:root {
    color-scheme: light;

    --bg:          #F4F6F8;
    --surface:     #FFFFFF;
    --surface-2:   #EDF1F4;
    --surface-3:   #E3E9ED;
    --border:      #D3DBE2;
    --border-soft: #E4EAEF;

    --text:        #131A21;
    --text-2:      #46545F;
    --text-3:      #64727C;

    --accent:      #0F6E82;
    --accent-hov:  #0B5A6B;
    --accent-on:   #FFFFFF;
    --accent-soft: #DDEEF2;

    --ok:          #15784F;
    --ok-soft:     #DCEFE4;
    --warn:        #97620C;
    --warn-soft:   #F7E9D2;
    --err:         #AE2E22;
    --err-soft:    #F7E0DD;

    --shadow: 0 1px 2px rgba(16, 32, 43, .06), 0 6px 18px -10px rgba(16, 32, 43, .22);

    --mono: ui-monospace, "SF Mono", SFMono-Regular, Menlo, "Cascadia Mono", "Roboto Mono", monospace;
    --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

    --r: 7px;
  }

  @media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
      color-scheme: dark;

      --bg:          #0D1318;
      --surface:     #141C23;
      --surface-2:   #1B252D;
      --surface-3:   #223039;
      --border:      #2A3943;
      --border-soft: #1F2C34;

      --text:        #E8EEF2;
      --text-2:      #A8B8C3;
      --text-3:      #7C8D99;

      --accent:      #3FB0C6;
      --accent-hov:  #59C3D7;
      --accent-on:   #08181D;
      --accent-soft: #16323B;

      --ok:          #4FC08D;
      --ok-soft:     #14312A;
      --warn:        #E0A64A;
      --warn-soft:   #33280F;
      --err:         #EE7A6C;
      --err-soft:    #381D1A;

      --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 22px -12px rgba(0, 0, 0, .7);
    }
  }

  :root[data-theme="dark"] {
    color-scheme: dark;

    --bg:          #0D1318;
    --surface:     #141C23;
    --surface-2:   #1B252D;
    --surface-3:   #223039;
    --border:      #2A3943;
    --border-soft: #1F2C34;

    --text:        #E8EEF2;
    --text-2:      #A8B8C3;
    --text-3:      #7C8D99;

    --accent:      #3FB0C6;
    --accent-hov:  #59C3D7;
    --accent-on:   #08181D;
    --accent-soft: #16323B;

    --ok:          #4FC08D;
    --ok-soft:     #14312A;
    --warn:        #E0A64A;
    --warn-soft:   #33280F;
    --err:         #EE7A6C;
    --err-soft:    #381D1A;

    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 8px 22px -12px rgba(0, 0, 0, .7);
  }

  * { box-sizing: border-box; }

  body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font: 15px/1.55 var(--sans);
    -webkit-font-smoothing: antialiased;
  }

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

  :focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
    border-radius: 3px;
  }

  /* ---------- prototype ribbon ---------- */

  .proto {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px 16px;
    padding: 9px 18px;
    background: var(--surface-3);
    border-bottom: 1px solid var(--border);
    font-size: 12.5px;
    color: var(--text-2);
  }

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

  .shell { display: grid; grid-template-columns: 216px 1fr; min-height: calc(100vh - 39px); }
  .shell[hidden] { display: none; }

  .rail {
    background: var(--surface);
    border-right: 1px solid var(--border);
    padding: 20px 12px;
    display: flex;
    flex-direction: column;
    gap: 26px;
  }

  .mark { display: flex; align-items: center; gap: 9px; padding: 0 8px; }
  .mark .glyph {
    width: 26px; height: 26px; flex: none;
    border-radius: 6px;
    background: var(--accent);
    color: var(--accent-on);
    display: grid; place-items: center;
    font-family: var(--mono); font-size: 14px; font-weight: 700;
  }
  .mark .name { font-weight: 640; letter-spacing: -.01em; }

  .nav { display: flex; flex-direction: column; gap: 2px; }
  .nav a {
    display: flex; align-items: center; justify-content: space-between; gap: 8px;
    padding: 7px 10px;
    border-radius: var(--r);
    color: var(--text-2);
    text-decoration: none;
    font-size: 14px;
  }
  .nav a:hover { background: var(--surface-2); color: var(--text); }
  .nav a[aria-current="page"] { background: var(--accent-soft); color: var(--accent); font-weight: 560; }
  .nav .count {
    font: 11px/1 var(--mono);
    padding: 3px 5px; border-radius: 4px;
    background: var(--surface-2); color: var(--text-3);
  }
  .nav a[aria-current="page"] .count { background: var(--surface); color: var(--accent); }

