/* =========================================================
   ICCE TRANSACTION EVIDENCE ENGINE
   Grayscale line theme · white background · coloured dots only
   ========================================================= */

.icce-engine {
  --icce-yellow: #eeff41;
  --icce-green: #10b981;
  --icce-ink: #18181b;
  --icce-text: #3f3f46;
  --icce-muted: #71717a;
  --icce-faint: #a1a1aa;
  --icce-line: #d4d4d8;
  --icce-line-soft: #e4e4e7;
  --icce-surface: #fafafa;

  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: 1rem;
  color: var(--icce-ink);
  border: 1px solid var(--icce-line-soft);
  border-radius: 1.5rem;
  background: #fff;
}

/* Retained for compatibility with the existing markup. */
.icce-engine--light {
  color: var(--icce-ink);
  background: #fff;
}

/* No decorative glow, grid or diagonal sheen. */
.icce-engine::before,
.icce-engine::after,
.icce-engine__glow {
  display: none;
}

/* =========================================================
   Header and footer
   ========================================================= */

.icce-engine__topbar,
.icce-engine__footer {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.icce-engine__topbar {
  padding: 0.15rem 0.25rem 0.9rem;
  border-bottom: 1px solid var(--icce-line-soft);
}

.icce-engine__live {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #52525b;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.icce-engine__live-dot {
  width: 0.45rem;
  height: 0.45rem;
  border-radius: 999px;
  background: var(--icce-green);
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.35);
  animation: icce-live 2s ease-out infinite;
}

.icce-engine__transaction {
  color: var(--icce-faint);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.625rem;
  letter-spacing: 0.08em;
}

.icce-engine__footer {
  margin: 0 -1rem -1rem;
  padding: 0.75rem 1rem;
  color: var(--icce-muted);
  border-top: 1px solid var(--icce-line-soft);
  background: #fff;
  font-size: 0.5rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.icce-engine__footer > div {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.icce-engine__footer-dot {
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 999px;
  background: var(--icce-yellow);
  box-shadow: 0 0 7px rgba(238, 255, 65, 0.55);
}

.icce-engine__footer code {
  color: var(--icce-faint);
  font-size: 0.5rem;
}

/* =========================================================
   Main layout
   ========================================================= */

.icce-engine__body {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns:
    minmax(0, 0.82fr)
    minmax(155px, 0.9fr)
    minmax(0, 1.18fr);
  gap: 1.15rem;
  padding: 1.25rem 0;
}

.icce-engine__label {
  margin: 0 0 0.75rem;
  color: var(--icce-faint);
  font-size: 0.5625rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* =========================================================
   Transaction inputs
   ========================================================= */

.icce-sources__list {
  display: grid;
  gap: 0.5rem;
}

.icce-source {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.55rem;
  min-height: 2rem;
  padding: 0.45rem 0.6rem;
  overflow: visible;
  opacity: 0.58;
  transform: translateX(-4px);
  border: 1px solid var(--icce-line-soft);
  border-radius: 0.6rem;
  background: #fff;
  transition:
    opacity 300ms ease,
    transform 300ms ease,
    border-color 300ms ease,
    background 300ms ease;
}

.icce-source::after {
  position: absolute;
  top: 50%;
  right: -1.4rem;
  width: 1.4rem;
  height: 1px;
  content: "";
  background: var(--icce-line);
}

.icce-source.is-active {
  opacity: 1;
  transform: translateX(0);
  border-color: #a1a1aa;
  background: var(--icce-surface);
}

.icce-source__dot {
  flex: 0 0 auto;
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 999px;
  background: var(--icce-line);
  transition:
    background 300ms ease,
    box-shadow 300ms ease;
}

.icce-source.is-active .icce-source__dot {
  background: var(--icce-green);
  box-shadow: 0 0 9px rgba(16, 185, 129, 0.35);
}

.icce-source__name {
  overflow: hidden;
  color: #52525b;
  font-size: 0.625rem;
  line-height: 1rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.icce-source.is-active .icce-source__name {
  color: var(--icce-ink);
}

