/* ==========================================
   forum.css（v83）论坛
   - 列表（玻璃卡片 + 分类 pill + 排序）/ 详情（楼层回复 + 点赞）/ 发帖浮层（居中弹窗）
   - 深浅色全走 var()，无需手动切换
   ========================================== */

/* ---------- 页面骨架 ---------- */
.forum-page {
  max-width: 760px;
  margin: 0 auto;
  padding: 42px 24px 96px;
}

.forum-hero {
  position: relative;
  padding: 30px 4px 22px;
}

.forum-hero-glow {
  position: absolute;
  top: -60px;
  left: -80px;
  width: 320px;
  height: 220px;
  background: radial-gradient(circle, var(--accent-soft) 0%, transparent 66%);
  pointer-events: none;
}

.forum-head {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
}

.forum-sub {
  position: relative;
  color: var(--text-sub);
  font-size: 13.5px;
  margin: 8px 0 20px;
}

/* ---------- 工具栏 ---------- */
.forum-toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 12px;
}

.forum-cats,
#forumNewCats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.forum-cat {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-sub);
  font-size: 13px;
  line-height: 1;
  padding: 8px 15px;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.forum-cat:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.forum-cat.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 4px 14px var(--shadow-glow);
}

.forum-cat.small {
  font-size: 12.5px;
  padding: 6px 13px;
}

.forum-sorts {
  display: flex;
  gap: 2px;
  margin-left: auto;
}

.forum-sort {
  border: none;
  background: transparent;
  color: var(--text-faint);
  font-size: 13px;
  padding: 8px 10px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.forum-sort:hover {
  color: var(--text-main);
}

.forum-sort.is-active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

.forum-publish {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  backdrop-filter: blur(16px) saturate(140%);
  color: var(--accent);
  font-size: 13.5px;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: var(--shadow-card);
  transition: transform 0.18s ease, box-shadow 0.18s ease;
}

.forum-publish:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-card-hover);
}

.forum-publish svg {
  width: 15px;
  height: 15px;
}

/* ---------- 列表卡片 ---------- */
.forum-loading {
  padding: 46px 0;
  text-align: center;
  color: var(--text-faint);
  font-size: 14px;
}

.forum-err {
  color: #e5484d;
}

.forum-empty {
  padding: 70px 0 50px;
  text-align: center;
  color: var(--text-sub);
}

.forum-empty-ic {
  font-size: 40px;
  margin-bottom: 12px;
  opacity: 0.75;
}

.forum-empty p {
  margin: 0 0 20px;
  font-size: 14.5px;
}

.forum-card {
  position: relative;
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 17px 20px 15px;
  margin-bottom: 14px;
  cursor: pointer;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.forum-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card-hover);
}

.forum-card.is-pinned {
  border-left: 3px solid var(--accent);
}

.forum-card-top {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 9px;
}

.forum-badge {
  font-size: 11.5px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--bg-hover-tint);
  color: var(--text-sub);
}

.forum-badge.pin {
  background: var(--accent-soft);
  color: var(--accent);
}

.forum-badge.cat-公告 {
  background: rgba(232, 72, 85, 0.12);
  color: #e5484d;
}

.forum-badge.cat-资源 {
  background: rgba(31, 158, 111, 0.12);
  color: #1f9e6f;
}

.forum-badge.cat-分享 {
  background: var(--accent-soft);
  color: var(--accent);
}

.forum-card-title {
  font-size: 15.5px;
  font-weight: 650;
  line-height: 1.5;
  margin: 0 0 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.forum-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-faint);
  font-size: 12.5px;
}

.forum-author {
  font-weight: 550;
  color: var(--text-sub);
}

.forum-time {
  color: var(--text-faint);
}

.forum-att-ics {
  display: inline-flex;
  gap: 4px;
}

.forum-att-ic {
  width: 17px;
  height: 17px;
  line-height: 17px;
  text-align: center;
  font-size: 10px;
  border-radius: 5px;
  background: var(--bg-hover-tint);
}

.forum-stats {
  margin-left: auto;
  display: inline-flex;
  gap: 12px;
}

.forum-stat {
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

/* ---------- 详情 ---------- */
.forum-detail-back {
  margin: 4px 0 18px;
}

.forum-detail-back a {
  color: var(--text-sub);
  font-size: 13.5px;
  text-decoration: none;
  transition: color 0.18s ease;
}

.forum-detail-back a:hover {
  color: var(--accent);
}

.forum-detail-card {
  background: var(--bg-glass);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  padding: 24px 26px 20px;
}

.forum-detail-id {
  margin-left: auto;
  color: var(--text-faint);
  font-size: 12px;
}

