/* 
 * forum.css - 极简主义、高对比度蓝白风格社交论坛样式设计
 * 严格禁用任何 emoji 图片作为视觉修饰，采用极轻量化边框、毛玻璃与质感圆角。
 */

#win-forum {
  background-color: #f8fafc;
}

.forum-app-body {
  height: calc(100% - 100px);
  position: relative;
  overflow: hidden;
}

.forum-tab-panel {
  display: none;
  height: 100%;
  width: 100%;
  position: relative;
}

.forum-tab-panel.active {
  display: flex;
  flex-direction: column;
}

/* 侧边 Drawer 样式设计 */
.forum-drawer {
  position: absolute;
  top: 0;
  left: 0;
  width: 260px;
  height: 100%;
  background-color: #ffffff;
  z-index: 1050;
  transform: translateX(-100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 4px 0 24px rgba(15, 23, 42, 0.15);
  display: flex;
  flex-direction: column;
  padding: 24px 16px;
  box-sizing: border-box;
}

.forum-drawer.active {
  transform: translateX(0);
}

.forum-drawer-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(15, 23, 42, 0.4);
  z-index: 1040;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.forum-drawer-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.forum-drawer-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 20px;
  border-bottom: 1px solid #f1f5f9;
  margin-bottom: 20px;
}

.forum-drawer-user-info {
  display: flex;
  flex-direction: column;
}

.forum-drawer-user-info .nickname {
  font-size: 15px;
  font-weight: 700;
  color: #0f172a;
}

.forum-drawer-user-info .username {
  font-size: 12px;
  color: #64748b;
}

.forum-drawer-menu {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* 子页签横条 */
.forum-home-sub-tabs {
  display: flex;
  border-bottom: 1px solid #e2e8f0;
  background-color: #ffffff;
  flex-shrink: 0;
}

.forum-home-sub-tabs .sub-tab {
  flex: 1;
  text-align: center;
  padding: 12px 0;
  font-size: 13px;
  font-weight: 700;
  color: #64748b;
  cursor: pointer;
  position: relative;
}

.forum-home-sub-tabs .sub-tab.active {
  color: #3b82f6;
}

.forum-home-sub-tabs .sub-tab.active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 32px;
  height: 3px;
  background-color: #3b82f6;
  border-radius: 99px;
}

/* 帖子数据流动区 */
.forum-feed-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* 帖子卡片样式 (蓝白极简风) */
.forum-post-card {
  background-color: #ffffff;
  border-radius: 12px;
  border: 1px solid #e2e8f0;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: 0 1px 3px rgba(15, 23, 42, 0.03);
}

.forum-card-header {
  display: flex;
  align-items: center;
  gap: 10px;
}

.forum-author-meta {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.forum-author-name-row {
  display: flex;
  align-items: center;
  gap: 4px;
}

.forum-author-nickname {
  font-size: 13.5px;
  font-weight: 700;
  color: #0f172a;
}

.forum-author-username {
  font-size: 11.5px;
  color: #64748b;
}

.forum-cert-icon {
  color: #3b82f6;
  flex-shrink: 0;
}

.forum-post-title {
  font-size: 15px;
  font-weight: 800;
  color: #0f172a;
  line-height: 1.4;
  margin: 0;
}

.forum-post-body {
  font-size: 13.5px;
  color: #334155;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-all;
  text-align: justify;
}

/* 虚线画描占位图片块 */
.forum-post-media-placeholder {
  background-color: #f0f7ff;
  border: 1.5px dashed #93c5fd;
  border-radius: 8px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  color: #3b82f6;
  cursor: pointer;
}

.forum-post-media-placeholder span {
  font-size: 11px;
  font-weight: 700;
  text-align: center;
  line-height: 1.4;
}

.forum-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
  color: #94a3b8;
  padding-top: 4px;
}

.forum-post-metrics {
  display: flex;
  gap: 8px;
}

/* 帖子底部互动栏 */
.forum-interactive-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-top: 1px solid #f1f5f9;
  padding-top: 10px;
  margin-top: 4px;
}

.forum-action-group {
  display: flex;
  align-items: center;
  gap: 16px;
}

.forum-action-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 12px;
  color: #64748b;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
}

.forum-action-btn.active {
  color: #ef4444;
}

.forum-star-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11.5px;
  font-weight: 700;
  color: #3b82f6;
  background-color: #eff6ff;
  border: 1px solid #bfdbfe;
  padding: 4px 10px;
  border-radius: 99px;
  cursor: pointer;
}

/* 浮动操作按钮 */
.forum-fab {
  position: absolute;
  bottom: 24px;
  right: 24px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background-color: #3b82f6;
  color: #ffffff;
  border: none;
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 1000;
  transition: transform 0.2s ease;
}

