/* Chain animation — /chain */

.chain-section { padding: 1.5rem 0 4rem; }

.chain-status {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 0.75rem;
  padding: 0.6rem 1rem;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: 0 1px 2px rgba(15,23,42,.04);
}

.chain-flow-wrap {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 0.9rem;
}
.chain-flow-inner {
  flex: 1;
  min-width: 0;
}
.chain-side-btn {
  flex-shrink: 0;
  width: 2.6rem;
  height: 2.6rem;
  padding: 0 !important;
  border-radius: 50% !important;
  font-size: 1.5rem !important;
  line-height: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hv-btn-sm {
  padding: 0.3rem 0.75rem !important;
  font-size: 0.8rem !important;
}

.chain-arrow {
  display: inline-block;
  font-weight: 600;
  transform: translateY(-1px);
}
.hv-btn[disabled] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

.chain-step {
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.05em;
  display: inline-flex;
  align-items: baseline;
  gap: 0.35rem;
  padding: 0.35rem 0.8rem;
  background: var(--surface-soft);
  border-radius: 999px;
}
.chain-step-label {
  text-transform: uppercase;
  font-size: 0.68rem;
  color: var(--muted);
}
.chain-step-num {
  font-size: 1rem;
  font-weight: 700;
  color: var(--ink);
}
.chain-step-sep { color: var(--border); }
.chain-step-total { color: var(--muted); }

.chain-progress-wrap {
  flex: 1;
  position: relative;
}
.chain-progress-bar {
  height: 4px;
  background: var(--border-dim, var(--border));
  border-radius: 999px;
  overflow: hidden;
}
.chain-progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--threat, #ea580c));
  border-radius: 999px;
  transition: width 400ms cubic-bezier(.4,0,.2,1);
}

/* Flow */
.chain-flow {
  background: linear-gradient(180deg, #0b1220 0%, #111a2e 100%);
  border-radius: 14px;
  padding: 0.75rem 0.5rem 0.5rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 10px 32px -16px rgba(15,23,42,0.4);
}
.chain-flow::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px),
    linear-gradient(180deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at center, rgba(0,0,0,.9), transparent 78%);
  pointer-events: none;
}

.chain-svg {
  width: 100%;
  height: auto;
  display: block;
  position: relative;
}

.chain-node { cursor: pointer; transition: filter .2s; }
.chain-node:hover circle { filter: brightness(1.25); }
.chain-node.active circle {
  filter: drop-shadow(0 0 14px rgba(79,70,229,0.55));
}
.chain-node-cve.active circle {
  filter: drop-shadow(0 0 14px rgba(234,88,12,0.6));
}
.chain-node-rce.active circle {
  filter: drop-shadow(0 0 14px rgba(220,38,38,0.6));
}

#chain-packet { pointer-events: none; filter: drop-shadow(0 0 8px rgba(99,102,241,0.7)); }

/* Labels — sibling of .chain-flow (outside overflow:hidden), dark bg to match */
.chain-labels {
  position: relative;
  height: 96px;
  background: linear-gradient(180deg, #111a2e 0%, #0d1526 100%);
  border-radius: 0 0 14px 14px;
  margin-top: -2px;
}
.chain-label {
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  text-align: center;
  width: 150px;
  cursor: pointer;
  padding: 0.3rem 0.3rem;
  border-radius: 8px;
  transition: background-color .2s;
}
.chain-label:hover { background-color: rgba(255,255,255,0.03); }
.chain-label-num {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: #64748b;
  letter-spacing: 0.1em;
}
.chain-label-name {
  color: #e2e8f0;
  font-weight: 600;
  font-size: 0.92rem;
  margin-top: 0.15rem;
}
.chain-label-sub {
  color: #94a3b8;
  font-size: 0.76rem;
  margin-top: 0.2rem;
  line-height: 1.3;
}
.chain-label-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.05em;
  color: #fb923c;
  background: rgba(234,88,12,0.1);
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  margin-bottom: 0.25rem;
}
.chain-label-cve .chain-label-name { color: #fed7aa; }
.chain-label-rce .chain-label-name { color: #fecaca; }

.chain-label.active .chain-label-name {
  text-shadow: 0 0 18px rgba(165,180,252,0.6);
}

/* Detail panel — fixed height so switching stages never shifts the page */
.chain-detail {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.25rem 1.5rem 1.4rem;
  box-shadow: 0 1px 2px rgba(15,23,42,.04);
  height: 490px;
  overflow-y: auto;
  scrollbar-gutter: stable;
}
.chain-detail-head { margin-bottom: 0.75rem; }
.chain-detail-badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  background: var(--threat-soft);
  color: var(--threat-deep);
  padding: 0.25rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 0.4rem;
}
.chain-detail-badge.muted { background: var(--accent-soft); color: var(--accent-deep); }
.chain-detail-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0;
  color: var(--ink);
}
.chain-detail-sub {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 0.25rem;
}
.chain-detail-body { font-size: 0.95rem; line-height: 1.6; }
.chain-detail-body p { margin-bottom: 0.65rem; }
.chain-detail-body p:last-child { margin-bottom: 0; }
.chain-detail-body code {
  background: var(--surface-soft);
  padding: 0.1em 0.4em;
  border-radius: 4px;
  font-size: 0.88em;
}

.chain-meta {
  margin: 0.8rem 0 0;
  padding: 0.65rem 0.9rem;
  background: var(--surface-soft);
  border-radius: 8px;
  list-style: none;
  font-size: 0.88rem;
}
.chain-meta li { padding: 0.2rem 0; }
.chain-meta strong { font-weight: 600; color: var(--ink); display: inline-block; min-width: 130px; }

.chain-detail-refs {
  margin-top: 0.9rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 0.6rem;
}
.chain-detail-refs a {
  font-size: 0.78rem;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  transition: border-color .15s, color .15s;
}
.chain-detail-refs a:hover {
  border-color: var(--accent);
  text-decoration: none;
}

.chain-footnote {
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--muted);
  padding: 0.9rem 1.1rem;
  border-left: 3px solid var(--accent);
  background: var(--accent-soft);
  border-radius: 0 8px 8px 0;
}