dtv/app/assets/styles/tiptap.scss

/* Основные стили для контейнера редактора */
.ProseMirror {
  min-height: 260px;
  padding: 48px 24px;
  border: 1px solid #d0d7de;
  border-radius: 8px;
  background: #fff;
  color: #24292f;
  font-size: 1rem;
  line-height: 1.8;
  outline: none;
  transition: border-color .15s;
  word-break: break-word;
  font-family: inherit;
}

/* Состояния фокуса */
.ProseMirror-focused {
  border-color: #6366f1;
  box-shadow: 0 0 0 2px #e0e7ff;
}

/* Стилизация параграфа и базового текста */
.ProseMirror p {
  margin: 1em 0;
}
.ProseMirror strong { font-weight: 700; }
.ProseMirror em { font-style: italic; }
.ProseMirror u { text-decoration: underline; }
.ProseMirror s { text-decoration: line-through; }
.ProseMirror code {
  background: #f6f8fa;
  color: #d63384;
  border-radius: 4px;
  font-size: 0.95em;
  font-family: 'JetBrainsMono', 'Fira Mono', 'Menlo', monospace;
  padding: 0.1em 0.3em;
}

/* Заголовки */
.ProseMirror h1,
.ProseMirror h2,
.ProseMirror h3,
.ProseMirror h4,
.ProseMirror h5,
.ProseMirror h6 {
  line-height: 1.2;
  font-weight: 700;
  margin: 1.6em 0 0.8em;
}
.ProseMirror h1 { font-size: 2em;   }
.ProseMirror h2 { font-size: 1.6em; }
.ProseMirror h3 { font-size: 1.34em;}
.ProseMirror h4 { font-size: 1.18em;}
.ProseMirror h5 { font-size: 1em;   }
.ProseMirror h6 { font-size: 1em; color: #555; }

/* Списки */
.ProseMirror ul,
.ProseMirror ol {
  margin: 0.8em 0 0.8em 2em;
  padding: 0 0 0 1.2em;
}
.ProseMirror li {
  margin: 0.2em 0;
  padding-left: 0.3em;
}

/* Quote and horizontal rule */
.ProseMirror blockquote {
  color: #6b7280;
  margin: 1.2em 0;
  padding-left: 0;
  font-style: italic;
  border-radius: 0 4px 4px 0;
}

/* Табы и преформат */
.ProseMirror pre {
  background: #282a36;
  color: #f6f8fa;
  padding: 1em;
  border-radius: 6px;
  font-family: 'JetBrainsMono', 'Fira Mono', 'Menlo', monospace;
  overflow-x: auto;
}
.ProseMirror pre code {
  background: unset;
  color: inherit;
  font-size: inherit;
  padding: 0;
}

/* HR */
.ProseMirror hr {
  border: 0;
  border-top: 1px solid #e5e7eb;
  margin: 2em 0;
}

/* Изображения */
.ProseMirror img {
  max-width: 100%;
  border-radius: 4px;
}

/* Ссылки */
.ProseMirror a {
  color: #2563eb;
  text-decoration: underline;
  transition: color .15s;
}
.ProseMirror a:hover {
  color: #1e40af;
}

/* Сброс плэйсхолдера и подсветка выделения */
.ProseMirror-gapcursor {
  display: none;
}
.ProseMirror-selectednode {
  outline: 2px solid #6366f1;
  outline-offset: 1px;
}

/* Стили для невалидных узлов (например, плейсхолдеров или ошибок) */
.ProseMirror .is-invalid {
  background: #ffe4e6;
  color: #be185d;
  padding: 0.1em 0.3em;
  border-radius: 2px;
}

.ProseMirror p.is-editor-empty[data-placeholder]:before,
.ProseMirror h1.is-editor-empty[data-placeholder]:before,
.ProseMirror h2.is-editor-empty[data-placeholder]:before,
.ProseMirror h3.is-editor-empty[data-placeholder]:before{
  content: attr(data-placeholder);
  color: #bdbdbd;
  opacity: 1;
  pointer-events: none;
  padding-left: 106px;
  font-style: normal;

  font-family: SourceSans3, monospace;
  font-weight: 600;
  font-size: 36px;
  line-height: 120%;
}

.ProseMirror p.is-editor-empty[data-placeholder]:before {
  font-family: FuturaPT, sans-serif;
}
.ProseMirror p:nth-of-type(1).is-editor-empty[data-placeholder]:before {
  font-size: 22px;
  font-weight: 500;
}
.ProseMirror p.is-editor-empty[data-placeholder]:before {
  font-size: 20px;
  font-weight: 400;
}

.ProseMirror {
  h1 {
    font-family: SourceSans3, monospace;
    font-size: 24px;
    font-weight: 600;
  }
  p:first-of-type {
    font-family: FuturaPT, monospace;
    font-weight: 500;
    font-size: 18px;
    line-height: 120%;
  }
  p:not(:first-of-type) {
    font-family: FuturaPT, monospace;
    font-weight: 400;
    font-size: 16px;
    line-height: 120%;
  }
}


@media screen and (max-width: 768px) {

  .ProseMirror p.is-editor-empty[data-placeholder]:before,
  .ProseMirror h1.is-editor-empty[data-placeholder]:before,
  .ProseMirror h2.is-editor-empty[data-placeholder]:before,
  .ProseMirror h3.is-editor-empty[data-placeholder]:before{
    padding-left: 0;
    font-size: 24px;
  }
  .ProseMirror p:nth-of-type(1).is-editor-empty[data-placeholder]:before {
    font-size: 18px;
  }
  .ProseMirror p.is-editor-empty[data-placeholder]:before {
    font-size: 16px;
  }
}