/* EMS Telemetria - dark dashboard, no external assets. */
:root {
  --bg: #0b1017;
  --bg-soft: #111a24;
  --card: #141f2b;
  --card-2: #182634;
  --line: #223244;
  --fg: #e7eef6;
  --fg-dim: #9fb0c3;
  --fg-mute: #6d8299;

  --pv: #f2c14e;
  --grid: #5aa9e6;
  --load: #d97a6c;
  --batt: #6fcf97;
  --soc: #7f8cff;
  --price-buy: #e6a5cf;
  --price-sell: #7bd4c4;

  --ok: #48c78e;
  --warn: #f0a04b;
  --err: #ef6f6c;

  --radius: 14px;
  --shadow: 0 1px 0 rgba(255, 255, 255, .03), 0 8px 24px rgba(0, 0, 0, .35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.45 "Segoe UI", Roboto, "Helvetica Neue", system-ui, -apple-system, sans-serif;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { margin: 0; font-weight: 600; }
h1 { font-size: 1.05rem; letter-spacing: .01em; }
h2 { font-size: .95rem; }
h3 { font-size: .78rem; color: var(--fg-dim); text-transform: uppercase; letter-spacing: .08em; }
p { margin: 0; }
.muted { color: var(--fg-mute); }

/* ---------- top bar ---------- */
.topbar {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  background: linear-gradient(180deg, var(--bg-soft), rgba(17, 26, 36, .6));
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(6px);
}

.brand { display: flex; align-items: center; gap: 12px; }
.logo { width: 34px; height: 34px; flex: none; }
.logo rect { fill: #0f1720; }
.logo path { fill: var(--pv); }
.sub { font-size: .74rem; color: var(--fg-mute); }

.controls { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 10px; }

.field { display: flex; flex-direction: column; gap: 4px; }
.field > span { font-size: .68rem; text-transform: uppercase; letter-spacing: .08em; color: var(--fg-mute); }
.field.grow { flex: 1 1 200px; }

select, input, button {
  font: inherit;
  color: var(--fg);
  background: var(--card-2);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 7px 10px;
}
select:focus-visible, input:focus-visible, button:focus-visible {
  outline: 2px solid var(--grid);
  outline-offset: 1px;
}
button { cursor: pointer; background: #1d3145; border-color: #2a4560; }
button:hover { background: #234; }
button.ghost { background: transparent; }
button.ghost:hover { background: var(--card-2); }
button.small { padding: 4px 8px; font-size: .8rem; }
button.danger { border-color: #5d2a2a; color: #ffb4b1; }
button.danger:hover { background: #3a1e1e; }

.range-group { display: flex; border: 1px solid var(--line); border-radius: 9px; overflow: hidden; }
.range-group button { border: 0; border-radius: 0; background: transparent; padding: 7px 12px; }
.range-group button + button { border-left: 1px solid var(--line); }
.range-group button.active { background: #1d3145; color: #fff; }

/* ---------- layout ---------- */
main { padding: 18px 20px 28px; display: flex; flex-direction: column; gap: 18px; max-width: 1500px; margin: 0 auto; }

.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px 16px;
}
.card-head { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }

.status {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
}
.card-status { grid-column: span 2; min-width: 260px; }

.badge {
  font-size: .72rem;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--fg-dim);
  white-space: nowrap;
}
.badge.online { background: rgba(72, 199, 142, .13); border-color: rgba(72, 199, 142, .45); color: var(--ok); }
.badge.offline { background: rgba(239, 111, 108, .12); border-color: rgba(239, 111, 108, .45); color: var(--err); }
.badge.disabled { background: rgba(240, 160, 75, .12); border-color: rgba(240, 160, 75, .45); color: var(--warn); }

.kv { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 10px 16px; margin: 0; }
.kv dt { font-size: .68rem; text-transform: uppercase; letter-spacing: .07em; color: var(--fg-mute); }
.kv dd { margin: 2px 0 0; font-variant-numeric: tabular-nums; }

.metric .value { font-size: 1.65rem; font-weight: 600; margin-top: 6px; font-variant-numeric: tabular-nums; letter-spacing: -.01em; }
.metric .hint { font-size: .78rem; color: var(--fg-mute); margin-top: 2px; font-variant-numeric: tabular-nums; }
.metric[data-tone="pv"] .value { color: var(--pv); }
.metric[data-tone="grid"] .value { color: var(--grid); }
.metric[data-tone="load"] .value { color: var(--load); }
.metric[data-tone="batt"] .value { color: var(--batt); }
.metric[data-tone="price"] .value { color: var(--price-buy); }

