:root {
  --bg: #0F1417;
  --surface: #171D21;
  --border: #2A3238;
  --text: #E7ECEF;
  --text-dim: #C5CFD4;
  --muted: #8B98A0;
  --muted-dim: #63707A;
  --accent: #4FBDBA;
  --good: #5FBF95;
  --bad: #E2726E;
  --font-sans: 'IBM Plex Sans', -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', monospace;
  --font-display: 'Fraunces', Georgia, serif;
}

* { box-sizing: border-box; }

html, body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  margin: 0;
  overflow-x: hidden;
}

body {
  max-width: 72rem;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #06201F;
  padding: 0.5rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: 1rem; top: 1rem; }

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

.topbar { display: flex; flex-direction: column; gap: 0.3rem; margin-bottom: 1.4rem; }
.topbar-title { display: flex; align-items: center; gap: 0.65rem; flex-wrap: wrap; }
.page-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.9rem;
  margin: 0;
}
.mode-text { color: var(--muted-dim); font-size: 0.82rem; }

.status-line { font-size: 0.98rem; margin: 0.9rem 0 1.2rem; color: var(--text-dim); }
.status-line .word { font-weight: 600; }
.status-line .word.good { color: var(--good); }
.status-line .word.bad { color: var(--bad); }
.status-line .word.neutral { color: var(--muted); }

.kpi-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr));
  gap: 0.8rem;
  margin-bottom: 1rem;
}
.kpi-tile {
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  padding: 0.75rem 1rem;
}
.kpi-tile.good { border-left-color: var(--good); }
.kpi-tile.bad { border-left-color: var(--bad); }
.kpi-label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.05em; color: var(--muted); margin-bottom: 0.3rem; }
.kpi-value { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-size: 1.75rem; font-weight: 600; line-height: 1.15; }
.kpi-value.good { color: var(--good); }
.kpi-value.bad { color: var(--bad); }

.card-section + .card-section { margin-top: 1.2rem; padding-top: 1.2rem; border-top: 1px solid var(--border); }
.card-section-label {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted-dim);
  margin-bottom: 0.7rem;
}

.equation { display: flex; align-items: baseline; flex-wrap: wrap; gap: 0.5rem; font-size: 1rem; margin-bottom: 0.5rem; }
.equation-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem 1rem;
}
.equation-box.good { border-left-color: var(--good); }
.equation-box.bad { border-left-color: var(--bad); }
.equation .eq-item { display: flex; align-items: baseline; gap: 0.35rem; }
.equation .eq-label { font-size: 0.78rem; color: var(--muted); }
.equation .eq-val { font-family: var(--font-mono); font-variant-numeric: tabular-nums; font-weight: 600; }
.equation .eq-op { color: var(--muted-dim); font-size: 1.05rem; }
.equation .eq-verdict { font-weight: 700; padding: 0.15rem 0.65rem; border-radius: 999px; font-size: 0.82rem; text-transform: uppercase; letter-spacing: 0.03em; }
.equation .eq-verdict.good { color: #06201F; background: var(--good); }
.equation .eq-verdict.bad { color: #2B0906; background: var(--bad); }
.equation .eq-verdict.neutral { color: var(--text); background: var(--border); }

.narrative-line { display: grid; grid-template-columns: 11.5rem 1fr; gap: 0.9rem; padding: 0.45rem 0; align-items: baseline; }
.narrative-label { font-weight: 700; }
.narrative-label.good { color: var(--good); }
.narrative-label.bad { color: var(--bad); }
.narrative-label.neutral { color: var(--muted); }
.narrative-detail { color: var(--text-dim); font-size: 0.95rem; min-width: 0; }

@media (max-width: 30rem) {
  .narrative-line { grid-template-columns: 1fr; gap: 0.15rem; }
}
.status-line .time { color: var(--muted-dim); font-size: 0.85em; }

