/* ========== Skeleton shared primitives ========== */
  @keyframes skelShimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
  }

  @keyframes discussionToastIn {
    from { opacity: 0; transform: translateX(-50%) translateY(0.8rem); }
    to { opacity: 1; transform: translateX(-50%) translateY(0); }
  }

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

  .skel-avatar {
    width: 2.6rem; height: 2.6rem; border-radius: 0.7rem; flex-shrink: 0;
    background: linear-gradient(110deg, rgba(218,168,182,0.18) 20%, rgba(238,200,212,0.36) 38%, rgba(218,168,182,0.18) 54%);
    background-size: 220% 100%;
    animation: skelShimmer 1.8s ease-in-out infinite;
  }
  .skel-avatar.sm { width: 2rem; height: 2rem; border-radius: 0.55rem; }

  .skel-body {
    flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 0.55rem;
  }

  .skel-line {
    height: 0.78rem; border-radius: 0.35rem;
    background: linear-gradient(110deg, rgba(218,168,182,0.14) 20%, rgba(238,200,212,0.30) 38%, rgba(218,168,182,0.14) 54%);
    background-size: 220% 100%;
    animation: skelShimmer 1.8s ease-in-out infinite;
  }
  .skel-line.xl { height: 1.15rem; width: 64%; }
  .skel-line.lg { height: 0.95rem; width: 78%; }
  .skel-line.md { height: 0.78rem; width: 48%; }
  .skel-line.sm { height: 0.7rem; width: 32%; }

  /* ========== Topic skeleton ========== */
  .discussion-topic-skeleton {
    display: flex; gap: 0.75rem; align-items: flex-start;
    padding: 1rem 1.05rem;
    border: 1px solid rgba(212, 120, 142, 0.14);
    border-radius: 0.78rem;
    background: rgba(255, 250, 252, 0.65);
    animation: skelCardEnter 0.35s ease-out both;
  }

  /* ========== Announcement skeleton ========== */
  .discussion-announcement-skeleton {
    display: flex; flex-direction: column; gap: 0.5rem;
    padding: 0.85rem 0.95rem;
    border: 1px solid rgba(212, 120, 142, 0.14);
    border-radius: 0.72rem;
    background: rgba(255, 250, 252, 0.60);
    animation: skelCardEnter 0.3s ease-out both;
  }

  /* ========== Reply skeleton ========== */
  .discussion-reply-skeleton {
    display: flex; flex-direction: column; gap: 0.55rem;
    padding: 1rem 1.05rem;
    border: 1px solid rgba(212, 120, 142, 0.12);
    border-radius: 0.72rem;
    background: rgba(255, 250, 252, 0.55);
    animation: skelCardEnter 0.3s ease-out both;
  }

  /* ========== Detail skeleton ========== */
  .discussion-detail-skeleton {
    display: flex; flex-direction: column; gap: 0.6rem;
    padding: 1.2rem 1.1rem;
    border: 1px solid rgba(212, 120, 142, 0.14);
    border-radius: 0.78rem;
    background: rgba(255, 250, 252, 0.65);
    animation: skelCardEnter 0.35s ease-out both;
  }

  /* ========== Category card skeleton ========== */
  .discussion-category-card.discussion-skeleton {
    cursor: default;
    pointer-events: none;
    display: flex; flex-direction: column; gap: 0.5rem;
    padding: 0.75rem 0.9rem;
  }
  .discussion-category-card.discussion-skeleton .discussion-skeleton-line {
    border-radius: 0.35rem;
    background: linear-gradient(110deg, rgba(190,140,155,0.1) 20%, rgba(200,155,170,0.22) 38%, rgba(190,140,155,0.1) 54%);
    background-size: 220% 100%;
    animation: skelShimmer 1.8s ease-in-out infinite;
    height: 0.75rem;
  }

  .discussion-skeleton {
    border: 1px solid rgba(170, 115, 140, 0.12);
    border-radius: 8px;
    padding: 14px;
    background: rgba(255, 255, 255, 0.52);
    display: grid;
    gap: 10px;
  }
  .discussion-skeleton-line {
    height: 0.85rem;
    border-radius: 4px;
    background: linear-gradient(110deg, rgba(190,140,155,0.14) 20%, rgba(200,155,170,0.26) 38%, rgba(190,140,155,0.14) 54%);
    background-size: 220% 100%;
    animation: skelShimmer 1.8s ease-in-out infinite;
  }
  .discussion-skeleton-line.lg { width: 72%; height: 1.05rem; }
  .discussion-skeleton-line.md { width: 44%; }
  .discussion-skeleton-line.sm { width: 28%; height: 0.7rem; }
  .discussion-skeleton-line.avatar {
    width: 2.6rem; height: 2.6rem; border-radius: 0.7rem; flex-shrink: 0;
  }
  .discussion-skeleton-row {
    display: flex; gap: 10px; align-items: flex-start;
  }
  .discussion-skeleton-meta {
    display: flex; gap: 12px; margin-top: 4px;
  }
  @keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
  }

