:root {
  color-scheme: dark;
  --bg: oklch(0.145 0.012 255);
  --bg-dots: oklch(0.31 0.018 255 / 0.28);
  --surface: oklch(0.19 0.014 255);
  --surface-raised: oklch(0.235 0.018 255);
  --surface-active: oklch(0.275 0.028 252);
  --line: oklch(0.37 0.022 255);
  --line-strong: oklch(0.53 0.035 255);
  --ink: oklch(0.95 0.008 255);
  --ink-soft: oklch(0.79 0.018 255);
  --muted: oklch(0.66 0.022 255);
  --plan: oklch(0.72 0.12 255);
  --execute: oklch(0.76 0.12 205);
  --validate: oklch(0.78 0.13 150);
  --decide: oklch(0.78 0.14 74);
  --loop: oklch(0.76 0.15 48);
  --danger: oklch(0.7 0.17 27);
  --focus: oklch(0.82 0.13 220);
  --success-line: oklch(0.58 0.09 150);
  --loop-line: oklch(0.48 0.1 48);
  --loop-surface: oklch(0.25 0.045 48);
  --error-line: oklch(0.48 0.1 28);
  --error-surface: oklch(0.24 0.055 28);
  --error-ink: oklch(0.86 0.09 28);
  --shadow: 0 20px 60px oklch(0.05 0.01 255 / 0.4);
  font-family: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
}

body {
  background: var(--bg);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.5;
}

button,
select {
  font: inherit;
}

button {
  color: inherit;
}

button:focus-visible,
select:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

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

code,
pre,
.ribbon-label,
.cycle-index,
.step-type,
.status-chip,
.step-metrics,
.evidence-summary dd {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}

.journey-app {
  min-height: 100dvh;
  background-color: var(--bg);
  background-image: radial-gradient(circle, var(--bg-dots) 1px, transparent 1px);
  background-size: 22px 22px;
}

.app-bar {
  position: sticky;
  z-index: 30;
  top: 0;
  min-height: 68px;
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 10px 22px;
  border-bottom: 1px solid var(--line);
  background: oklch(0.16 0.014 255 / 0.96);
}

.brand-lockup {
  min-width: 230px;
  display: flex;
  align-items: center;
  gap: 11px;
}

.brand-mark {
  width: 24px;
  height: 24px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  background:
    linear-gradient(90deg, transparent 45%, var(--ink) 45% 55%, transparent 55%),
    linear-gradient(transparent 45%, var(--ink) 45% 55%, transparent 55%);
  box-shadow: inset 0 0 0 5px var(--surface-raised);
}

.brand-lockup > div {
  display: grid;
}

.brand-lockup strong {
  font-size: 14px;
}

.brand-lockup span:last-child {
  color: var(--muted);
  font-size: 11px;
}

.run-picker {
  min-width: 0;
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
}

.run-picker > span {
  flex: none;
  color: var(--muted);
  font-size: 11px;
}

.run-picker select {
  width: min(540px, 100%);
  height: 44px;
  padding: 0 32px 0 11px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--ink-soft);
  text-overflow: ellipsis;
}

.zoom-switch {
  display: flex;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface);
}

.zoom-switch button {
  min-width: 54px;
  height: 44px;
  padding: 0 10px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
}

.zoom-switch button:hover {
  color: var(--ink);
}

.zoom-switch button.active {
  background: var(--surface-active);
  color: var(--ink);
  box-shadow: 0 1px 8px oklch(0.06 0.01 255 / 0.35);
}

.icon-button {
  width: 44px;
  height: 44px;
  display: grid;
  flex: none;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  cursor: pointer;
}

.icon-button:hover {
  border-color: var(--line-strong);
  background: var(--surface-raised);
}

.mission-strip {
  display: flex;
  align-items: stretch;
  gap: 20px;
  padding: 20px 24px;
  border-bottom: 1px solid var(--line);
  background: oklch(0.17 0.016 255 / 0.92);
}

.mission-copy {
  min-width: 0;
  flex: 1;
  display: flex;
  align-items: center;
  gap: 14px;
}

.mission-copy h1 {
  max-width: 75ch;
  font-size: 18px;
  font-weight: 650;
  line-height: 1.4;
  text-wrap: pretty;
}

.run-status {
  flex: none;
  padding: 4px 7px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 10px;
}

.input-ribbon {
  max-width: 48%;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--muted);
  white-space: nowrap;
}

.input-ribbon > * + * {
  padding-left: 8px;
  border-left: 1px solid var(--line);
}