.soc-bar { margin-top: 10px; height: 6px; border-radius: 4px; background: #0d1620; overflow: hidden; }
.soc-bar span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--batt), var(--soc)); transition: width .4s ease; }

.charts { display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(420px, 1fr)); }
.chart-card:first-child, .chart-card:last-child { grid-column: 1 / -1; }
.chart { position: relative; height: 280px; }
.chart-sm { height: 200px; }

.legend { display: flex; flex-wrap: wrap; gap: 4px 14px; font-size: .76rem; color: var(--fg-dim); }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 11px; height: 3px; border-radius: 2px; display: inline-block; }

/* ---------- charts (SVG) ---------- */
.chart svg { display: block; width: 100%; height: 100%; overflow: visible; }
.chart .grid-line { stroke: var(--line); stroke-width: 1; }
.chart .zero-line { stroke: #33506d; stroke-width: 1; stroke-dasharray: 3 3; }
.chart .axis-text { fill: var(--fg-mute); font-size: 11px; }
.chart .series-line { fill: none; stroke-width: 1.8; stroke-linejoin: round; stroke-linecap: round; }
.chart .series-area { stroke: none; opacity: .18; }
.chart .hover-line { stroke: #4b6b8c; stroke-width: 1; }
.chart .hover-dot { stroke: var(--card); stroke-width: 2; }
.chart .empty { fill: var(--fg-mute); font-size: 13px; }

.tooltip {
  position: absolute;
  pointer-events: none;
  background: rgba(9, 15, 22, .96);
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 8px 10px;
  font-size: .78rem;
  line-height: 1.5;
  white-space: nowrap;
  box-shadow: var(--shadow);
  transform: translate(-50%, -108%);
  z-index: 5;
}
.tooltip .t-time { color: var(--fg-mute); margin-bottom: 3px; }
.tooltip .t-row { display: flex; justify-content: space-between; gap: 14px; font-variant-numeric: tabular-nums; }
.tooltip .t-row i { width: 9px; height: 3px; border-radius: 2px; display: inline-block; margin-right: 6px; }

/* ---------- admin ---------- */
.admin-login { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; }
.device-create { display: flex; gap: 10px; align-items: flex-end; flex-wrap: wrap; margin: 14px 0; }

.key-box {
  display: flex; gap: 12px; align-items: center; justify-content: space-between;
  background: rgba(242, 193, 78, .09);
  border: 1px solid rgba(242, 193, 78, .4);
  border-radius: 10px; padding: 10px 12px; margin-bottom: 12px;
}
.key-box code { display: block; margin-top: 6px; font-size: .84rem; word-break: break-all; color: var(--pv); }

.table-wrap { overflow-x: auto; }
table.devices { width: 100%; border-collapse: collapse; font-size: .88rem; }
table.devices th, table.devices td { text-align: left; padding: 9px 10px; border-bottom: 1px solid var(--line); white-space: nowrap; }
table.devices th { font-size: .7rem; text-transform: uppercase; letter-spacing: .07em; color: var(--fg-mute); font-weight: 600; }
table.devices td.right, table.devices th.right { text-align: right; }
table.devices .actions { display: inline-flex; gap: 6px; }
table.devices code { color: var(--fg); }

footer {
  display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap;
  padding: 14px 20px 24px; color: var(--fg-mute); font-size: .76rem;
  border-top: 1px solid var(--line);
}

.toast {
  position: fixed; left: 50%; bottom: 22px; transform: translateX(-50%);
  background: var(--card-2); border: 1px solid var(--line); border-radius: 10px;
  padding: 10px 16px; box-shadow: var(--shadow); z-index: 40; max-width: 90vw;
}
.toast.error { border-color: rgba(239, 111, 108, .6); color: #ffb4b1; }
.toast.ok { border-color: rgba(72, 199, 142, .6); color: #9ff0c9; }

@media (max-width: 900px) {
  .charts { grid-template-columns: 1fr; }
  .card-status { grid-column: 1 / -1; }
  .chart { height: 240px; }
  main { padding: 14px 12px 24px; }
  .topbar { padding: 10px 12px; }
}
@media (max-width: 520px) {
  .status { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
  .metric .value { font-size: 1.35rem; }
  .controls { width: 100%; }
  .field.grow, .controls .field { flex: 1 1 100%; }
}