/* EnergyLink - one small stylesheet, calm operator UI */
:root {
  --bg: #f5f6f4;
  --surface: #ffffff;
  --text: #1f2a24;
  --muted: #66736b;
  --line: #dfe4df;
  --accent: #2f6f4e;
  --accent-soft: #e5f0ea;
  --warn: #9a5b00;
  --warn-soft: #fbf0dc;
  --error: #a32a2a;
  --error-soft: #f8e3e3;
  --radius: 8px;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  font-size: 15px;
  color: var(--text);
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); line-height: 1.45; }
main { max-width: 1280px; margin: 0 auto; padding: 20px 16px 40px; }
footer { text-align: center; color: var(--muted); font-size: 12px; padding: 16px; }
h1 { font-size: 22px; margin: 4px 0 16px; }
h2 { font-size: 16px; margin: 0 0 10px; }
a { color: var(--accent); }
code { font-family: ui-monospace, Consolas, monospace; font-size: 13px; }
.muted { color: var(--muted); }

.topbar { display: flex; align-items: center; gap: 20px; padding: 10px 20px; background: var(--surface);
  border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.brand { font-weight: 700; text-decoration: none; color: var(--accent); font-size: 18px; }
.topbar nav { display: flex; gap: 4px; flex-wrap: wrap; flex: 1; }
.topbar nav a { text-decoration: none; color: var(--text); padding: 6px 10px; border-radius: 6px; }
.topbar nav a.active, .topbar nav a:hover { background: var(--accent-soft); color: var(--accent); }
.logout { margin: 0; }

.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 16px; margin-bottom: 16px; overflow-x: auto; }
.card.narrow { max-width: 380px; margin: 40px auto; }
.cardhead, .pagehead { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.pagehead h1 { margin-bottom: 12px; }
.grid2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(420px, 1fr)); gap: 16px; }
.grid2 > .card { margin-bottom: 0; }
.grid2 { margin-bottom: 16px; }

.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kpi { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px;
  display: flex; flex-direction: column; }
.kpi .label { color: var(--muted); font-size: 13px; }
.kpi .value { font-size: 26px; font-weight: 650; font-variant-numeric: tabular-nums; }
.kpi .sub { color: var(--muted); font-size: 12px; }
.kpi.warn { border-color: #e7c78f; background: var(--warn-soft); }
.kpis.small .value { font-size: 20px; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 6px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: .03em; }
td.r, th.r { text-align: right; font-variant-numeric: tabular-nums; }
tr.muted td { color: var(--muted); }
table.inner td { border: 0; padding: 2px 6px; font-size: 13px; }
.src { font-size: 13px; word-break: break-all; }
.warn-text { color: var(--warn); font-weight: 600; }

.pill, .badge { display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; background: var(--line); }
.pill.ok { background: var(--accent-soft); color: var(--accent); }
.pill.warn, .badge.warn { background: var(--warn-soft); color: var(--warn); }

.flash { padding: 10px 12px; border-radius: var(--radius); margin-bottom: 12px; background: var(--accent-soft); }
.flash.error { background: var(--error-soft); color: var(--error); }

form { margin: 0; }
form.inline { display: flex; gap: 10px; align-items: end; flex-wrap: wrap; }
form.inline.tight { gap: 4px; }
form.stack { display: flex; flex-direction: column; gap: 10px; }
.formgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 10px 16px; align-items: end;
  margin-top: 12px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--muted); }
label.check { flex-direction: row; align-items: center; color: var(--text); }
input, select, button { font: inherit; padding: 6px 8px; border: 1px solid var(--line); border-radius: 6px;
  background: var(--surface); color: var(--text); }
button { cursor: pointer; }
button:hover { border-color: var(--accent); }
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
button.link { border: 0; background: none; color: var(--accent); padding: 0; }
dl.facts { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; margin: 0 0 12px; }
dl.facts dt { color: var(--muted); }
dl.facts dd { margin: 0; }
summary { cursor: pointer; }

@media (max-width: 640px) {
  .grid2 { grid-template-columns: 1fr; }
  main { padding: 12px 16px 32px; }
}