/* ops-control. Hand-written, no framework. Colours are tokens so light and
   dark are one block each; status is always icon + label + colour. */

:root {
  color-scheme: light;
  --page: #f6f6f3;
  --surface: #fcfcfb;
  --surface-2: #f0efec;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #7a7873;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, 0.1);
  --border-strong: rgba(11, 11, 11, 0.18);
  --accent: #1c5cab;
  --accent-ink: #ffffff;
  --accent-wash: #e6effb;
  --series-1: #2a78d6;
  --series-2: #eb6834;
  --series-3: #1baf7a;
  --good: #0ca30c;
  --warning: #fab219;
  --serious: #ec835a;
  --critical: #d03b3b;
  --neutral: #898781;
  --good-ink: #006300;
  --warning-ink: #7a5200;
  --critical-ink: #a32020;
  --good-wash: #e7f5e7;
  --warning-wash: #fdf3dc;
  --critical-wash: #fbe9e9;
  --neutral-wash: #efeee9;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 2px 8px rgba(0, 0, 0, 0.04);
  --radius: 10px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #0f0f0e;
    --surface: #1a1a19;
    --surface-2: #232321;
    --ink: #f4f4f1;
    --ink-2: #c3c2b7;
    --muted: #97958e;
    --grid: #2c2c2a;
    --axis: #45443f;
    --border: rgba(255, 255, 255, 0.09);
    --border-strong: rgba(255, 255, 255, 0.16);
    --accent: #5598e7;
    --accent-ink: #0b0b0b;
    --accent-wash: #16263b;
    --series-1: #3987e5;
    --series-2: #d95926;
    --series-3: #199e70;
    --good-ink: #3fcb3f;
    --warning-ink: #fab219;
    --critical-ink: #f07a7a;
    --good-wash: #132a13;
    --warning-wash: #33280d;
    --critical-wash: #3a1818;
    --neutral-wash: #262624;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font: 15px/1.5 var(--font);
}
a { color: var(--accent); }
code, .mono { font-family: var(--mono); font-size: 0.9em; }
h1, h2, h3 { line-height: 1.25; margin: 0; }
h1 { font-size: 1.35rem; }
h2 { font-size: 1.1rem; }
h3 { font-size: 0.98rem; }
.muted { color: var(--muted); }
.small { font-size: 0.85rem; }
.num { font-variant-numeric: tabular-nums; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* --- top bar --------------------------------------------------------- */
.topbar {
  position: sticky; top: 0; z-index: 10;
  background: color-mix(in srgb, var(--surface) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1240px; margin: 0 auto; padding: 10px 16px;
  display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.brand {
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 650; color: var(--ink); text-decoration: none; letter-spacing: -0.01em;
}
.brand-mark {
  width: 18px; height: 18px; border-radius: 5px; display: inline-block;
  background: linear-gradient(180deg, var(--accent) 0 50%, var(--series-1) 50% 100%);
}
.nav { display: flex; gap: 4px; flex: 1; }
.nav a {
  color: var(--ink-2); text-decoration: none; padding: 6px 10px; border-radius: 8px; font-weight: 500;
}
.nav a:hover { background: var(--surface-2); }
.nav a[aria-current="page"] { background: var(--accent-wash); color: var(--accent); }

.page { max-width: 1240px; margin: 0 auto; padding: 20px 16px 64px; outline: none; }
.section { margin-top: 28px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }

.alert {
  max-width: 1240px; margin: 12px auto 0; padding: 10px 14px;
  background: var(--critical-wash); color: var(--critical-ink);
  border: 1px solid var(--border); border-radius: var(--radius);
}

/* --- buttons ------------------------------------------------------------ */
.btn {
  font: inherit; font-weight: 550; font-size: 0.9rem;
  border: 1px solid var(--border-strong); background: var(--surface); color: var(--ink);
  padding: 7px 14px; border-radius: 8px; cursor: pointer; min-height: 36px;
  display: inline-flex; align-items: center; gap: 6px;
}
.btn:hover:not(:disabled) { background: var(--surface-2); }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.btn-primary:hover:not(:disabled) { background: var(--accent); filter: brightness(1.08); }
.btn-danger { background: var(--critical); border-color: var(--critical); color: #fff; }
.btn-danger:hover:not(:disabled) { background: var(--critical); filter: brightness(1.08); }
.btn-ghost { background: transparent; }
.btn-small { padding: 4px 10px; min-height: 30px; font-size: 0.85rem; }
.btn svg { width: 14px; height: 14px; }