  .discussion-shell.is-loading .discussion-list > .discussion-topic,
  .discussion-shell.is-loading .discussion-thread,
  .discussion-shell.is-loading .discussion-reply-list {
    opacity: 0;
  }

  .discussion-shell {
    transition: opacity 0.16s ease-out;
  }
  .discussion-shell.is-leaving { opacity: 0; transition: opacity 0.1s ease-in; }
  .discussion-shell.is-entering { opacity: 0; }
  .discussion-shell.is-entering.is-visible { opacity: 1; }

  @media (max-width: 900px) {
    .discussion-layout,
    .discussion-grid-2,
    .discussion-profile-page {
      grid-template-columns: 1fr;
    }

    .discussion-profile-sidebar {
      border-right: 0;
      border-bottom: 1px solid rgba(212, 120, 142, 0.16);
      grid-template-columns: auto minmax(0, 1fr);
      padding-right: 0;
      padding-bottom: 0.9rem;
    }

    .discussion-profile-nav {
      align-content: center;
    }

    .discussion-profile-stats {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .discussion-hero,
    .discussion-toolbar {
      align-items: flex-start;
      grid-template-columns: 1fr;
      flex-direction: column;
    }

    .discussion-topbar {
      width: 100%;
      justify-content: space-between;
      margin-left: 0;
    }

    .discussion-filter {
      justify-content: flex-start;
    }

    .discussion-image-tools {
      grid-template-columns: 1fr;
    }

    .discussion-list.is-grid,
    .discussion-avatar-setting {
      grid-template-columns: 1fr;
    }

    .discussion-avatar-crop-frame {
      justify-self: start;
      width: min(100%, 13rem);
    }
  }

  @media (max-width: 640px) {
    .discussion-shell {
      padding: 1.5rem 0.8rem 3rem;
    }

    .discussion-topic-card,
    .discussion-floor-card,
    .discussion-thread-head {
      grid-template-columns: 1fr;
    }

    .discussion-topic-card {
      padding: 0.65rem;
      gap: 0.5rem;
    }

    .discussion-topic-card > .discussion-avatar-link {
      width: 2.4rem;
      height: 2.4rem;
    }

    .discussion-topic-title {
      font-size: 0.92rem;
    }

    .discussion-topic-meta {
      font-size: 0.72rem;
      gap: 0.35rem;
    }

    .discussion-topic-stats {
      min-width: auto;
    }

    .discussion-profile-label {
      display: none;
    }

    .discussion-profile-menu {
      right: 0;
      width: min(82vw, 14rem);
    }

    .discussion-profile-page {
      grid-template-columns: 1fr;
    }

    .discussion-profile-sidebar {
      display: grid;
      grid-template-columns: auto minmax(0, 1fr);
      gap: 0.6rem;
      border-right: none;
      border-bottom: 1px solid rgba(212, 120, 142, 0.16);
      padding-right: 0;
      padding-bottom: 0.6rem;
      align-items: center;
    }

    .discussion-profile-sidebar .discussion-profile-large-avatar {
      width: 3.5rem;
      height: 3.5rem;
      font-size: 1.2rem;
      border-radius: 0.7rem;
      grid-row: span 2;
    }

    .discussion-profile-large-avatar {
      width: 6.4rem;
      height: 6.4rem;
    }

    .discussion-profile-identity {
      align-items: flex-start;
      flex-direction: column;
    }

    .discussion-profile-points {
      text-align: left;
    }

    .discussion-profile-stats,
    .discussion-profile-detail-row {
      grid-template-columns: 1fr;
    }

    .discussion-topic-stats {
      justify-content: flex-start;
      text-align: left;
    }

    .discussion-setting-head {
      display: grid;
    }

    .discussion-author-card {
      justify-items: start;
      text-align: left;
      grid-template-columns: auto minmax(0, 1fr);
    }

    .discussion-category-cards {
      grid-template-columns: repeat(auto-fill, minmax(8rem, 1fr));
    }

    .discussion-editor-bar {
      gap: 0.2rem;
    }

    .discussion-editor-bar button {
      min-width: 1.65rem;
      height: 1.8rem;
      font-size: 0.72rem;
    }

    .discussion-grid-2 {
      grid-template-columns: 1fr;
    }

    .discussion-panel {
      padding: 0.9rem;
      border-radius: 0.85rem;
    }

    .discussion-category-card {
      min-height: 5.4rem;
      padding: 0.62rem 0.68rem;
    }

