.collab-dialog {
  position: fixed;
  inset: 0;
  width: min(92vw, 620px);
  height: max-content;
  max-height: 90vh;
  margin: auto;
  padding: 0;
  color: var(--color-text-primary);
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.collab-dialog::backdrop {
  background: rgba(5, 5, 48, 0.78);
  backdrop-filter: blur(4px);
}

.collab-dialog__inner {
  position: relative;
  display: grid;
  gap: var(--space-4);
  padding: clamp(var(--space-6), 6vw, var(--space-10));
}

.collab-dialog h2 {
  margin: 0;
  font-size: var(--fs-xl);
}

.collab-dialog p:not(.eyebrow) {
  margin: 0;
  color: var(--color-text-secondary);
}

.collab-dialog__close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-4);
  color: var(--color-text-primary);
  font-size: 2rem;
  line-height: 1;
}

.collab-dialog [data-collab-signup] {
  justify-self: start;
  margin-top: var(--space-2);
}

.collab-card {
  cursor: pointer;
}

/* Cards de "Participe" que abrem um modal (ou levam a outra página): indicador "+" */
.card--action {
  position: relative;
  cursor: pointer;
  padding-bottom: calc(var(--space-6) + var(--space-6));
}
/* Bolinha "+" com pulso em anel — chama atenção também no celular (sem hover).
   O reset global de prefers-reduced-motion já desliga a animação. */
.card--action::after {
  content: "+";
  position: absolute;
  right: var(--space-3);
  bottom: var(--space-3);
  display: grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  font-family: var(--font-primary);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-text-on-accent);
  background: var(--color-accent);
  pointer-events: none;
  animation: tf-card-plus 2.4s var(--ease-out) infinite;
  transition: transform var(--duration-base) var(--ease-out);
}
.participate-grid > :nth-child(2)::after { animation-delay: 0.3s; }
.participate-grid > :nth-child(3)::after { animation-delay: 0.6s; }
.participate-grid > :nth-child(4)::after { animation-delay: 0.9s; }
.card--action:hover::after,
.card--action:focus-visible::after {
  animation: none;
  transform: rotate(90deg) scale(1.15);
  box-shadow: 0 0 0 6px rgba(245, 197, 66, 0.25);
}
@keyframes tf-card-plus {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(245, 197, 66, 0.6);
  }
  15% {
    transform: scale(1.12);
  }
  30% {
    transform: scale(1);
  }
  70%,
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 14px rgba(245, 197, 66, 0);
  }
}
a.card--action {
  display: block;
  color: inherit;
  text-decoration: none;
}
a.card--action:hover {
  color: inherit;
}

.modal-facts {
  display: grid;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--color-text-secondary);
}
.modal-facts strong {
  color: var(--color-text-primary);
}
.collab-dialog [data-modal-cta] {
  justify-self: start;
  margin-top: var(--space-2);
}
.modal-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-2);
}
.collab-dialog .modal-actions [data-modal-cta] {
  margin-top: 0;
}