/* ============================================
   论坛化 UI（用户系统 / 评论 / 发文）— 绿色主题
   与 style.css 共用变量（--accent / --radius-* 等）；
   类名前缀：auth-*（页头用户区）/ lq-*（弹窗与表单）/ user-*（用户中心）
   ============================================ */

/* ---------- 页头用户区 ---------- */
.auth-area {
  position: relative;
  display: flex;
  align-items: center;
  margin-left: 0.25rem;
}

.auth-login-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.42rem 1rem;
  border: 1px solid var(--accent);
  border-radius: 999px;
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease, transform 0.15s ease;
}

.auth-login-btn:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
}

/* 头像（图片或首字母色块） */
.avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  background: linear-gradient(145deg, var(--accent), var(--accent-light));
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
}

.avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.avatar-letter {
  line-height: 1;
}

.auth-user {
  position: relative;
}

.auth-user-trigger {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  padding: 0.25rem 0.6rem 0.25rem 0.3rem;
  border: 1px solid var(--border-light);
  border-radius: 999px;
  background: var(--surface);
  color: var(--text-primary);
  font: inherit;
  cursor: pointer;
  transition: border-color 0.2s ease;
}

.auth-user.is-open .auth-user-trigger {
  border-color: var(--accent);
}

.auth-name {
  max-width: 8rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.9rem;
  font-weight: 500;
}

.auth-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  min-width: 11rem;
  padding: 0.4rem;
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-hover);
  display: none;
  z-index: 60;
}

.auth-user.is-open .auth-menu {
  display: block;
}

.auth-menu a,
.auth-menu button {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 0;
  border-radius: 8px;
  background: none;
  color: var(--text-primary);
  font: inherit;
  font-size: 0.9rem;
  text-decoration: none;
  text-align: left;
  cursor: pointer;
}

.auth-menu a:hover,
.auth-menu button:hover {
  background: var(--accent-soft);
  color: var(--accent);
}

.auth-menu i {
  width: 1rem;
  text-align: center;
  color: var(--accent);
}

/* ---------- 登录 / 注册弹窗 ---------- */
body.lq-modal-open {
  overflow: hidden;
}

.lq-modal {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.2rem;
}

.lq-modal[hidden] {
  display: none;
}

.lq-modal-mask {
  position: absolute;
  inset: 0;
  background: rgba(20, 40, 28, 0.42);
  backdrop-filter: blur(3px);
}

.lq-modal-card {
  position: relative;
  width: min(420px, 100%);
  padding: 1.8rem 1.7rem 1.5rem;
  background: var(--surface);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-hover);
  animation: lqPop 0.18s ease;
}

@keyframes lqPop {
  from { opacity: 0; transform: translateY(10px) scale(0.98); }
  to   { opacity: 1; transform: none; }
}

.lq-modal-close {
  position: absolute;
  top: 0.6rem;
  right: 0.8rem;
  border: 0;
  background: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-secondary);
  cursor: pointer;
}

.lq-modal-close:hover {
  color: var(--accent);
}

.lq-auth-tabs {
  display: flex;
  gap: 0.4rem;
  margin-bottom: 1.2rem;
  padding: 0.3rem;
  background: var(--accent-soft);
  border-radius: 999px;
}

.lq-tab {
  flex: 1;
  padding: 0.5rem;
  border: 0;
  border-radius: 999px;
  background: none;
  font: inherit;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
}

.lq-tab.is-active {
  background: var(--surface);
  color: var(--accent);
  box-shadow: var(--shadow-sm);
}

/* ---------- 表单与按钮 ---------- */
.lq-form {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.lq-form label {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.lq-form input,
.lq-form textarea {
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: #fbfdfb;
  font: inherit;
  color: var(--text-primary);
}

.lq-form input:focus,
.lq-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.08);
}

.lq-btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.72rem 1.2rem;
  border: 0;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: #fff;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease;
}

.lq-btn-primary:hover {
  background: var(--accent-light);
}

.lq-btn-primary:disabled {
  opacity: 0.6;
  cursor: default;
}

.lq-form-msg {
  min-height: 1.2rem;
  margin-top: 0.9rem;
  font-size: 0.85rem;
  text-align: center;
  color: var(--text-secondary);
}

