:root {
  --bg: #f4f6f9;
  --surface: #ffffff;
  --text: #17202b;
  --muted: #5d6b7a;
  --border: #e1e6ec;
  --accent: #0b6bcb;
  --accent-soft: #e3effb;
  --accent-text: #ffffff;
  --warn: #b25e00;
  --ok: #1d7f4e;
  --grid: rgba(23, 32, 43, 0.08);
  --shadow: 0 1px 2px rgba(16, 24, 40, 0.06), 0 1px 3px rgba(16, 24, 40, 0.08);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e141b;
    --surface: #161e27;
    --text: #e6ebf1;
    --muted: #93a1b0;
    --border: #26313d;
    --accent: #4ea3f5;
    --accent-soft: #15314d;
    --accent-text: #08121c;
    --warn: #f0a548;
    --ok: #4cc38a;
    --grid: rgba(230, 235, 241, 0.08);
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

html, body { margin: 0; }

body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding-inline: max(16px, env(safe-area-inset-left, 0px));
}

.muted { color: var(--muted); }
.small { font-size: 0.85rem; }

/* Header */
.top {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 5;
  padding-top: env(safe-area-inset-top, 0px);
}
.top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 56px;
}
h1 {
  font-size: 1.15rem;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}
.drop { width: 22px; height: 22px; fill: var(--accent); }
h2 { font-size: 1.1rem; margin: 0; }

main { padding-block: 16px 32px; display: grid; gap: 16px; }

/* Meter-kaarten */
.meters {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 12px;
}
.meter {
  text-align: left;
  font: inherit;
  color: inherit;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px;
  box-shadow: var(--shadow);
  cursor: pointer;
  display: grid;
  gap: 6px;
}
.meter:hover { border-color: var(--accent); }
.meter[aria-pressed="true"] { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
.meter-name { font-weight: 600; display: flex; justify-content: space-between; gap: 8px; }
.meter-stand { font-size: 1.5rem; font-weight: 650; font-variant-numeric: tabular-nums; }
.meter-stand small { font-size: 0.8rem; font-weight: 500; color: var(--muted); margin-left: 4px; }
.meter-meta { display: flex; flex-wrap: wrap; gap: 4px 12px; font-size: 0.85rem; color: var(--muted); }
.dot { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--ok); margin-right: 6px; }
.dot.stale { background: var(--warn); }

/* Paneel */
.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 16px;
  box-shadow: var(--shadow);
  display: grid;
  gap: 14px;
  min-width: 0;
}
.panel-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 12px; flex-wrap: wrap; }
.panel-head p { margin: 2px 0 0; }

.select-wrap { display: grid; gap: 2px; }
select, input[type="date"] {
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 10px;
  min-height: 36px;
}

/* Knoppengroepen */
.controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.seg {
  display: inline-flex;
  flex-wrap: wrap;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 3px;
  gap: 2px;
  max-width: 100%;
}
.seg button {
  font: inherit;
  font-size: 0.9rem;
  color: var(--muted);
  background: transparent;
  border: 0;
  border-radius: 7px;
  padding: 6px 12px;
  min-height: 34px;
  cursor: pointer;
}
.seg button:hover { color: var(--text); }
.seg button[aria-pressed="true"] { background: var(--accent); color: var(--accent-text); }
.seg-view { justify-self: start; }
.counter-part { display: grid; gap: 14px; min-width: 0; }

.custom { display: flex; flex-wrap: wrap; gap: 8px 12px; }
.custom label { display: flex; align-items: center; gap: 6px; font-size: 0.9rem; color: var(--muted); }

/* Kerncijfers */
.kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 10px;
}
.kpi { background: var(--bg); border-radius: 10px; padding: 10px 12px; }
.kpi-label { font-size: 0.8rem; color: var(--muted); }
.kpi-value { font-size: 1.25rem; font-weight: 650; font-variant-numeric: tabular-nums; }
.kpi-value small { font-size: 0.75rem; font-weight: 500; color: var(--muted); margin-left: 3px; }

/* Grafiek */
.chart-box { position: relative; height: 340px; min-width: 0; }
.chart-small { height: 220px; }
.chart-msg {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  margin: 0;
  text-align: center;
  padding: 16px;
}

/* Tabel */
.table-box summary { cursor: pointer; color: var(--accent); font-weight: 500; padding: 4px 0; }
.table-scroll { overflow-x: auto; max-height: 420px; overflow-y: auto; margin-top: 8px; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; font-size: 0.9rem; }
th, td { padding: 6px 10px; border-bottom: 1px solid var(--border); text-align: right; white-space: nowrap; }
th:first-child, td:first-child { text-align: left; }
th { position: sticky; top: 0; background: var(--surface); color: var(--muted); font-weight: 500; }
tr.nodata td { color: var(--muted); }
.gap { color: var(--warn); margin-left: 2px; }

@media (max-width: 600px) {
  .chart-box { height: 280px; }
  .seg button { padding: 6px 9px; }
  .meter-stand { font-size: 1.3rem; }
  .panel { padding: 14px; }
}