/* --- status pill / badge ------------------------------------------------- */
.pill, .badge {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 0.8rem; font-weight: 600; padding: 2px 9px 2px 7px; border-radius: 999px;
  white-space: nowrap; border: 1px solid transparent;
}
.pill svg, .badge svg { width: 13px; height: 13px; flex: none; }
.s-good { background: var(--good-wash); color: var(--good-ink); }
.s-good svg { color: var(--good); }
.s-warning { background: var(--warning-wash); color: var(--warning-ink); }
.s-warning svg { color: var(--warning); }
.s-critical { background: var(--critical-wash); color: var(--critical-ink); }
.s-critical svg { color: var(--critical); }
.s-neutral { background: var(--neutral-wash); color: var(--ink-2); }
.s-neutral svg { color: var(--neutral); }
.s-busy { background: var(--accent-wash); color: var(--accent); }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; flex: none; }

/* --- cards & layout ------------------------------------------------------ */
.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 16px;
}
.grid { display: grid; gap: 14px; }
.grid-tiles { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-cards { grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); }
.grid-charts { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: minmax(0, 3fr) minmax(0, 2fr); }

/* --- verdict banner ---------------------------------------------------- */
.verdict {
  display: flex; gap: 14px; align-items: flex-start; padding: 14px 16px;
  border-radius: var(--radius); border: 1px solid var(--border);
}
.verdict .v-icon svg { width: 26px; height: 26px; }
.verdict h2 { font-size: 1.15rem; }
.verdict ul { margin: 4px 0 0; padding-left: 18px; }
.verdict.s-good .v-title { color: var(--good-ink); }
.verdict .v-note { margin-top: 4px; font-size: 0.85rem; color: var(--ink-2); }

/* --- stat tiles --------------------------------------------------------- */
.tile { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.tile-label { font-size: 0.82rem; color: var(--ink-2); font-weight: 550; display: flex; justify-content: space-between; gap: 6px; }
.tile-value { font-size: 1.7rem; font-weight: 650; letter-spacing: -0.02em; line-height: 1.2; }
.tile-sub { font-size: 0.82rem; color: var(--muted); }
.tile .spark { margin-top: 8px; height: 36px; }
.meter { height: 6px; border-radius: 3px; background: var(--surface-2); margin-top: 8px; overflow: hidden; }
.meter > span { display: block; height: 100%; border-radius: 3px; background: var(--series-1); }

/* --- project cards ------------------------------------------------------ */
.project { display: flex; flex-direction: column; gap: 10px; }
.project.is-flash { outline: 2px solid var(--accent); outline-offset: 2px; }
.project-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.project-head h3 { font-size: 1.02rem; }
.project-host { font-size: 0.85rem; overflow-wrap: anywhere; }
.reasons { margin: 0; padding: 8px 10px 8px 26px; border-radius: 8px; background: var(--warning-wash); font-size: 0.85rem; }
.reasons.is-critical { background: var(--critical-wash); }
.reasons.is-neutral { background: var(--neutral-wash); }
.services { list-style: none; margin: 0; padding: 0; border-top: 1px solid var(--border); }
.services li {
  display: grid; grid-template-columns: 16px minmax(0, 1fr) auto; gap: 8px; align-items: center;
  padding: 6px 0; border-bottom: 1px solid var(--border); font-size: 0.88rem;
}
.services .svc-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.services .svc-meta { color: var(--muted); font-size: 0.8rem; text-align: right; }
.services svg { width: 14px; height: 14px; }
.facts { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 0.84rem; color: var(--ink-2); margin: 0; }
.facts dt { color: var(--muted); display: inline; }
.facts dd { display: inline; margin: 0 0 0 4px; }
.facts div { white-space: nowrap; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: auto; }
.actions .note { font-size: 0.8rem; color: var(--muted); display: inline-flex; gap: 5px; align-items: center; }
.actions .note svg { width: 13px; height: 13px; }
.progress { font-size: 0.84rem; color: var(--accent); display: flex; align-items: center; gap: 8px; }
.spinner { width: 14px; height: 14px; border-radius: 50%; border: 2px solid var(--accent-wash); border-top-color: var(--accent); animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .spinner { animation: none; } }
.card-warn { border-color: var(--warning); background: var(--warning-wash); }

