.section-problem {
  background: var(--night);
  padding: var(--section-py) var(--section-px);
  text-align: center;
}

.problem-header { margin-bottom: 52px; }

.problem-h2 {
  font-family: var(--font-display);
  font-size: 56px;
  text-transform: uppercase;
  line-height: 1.1;
  color: var(--white);
  margin-bottom: 16px;
}

.problem-subtitle {
  font-size: 15px;
  color: rgba(255,255,255,.55);
}

.problem-grid {
  display: flex;
  justify-content: center;
  gap: 36px;
  flex-wrap: wrap;
}

.problem-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

@keyframes popIn {
  from { transform: scale(0);  opacity: 0; }
  to   { transform: scale(1);  opacity: 1; }
}

@keyframes labelFadeUp {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.problem-item.reveal {
  opacity: 1;
  transform: none;
  transition: none;
}

.problem-item.reveal:not(.visible) .problem-circle {
  transform: scale(0);
  opacity: 0;
  transition: none;
}
.problem-item.reveal:not(.visible) .problem-label {
  opacity: 0;
  transition: none;
}

.problem-item.visible .problem-circle {
  animation: popIn .55s cubic-bezier(0.34, 1.56, 0.64, 1) both;
}

.problem-item.visible .problem-label {
  animation: labelFadeUp .35s ease-out .3s both;
}

.problem-circle {
  width: 80px;
  height: 80px;
  background: var(--ocre);
  border: 3px solid var(--night-mid);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: default;
}

.problem-circle.pop-done {
  transition: transform .2s ease;
}
.problem-item:hover .problem-circle.pop-done { transform: scale(1.08); }

.problem-label {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 13px;
  text-transform: uppercase;
  color: var(--white);
  letter-spacing: .5px;
}

@media (max-width: 768px) {
  .problem-h2 { font-size: 34px; }
  .problem-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    justify-items: center;
    gap: 28px;
  }
  .problem-circle { width: 64px; height: 64px; }
  .problem-circle svg { width: 26px; height: 26px; }
  .problem-label { font-size: 11px; }
}

@media (max-width: 400px) {
  .problem-grid { grid-template-columns: repeat(2, 1fr); }
}