:root{
  --navy:#0b1b63;
  --navy2:#09154d;
  --light:#f2f4f7;
  --card:#ffffff;
  --text:#0f172a;
  --muted:#64748b;
  --border:#e7eef2;

  --shadow:0 14px 40px rgba(15,23,42,.10);
  --shadowSoft:0 10px 26px rgba(15,23,42,.08);

  --accentBlue:#1d4ed8;
  --accentBlueSoft:rgba(29,78,216,.12);
  --accentRed:#ef4444;
  --accentRedSoft:rgba(239,68,68,.12);
  --accentOrange:#fb923c;

  --chipBg:#eef2ff;
  --radius:20px;
  --radius2:14px;

  --focus:rgba(29,78,216,.14);
}

*{ box-sizing:border-box }

body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  color:var(--text);
  background:var(--light);
}

.wrap{
  max-width:1200px;
  margin:0 auto;
  padding:26px 18px 34px;
}

/* header */
.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  margin-bottom:18px;
  padding:14px 0;
}

.brand{
  display:flex;
  align-items:center;
  gap:14px;
  min-width:260px;
}

.logo{
  width:58px;
  height:58px;
  border-radius:18px;
  display:grid;
  place-items:center;
  background:linear-gradient(180deg,#ffffff,#f7f9ff);
  border:1px solid var(--border);
  box-shadow:var(--shadowSoft);
  position:relative;
  overflow:hidden;
}

.logo svg{ width:44px; height:44px }

.brandtext{ line-height:1.05 }

.brandtext .name{
  font-weight:950;
  font-size:28px;
  letter-spacing:.2px;
}

.brandtext .name .red{ color:var(--accentRed) }
.brandtext .name .blue{ color:#3f5d8a }

.brandtext .sub{
  margin-top:6px;
  color:var(--muted);
  font-weight:750;
}

.btn{
  border:1px solid var(--border);
  background:#ffffff;
  color:#0f172a;
  padding:12px 16px;
  border-radius:12px;
  font-weight:950;
  cursor:pointer;
  box-shadow:var(--shadowSoft);
  transition:transform .08s ease, filter .08s ease, box-shadow .12s ease;
  user-select:none;
  white-space:nowrap;
}

.btn:hover{
  filter:brightness(.99);
  box-shadow:var(--shadow);
}

.btn:active{ transform:translateY(1px) }

.btn.primary{
  border-color:rgba(29,78,216,.30);
  background:linear-gradient(180deg, rgba(29,78,216,.16), rgba(29,78,216,.08));
}

.btn:focus, a:focus, input:focus, select:focus{
  outline:none;
  box-shadow:0 0 0 4px var(--focus);
}

/* layout grid */
.grid{
  display:grid;
  grid-template-columns:2.05fr .95fr;
  gap:18px;
  align-items:start;
}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}

.cardpad{ padding:18px }

.title{
  font-size:26px;
  font-weight:950;
  margin:0 0 12px 0;
}

/* chart card */
.chartwrap{
  padding:18px 18px 14px;
}

.charttop{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:14px;
  margin-bottom:10px;
}

.legend{
  display:flex;
  align-items:center;
  gap:10px;
  color:var(--muted);
  font-weight:850;
  padding:8px 2px 0;
}

.dot{
  width:10px;
  height:10px;
  border-radius:50%;
  background:var(--accentBlue);
  box-shadow:0 0 0 4px var(--accentBlueSoft);
}

.chartarea{
  border-radius:14px;
  background:linear-gradient(180deg,#ffffff 0%, #f7f9ff 100%);
  border:1px solid var(--border);
  padding:12px 12px 10px;
  position:relative;
  overflow:hidden;
}

canvas{
  display:block;
  width:100%;
  height:260px;
}

/* right column cards */
.stack{
  display:flex;
  flex-direction:column;
  gap:18px;
}

.kwhhead{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:12px;
  margin-bottom:12px;
}

.kwhhead h3{
  margin:0;
  font-size:20px;
  font-weight:950;
}

.kwhbig{
  font-size:48px;
  font-weight:950;
  letter-spacing:.2px;
  margin-top:6px;
  display:flex;
  align-items:baseline;
  gap:10px;
}

.kwhbig span{
  font-size:22px;
  font-weight:950;
  color:#24324a;
  opacity:.9;
}

.slider{
  margin-top:6px;
  height:16px;
  border-radius:999px;
  background:#eef2ff;
  border:1px solid var(--border);
  position:relative;
  overflow:hidden;
}