/* --- events ----------------------------------------------------------- */
.events { list-style: none; margin: 0; padding: 0; }
.events li { display: grid; grid-template-columns: 9.5em 11em minmax(0, 1fr); gap: 10px; padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 0.86rem; }
.events li:last-child { border-bottom: 0; }
.events time { color: var(--muted); font-variant-numeric: tabular-nums; }
.events .ev-project { font-weight: 550; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* --- tables ------------------------------------------------------------- */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.87rem; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { font-weight: 600; color: var(--ink-2); font-size: 0.8rem; }
td.r, th.r { text-align: right; font-variant-numeric: tabular-nums; }

/* --- segmented control ------------------------------------------------- */
.segmented { display: inline-flex; background: var(--surface-2); border-radius: 9px; padding: 3px; gap: 2px; }
.segmented button {
  font: inherit; font-size: 0.85rem; font-weight: 550; border: 0; background: transparent; color: var(--ink-2);
  padding: 4px 12px; border-radius: 7px; cursor: pointer; min-height: 30px;
}
.segmented button[aria-pressed="true"] { background: var(--surface); color: var(--ink); box-shadow: var(--shadow); }

/* --- charts ------------------------------------------------------------- */
.chart-card h3 { font-size: 0.92rem; }
.chart-head { display: flex; align-items: center; gap: 6px; }
.chart-sub { font-size: 0.8rem; color: var(--muted); }
.chart { position: relative; margin-top: 8px; touch-action: pan-y; }
.chart svg { display: block; width: 100%; overflow: visible; }
.chart .grid-line { stroke: var(--grid); stroke-width: 1; }
.chart .base-line { stroke: var(--axis); stroke-width: 1; }
.chart .ref-line { stroke: var(--muted); stroke-width: 1; }
.chart .tick { fill: var(--muted); font-size: 11px; font-variant-numeric: tabular-nums; }
.chart .line { fill: none; stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart .area { opacity: 0.1; }
.chart .end-dot { stroke: var(--surface); stroke-width: 2; }
.chart .cross { stroke: var(--axis); stroke-width: 1; }
.chart .empty { fill: var(--muted); font-size: 13px; }
.legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: 0.8rem; color: var(--ink-2); margin-top: 6px; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { width: 12px; height: 3px; border-radius: 2px; display: inline-block; }
.tooltip {
  position: absolute; pointer-events: none; z-index: 5; min-width: 120px;
  background: var(--surface); color: var(--ink); border: 1px solid var(--border-strong);
  border-radius: 8px; padding: 6px 9px; font-size: 0.8rem; box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
  font-variant-numeric: tabular-nums;
}
.tooltip .tt-time { color: var(--muted); margin-bottom: 2px; }
.tooltip .tt-row { display: flex; align-items: center; gap: 6px; justify-content: space-between; }
.tooltip .tt-row span { display: inline-flex; align-items: center; gap: 5px; }
.tooltip i { width: 8px; height: 8px; border-radius: 50%; display: inline-block; }
.s1 { stroke: var(--series-1); } .f1 { fill: var(--series-1); } i.s1, .legend i.s1 { background: var(--series-1); }
.s2 { stroke: var(--series-2); } .f2 { fill: var(--series-2); } i.s2, .legend i.s2 { background: var(--series-2); }
.s3 { stroke: var(--series-3); } .f3 { fill: var(--series-3); } i.s3, .legend i.s3 { background: var(--series-3); }