.input-ribbon strong {
  max-width: 320px;
  overflow: hidden;
  color: var(--ink-soft);
  font-size: 12px;
  text-overflow: ellipsis;
}

.input-ribbon span {
  font-size: 10px;
}

.ribbon-label {
  color: var(--execute);
  font-size: 9px !important;
  font-weight: 700;
}

.workspace {
  min-height: calc(100dvh - 136px);
  display: flex;
}

.overview-canvas,
.flow-canvas {
  width: min(1180px, calc(100% - 48px));
  margin: 0 auto;
  padding: 42px 0 100px;
}

.zoom-evidence .flow-canvas {
  width: auto;
  min-width: 0;
  flex: 1;
  padding-right: 32px;
  padding-left: 32px;
}

.overview-heading,
.flow-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 32px;
  margin-bottom: 28px;
}

.overview-heading h2,
.flow-heading h2 {
  font-size: 21px;
  letter-spacing: -0.015em;
  text-wrap: balance;
}

.overview-heading p,
.flow-heading p {
  max-width: 55ch;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.65;
  text-wrap: pretty;
}

.flow-heading > div > span {
  display: block;
  margin-bottom: 5px;
  color: var(--plan);
  font-size: 11px;
}

.cycle-line {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
}

.cycle-line::before {
  content: "";
  position: absolute;
  top: 34px;
  bottom: 34px;
  left: 31px;
  width: 1px;
  background: var(--line-strong);
}

.cycle-line li {
  position: relative;
  padding-bottom: 14px;
}

.cycle-line button {
  position: relative;
  width: 100%;
  min-height: 138px;
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr) 24px;
  align-items: center;
  gap: 18px;
  padding: 20px 22px 20px 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  text-align: left;
  cursor: pointer;
  transition: 180ms cubic-bezier(0.22, 1, 0.36, 1);
}

.cycle-line button:hover {
  border-color: var(--line-strong);
  background: var(--surface-raised);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.cycle-index {
  position: relative;
  z-index: 1;
  width: 30px;
  height: 30px;
  display: grid;
  place-items: center;
  margin-left: 16px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--bg);
  color: var(--ink-soft);
  font-size: 10px;
}

.cycle-copy {
  min-width: 0;
}

.cycle-title-row {
  display: flex;
  align-items: center;
  gap: 12px;
}

.cycle-title-row h3 {
  font-size: 16px;
}

.cycle-copy > p {
  max-width: 78ch;
  margin-top: 7px;
  overflow: hidden;
  color: var(--ink-soft);
  font-size: 12px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cycle-facts,
.cycle-lifecycle {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
}

.cycle-facts {
  margin-top: 12px;
}

.cycle-facts span,
.cycle-lifecycle span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  color: var(--muted);
  font-size: 10px;
}

.cycle-facts span {
  padding: 3px 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
}

.cycle-lifecycle {
  margin-top: 12px;
}

.cycle-lifecycle span + span::before {
  content: "→";
  margin-right: 3px;
  color: var(--line-strong);
}

.cycle-lifecycle span.present {
  color: var(--ink-soft);
}

.cycle-open {
  color: var(--muted);
  transform: rotate(-90deg);
}

.status-chip {
  display: inline-flex;
  align-items: center;
  padding: 3px 7px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  color: var(--ink-soft);
  font-size: 9px;
  font-weight: 700;
  white-space: nowrap;
}

.status-passed,
.status-completed,
.status-accept,
.status-accepted {
  border-color: var(--success-line);
  color: var(--validate);
}

.status-failed,
.status-retry,
.status-revise,
.status-needs_replan {
  border-color: var(--loop-line);
  color: var(--loop);
}

.causal-spine {
  position: relative;
  width: min(900px, 100%);
  margin: 0 auto;
}

.causal-spine::before {
  content: "";
  position: absolute;
  top: 12px;
  bottom: 12px;
  left: 50%;
  width: 1px;
  background: var(--line-strong);
}

.flow-unit {
  position: relative;
  z-index: 1;
  padding-bottom: 42px;
}

.flow-connector {
  position: absolute;
  bottom: 11px;
  left: calc(50% - 13px);
  width: 26px;
  height: 26px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  background: var(--bg);
  color: var(--muted);
}

.step-node {
  position: relative;
  width: min(680px, 100%);
  margin: 0 auto;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  box-shadow: 0 12px 34px oklch(0.05 0.01 255 / 0.2);
  transition: 180ms cubic-bezier(0.22, 1, 0.36, 1);
}

.step-node::before {
  content: "";
  display: block;
  height: 2px;
  background: var(--plan);
}

