/* ========================================
   认证系统 + 评论区 样式
   ======================================== */

/* ===== 文字头像 ===== */
.user-avatar {
  border-radius: 50%; display: inline-flex; align-items: center; justify-content: center;
  font-weight: 700; color: #fff; flex-shrink: 0; letter-spacing: 0;
  text-shadow: 0 1px 2px rgba(0,0,0,0.4);
  box-shadow: 0 0 0 2px rgba(255,255,255,0.08);
}

/* ===== 导航栏用户区域 ===== */
.nav-user-area {
  display: flex; align-items: center; gap: 8px; position: relative;
}
.nav-auth-btn {
  padding: 6px 14px; border-radius: 6px; font-size: 0.85rem; cursor: pointer;
  border: 1px solid var(--border-color); background: transparent;
  color: var(--text-secondary); font-family: inherit; transition: all 0.3s;
}
.nav-auth-btn:hover { color: var(--text-primary); border-color: rgba(204,34,51,0.4); background: rgba(204,34,51,0.08); }
.nav-auth-btn--primary {
  background: rgba(204,34,51,0.15); border-color: rgba(204,34,51,0.4); color: var(--accent-red);
}
.nav-auth-btn--primary:hover { background: rgba(204,34,51,0.25); box-shadow: 0 0 12px rgba(204,34,51,0.2); }

.nav-user-info {
  display: flex; align-items: center; gap: 8px; cursor: pointer;
  padding: 4px 10px; border-radius: 8px; transition: all 0.3s;
  border: 1px solid transparent;
}
.nav-user-info:hover { background: rgba(255,255,255,0.05); border-color: var(--border-color); }
.nav-username { font-size: 0.88rem; color: var(--text-primary); max-width: 80px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-admin-badge {
  font-size: 0.7rem; padding: 1px 6px; background: rgba(204,34,51,0.2);
  border: 1px solid rgba(204,34,51,0.4); border-radius: 8px; color: var(--accent-red);
}
.nav-dropdown-arrow { font-size: 0.75rem; color: var(--text-dim); transition: transform 0.3s; }

.nav-user-dropdown {
  position: absolute; top: calc(100% + 8px); right: 0; min-width: 180px;
  background: rgba(18,18,26,0.98); border: 1px solid var(--border-color);
  border-radius: 10px; box-shadow: 0 8px 32px rgba(0,0,0,0.5), 0 0 20px rgba(204,34,51,0.05);
  overflow: hidden; opacity: 0; transform: translateY(-8px); pointer-events: none;
  transition: all 0.25s ease; z-index: 2000;
}
.nav-user-dropdown.open { opacity: 1; transform: translateY(0); pointer-events: all; }
.nav-dropdown-header {
  display: flex; align-items: center; gap: 10px; padding: 14px 16px;
  border-bottom: 1px solid var(--border-color); background: rgba(255,255,255,0.02);
}
.nav-dropdown-name { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); }
.nav-dropdown-role { font-size: 0.75rem; color: var(--text-dim); margin-top: 2px; }
.nav-dropdown-item {
  display: block; width: 100%; padding: 10px 16px; font-size: 0.88rem;
  color: var(--text-secondary); text-decoration: none; transition: all 0.2s;
  background: transparent; border: none; cursor: pointer; font-family: inherit; text-align: left;
}
.nav-dropdown-item:hover { background: rgba(255,255,255,0.04); color: var(--text-primary); }
.nav-dropdown-logout { color: var(--accent-red) !important; }
.nav-dropdown-logout:hover { background: rgba(204,34,51,0.1) !important; }

/* ===== 认证模态框 ===== */
.auth-modal-overlay {
  position: fixed; inset: 0; background: rgba(0,0,0,0.75); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px);
  z-index: 9999; display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none; transition: opacity 0.3s;
}
.auth-modal-overlay.open { opacity: 1; pointer-events: all; }
.auth-modal-overlay.open .auth-modal { transform: scale(1) translateY(0); }
.auth-modal {
  background: var(--bg-secondary); border: 1px solid var(--border-color);
  border-radius: 16px; padding: 32px; width: 100%; max-width: 400px; position: relative;
  box-shadow: 0 20px 60px rgba(0,0,0,0.6), 0 0 40px rgba(204,34,51,0.08);
  transform: scale(0.95) translateY(10px); transition: transform 0.3s;
}
.auth-modal-close {
  position: absolute; top: 16px; right: 16px; background: transparent; border: none;
  color: var(--text-dim); font-size: 1.1rem; cursor: pointer; padding: 4px 8px;
  border-radius: 4px; transition: all 0.2s; font-family: inherit;
}
.auth-modal-close:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); }

