:root {
  color-scheme: dark;
  --bg: #061511;
  --panel: #0c241e;
  --panel-2: #102e26;
  --line: rgba(196, 255, 230, 0.13);
  --text: #f2fff9;
  --muted: #8fb7a8;
  --green: #45e59a;
  --green-2: #10b873;
  --cyan: #65d9e4;
  --orange: #ffbb6b;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-width: 320px;
  color: var(--text);
  background:
    radial-gradient(circle at 80% -10%, rgba(16,184,115,.18), transparent 32rem),
    linear-gradient(180deg, #071b16, var(--bg) 45%);
  font: 15px/1.5 Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.topbar {
  height: 74px;
  padding: 0 max(24px, calc((100vw - 1240px) / 2));
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
  background: rgba(6,21,17,.72);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand { color: inherit; text-decoration: none; display: flex; gap: 12px; align-items: center; }
.brand-mark {
  width: 42px; height: 42px; display: block; object-fit: contain;
  filter: brightness(1.55) contrast(1.06) drop-shadow(0 8px 18px rgba(0,0,0,.35));
}
.brand strong, .brand small { display: block; }
.brand strong { letter-spacing: -.02em; font-size: 17px; }
.brand small { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .12em; }
.connection { display: flex; align-items: center; gap: 9px; color: var(--muted); font-size: 13px; }
.connection span:first-child { width: 8px; height: 8px; border-radius: 99px; background: #e4a957; box-shadow: 0 0 0 5px rgba(228,169,87,.1); }
.connection.live span:first-child { background: var(--green); box-shadow: 0 0 0 5px rgba(69,229,154,.1); }

main { width: min(1240px, calc(100% - 48px)); margin: 0 auto; padding-bottom: 64px; }
.hero { padding: 66px 0 38px; display: flex; justify-content: space-between; align-items: end; gap: 30px; }
.eyebrow { margin: 0 0 8px; color: var(--green); font-size: 11px; font-weight: 800; letter-spacing: .18em; }
h1 { margin: 0; font-size: clamp(42px, 7vw, 74px); line-height: .95; letter-spacing: -.055em; }
.hero-copy { color: var(--muted); margin: 18px 0 0; font-size: 17px; }
.hero-meta { text-align: right; padding-bottom: 4px; }
.hero-meta span { color: var(--green); font-weight: 800; }
.hero-meta strong, .hero-meta small { display: block; }
.hero-meta strong { margin-top: 4px; font-size: 19px; }
.hero-meta small { color: var(--muted); margin-top: 4px; }

.metric-grid { display: grid; grid-template-columns: 1.25fr repeat(3, 1fr); gap: 14px; }
.metric, .panel { border: 1px solid var(--line); border-radius: 20px; background: linear-gradient(145deg, rgba(16,46,38,.92), rgba(10,31,25,.94)); }
.metric { min-height: 175px; padding: 24px; }
.metric-primary { background: linear-gradient(145deg, rgba(21,75,55,.94), rgba(10,41,31,.96)); }
.metric p { margin: 0 0 18px; color: var(--muted); }
.metric h2 { margin: 0 0 14px; font-size: 34px; letter-spacing: -.04em; }
.metric h2 small { font-size: 14px; color: var(--muted); letter-spacing: 0; font-weight: 600; }
.metric > small { color: var(--muted); }
.power-track { height: 5px; background: rgba(255,255,255,.1); border-radius: 9px; overflow: hidden; margin: 22px 0 11px; }
.power-track span { display: block; width: 0; height: 100%; background: linear-gradient(90deg, var(--green), #d7ff83); transition: width .7s ease; }

