/* Atlas Source Authority v2: interactive evidence chain over static docs truth. */

body[data-atlas-source-authority] {
  --source-cyan: var(--docs-v3-cyan, #42d9e8);
  --source-green: var(--docs-v3-green, #26d39a);
  --source-gold: var(--docs-v3-gold, #f0c75e);
  --source-line: var(--docs-v3-line, rgba(97, 220, 235, .24));
  --source-panel: var(--docs-v3-panel, #071b2a);
  --source-panel-strong: var(--docs-v3-panel-strong, #0a2435);
  --source-text: var(--docs-v3-text, #f3fbff);
  --source-muted: var(--docs-v3-muted, #9db5c5);
}

body[data-atlas-source-authority] .docs-hero {
  grid-template-areas:
    "copy circuit"
    "facts facts";
  grid-template-columns: minmax(0, 1.02fr) minmax(430px, .98fr) !important;
  align-items: stretch !important;
}

body[data-atlas-source-authority] .atlas-source-copy {
  grid-area: copy;
  align-self: center;
  min-width: 0;
}

body[data-atlas-source-authority] .atlas-source-circuit { grid-area: circuit; }
body[data-atlas-source-authority] .hero-strip { grid-area: facts; }

.atlas-source-circuit {
  --source-stage-progress: .34;
  position: relative;
  min-width: 0;
  min-height: 450px;
  display: grid;
  grid-template-rows: auto 1fr auto;
  gap: 16px;
  padding: 18px;
  overflow: hidden;
  border: 1px solid var(--source-line);
  border-radius: 8px;
  background:
    linear-gradient(rgba(66, 217, 232, .04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(66, 217, 232, .04) 1px, transparent 1px),
    linear-gradient(145deg, color-mix(in srgb, var(--source-cyan) 8%, transparent), transparent 58%),
    var(--source-panel);
  background-size: 24px 24px, 24px 24px, auto, auto;
  box-shadow: 0 28px 72px rgba(0, 0, 0, .22);
}

.atlas-source-circuit::before {
  content: "";
  position: absolute;
  inset: auto 18px 0;
  height: 3px;
  pointer-events: none;
  background: linear-gradient(90deg, var(--source-cyan), var(--source-green), var(--source-gold));
  transform: scaleX(var(--source-stage-progress));
  transform-origin: left;
  transition: transform 280ms cubic-bezier(.16, 1, .3, 1);
}

.atlas-source-circuit__head,
.atlas-source-circuit__status {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.atlas-source-circuit__head { padding-bottom: 14px; border-bottom: 1px solid var(--source-line); }
.atlas-source-circuit__status { padding-top: 14px; border-top: 1px solid var(--source-line); }

.atlas-source-circuit__head span,
.atlas-source-circuit__head strong,
.atlas-source-circuit__status span,
.atlas-source-circuit__status strong {
  font: 900 .65rem/1.25 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0;
  text-transform: uppercase;
}

.atlas-source-circuit__head span,
.atlas-source-circuit__status span { color: var(--source-muted); }
.atlas-source-circuit__head strong { color: var(--source-cyan); }
.atlas-source-circuit__status strong { color: var(--source-green); text-align: right; }

.atlas-source-circuit__body {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 154px minmax(0, 1fr);
  gap: 18px;
  align-items: stretch;
}

.atlas-source-circuit__rail {
  position: relative;
  display: grid;
  align-content: center;
  gap: 8px;
}

.atlas-source-circuit__rail::before {
  content: "";
  position: absolute;
  top: 22%;
  bottom: 22%;
  left: 21px;
  width: 1px;
  background: linear-gradient(var(--source-cyan), var(--source-green), var(--source-gold));
}

.atlas-source-node {
  position: relative;
  z-index: 1;
  width: 100%;
  min-height: 72px;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 9px;
  align-items: center;
  padding: 11px;
  border: 1px solid var(--source-line);
  border-radius: 7px;
  background: color-mix(in srgb, var(--source-panel-strong) 92%, transparent);
  color: var(--source-text);
  text-align: left;
  cursor: pointer;
  transition: transform 100ms ease, border-color 180ms ease, background 180ms ease, box-shadow 180ms ease;
}

.atlas-source-node > span {
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 1px solid var(--source-line);
  border-radius: 50%;
  color: var(--source-cyan);
  font: 900 .6rem/1 ui-monospace, SFMono-Regular, Menlo, monospace;
}

.atlas-source-node strong,
.atlas-source-node small { display: block; letter-spacing: 0; }
.atlas-source-node strong { font-size: .75rem; }
.atlas-source-node small { margin-top: 4px; color: var(--source-muted); font: 800 .55rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; text-transform: uppercase; }
.atlas-source-node:active { transform: scale(.975); }
.atlas-source-node:focus-visible { outline: 2px solid var(--source-cyan); outline-offset: 2px; }
.atlas-source-node[data-source-active="true"] {
  border-color: var(--source-cyan);
  background: color-mix(in srgb, var(--source-cyan) 12%, var(--source-panel-strong));
  box-shadow: inset 3px 0 var(--source-cyan);
}
.atlas-source-node[data-source-complete="true"] > span { border-color: var(--source-green); color: var(--source-green); }
.atlas-source-node[data-source-kind="gap"][data-source-active="true"] { border-color: var(--source-gold); box-shadow: inset 3px 0 var(--source-gold); }

