:root {
  --bg: #0d1117;
  --bg-surface: #161b22;
  --bg-elevated: #1c2128;
  --border: #30363d;
  --text: #e6edf3;
  --text-dim: #7d8590;
  --cyan: #58a6ff;
  --green: #3fb950;
  --yellow: #d29922;
  --red: #f85149;
  --orange: #db6d28;
  --purple: #bc8cff;
  --font-mono: 'SF Mono', 'Cascadia Code', 'Fira Code', 'Consolas', monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  min-height: 100vh;
}

header {
  text-align: center;
  padding: 32px 16px 16px;
  border-bottom: 1px solid var(--border);
}

header h1 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: 2px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.logo {
  flex-shrink: 0;
}

.explainer {
  color: var(--text-dim);
  font-size: 12px;
  margin-top: 12px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.7;
}

.subtitle {
  color: var(--text-dim);
  font-size: 11px;
  margin-top: 8px;
  font-style: italic;
  opacity: 0.6;
}

/* Phase tabs */
nav {
  display: flex;
  justify-content: center;
  gap: 4px;
  padding: 16px;
  border-bottom: 1px solid var(--border);
}

.tab {
  padding: 8px 16px;
  border: 1px solid var(--border);
  border-radius: 4px;
  cursor: pointer;
  color: var(--text-dim);
  background: transparent;
  font-family: var(--font-mono);
  font-size: 12px;
  transition: all 0.15s;
}

.tab:hover {
  border-color: var(--text-dim);
  color: var(--text);
}

.tab.active {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(88, 166, 255, 0.08);
}

.tab.intercepted {
  border-color: var(--orange);
  color: var(--orange);
}

.tab.intercepted:hover {
  border-color: var(--orange);
  color: var(--orange);
  background: rgba(219, 109, 40, 0.08);
}

.tab.intercepted.active {
  border-color: var(--orange);
  color: var(--orange);
  background: rgba(219, 109, 40, 0.12);
}

/* Main layout */
main {
  max-width: 1000px;
  margin: 0 auto;
  padding: 24px 16px;
}

.loading {
  text-align: center;
  color: var(--text-dim);
  padding: 64px;
}

/* Context grid (top) */
.context-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 32px;
  align-items: start;
}

/* Panels */
.panel {
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-surface);
}

.panel-header {
  padding: 8px 12px;
  border-bottom: 1px solid var(--border);
  font-size: 10px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-dim);
}

.panel-body {
  padding: 12px;
}

/* Product brief text */
.brief-text {
  color: var(--text-dim);
  line-height: 1.7;
  font-size: 11px;
}

/* Worker pool */
.worker-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 2px 0;
  font-size: 11px;
}

.worker-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  display: inline-block;
  flex-shrink: 0;
}

.worker-dot.working { background: var(--green); box-shadow: 0 0 6px var(--green); }
.worker-dot.idle { background: var(--text-dim); opacity: 0.4; }

.worker-name { flex: 1; }
.worker-type.agent { color: var(--cyan); }
.worker-type.human { color: var(--yellow); }
.worker-status { color: var(--text-dim); font-size: 10px; }
.worker-status.working { color: var(--green); font-weight: 600; }

/* Code state */
.file-row {
  display: flex;
  gap: 10px;
  padding: 2px 0;
  font-size: 11px;
}

.file-name { color: var(--text); }
.file-lines { color: var(--text-dim); }
.diff-added { color: var(--green); font-weight: 600; }
.diff-changed { color: var(--yellow); font-weight: 600; }

/* ─── Narrative steps ─── */

.narrative {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.step {
  position: relative;
  padding-left: 48px;
  padding-bottom: 28px;
}

.step:last-child {
  padding-bottom: 0;
}

/* Vertical connector line between steps */
.step::before {
  content: '';
  position: absolute;
  left: 17px;
  top: 36px;
  bottom: 0;
  width: 1px;
  background: var(--border);
}

.step:last-child::before {
  display: none;
}

.step-header {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 12px;
}

.step-num {
  position: absolute;
  left: 0;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  color: var(--cyan);
  flex-shrink: 0;
}

.step-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Intercepted step — security gate fired */
.step.step-intercepted .step-num {
  border-color: var(--orange);
  color: var(--orange);
}

.step.step-intercepted .step-title {
  color: var(--orange);
}

.step.step-intercepted::before {
  background: var(--orange);
  opacity: 0.4;
}

.step-desc {
  font-size: 11px;
  color: var(--text-dim);
  margin-top: 2px;
  line-height: 1.6;
}

.step-content {
  /* Content area for each step */
}

/* Step 1: Progress */
.progress-empty {
  color: var(--text-dim);
  font-style: italic;
  font-size: 12px;
}

