:root {
  --bg: #0b0e14;
  --panel: #11161f;
  --panel-2: #141a25;
  --border: #1f2734;
  --border-hi: #2b3546;
  --text: #e6edf3;
  --dim: #8b949e;
  --faint: #566072;
  --cpu: #4cc2ff;
  --mem: #b48cff;
  --in: #2dd4a7;
  --out: #ffb454;
  --disk: #f472b6;
  --ok: #3fb950;
  --warn: #d29922;
  --bad: #f85149;
  --mono: ui-monospace, "Cascadia Code", "SF Mono", Consolas, "Liberation Mono", monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  font-size: 14px;
}

body {
  min-height: 100vh;
  background:
    radial-gradient(1000px 500px at 85% -10%, rgba(76, 194, 255, 0.07), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(180, 140, 255, 0.06), transparent 60%),
    var(--bg);
}

.mono { font-family: var(--mono); }

/* ---------------------------------------------------------------- topbar */

.topbar {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  background: rgba(17, 22, 31, 0.75);
  backdrop-filter: blur(6px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.brand { display: flex; align-items: center; gap: 10px; }
.brand h1 {
  margin: 0;
  font-size: 14px;
  letter-spacing: 0.18em;
  font-weight: 700;
  color: var(--text);
}

.pulse {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 0 rgba(63, 185, 80, 0.6);
  animation: pulse 1.6s infinite;
}
.pulse.down { background: var(--bad); animation: none; box-shadow: none; }
.pulse.wait { background: var(--warn); animation: none; box-shadow: none; }

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(63, 185, 80, 0.55); }
  70% { box-shadow: 0 0 0 8px rgba(63, 185, 80, 0); }
  100% { box-shadow: 0 0 0 0 rgba(63, 185, 80, 0); }
}

.sysline {
  flex: 1;
  color: var(--dim);
  font-size: 12.5px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.topmeta { display: flex; gap: 8px; align-items: center; }

.chip {
  font-size: 11.5px;
  color: var(--dim);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 11px;
  white-space: nowrap;
}

.chip.conn { color: var(--faint); letter-spacing: 0.08em; font-weight: 600; }
.chip.conn.live { color: var(--ok); border-color: rgba(63, 185, 80, 0.4); }
.chip.conn.reconnect { color: var(--warn); border-color: rgba(210, 153, 34, 0.4); }

/* refresh-interval selector */
.ivsel {
  display: flex;
  gap: 2px;
  padding: 2px;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 999px;
}
.ivsel .iv {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--faint);
  font: 600 11px/1 system-ui, sans-serif;
  letter-spacing: 0.07em;
  padding: 5px 10px;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.15s, background 0.15s;
}
.ivsel .iv:hover { color: var(--text); }
.ivsel .iv.on {
  background: rgba(76, 194, 255, 0.16);
  color: var(--cpu);
}
.ivsel .iv:focus-visible { outline: 1px solid var(--cpu); outline-offset: 1px; }

/* ---------------------------------------------------------------- grid */

.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 14px;
  padding: 16px 20px 28px;
  max-width: 1600px;
  margin: 0 auto;
}

.span3 { grid-column: span 3; }
.span4 { grid-column: span 4; }
.span8 { grid-column: span 8; }
.span12 { grid-column: span 12; }

.card {
  background: linear-gradient(180deg, var(--panel) 0%, var(--panel-2) 100%);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 14px 16px 16px;
  min-width: 0;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.06), transparent);
}

.card-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}
.card-head h2 {
  margin: 0;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  font-weight: 700;
  color: var(--dim);
}
.card-head .hint { color: var(--faint); font-weight: 500; letter-spacing: 0.04em; }

.legend { display: flex; gap: 14px; font-size: 11.5px; color: var(--dim); }
.legend .lg b { font-family: var(--mono); font-weight: 600; color: var(--text); margin-left: 4px; }
.lg-cpu b { color: var(--cpu); }
.lg-mem b { color: var(--mem); }
.lg-in b { color: var(--in); }
.lg-out b { color: var(--out); }

/* ---------------------------------------------------------------- KPI cards */

.kpi { display: flex; flex-direction: column; gap: 8px; }
.kpi[data-accent="cpu"] { --accent: var(--cpu); }
.kpi[data-accent="mem"] { --accent: var(--mem); }
.kpi[data-accent="net"] { --accent: var(--in); }
.kpi[data-accent="disk"] { --accent: var(--disk); }

.kpi-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; flex-wrap: wrap; }
.kpi-title {
  font-size: 11.5px;
  letter-spacing: 0.16em;
  font-weight: 700;
  color: var(--accent);
}
.kpi-sub { font-size: 11px; color: var(--faint); font-family: var(--mono); }

.kpi-value {
  font-family: var(--mono);
  font-size: 40px;
  font-weight: 600;
  line-height: 1;
  color: var(--text);
  letter-spacing: -0.02em;
}
.kpi-value small { font-size: 16px; color: var(--faint); margin-left: 4px; font-weight: 500; }

