/* Redis Monitor — strictly monochrome. No hues anywhere: state is carried by
   fill, weight and border, never by colour. */

:root {
  --bg:        #ffffff;
  --surface:   #ffffff;
  --sunken:    #f4f4f4;
  --ink:       #000000;
  --ink-2:     #444444;
  --ink-3:     #767676;
  --line:      #e0e0e0;
  --line-2:    #c4c4c4;
  --invert-bg: #000000;
  --invert-fg: #ffffff;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root[data-theme="auto"] {
    --bg: #000000; --surface: #0b0b0b; --sunken: #141414;
    --ink: #ffffff; --ink-2: #bdbdbd; --ink-3: #8a8a8a;
    --line: #262626; --line-2: #3d3d3d;
    --invert-bg: #ffffff; --invert-fg: #000000;
  }
}
:root[data-theme="dark"] {
  --bg: #000000; --surface: #0b0b0b; --sunken: #141414;
  --ink: #ffffff; --ink-2: #bdbdbd; --ink-3: #8a8a8a;
  --line: #262626; --line-2: #3d3d3d;
  --invert-bg: #ffffff; --invert-fg: #000000;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ---------- login ---------- */

.login-body { display: grid; place-items: center; min-height: 100vh; padding: 24px; }

.login-card {
  width: 100%; max-width: 360px;
  border: 1px solid var(--line-2);
  background: var(--surface);
  padding: 40px 32px;
}
.login-mark { font-size: 32px; line-height: 1; letter-spacing: -2px; }
.login-card h1 { font-size: 20px; margin: 16px 0 2px; letter-spacing: -0.02em; }
.login-sub { margin: 0 0 28px; color: var(--ink-3); font-family: var(--mono); font-size: 12px; }
.login-foot { margin: 20px 0 0; color: var(--ink-3); font-size: 11px; text-align: center; }

label { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-2); margin: 16px 0 6px; }

input[type=text], input[type=password] {
  width: 100%; padding: 10px 12px;
  border: 1px solid var(--line-2); background: var(--bg); color: var(--ink);
  font-family: var(--mono); font-size: 13px;
}
input:focus, button:focus, select:focus { outline: 2px solid var(--ink); outline-offset: 1px; }
input:disabled { opacity: 0.5; }

button {
  margin-top: 24px; width: 100%; padding: 11px;
  background: var(--invert-bg); color: var(--invert-fg);
  border: 1px solid var(--invert-bg);
  font-weight: 600; font-size: 13px; cursor: pointer;
}
button:hover:not(:disabled) { opacity: 0.85; }
button:disabled { opacity: 0.4; cursor: not-allowed; }

.alert {
  margin-top: 20px; padding: 10px 12px;
  border: 1px solid var(--ink); background: var(--sunken);
  font-size: 12px; font-family: var(--mono);
}

/* ---------- app shell ---------- */

.top {
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
  padding: 14px 20px; border-bottom: 1px solid var(--line); background: var(--surface);
  position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 700; letter-spacing: -0.02em; font-size: 15px; }
.brand small { display: block; font-weight: 400; font-size: 11px; color: var(--ink-3); font-family: var(--mono); }
.spacer { flex: 1; }

.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; background: var(--ink); }
.dot.off { background: transparent; border: 1px solid var(--ink-3); }
.dot.live { animation: pulse 2s ease-in-out infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.25; } }
@media (prefers-reduced-motion: reduce) { .dot.live { animation: none; } }

.pill {
  display: inline-flex; align-items: center; gap: 6px;
  border: 1px solid var(--line-2); padding: 5px 10px;
  font-family: var(--mono); font-size: 11px; color: var(--ink-2);
}

.btn {
  width: auto; margin: 0; padding: 7px 12px;
  background: var(--surface); color: var(--ink); border: 1px solid var(--line-2);
  font-size: 12px; font-weight: 500;
}
.btn:hover:not(:disabled) { background: var(--sunken); opacity: 1; }
.btn.primary { background: var(--invert-bg); color: var(--invert-fg); border-color: var(--invert-bg); }

main { padding: 20px; max-width: 1500px; margin: 0 auto; }

section { margin-bottom: 28px; }
h2 {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em;
  color: var(--ink-3); margin: 0 0 10px; font-weight: 600;
}

