@import url("./tokens.css");

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-padding-top: var(--header-offset);
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--paper);
  background-image: radial-gradient(var(--grid) 1px, transparent 1px);
  background-size: 22px 22px;
  color: var(--ink);
  font-family: var(--font-ui);
  font-weight: 400;
  font-size: var(--text-body);
  line-height: 1.6;
}

img,
svg {
  display: block;
}

a {
  color: var(--ink);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  text-decoration-color: var(--gilt);
}

a:hover {
  color: var(--oxblood);
}

:focus {
  outline: none;
}

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

.skip-link {
  position: absolute;
  left: var(--space-2);
  top: var(--space-2);
  z-index: 20;
  padding: 0.5rem 0.75rem;
  background: var(--iron);
  color: var(--paper);
  text-decoration: none;
  transform: translateY(-200%);
}

.skip-link:focus {
  transform: none;
}

.masthead {
  position: sticky;
  top: 0;
  z-index: 8;
  background: var(--paper);
  border-bottom: 1px solid var(--hair);
}

.masthead-row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-1) var(--space-3);
  max-width: 1180px;
  margin: 0 auto;
  padding: 0.85rem 1.25rem;
}

.wordmark {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--text-wordmark);
  letter-spacing: 0.18em;
  line-height: 1.1;
}

.edition {
  margin: 0;
  color: var(--muted);
  font-size: var(--text-small);
  font-weight: 400;
}

.wrap {
  width: min(72rem, calc(100% - 2.5rem));
  margin: 0 auto;
}

.hero {
  padding: var(--space-5) 0 var(--space-3);
}

.kicker {
  margin: 0 0 var(--space-1);
  color: var(--oxblood);
  font-family: var(--font-mono);
  font-size: var(--text-kicker);
  font-weight: 400;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero h1,
.section-head h2,
.panel-head h2,
.coverage-title {
  margin: 0 0 var(--space-2);
  font-family: var(--font-ui);
  font-weight: 800;
  line-height: 1.15;
}

.hero h1 {
  font-size: var(--text-title);
  max-width: 22ch;
}

.lede {
  max-width: var(--measure);
  margin: 0;
  color: var(--muted);
}

.coverage {
  margin: 0 auto var(--space-4);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--hair);
  background: var(--parchment);
}

.coverage-title {
  font-size: 1.05rem;
}

.coverage p {
  max-width: 72ch;
  margin: 0;
}

.coverage strong {
  font-weight: 800;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-4);
  padding-bottom: var(--space-5);
}

.section-head {
  display: flex;
  flex-wrap: wrap;
  align-items: end;
  justify-content: space-between;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.section-head p {
  margin: 0;
  color: var(--dim);
  font-size: var(--text-small);
}

.map-shell {
  position: relative;
  border: 1px solid var(--hair);
  background: var(--paper);
  padding: var(--space-2);
}

.flow {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  grid-template-areas:
    "n01"
    "n02"
    "n03"
    "n04"
    "n05"
    "n06"
    "n07"
    "n08"
    "n09"
    "n10";
  gap: var(--space-2);
  min-height: 0;
  padding: 0.5rem 0.25rem;
}

.flow-nodes {
  display: contents;
}

.flow-edges {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  overflow: visible;
}

.node {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 2.15rem minmax(0, 1fr);
  min-height: 44px;
  width: 100%;
  padding: 0;
  border: 1px solid var(--ink);
  background: var(--paper);
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
}

.node:hover {
  background: var(--parchment);
}

.node[aria-current="step"] {
  background: var(--parchment);
  box-shadow: inset 0 -2px 0 var(--gilt);
}

.node-num {
  display: flex;
  align-items: center;
  justify-content: center;
  border-right: 1px solid var(--hair);
  color: var(--oxblood);
  font-family: var(--font-mono);
  font-weight: 400;
  font-variant-numeric: tabular-nums;
}

.node-body {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.2rem;
  min-width: 0;
  padding: 0.65rem 0.7rem;
}