/* --- diagram ------------------------------------------------------------ */
.diagram { width: 100%; overflow-x: auto; }
.diagram svg { display: block; width: 100%; min-width: 320px; height: auto; font-family: var(--font); }
.dg-host { fill: none; stroke: var(--border-strong); stroke-width: 1.5; stroke-dasharray: 6 4; }
.dg-label { fill: var(--muted); font-size: 12px; }
.dg-title { fill: var(--ink); font-size: 14px; font-weight: 650; }
.dg-text { fill: var(--ink-2); font-size: 12px; }
.dg-small { fill: var(--muted); font-size: 11px; }
.dg-node { fill: var(--surface); stroke: var(--border-strong); stroke-width: 1.5; }
.dg-ext { fill: var(--surface-2); stroke: var(--axis); stroke-width: 1.2; stroke-dasharray: 4 3; }
.dg-bus { stroke: var(--series-1); stroke-width: 3; stroke-linecap: round; }
.dg-bus-label { fill: var(--series-1); font-size: 12px; font-weight: 600; }
.dg-wire { stroke: var(--axis); stroke-width: 1.5; fill: none; }
.dg-wire-edge { stroke: var(--series-1); stroke-width: 1.5; fill: none; }
.dg-wire-ext { stroke: var(--axis); stroke-width: 1.2; fill: none; stroke-dasharray: 4 3; }
.dg-wire-sock { stroke: var(--series-2); stroke-width: 2; fill: none; }
.dg-internal { fill: none; stroke: var(--axis); stroke-width: 1; stroke-dasharray: 3 3; }
.dg-svc { fill: var(--surface-2); stroke: none; }
.dg-vol { fill: var(--surface); stroke: var(--axis); stroke-width: 1; }
.dg-stack { cursor: pointer; }
.dg-stack .dg-frame { fill: var(--surface); stroke-width: 2; }
.dg-stack.is-bg .dg-frame { fill: var(--surface-2); }
.dg-stack.is-bg .dg-svc { fill: var(--surface); }
.dg-stack:hover .dg-frame, .dg-stack:focus-visible .dg-frame { filter: brightness(0.97); }
.dg-stack:focus { outline: none; }
.dg-stack:focus-visible .dg-frame { stroke-width: 3; }
.st-good .dg-frame { stroke: var(--good); }
.st-warning .dg-frame { stroke: var(--warning); }
.st-critical .dg-frame { stroke: var(--critical); }
.st-neutral .dg-frame { stroke: var(--neutral); stroke-dasharray: 5 4; }
.st-good .dg-state { fill: var(--good-ink); }
.st-warning .dg-state { fill: var(--warning-ink); }
.st-critical .dg-state { fill: var(--critical-ink); }
.st-neutral .dg-state { fill: var(--ink-2); }
.dg-icon-good { color: var(--good); } .dg-icon-warning { color: var(--warning); }
.dg-icon-critical { color: var(--critical); } .dg-icon-neutral { color: var(--neutral); }
.dg-legend { display: flex; gap: 14px; flex-wrap: wrap; font-size: 0.8rem; color: var(--ink-2); margin-top: 8px; }
.dg-legend span { display: inline-flex; gap: 6px; align-items: center; }
.dg-legend i { display: inline-block; width: 18px; height: 0; border-top: 2px solid; }
.dg-legend .l-edge { border-color: var(--series-1); }
.dg-legend .l-sock { border-color: var(--series-2); }
.dg-legend .l-ext { border-top-style: dashed; border-color: var(--axis); }
.dg-legend .l-bg { width: 14px; height: 10px; border: 1px solid var(--axis); border-radius: 2px; background: var(--surface-2); }
.dg-legend .l-int { border-top: 1px dashed var(--axis); }

/* --- architecture prose ---------------------------------------------- */
.arch-layout { display: grid; grid-template-columns: 220px minmax(0, 1fr); gap: 28px; align-items: start; }
.toc { position: sticky; top: 72px; font-size: 0.87rem; }
.toc ul { list-style: none; margin: 6px 0 16px; padding: 0; }
.toc a { color: var(--ink-2); text-decoration: none; display: block; padding: 3px 0; }
.toc a:hover { color: var(--accent); }
.toc .toc-h { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); font-weight: 650; }
.prose { max-width: 76ch; }
.prose section { padding-top: 12px; margin-bottom: 26px; scroll-margin-top: 70px; }
.prose h2 { font-size: 1.15rem; margin: 6px 0 8px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.prose h3 { margin: 14px 0 4px; font-size: 0.95rem; }
.prose p, .prose li { color: var(--ink-2); }
.prose p { margin: 6px 0; }
.prose ul, .prose ol { padding-left: 20px; margin: 6px 0; }
.prose dl { display: grid; grid-template-columns: max-content minmax(0, 1fr); gap: 4px 14px; margin: 8px 0; font-size: 0.9rem; }
.prose dt { color: var(--muted); }
.prose dd { margin: 0; color: var(--ink-2); }
.prose .callout { background: var(--warning-wash); border-radius: 8px; padding: 8px 12px; color: var(--ink); }
.prose section.is-flash { background: var(--accent-wash); border-radius: 8px; transition: background 1.5s; }

