:root {
  --bg: #0d1117;
  --bg-soft: #161b22;
  --bg-card: #1c2129;
  --border: #2d333b;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --green: #3fb950;
  --red: #f85149;
  --yellow: #d29922;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.muted { color: var(--muted); }
.small { font-size: 12px; }

/* ---- top bar ---- */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding: 14px 24px;
  background: var(--bg-soft);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { display: flex; align-items: center; gap: 12px; }
.logo {
  font-size: 26px;
  width: 44px; height: 44px;
  display: grid; place-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
}
h1 { margin: 0; font-size: 18px; font-weight: 650; }
.brand .sub { color: var(--muted); font-size: 12px; }
.top-right { display: flex; align-items: center; gap: 16px; font-size: 13px; }

/* ---- header nav ---- */
.topnav {
  display: flex;
  gap: 2px;
  flex: 1 1 auto;
  min-width: 0;
  justify-content: center;
  overflow-x: auto;
  scrollbar-width: none;
  font-size: 13px;
}
.topnav::-webkit-scrollbar { display: none; }
.topnav a {
  color: var(--muted);
  text-decoration: none;
  padding: 6px 11px;
  border-radius: 8px;
  white-space: nowrap;
}
.topnav a:hover { color: var(--text); background: var(--bg-card); }
.topnav a.on { color: var(--accent); background: var(--bg-card); font-weight: 600; }

/* anchored sections must clear the sticky topbar */
html { scroll-behavior: smooth; }
section[id] { scroll-margin-top: 96px; }
.status { display: inline-flex; align-items: center; gap: 7px; }
.dot {
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--yellow);
  transition: background .3s;
}
.dot.ok { background: var(--green); }
.dot.err { background: var(--red); }
.toggle { color: var(--muted); user-select: none; cursor: pointer; }
.toggle input { vertical-align: -2px; margin-right: 4px; }

/* ---- layout ---- */
main {
  max-width: 1180px;
  margin: 0 auto;
  padding: 20px 24px 40px;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

/* ---- KPI cards ---- */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 14px;
}
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}
.card-title {
  color: var(--muted);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .04em;
}
.card-value {
  font-size: 26px;
  font-weight: 650;
  margin-top: 6px;
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}
.card-sub { color: var(--muted); font-size: 12px; margin-top: 4px; }

/* ---- panels ---- */
.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
}
.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
}
.panel-title {
  font-size: 14px;
  font-weight: 650;
  margin-bottom: 12px;
}
.panel-head .panel-title { margin-bottom: 0; }

/* ---- segmented control ---- */
.seg {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.seg button {
  background: transparent;
  color: var(--muted);
  border: 0;
  padding: 5px 14px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
.seg button + button { border-left: 1px solid var(--border); }
.seg button.on { background: var(--accent); color: #0d1117; font-weight: 600; }

/* ---- chart ---- */
#chart {
  width: 100%;
  display: block;
  margin-top: 14px;
}
.chart-empty {
  color: var(--muted);
  text-align: center;
  padding: 30px 0;
}

/* ---- personal lookup ---- */
.lookup {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.lookup input {
  flex: 1 1 320px;
  min-width: 0;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 9px 12px;
  font: 14px ui-monospace, SFMono-Regular, Menlo, monospace;
}
.lookup input:focus {
  outline: none;
  border-color: var(--accent);
}
.lookup input::placeholder { color: var(--muted); font-family: inherit; }
.lookup .copy { padding: 9px 20px; }
#wallet-hint { margin-top: 8px; }
.warn-note {
  margin-top: 12px;
  padding: 10px 14px;
  background: rgba(210, 153, 34, .12);
  border: 1px solid rgba(210, 153, 34, .45);
  border-radius: 8px;
  color: #e3b341;
  font-size: 13px;
}
.err-text { color: var(--red); }
#mystats-extra .card { padding: 12px 14px; }
#mystats-extra .card-value { font-size: 20px; }
#miners-body tr { cursor: pointer; }

/* ---- engine grid ---- */
.engine-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 12px;
}
.engine-item {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
}
.engine-item .k { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .04em; }
.engine-item .v { font-size: 15px; font-weight: 600; margin-top: 3px; overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }
.v.ok { color: var(--green); }
.v.err { color: var(--red); }

/* ---- profitability calculator ---- */
.calc {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.calc-label { font-size: 13px; font-weight: 600; margin-bottom: 8px; }
.calc-row { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.calc-row input {
  width: 200px;
  box-sizing: border-box;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 7px 11px;
  font: 13px ui-monospace, SFMono-Regular, Menlo, monospace;
}
.calc-row input:focus { outline: none; border-color: var(--accent); }
.calc-out { font-size: 13px; color: var(--muted); font-variant-numeric: tabular-nums; }
.calc-out b { color: var(--text); font-weight: 600; }

/* ---- tables ---- */
.table-wrap { overflow-x: auto; }
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}
th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
th {
  color: var(--muted);
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: .04em;
}
tbody tr:hover { background: rgba(88, 166, 255, .05); }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
.addr { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }
.idle { color: var(--muted); }

/* ---- connect ---- */
.connect { display: flex; flex-direction: column; gap: 14px; }
.cmd-box {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px 14px;
}
.cmd-label { color: var(--muted); font-size: 12px; margin-bottom: 6px; }
.cmd-box pre {
  margin: 0 0 10px;
  white-space: pre-wrap;
  word-break: break-all;
  font: 13px/1.6 ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--green);
}
.copy {
  background: var(--bg-card);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 14px;
  font: inherit;
  font-size: 13px;
  cursor: pointer;
}
.copy:hover { border-color: var(--accent); color: var(--accent); }

/* ---- payments ---- */
.pay-balances {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 12px;
  margin-top: 4px;
}
.pay-item {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  overflow-wrap: anywhere;
}

footer {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px 30px;
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 640px) {
  main { padding: 14px 12px 30px; }
  .topbar { padding: 12px 14px; }
  .card-value { font-size: 21px; }
  .topnav { order: 3; flex-basis: 100%; justify-content: flex-start; }
}

/* ---- mining guide (OS instructions) ---- */
.guide { display: flex; flex-direction: column; gap: 14px; }
.guide-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.guide-head .cmd-label { margin-bottom: 0; color: var(--text); font-size: 13px; font-weight: 600; }
.guide-fields { display: flex; align-items: flex-end; gap: 14px; flex-wrap: wrap; }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 180px; }
.field:first-child { flex: 3 1 380px; }
.field:last-child { flex: 1 1 160px; }
.field input {
  width: 100%;
  box-sizing: border-box;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 7px 11px;
  font: 13px ui-monospace, SFMono-Regular, Menlo, monospace;
}
.field input:focus { outline: none; border-color: var(--accent); }
.os-block[hidden] { display: none; }
.steps { margin: 0; padding-left: 22px; }
.steps li { margin: 10px 0; }
.steps .cmd-box { margin-top: 8px; }
.code {
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  margin: 8px 0 0;
  overflow-x: auto;
  white-space: pre;
  font: 13px/1.6 ui-monospace, SFMono-Regular, Menlo, monospace;
  color: var(--green);
}
.notes { padding-top: 2px; }
.notes .cmd-label { color: var(--text); font-size: 13px; font-weight: 600; }
.notes-list { margin: 8px 0 0; padding-left: 22px; }
.notes-list li { margin: 7px 0; }
.steps a, .notes a { overflow-wrap: break-word; }