/*
Purpose: visual and accessibility contract for the public Mullusi Causal Lattice Observatory route.
Governance scope: bounded homepage rendering, semantic fallback, responsive layout, and reduced motion.
Dependencies: assets/styles.css variables and causal-lattice-runtime.js data attributes.
Invariants: the demonstration remains legible without canvas, does not overflow mobile viewports,
and labels itself as an illustrative scenario rather than live runtime evidence.
*/

.causal-lattice-shell {
  position: relative;
  min-height: 420px;
  overflow: hidden;
  border: 1px solid var(--line-bright);
  background:
    radial-gradient(circle at 50% 38%, color-mix(in srgb, var(--accent) 10%, transparent), transparent 54%),
    linear-gradient(180deg, color-mix(in srgb, var(--bg-panel) 92%, transparent), color-mix(in srgb, var(--bg) 86%, transparent));
}

.causal-lattice-demo {
  position: relative;
  min-height: 420px;
  isolation: isolate;
}

.causal-lattice-demo::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    linear-gradient(90deg, transparent 49.8%, color-mix(in srgb, var(--line-bright) 36%, transparent) 50%, transparent 50.2%),
    linear-gradient(180deg, transparent 49.8%, color-mix(in srgb, var(--line-bright) 24%, transparent) 50%, transparent 50.2%);
  opacity: 0.45;
}

.causal-lattice-demo canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
  width: 100%;
  height: 100%;
}

.causal-lattice-hud {
  position: absolute;
  inset: 16px 16px auto 16px;
  z-index: 3;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  pointer-events: none;
}

.causal-lattice-boundary {
  grid-column: 1 / -1;
  justify-self: start;
  padding: 5px 8px;
  border: 1px solid color-mix(in srgb, var(--accent-warm) 46%, var(--line));
  background: color-mix(in srgb, var(--bg-panel) 88%, transparent);
  color: var(--accent-warm);
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.12em;
  line-height: 1.4;
  text-transform: uppercase;
}

.causal-lattice-stage {
  min-width: 0;
  max-width: 310px;
}

.causal-lattice-stage span {
  display: block;
  margin-bottom: 2px;
  color: var(--ink-dim);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.causal-lattice-stage strong {
  display: block;
  color: var(--ink);
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 650;
  line-height: 1.35;
}

.causal-lattice-replay {
  align-self: start;
  padding: 7px 10px;
  border: 1px solid var(--line-bright);
  background: color-mix(in srgb, var(--bg-panel) 82%, transparent);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  pointer-events: auto;
  text-transform: uppercase;
}

.causal-lattice-replay:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.causal-lattice-legend {
  position: absolute;
  inset: auto 14px 14px 14px;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;
  list-style: none;
  pointer-events: none;
}

.causal-lattice-legend li {
  display: flex;
  min-width: 0;
  align-items: center;
  gap: 6px;
  padding: 6px 7px;
  border: 1px solid color-mix(in srgb, var(--line-bright) 72%, transparent);
  background: color-mix(in srgb, var(--bg-panel) 82%, transparent);
  color: var(--ink-dim);
  font-family: var(--mono);
  font-size: 9px;
  line-height: 1.2;
}

.causal-lattice-legend span {
  display: inline-grid;
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--accent) 55%, var(--line));
  color: var(--accent);
  font-family: var(--symbols);
  font-size: 10px;
}

.causal-lattice-fallback {
  position: relative;
  z-index: 2;
  display: grid;
  min-height: 420px;
  align-content: center;
  gap: 18px;
  padding: 72px 22px 74px;
}

.causal-lattice-fallback[hidden] {
  display: none;
}

.causal-lattice-demo[data-phase="conflict-detected"] .causal-lattice-boundary,
.causal-lattice-demo[data-phase="approval-required"] .causal-lattice-boundary {
  border-color: color-mix(in srgb, var(--danger) 62%, var(--line));
  color: var(--danger);
}

.causal-lattice-demo[data-phase="state-settled"] .causal-lattice-boundary,
.causal-lattice-demo[data-phase="receipt-committed"] .causal-lattice-boundary {
  border-color: color-mix(in srgb, var(--accent) 62%, var(--line));
  color: var(--accent);
}

.causal-lattice-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

@media (max-width: 900px) {
  .causal-lattice-shell,
  .causal-lattice-demo,
  .causal-lattice-fallback {
    min-height: 390px;
  }

  .causal-lattice-legend {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .causal-lattice-legend li:nth-child(4),
  .causal-lattice-legend li:nth-child(5) {
    grid-column: span 1;
  }
}

@media (max-width: 620px) {
  .causal-lattice-shell,
  .causal-lattice-demo,
  .causal-lattice-fallback {
    min-height: 350px;
  }

  .causal-lattice-hud {
    inset: 12px 12px auto;
  }

  .causal-lattice-boundary {
    font-size: 8px;
  }

  .causal-lattice-stage strong {
    font-size: 11px;
  }

  .causal-lattice-legend {
    inset: auto 10px 10px;
    grid-template-columns: repeat(5, 1fr);
    gap: 3px;
  }

  .causal-lattice-legend li {
    justify-content: center;
    padding: 5px 3px;
    font-size: 0;
  }

