/* ============================================================
   Component · Training Preview  (homepage strip — next session)
   Mini timeline w/ module dot, dates, seats counter.
   ============================================================ */

.training-preview {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}
@media (min-width: 1024px) {
  .training-preview {
    grid-template-columns: minmax(0, 0.45fr) minmax(0, 0.55fr);
    gap: var(--space-2xl);
    align-items: end;
  }
}

.training-preview__heading {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

/* Mini learning path schematic (SVG inside) */
.training-path-mini {
  display: block;
  width: 100%;
  height: auto;
  margin-top: var(--space-md);
  color: var(--color-border);
}
.training-path-mini text { font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.1em; }

/* Session card */
.session {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: var(--space-lg);
  align-items: center;
  padding: var(--space-lg);
  background: var(--color-white);
  border: 1px solid var(--color-border);
  position: relative;
  transition: border-color var(--duration-fast) var(--ease-out);
}
.session + .session { margin-top: -1px; }
.session:hover { border-color: var(--color-ink); z-index: 1; }

.session__date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-align: center;
  line-height: 1.2;
  color: var(--color-ink-muted);
}
.session__date .day {
  display: block;
  font-size: clamp(1.4rem, 1.1rem + 0.5vw, 1.75rem);
  color: var(--color-ink);
  font-weight: 500;
  margin-bottom: 2px;
}

.session__body { display: flex; flex-direction: column; gap: 4px; }
.session__module {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-base);
  color: var(--color-ink);
}
.session__meta {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.session__seats {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
}
.session__seats-num {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-variant-numeric: tabular-nums;
  color: var(--color-ink);
}
.session__seats-label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-ink-muted);
}

.session__cta {
  grid-column: 1 / -1;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin-top: var(--space-md);
  padding: 0.5rem 0;
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-accent);
  border-top: 1px solid var(--color-border);
}
.session__cta .arrow { transition: transform var(--duration-fast) var(--ease-out); }
.session__cta:hover .arrow { transform: translateX(4px); }

.session.is-open .session__seats-num { color: var(--color-success); }
.session.is-filling .session__seats-num { color: var(--color-accent); animation: breathing 2.4s ease-in-out infinite; }

/* ============================================================
   Training preview — motion & interactivity (same language)
   ============================================================ */

/* Staggered reveal — scoped so the session's own border-color hover
   transition survives; per-card delay via --stagger-i. */
.session[data-reveal] {
  opacity: 0;
  transform: translateY(20px);
  transition:
    opacity var(--duration-slow) var(--ease-out) calc(var(--stagger-i, 0) * 100ms),
    transform var(--duration-slow) var(--ease-out) calc(var(--stagger-i, 0) * 100ms),
    border-color var(--duration-fast) var(--ease-out);
}
.session[data-reveal].is-visible { opacity: 1; transform: translateY(0); }

/* "Book this session" — accent underline draws in on hover */
.session__cta { position: relative; }
.session__cta::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: -3px;
  height: 1px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left center;
  transition: transform var(--duration-normal) var(--ease-out);
  pointer-events: none;
}
.session__cta:hover::after { transform: scaleX(1); }
.session:hover .session__cta::after { transform: scaleX(1); }

/* ============================================================
   Session card — CAD viewport treatment (components/card-cad.css)
   Top-right belongs to the seat count, so the readout sits in the
   bottom-right, opposite the CTA.
   ============================================================ */
.session {
  --cad-read-top: auto;
  --cad-read-bottom: var(--space-lg);
  --cad-read-right: var(--space-lg);
  --cad-inset: 8px;
  overflow: hidden; /* keeps the leader line and wash inside the rule */
}
.session > *:not(.cad) { position: relative; z-index: 2; }

/* Leader line drops down the left edge, the way a callout leader is
   drawn to the thing it annotates. */
.session::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-accent);
  transform: scaleY(0);
  transform-origin: center top;
  transition: transform var(--duration-slow) var(--ease-out);
  z-index: 1;
}
.session:hover::before,
.session:focus-within::before { transform: scaleY(1); }

/* Pointer-tracked wash, fed by --mx/--my from card-cad.js */
.session::after {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at var(--mx, 50%) var(--my, 50%),
    color-mix(in srgb, var(--color-accent) 9%, transparent) 0%,
    transparent 60%
  );
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
  pointer-events: none;
  z-index: 0;
}
.session:hover::after { opacity: 1; }

.session__date .day { transition: color var(--duration-fast) var(--ease-out); }
.session:hover .session__date .day { color: var(--color-accent); }

@media (prefers-reduced-motion: reduce) {
  .session::before,
  .session::after { transition: none; }
}

/* Training path mini — connectors draw in when the heading reveals,
   and the coordination node breathes. */
.training-path-mini line {
  stroke-dasharray: 175;
  stroke-dashoffset: 175;
  transition: stroke-dashoffset 900ms var(--ease-out);
}
.training-preview__heading.is-visible .training-path-mini line { stroke-dashoffset: 0; }
.training-path-mini__end {
  transform-box: fill-box;
  transform-origin: center;
  animation: node-pulse 2.4s ease-in-out infinite;
}
@keyframes node-pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.28); }
}

/* Signal pulses travel the whole path start → finish, one per specialist
   track. They share the trunk and tail, so they sequence through the
   common segments and fan out across the middle — the curriculum, live.
   offset-distance runs on total path length, so speed is constant across
   segments; the slightly longer diagonal routes arrive a touch later,
   which keeps the flow from marching in lockstep. */
.training-pulse {
  fill: var(--color-accent);
  opacity: 0; /* hidden until the strip scrolls into view */
  offset-rotate: 0deg;
  filter: drop-shadow(0 0 3px rgba(103, 194, 197, 0.85));
}
.training-pulse--a { offset-path: path('M 56 64 L 190 64 L 330 20 L 450 64 L 546 64'); }
.training-pulse--b { offset-path: path('M 56 64 L 190 64 L 330 64 L 450 64 L 546 64'); }
.training-pulse--c { offset-path: path('M 56 64 L 190 64 L 330 108 L 450 64 L 546 64'); }

.training-preview__heading.is-visible .training-pulse {
  animation: training-flow 3200ms var(--ease-in-out) infinite;
}
/* Stagger the emissions so the trunk carries a steady procession. */
.training-preview__heading.is-visible .training-pulse--a { animation-delay: 900ms; }
.training-preview__heading.is-visible .training-pulse--b { animation-delay: 1400ms; }
.training-preview__heading.is-visible .training-pulse--c { animation-delay: 1900ms; }

@keyframes training-flow {
  0%   { offset-distance: 0%;   opacity: 0; }
  8%   { opacity: 1; }
  92%  { opacity: 1; }
  100% { offset-distance: 100%; opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .session[data-reveal] {
    opacity: 1;
    transform: none;
    transition: border-color var(--duration-fast) var(--ease-out);
  }
  .session__cta::after { transition: none; }
  .training-path-mini line { stroke-dashoffset: 0; transition: none; }
  .training-path-mini__end { animation: none; }
  .training-pulse { animation: none; opacity: 0; }
}