.step-node.type-execute::before { background: var(--execute); }
.step-node.type-validate::before { background: var(--validate); }
.step-node.type-decide::before { background: var(--decide); }

.step-node:hover,
.step-node.selected {
  border-color: var(--line-strong);
  background: var(--surface-raised);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
}

.step-node:has(.step-hit-area:focus-visible) {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.step-node.selected {
  outline: 1px solid var(--focus);
  outline-offset: 3px;
}

.step-hit-area {
  position: absolute;
  z-index: 2;
  inset: 0;
  width: 100%;
  border: 0;
  background: transparent;
  cursor: pointer;
}

.step-header,
.step-node > h3,
.step-layer,
.data-flow,
.contract-summary,
.step-metrics {
  position: relative;
  z-index: 1;
}

.step-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 15px 18px 0;
}

.step-type {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--plan);
  font-size: 10px;
  font-weight: 700;
}

.type-execute .step-type { color: var(--execute); }
.type-validate .step-type { color: var(--validate); }
.type-decide .step-type { color: var(--decide); }

.step-node > h3 {
  padding: 12px 18px 16px;
  font-size: 17px;
  line-height: 1.35;
  text-wrap: balance;
}

.step-layer {
  display: grid;
  grid-template-columns: 84px minmax(0, 1fr);
  gap: 4px 10px;
  padding: 12px 18px;
  border-top: 1px solid var(--line);
}

.step-layer > span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--plan);
  font-size: 11px;
  font-weight: 700;
}

.process-layer > span {
  color: var(--execute);
}

.step-layer p {
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.65;
  text-wrap: pretty;
}

.step-layer small {
  grid-column: 2;
  color: var(--muted);
  font-size: 9px;
}

.data-flow {
  display: grid;
  grid-template-columns: 1fr 20px 1fr;
  align-items: stretch;
  gap: 8px;
  padding: 12px 18px;
  border-top: 1px solid var(--line);
  background: oklch(0.16 0.014 255 / 0.45);
}

.data-flow > div {
  min-width: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}

.data-flow > svg {
  align-self: center;
  color: var(--line-strong);
  transform: rotate(-90deg);
}

.data-flow span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--execute);
  font-size: 10px;
}

.data-flow b {
  max-width: 210px;
  overflow: hidden;
  padding: 3px 6px;
  border: 1px solid var(--line);
  border-radius: 5px;
  color: var(--ink-soft);
  font-size: 9px;
  font-weight: 500;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.contract-summary {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 7px;
  padding: 11px 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 9px;
}

.contract-summary strong {
  margin-right: 3px;
  color: var(--ink-soft);
  font-size: 10px;
}

.contract-summary span + span::before {
  content: "·";
  margin-right: 7px;
  color: var(--line-strong);
}

.step-metrics {
  min-height: 34px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 9px;
}

.evidence-cue {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
  color: var(--ink-soft);
}

.parallel-frame {
  width: min(1040px, 100%);
  margin: 0 auto;
  padding: 14px;
  border: 1px dashed var(--line-strong);
  border-radius: 14px;
  background: oklch(0.16 0.014 255 / 0.78);
}

.parallel-heading {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 2px 3px 12px;
  color: var(--execute);
  font-size: 11px;
}

.parallel-lanes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 12px;
}

.parallel-lanes .step-node {
  width: 100%;
  height: 100%;
}

.parallel-badge {
  position: absolute;
  z-index: 3;
  top: 49px;
  right: 18px;
  color: var(--execute);
  font-family: "SFMono-Regular", Consolas, monospace;
  font-size: 9px;
}

.loop-ribbon {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 9px 18px;
  border-top: 1px solid var(--loop-line);
  background: var(--loop-surface);
  color: var(--loop);
  font-size: 10px;
  font-weight: 700;
}

.projection-note {
  width: min(680px, 100%);
  margin: 12px auto 0;
  color: var(--muted);
  font-size: 10px;
  text-align: center;
}

.evidence-panel {
  position: sticky;
  top: 68px;
  width: min(520px, 42vw);
  height: calc(100dvh - 68px);
  flex: none;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  border-left: 1px solid var(--line);
  background: var(--surface);
  box-shadow: -24px 0 70px oklch(0.05 0.01 255 / 0.32);
}

.evidence-header {
  min-height: 92px;
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 17px 18px;
  border-bottom: 1px solid var(--line);
}

.evidence-header > div {
  min-width: 0;
  flex: 1;
}

.evidence-header span {
  color: var(--plan);
  font-size: 10px;
}

.evidence-header h2 {
  margin-top: 6px;
  font-size: 15px;
  line-height: 1.4;
}