.forum-detail-title {
  font-size: 22px;
  font-weight: 720;
  line-height: 1.4;
  margin: 10px 0 8px;
}

.forum-detail-by {
  color: var(--text-sub);
  font-size: 13px;
  margin-bottom: 18px;
}

.forum-detail-content {
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-main);
  word-break: break-word;
}

.forum-detail-content h1,
.forum-detail-content h2,
.forum-detail-content h3 {
  font-size: 16.5px;
  font-weight: 700;
  margin: 18px 0 8px;
  line-height: 1.5;
}

.forum-detail-content p {
  margin: 0 0 10px;
}

.forum-detail-content .md-li {
  margin: 2px 0;
  padding-left: 4px;
}

.forum-detail-content code {
  font-family: "Cascadia Code", Consolas, monospace;
  font-size: 0.88em;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1px 6px;
}

.forum-detail-content pre {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.6;
  margin: 10px 0;
}

.forum-detail-content pre code {
  border: none;
  background: none;
  padding: 0;
}

.forum-detail-content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.forum-detail-content a:hover {
  border-bottom-color: var(--accent);
}

/* ---------- 附件 ---------- */
.forum-att-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 18px 0 4px;
}

.forum-att {
  display: flex;
  flex-direction: column;
  gap: 10px;
  border: 1px solid var(--border);
  background: var(--bg-hover-tint);
  border-radius: var(--radius-sm);
  padding: 13px 15px;
}

.forum-att-head {
  display: flex;
  align-items: center;
  gap: 10px;
}

.forum-att-glyph {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  border-radius: 10px;
  background: var(--accent-soft);
  color: var(--accent);
}

.forum-att-name {
  font-size: 13.5px;
  font-weight: 550;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.forum-att-name a {
  color: var(--accent);
  text-decoration: none;
}

.forum-att-size {
  margin-left: 8px;
  font-size: 12px;
  font-weight: 400;
  color: var(--text-faint);
}

.forum-att audio,
.forum-att video {
  width: 100%;
  border-radius: 8px;
  display: block;
}

.forum-att video {
  max-height: 300px;
  background: #000;
}

/* ---------- 操作行 ---------- */
.forum-detail-ops {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.forum-like {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-sub);
  font-size: 13.5px;
  padding: 8px 16px;
  border-radius: 999px;
  cursor: pointer;
  transition: color 0.18s ease, border-color 0.18s ease, transform 0.12s ease;
}

.forum-like:hover {
  border-color: #e5484d;
  color: #e5484d;
}

.forum-like:active {
  transform: scale(0.94);
}

.forum-like .forum-like-heart {
  font-size: 15px;
}

.forum-like.is-liked {
  background: rgba(229, 72, 77, 0.1);
  border-color: #e5484d;
  color: #e5484d;
}

.forum-ghost {
  border: none;
  background: transparent;
  color: var(--text-sub);
  font-size: 13px;
  padding: 8px 10px;
  border-radius: 8px;
  cursor: pointer;
  transition: color 0.18s ease, background 0.18s ease;
}

.forum-ghost:hover {
  background: var(--bg-hover-tint);
  color: var(--text-main);
}

.forum-ghost.danger:hover {
  color: #e5484d;
  background: rgba(229, 72, 77, 0.08);
}

/* ---------- 回复 ---------- */
.forum-replies {
  margin-top: 16px;
}

.forum-replies-head {
  font-size: 13.5px;
  font-weight: 650;
  color: var(--text-sub);
  padding: 6px 2px 10px;
}

.forum-reply {
  display: flex;
  gap: 12px;
  padding: 14px 2px;
  border-top: 1px solid var(--border);
}

.forum-reply-floor {
  flex: 0 0 auto;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-faint);
  margin-top: 3px;
}

.forum-reply-main {
  flex: 1;
  min-width: 0;
}

.forum-reply-by {
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 4px;
}

.forum-reply-by .forum-time {
  font-weight: 400;
  margin-left: 8px;
}

.forum-reply-content {
  font-size: 14px;
  line-height: 1.75;
  word-break: break-word;
}

.forum-reply-content p {
  margin: 0 0 6px;
}

.forum-reply-content p:last-child {
  margin-bottom: 0;
}

.forum-reply .forum-ghost {
  flex: 0 0 auto;
  align-self: flex-start;
  padding: 4px 8px;
  font-size: 12px;
}

/* ---------- 回复框 ---------- */
.forum-reply-box {
  display: flex;
  gap: 10px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.forum-reply-box textarea {
  flex: 1;
  min-height: 44px;
  resize: vertical;
  max-height: 160px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-main);
  font-size: 14px;
  line-height: 1.6;
  padding: 10px 13px;
  outline: none;
  font-family: inherit;
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