.auth-tabs {
  display: flex; gap: 0; margin-bottom: 28px;
  border-bottom: 1px solid var(--border-color);
}
.auth-tab {
  flex: 1; padding: 10px; background: transparent; border: none;
  color: var(--text-secondary); font-size: 1rem; cursor: pointer; font-family: inherit;
  border-bottom: 2px solid transparent; transition: all 0.3s; letter-spacing: 2px;
}
.auth-tab:hover { color: var(--text-primary); }
.auth-tab.active { color: var(--accent-red); border-bottom-color: var(--accent-red); }

.auth-form { display: none; }
.auth-form.active { display: block; }

.auth-field { margin-bottom: 18px; }
.auth-field label { display: block; font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 6px; }
.auth-field input {
  width: 100%; padding: 10px 14px; background: var(--bg-tertiary);
  border: 1px solid var(--border-color); border-radius: 8px;
  color: var(--text-primary); font-size: 0.95rem; font-family: inherit;
  outline: none; transition: all 0.3s;
}
.auth-field input:focus { border-color: var(--accent-red); box-shadow: 0 0 0 3px rgba(204,34,51,0.1); }

.auth-error { min-height: 20px; font-size: 0.85rem; color: var(--accent-red); margin-bottom: 12px; }

.auth-submit {
  width: 100%; padding: 12px; background: var(--accent-red); border: none;
  border-radius: 8px; color: #fff; font-size: 1rem; font-family: inherit;
  cursor: pointer; letter-spacing: 3px; transition: all 0.3s;
  box-shadow: 0 4px 16px rgba(204,34,51,0.3);
}
.auth-submit:hover { background: var(--accent-glow); box-shadow: 0 4px 24px rgba(204,34,51,0.5); transform: translateY(-1px); }
.auth-submit:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

/* ===== Toast 提示 ===== */
.auth-toast {
  position: fixed; bottom: 32px; left: 50%; transform: translateX(-50%) translateY(20px);
  background: rgba(26,26,46,0.95); border: 1px solid var(--border-color);
  border-radius: 8px; padding: 12px 24px; color: var(--text-primary);
  font-size: 0.9rem; z-index: 99999; opacity: 0; transition: all 0.4s ease;
  box-shadow: 0 8px 32px rgba(0,0,0,0.4); white-space: nowrap;
}
.auth-toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }
.auth-toast--error { border-color: rgba(204,34,51,0.5); color: var(--accent-red); }

/* ===== 评论区 ===== */
.comment-section {
  margin-top: 48px; padding-top: 32px;
  border-top: 1px solid var(--border-color);
}
.comment-section-title {
  display: flex; align-items: center; gap: 12px; margin-bottom: 24px;
  font-size: 1.1rem; color: var(--text-primary); font-weight: 600;
}
.comment-section-sub { font-size: 0.8rem; color: var(--text-dim); font-weight: 400; }

.comment-input-area {
  display: flex; gap: 12px; margin-bottom: 28px;
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--card-radius); padding: 16px;
}
.comment-input-avatar { flex-shrink: 0; padding-top: 2px; }
.comment-input-wrap { flex: 1; }
.comment-textarea {
  width: 100%; background: var(--bg-tertiary); border: 1px solid var(--border-color);
  border-radius: 8px; padding: 10px 14px; color: var(--text-primary);
  font-size: 0.9rem; font-family: inherit; resize: vertical; outline: none;
  transition: border-color 0.3s; line-height: 1.6;
}
.comment-textarea:focus { border-color: var(--accent-red); box-shadow: 0 0 0 3px rgba(204,34,51,0.08); }
.comment-input-footer {
  display: flex; align-items: center; justify-content: space-between; margin-top: 10px;
}
.comment-char-count { font-size: 0.78rem; color: var(--text-dim); }
.comment-submit-btn {
  padding: 7px 20px; background: var(--accent-red); border: none; border-radius: 6px;
  color: #fff; font-size: 0.88rem; cursor: pointer; font-family: inherit;
  transition: all 0.3s; box-shadow: 0 2px 8px rgba(204,34,51,0.3);
}
.comment-submit-btn:hover { background: var(--accent-glow); transform: translateY(-1px); }
.comment-submit-btn:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.comment-login-tip {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  padding: 16px 20px; background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--card-radius); margin-bottom: 24px; color: var(--text-secondary); font-size: 0.9rem;
}
.comment-login-btn {
  padding: 6px 16px; background: var(--accent-red); border: none; border-radius: 6px;
  color: #fff; font-size: 0.85rem; cursor: pointer; font-family: inherit; transition: all 0.3s;
}
.comment-login-btn:hover { background: var(--accent-glow); }
.comment-login-btn--outline {
  background: transparent; border: 1px solid rgba(204,34,51,0.4); color: var(--accent-red);
}
.comment-login-btn--outline:hover { background: rgba(204,34,51,0.1); }