.evidence-header button {
  width: 44px;
  height: 44px;
  display: grid;
  flex: none;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: transparent;
  cursor: pointer;
}

.evidence-scroll {
  min-height: 0;
  overflow: auto;
  padding: 16px 18px 60px;
}

.evidence-summary {
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface-raised);
}

.evidence-summary > span {
  color: var(--plan);
  font-size: 10px;
}

.evidence-summary > p {
  margin-top: 7px;
  color: var(--ink-soft);
  font-size: 12px;
  line-height: 1.65;
}

.evidence-summary dl {
  margin: 14px 0 0;
}

.evidence-summary dl > div {
  display: grid;
  grid-template-columns: 72px minmax(0, 1fr);
  gap: 8px;
  padding: 5px 0;
  border-top: 1px solid var(--line);
}

.evidence-summary dt {
  color: var(--muted);
  font-size: 9px;
}

.evidence-summary dd {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  color: var(--ink-soft);
  font-size: 9px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.evidence-block,
.artifact-reader {
  margin-top: 13px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--bg);
}

.evidence-block summary,
.artifact-reader header {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 11px 12px;
  color: var(--ink-soft);
  cursor: pointer;
  font-size: 11px;
}

.evidence-block pre,
.artifact-reader pre {
  max-height: 420px;
  margin: 0;
  padding: 12px;
  overflow: auto;
  border-top: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 9px;
  line-height: 1.6;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.artifact-reader button {
  min-height: 44px;
  margin: 0 12px 12px;
  padding: 7px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  background: var(--surface-raised);
  cursor: pointer;
}

.artifact-reader > p {
  padding: 0 12px 12px;
  color: var(--danger);
  font-size: 10px;
}

.evidence-empty,
.empty-state {
  color: var(--muted);
}

.evidence-empty {
  padding: 24px 18px;
}

.empty-state {
  min-height: 100dvh;
  display: grid;
  place-content: center;
  gap: 10px;
  padding: 24px;
  text-align: center;
}

.empty-state h1 {
  color: var(--ink);
  font-size: 22px;
}

.empty-state p {
  max-width: 65ch;
}

.error-banner {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 22px;
  border-bottom: 1px solid var(--error-line);
  background: var(--error-surface);
  color: var(--error-ink);
  font-size: 11px;
}

.error-banner span {
  flex: 1;
}

.error-banner button {
  min-height: 44px;
  border: 0;
  background: transparent;
  color: inherit;
  text-decoration: underline;
  cursor: pointer;
}

.journey-skeleton {
  width: min(900px, calc(100% - 48px));
  display: grid;
  gap: 18px;
  margin: 60px auto;
}

.journey-skeleton span {
  height: 150px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
  animation: skeleton-pulse 1.6s ease-in-out infinite;
}

.is-spinning {
  animation: spin 900ms linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes skeleton-pulse { 50% { background: var(--surface-raised); } }

@media (max-width: 1000px) {
  .app-bar { flex-wrap: wrap; }
  .brand-lockup { flex: 1; }
  .run-picker { order: 3; flex-basis: 100%; }
  .run-picker select { max-width: none; }
  .mission-strip { display: grid; }
  .input-ribbon { max-width: 100%; overflow-x: auto; }
  .zoom-evidence .flow-canvas { display: none; }
  .evidence-panel { width: 100%; border-left: 0; }
}

@media (max-width: 700px) {
  .app-bar { padding: 10px 14px; }
  .brand-lockup span:last-child { display: none; }
  .zoom-switch button { min-width: 48px; }
  .mission-strip { padding: 16px 14px; }
  .mission-copy { align-items: flex-start; }
  .mission-copy h1 { font-size: 15px; }
  .input-ribbon span:nth-last-child(-n + 2) { display: none; }
  .overview-canvas,
  .flow-canvas { width: calc(100% - 28px); padding-top: 28px; }
  .overview-heading,
  .flow-heading { display: grid; gap: 10px; }
  .cycle-line::before { left: 24px; }
  .cycle-line button { grid-template-columns: 48px minmax(0, 1fr); padding-right: 14px; }
  .cycle-index { margin-left: 9px; }
  .cycle-open { display: none; }
  .cycle-copy > p { white-space: normal; }
  .step-layer { grid-template-columns: 1fr; }
  .step-layer small { grid-column: 1; }
  .data-flow { grid-template-columns: 1fr; }
  .data-flow > svg { margin: 0 auto; transform: none; }
  .parallel-lanes { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}