/* 交流页面样式 */

.forum-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  gap: var(--space-md);
}

.forum-tabs {
  display: flex;
  gap: var(--space-xs);
}

.forum-tab {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  background: var(--color-gray-100);
  color: var(--color-gray-600);
  transition: all var(--duration-fast) ease;
}

.forum-tab:hover {
  background: var(--color-gray-200);
}

.forum-tab.active {
  background: var(--color-black);
  color: var(--color-white);
}

/* Topics List */
.topics-list {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--color-gray-200);
  background: var(--color-white);
}

.topic-item {
  display: flex;
  gap: var(--space-lg);
  padding: var(--space-lg);
  border-bottom: 1px solid var(--color-gray-200);
  transition: background var(--duration-fast) ease;
}

.topic-item:last-child {
  border-bottom: none;
}

.topic-item:hover {
  background: var(--color-gray-50);
}

.topic-votes {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 60px;
  padding: var(--space-sm);
  background: var(--color-gray-100);
}

.topic-votes.solved {
  background: #dcfce7;
}

.vote-count {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
}

.vote-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--color-gray-500);
}

.topic-content {
  flex: 1;
  min-width: 0;
}

.topic-content h3 {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.topic-content p {
  font-size: 0.9rem;
  color: var(--color-gray-600);
  line-height: 1.5;
  margin-bottom: var(--space-sm);
}

.topic-meta {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  flex-wrap: wrap;
}

.topic-author {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
}

.topic-time {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-gray-400);
}

.topic-tag {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  padding: 0.2rem 0.5rem;
  background: var(--color-gray-100);
  color: var(--color-gray-600);
}

.topic-tag.solved {
  background: #dcfce7;
  color: #166534;
}

/* Pagination */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.page-btn {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  color: var(--color-gray-700);
  transition: all var(--duration-fast) ease;
}

.page-btn:hover:not(:disabled) {
  background: var(--color-black);
  border-color: var(--color-black);
  color: var(--color-white);
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-info {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-gray-500);
}

/* ===== MOBILE RESPONSIVE ===== */
@media (max-width: 640px) {
  .forum-actions {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .forum-tabs {
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    width: 100%;
    scrollbar-width: none;
  }
  
  .forum-tabs::-webkit-scrollbar {
    display: none;
  }
  
  .forum-tab {
    flex-shrink: 0;
    font-size: 0.75rem;
    padding: 0.4rem 0.75rem;
    white-space: nowrap;
  }
  
  .topic-item {
    flex-direction: column;
    gap: var(--space-sm);
    padding: var(--space-md);
  }
  
  .topic-votes {
    flex-direction: row;
    min-width: auto;
    padding: var(--space-xs) var(--space-sm);
    align-self: flex-start;
  }
  
  .vote-count {
    font-size: 1.1rem;
  }
  
  .topic-content h3 {
    font-size: 1rem;
  }
  
  .topic-content p {
    font-size: 0.85rem;
  }
  
  .topic-meta {
    gap: var(--space-sm);
  }
  
  .pagination {
    gap: var(--space-sm);
  }
  
  .page-btn {
    padding: 0.4rem 0.75rem;
    font-size: 0.75rem;
  }
  
  /* Page header */
  .page-title {
    font-size: clamp(1.5rem, 6vw, 2.5rem);
  }
  
  .page-desc {
    font-size: 0.95rem;
  }
}