.comment-list { display: flex; flex-direction: column; gap: 16px; }
.comment-item {
  display: flex; gap: 12px; padding: 16px;
  background: var(--bg-card); border: 1px solid var(--border-color);
  border-radius: var(--card-radius); transition: all 0.3s;
}
.comment-item:hover { border-color: rgba(204,34,51,0.2); }
.comment-avatar { flex-shrink: 0; }
.comment-body { flex: 1; min-width: 0; }
.comment-meta {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 8px;
}
.comment-username { font-size: 0.9rem; font-weight: 600; color: var(--text-primary); }
.comment-admin-badge {
  font-size: 0.7rem; padding: 1px 6px; background: rgba(204,34,51,0.15);
  border: 1px solid rgba(204,34,51,0.3); border-radius: 8px; color: var(--accent-red);
}
.comment-page-tag {
  font-size: 0.75rem; padding: 1px 8px; background: rgba(255,255,255,0.05);
  border: 1px solid var(--border-color); border-radius: 8px; color: var(--text-dim);
}
.comment-time { font-size: 0.78rem; color: var(--text-dim); margin-left: auto; }
.comment-delete-btn {
  font-size: 0.75rem; color: var(--text-dim); background: transparent; border: none;
  cursor: pointer; padding: 2px 6px; border-radius: 4px; font-family: inherit; transition: all 0.2s;
}
.comment-delete-btn:hover { color: var(--accent-red); background: rgba(204,34,51,0.1); }
.comment-content { font-size: 0.9rem; color: var(--text-primary); line-height: 1.7; word-break: break-word; }
.comment-loading, .comment-empty {
  text-align: center; padding: 32px; color: var(--text-dim); font-size: 0.9rem;
}

/* ===== 回复功能 ===== */
.comment-actions {
  display: flex; align-items: center; gap: 8px; margin-top: 8px;
}
.comment-reply-btn {
  font-size: 0.78rem; color: var(--text-dim); background: transparent; border: none;
  cursor: pointer; padding: 2px 8px; border-radius: 4px; font-family: inherit; transition: all 0.2s;
}
.comment-reply-btn:hover { color: var(--accent-red); background: rgba(204,34,51,0.08); }

.comment-replies {
  margin-top: 12px; display: flex; flex-direction: column; gap: 10px;
  padding-left: 16px; border-left: 2px solid rgba(255,255,255,0.06);
}
.comment-reply-item {
  display: flex; gap: 10px; padding: 10px 12px;
  background: rgba(255,255,255,0.02); border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.04); transition: all 0.2s;
}
.comment-reply-item:hover { border-color: rgba(204,34,51,0.15); background: rgba(204,34,51,0.03); }

.comment-reply-box {
  margin-top: 12px;
}
.reply-input-wrap {
  background: var(--bg-tertiary); border: 1px solid var(--border-color);
  border-radius: 8px; padding: 10px 12px;
}
.reply-textarea { rows: 2; min-height: 60px; }
.comment-cancel-reply-btn {
  padding: 6px 14px; background: transparent; border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px; color: var(--text-secondary); font-size: 0.85rem;
  cursor: pointer; font-family: inherit; transition: all 0.2s;
}
.comment-cancel-reply-btn:hover { color: var(--text-primary); border-color: rgba(255,255,255,0.2); }

