/* M6. Quem Esta na Sala */

/* ============================================================
   M6. QUEM ESTÁ NA SALA (personas interativas)
   ============================================================ */
.personas {
  padding: clamp(80px, 12vw, 140px) clamp(24px, 6vw, 80px);
  background: var(--brn-dark);
}
.personas-header {
  text-align: center;
  margin-bottom: 60px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}
.personas-eyebrow {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--brn-blue-accent);
  margin-bottom: 16px;
}
.personas-title {
  font-family: 'Instrument Sans', 'Inter', sans-serif;
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.personas-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}
@media (max-width: 640px) {
  .personas-grid { grid-template-columns: 1fr; }
}

.persona-card {
  background: var(--brn-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 32px 28px;
  cursor: default;
  transition: all 0.5s var(--ease-smooth);
  position: relative;
  overflow: hidden;
}
.persona-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 3px;
  height: 0;
  background: var(--brn-blue-accent);
  transition: height 0.5s var(--ease-out);
  border-radius: 0 2px 2px 0;
}
.persona-card:hover::before,
.persona-card.expanded::before {
  height: 100%;
}
.persona-card:hover,
.persona-card.expanded {
  border-color: rgba(91,155,255,0.15);
  background: rgba(255,255,255,0.03);
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0,0,0,0.3);
}

.persona-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: var(--brn-blue-glow);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--brn-blue-accent);
  transition: all 0.4s;
}
.persona-icon svg { width: 24px; height: 24px; }
.persona-card:hover .persona-icon,
.persona-card.expanded .persona-icon {
  background: rgba(91,155,255,0.15);
  box-shadow: 0 0 20px var(--brn-blue-glow);
}

.persona-title {
  font-family: 'Instrument Sans', 'Inter', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  transition: color 0.3s;
}
.persona-card:hover .persona-title,
.persona-card.expanded .persona-title {
  color: var(--brn-blue-accent);
}

.persona-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.5s var(--ease-out), opacity 0.4s 0.1s;
}
.persona-card:hover .persona-desc,
.persona-card.expanded .persona-desc {
  max-height: 200px;
  opacity: 1;
}

.persona-hint {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 12px;
  font-weight: 500;
  letter-spacing: 0.05em;
  transition: opacity 0.3s;
}
.persona-card:hover .persona-hint,
.persona-card.expanded .persona-hint {
  opacity: 0;
}