.image-preview {
      position: relative;
      width: fit-content;
      max-width: 100%;
      margin-top: 10px;
      padding: 8px;
      border: 1px solid var(--line);
      border-radius: 10px;
      background: var(--bg);
    }
    .image-preview[hidden] {
      display: none;
    }
    .image-preview img {
      display: block;
      max-width: min(300px, 100%);
      max-height: 220px;
      object-fit: contain;
      border-radius: 8px;
    }
    .image-preview button {
      position: absolute;
      top: 4px;
      right: 4px;
      width: 30px;
      min-width: 30px;
      min-height: 30px;
      padding: 0;
      border-radius: 50%;
      background: rgba(0, 0, 0, .72);
      color: white;
      border: 0;
    }
    .paste-hint {
      margin-top: 7px;
      font-size: 12px;
      color: var(--muted);
    }
    .composer {
      display: grid;
      grid-template-columns: 1fr 90px;
      gap: 8px;
      margin-top: 10px;
    }
    @media (max-width: 480px) {
      .composer { grid-template-columns: 1fr 76px; }
    }
    #toast {
      position: fixed;
      left: 50%;
      bottom: 22px;
      transform: translateX(-50%);
      background: rgba(0, 0, 0, .82);
      color: white;
      border-radius: 999px;
      padding: 9px 14px;
      font-size: 13px;
      opacity: 0;
      pointer-events: none;
      transition: opacity .18s ease;
      z-index: 10;
    }
    #toast.show { opacity: 1; }
    .security {
      font-size: 12px;
      color: var(--muted);
      line-height: 1.55;
      margin-top: 10px;
    }