    .discussion-tag-input-wrap {
      display: grid;
      grid-template-columns: minmax(0, 1fr) 2.5rem;
      gap: 0.4rem;
    }

    .discussion-editor-bar {
      flex-wrap: nowrap;
      overflow-x: auto;
      scrollbar-width: thin;
      padding: 0.42rem;
    }

    .discussion-editor-bar button,
    .discussion-editor-upload-button {
      flex: 0 0 auto;
    }

    .discussion-editor-tools-spacer {
      display: none;
    }

    .discussion-editor-image-input {
      flex: 0 0 10.5rem;
      max-width: 10.5rem;
    }

    .discussion-editor-footer {
      align-items: flex-start;
      flex-direction: column;
    }

    .discussion-textarea {
      min-height: 11.5rem;
    }

    .discussion-message-modal {
      align-items: stretch;
      padding: 0.5rem;
    }

    .discussion-message-modal-panel {
      width: 100%;
      max-height: calc(100dvh - 1rem);
      min-height: min(42rem, calc(100dvh - 1rem));
      border-radius: 0.85rem;
      gap: 0.55rem;
      padding: 0.7rem;
    }

    .discussion-edit-modal .discussion-message-modal-panel {
      width: 100%;
      max-height: calc(100dvh - 1rem);
    }

    .discussion-message-modal-head {
      align-items: flex-start;
      gap: 0.5rem;
    }

    .discussion-message-modal-tabs {
      justify-content: flex-start;
      overflow-x: auto;
      padding-bottom: 0.15rem;
      scrollbar-width: thin;
    }

    .discussion-message-modal-tabs .discussion-btn {
      flex: 0 0 auto;
      min-height: 2rem;
      padding: 0.4rem 0.78rem;
    }

    .discussion-message-window {
      height: calc(100dvh - 7.25rem);
      min-height: 0;
      grid-template-columns: 1fr;
      grid-template-rows: minmax(6rem, 9.5rem) minmax(0, 1fr);
    }

    .discussion-message-sidebar {
      max-height: none;
      min-height: 0;
      border-right: 0;
      border-bottom: 1px solid rgba(111, 85, 242, 0.16);
      padding: 0.55rem;
      overflow: hidden;
    }

    .discussion-message-room-list {
      display: flex;
      gap: 0.5rem;
      overflow-x: auto;
      overflow-y: hidden;
      padding-bottom: 0.1rem;
      scrollbar-width: thin;
    }

    .discussion-message-room {
      grid-template-columns: 2.35rem minmax(0, 1fr) auto;
      min-width: min(78vw, 18rem);
      min-height: 3.55rem;
      gap: 0.55rem;
      padding: 0.52rem 0.58rem;
    }

    .discussion-message-content {
      height: 100%;
      min-height: 0;
      gap: 0.5rem;
      padding: 0.65rem;
      overflow: hidden;
    }

    .discussion-message-thread-head {
      align-items: flex-start;
      flex-wrap: wrap;
      gap: 0.4rem;
      padding-bottom: 0.45rem;
    }

    .discussion-message-system-card.is-visible {
      grid-template-columns: 2.35rem minmax(0, 1fr);
      padding: 0.55rem;
    }

    .discussion-message-thread {
      min-height: 0;
      padding-right: 0.15rem;
      padding-bottom: 0.15rem;
    }

    .discussion-message-bubble {
      max-width: 94%;
      padding: 0.6rem 0.68rem;
    }

    .discussion-message-composer {
      grid-template-columns: minmax(0, 1fr) 4.4rem;
      align-items: start;
      gap: 0.45rem;
      padding-top: 0.45rem;
      padding-bottom: 0;
    }

    .discussion-message-composer .discussion-textarea {
      height: 2.65rem;
      min-height: 2.65rem;
      max-height: 4.5rem;
      padding: 0.68rem 0.75rem;
    }

    .discussion-message-composer .discussion-actions {
      min-width: 0;
    }

    .discussion-message-composer .discussion-actions .discussion-btn {
      height: 2.5rem;
      min-height: 2.5rem;
      border-radius: 0.65rem;
      padding: 0 0.55rem;
    }

    #discussion-modal-message-status {
      max-width: 4.4rem;
      font-size: 0.68rem;
    }

    .discussion-edit-form {
      grid-template-rows: auto minmax(0, 1fr) auto;
      min-height: 0;
    }

    .discussion-edit-split {
      grid-template-columns: 1fr;
      grid-template-rows: minmax(10rem, 1fr) minmax(8rem, 0.85fr);
      overflow-y: auto;
    }

    .discussion-edit-preview-pane {
      max-height: 12rem;
    }

    .discussion-edit-modal .discussion-message-modal-list {
      overflow: hidden;
    }