  .rail-foot { margin-top: auto; padding: 0 10px; font-size: 12px; color: var(--text-3); }
  .rail-foot .who { color: var(--text-2); }

  main { padding: 30px 34px 64px; min-width: 0; }
  .screen { display: none; max-width: 1000px; }
  .screen.is-active { display: block; }

  /* ---------- type ---------- */

  h1 { font-size: 23px; letter-spacing: -.02em; margin: 0; text-wrap: balance; }
  h2 { font-size: 15px; letter-spacing: -.005em; margin: 0; }
  .eyebrow {
    font: 500 11px/1 var(--sans);
    letter-spacing: .1em; text-transform: uppercase;
    color: var(--text-3);
  }
  .lede { color: var(--text-2); margin: 6px 0 0; max-width: 62ch; }
  .page-head { display: flex; align-items: flex-start; gap: 20px; margin-bottom: 26px; }
  .page-head .spacer { flex: 1 1 auto; }

  /* ---------- pills ---------- */

  .pill {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 2px 8px 2px 6px;
    border-radius: 20px;
    font-size: 12px; font-weight: 540;
    white-space: nowrap;
  }
  .pill::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; flex: none; }
  .pill.ok   { background: var(--ok-soft);   color: var(--ok); }
  .pill.warn { background: var(--warn-soft); color: var(--warn); }
  .pill.err  { background: var(--err-soft);  color: var(--err); }
  .pill.idle { background: var(--surface-2); color: var(--text-3); }
  .pill.busy { background: var(--accent-soft); color: var(--accent); }
  .pill.busy::before { animation: blink 1.1s steps(2, start) infinite; }
  @keyframes blink { 50% { opacity: .25; } }
  @media (prefers-reduced-motion: reduce) { .pill.busy::before { animation: none; } }

  /* ---------- cards + tables ---------- */

  .card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: var(--shadow);
  }
  .card + .card { margin-top: 20px; }
  .card-head {
    display: flex; align-items: center; gap: 12px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border-soft);
  }
  .card-head .spacer { flex: 1 1 auto; }
  .card-body { padding: 18px; }

  .scroll-x { overflow-x: auto; }

  table { width: 100%; border-collapse: collapse; font-size: 14px; }
  th {
    text-align: left; font-weight: 550; font-size: 11px;
    letter-spacing: .07em; text-transform: uppercase; color: var(--text-3);
    padding: 10px 18px; border-bottom: 1px solid var(--border-soft);
    white-space: nowrap;
  }
  td { padding: 13px 18px; border-bottom: 1px solid var(--border-soft); vertical-align: top; }
  tr:last-child td { border-bottom: 0; }
  tbody tr:hover td { background: var(--surface-2); }
  /* Right-aligned so the digits line up; tabular figures do nothing for
   comparison if the columns are ragged. */
.num { font-family: var(--mono); font-variant-numeric: tabular-nums; text-align: right; }
th.num { text-align: right; }

  .host { font-family: var(--mono); font-size: 13px; }
  .host a { color: var(--text); text-decoration: none; border-bottom: 1px solid var(--border); }
  .host a:hover { color: var(--accent); border-bottom-color: var(--accent); }
  .host-row { display: flex; align-items: center; gap: 8px; margin-bottom: 5px; }
  .host-row:last-child { margin-bottom: 0; }
  .role { font: 10px/1 var(--sans); letter-spacing: .06em; text-transform: uppercase; color: var(--text-3); }

  .cname { font-weight: 600; letter-spacing: -.01em; }
  .sub { color: var(--text-3); font-size: 12.5px; margin-top: 2px; }

  /* ---------- buttons + forms ---------- */

  .btn {
    font: 500 13.5px/1 var(--sans);
    padding: 8px 13px;
    border-radius: var(--r);
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    cursor: pointer;
    white-space: nowrap;
  }
  .btn:hover { background: var(--surface-2); border-color: var(--text-3); }
  .btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-on); }
  .btn.primary:hover { background: var(--accent-hov); border-color: var(--accent-hov); }
  .btn.quiet { border-color: transparent; background: transparent; color: var(--text-2); padding-inline: 8px; }
  .btn.quiet:hover { background: var(--surface-2); color: var(--text); }
  .btn.danger:hover { color: var(--err); border-color: var(--err); background: var(--err-soft); }
  .btn[disabled] { opacity: .45; cursor: not-allowed; }
  .btn-row { display: flex; flex-wrap: wrap; gap: 8px; }

  .field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }
  .field label { font-size: 13px; font-weight: 550; }
  .field .hint { font-size: 12.5px; color: var(--text-3); }
  input[type="text"], input[type="email"], input[type="password"], input[type="number"], textarea, select {
    font: 14px/1.5 var(--sans);
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: var(--r);
    background: var(--surface);
    color: var(--text);
    width: 100%;
  }
  textarea, input.mono { font-family: var(--mono); font-size: 13px; }
  input:focus, textarea:focus, select:focus { border-color: var(--accent); outline: none; box-shadow: 0 0 0 3px var(--accent-soft); }
  .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }

  /* ---------- record block ---------- */

  .record {
    font-family: var(--mono); font-size: 13px;
    background: var(--surface-2);
    border: 1px solid var(--border-soft);
    border-radius: var(--r);
    padding: 12px 14px;
    display: flex; align-items: center; gap: 14px;
    overflow-x: auto;
    white-space: nowrap;
  }
  .record .spacer { flex: 1 1 auto; }
  .record .k { color: var(--text-3); }

  /* ---------- state rail ---------- */

  .steps { display: flex; flex-direction: column; gap: 0; }
  .step { display: flex; gap: 14px; }
  .step .dot-col { display: flex; flex-direction: column; align-items: center; flex: none; }
  .step .dot {
    width: 18px; height: 18px; border-radius: 50%; margin-top: 2px;
    border: 2px solid var(--border); background: var(--surface);
    display: grid; place-items: center;
    font: 700 10px/1 var(--sans); color: var(--surface);
  }
  .step .line { width: 2px; flex: 1 1 auto; background: var(--border); min-height: 18px; }
  .step:last-child .line { display: none; }
  .step .body { padding-bottom: 18px; }
  .step:last-child .body { padding-bottom: 0; }
  .step .title { font-weight: 560; font-size: 14px; }
  .step .note { font-size: 13px; color: var(--text-3); margin-top: 2px; max-width: 58ch; }

  .step.done .dot { background: var(--ok); border-color: var(--ok); color: var(--surface); }
  .step.done .dot::after { content: "✓"; }
  .step.done .line { background: var(--ok); }
  .step.now .dot { border-color: var(--accent); background: var(--accent-soft); }
  .step.now .title { color: var(--accent); }

  /* ---------- log table ---------- */

  .logs td { padding: 8px 18px; font-family: var(--mono); font-size: 12.5px; }
  .logs .s2 { color: var(--ok); }
  .logs .s4 { color: var(--warn); }
  .logs .s5 { color: var(--err); font-weight: 600; }
  .filters { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px; }
  .filters .field { margin: 0; min-width: 180px; }

  .empty { padding: 34px 18px; text-align: center; color: var(--text-3); font-size: 13.5px; }

  /* ---------- stat strip ---------- */

  .stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 1px; background: var(--border-soft); border-radius: 10px; overflow: hidden; border: 1px solid var(--border); margin-bottom: 20px; }
  .stat { background: var(--surface); padding: 14px 16px; }
  .stat .k { font: 500 11px/1 var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--text-3); }
  .stat .v { font-family: var(--mono); font-variant-numeric: tabular-nums; font-size: 21px; margin-top: 6px; letter-spacing: -.02em; }
  .stat .v.warn { color: var(--warn); }
  .stat .v.err { color: var(--err); }

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

  .login-wrap { min-height: calc(100vh - 39px); display: grid; place-items: center; padding: 24px; }
  .login { width: 100%; max-width: 360px; }
  .login .card-body { padding: 26px; }
  .login .mark { padding: 0; margin-bottom: 20px; }

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

  @media (max-width: 820px) {
    .shell { grid-template-columns: 1fr; }
    .rail { flex-direction: row; align-items: center; gap: 14px; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--border); padding: 12px 14px; }
    .rail .nav { flex-direction: row; }
    .rail-foot { display: none; }
    main { padding: 22px 16px 48px; }
    .grid-2 { grid-template-columns: 1fr; }
    .page-head { flex-direction: column; gap: 12px; }
  }

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

.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px; }
.login { width: 100%; max-width: 360px; }
.login .card-body { padding: 26px; }
.login .mark { padding: 0; margin-bottom: 20px; }

/* ---------- sparkline ---------- */
/* One series, so no legend: the row's hostname names it. The scale starts at
   zero — cropping the baseline turns a wobble into a cliff. */

.spark { display: block; overflow: visible; }
.spark-area { fill: var(--accent); fill-opacity: .10; stroke: none; }
.spark-line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2;
  stroke-linejoin: round;
  stroke-linecap: round;
}
/* A 2px ring in the surface colour keeps the end marker legible where it
   crosses the line. */
.spark-end { fill: var(--accent); stroke: var(--surface); stroke-width: 2; }
.spark-hit { fill: transparent; }
.spark-hit:hover { fill: var(--accent); fill-opacity: .07; }

tbody tr:hover .spark-end { stroke: var(--surface-2); }

.stat .v .unit { font-size: 13px; color: var(--text-3); letter-spacing: 0; }