:root {
  color-scheme: light dark;
  --page: #f3f1eb;
  --surface: #faf9f5;
  --surface-strong: #e8e5dc;
  --ink: #1b1c19;
  --muted: #65665f;
  --line: #cbc9c0;
  --accent: #d84f2b;
  --accent-ink: #fff8f3;
  --focus: #1671b8;
  --radius: 14px;
  --shadow: 0 18px 50px rgba(72, 65, 48, 0.1);
  font-family: Aptos, "Segoe UI", system-ui, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --page: #151513;
    --surface: #1d1e1a;
    --surface-strong: #292a25;
    --ink: #f0efe9;
    --muted: #aaa99f;
    --line: #3c3d37;
    --accent: #f27450;
    --accent-ink: #20110d;
    --focus: #73b8ee;
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.28);
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-width: 320px;
  min-height: 100dvh;
  background: var(--page);
  color: var(--ink);
}

button, select { font: inherit; }

button, select, a { -webkit-tap-highlight-color: transparent; }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: 1rem;
  z-index: 10;
  transform: translateY(-180%);
  padding: .65rem .9rem;
  border-radius: 10px;
  background: var(--ink);
  color: var(--page);
}

.skip-link:focus { transform: translateY(0); }

.site-header {
  width: min(1440px, calc(100% - 48px));
  height: 72px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--line);
}

.brand {
  color: var(--ink);
  text-decoration: none;
  font-weight: 720;
  letter-spacing: -.03em;
}

.live-state {
  display: flex;
  align-items: center;
  gap: .6rem;
  color: var(--muted);
  font-size: .82rem;
}

.status-indicator {
  width: .55rem;
  height: .55rem;
  border-radius: 50%;
  background: var(--accent);
}

main, footer {
  width: min(1440px, calc(100% - 48px));
  margin-inline: auto;
}

.overview {
  min-height: min(620px, calc(100dvh - 72px));
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(360px, .65fr);
  gap: clamp(3rem, 8vw, 9rem);
  align-items: center;
  padding-block: 4rem;
}

.eyebrow {
  margin: 0 0 1.2rem;
  color: var(--accent);
  font-size: .73rem;
  font-weight: 750;
  letter-spacing: .15em;
  text-transform: uppercase;
}

h1, h2, h3, p { margin-top: 0; }

h1 {
  max-width: 820px;
  margin-bottom: 1.4rem;
  font-size: clamp(3rem, 7vw, 6.7rem);
  line-height: .93;
  letter-spacing: -.065em;
  font-weight: 730;
}

.overview-copy > p:last-child {
  max-width: 60ch;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.65;
}

.metrics {
  margin: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
  box-shadow: var(--shadow);
}

.metrics div {
  min-height: 145px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--surface);
}

.metrics dt {
  color: var(--muted);
  font-size: .78rem;
}

.metrics dd {
  margin: 0;
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: clamp(1.35rem, 3vw, 2.45rem);
  letter-spacing: -.04em;
}

.pipeline-section, .workspace, .activity-section {
  padding-block: 5rem;
  border-top: 1px solid var(--line);
}

.decision-banner {
  margin-bottom: 5rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--accent) 7%, var(--surface));
}

.decision-banner h2 { margin-bottom: 1rem; }

.decision-banner > p:not(.eyebrow) {
  max-width: 75ch;
  color: var(--muted);
  line-height: 1.6;
}

.decision-banner ul {
  max-width: 78ch;
  margin-bottom: 0;
  padding-left: 1.25rem;
  color: var(--muted);
  line-height: 1.65;
}

h2 {
  margin-bottom: 1.25rem;
  font-size: clamp(1.8rem, 3vw, 3rem);
  line-height: 1;
  letter-spacing: -.045em;
}

.pipeline {
  display: grid;
  grid-template-columns: repeat(8, minmax(110px, 1fr));
  gap: .65rem;
  overflow-x: auto;
  padding-block: .5rem;
  scrollbar-width: thin;
}

.stage {
  min-height: 116px;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: transparent;
}

.stage.active {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 9%, var(--surface));
}

.evidence-ledger { grid-column: 1 / -1; }

.evidence-row {
  display: grid;
  grid-template-columns: minmax(110px, 1.4fr) repeat(3, minmax(70px, 1fr));
  gap: .75rem;
  padding-block: .7rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: .78rem;
}

.evidence-row:last-child { border-bottom: 0; }
.evidence-row strong { color: var(--ink); }

.gate-list { list-style: none; padding: 0; }

.gate-check {
  display: flex;
  gap: .6rem;
  align-items: baseline;
  padding-block: .35rem;
}

.gate-check span { width: 1rem; font-weight: 800; }
.gate-check.failed span { color: var(--accent); }
.gate-check.passed span { color: #43865a; }

.kill-block {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  background: color-mix(in srgb, var(--accent) 5%, transparent);
}

@media (max-width: 560px) {
  .evidence-row { grid-template-columns: 1fr; gap: .25rem; }
}

.stage-count {
  display: block;
  margin-bottom: 1.8rem;
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 1.5rem;
}

.stage-name {
  color: var(--muted);
  font-size: .74rem;
  line-height: 1.25;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, .9fr);
  gap: clamp(2rem, 5vw, 5rem);
  align-items: start;
}

.section-heading {
  margin-bottom: 1.8rem;
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 1.5rem;
}

.section-heading h2 { margin-bottom: .55rem; }

.section-heading p {
  margin-bottom: 0;
  color: var(--muted);
  line-height: 1.55;
}