.progress-summary {
  color: var(--text-dim);
  font-size: 11px;
  margin-bottom: 8px;
}

.progress-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  font-size: 12px;
}

.progress-check {
  color: var(--green);
  font-weight: 600;
  width: 14px;
  flex-shrink: 0;
}

.progress-title {
  flex: 1;
  color: var(--text);
}

.progress-worker {
  font-size: 10px;
  flex-shrink: 0;
}

.progress-worker.agent { color: var(--cyan); }
.progress-worker.human { color: var(--yellow); }

.progress-status {
  font-size: 10px;
  color: var(--green);
  text-transform: uppercase;
}

/* Step 2: Code state inline */
.code-state-inline {
  padding: 10px 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.code-version-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  margin-bottom: 6px;
}

/* Step 3: Inferred phase / analysis */
.analysis {
  padding: 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-dim);
  font-style: italic;
  margin-bottom: 12px;
  line-height: 1.7;
  font-size: 12px;
}

.work-unit {
  border: 1px solid var(--cyan);
  border-radius: 6px;
  background: var(--bg-surface);
}

.work-unit-header {
  padding: 10px 12px;
  border-bottom: 1px solid rgba(88, 166, 255, 0.2);
}

.work-unit-title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text);
}

.work-unit-meta {
  display: flex;
  gap: 16px;
  margin-top: 4px;
  font-size: 11px;
}

.work-unit-meta span { color: var(--text-dim); }
.work-unit-meta .value { color: var(--cyan); }

.work-unit-body {
  padding: 12px;
  color: var(--text-dim);
  line-height: 1.7;
  font-size: 12px;
}

.work-unit-files {
  margin-top: 8px;
}

.work-unit-files span {
  display: inline-block;
  padding: 2px 8px;
  background: var(--bg-elevated);
  border-radius: 3px;
  margin-right: 6px;
  margin-top: 4px;
  font-size: 11px;
  color: var(--text);
}

/* Step 3: Routing */
.routing-narrative {
  display: flex;
  align-items: stretch;
  gap: 16px;
  margin-bottom: 10px;
}

.route-pair {
  flex: 1;
  padding: 10px 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.route-role {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.route-who {
  color: var(--text);
  font-size: 12px;
}

.route-arrow {
  color: var(--text-dim);
  font-size: 18px;
  flex-shrink: 0;
}

.route-explanation {
  color: var(--text-dim);
  font-size: 11px;
  font-style: italic;
  line-height: 1.6;
}

/* Step 4: Policy */
.policy-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-bottom: 10px;
}

.policy-item {
  padding: 8px 12px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 6px;
}

.policy-label {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  margin-bottom: 4px;
}

.policy-value {
  color: var(--text);
  font-size: 12px;
}

.policy-reason {
  color: var(--text-dim);
  font-size: 11px;
  font-style: italic;
  line-height: 1.6;
}

.gate-badge {
  display: inline-block;
  padding: 1px 8px;
  border-radius: 3px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.gate-badge.review { background: rgba(210, 153, 34, 0.2); color: var(--yellow); }
.gate-badge.security_review { background: rgba(248, 81, 73, 0.2); color: var(--red); }
.gate-badge.auto_merge { background: rgba(63, 185, 80, 0.2); color: var(--green); }

.artifact-badge {
  display: inline-block;
  padding: 1px 8px;
  background: rgba(219, 109, 40, 0.15);
  color: var(--orange);
  border-radius: 3px;
  font-size: 11px;
}

/* Step 5: Outcome */
.outcome {
  padding: 14px;
  border-radius: 6px;
}

.outcome.merged {
  background: rgba(63, 185, 80, 0.08);
  border: 1px solid rgba(63, 185, 80, 0.3);
}

.outcome.approved {
  background: rgba(210, 153, 34, 0.08);
  border: 1px solid rgba(210, 153, 34, 0.3);
}

.outcome-status {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 6px;
}

.outcome-status.merged { color: var(--green); }
.outcome-status.approved { color: var(--yellow); }

.outcome-note {
  color: var(--text-dim);
  font-style: italic;
  font-size: 12px;
  line-height: 1.6;
}

.outcome-version {
  margin-top: 8px;
  color: var(--text-dim);
  font-size: 11px;
}

/* Footer */
footer {
  border-top: 1px solid var(--border);
  padding: 16px;
  text-align: center;
  color: var(--text-dim);
  font-size: 11px;
}

/* Responsive */
@media (max-width: 768px) {
  .context-grid {
    grid-template-columns: 1fr;
  }
  .policy-grid {
    grid-template-columns: 1fr;
  }
  .routing-narrative {
    flex-direction: column;
  }
  .route-arrow {
    transform: rotate(90deg);
    text-align: center;
  }
}