.slider .fill{
  height:100%;
  width:68%;
  background:linear-gradient(90deg, rgba(29,78,216,.85), rgba(29,78,216,.25));
}

.slider .knob{
  position:absolute;
  top:50%;
  left:68%;
  transform:translate(-50%,-50%);
  width:4px;
  height:42px;
  border-radius:999px;
  background:#0f172a;
  opacity:.55;
  box-shadow:0 12px 26px rgba(15,23,42,.18);
}

.estimate{
  display:flex;
  align-items:center;
  gap:10px;
  margin-top:12px;
  font-weight:950;
  font-size:26px;
  color:#0f172a;
}

.estimate small{
  font-size:18px;
  font-weight:850;
  color:var(--muted);
}

.flame{
  width:28px;
  height:28px;
  display:inline-grid;
  place-items:center;
}

.meterlog h3{
  margin:0 0 8px 0;
  font-size:20px;
  font-weight:950;
}

.meterlog .date{
  font-weight:950;
  font-size:22px;
  margin-bottom:4px;
}

.meterlog .line{
  color:var(--muted);
  font-weight:900;
  font-size:20px;
}

/* bottom tiles */
.tiles{
  grid-column:1 / -1;
  display:grid;
  grid-template-columns:repeat(3, 1fr);
  gap:18px;
  margin-top:18px;
}

.tile{
  position:relative;
  overflow:hidden;
}

.tile .room{
  font-size:26px;
  font-weight:950;
  margin:0 0 10px 0;
}

.tile .temp{
  font-size:58px;
  font-weight:950;
  color:var(--accentRed);
  letter-spacing:.2px;
  margin:0;
}

.tile .sensor{
  margin-top:4px;
  color:#365271;
  font-weight:950;
  font-size:18px;
}

.tile .bar{
  height:8px;
  border-radius:999px;
  margin:14px 0 14px;
  background:#f1f5ff;
  border:1px solid var(--border);
  overflow:hidden;
  position:relative;
}

.tile .bar > i{
  display:block;
  height:100%;
  width:78%;
  background:linear-gradient(90deg, rgba(239,68,68,.12), rgba(239,68,68,.32));
}

.tile .last{
  color:var(--muted);
  font-weight:900;
  margin-bottom:12px;
}

.tile .chip{
  display:flex;
  align-items:center;
  gap:10px;
  background:#f3f6ff;
  border:1px solid var(--border);
  border-radius:12px;
  padding:12px 12px;
  font-weight:950;
  color:#1b2a5a;
}

.lock{
  width:18px;
  height:18px;
  opacity:.85;
}

.radimg{
  position:absolute;
  right:10px;
  top:58px;
  width:120px;
  opacity:.55;
  filter:drop-shadow(0 10px 20px rgba(15,23,42,.12));
  pointer-events:none;
}

/* tooltip for canvas */
.tooltip{
  position:absolute;
  min-width:140px;
  padding:10px 12px;
  border-radius:12px;
  background:#0b1b33;
  color:#fff;
  font-weight:900;
  font-size:14px;
  box-shadow:0 16px 30px rgba(0,0,0,.25);
  transform:translate(-50%, calc(-100% - 14px));
  display:none;
  z-index:9999999;
}

.tooltip .t1{ opacity:.9; margin-bottom:6px }
.tooltip .t2{ font-size:18px }

.tooltip:after{
  content:"";
  position:absolute;
  left:50%;
  bottom:-8px;
  transform:translateX(-50%);
  width:0;
  height:0;
  border-left:8px solid transparent;
  border-right:8px solid transparent;
  border-top:8px solid #0b1b33;
}

.crosshair{
  position:absolute;
  top:0;
  width:1px;
  height:100%;
  background:rgba(29,78,216,.30);
  display:none;
  z-index:2;
}

.point{
  position:absolute;
  width:10px;
  height:10px;
  border-radius:50%;
  background:#fff;
  border:3px solid var(--accentBlue);
  box-shadow:0 10px 20px rgba(15,23,42,.18);
  display:none;
  z-index:3;
  transform:translate(-50%,-50%);
}

/* responsive */
@media (max-width: 980px){
  .grid{ grid-template-columns:1fr }
  .tiles{ grid-template-columns:1fr }
  canvas{ height:240px }
  .brandtext .name{ font-size:24px }
}