  .causal-lattice-legend span {
    width: 20px;
    height: 20px;
    font-size: 10px;
  }

  .causal-lattice-replay {
    padding: 6px 8px;
    font-size: 9px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .causal-lattice-replay {
    display: none;
  }

  .causal-lattice-demo canvas {
    transition: none;
  }
}

.observatory-hero {
  padding-top: 68px;
}

.observatory-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, .78fr) minmax(560px, 1.22fr);
  align-items: center;
  gap: 54px;
}

.observatory-intro h1 {
  max-width: 11ch;
  margin: 18px 0 22px;
  font-size: 72px;
  line-height: .98;
  letter-spacing: 0;
}

.observatory-lead {
  max-width: 58ch;
  font-size: 17px;
  line-height: 1.72;
}

.observatory-boundary {
  display: grid;
  gap: 4px;
  margin-top: 24px;
  padding: 14px 16px;
  border: 1px solid color-mix(in srgb, var(--accent-warm) 48%, var(--line));
  background: color-mix(in srgb, var(--bg-panel) 82%, transparent);
}

.observatory-boundary strong {
  color: var(--accent-warm);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.observatory-boundary span {
  color: var(--ink-soft);
  font-size: 13px;
}

.observatory-summary {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 18px;
}

.observatory-summary div,
.observatory-detail-readout div {
  padding: 12px 13px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-panel) 72%, transparent);
}

.observatory-summary span,
.observatory-detail-readout dt {
  display: block;
  color: var(--ink-dim);
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.observatory-summary strong,
.observatory-detail-readout dd {
  display: block;
  margin-top: 5px;
  color: var(--ink);
  font-size: 12px;
  line-height: 1.45;
}

.observatory-machine {
  min-width: 0;
}

.observatory-controls {
  margin-top: 12px;
  padding: 12px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-panel) 80%, transparent);
}

.observatory-control-row {
  display: grid;
  grid-template-columns: auto auto auto minmax(120px, 1fr);
  align-items: center;
  gap: 8px;
}

.observatory-controls button {
  min-height: 36px;
  padding: 7px 11px;
  border: 1px solid var(--line-bright);
  background: var(--bg-raise);
  color: var(--ink-soft);
  font-family: var(--mono);
  font-size: 10px;
  letter-spacing: .06em;
}

.observatory-controls button:hover,
.observatory-controls button.is-active,
.observatory-controls button[aria-pressed="true"] {
  border-color: var(--accent);
  color: var(--accent);
}

.observatory-control-row progress {
  width: 100%;
  height: 8px;
  accent-color: var(--accent);
}

.observatory-stage-list {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 5px;
  margin-top: 9px;
  padding: 0;
  list-style: none;
}

.observatory-stage-list button {
  width: 100%;
  min-height: 32px;
  padding-inline: 5px;
  font-size: 9px;
}

.observatory-explanation-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(360px, .82fr);
  align-items: start;
  gap: 44px;
}

.observatory-explanation h2 {
  margin: 12px 0 14px;
}

.observatory-detail-readout {
  display: grid;
  gap: 10px;
}

.observatory-detail-readout dd {
  margin-left: 0;
}

.observatory-card-grid,
.observatory-relation-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 12px;
  margin-top: 30px;
}

.observatory-card-grid article,
.observatory-relation-grid article,
.observatory-do-dont article {
  padding: 20px;
  border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg-panel) 76%, transparent);
}

.observatory-card-grid article > span {
  display: inline-grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--accent) 55%, var(--line));
  color: var(--accent);
  font-family: var(--symbols);
}

.observatory-card-grid h3,
.observatory-relation-grid strong {
  display: block;
  margin-top: 14px;
  color: var(--ink);
}

.observatory-card-grid p,
.observatory-relation-grid p {
  margin-top: 8px;
  font-size: 13px;
}

.observatory-relation-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.observatory-relation-grid strong {
  margin-top: 0;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .08em;
  text-transform: uppercase;
}

.observatory-boundary-grid {
  display: grid;
  grid-template-columns: minmax(0, .72fr) minmax(0, 1.28fr);
  gap: 44px;
}

.observatory-do-dont {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.observatory-do-dont ul {
  margin: 14px 0 0;
  padding-left: 18px;
  color: var(--ink-soft);
}

.observatory-do-dont li + li {
  margin-top: 7px;
}

@media (max-width: 1050px) {
  .observatory-intro h1 { font-size: 64px; }
  .observatory-hero-grid {
    grid-template-columns: 1fr;
  }

  .observatory-intro h1 {
    max-width: 14ch;
  }

  .observatory-card-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .observatory-intro h1 { font-size: 52px; }
  .observatory-hero {
    padding-top: 42px;
  }

  .observatory-summary,
  .observatory-explanation-grid,
  .observatory-boundary-grid,
  .observatory-do-dont {
    grid-template-columns: 1fr;
  }

  .observatory-stage-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .observatory-card-grid,
  .observatory-relation-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 520px) {
  .observatory-intro h1 { font-size: 44px; }
  .observatory-control-row {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .observatory-control-row progress {
    grid-column: 1 / -1;
  }

  .observatory-stage-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .observatory-card-grid,
  .observatory-relation-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  [data-causal-lattice-play],
  .causal-lattice-replay {
    display: none;
  }
}