:root {
  --bg: #f6f7f9;
  --card: #ffffff;
  --text: #1b1f24;
  --muted: #667085;
  --line: #e4e7ec;
  --accent: #1f6feb;
  --up: #12805c;
  --down: #c4320a;
  --warn-bg: #fff4e5;
  --warn: #b54708;
  --info-bg: #eef4ff;
  --info: #3538cd;
  --ok-bg: #e7f6ee;
  /* Chart series, validated as a set for both themes (dataviz palette, slots 1-3). */
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --series-3: #1baf7a;
  color-scheme: light dark;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216;
    --card: #171b21;
    --text: #e6e8eb;
    --muted: #98a2b3;
    --line: #2a313b;
    --accent: #5b9bff;
    --up: #3ccf91;
    --down: #ff7a59;
    --warn-bg: #3a2a12;
    --warn: #ffb547;
    --info-bg: #1e2550;
    --info: #a4bcfd;
    --ok-bg: #12352a;
    --series-1: #3987e5;
    --series-2: #d95926;
    --series-3: #199e70;
  }
}

* { box-sizing: border-box; }
/* `hidden` must win over the display rules below, or the login form stays visible after sign-in. */
[hidden] { display: none !important; }

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

main { max-width: 1100px; margin: 0 auto; padding: 16px; }
h1 { font-size: 22px; margin: 0 0 8px; }
h2 { font-size: 15px; margin: 0 0 12px; }
.sub { color: var(--muted); font-size: 13px; margin: 4px 0; }
.error { color: var(--down); min-height: 1em; }

header { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.pages { display: flex; gap: 16px; }
.pages a { color: var(--muted); text-decoration: none; font-weight: 600; padding: 4px 0; border-bottom: 2px solid transparent; }
.pages a.active { color: var(--text); border-bottom-color: var(--accent); }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; margin-top: 12px; }
.tab {
  border: 1px solid var(--line); background: var(--card); color: var(--text);
  padding: 6px 14px; border-radius: 8px; cursor: pointer; font: inherit;
}
.tab.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.who { color: var(--muted); font-size: 13px; }
.link { background: none; border: 0; color: var(--accent); cursor: pointer; font: inherit; padding: 0; }

.kpis { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 10px; margin: 12px 0 4px; }
.kpi, .card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 14px; }
.card { margin: 12px 0; }
.kpi .label { color: var(--muted); font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.kpi .note { margin-top: 4px; }
.kpi.mine { border-color: var(--accent); }
.kpi .value { font-size: 22px; font-weight: 600; margin: 2px 0; font-variant-numeric: tabular-nums; }
.kpi .delta { color: var(--muted); font-size: 12px; font-variant-numeric: tabular-nums; }
.up { color: var(--up); }
.down { color: var(--down); }
.stub p { color: var(--muted); margin: 0; }

.chart { position: relative; }
.chart svg { display: block; overflow: visible; }
.chart .grid { stroke: var(--line); stroke-width: 1; }
.chart .grid.zero { stroke: var(--muted); stroke-opacity: 0.6; }
.chart .tick { fill: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.chart .line { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart .cross { stroke: var(--muted); stroke-width: 1; }
.chart .dot { stroke: var(--card); stroke-width: 2; }
.chart .partial-dot { fill: var(--card); stroke-width: 2; }
.chart .panel-title { fill: var(--text); font-size: 12px; font-weight: 600; }
.chart-tip {
  position: absolute; top: 0; z-index: 2; pointer-events: none; min-width: 170px;
  background: var(--card); border: 1px solid var(--line); border-radius: 8px; padding: 8px 10px;
  box-shadow: 0 4px 16px rgb(0 0 0 / 0.25); font-size: 13px; display: grid; gap: 3px;
}
.chart-tip.below { position: static; box-shadow: none; margin-top: 6px; min-width: 0; }
.chart-tip .tip-head { color: var(--muted); font-size: 12px; }
.chart-tip .tip-row { display: flex; align-items: center; gap: 6px; white-space: nowrap; }
.tip-key, .legend-key { display: inline-block; width: 12px; height: 2px; border-radius: 1px; flex: none; }
.chart-note { display: flex; flex-wrap: wrap; gap: 4px 16px; align-items: center; margin: -2px 0 6px; }
.legend { display: flex; gap: 14px; font-size: 13px; }
.legend > span { display: inline-flex; align-items: center; gap: 6px; }
.card-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.card-head h2 { margin: 0; }
.card-head .filters { margin: 0; }
.tabs.small { margin: 0; }
.tabs.small .tab { padding: 4px 10px; font-size: 13px; }

.alerts { margin: 0; padding-left: 18px; }
.alerts li { margin: 4px 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.alerts .ok { color: var(--up); list-style: none; margin-left: -18px; }

.filters { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 8px; }
.filters input[type="search"], .filters select, #chart-device {
  font: inherit; padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--bg); color: var(--text);
}
.filters input[type="search"] { flex: 1 1 180px; }
.check { color: var(--muted); font-size: 13px; display: flex; gap: 6px; align-items: center; }

table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 500; font-size: 13px; white-space: nowrap; }
th.sortable { cursor: pointer; user-select: none; }
.num { text-align: right; white-space: nowrap; }
.badge { background: var(--warn-bg); color: var(--warn); border-radius: 6px; padding: 2px 8px; font-size: 13px; }
.n { color: var(--muted); font-weight: 400; }
.badge.ok { background: var(--ok-bg); color: var(--up); }
.badge.info { background: var(--info-bg); color: var(--info); }

.detail { display: grid; gap: 6px; font-size: 14px; }
.detail-head { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.detail .badge { white-space: normal; }

/* Machines: cards in a grid, one column on phones. */
.machines { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 32px 28px; margin-top: 8px; }
.machine .addr { font-weight: 600; word-break: break-word; }
.machine > .sub { margin: 2px 0 8px; }
.detail { background: var(--bg); border-radius: 10px; padding: 10px; font-size: 14px; }
.detail .grid { width: 100%; table-layout: fixed; }
.detail .grid th, .detail .grid td { padding: 5px 0; font-size: 14px; border-top: 1px solid var(--line); border-bottom: 0; }
.detail .grid thead th { font-size: 12px; border-top: 0; color: var(--muted); font-weight: 400; }
.detail .grid th:first-child, .detail .grid td:first-child { width: 28%; white-space: normal; }
.filters #phone-sort { font: inherit; padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--text); }
.filters .check { margin-left: auto; }

@media (max-width: 720px) {
  main { padding: 12px; }
  .card { padding: 12px; }
  .k-revenue { order: 1; }
  .k-share { order: 2; }
  .k-liters { order: 3; }
  .k-sales { order: 4; }
  .k-rev-device { order: 5; }
  .k-liters-device { order: 6; }
  .k-avg { order: 7; }
  .machines { grid-template-columns: 1fr; }
  /* Search on its own line, then sorting on the left and the problems filter on the right. */
  .filters input[type="search"] { flex: 1 1 100%; }
}

.login {
  max-width: 320px; margin: 15vh auto; padding: 24px; display: grid; gap: 12px;
  background: var(--card); border: 1px solid var(--line); border-radius: 12px;
}
.login label { display: grid; gap: 4px; color: var(--muted); font-size: 13px; }
.login input {
  font: inherit; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px;
  background: var(--bg); color: var(--text);
}
.login button {
  font: inherit; padding: 9px; border: 0; border-radius: 8px; background: var(--accent); color: #fff; cursor: pointer;
}