/* ========================================
   AI创意工坊 - 帮助中心 特有样式
   （布局、侧边栏、头部导航等复用 style.css）
   ======================================== */

/* 帮助中心布局 */
.help-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 32px;
  max-width: 1400px;
}

/* 文章内容 */
.help-main {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-default);
  border-radius: 20px;
  overflow: hidden;
}

.article-header {
  padding: 40px;
  border-bottom: 1px solid var(--border-default);
  background: linear-gradient(135deg, rgba(254, 141, 22, 0.08) 0%, transparent 100%);
}

.article-category {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(254, 141, 22, 0.15);
  border-radius: 20px;
  font-size: 0.8rem;
  color: var(--primary);
  margin-bottom: 16px;
}

.article-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: 20px;
  line-height: 1.3;
}

.article-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.article-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 40px;
  height: 40px;
  background: var(--gradient-orange);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}

.article-info {
  display: flex;
  align-items: center;
  gap: 24px;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.article-date, .article-views {
  display: flex;
  align-items: center;
  gap: 6px;
}

.article-date svg, .article-views svg { width: 16px; height: 16px; }

/* 文章正文 */
.article-content { padding: 40px; }

.article-section { margin-bottom: 32px; }
.article-section:last-child { margin-bottom: 0; }

.article-section h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--text-primary);
}

.article-section p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.content-list {
  margin: 16px 0;
  padding-left: 24px;
}

.content-list li {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 8px;
  position: relative;
}

.content-list li::marker { color: var(--primary); }

/* 代码块 */
.code-block {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-default);
  border-radius: 12px;
  overflow: hidden;
  margin: 20px 0;
}

.code-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: rgba(255, 255, 255, 0.03);
  border-bottom: 1px solid var(--border-default);
}

.code-lang {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-family: monospace;
}

.copy-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  transition: color 0.2s;
}

.copy-btn:hover { color: var(--primary); }
.copy-btn svg { width: 16px; height: 16px; }

.code-block pre {
  padding: 16px;
  margin: 0;
  overflow-x: auto;
}

.code-block code {
  font-family: 'Fira Code', monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--text-secondary);
  white-space: pre-wrap;
}

/* 文章标签 */
.article-tags {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 24px;
  border-top: 1px solid var(--border-default);
  margin-top: 32px;
}

.tag-label { color: var(--text-muted); font-size: 0.9rem; }

.tag {
  padding: 6px 14px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-default);
  border-radius: 20px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-decoration: none;
  transition: all 0.2s;
}

.tag:hover {
  border-color: var(--primary);
  color: var(--primary);
}

/* 上一篇、下一篇 */
.article-links {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid var(--border-default);
  margin-top: 32px;
}

.prev-article, .next-article {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-default);
  border-radius: 12px;
  text-decoration: none;
  color: var(--text-secondary);
  transition: all 0.2s;
  flex: 1;
  max-width: 45%;
}

.prev-article:hover, .next-article:hover {
  border-color: var(--primary);
  background: rgba(254, 141, 22, 0.05);
}

.prev-article svg, .next-article svg { width: 20px; height: 20px; flex-shrink: 0; }

.prev-article span, .next-article span {
  display: flex;
  flex-direction: column;
  gap: 4px;
  overflow: hidden;
}

.prev-article small, .next-article small { font-size: 0.75rem; color: var(--text-muted); }
.prev-article strong, .next-article strong { font-size: 0.9rem; color: var(--text-primary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.next-article { text-align: right; justify-content: flex-end; }
.next-article span { align-items: flex-end; }

/* 反馈区域 */
.feedback-section {
  padding: 32px 40px;
  background: rgba(255, 255, 255, 0.02);
  border-top: 1px solid var(--border-default);
  text-align: center;
}

.feedback-section h3 {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.feedback-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
}

.feedback-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-default);
  border-radius: 12px;
  color: var(--text-secondary);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s;
}

.feedback-btn:hover { border-color: var(--primary); color: var(--primary); }
.feedback-btn.active { background: rgba(254, 141, 22, 0.15); border-color: var(--primary); color: var(--primary); }
.feedback-btn svg { width: 18px; height: 18px; }

.feedback-thanks {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
  color: #22C55E;
  font-size: 0.9rem;
}

.feedback-thanks svg { width: 18px; height: 18px; }

/* 帮助侧边栏 */
.help-sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.sidebar-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-default);
  border-radius: 16px;
  padding: 24px;
}

.sidebar-card-title {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.sidebar-card-title svg { width: 20px; height: 20px; stroke: var(--primary); }

/* 文章列表 */
.article-list { display: flex; flex-direction: column; gap: 12px; }

.article-item {
  display: block;
  padding: 14px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-default);
  border-radius: 12px;
  text-decoration: none;
  transition: all 0.2s;
}

.article-item:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--border-hover);
  transform: translateX(4px);
}

.article-item.active {
  background: rgba(254, 141, 22, 0.1);
  border-color: var(--primary);
}

.article-item-category {
  font-size: 0.72rem;
  color: var(--primary);
  margin-bottom: 6px;
}

.article-item-title {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-primary);
  margin-bottom: 8px;
  line-height: 1.4;
}

.article-item-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* 热门文章 */
.hot-article-list { display: flex; flex-direction: column; gap: 10px; }

.hot-article-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.02);
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.2s;
}

.hot-article-item:hover { background: rgba(254, 141, 22, 0.1); }

.hot-rank {
  width: 24px;
  height: 24px;
  background: var(--gradient-orange);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  flex-shrink: 0;
}

.hot-title {
  font-size: 0.85rem;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* 联系客服 */
.contact-card { background: linear-gradient(135deg, rgba(254, 141, 22, 0.1) 0%, rgba(255, 107, 53, 0.05) 100%); }

.contact-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.5;
}

.contact-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  width: 100%;
  padding: 12px;
  background: var(--gradient-orange);
  border: none;
  border-radius: 10px;
  color: white;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: all 0.3s;
}

.contact-btn:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(254, 141, 22, 0.4); }
.contact-btn svg { width: 18px; height: 18px; }

/* 响应式 */
@media (max-width: 1200px) {
  .help-layout { grid-template-columns: 1fr 280px; gap: 24px; }
}

@media (max-width: 1024px) {
  .help-layout { grid-template-columns: 1fr; }
  .help-sidebar { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .contact-card { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  .article-header { padding: 24px; }
  .article-title { font-size: 1.5rem; }
  .article-meta { flex-direction: column; align-items: flex-start; }
  .article-content { padding: 24px; }
  .feedback-section { padding: 24px; }
  .article-links { flex-direction: column; }
  .prev-article, .next-article { max-width: 100%; }
  .help-sidebar { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .article-header { padding: 20px 16px; }
  .article-title { font-size: 1.25rem; }
  .article-content { padding: 20px 16px; }
  .article-section h2 { font-size: 1.1rem; }
  .article-section p { font-size: 0.9rem; }
  .feedback-buttons { flex-direction: column; }
  .feedback-btn { width: 100%; justify-content: center; }
}