.section-box{
  background:#fafafa;
  border:1px solid #eee;
  border-radius:10px;
  padding:18px;
  margin-bottom:18px;
}

/* TOOLBAR */
.toolbar{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin-bottom:15px;
}

.tool-btn{
  padding:10px 14px;
  border:none;
  border-radius:6px;
  background:#0a3d62;
  color:#fff;
  cursor:pointer;
  font-size:13px;
}

/* EDITOR */
.editor-wrap{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px;
}

@media(max-width:900px){
  .editor-wrap{
    grid-template-columns:1fr;
  }
}

.box-title{
  font-size:14px;
  font-weight:bold;
  margin-bottom:10px;
}

/* TEXTAREA */
textarea{
  width:100%;
  height:500px;
  padding:15px;
  border:1px solid #ccc;
  border-radius:8px;
  resize:none;
  font-family:monospace;
  font-size:14px;
  line-height:1.6;
  box-sizing:border-box;
}

/* PREVIEW */
.preview{
  height:500px;
  overflow:auto;
  background:#fff;
  border:1px solid #ddd;
  border-radius:8px;
  padding:20px;
  line-height:1.7;
  word-break:break-word;
}

/* PREVIEW STYLES */
.preview h1{
  font-size:32px;
  margin-top:0;
}

.preview h2{
  font-size:26px;
}

.preview h3{
  font-size:22px;
}

.preview code{
  background:#f1f1f1;
  padding:2px 6px;
  border-radius:4px;
  font-family:monospace;
}

.preview pre{
  background:#111827;
  color:#00ff9d;
  padding:15px;
  border-radius:8px;
  overflow:auto;
}

.preview blockquote{
  border-left:4px solid #0a3d62;
  padding-left:15px;
  color:#555;
  margin-left:0;
}

.preview ul{
  padding-left:20px;
}

.preview a{
  color:#0a3d62;
}

/* BUTTONS */
.btns{
  display:flex;
  justify-content:flex-end;
  gap:10px;
  margin-top:15px;
}

.app{
  padding:12px 20px;
  background:linear-gradient(135deg,#0a3d62,#07517d);
  color:#fff;
  border:none;
  border-radius:4px;
  cursor:pointer;
}

.gray{
  background:#444;
}

.green{
  background:#0f9d58;
}