.forum-fab:active {
  transform: scale(0.92);
}

/* 二级页面覆盖容器物理规范 */
.forum-layer {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #f8fafc;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  transform: translateY(100%);
}

.forum-layer.active {
  transform: translateY(0);
}

/* 嵌套回复层级视觉线 */
.forum-comments-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 12px 0;
}

.forum-comment-node {
  background-color: #ffffff;
  border: 1px solid #f1f5f9;
  border-radius: 8px;
  padding: 12px;
  margin-top: 4px;
}

.forum-trends-list-box, .forum-notifications-list-box {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.forum-trend-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 12px;
  background-color: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 8px;
  cursor: pointer;
}

.forum-trend-tag {
  font-size: 13.5px;
  font-weight: 700;
  color: #3b82f6;
}

.forum-trend-heat {
  font-size: 11px;
  color: #94a3b8;
}

/* 私信会话列表 */
.forum-msg-tab-panel {
  display: none;
  flex-direction: column;
  gap: 10px;
  padding: 12px;
  height: 100%;
  overflow-y: auto;
}

.forum-msg-tab-panel.active {
  display: flex;
}

.forum-msg-chat-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background-color: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  cursor: pointer;
}

.forum-msg-chat-info {
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 4px;
}

.forum-msg-chat-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.forum-msg-chat-name {
  font-size: 13.5px;
  font-weight: 700;
  color: #0f172a;
}

.forum-msg-chat-time {
  font-size: 10.5px;
  color: #94a3b8;
}

.forum-msg-chat-preview {
  font-size: 12px;
  color: #64748b;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  max-width: 220px;
}

/* 个人主页顶部封面设计 */
.forum-profile-cover {
  width: 100%;
  height: 120px;
  background: #3b82f6;
  position: relative;
  flex-shrink: 0;
}

.forum-profile-avatar-wrapper {
  position: absolute;
  bottom: -36px;
  left: 16px;
  border: 3px solid #ffffff;
  border-radius: 50%;
  background: #ffffff;
  overflow: hidden;
}

.forum-profile-header-actions {
  display: flex;
  justify-content: flex-end;
  padding: 8px 16px;
  gap: 8px;
}

.forum-capsule-btn {
  padding: 6px 14px;
  font-size: 11.5px;
  font-weight: 700;
  border-radius: 99px;
  border: 1px solid #e2e8f0;
  background-color: #ffffff;
  color: #334155;
  cursor: pointer;
}

.forum-capsule-btn.primary {
  background-color: #3b82f6;
  border-color: #3b82f6;
  color: #ffffff;
}

.forum-profile-info-block {
  padding: 0 16px 16px 16px;
  border-bottom: 1px solid #f1f5f9;
  background-color: #ffffff;
}

.forum-profile-bio {
  font-size: 13px;
  color: #475569;
  margin: 6px 0;
  line-height: 1.4;
}

.forum-profile-counter {
  font-size: 11px;
  color: #64748b;
}

/* 通知红点 */
.forum-notification-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px;
  background-color: #ffffff;
  border: 1px solid #e2e8f0;
  border-radius: 10px;
  cursor: pointer;
  position: relative;
}

.forum-notification-item.unread::before {
  content: "";
  position: absolute;
  top: 12px;
  right: 12px;
  width: 6px;
  height: 6px;
  background-color: #3b82f6;
  border-radius: 50%;
}

/* 侧边栏头像物理硬性尺寸约束 */
#forum-drawer-avatar.avatar-md {
  width: 54px !important;
  height: 54px !important;
  border-radius: 50% !important;
  object-fit: cover !important;
  flex-shrink: 0 !important;
  border: 1.5px solid #e2e8f0 !important;
  box-sizing: border-box !important;
}

/* 论坛底部主导航栏横向铺开高保真约束 */
.win-footer.forum-tabs {
  display: flex !important;
  flex-direction: row !important;
  justify-content: space-around !important;
  align-items: center !important;
  background-color: #ffffff !important;
  border-top: 1px solid #e2e8f0 !important;
  height: 50px !important;
  padding: 0 !important;
  width: 100% !important;
  box-sizing: border-box !important;
}

.win-footer.forum-tabs .tab-item {
  flex: 1 !important;
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  justify-content: center !important;
  background: none !important;
  border: none !important;
  padding: 4px 0 !important;
  color: #64748b !important;
  cursor: pointer !important;
  height: 100% !important;
  box-sizing: border-box !important;
}

.win-footer.forum-tabs .tab-item.active {
  color: #3b82f6 !important;
}

.win-footer.forum-tabs .tab-item svg {
  width: 20px !important;
  height: 20px !important;
  margin-bottom: 2px !important;
}

.win-footer.forum-tabs .tab-item span {
  font-size: 10px !important;
  font-weight: 700 !important;
}