    .discussion-hero {
      flex-wrap: wrap;
    }

    .discussion-hero h1 {
      font-size: 1.35rem;
    }

    .discussion-topbar {
      display: grid;
      grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto auto;
      gap: 0.45rem;
      align-items: center;
      flex-wrap: wrap;
      justify-content: flex-start;
    }

    .discussion-topbar .discussion-btn {
      min-height: 2.35rem;
      padding: 0.45rem 0.68rem;
      white-space: nowrap;
    }

    .discussion-topbar .discussion-icon-button,
    .discussion-mail-button {
      width: 2.45rem;
      min-width: 2.45rem;
      padding: 0;
    }

    .discussion-profile-button {
      min-width: 2.8rem;
      height: 2.45rem;
      padding: 0.25rem 0.34rem;
    }

    .discussion-profile-avatar {
      width: 1.75rem;
      height: 1.75rem;
      font-size: 0.78rem;
    }

    .discussion-profile-chevron {
      font-size: 0.72rem;
    }

    .discussion-list-side .discussion-announcement-panel {
      order: -1;
    }

    #discussion-category-chips {
      display: flex;
      flex-wrap: nowrap;
      gap: 0.45rem;
      overflow-x: auto;
      padding-bottom: 0.1rem;
      scrollbar-width: thin;
    }

    #discussion-category-chips .discussion-category-chip {
      flex: 0 0 auto;
      min-width: 5.2rem;
      min-height: 2.25rem;
      padding-inline: 0.8rem;
    }

    .discussion-manage-tabs {
      overflow-x: auto;
      flex-wrap: nowrap;
      justify-content: flex-start;
      scrollbar-width: thin;
    }

    .discussion-manage-tab {
      flex: 0 0 auto;
      font-size: 0.76rem;
      padding: 0.3rem 0.6rem;
      white-space: nowrap;
    }

    body:has(.discussion-shell[data-discussion-mode="detail"]) {
      padding-bottom: 5.6rem;
    }

    .discussion-shell[data-discussion-mode="detail"] {
      padding-bottom: 6.5rem;
    }

    .discussion-mobile-tools {
      position: fixed;
      left: 50%;
      right: auto;
      bottom: max(0.65rem, env(safe-area-inset-bottom));
      top: auto;
      z-index: 70;
      width: min(92vw, 24rem);
      transform: translateX(-50%);
      justify-content: space-around;
      gap: 0.35rem;
      padding: 0.38rem;
      box-shadow: 0 16px 46px rgba(118, 54, 76, 0.24);
    }

    .discussion-mobile-tools .discussion-tool-icon {
      width: 2.35rem;
      height: 2.35rem;
    }

  }

  .discussion-topbar-btn {
    min-height: 2.15rem;
    padding: 0.42rem 1rem;
    border-color: rgba(212, 120, 142, 0.28);
    background-color: rgba(255, 255, 255, 0.74);
    background-image: none;
    color: var(--pink-dark);
    box-shadow: 0 10px 28px rgba(180, 80, 106, 0.08);
  }

  .discussion-topbar-btn:hover,
  .discussion-topbar-btn:focus-visible {
    border-color: rgba(212, 120, 142, 0.42);
    background-color: rgba(255, 255, 255, 0.88);
    background-image: none;
    color: var(--pink-dark);
    box-shadow: 0 12px 28px rgba(180, 80, 106, 0.12);
  }

  .discussion-publish-link,
  .discussion-publish-link:link,
  .discussion-publish-link:visited {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    min-height: 2.65rem;
    padding: 0.65rem 2rem !important;
    border: 0 !important;
    border-radius: 999px !important;
    background: linear-gradient(135deg, #e8789a 0%, #d4788e 50%, #c0607a 100%) !important;
    background-color: #d4788e !important;
    background-image: linear-gradient(135deg, #e8789a 0%, #d4788e 50%, #c0607a 100%) !important;
    color: #fff !important;
    -webkit-text-fill-color: #fff !important;
    font: inherit;
    font-size: 1rem !important;
    font-weight: 700 !important;
    line-height: 1;
    text-decoration: none !important;
    box-shadow: 0 8px 20px rgba(180, 80, 106, 0.24) !important;
    cursor: pointer;
    opacity: 1 !important;
    filter: none !important;
    mix-blend-mode: normal !important;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }

  .discussion-publish-link:hover,
  .discussion-publish-link:focus-visible,
  .discussion-publish-link:active {
    background: linear-gradient(135deg, #e8789a 0%, #d4788e 50%, #c0607a 100%) !important;
    background-color: #d4788e !important;
    background-image: linear-gradient(135deg, #e8789a 0%, #d4788e 50%, #c0607a 100%) !important;
    color: #fff !important;
    -webkit-text-fill-color: #fff !important;
    transform: translateY(-1px);
    box-shadow: 0 12px 26px rgba(180, 80, 106, 0.28) !important;
  }