btn{flex:1 1 auto;min-width:0}
  .chan{grid-template-columns:auto 1fr auto auto;font-size:12px;gap:5px 8px}
  .alert{flex-wrap:wrap}
  .alert .when{margin-left:0;flex-basis:100%;margin-top:4px}
  .toast{left:12px;right:12px;bottom:12px}
  .toast div{max-width:none}
  /* The exit button drops to its own full-width row rather than being squeezed to a
     few pixels next to the session detail. */
  .impbar .btn{margin-left:0;flex:1 1 100%}
  .impbar .imptext{flex-direction:column;gap:1px}
  .kpis.tight{grid-template-columns:repeat(2,minmax(0,1fr))}
  .formrow label{flex:1 1 100%}
  /* In-table buttons are thumbed on a phone, not clicked. 26px tall is under the
     comfortable touch target, so give them height here without loosening the desktop
     row rhythm. They do not stretch: .btnrow.tight opts out of the flex:1 rule above. */
  .btn.sm{padding:9px 11px;font-size:11.5px}
  .btnrow.tight .btn{flex:0 0 auto}
}
/* Very narrow phones: one KPI per row beats two unreadable ones. */
@media(max-width:400px){
  .kpis{grid-template-columns:1fr}
  .kpis.tight{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){
  .skel{animation:none}
  /* Pipes keep their colour, which is what carries the meaning — only the flow stops. */
  .pipe .pflow{animation:none}
  /* The bar stays visually distinct without the pulse — colour and border carry it. */
  .impbar .impdot{animation:none}
}