.icce-source__packet {
  position: absolute;
  z-index: 3;
  top: calc(50% - 2px);
  left: calc(100% - 2px);
  width: 4px;
  height: 4px;
  border-radius: 999px;
  opacity: 0;
  background: var(--icce-yellow);
  box-shadow:
    0 0 4px var(--icce-yellow),
    0 0 10px rgba(238, 255, 65, 0.55);
}

.icce-source.is-active .icce-source__packet {
  animation: icce-source-packet 900ms ease-out forwards;
}

/* =========================================================
   Transaction spine
   ========================================================= */

.icce-spine .icce-engine__label {
  color: var(--icce-muted);
}

.icce-stage-list {
  position: relative;
  display: grid;
  gap: 0.7rem;
}

.icce-stage-list::before {
  position: absolute;
  z-index: -1;
  top: 1rem;
  bottom: 1rem;
  left: 1rem;
  width: 1px;
  content: "";
  background: var(--icce-line);
}

/* Animated spine runner removed for a quieter line-based treatment. */
.icce-stage-runner {
  display: none;
}

.icce-stage {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.65rem;
  opacity: 0.72;
  transition:
    opacity 300ms ease,
    transform 300ms ease;
}

.icce-stage.is-active,
.icce-stage.is-complete {
  opacity: 1;
}

.icce-stage.is-active {
  transform: translateX(3px);
}

.icce-stage__node {
  position: relative;
  z-index: 2;
  display: grid;
  flex: 0 0 auto;
  width: 2rem;
  height: 2rem;
  place-items: center;
  color: #52525b;
  border: 1px solid #a1a1aa;
  border-radius: 999px;
  background: #fff;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.5rem;
  transition:
    color 300ms ease,
    border-color 300ms ease,
    background 300ms ease;
}

.icce-stage.is-active .icce-stage__node {
  color: #52525b;
  border-color: #a1a1aa;
  background: #fafafa;
}

.icce-stage.is-complete .icce-stage__node {
  color: #52525b;
  border-color: #a1a1aa;
  background: #e4e4e7;
}

.icce-stage__content {
  display: grid;
  min-width: 0;
}

.icce-stage__content span {
  color: #52525b;
  font-size: 0.5625rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.icce-stage__content strong {
  overflow: hidden;
  margin-top: 0.1rem;
  color: var(--icce-muted);
  font-size: 0.625rem;
  font-weight: 500;
  line-height: 1rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.icce-stage.is-active .icce-stage__content span,
.icce-stage.is-active .icce-stage__content strong,
.icce-stage.is-complete .icce-stage__content span,
.icce-stage.is-complete .icce-stage__content strong {
  color: var(--icce-ink);
}

/* =========================================================
   Evidence record
   ========================================================= */

.icce-record {
  min-width: 0;
}

.icce-record__counter {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.7rem 0.8rem;
  border: 1px solid var(--icce-line);
  border-radius: 0.75rem;
  background: #fff;
}

.icce-record__counter > div {
  display: grid;
}

.icce-record__counter [data-evidence-count] {
  color: #27272a;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: -0.04em;
}

.icce-record__counter small {
  color: var(--icce-faint);
  font-size: 0.5rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.icce-record__signal {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding-bottom: 0.2rem;
  color: var(--icce-faint);
  font-size: 0.5rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.icce-record__signal span {
  width: 0.35rem;
  height: 0.35rem;
  border-radius: 999px;
  background: var(--icce-green);
  box-shadow: 0 0 7px rgba(16, 185, 129, 0.4);
}

.icce-record__rows {
  display: grid;
  gap: 0.4rem;
  margin-top: 0.65rem;
}

.icce-record__row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.5rem;
  min-height: 1.8rem;
  padding: 0.35rem 0.5rem;
  opacity: 0.32;
  transform: translateX(5px);
  border-bottom: 1px solid var(--icce-line-soft);
  transition:
    opacity 300ms ease,
    transform 300ms ease,
    border-color 300ms ease;
}