.navbar {
  display: flex;
  gap: 0.3rem;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1.3rem;
  overflow-x: auto;
}
.nav-tab {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 0.7rem 1rem;
  cursor: pointer;
  touch-action: manipulation;
  white-space: nowrap;
}
.nav-tab:hover { color: var(--text); }
.nav-tab[aria-current="page"] { color: var(--text); border-bottom-color: var(--accent); }

/* Closely-related cards sit side by side instead of stacking full-width one
   after another -- .card-half pairs up on wide screens and drops to a full
   row on narrow ones. */
.tab-panel { display: flex; flex-wrap: wrap; align-items: stretch; gap: 1rem; }
.tab-panel[hidden] { display: none; }
.tab-panel > .card { flex: 1 1 100%; min-width: 0; }
.tab-panel > .card.card-half { flex: 1 1 24rem; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--border);
  border-radius: 10px;
  padding: 1.1rem 1.25rem;
}
.card.accent-top { border-top-color: var(--accent); }
.card.good-top { border-top-color: var(--good); }
.card.bad-top { border-top-color: var(--bad); }
.card-head { position: relative; display: flex; align-items: center; gap: 0.3rem; }
.card-title {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--text);
  font-weight: 600;
}
.card-subtitle { font-size: 0.85rem; color: var(--muted); margin: 0.15rem 0 0.8rem; max-width: 65ch; }
.card-note { font-size: 0.86rem; color: var(--text-dim); margin: 0.6rem 0 0; }
.card-note code { font-family: var(--font-mono); font-size: 0.9em; color: var(--muted); }
.card-note.good { color: var(--good); }
.card-note.bad { color: var(--bad); }

/* Small "?" affordance next to a card title: hover/focus reveals a popover
   with the fuller explanation, keeping the visible subtitle short. */
.info-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.05rem;
  height: 1.05rem;
  border-radius: 50%;
  border: 1px solid var(--muted-dim);
  color: var(--muted);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  line-height: 1;
  padding: 0;
  cursor: pointer;
  touch-action: manipulation;
}
.info-btn:hover, .info-btn:focus-visible { border-color: var(--accent); color: var(--accent); }
.info-tip {
  display: none;
  position: absolute;
  z-index: 20;
  left: 0;
  top: 1.6rem;
  width: min(22rem, 80vw);
  background: #1D252A;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.65rem 0.8rem;
  font-size: 0.8rem;
  font-weight: 400;
  line-height: 1.5;
  color: var(--text-dim);
  text-transform: none;
  letter-spacing: normal;
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.45);
}
.info-btn:hover + .info-tip, .info-btn:focus-visible + .info-tip, .info-tip:hover { display: block; }

.metric-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(9.5rem, 1fr));
  gap: 0.7rem;
  margin-bottom: 1rem;
}
.metric-tile {
  background: var(--bg);
  border: 1px solid var(--border);
  border-left: 3px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.85rem;
}
.metric-tile.accent { border-left-color: var(--accent); }
.metric-tile.good { border-left-color: var(--good); }
.metric-tile.bad { border-left-color: var(--bad); }
.metric-label {
  font-size: 0.76rem;
  color: var(--muted);
  margin-bottom: 0.15rem;
}
.metric-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.2rem;
  font-weight: 500;
}
.metric-help { font-size: 0.76rem; color: var(--muted-dim); margin-top: 0.15rem; }
.metric-value.good { color: var(--good); }
.metric-value.bad { color: var(--bad); }

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--muted);
}
.badge.accent { color: var(--accent); border-color: var(--accent); background: rgba(79, 189, 186, 0.1); }
.badge-dot { width: 0.4rem; height: 0.4rem; border-radius: 50%; background: currentColor; flex-shrink: 0; }

.mini-bar {
  position: relative;
  width: 4rem;
  height: 0.35rem;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  display: inline-block;
  vertical-align: middle;
  margin-right: 0.5rem;
}
.mini-bar-fill { position: absolute; left: 0; top: 0; bottom: 0; background: var(--accent); border-radius: 999px; }
.mini-bar-fill.bad { background: var(--bad); }
.room-cell { display: flex; align-items: center; justify-content: flex-end; gap: 0; }