.atlas-source-focus {
  position: relative;
  min-width: 0;
  display: grid;
  grid-template-rows: auto 1fr auto;
  padding: 18px;
  overflow: hidden;
  border: 1px solid var(--source-line);
  border-radius: 7px;
  background: color-mix(in srgb, var(--source-panel-strong) 90%, transparent);
}

.atlas-source-focus::after {
  content: "";
  position: absolute;
  width: 190px;
  aspect-ratio: 1;
  right: -72px;
  bottom: -74px;
  border: 1px solid var(--source-line);
  border-radius: 50%;
  box-shadow: inset 0 0 0 28px color-mix(in srgb, var(--source-panel) 58%, transparent), inset 0 0 0 29px var(--source-line);
}

.atlas-source-focus > * { position: relative; z-index: 1; }
.atlas-source-focus__eyebrow { margin: 0; color: var(--source-cyan); font: 900 .62rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace; text-transform: uppercase; }
.atlas-source-focus h2 { align-self: center; margin: 14px 0 8px; color: var(--source-text); font-size: clamp(1.55rem, 3vw, 2.35rem); line-height: 1; letter-spacing: 0; }
.atlas-source-focus__copy { max-width: 520px; margin: 0; color: var(--source-muted); font-size: .88rem; line-height: 1.58; }
.atlas-source-focus__meta { align-self: end; margin: 18px 0 0; color: var(--source-green); font: 900 .6rem/1.3 ui-monospace, SFMono-Regular, Menlo, monospace; text-transform: uppercase; }

body[data-atlas-source-authority] .docs-section:nth-of-type(1) { padding-top: 42px; }
body[data-atlas-source-authority] .docs-section h2::before {
  content: "SOURCE AUTHORITY";
  display: block;
  margin-bottom: 9px;
  color: var(--source-cyan);
  font: 900 .62rem/1.2 ui-monospace, SFMono-Regular, Menlo, monospace;
  letter-spacing: 0;
}

body[data-atlas-source-authority] .docs-section .doc-card {
  position: relative;
  min-height: 178px;
  overflow: hidden;
  border-color: var(--source-line);
  border-radius: 8px;
  background: linear-gradient(145deg, color-mix(in srgb, var(--source-cyan) 8%, transparent), transparent 58%), var(--source-panel);
  box-shadow: none;
}

body[data-atlas-source-authority] .docs-section .doc-card:nth-child(3) { border-left: 3px solid var(--source-gold); }
body[data-atlas-source-authority] .docs-section .doc-card span { color: var(--source-cyan); letter-spacing: 0; }
body[data-atlas-source-authority] .docs-section .doc-card h3 { color: var(--source-text); }
body[data-atlas-source-authority] .docs-section .doc-card p { color: var(--source-muted); }

@media (max-width: 900px) {
  body[data-atlas-source-authority] .docs-hero {
    grid-template-areas: "copy" "circuit" "facts";
    grid-template-columns: minmax(0, 1fr) !important;
  }
}

@media (max-width: 620px) {
  .atlas-source-circuit { min-height: 430px; padding: 13px; }
  .atlas-source-circuit__body { grid-template-columns: minmax(0, 1fr); }
  .atlas-source-circuit__rail {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    align-content: stretch;
  }
  .atlas-source-circuit__rail::before {
    top: 20px;
    right: 16%;
    bottom: auto;
    left: 16%;
    width: auto;
    height: 1px;
  }
  .atlas-source-node {
    min-height: 68px;
    grid-template-columns: minmax(0, 1fr);
    justify-items: center;
    padding: 9px 6px;
    text-align: center;
  }
  .atlas-source-node small { display: none; }
  .atlas-source-node[data-source-active="true"],
  .atlas-source-node[data-source-kind="gap"][data-source-active="true"] { box-shadow: inset 0 -3px var(--source-cyan); }
  .atlas-source-focus { min-height: 206px; padding: 16px; }
  .atlas-source-focus h2 { font-size: 1.65rem; }
  .atlas-source-focus__copy { font-size: .82rem; }
  body[data-atlas-source-authority] .docs-section .docs-card-grid {
    display: flex;
    gap: 9px;
    overflow-x: auto;
    scroll-snap-type: x proximity;
  }
  body[data-atlas-source-authority] .docs-section .doc-card {
    flex: 0 0 min(82vw, 300px);
    scroll-snap-align: start;
  }
}

@media (min-width: 1800px) {
  body[data-atlas-source-authority] .docs-shell { width: min(2320px, calc(100% - 256px)) !important; max-width: 2320px !important; }
  body[data-atlas-source-authority] .docs-hero { grid-template-columns: minmax(0, 1.08fr) minmax(680px, .92fr) !important; gap: 96px; }
  .atlas-source-circuit { min-height: 540px; }
  .atlas-source-circuit__body { grid-template-columns: 210px minmax(0, 1fr); }
  .atlas-source-node { min-height: 92px; }
}

@media (prefers-reduced-motion: reduce) {
  .atlas-source-circuit::before,
  .atlas-source-node { transition: none !important; }
}