.lq-form-msg.is-ok { color: var(--accent); }
.lq-form-msg.is-error { color: #c0392b; }
.lq-form-msg.is-pending { color: var(--text-secondary); }

/* ============================================
   用户中心
   ============================================ */
.user-page {
  margin-top: 0.5rem;
}

.user-hero {
  display: flex;
  align-items: center;
  gap: 1.3rem;
  padding: 1.8rem 2rem;
  background: linear-gradient(135deg, var(--accent-soft), #f7fdf9);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
}

.user-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  overflow: hidden;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, var(--accent), var(--accent-light));
  color: #fff;
  font-size: 1.8rem;
  font-weight: 600;
}

.user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-head h1 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--accent);
  line-height: 1.2;
}

.user-meta {
  margin-top: 0.35rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.user-bio {
  margin-top: 0.5rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.user-grid {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 1.5rem;
  margin-top: 1.6rem;
}

.user-side {
  align-self: start;
}

.user-nav {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 0.6rem;
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 1rem;
}

.user-nav a {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  transition: background 0.2s ease, color 0.2s ease;
}

.user-nav a i {
  width: 1rem;
  text-align: center;
  color: var(--accent);
}

.user-nav a:hover {
  background: var(--accent-soft);
}

.user-nav a.is-active {
  background: var(--accent);
  color: #fff;
}

.user-nav a.is-active i {
  color: #fff;
}

.user-main {
  min-width: 0;
}

.user-panel {
  padding: 1.8rem;
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
}

.user-panel[hidden] {
  display: none;
}

.user-panel-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--text-primary);
  margin-bottom: 1.2rem;
}

.user-form {
  max-width: 520px;
}

.user-list {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.user-empty {
  color: var(--text-secondary);
  font-size: 0.95rem;
  padding: 1.4rem 0;
  text-align: center;
}

/* 我的文章 / 我的评论 列表项 */
.user-item {
  padding: 0.9rem 1.1rem;
  background: var(--surface-alt, #f6faf7);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm, 10px);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.user-item-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem;
}

.user-item-title {
  color: var(--text-primary);
  font-weight: 600;
  text-decoration: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.user-item-title:hover {
  color: var(--accent);
}

.user-item-text {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  word-break: break-word;
}

.user-item-meta {
  color: var(--text-secondary);
  font-size: 0.8rem;
}

.user-item-del {
  flex-shrink: 0;
  padding: 0.24rem 0.7rem;
  border: 1px solid var(--border-light);
  border-radius: 999px;
  background: transparent;
  color: var(--text-secondary);
  font: inherit;
  font-size: 0.78rem;
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.user-item-del:hover {
  color: #c0392b;
  border-color: #c0392b;
}

/* ---------- 发布文章页 ---------- */
.publish-page {
  max-width: 1460px;
  margin: 0 auto;
}

.publish-head {
  margin-bottom: 1.4rem;
}

.publish-head h1 {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.publish-tip {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.7;
}

.publish-tip a {
  color: var(--accent);
}

.publish-form {
  max-width: none;
  padding: 1.8rem;
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
}

.publish-row {
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: 1rem;
}

.publish-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin: -0.4rem 0 0.6rem;
}

.publish-actions {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  margin-top: 0.4rem;
}

.publish-link {
  margin-left: 0.6rem;
  color: var(--accent);
  text-decoration: none;
}

.publish-link:hover {
  text-decoration: underline;
}

.publish-guest {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  padding: 3rem 2rem;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
}

.publish-guest i {
  font-size: 2.6rem;
  color: var(--accent);
}

.publish-guest h2 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--text-primary);
}

.publish-guest p {
  color: var(--text-secondary);
}

@media (max-width: 720px) {
  .publish-row {
    grid-template-columns: 1fr;
  }
}

.user-guest {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
  padding: 3rem 2rem;
  text-align: center;
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
}

.user-guest i {
  font-size: 2.6rem;
  color: var(--accent);
}

.user-guest h2 {
  font-family: var(--font-serif);
  color: var(--text-primary);
}

.user-guest p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ============================================
   响应式
   ============================================ */
@media (max-width: 900px) {
  .user-grid {
    grid-template-columns: 1fr;
  }