/* ===== 点赞 / 不认同 ===== */
.vote-btn {
  font-size: 0.78rem; color: var(--text-dim); background: transparent; border: none;
  cursor: pointer; padding: 3px 10px; border-radius: 12px; font-family: inherit;
  transition: all 0.2s; border: 1px solid transparent; line-height: 1.4;
}
.vote-btn:hover { color: var(--text-primary); background: rgba(255,255,255,0.06); border-color: rgba(255,255,255,0.1); }
.vote-btn--active { color: #4a9eff !important; background: rgba(74,158,255,0.1) !important; border-color: rgba(74,158,255,0.3) !important; }
.vote-btn--dislike-active { color: var(--accent-red) !important; background: rgba(204,34,51,0.1) !important; border-color: rgba(204,34,51,0.3) !important; }
span.vote-btn { cursor: default; }

/* ===== 回复中的 @ 提及 ===== */
.reply-at {
  color: #4a9eff; font-size: 0.85rem; margin-right: 2px;
}

/* ===== 热门评论榜 ===== */
.hot-comments-section {
  margin-bottom: 40px; padding: 20px 24px;
  background: linear-gradient(135deg, rgba(204,34,51,0.04), rgba(139,0,0,0.06));
  border: 1px solid rgba(204,34,51,0.15); border-radius: var(--card-radius);
}
.hot-comments-list { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }
.hot-comment-item {
  display: flex; align-items: flex-start; gap: 12px; padding: 12px 14px;
  background: rgba(255,255,255,0.02); border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.04); transition: all 0.2s;
}
.hot-comment-item:hover { background: rgba(255,255,255,0.04); border-color: rgba(204,34,51,0.15); }
.hot-rank {
  font-size: 0.85rem; font-weight: 700; min-width: 24px; text-align: center;
  padding: 2px 0; flex-shrink: 0; margin-top: 2px;
}
.hot-rank-1 { color: #ffd700; text-shadow: 0 0 8px rgba(255,215,0,0.5); }
.hot-rank-2 { color: #c0c0c0; }
.hot-rank-3 { color: #cd7f32; }
.hot-rank-other { color: var(--text-dim); }
.hot-comment-body { flex: 1; min-width: 0; }
.hot-comment-meta {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 6px;
}
.hot-like-count {
  font-size: 0.78rem; color: #4a9eff; padding: 1px 8px;
  background: rgba(74,158,255,0.1); border-radius: 10px; border: 1px solid rgba(74,158,255,0.2);
}
.hot-comment-content {
  font-size: 0.88rem; color: var(--text-primary); line-height: 1.6;
  word-break: break-word; overflow: hidden;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
}

/* ===== 管理后台 ===== */
.admin-table {
  width: 100%; border-collapse: collapse; font-size: 0.9rem;
}
.admin-table th {
  padding: 10px 16px; text-align: left; color: var(--text-secondary);
  border-bottom: 1px solid var(--border-color); font-weight: 600;
}
.admin-table td {
  padding: 12px 16px; border-bottom: 1px solid rgba(255,255,255,0.03);
  color: var(--text-primary);
}
.admin-table tr:hover td { background: rgba(255,255,255,0.02); }
.admin-del-btn {
  padding: 4px 12px; background: rgba(204,34,51,0.15); border: 1px solid rgba(204,34,51,0.3);
  border-radius: 4px; color: var(--accent-red); font-size: 0.8rem; cursor: pointer;
  font-family: inherit; transition: all 0.2s;
}
.admin-del-btn:hover { background: rgba(204,34,51,0.3); }

/* ===== 响应式补充 ===== */
@media (max-width: 768px) {
  .nav-user-area { gap: 4px; }
  .nav-auth-btn { padding: 5px 10px; font-size: 0.8rem; }
  .nav-username { max-width: 60px; }
  .auth-modal { margin: 16px; padding: 24px; }
  .comment-input-area { flex-direction: column; }
  .comment-meta { gap: 6px; }
  .comment-time { margin-left: 0; }
}

/* ===== 注册提示框 ===== */
.auth-notice {
  padding: 10px 14px; border-radius: 8px; font-size: 0.83rem;
  line-height: 1.6; margin-bottom: 14px;
}
.auth-notice--warning {
  background: rgba(204,34,51,0.08); border: 1px solid rgba(204,34,51,0.25);
  color: var(--text-secondary);
}
.auth-notice--warning strong { color: var(--accent-red); }
.auth-notice--info {
  background: rgba(74,158,255,0.08); border: 1px solid rgba(74,158,255,0.2);
  color: var(--text-secondary);
}
.auth-notice--info strong { color: #4a9eff; }

/* ===== 禁用输入框 ===== */
.auth-field input:disabled {
  opacity: 0.4; cursor: not-allowed;
}