/* EIM-1.0 — Execution Integrity Model Reference Specification (FROZEN) */

.ea-section {
  position: relative;
  background: #ffffff;
  padding: 120px 0;
  border-top: 1px solid #e2e8f0;
  border-bottom: 1px solid #e2e8f0;
}

.ea-architecture-plate {
  position: relative;
  max-width: 56rem;
  margin: 0 auto;
  padding: 64px 60px 48px;
  border: 1px solid #e3e9f2;
  border-radius: 24px;
  background-color: #fbfcfe;
  background-image:
    radial-gradient(rgba(15, 23, 42, 0.08) 1px, transparent 1px),
    radial-gradient(circle at center, #ffffff 0%, #fbfcfe 65%, #f3f6fa 100%);
  background-size: 16px 16px, auto;
  background-position: 0 0, center;
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.8),
    0 20px 60px rgba(15, 23, 42, 0.03);
  overflow: hidden;
}

.ea-architecture-plate > * {
  position: relative;
  z-index: 1;
}

/* —— Execution axis: confined to model (below header/title) —— */
.ea-execution-axis {
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  z-index: 0;
  width: 0;
  transform: translateX(-50%);
  pointer-events: none;
}

.ea-plate-spine {
  position: absolute;
  left: 50%;
  top: 1.85rem;
  bottom: 0.35rem;
  width: 0;
  border-left: 1px solid rgba(148, 163, 184, 0.25);
  transform: translateX(-50%);
}

.ea-flow-label {
  position: absolute;
  left: 50%;
  top: 0.35rem;
  z-index: 1;
  transform: translateX(-50%);
  padding: 0.1rem 0.35rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.56rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #94a3b8;
  white-space: nowrap;
  background: rgba(251, 252, 254, 0.94);
}

/* —— Spec header —— */
.spec-header-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin: 0 0 1.75rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid #e3e9f2;
}

.spec-header-left {
  display: grid;
  gap: 0.22rem;
}

.doc-vendor {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: #0f172a;
}

.doc-class {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #1e293b;
}

.doc-subtitle {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.64rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #64748b;
}

.spec-header-right {
  display: flex;
  align-items: flex-start;
}

.doc-id-box {
  display: grid;
  gap: 0.28rem;
  justify-items: end;
  min-width: 9.5rem;
  padding: 0.55rem 0.7rem;
  border: 1px solid #e3e9f2;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.82);
  text-align: right;
}

.doc-meta-strip {
  display: grid;
  gap: 0.12rem;
  margin-top: 0.2rem;
  padding-top: 0.4rem;
  border-top: 1px solid #e3e9f2;
}

.doc-meta-strip span {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.52rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #94a3b8;
}

.id-label {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.56rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #94a3b8;
}

.id-code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: #0f172a;
}

.canonical-dna-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem 0.45rem;
  margin: 0 0 1.5rem;
  padding: 0.7rem 0.85rem;
  border: 1px solid #e3e9f2;
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.72);
}

.dna-label {
  margin-right: 0.25rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #94a3b8;
}

.dna-formula {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  color: #1e293b;
}

.ea-section h2 {
  margin: 0;
  max-width: 42rem;
  font-family: Inter, system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 500;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: #0f172a;
}

.ea-subtitle {
  margin: 0.9rem 0 0;
  max-width: 44rem;
  font-size: 1.02rem;
  line-height: 1.65;
  color: #475569;
}

/* —— Model —— */
.ea-ref-model {
  position: relative;
  display: grid;
  gap: 0;
  margin: 2.75rem auto 0;
  max-width: 52rem;
  width: 100%;
}

.ea-ref-model > *:not(.ea-execution-axis) {
  position: relative;
  z-index: 1;
}

.plate-iso-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.55rem 1.25rem;
  margin: 2.25rem 0 0;
  padding-top: 1.15rem;
  border-top: 1px solid #e3e9f2;
}

.iso-left,
.iso-right {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.58rem;
  font-weight: 650;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #94a3b8;
}

.iso-right {
  color: #64748b;
}

.spec-download-dock {
  display: flex;
  justify-content: center;
  margin: 1.35rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid #e3e9f2;
}

.spec-pdf-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0.7rem 1.1rem;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  background: #ffffff;
  color: #0f172a;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.spec-pdf-btn:hover {
  border-color: #94a3b8;
  background: #f8fafc;
}

.spec-pdf-btn:focus-visible {
  outline: 2px solid #0f172a;
  outline-offset: 2px;
}

.ea-slab {
  position: relative;
  z-index: 1;
  padding: 1.2rem 1rem 1.25rem;
  border-radius: 10px;
}

.ea-slab--business {
  background: #fafcfe;
  border: 1px solid #e2e8f0;
}

.ea-slab--integrity {
  background: linear-gradient(180deg, #f0f6fc 0%, #e9f3fb 100%);
  border: 1.5px solid #7dd3fc;
}

.ea-slab--execution {
  background: #ffffff;
  border: 1px solid #e2e8f0;
}

.ea-slab-head {
  display: grid;
  gap: 0.25rem;
  margin-bottom: 0.9rem;
  justify-items: center;
  text-align: center;
}

.ea-slab-title {
  margin: 0;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #0f172a;
}

.ea-slab-sub {
  margin: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.68rem;
  font-weight: 650;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #64748b;
}

.layer-purpose {
  margin: 0.1rem 0 0;
  font-size: 0.86rem;
  font-weight: 450;
  line-height: 1.4;
  letter-spacing: 0;
  text-transform: none;
  color: #64748b;
}