/* --- dialog / toast ------------------------------------------------------ */
.dialog {
  border: 1px solid var(--border-strong); border-radius: 12px; padding: 0; width: min(440px, calc(100vw - 32px));
  background: var(--surface); color: var(--ink);
}
.dialog::backdrop { background: rgba(0, 0, 0, 0.4); }
.dialog-body { padding: 20px; display: flex; flex-direction: column; gap: 10px; }
.dialog-body p { margin: 0; color: var(--ink-2); }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 6px; }
input[type="text"], input[type="password"] {
  font: inherit; width: 100%; padding: 9px 11px; border-radius: 8px; border: 1px solid var(--border-strong);
  background: var(--surface); color: var(--ink); margin-top: 4px;
}
label { font-size: 0.87rem; font-weight: 550; color: var(--ink-2); }
.toast {
  position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); z-index: 20;
  background: var(--ink); color: var(--surface); padding: 10px 16px; border-radius: 10px; font-size: 0.9rem;
  max-width: calc(100vw - 32px); box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
}

/* --- login -------------------------------------------------------------- */
.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card {
  width: min(360px, 100%); background: var(--surface); border: 1px solid var(--border); border-radius: 14px;
  padding: 26px; display: flex; flex-direction: column; gap: 8px; box-shadow: var(--shadow);
}
.login-card h1 { display: flex; align-items: center; gap: 9px; }
.login-card p { margin: 0 0 8px; }
.login-card .btn { justify-content: center; margin-top: 10px; min-height: 42px; }
.form-error { color: var(--critical-ink); background: var(--critical-wash); border-radius: 8px; padding: 8px 10px; margin: 4px 0 0; font-size: 0.88rem; }

/* --- responsive --------------------------------------------------------- */
@media (max-width: 980px) {
  .grid-tiles { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .grid-charts, .grid-2 { grid-template-columns: minmax(0, 1fr); }
  .arch-layout { grid-template-columns: minmax(0, 1fr); }
  .toc { position: static; }
}
@media (max-width: 640px) {
  body { font-size: 14.5px; }
  .topbar-inner { gap: 8px 12px; }
  .nav { order: 3; flex-basis: 100%; overflow-x: auto; }
  #verdict-badge { margin-left: auto; }
  .grid-cards { grid-template-columns: minmax(0, 1fr); }
  .tile-value { font-size: 1.4rem; }
  .events li { grid-template-columns: minmax(0, 1fr); gap: 0; }
}

/* --- info toggles (what is this graph?) ------------------------------------ */
.info-btn {
  display: inline-flex; align-items: center; justify-content: center; flex: none;
  width: 22px; height: 22px; padding: 0; border: 0; border-radius: 50%;
  background: none; color: var(--muted); cursor: pointer; vertical-align: middle;
}
.info-btn svg { width: 16px; height: 16px; }
.info-btn:hover, .info-btn[aria-expanded="true"] { color: var(--accent); background: var(--accent-wash); }
.info-panel {
  margin: 8px 0; padding: 8px 10px; border-radius: 8px; background: var(--accent-wash);
  color: var(--ink); font-size: 0.84rem; font-weight: 400; line-height: 1.45;
}
.info-panel[hidden] { display: none; }
.tile-title { display: inline-flex; align-items: center; gap: 4px; }
.section-head h2 .info-btn, h1 .info-btn { margin-left: 6px; }

/* --- background services vs user-facing projects ------------------------------ */
.project.is-background { background: var(--surface-2); border-style: dashed; border-color: var(--border-strong); box-shadow: none; }
.bg-badge { margin-left: 8px; background: var(--neutral-wash); color: var(--ink-2); vertical-align: middle; font-weight: 550; }