/* Visuars visual design.
   White ground, black ink, forest green accent, monospace type.
   Red and amber are reserved for status. No external fonts or CDNs. */

:root {
  --ink: #101510;
  --ink-soft: #4a524a;
  --green: #228b22;
  --green-dark: #16651a;
  --green-pale: #e8f2e6;
  --gray-1: #f4f6f3;
  --gray-2: #dfe4dc;
  --gray-3: #9aa39a;
  --amber: #b7791f;
  --amber-pale: #fdf3e0;
  --red: #b42318;
  --red-pale: #fdeceb;
  --radius: 3px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --line: 1px solid var(--ink);
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: #fff;
  color: var(--ink);
  font: 14px/1.5 var(--mono);
}

a { color: var(--green-dark); text-decoration: underline; }
a:hover { color: var(--green); }
/* Focus is always visible. An operator tabbing through controls must be able to
   see where they are, so the outline is never suppressed. */
*:focus {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}
*:focus:not(:focus-visible) {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}

.skip {
  position: absolute; left: -9999px; top: 0; z-index: 50;
  background: #fff; border: var(--line); padding: 8px 12px;
}
.skip:focus { left: 8px; top: 8px; }

/* ------------------------------------------------------------------- header */

.app-bar {
  display: flex; align-items: center; gap: 18px; flex-wrap: wrap;
  border-bottom: 2px solid var(--ink);
  padding: 10px 18px;
  position: sticky; top: 0; background: #fff; z-index: 20;
}
.brand { font-weight: 700; letter-spacing: 0.14em; text-decoration: none; }
.app-bar nav { display: flex; align-items: center; gap: 14px; margin-left: auto; flex-wrap: wrap; }
.conn {
  border: var(--line); border-radius: var(--radius);
  padding: 2px 8px; font-size: 12px; text-transform: lowercase;
}
.conn[data-state="live"] { color: var(--green-dark); border-color: var(--green); background: var(--green-pale); }
.conn[data-state="connecting"] { color: var(--amber); border-color: var(--amber); background: var(--amber-pale); }
.conn[data-state="offline"] { color: var(--red); border-color: var(--red); background: var(--red-pale); }

main { max-width: 1500px; margin: 0 auto; padding: 16px 18px 64px; }

h1 { font-size: 20px; margin: 0 0 14px; }
h2 { font-size: 15px; margin: 0 0 10px; }
h3 { font-size: 14px; margin: 0 0 6px; }

/* ------------------------------------------------------------------- buttons */

button, select, input {
  font: inherit; color: inherit;
  background: #fff; border: var(--line); border-radius: var(--radius);
  padding: 6px 10px;
}
button { cursor: pointer; }
button:hover:not(:disabled) { background: var(--green); border-color: var(--green-dark); color: #fff; }
button:disabled { color: var(--gray-3); border-color: var(--gray-2); cursor: not-allowed; }
button.danger:hover { background: var(--red); border-color: var(--red); }
button.action { background: var(--green-pale); border-color: var(--green); }
input[type="search"] { min-width: 260px; }

/* -------------------------------------------------------------------- banner */

.banner {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  border: var(--line); border-radius: var(--radius);
  padding: 8px 12px; margin-bottom: 14px; font-size: 13px;
}
.banner.live { background: var(--green-pale); border-color: var(--green); }
.banner.history { background: var(--amber-pale); border-color: var(--amber); }

/* ------------------------------------------------------------------ controls */

.component { margin-bottom: 0; }
.component-title { color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.08em; font-size: 11px; margin-bottom: 6px; }
.component-note { color: var(--ink-soft); font-size: 12px; margin: 6px 0 0; }

.column { display: grid; gap: 16px; }
.row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; align-items: start; }
.grid { display: grid; gap: 16px; }
@media (max-width: 760px) { .row { grid-template-columns: 1fr; } .grid { grid-template-columns: 1fr !important; } }

.panel, .card, .chart-body, .table-body, .graph-body, .timeline-body, .calendar-body,
.metric-body, .progress-body, .status-body, .text-body, .filter-body {
  border: var(--line); border-radius: var(--radius); padding: 12px; background: #fff;
}
.text-body, .filter-body, .metric-body, .progress-body, .status-body { border: 0; padding: 0; }
.component-panel > .panel { border: var(--line); }

.scroll > * { max-width: 100%; }
.scroll { overflow-x: auto; }

/* --------------------------------------------------------------------- tabs */

.tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--ink); margin-bottom: 12px; flex-wrap: wrap; }
.tab { border: var(--line); border-bottom: 0; border-radius: var(--radius) var(--radius) 0 0; background: var(--gray-1); }
.tab.active { background: #fff; font-weight: 700; border-bottom: 2px solid #fff; margin-bottom: -2px; }
.tab-panel { animation: none; }

