/* ============================================================
   FAQ 页面专属样式
   共享布局（navbar/page-header/container/site-footer）→ shared.css
   ============================================================ */

/* --- 搜索区域 --- */
.faq-search {
  margin-top: 1.5rem;
  display: flex;
  justify-content: center;
}

.faq-search-input {
  width: 100%;
  max-width: 480px;
  padding: 0.85rem 1.25rem;
  border: 2px solid rgba(99,102,241,0.12);
  border-radius: var(--radius);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: all 0.25s;
  outline: none;
}

.faq-search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-glow);
}

.faq-search-input::placeholder {
  color: var(--text-muted);
}

/* 无结果 */
.no-results {
  display: none;
  text-align: center;
  margin-top: 1rem;
  color: rgba(255, 255, 255, 0.45);
  font-size: 0.9rem;
  padding: 1rem;
  border-radius: 8px;
  background: rgba(255, 180, 60, 0.08);
  border: 1px solid rgba(255, 180, 60, 0.15);
}

.no-results.show {
  display: block;
}

/* FAQ 主内容 */
.faq-content {
  padding: 3rem 1.5rem 5rem;
  max-width: 860px;
  margin: 0 auto;
}

.faq-section {
  margin-bottom: 3rem;
}

/* 搜索时，空 section 自动隐藏 */
.faq-section.empty-section {
  display: none;
}

.section-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--accent-light);
  padding-bottom: 0.6rem;
  border-bottom: 2px solid rgba(99, 102, 241, 0.2);
  margin-bottom: 1.25rem;
}

/* FAQ 条目 */
.faq-item {
  margin-bottom: 0.25rem;
  border: 1px solid rgba(99,102,241,0.06);
  border-radius: 10px;
  background: var(--bg-card);
  transition: all var(--transition-slow);
  overflow: hidden;
}

.faq-item:hover {
  border-color: rgba(99,102,241,0.15);
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.faq-item.filtered-out {
  display: none;
}

.faq-item.filtered-match-highlight {
  border-color: rgba(99, 102, 241, 0.3);
  background: rgba(99, 102, 241, 0.06);
}

.faq-question {
  padding: 1.15rem 1.25rem;
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
  transition: color 0.2s;
}

.faq-question:hover {
  color: var(--text-primary);
}

.faq-question::after {
  content: "+";
  font-size: 1.3rem;
  font-weight: 300;
  color: var(--text-muted);
  transition: all 0.25s ease;
  flex-shrink: 0;
  margin-left: 1rem;
}

/* 展开时：变为 − 号，轻微旋转过渡更自然 */
.faq-item.open .faq-question {
  color: var(--accent-light);
}

.faq-item.open .faq-question::after {
  content: "\2212";
  color: var(--accent-light);
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding: 0 1.25rem 1.25rem;
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.75;
}

.faq-item.open .faq-answer {
  display: block;
}

.faq-answer p {
  margin-bottom: 0.75rem;
}

.faq-answer p:last-child {
  margin-bottom: 0;
}

.faq-answer ul,
.faq-answer ol {
  margin: 0.5rem 0 1rem;
  padding-left: 1.5rem;
}

.faq-answer li {
  margin-bottom: 0.3rem;
}

.faq-answer strong {
  color: var(--text-primary);
}

.faq-answer a {
  color: var(--accent-light);
  text-decoration: none;
  border-bottom: 1px solid rgba(129, 140, 248, 0.3);
  transition: border-color 0.2s;
}

.faq-answer a:hover {
  border-color: var(--accent-light);
}

/* --- 响应式 --- */
@media (max-width: 768px) {
  .faq-content {
    padding: 2rem 1rem 4rem;
  }

  .faq-question {
    font-size: 0.94rem;
    padding: 1rem 1rem;
  }

  .faq-answer {
    font-size: 0.88rem;
    padding: 0 1rem 1rem;
  }
}