.content-grid { display: grid; grid-template-columns: 1.55fr 1fr; gap: 14px; margin-top: 14px; }
.panel { padding: 28px; }
.panel-heading { display: flex; justify-content: space-between; align-items: center; gap: 20px; margin-bottom: 28px; }
.panel-heading h2 { margin: 0; font-size: 22px; letter-spacing: -.025em; }
.pill { color: var(--muted); border: 1px solid var(--line); border-radius: 99px; padding: 6px 11px; font-size: 12px; }
.balance-row { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.balance-row > div { display: grid; grid-template-columns: 10px 1fr; column-gap: 10px; }
.balance-row p { margin: 0; color: var(--muted); }
.balance-row strong { grid-column: 2; font-size: 22px; }
.legend { width: 8px; height: 8px; border-radius: 2px; margin-top: 7px; }
.legend.export { background: var(--green); }
.legend.import { background: var(--cyan); }
.balance-visual { height: 80px; display: flex; align-items: end; gap: 7px; margin: 28px 0 18px; }
.bar { height: 28px; border-radius: 7px; display: flex; align-items: center; justify-content: end; padding-right: 12px; color: #041711; font-weight: 900; }
.export-bar { width: 100%; background: linear-gradient(90deg, var(--green-2), var(--green)); }
.import-bar { width: 74.5%; background: linear-gradient(90deg, #45a9b8, var(--cyan)); }
.net-result { display: flex; justify-content: space-between; align-items: center; border-top: 1px solid var(--line); padding-top: 18px; }
.net-result span { color: var(--muted); }
.net-result strong { font-size: 20px; color: var(--green); }
.caution { color: #bda27f; font-size: 12px; margin: 20px 0 0; }
.details-panel dl { margin: 0; }
.details-panel dl div { display: flex; justify-content: space-between; gap: 20px; padding: 13px 0; border-top: 1px solid var(--line); }
.details-panel dt { color: var(--muted); }
.details-panel dd { margin: 0; font-weight: 650; text-align: right; }

.latest-bill-panel, .fenaka-history-panel { margin-top: 14px; }
.latest-bill-panel { background: linear-gradient(145deg, rgba(19,72,53,.96), rgba(10,37,29,.96)); }
.savings-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.savings-grid > div { min-height: 150px; padding: 20px; border: 1px solid var(--line); border-radius: 16px; background: rgba(2,18,13,.24); }
.savings-grid p { margin: 0 0 14px; color: var(--muted); }
.savings-grid strong { display: block; margin-bottom: 8px; font-size: clamp(27px, 3vw, 38px); letter-spacing: -.04em; }
.savings-grid strong small { font-size: 12px; color: var(--muted); letter-spacing: 0; }
.savings-grid div > span { color: var(--muted); font-size: 12px; }
.savings-grid .savings-highlight { border-color: rgba(69,229,154,.38); background: rgba(69,229,154,.09); }
.savings-grid .savings-highlight strong { color: var(--green); }
.estimate-detail { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 12px; }
.estimate-detail span { padding: 13px 16px; border-radius: 12px; background: rgba(2,18,13,.24); color: var(--muted); font-size: 12px; }
.estimate-detail b { display: block; color: var(--text); font-size: 14px; }
.panel-subtitle { margin: 6px 0 0; color: var(--muted); font-size: 13px; }
.table-scroll { overflow-x: auto; }
.billing-table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
.billing-table th, .billing-table td { padding: 14px 12px; border-top: 1px solid var(--line); text-align: right; white-space: nowrap; }
.billing-table th:first-child, .billing-table td:first-child { padding-left: 0; text-align: left; }
.billing-table th:last-child, .billing-table td:last-child { padding-right: 0; }
.billing-table th { color: var(--muted); font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: .08em; }
.billing-table tbody tr:first-child td { color: var(--green); font-weight: 750; }
.billing-table .empty-row { padding: 34px 0; color: var(--muted); text-align: center; }

.chart-panel { margin-top: 14px; min-height: 360px; }
button { border: 0; border-radius: 10px; padding: 10px 15px; cursor: pointer; color: #042016; background: var(--green); font-weight: 800; }
button:disabled { opacity: .55; cursor: wait; }
.history-chart { min-height: 245px; display: grid; place-items: center; color: var(--muted); }
.history-chart svg { width: 100%; height: 260px; overflow: visible; }
.chart-line { fill: none; stroke: var(--green); stroke-width: 4; stroke-linecap: round; stroke-linejoin: round; }
.chart-fill { fill: url(#area); opacity: .28; }
.grid-line { stroke: rgba(255,255,255,.08); stroke-width: 1; }

footer { color: #668c7f; text-align: center; border-top: 1px solid var(--line); padding: 24px; font-size: 12px; }

@media (max-width: 900px) {
  .metric-grid { grid-template-columns: 1fr 1fr; }
  .content-grid { grid-template-columns: 1fr; }
  .savings-grid { grid-template-columns: 1fr; }
}
@media (max-width: 580px) {
  main { width: min(100% - 28px, 1240px); }
  .topbar { padding: 0 16px; }
  .hero { padding-top: 42px; display: block; }
  .hero-meta { text-align: left; margin-top: 24px; }
  .metric-grid { grid-template-columns: 1fr; }
  .estimate-detail { grid-template-columns: 1fr; }
  .panel, .metric { padding: 21px; }
}