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

.data-table { border-collapse: collapse; width: 100%; font-size: 12px; }
.data-table th, .data-table td { border: var(--line); padding: 5px 8px; text-align: left; vertical-align: top; }
.data-table thead th { background: var(--gray-1); position: sticky; top: 0; }
.data-table tbody tr.selected { background: var(--green-pale); }
.data-table tbody tr[tabindex]:hover { background: var(--gray-1); cursor: pointer; }
.sort-header { border: 0; padding: 0; background: none; font-weight: 700; }
.sort-header:hover { background: none; color: var(--green-dark); text-decoration: underline; }

.table-alt { margin-top: 8px; }
.table-alt summary { cursor: pointer; font-size: 12px; color: var(--ink-soft); }
.table-alt[open] summary { margin-bottom: 6px; }
.chart-table { margin-top: 6px; }

/* --------------------------------------------------------------------- plots */

.plot { display: block; width: 100%; height: auto; overflow: visible; }
.axis { stroke: var(--ink); stroke-width: 1; }
.baseline { stroke: var(--ink); stroke-width: 1; stroke-dasharray: 2 2; }
.grid { stroke: var(--gray-2); stroke-width: 1; }
.tick { fill: var(--ink-soft); font-size: 10px; font-family: var(--mono); }
.empty { color: var(--ink-soft); padding: 18px 4px; font-style: italic; }
.note-text { fill: var(--ink-soft); font-size: 10px; }

.s1 { fill: var(--green); stroke: var(--green); }
.s2 { fill: #6f8f6f; stroke: #6f8f6f; }
.s3 { fill: #58665a; stroke: #58665a; }
.s4 { fill: #8aa87f; stroke: #8aa87f; }
.s5 { fill: #3f4a3f; stroke: #3f4a3f; }
.s6 { fill: #a8bda2; stroke: #a8bda2; }

.line { fill: none; stroke-width: 2; }
.area { stroke: none; fill-opacity: 0.22; }
.bar { stroke: var(--ink); stroke-width: 0.5; }
.dot { stroke: #fff; stroke-width: 0.8; }
.slice { stroke: #fff; stroke-width: 1.2; }
.swatch { stroke: var(--ink); stroke-width: 0.5; }
.line-key { stroke-width: 2; }
.legend-label { fill: var(--ink); font-size: 10px; font-family: var(--mono); }

.whisker { stroke: var(--ink); stroke-width: 1; }
.whisker-cap { stroke: var(--ink); stroke-width: 1; }
.box { stroke: var(--ink); stroke-width: 1; fill-opacity: 0.35; }
.median { stroke: var(--ink); stroke-width: 2; }
.outlier { fill: #fff; stroke: var(--ink); stroke-width: 1; }

.heat-0 { fill: #fff; stroke: var(--gray-2); }
.heat-1 { fill: #e2efe0; stroke: var(--gray-2); }
.heat-2 { fill: #bcd9b6; stroke: var(--gray-2); }
.heat-3 { fill: #8cc084; stroke: var(--gray-2); }
.heat-4 { fill: #4f9c48; stroke: var(--gray-2); }
.heat-5 { fill: var(--green-dark); stroke: var(--ink); }

.group-box { fill: none; stroke: var(--ink); stroke-dasharray: 3 3; }
.group-label { fill: var(--ink); font-size: 10px; font-weight: 700; }
.leaf { stroke: #fff; stroke-width: 1.2; }
.leaf-label { fill: #fff; font-size: 10px; pointer-events: none; }

/* ------------------------------------------------------------------- graph */

.flow-node { cursor: default; }
.node-box { fill: #fff; stroke: var(--ink); stroke-width: 1.4; }
.flow-node.node-ok .node-box { stroke: var(--green); }
.flow-node.node-warning .node-box { stroke: var(--amber); }
.flow-node.node-error .node-box { stroke: var(--red); }
.flow-node:focus-visible .node-box { outline: none; stroke-width: 3; }
.node-label { fill: var(--ink); font-size: 11px; font-family: var(--mono); }
.node-group { fill: var(--ink-soft); font-size: 9px; font-family: var(--mono); }
.node-group-bar { fill: var(--green); }
.flow-edge { stroke: var(--ink); stroke-width: 1.2; fill: none; }
.flow-back { stroke-dasharray: 5 3; }
.arrow-head { fill: var(--ink); }
.edge-label { fill: var(--ink-soft); font-size: 9px; font-family: var(--mono); }

/* ------------------------------------------------------------------- values */

.metric { font-size: 30px; line-height: 1.1; color: var(--green-dark); }
.delta { font-size: 12px; }
.delta.up { color: var(--green-dark); }
.delta.down { color: var(--red); }
.spark-holder { margin-top: 6px; }
.spark-holder .plot { width: 120px; height: auto; }