.ea-axis-stack {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.45rem;
}

.ea-axis-stack--compact {
  gap: 0.36rem;
}

.ea-axis-arrow {
  color: #94a3b8;
  font-size: 0.85rem;
  line-height: 1;
}

.ea-chip {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.35rem;
  padding: 0.5rem 0.95rem;
  border: 1px solid #cbd5e1;
  border-radius: 10px;
  background: #ffffff;
}

.ea-chip--axis {
  min-width: 12.5rem;
}

.ea-chip span {
  font-size: 0.7rem;
  font-weight: 650;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #0f172a;
  text-align: center;
}

.ea-chip--core {
  border-color: #94a3b8;
}

.ea-chip--approved {
  border: 2.5px solid #0f172a;
  background: #f1f5f9;
}

.ea-chip--approved span {
  font-weight: 700;
  color: #0f172a;
}

.ea-chip--blocked {
  min-width: 9.5rem;
  min-height: 2.1rem;
  border: 1px dashed #cbd5e1;
  background: #f8fafc;
}

.ea-chip--blocked span {
  font-weight: 550;
  color: #94a3b8;
}

.ea-chip--destination {
  border: 2px solid #0f766e;
  background: #ecfdf5;
  box-shadow: 0 4px 14px rgba(15, 118, 110, 0.15);
}

.ea-chip--destination span {
  font-weight: 700;
  color: #047857;
}

.ea-chip--muted {
  border-color: #e2e8f0;
  background: #f8fafc;
  opacity: 0.72;
}

.ea-chip--muted span {
  color: #64748b;
  font-weight: 600;
}

.ea-boundary {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.7rem;
  padding: 0.7rem 0;
}

.ea-boundary-line {
  height: 0;
  border-top: 1px dashed #94a3b8;
}

.ea-boundary-text {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.56rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #475569;
  white-space: nowrap;
  background: rgba(251, 252, 254, 0.92);
  padding: 0 0.35rem;
}

.ea-integrity-main {
  min-width: 0;
  display: grid;
  justify-items: center;
}

.ea-authorize-junction {
  position: relative;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  width: min(100%, 42rem);
  column-gap: 0;
}

.ea-authorize-junction > .ea-chip {
  grid-column: 2;
  justify-self: center;
}

.ea-schematic-branch {
  grid-column: 3;
  position: static;
  display: flex;
  align-items: center;
  gap: 0;
  justify-self: start;
  transform: none;
  margin-left: 0;
}

.ea-branch-rail {
  display: block;
  width: 2.75rem;
  height: 0;
  border-top: 1.5px solid #64748b;
  flex-shrink: 0;
}

.ea-branch-arrow {
  margin-right: 0.35rem;
  font-size: 0.62rem;
  line-height: 1;
  color: #64748b;
  flex-shrink: 0;
}

.ea-gate-axis {
  position: relative;
  display: flex;
  justify-content: center;
  width: min(100%, 36rem);
}

.ea-blocked-off {
  position: absolute;
  left: calc(50% + 6.5rem);
  top: 50%;
  display: grid;
  gap: 0.22rem;
  justify-items: start;
  transform: translateY(-50%);
}

.ea-blocked-desc {
  font-size: 0.7rem;
  line-height: 1.3;
  color: #94a3b8;
  max-width: 9.5rem;
}

.ea-eval-row {
  display: grid;
  gap: 0.45rem;
  justify-items: center;
  width: 100%;
}

.ea-eval-kicker,
.ea-outcome-kicker {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #64748b;
}

.ea-evidence-byproduct {
  display: grid;
  align-content: start;
  max-width: 12.5rem;
  padding: 0.65rem 0.7rem;
  border: 1px solid #94a3b8;
  border-radius: 8px;
  background: #ffffff;
}

.ea-evidence-title {
  margin: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  line-height: 1.35;
  color: #334155;
}

.ea-evidence-mark {
  margin-right: 0.25rem;
  color: #64748b;
}

.ea-evidence-note {
  margin: 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.56rem;
  font-weight: 550;
  letter-spacing: 0.04em;
  color: #94a3b8;
}

.ea-outcome-outside {
  display: grid;
  gap: 0.35rem;
  justify-items: center;
}

.ea-outcome-kicker {
  max-width: 16rem;
  text-align: center;
  line-height: 1.35;
  font-size: 0.56rem;
}

@media (max-width: 820px) {
  .ea-schematic-branch,
  .ea-blocked-off {
    position: static;
    transform: none;
    margin-top: 0.55rem;
    justify-content: center;
    justify-items: center;
    text-align: center;
  }

  .ea-authorize-junction {
    grid-template-columns: 1fr;
    justify-items: center;
    row-gap: 0.55rem;
  }

  .ea-authorize-junction > .ea-chip,
  .ea-schematic-branch {
    grid-column: 1;
  }

  .ea-schematic-branch {
    flex-direction: column;
  }

  .ea-gate-axis {
    flex-direction: column;
    align-items: center;
  }

  .ea-branch-rail {
    width: 0;
    height: 1.1rem;
    border-top: 0;
    border-left: 1.5px solid #64748b;
  }

  .ea-branch-arrow {
    margin: 0.15rem 0;
    transform: rotate(90deg);
  }

  .ea-execution-axis {
    display: none;
  }
}

@media (max-width: 720px) {
  .ea-boundary {
    grid-template-columns: 1fr;
    justify-items: center;
    gap: 0.35rem;
  }

  .ea-boundary-line {
    width: 100%;
  }
}

@media (max-width: 860px) {
  .ea-section {
    padding: 72px 0;
  }

  .ea-architecture-plate {
    padding: 40px 24px 32px;
    border-radius: 20px;
  }

  .doc-id-box {
    justify-items: start;
    text-align: left;
  }

  .ea-ref-model {
    margin-top: 2.25rem;
  }
}