.kpi-rows { display: flex; flex-direction: column; gap: 3px; min-height: 51px; justify-content: center; }
.kpi-row { display: flex; align-items: baseline; gap: 8px; font-size: 15px; }
.kpi-row .mono { font-weight: 600; min-width: 84px; }
.kpi-row em { font-style: normal; font-size: 10.5px; color: var(--faint); letter-spacing: 0.1em; }
.kpi-row .arrow { font-size: 9px; }
.kpi-row .arrow.down { color: var(--in); }
.kpi-row .arrow.up { color: var(--out); }

.spark { width: 100%; height: 52px; display: block; }

/* ---------------------------------------------------------------- charts */

.chart { width: 100%; height: 230px; display: block; }

/* ---------------------------------------------------------------- per-core */

.cores { display: flex; flex-direction: column; gap: 9px; }
.core-row { display: grid; grid-template-columns: 62px 1fr 52px; align-items: center; gap: 10px; }
.core-name { font-size: 11.5px; color: var(--dim); font-family: var(--mono); }
.core-pct { font-size: 12px; font-family: var(--mono); text-align: right; color: var(--text); }

.bar {
  height: 10px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 6px;
  overflow: hidden;
  position: relative;
}
.bar > i {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: 6px;
  background: var(--bar-color, var(--cpu));
  transition: width 0.9s cubic-bezier(0.22, 1, 0.36, 1);
}
.bar > i.hot { background: linear-gradient(90deg, #f0a24b, var(--bad)); }

/* ---------------------------------------------------------------- storage */

.disks { display: flex; flex-direction: column; gap: 13px; }
.disk-row { display: flex; flex-direction: column; gap: 6px; }
.disk-line { display: flex; justify-content: space-between; align-items: baseline; font-size: 12px; }
.disk-name { font-family: var(--mono); color: var(--text); font-weight: 600; }
.disk-size { color: var(--faint); font-family: var(--mono); font-size: 11.5px; }
.disk-pct { font-family: var(--mono); color: var(--text); }
.disk-row .bar { height: 8px; }
.disk-row .bar > i { background: linear-gradient(90deg, #ff8fc0, var(--disk)); transition: width 0.9s cubic-bezier(0.22, 1, 0.36, 1); }

/* ---------------------------------------------------------------- processes */

.tablewrap { overflow-x: auto; }

table.procs { width: 100%; border-collapse: collapse; }
table.procs th {
  text-align: left;
  font-size: 10.5px;
  letter-spacing: 0.12em;
  color: var(--faint);
  font-weight: 700;
  padding: 4px 10px 8px;
  border-bottom: 1px solid var(--border);
}
table.procs td {
  padding: 6px 10px;
  font-size: 13px;
  border-bottom: 1px solid rgba(31, 39, 52, 0.6);
}
table.procs tbody tr:last-child td { border-bottom: none; }
table.procs tbody tr:hover td { background: rgba(76, 194, 255, 0.05); }

.col-name { width: 45%; }
.col-pid { width: 12%; }
.col-cpu { width: 18%; }
.col-mem { width: 25%; }

td.p-name { font-weight: 600; color: var(--text); }
td.p-name .exe { color: var(--faint); font-weight: 400; }
td.p-pid, td.p-cpu, td.p-mem { font-family: var(--mono); }
td.p-pid { color: var(--faint); }
td.p-mem { color: var(--dim); }
td.p-cpu { font-weight: 600; }
td.p-cpu.lv1 { color: var(--in); }
td.p-cpu.lv2 { color: var(--warn); }
td.p-cpu.lv3 { color: var(--bad); }
td.p-cpu.na { color: var(--faint); font-weight: 400; }

.empty { color: var(--faint); font-size: 12.5px; text-align: center; padding: 18px 0; }

/* ---------------------------------------------------------------- footer */

.foot {
  display: flex;
  gap: 10px;
  align-items: center;
  font-size: 11.5px;
  color: var(--faint);
  padding: 4px 6px 0;
  flex-wrap: wrap;
}
.foot .dot { opacity: 0.5; }
.foot code { font-family: var(--mono); color: var(--dim); background: rgba(255,255,255,0.04); padding: 1px 5px; border-radius: 4px; }
.foot .right { margin-left: auto; font-family: var(--mono); }
.foot .right.ok { color: var(--ok); }
.foot .right.down { color: var(--bad); }

/* ---------------------------------------------------------------- responsive */

@media (max-width: 1100px) {
  .span3, .span4, .span8 { grid-column: span 12; }
  .kpi-value { font-size: 34px; }
}
@media (max-width: 720px) {
  .grid { padding: 12px; gap: 10px; }
  .topbar { flex-wrap: wrap; gap: 8px; padding: 10px 12px; }
  .sysline { order: 3; flex-basis: 100%; }
}