.pill {
  display: inline-block; border: var(--line); border-radius: 999px;
  padding: 2px 10px; font-size: 12px;
}
.status-bg-ok { background: var(--green-pale); border-color: var(--green); color: var(--green-dark); }
.status-bg-warning { background: var(--amber-pale); border-color: var(--amber); color: var(--amber); }
.status-bg-error { background: var(--red-pale); border-color: var(--red); color: var(--red); }
.status-bg-neutral { background: var(--gray-1); border-color: var(--gray-3); color: var(--ink-soft); }
.status-ok { color: var(--green-dark); }
.status-warning { color: var(--amber); }
.status-error { color: var(--red); }
.status-neutral { color: var(--ink); }

.progress-track { height: 14px; border: var(--line); border-radius: 999px; overflow: hidden; background: var(--gray-1); }
.progress-fill { height: 100%; }
.progress-fill.status-bg-ok { background: var(--green); }
.progress-fill.status-bg-warning { background: var(--amber); }
.progress-fill.status-bg-error { background: var(--red); }
.progress-fill.status-bg-neutral { background: var(--gray-3); }
.progress-caption { font-size: 12px; color: var(--ink-soft); margin-top: 4px; }

.filter-body { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.filter-label { font-size: 12px; color: var(--ink-soft); }

/* ----------------------------------------------------------------- calendar */

.calendar-grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 3px; }
.calendar-head { font-size: 10px; color: var(--ink-soft); text-align: center; }
.calendar-caption { margin: 0 0 8px; }
.calendar-cell {
  border: var(--line); border-radius: var(--radius); min-height: 46px;
  padding: 3px 5px; font-size: 11px; display: flex; flex-direction: column; gap: 2px;
}
.calendar-cell.pad { border: 0; }
.calendar-cell.selected { outline: 2px solid var(--green); }
.calendar-day { font-weight: 700; }
.calendar-value { color: var(--ink-soft); }

/* ------------------------------------------------------------------ library */

.library-head { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; margin-bottom: 12px; }
.library-head h1 { margin: 0; }
.stats {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 4px 18px; border: var(--line); border-radius: var(--radius);
  padding: 12px; margin-bottom: 18px;
}
.stats dt { font-size: 11px; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 0.06em; }
.stats dd { margin: 0 0 8px; font-weight: 700; }
.stats .meta { grid-column: 1 / -1; font-weight: 400; }
.card-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 12px; margin-bottom: 22px; }
.card { border: var(--line); border-radius: var(--radius); padding: 12px; }
.card h3 { margin-bottom: 4px; }
.meta { color: var(--ink-soft); font-size: 12px; margin: 0 0 10px; }
.card-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.history-inline { margin-top: 10px; border-top: var(--line); padding-top: 8px; }
.history-inline ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 4px; }
.history-inline button { width: 100%; text-align: left; font-size: 12px; }
.tree {
  margin-top: 10px; max-height: 260px; overflow: auto; font-size: 11px;
  background: var(--gray-1); border: var(--line); border-radius: var(--radius); padding: 8px;
}

.history-panel {
  position: fixed; right: 0; top: 0; bottom: 0; width: min(360px, 86vw);
  background: #fff; border-left: 2px solid var(--ink); padding: 16px;
  overflow: auto; z-index: 40;
}
.history-panel h2 { margin-top: 0; }
.history-panel ul { list-style: none; margin: 0 0 12px; padding: 0; display: grid; gap: 4px; }
.history-panel button { width: 100%; text-align: left; }
.history-panel .when { display: block; font-size: 11px; color: var(--ink-soft); font-weight: 400; }

.zoom-reset { margin-top: 6px; font-size: 12px; }

/* --------------------------------------------------------------------- auth */

body.auth { display: grid; place-items: center; min-height: 100vh; }
body.auth main { width: min(420px, 92vw); }
.login { border: var(--line); border-radius: var(--radius); padding: 22px; }
.login h1 { letter-spacing: 0.14em; }
.login form { display: grid; gap: 8px; margin-top: 14px; }
.login label { font-size: 12px; color: var(--ink-soft); }
.login input { padding: 8px 10px; }
.login button { margin-top: 6px; padding: 9px; }
.notice { color: var(--amber); font-size: 12px; margin-top: 12px; }
.error { color: var(--red); font-size: 12px; margin-top: 12px; }

/* -------------------------------------------------------------------- toast */

#toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%) translateY(20px);
  background: var(--ink); color: #fff; padding: 9px 16px; border-radius: var(--radius);
  opacity: 0; pointer-events: none; transition: opacity 0.15s, transform 0.15s; z-index: 60;
}
#toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

@media print {
  .app-bar, .banner, #toast, .history-panel { display: none; }
}