/* ── Подсветка чата при новом входящем сообщении ── */
    @keyframes chatUnreadPulse {
      0%   { background-color: transparent; }
      30%  { background-color: color-mix(in srgb, var(--accent-color) 18%, transparent); }
      60%  { background-color: transparent; }
      80%  { background-color: color-mix(in srgb, var(--accent-color) 10%, transparent); }
      100% { background-color: color-mix(in srgb, var(--accent-color) 10%, transparent); }
    }
    .chat-unread-flash {
      animation: chatUnreadPulse 1.2s ease-out forwards;
      background-color: color-mix(in srgb, var(--accent-color) 10%, transparent);
    }
    .chat-unread-flash:hover {
      background-color: var(--bg-item-hover) !important;
    }