  .user-nav {
    position: static;
    flex-direction: row;
    overflow-x: auto;
  }

  .user-nav a {
    white-space: nowrap;
  }
}

@media (max-width: 600px) {
  .user-hero {
    flex-direction: column;
    text-align: center;
    padding: 1.5rem 1.2rem;
  }

  .auth-name {
    max-width: 4.5rem;
  }

  .auth-menu {
    right: -0.4rem;
  }
}

/* ============================================
   评论区
   ============================================ */
.comments-section {
  margin-top: 2rem;
  padding: 1.8rem;
  background: var(--surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-sm);
}

.comments-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.3rem;
}

.comments-head h2 {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--text-primary);
}

.comments-count {
  font-size: 1rem;
  color: var(--accent);
}

.comments-sort {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.comments-sort button {
  padding: 0.35rem 0.9rem;
  border: 1px solid var(--border-light);
  border-radius: 999px;
  background: var(--surface);
  font: inherit;
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.comments-sort button.is-active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.comments-author {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: 0.4rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  cursor: pointer;
}

.comment-form {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  margin-bottom: 1.6rem;
}

.comment-guest input,
.comment-form textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  background: #fbfdfb;
  font: inherit;
  color: var(--text-primary);
}

.comment-form textarea {
  resize: vertical;
}

.comment-guest input:focus,
.comment-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: #fff;
  box-shadow: 0 0 0 3px rgba(45, 106, 79, 0.08);
}

.comment-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
}

.comment-reply-tip {
  font-size: 0.85rem;
  color: var(--accent);
}

.comment-reply-cancel {
  margin-left: 0.5rem;
  border: 0;
  background: none;
  color: var(--text-secondary);
  font: inherit;
  font-size: 0.85rem;
  text-decoration: underline;
  cursor: pointer;
}

.comment-list {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.comment-item {
  display: flex;
  gap: 0.8rem;
}

.comment-item.is-child {
  margin-left: 2.6rem;
  padding-left: 0.9rem;
  border-left: 2px solid var(--accent-soft);
}

.comment-avatar {
  width: 36px;
  height: 36px;
  font-size: 1rem;
}

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

.comment-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.25rem;
}

.comment-name {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-primary);
}

.comment-badge {
  padding: 0.1rem 0.45rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.68rem;
  font-weight: 600;
}

.comment-badge.is-author {
  background: var(--accent);
  color: #fff;
}

.comment-time {
  font-size: 0.78rem;
  color: var(--text-secondary);
}

.comment-content {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-break: break-word;
}

.comment-bar {
  display: flex;
  gap: 0.4rem;
  margin-top: 0.4rem;
}

.comment-act {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.4rem;
  border: 0;
  border-radius: 6px;
  background: none;
  color: var(--text-secondary);
  font: inherit;
  font-size: 0.82rem;
  cursor: pointer;
}

.comment-act:hover {
  color: var(--accent);
  background: var(--accent-soft);
}

.comment-act.is-liked {
  color: var(--accent);
}

.comment-act.is-danger:hover {
  color: #c0392b;
  background: #fdecea;
}

.comment-empty {
  padding: 1.6rem 0;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.comments-more {
  margin-top: 1.2rem;
  text-align: center;
}

.btn-more {
  padding: 0.5rem 1.4rem;
  border: 1px solid var(--border-light);
  border-radius: 999px;
  background: var(--surface);
  font: inherit;
  font-size: 0.9rem;
  color: var(--accent);
  cursor: pointer;
}

.btn-more:hover {
  background: var(--accent-soft);
}

/* ---------- 标签（详情页 / 列表页） ---------- */
.detail-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.6rem;
  padding-top: 1.2rem;
  border-top: 1px dashed var(--border-light);
}

.detail-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 0.82rem;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease;
}

.detail-tag:hover {
  background: var(--accent);
  color: #fff;
}

.chip-tag {
  font-size: 0.8rem;
}

.filter-tags {
  margin-top: 0.6rem;
}

@media (max-width: 600px) {
  .comments-section {
    padding: 1.3rem 1.1rem;
  }

  .comment-item.is-child {
    margin-left: 1rem;
  }
}