.filter-control {
  display: grid;
  gap: .4rem;
  color: var(--muted);
  font-size: .75rem;
}

select {
  min-width: 150px;
  min-height: 42px;
  padding: .55rem .8rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
  color: var(--ink);
}

.candidate-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .8rem;
}

.candidate-card {
  width: 100%;
  min-height: 210px;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  text-align: left;
  background: var(--surface);
  color: var(--ink);
  cursor: pointer;
  transition: transform .18s ease, border-color .18s ease, background-color .18s ease;
}

.candidate-card:hover { border-color: color-mix(in srgb, var(--accent) 55%, var(--line)); }
.candidate-card:active { transform: translateY(1px); }
.candidate-card.selected { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 6%, var(--surface)); }

.candidate-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  color: var(--muted);
  font-size: .72rem;
}

.candidate-card h3 {
  margin: 1.35rem 0 .65rem;
  font-size: 1.18rem;
  line-height: 1.15;
  letter-spacing: -.025em;
}

.candidate-card > p {
  margin-bottom: auto;
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.5;
}

.evidence-counts {
  margin-top: 1.2rem;
  display: flex;
  gap: 1rem;
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: .72rem;
}

.detail-panel {
  position: sticky;
  top: 1.5rem;
  min-height: 620px;
  padding: clamp(1.35rem, 3vw, 2.4rem);
  border-radius: var(--radius);
  background: var(--ink);
  color: var(--page);
  box-shadow: var(--shadow);
}

.detail-placeholder {
  max-width: 28ch;
  color: color-mix(in srgb, var(--page) 65%, transparent);
  font-size: 1.4rem;
  line-height: 1.35;
}

.detail-header {
  padding-bottom: 1.5rem;
  border-bottom: 1px solid color-mix(in srgb, var(--page) 20%, transparent);
}

.detail-header .status-label { color: var(--accent); }

.detail-header h2 {
  margin: .8rem 0 1rem;
  font-size: clamp(2rem, 4vw, 4rem);
}

.detail-header p {
  margin-bottom: 0;
  color: color-mix(in srgb, var(--page) 72%, transparent);
  line-height: 1.55;
}

.chain {
  margin: 1.4rem 0 0;
  display: grid;
  gap: .85rem;
}

.chain div {
  display: grid;
  grid-template-columns: 32px 1fr;
  gap: .8rem;
  align-items: start;
}

.chain dt {
  width: 32px;
  height: 32px;
  border: 1px solid color-mix(in srgb, var(--page) 24%, transparent);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--accent);
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
}

.chain dd {
  margin: .35rem 0 0;
  color: color-mix(in srgb, var(--page) 80%, transparent);
  line-height: 1.5;
}

.detail-grid {
  margin-top: 1.8rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.detail-block {
  padding-top: 1rem;
  border-top: 1px solid color-mix(in srgb, var(--page) 20%, transparent);
}

.detail-block h3 {
  margin-bottom: .7rem;
  color: color-mix(in srgb, var(--page) 62%, transparent);
  font-size: .72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .1em;
}

.detail-block p, .detail-block li {
  color: color-mix(in srgb, var(--page) 82%, transparent);
  font-size: .86rem;
  line-height: 1.5;
}

.detail-block ul { margin: 0; padding-left: 1rem; }

.validation-block { grid-column: 1 / -1; }

.validation-block strong { color: var(--accent); }

.source-links {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
}

.source-links a {
  padding: .5rem .65rem;
  border: 1px solid color-mix(in srgb, var(--page) 24%, transparent);
  border-radius: 10px;
  color: var(--page);
  font-size: .75rem;
  text-decoration: none;
}

.source-links a:hover { border-color: var(--accent); }

.activity-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.activity-item {
  padding: 1.2rem 0;
  border-top: 1px solid var(--line);
}

.activity-item time {
  color: var(--muted);
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: .72rem;
}

.activity-item p { margin: .65rem 0 0; line-height: 1.5; }

footer {
  padding-block: 2rem 4rem;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  color: var(--muted);
  font-size: .8rem;
}

footer p { margin: 0; }

.skeleton-block {
  height: 210px;
  border-radius: var(--radius);
  background: var(--surface-strong);
  opacity: .65;
}

.empty-state {
  padding: 4rem 1rem;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  color: var(--muted);
  text-align: center;
}

.error-banner {
  position: fixed;
  left: 50%;
  bottom: 1rem;
  width: min(620px, calc(100% - 32px));
  transform: translateX(-50%);
  padding: 1rem 1.2rem;
  border-radius: 12px;
  background: var(--ink);
  color: var(--page);
  box-shadow: var(--shadow);
}

@media (max-width: 900px) {
  .overview, .workspace { grid-template-columns: 1fr; }
  .overview { min-height: auto; gap: 3rem; }
  .detail-panel { position: static; min-height: 0; }
}

@media (max-width: 680px) {
  .site-header, main, footer { width: min(100% - 32px, 1440px); }
  .site-header { height: 64px; }
  .overview { padding-block: 4rem; }
  h1 { font-size: clamp(3rem, 16vw, 4.6rem); }
  .metrics, .candidate-list, .activity-list, .detail-grid { grid-template-columns: 1fr; }
  .metrics div { min-height: 110px; }
  .section-heading { align-items: stretch; flex-direction: column; }
  .filter-control, select { width: 100%; }
  footer { flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}