:root {
  color-scheme: light;
  --bg: #f4f1ea;
  --ink: #1c2430;
  --muted: #5c6775;
  --line: #ddd4c4;
  --card: #fff;
  --brand: #1f4d3a;
  --import: #c4552a;
  --export: #2f7d4a;
  --batt: #1f6f8b;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  font: 15px/1.45 "Avenir Next", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--bg);
}
.banner {
  background: #6b2d2d;
  color: white;
  text-align: center;
  font-size: 12px;
  letter-spacing: 0.04em;
  padding: 8px 12px;
}
header, .months, .kpis, .note, .card { margin: 16px auto; max-width: 1100px; padding: 0 16px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
h1 { margin: 0 0 6px; font-size: 28px; }
h2 { margin: 0; font-size: 16px; }
.eyebrow { margin: 0; color: var(--brand); font-weight: 700; letter-spacing: 0.06em; text-transform: uppercase; font-size: 12px; }
.lede, .note { color: var(--muted); }
.downloads { margin: 8px 0 0; }
.downloads a { color: var(--brand); font-weight: 650; }
.auth-screen { min-height: calc(100vh - 40px); display: grid; place-items: center; padding: 24px 16px 48px; }
.auth-card { width: min(440px, 100%); background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 28px 24px; }
.auth-card label { display: block; font-size: 13px; font-weight: 700; margin: 12px 0 6px; }
.auth-card input { width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 8px; font: inherit; }
.auth-card button[type="submit"] { width: 100%; margin-top: 18px; background: var(--brand); color: white; border: 0; border-radius: 8px; padding: 12px; font: inherit; font-weight: 700; cursor: pointer; }
.auth-switch { text-align: center; }
.auth-switch a { color: var(--brand); }
.auth-error { background: #fdecea; color: #8a2b2b; border-radius: 8px; padding: 10px 12px; }
.session-strip { max-width: 1100px; margin: 12px auto 0; padding: 0 16px; display: flex; justify-content: space-between; gap: 12px; align-items: center; flex-wrap: wrap; }
.session-who { margin: 0; color: var(--muted); }
.session-actions { display: flex; gap: 8px; }
.session-actions button, #admin-rows button { border: 1px solid var(--line); background: var(--card); border-radius: 8px; padding: 6px 10px; font: inherit; cursor: pointer; }
.admin-panel { margin-top: 12px; }

.months, .kpis { display: flex; flex-wrap: wrap; gap: 8px; }
.months button, .kpis article {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 10px;
  padding: 8px 12px;
}
.months button { font: inherit; cursor: pointer; }
.months button[aria-current="true"] { background: var(--brand); color: white; border-color: var(--brand); }
.kpis article { min-width: 140px; }
.kpis strong { display: block; font-size: 18px; }
.kpis span { color: var(--muted); font-size: 12px; }
.head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 8px; }
svg { width: 100%; height: auto; }
.axis { fill: var(--muted); font-size: 11px; }
.import { fill: var(--import); }
.export { fill: var(--export); }
.charge { fill: var(--batt); opacity: 0.85; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { padding: 6px 8px; border-bottom: 1px solid var(--line); text-align: left; }
.num { text-align: right; font-variant-numeric: tabular-nums; }
.table-scroll { overflow-x: auto; }