/* ---------- tiles ---------- */

.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1px; background: var(--line); border: 1px solid var(--line); }
.tile { background: var(--surface); padding: 14px 16px; }
.tile .k { font-size: 10px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-3); }
.tile .v { font-size: 24px; font-weight: 700; font-family: var(--mono); letter-spacing: -0.03em; margin-top: 4px; }
.tile .s { font-size: 11px; color: var(--ink-3); font-family: var(--mono); }
.tile.alarm { background: var(--invert-bg); }
.tile.alarm .k, .tile.alarm .v, .tile.alarm .s { color: var(--invert-fg); }

/* ---------- tables ---------- */

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 9px 12px; border-bottom: 1px solid var(--line); }
th { font-size: 10px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink-3); font-weight: 600; }
td.num { text-align: right; font-family: var(--mono); }
tbody tr:hover { background: var(--sunken); }
.table-wrap { border: 1px solid var(--line); overflow-x: auto; background: var(--surface); }

/* ---------- workers ---------- */

.workers { display: flex; flex-wrap: wrap; gap: 6px; }
.worker {
  border: 1px solid var(--line-2); padding: 6px 9px;
  font-family: var(--mono); font-size: 11px; display: flex; gap: 7px; align-items: center;
}
.worker.down { background: var(--invert-bg); color: var(--invert-fg); border-color: var(--invert-bg); }

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

.charts { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 16px; }
.chart { border: 1px solid var(--line); background: var(--surface); padding: 14px; }
.chart-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 8px; }
.chart-title { font-size: 12px; font-weight: 600; }
.chart-now { font-family: var(--mono); font-size: 12px; color: var(--ink-2); }
canvas { width: 100%; height: 120px; display: block; }

.ranges { display: flex; gap: 0; border: 1px solid var(--line-2); }
.ranges .btn { border: 0; border-right: 1px solid var(--line-2); }
.ranges .btn:last-child { border-right: 0; }
.ranges .btn.on { background: var(--invert-bg); color: var(--invert-fg); }

/* ---------- logs ---------- */

.log-controls { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; align-items: center; }
select, .search {
  padding: 7px 10px; border: 1px solid var(--line-2);
  background: var(--surface); color: var(--ink); font-size: 12px; font-family: var(--mono);
}
.search { width: 220px; }

.log-list { border: 1px solid var(--line); background: var(--surface); max-height: 460px; overflow-y: auto; }
.log-row { padding: 9px 12px; border-bottom: 1px solid var(--line); font-family: var(--mono); font-size: 12px; }
.log-row:last-child { border-bottom: 0; }
.log-meta { display: flex; gap: 10px; align-items: center; margin-bottom: 3px; }
.log-time { color: var(--ink-3); font-size: 11px; }
.log-level { font-size: 10px; font-weight: 700; letter-spacing: 0.06em; border: 1px solid var(--ink-3); padding: 0 5px; }
.log-level.sev { background: var(--invert-bg); color: var(--invert-fg); border-color: var(--invert-bg); }
.log-msg { word-break: break-word; }
.log-trace { margin-top: 6px; padding: 8px; background: var(--sunken); color: var(--ink-2); font-size: 11px; white-space: pre-wrap; max-height: 140px; overflow-y: auto; }

/* Utility classes exist so app.js never needs an inline style attribute —
   the CSP forbids style-src 'unsafe-inline'. */
.row-between { display: flex; justify-content: space-between; align-items: center; margin-bottom: 10px; }
.m0 { margin: 0; }
.th-num { text-align: right; }
.muted { opacity: 0.6; }
.foot { color: var(--ink-3); font-size: 11px; font-family: var(--mono); padding-top: 8px; }

.empty { padding: 32px; text-align: center; color: var(--ink-3); font-size: 12px; }
.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--invert-bg); color: var(--invert-fg);
  padding: 11px 18px; font-size: 12px; font-family: var(--mono); z-index: 50;
  max-width: 90vw;
}