/* ==========================================================================
   Section: FAQ (ЧАСТО ЗАДАВАЕМЫЕ ВОПРОСЫ)
   ========================================================================== */

.faq {
  padding-top: var(--space-section);
  padding-bottom: var(--space-section);
  background: transparent;
}

.faq .container {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

/* Grid — 2 columns */
.faq__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1rem, 2vw, 1.5rem);
}

.faq__column {
  display: flex;
  flex-direction: column;
  gap: clamp(0.75rem, 1.5vw, 1.25rem);
}

/* Single item */
.faq__item {
  border: 1px solid rgba(124, 58, 237, 0.25);
  border-radius: var(--radius-lg);
  background: rgba(15, 15, 35, 0.5);
  overflow: hidden;
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.faq__item:hover {
  border-color: rgba(147, 51, 234, 0.45);
  box-shadow: 0 4px 20px rgba(124, 58, 237, 0.15);
}

.faq__item.is-open {
  border-color: rgba(147, 51, 234, 0.5);
  box-shadow: 0 8px 32px rgba(124, 58, 237, 0.2);
  transform: translateY(-2px);
}

/* Question button */
.faq__question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-lg) var(--space-xl);
  text-align: left;
  color: var(--color-text-primary);
  background: transparent;
  cursor: pointer;
  transition: background 0.3s ease;
}

.faq__question:hover {
  background: rgba(124, 58, 237, 0.08);
}

.faq__question:focus-visible {
  outline: 2px solid var(--color-accent-light);
  outline-offset: -2px;
}

.faq__question-text {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  flex: 1;
  padding-right: var(--space-md);
}

/* Plus / Minus icon */
.faq__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
  border-radius: var(--radius-full);
  background: rgba(124, 58, 237, 0.2);
  color: var(--color-accent-light);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  line-height: 1;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), background 0.3s ease, box-shadow 0.3s ease;
}

.faq__item.is-open .faq__icon {
  transform: rotate(45deg);
  background: rgba(124, 58, 237, 0.4);
  box-shadow: 0 0 12px rgba(124, 58, 237, 0.3);
}

/* Answer */
.faq__answer {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transform: translateY(-8px);
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease, transform 0.3s ease;
}

.faq__item.is-open .faq__answer {
  max-height: 14rem;
  opacity: 1;
  transform: translateY(0);
}

.faq__answer-text {
  padding: 0 var(--space-xl) var(--space-lg);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
  animation: faqFadeIn 0.4s ease forwards;
}

@keyframes faqFadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ─── Desktop wide ─── */
@media (min-width: 1200px) {
  .faq__question {
    padding: var(--space-xl) var(--space-2xl);
  }

  .faq__question-text {
    font-size: var(--font-size-base);
  }

  .faq__answer-text {
    padding: 0 var(--space-2xl) var(--space-xl);
    font-size: var(--font-size-sm);
  }
}

/* ─── Tablet ─── */
@media (max-width: 1024px) {
  .faq__grid {
    grid-template-columns: 1fr;
    gap: var(--space-md);
    max-width: 40rem;
    margin-inline: auto;
  }
}

/* ─── Mobile ─── */
@media (max-width: 768px) {
  .faq__question {
    padding: var(--space-md) var(--space-lg);
  }

  .faq__question-text {
    font-size: var(--font-size-xs);
  }

  .faq__icon {
    width: 1.75rem;
    height: 1.75rem;
    font-size: var(--font-size-lg);
  }

  .faq__answer-text {
    padding: 0 var(--space-lg) var(--space-md);
    font-size: var(--font-size-xs);
  }
}

@media (max-width: 480px) {
  .faq__question {
    padding: var(--space-sm) var(--space-md);
  }

  .faq__answer-text {
    padding: 0 var(--space-md) var(--space-sm);
  }
}