.forum-reply-box textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.forum-reply-box .primary-btn {
  align-self: flex-end;
  flex: 0 0 auto;
}

/* ---------- 发帖浮层（居中弹窗，覆盖 .modal 抽屉式） ---------- */
#forumModal {
  justify-content: center;
  align-items: center;
  background: var(--overlay);
}

#forumModal .forum-modal-card {
  width: min(620px, calc(100vw - 32px));
  max-width: none;
  height: auto;
  max-height: 88vh;
  overflow-y: auto;
  background: var(--glass-menu);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: 0 30px 80px rgba(15, 15, 15, 0.28);
  margin-right: 0;
  transform: translateY(14px) scale(0.985);
  transition: transform 0.28s cubic-bezier(0.2, 0.8, 0.2, 1);
}

#forumModal.open .forum-modal-card {
  transform: translateY(0) scale(1);
}

.forum-modal-body {
  padding: 18px 24px;
  display: flex;
  flex-direction: column;
  gap: 13px;
}

.forum-f-input {
  border: none;
  border-bottom: 1.5px solid var(--border);
  background: transparent;
  color: var(--text-main);
  font-size: 16px;
  font-weight: 600;
  padding: 9px 2px;
  outline: none;
  font-family: inherit;
  transition: border-color 0.18s ease;
}

.forum-f-input:focus {
  border-bottom-color: var(--accent);
}

.forum-f-input::placeholder {
  color: var(--text-placeholder);
  font-weight: 400;
}

.forum-f-text {
  border: none;
  border-bottom: 1.5px solid var(--border);
  background: transparent;
  color: var(--text-main);
  font-size: 14px;
  line-height: 1.7;
  padding: 8px 2px;
  resize: vertical;
  min-height: 110px;
  outline: none;
  font-family: inherit;
  transition: border-color 0.18s ease;
}

.forum-f-text:focus {
  border-bottom-color: var(--accent);
}

.forum-drop {
  border: 1.5px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 22px 14px;
  text-align: center;
  color: var(--text-sub);
  cursor: pointer;
  transition: border-color 0.18s ease, background 0.18s ease;
}

.forum-drop:hover,
.forum-drop.is-over {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.forum-drop svg {
  width: 26px;
  height: 26px;
  margin-bottom: 8px;
  opacity: 0.7;
}

.forum-drop span {
  display: block;
  font-size: 12.5px;
}

.forum-att-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-hover-tint);
}

.forum-att-row .forum-att-glyph {
  width: 28px;
  height: 28px;
  font-size: 12px;
  border-radius: 8px;
}

.forum-att-row .forum-att-name {
  flex: 1;
  font-size: 13px;
}

.forum-att-status {
  font-size: 12px;
  color: var(--text-faint);
  white-space: nowrap;
}

.forum-att-status.is-err {
  color: #e5484d;
}

.forum-att-row .forum-ghost {
  padding: 4px 8px;
  font-size: 12px;
}

.forum-modal-foot {
  padding: 14px 24px 18px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-top: 1px solid var(--glass-border);
}

.forum-modal-foot .admin-hint {
  flex: 1;
  color: #e5484d;
  font-size: 12.5px;
  min-height: 1em;
}

/* ---------- 未登录客人视图 ---------- */
.forum-guest {
  max-width: 380px;
  margin: 72px auto 0;
  text-align: center;
  animation: guestIn 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.forum-guest-ic {
  width: 56px;
  height: 56px;
  margin: 0 auto 14px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: var(--text-faint);
  background: var(--bg-glass);
  border: 1px solid var(--glass-border);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
}

.forum-guest p {
  font-size: 15px;
  color: var(--text-sub);
  margin: 0 0 18px;
}

.forum-guest-actions {
  display: flex;
  justify-content: center;
  gap: 10px;
}

.forum-guest .forum-publish {
  display: inline-flex;
  text-decoration: none;
}

@keyframes guestIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

/* ---------- toast ---------- */
.forum-toast {
  position: fixed;
  left: 50%;
  bottom: 34px;
  transform: translateX(-50%) translateY(10px);
  z-index: 500;
  background: var(--glass-menu);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  backdrop-filter: blur(18px) saturate(140%);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  font-size: 13.5px;
  padding: 10px 20px;
  border-radius: 999px;
  box-shadow: var(--shadow-card-hover);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.22s ease, transform 0.22s ease;
}

.forum-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---------- 响应式 ---------- */
@media (max-width: 560px) {
  .forum-page {
    padding: 26px 16px 80px;
  }
  .forum-sorts {
    margin-left: 0;
  }
  .forum-detail-title {
    font-size: 18px;
  }
  .forum-detail-card {
    padding: 18px 16px 16px;
  }
}