.icce-record__row.is-complete {
  opacity: 1;
  transform: translateX(0);
  border-bottom-color: var(--icce-line);
}

.icce-record__check {
  position: relative;
  display: block;
  width: 0.75rem;
  height: 0.75rem;
  border: 1px solid var(--icce-line);
  border-radius: 999px;
  background: #fff;
}

.icce-record__row.is-complete .icce-record__check {
  border-color: #a1a1aa;
  background: #e4e4e7;
}

.icce-record__row.is-complete .icce-record__check::after {
  position: absolute;
  top: 1px;
  left: 3px;
  width: 3px;
  height: 5px;
  content: "";
  transform: rotate(45deg);
  border-right: 1.5px solid #52525b;
  border-bottom: 1.5px solid #52525b;
}

.icce-record__row > span:nth-child(2) {
  overflow: hidden;
  color: var(--icce-muted);
  font-size: 0.6rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.icce-record__row.is-complete > span:nth-child(2) {
  color: var(--icce-text);
}

.icce-record__row small {
  color: var(--icce-faint);
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.46rem;
  letter-spacing: 0.08em;
}

/* =========================================================
   Authorised stakeholder access
   ========================================================= */

.icce-stakeholders {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.7rem 0;
  border-top: 1px solid var(--icce-line-soft);
}

.icce-stakeholders__title {
  flex: 0 0 auto;
  color: var(--icce-faint);
  font-size: 0.5rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.icce-stakeholders__list {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.35rem;
}

.icce-stakeholders__list span {
  padding: 0.3rem 0.5rem;
  opacity: 0.62;
  color: var(--icce-muted);
  border: 1px solid var(--icce-line-soft);
  border-radius: 999px;
  background: #fff;
  font-size: 0.5rem;
  transition:
    opacity 300ms ease,
    color 300ms ease,
    border-color 300ms ease,
    background 300ms ease;
}

.icce-stakeholders__list span.is-active {
  opacity: 1;
  color: var(--icce-ink);
  border-color: #a1a1aa;
  background: var(--icce-surface);
}

/* =========================================================
   Mobile layout
   ========================================================= */

@media (max-width: 767px) {
  .icce-engine {
    padding: 0.9rem;
    border-radius: 1.25rem;
  }

  .icce-engine__body {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .icce-sources__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .icce-source::after,
  .icce-source__packet {
    display: none;
  }

  .icce-stage-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.3rem;
  }

  .icce-stage-list::before {
    top: 1rem;
    right: 8%;
    bottom: auto;
    left: 8%;
    width: auto;
    height: 1px;
    background: var(--icce-line);
  }


  .icce-stage {
    flex-direction: column;
    gap: 0.45rem;
    text-align: center;
  }

  .icce-stage.is-active {
    transform: translateY(-2px);
  }

  .icce-stage__content strong {
    font-size: 0.5rem;
    line-height: 0.75rem;
    white-space: normal;
  }

  .icce-stage__content span {
    font-size: 0.48rem;
  }

  .icce-stakeholders {
    align-items: flex-start;
    flex-direction: column;
  }

  .icce-stakeholders__list {
    justify-content: flex-start;
  }

  .icce-engine__transaction,
  .icce-engine__footer code {
    display: none;
  }
}

/* =========================================================
   Animation
   ========================================================= */

@keyframes icce-live {
  0% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.35);
  }

  70% {
    box-shadow: 0 0 0 7px rgba(16, 185, 129, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

@keyframes icce-source-packet {
  0% {
    opacity: 0;
    transform: translateX(-4px) scale(0.65);
  }

  25% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: translateX(25px) scale(1.1);
  }
}


/* =========================================================
   Reduced motion
   ========================================================= */

@media (prefers-reduced-motion: reduce) {
  .icce-engine * {
    animation: none !important;
    transition: none !important;
  }

  .icce-source__packet {
    display: none;
  }
}