/* ============================================================
   Diagram-specific Styles and Animations
   Version 1.2.0 | Light-mode only
   ============================================================ */

/* ---------- State Machine Diagram ---------- */
.state-machine-diagram {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  margin-bottom: 1rem;
}

.state-node {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0.9rem;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 600;
  color: #fff;
  background: var(--color-primary);
  cursor: default;
  transition: all 0.3s ease;
  position: relative;
}

.state-node:hover {
  transform: scale(1.05);
  box-shadow: 0 3px 10px rgba(0,0,0,0.15);
}

.state-node.active-state {
  animation: statePulse 1.5s ease-in-out infinite;
}

@keyframes statePulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(39, 174, 96, 0.4); }
  50% { box-shadow: 0 0 0 8px rgba(39, 174, 96, 0); }
}

.state-arrow {
  color: var(--color-text-light);
  font-size: 1.2rem;
  padding: 0 0.15rem;
  user-select: none;
}

/* State colors */
.state-node.state-idle       { background: #7f8c8d; }
.state-node.state-scheduled  { background: #2980b9; }
.state-node.state-precheck   { background: #3498db; }
.state-node.state-gates      { background: #8e44ad; }
.state-node.state-approval   { background: #e67e22; }
.state-node.state-preparing  { background: #f39c12; }
.state-node.state-active     { background: #27ae60; }
.state-node.state-inprogress { background: #27ae60; }
.state-node.state-paused     { background: #e67e22; }
.state-node.state-completing { background: #16a085; }
.state-node.state-completed  { background: #27ae60; }
.state-node.state-aborted    { background: #c0392b; }
.state-node.state-triggered  { background: #e74c3c; }
.state-node.state-acknowledged { background: #e67e22; }
.state-node.state-recovering { background: #f39c12; }

/* ---------- Gate Visualization ---------- */
.gate-pipeline {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 1rem 0;
}

.gate-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.65rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: 6px;
  transition: all 0.3s ease;
}

.gate-item:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow);
}

.gate-num {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

.gate-status {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
}

.gate-status.pass { background: #d5f5e3; color: #1e8449; }
.gate-status.fail { background: #fadbd8; color: #922b21; }
.gate-status.pending { background: #fdebd0; color: #b7950b; }
.gate-status.timeout { background: #e8e8e8; color: #666; }

/* ---------- Network Topology Lines ---------- */
.network-visual {
  position: relative;
  padding: 1.5rem;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  margin: 1rem 0;
  overflow: hidden;
}

.network-node {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.4rem 0.8rem;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: #fff;
  background: var(--color-primary);
  margin: 0.25rem;
}

/* ---------- Hash Chain Visual ---------- */
.hash-chain {
  display: flex;
  gap: 0;
  overflow-x: auto;
  padding: 1rem 0;
  align-items: center;
}

.hash-block {
  flex-shrink: 0;
  width: 120px;
  padding: 0.6rem;
  background: var(--color-bg);
  border: 2px solid var(--color-primary);
  border-radius: 6px;
  text-align: center;
  font-size: 0.72rem;
  font-family: var(--font-mono);
  position: relative;
}

.hash-block .block-index {
  font-weight: 700;
  color: var(--color-primary);
  font-size: 0.85rem;
  margin-bottom: 0.2rem;
}

.hash-block .block-hash {
  color: var(--color-text-light);
  word-break: break-all;
  font-size: 0.65rem;
  line-height: 1.3;
}

.hash-link {
  flex-shrink: 0;
  width: 30px;
  text-align: center;
  color: var(--color-primary);
  font-size: 1.2rem;
}

/* ---------- Privacy Pipeline ---------- */
.privacy-stage {
  display: flex;
  align-items: stretch;
  gap: 1rem;
  margin: 1rem 0;
  flex-wrap: wrap;
  justify-content: center;
}

.stage-card {
  flex: 1;
  min-width: 200px;
  max-width: 300px;
  padding: 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius);
  text-align: center;
  position: relative;
}

.stage-card h4 {
  font-size: 0.88rem;
  color: var(--color-primary);
  margin-bottom: 0.4rem;
}

.stage-card .stage-num {
  display: inline-flex;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--color-primary);
  color: #fff;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.stage-card ul {
  text-align: left;
  margin: 0.4rem 0 0 1rem;
  font-size: 0.8rem;
}

.stage-card li {
  margin-bottom: 0.15rem;
}

.stage-connector {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
  color: var(--color-primary);
}

/* ---------- Federated Learning Visual ---------- */
.fed-round {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: 1rem;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  margin: 1rem 0;
}

.fed-step {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: var(--color-bg);
  border-radius: 6px;
  border-left: 3px solid var(--color-primary);
  font-size: 0.85rem;
}

.fed-step .step-num {
  font-weight: 700;
  color: var(--color-primary);
  min-width: 1.5rem;
}

/* ---------- Interactive animations ---------- */
@keyframes flowRight {
  0% { opacity: 0; transform: translateX(-10px); }
  50% { opacity: 1; }
  100% { opacity: 0; transform: translateX(10px); }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.animate-in {
  animation: fadeIn 0.5s ease forwards;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .state-machine-diagram { gap: 0.3rem; }
  .state-node { padding: 0.35rem 0.6rem; font-size: 0.7rem; }
  .hash-chain { flex-wrap: nowrap; }
  .hash-block { width: 100px; }
  .privacy-stage { flex-direction: column; align-items: center; }
  .stage-connector { transform: rotate(90deg); }
}