.path-row {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.path-row:last-child { border-bottom: none; }
.path-stage { font-family: var(--font-mono); font-size: 0.78rem; color: var(--muted-dim); width: 6.5rem; flex-shrink: 0; }
.path-word { font-weight: 600; width: 7rem; flex-shrink: 0; }
.path-word.good { color: var(--good); }
.path-word.bad { color: var(--bad); }
.path-word.neutral { color: var(--muted); }
.path-detail { font-size: 0.86rem; color: var(--text-dim); min-width: 0; word-break: break-word; }

.table-wrap { overflow-x: auto; margin-top: 1rem; }
table { border-collapse: collapse; width: 100%; font-size: 0.88rem; }
th, td { text-align: left; padding: 0.45rem 0.7rem; border-bottom: 1px solid var(--border); white-space: nowrap; }
th { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.04em; color: var(--muted); font-weight: 600; }
td.num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; text-align: right; }
td.wrap { white-space: normal; min-width: 20rem; }
td.good { color: var(--good); }
td.bad { color: var(--bad); }
tr.risk-bad td:first-child { border-left: 3px solid var(--bad); }
tr.risk-ok td:first-child { border-left: 3px solid transparent; }

details { margin-top: 1rem; }
summary {
  cursor: pointer;
  font-size: 0.88rem;
  color: var(--accent);
  padding: 0.3rem 0;
  touch-action: manipulation;
}
summary:hover { text-decoration: underline; }

.chip-row { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 1rem; margin-bottom: 1rem; }
.chip {
  font-family: var(--font-sans);
  font-size: 0.82rem;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  cursor: pointer;
  touch-action: manipulation;
}
.chip:hover { color: var(--text); border-color: var(--muted); }
.chip[aria-pressed="true"] { color: #06201F; background: var(--accent); border-color: var(--accent); font-weight: 500; }
.chip:disabled { opacity: 0.4; cursor: default; }
.chip:disabled:hover { color: var(--muted); border-color: var(--border); }

.pager-row { display: flex; align-items: center; gap: 1rem; margin-top: 0.75rem; }
.pager-label { font-family: var(--font-mono); font-size: 0.8rem; color: var(--muted); }

.chart-wrap { position: relative; height: 18rem; margin-bottom: 0.6rem; }

/* Vertical stepper -- the diagram and the detail are the same list, so they
   can't drift apart (a horizontal boxes-and-arrows diagram plus a separate
   card grid had grown out of sync: Order had no card at all). Pattern is
   the common "numbered steps with a connecting line" convention used for
   onboarding/order-tracking flows; a dashed connector marks Recovery as
   running alongside the last two steps rather than after them. */
.stepper { list-style: none; margin: 1.2rem 0 0; padding: 0; }
.step { position: relative; display: flex; gap: 1rem; padding-bottom: 1.5rem; }
.step:last-child { padding-bottom: 0; }
.step:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 1.05rem;
  top: 2.3rem;
  bottom: -0.3rem;
  width: 1px;
  background: var(--border);
  transform: translateX(-50%);
}
.step:has(+ .step-parallel)::before { background: none; border-left: 1px dashed var(--bad); width: 0; }
.step-marker {
  position: relative;
  z-index: 1;
  flex-shrink: 0;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text);
}
.step-marker.bad { border-color: var(--bad); color: var(--bad); }
.step-marker.accent { border-color: var(--accent); color: var(--accent); }
.step-body { flex: 1; min-width: 0; padding-top: 0.2rem; }
.step-title { position: relative; display: flex; align-items: center; flex-wrap: wrap; gap: 0.5rem; font-weight: 600; margin-bottom: 0.3rem; }
.step-tag { font-family: var(--font-mono); font-size: 0.74rem; font-weight: 400; color: var(--muted); }
.step-body p { margin: 0; font-size: 0.9rem; color: var(--text-dim); line-height: 1.55; }

@media (prefers-reduced-motion: reduce) {
  * { animation: none !important; transition: none !important; }
}