/* =============================================
   Página de participantes verificados
   ============================================= */

.participantes-main {
  padding: 2rem 0 3.5rem;
}

.participantes-toolbar {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.participantes-stats {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--color-muted);
}

.participantes-stats__item strong {
  color: var(--color-primary);
  font-size: 1.25rem;
}

.participantes-stats__divider {
  color: #cbd5e1;
}

.participantes-filters {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.filter-search,
.filter-select {
  padding: 0.6rem 0.85rem;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-family: inherit;
  color: var(--color-dark);
  background: var(--color-white);
}

.filter-search {
  min-width: 260px;
}

.filter-search:focus,
.filter-select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.15);
}

/* ---------- Tarjetas de participantes ---------- */
.participantes-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.participant-card {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  border: 1px solid #e2e8f0;
  transition: transform 0.15s, box-shadow 0.15s;
}

.participant-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.participant-card__header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.25rem 1.25rem 0.75rem;
}

.participant-card__logo {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  background: var(--color-light);
  border: 1px solid #e2e8f0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.participant-card__logo img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

.participant-card__logo-initials {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-primary);
}

.participant-card__title-block {
  flex: 1;
  min-width: 0;
}

.participant-card__robot {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 0.15rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.participant-card__institution {
  font-size: 0.85rem;
  color: var(--color-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.participant-card__badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0 1.25rem 0.75rem;
}

.badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge--category {
  background: #dbeafe;
  color: #1e40af;
}

.badge--verified {
  background: #dcfce7;
  color: #166534;
}

.badge--verified::before {
  content: "✓ ";
}

.participant-card__body {
  padding: 0 1.25rem 1.25rem;
}

.participant-card__detail {
  display: flex;
  gap: 0.5rem;
  font-size: 0.875rem;
  margin-bottom: 0.4rem;
  color: var(--color-dark);
}

.participant-card__detail dt {
  flex-shrink: 0;
  font-weight: 600;
  color: var(--color-muted);
  min-width: 90px;
}

.participant-card__detail dd {
  margin: 0;
}

/* ---------- Estado vacío ---------- */
.participantes-empty {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--color-muted);
}

.participantes-empty__icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

.participantes-empty h2 {
  font-size: 1.25rem;
  color: var(--color-dark);
  margin-bottom: 0.5rem;
}

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  .participantes-toolbar {
    flex-direction: column;
    align-items: stretch;
  }

  .participantes-filters {
    flex-direction: column;
  }

  .filter-search {
    min-width: unset;
    width: 100%;
  }

  .participantes-grid {
    grid-template-columns: 1fr;
  }
}