.node-title {
  font-weight: 800;
  font-size: 0.92rem;
  line-height: 1.25;
}

.node-meta {
  color: var(--muted);
  font-size: 0.75rem;
}

.node-chip,
.node-badge {
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 0.7rem;
}

.node-chip {
  align-self: flex-start;
  margin-top: 0.15rem;
  padding: 0.1rem 0.35rem;
  border: 1px solid var(--hair);
  color: var(--muted);
}

.node-badge {
  color: var(--dim);
  text-transform: lowercase;
}

.node-01 { grid-area: n01; }
.node-02 { grid-area: n02; }
.node-03 { grid-area: n03; }
.node-04 { grid-area: n04; }
.node-05 { grid-area: n05; }
.node-06 { grid-area: n06; }
.node-07 { grid-area: n07; }
.node-08 { grid-area: n08; }
.node-09 { grid-area: n09; }
.node-10 { grid-area: n10; }

.kbd-hint {
  margin: var(--space-2) 0 0;
  color: var(--dim);
  font-size: var(--text-small);
}

.kbd-hint kbd {
  padding: 0.05rem 0.3rem;
  border: 1px solid var(--hair);
  background: var(--iron);
  color: var(--inverse-mute);
  font-family: var(--font-mono);
  font-size: 0.75rem;
}

.out-of-scope {
  margin: var(--space-3) 0 0;
  padding-top: var(--space-2);
  border-top: 1px solid var(--hair);
  color: var(--muted);
  font-size: var(--text-small);
}

.detail {
  border: 1px solid var(--hair);
  background: var(--paper);
  padding: var(--space-3);
}

.panel-head {
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--hair);
}

.panel-kicker {
  margin: 0 0 0.35rem;
  color: var(--oxblood);
  font-size: var(--text-kicker);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.where {
  margin: 0;
  color: var(--dim);
  font-size: var(--text-small);
}

.panel {
  display: none;
}

.panel.is-active:not([hidden]) {
  display: block;
}

.panel h3 {
  margin: var(--space-3) 0 var(--space-1);
  font-family: var(--font-ui);
  font-size: 0.8rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.panel h3::after {
  content: "";
  display: block;
  width: 2rem;
  height: 1px;
  margin-top: 0.35rem;
  background: var(--oxblood);
}

.panel .thesis,
.panel .evidence-label {
  margin: 0;
}

.panel .evidence-label {
  margin-top: var(--space-2);
  color: var(--oxblood);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.panel ul {
  margin: 0;
  padding-left: 1.1rem;
}

.panel li + li {
  margin-top: 0.4rem;
}

.mono {
  font-family: var(--font-mono);
  font-size: var(--text-mono);
}

.panel-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-top: var(--space-3);
  padding-top: var(--space-2);
  border-top: 1px solid var(--hair);
}

.panel-nav button {
  min-height: 44px;
  padding: 0.4rem 0.8rem;
  border: 1px solid var(--ink);
  background: var(--paper);
  color: var(--ink);
  font: inherit;
  font-weight: 800;
  font-size: 0.85rem;
  cursor: pointer;
}

.panel-nav button:hover:not(:disabled) {
  background: var(--parchment);
}

.panel-nav button:disabled {
  border-color: var(--hair);
  color: var(--dim);
  cursor: not-allowed;
}

.site-foot {
  border-top: 1px solid var(--hair);
  padding: var(--space-3) 0 var(--space-5);
  color: var(--dim);
  font-size: var(--text-small);
}

.site-foot p {
  max-width: var(--measure);
  margin: 0 0 0.6rem;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (min-width: 960px) {
  .flow {
    grid-template-columns: repeat(5, minmax(0, 1fr));
    grid-template-areas:
      "n01 n02 n03 n04 n05"
      "n06 n07 n08 n09 n10";
    gap: var(--space-3) var(--space-2);
    min-height: 22rem;
    padding: 0.75rem 0.5rem 1rem;
  }

  .node {
    min-height: 8.5rem;
  }

  .detail {
    position: sticky;
    top: calc(var(--header-offset) + var(--space-2));
  }
}

@media (max-width: 640px) {
  .wrap {
    width: calc(100% - 2rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}