:root {
  --bg: #0d1117;
  --panel: #161b22;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #2f81f7;
  --border: #30363d;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fa;
    --panel: #ffffff;
    --text: #1f2328;
    --muted: #59636e;
    --accent: #0969da;
    --border: #d0d7de;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}
header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 16px;
  border-bottom: 1px solid var(--border);
}
h1 { margin: 0; font-size: 1.25rem; }
h2 { margin: 0 0 8px; font-size: 1.05rem; }
a { color: var(--accent); }
main { max-width: 1240px; margin: 0 auto; padding: 16px; }
section {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  margin-bottom: 16px;
}
.muted { color: var(--muted); }

/* ---- navigation ---- */
nav {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  padding: 8px 16px 0;
  max-width: 1240px;
  margin: 0 auto;
}
nav a {
  padding: 8px 14px;
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--muted);
  text-decoration: none;
  background: var(--panel);
}
nav a.active {
  color: var(--text);
  border-color: var(--accent);
}

/* ---- overview cards ---- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 12px;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px;
}
.card h3 { margin: 0 0 2px; font-size: 1.1rem; display: flex; gap: 8px; align-items: baseline; }
.card .sub { color: var(--muted); font-size: 0.9rem; margin-bottom: 10px; }
.card dl { margin: 0; display: grid; grid-template-columns: auto 1fr; gap: 2px 12px; font-size: 0.95rem; }
.card dt { color: var(--muted); }
.card dd { margin: 0; text-align: right; white-space: nowrap; }
.badge {
  font-size: 0.72rem;
  padding: 1px 7px;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  font-weight: normal;
}
.card.unused { opacity: 0.75; }
.controls { margin: 0 0 12px; color: var(--muted); font-size: 0.92rem; }
.controls label { cursor: pointer; }

/* ---- charts ---- */
.legend { margin: 0 0 6px; display: flex; gap: 8px; flex-wrap: wrap; }
.chip { font-size: 0.85rem; padding: 1px 9px; border: 1px solid; border-radius: 999px; }
svg.chart { display: block; width: 100%; height: auto; max-width: 900px; }
svg.chart .grid { stroke: var(--border); stroke-width: 1; }
svg.chart .tick { fill: var(--muted); font-size: 11px; }
select { font: inherit; color: var(--text); background: var(--panel); border: 1px solid var(--border);
         border-radius: 6px; padding: 4px 8px; }

/* ---- tables, buttons, warnings ---- */
table { border-collapse: collapse; width: 100%; max-width: 900px; margin-top: 10px; }
th, td { text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: normal; font-size: 0.9rem; }
td.num { text-align: right; white-space: nowrap; }
.btn {
  margin-top: 14px; font: inherit; color: var(--text); background: var(--panel);
  border: 1px solid var(--accent); border-radius: 8px; padding: 8px 14px; cursor: pointer;
}
section.warn { border-color: #d29922; }

/* ---- layout additions of the website ---- */
header { align-items: center; }
header h1 { font-size: 1.4rem; }
.charts { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 520px), 1fr)); gap: 16px; }
.charts > section { margin-bottom: 0; }
.charts > .controls { grid-column: 1 / -1; margin: 0; }
nav a { min-height: 40px; display: inline-flex; align-items: center; }
@media (max-width: 600px) {
  main { padding: 10px; }
  section { padding: 12px; }
  .card dd { white-space: normal; }
}

/* tables must fit the screen without a scrollbar: tighter cells, wrapping text on a phone */
@media (max-width: 600px) {
  th, td { padding: 6px 4px; font-size: 0.9rem; }
  td, td.num { white-space: normal; overflow-wrap: anywhere; }
}

/* ---- login page and logout button ---- */
header form.logout { margin: 0; }
button.link { font: inherit; background: none; border: 0; color: var(--accent); cursor: pointer; padding: 4px 0; text-decoration: underline; }
.login { max-width: 380px; margin: 12vh auto 0; padding: 0 16px; }
.login input[type=password] { width: 100%; font: inherit; padding: 10px; margin: 8px 0 12px; color: var(--text);
  background: var(--panel); border: 1px solid var(--border); border-radius: 8px; }
.login .btn { margin-top: 0; width: 100%; }
.login .err { color: #d1242f; }

.err { color: #d1242f; }
.ok { color: #1a7f37; }
input[type=file] { font: inherit; max-width: 100%; margin: 6px 0; }
.btn:disabled { opacity: 0.45; cursor: default; }

/* ---- Jeti models ---- */
h2.sect { margin: 22px 0 10px; font-size: 1.05rem; }
.mcards { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 420px), 1fr)); gap: 16px; margin-bottom: 16px; }
.mcard { margin: 0; }
.mcard h3 { margin: 0 0 6px; font-size: 1.1rem; }
.mcard .badges { margin: 0 0 8px; display: flex; gap: 6px; flex-wrap: wrap; }
.mcard p { margin: 4px 0; }
.small { font-size: 0.88rem; }
.hint { color: var(--accent); }
.fields { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px 12px; margin: 10px 0; }
.fields label { display: flex; flex-direction: column; gap: 4px; font-size: 0.85rem; color: var(--muted); }
.fields label.check { flex-direction: row; align-items: center; gap: 6px; grid-column: 1 / -1; color: var(--text); font-size: 0.95rem; }
.fields input[type=number], .fields select { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 8px; width: 100%; }
.actions { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.actions .btn { margin-top: 0; }
.btn.ghost { border-color: var(--border); color: var(--muted); }

.btn.danger { border-color: #d1242f; color: #d1242f; }
.btn.danger:hover:not(:disabled) { background: color-mix(in srgb, #d1242f 12%, transparent); }
.actions.confirm { margin-top: 8px; }
[hidden] { display: none !important; }

.mcard h3 { display: flex; gap: 10px; align-items: baseline; flex-wrap: wrap; }
.mcard h3 button.link { font-size: 0.8rem; font-weight: normal; }
.actions.rename input[type=text] { font: inherit; color: var(--text); background: var(--bg); border: 1px solid var(--border);
  border-radius: 6px; padding: 6px 8px; flex: 1 1 200px; min-width: 0; }

/* ---- battery page (NFC address) ---- */
.battery { max-width: 760px; margin: 0 auto; }
.battery .backlink { margin: 4px 0 12px; }
.bighead .bigid { font-size: clamp(2rem, 9vw, 2.8rem); font-weight: 700; letter-spacing: -0.01em; line-height: 1.1; }
dl.kv { margin: 0; display: grid; grid-template-columns: minmax(110px, auto) 1fr; gap: 6px 14px; }
dl.kv dt { color: var(--muted); }
dl.kv dd { margin: 0; text-align: right; overflow-wrap: anywhere; }
@media (max-width: 480px) { dl.kv { grid-template-columns: 1fr; gap: 0; } dl.kv dt { margin-top: 8px; } dl.kv dd { text-align: left; } }

.actions.rename .counter { flex: 1 0 100%; margin: 2px 0 0; }