body {
  margin: 0;
  min-height: 100vh;
}

.container {
  width: min(1180px, 94%);
  margin: 0 auto;
}

.ad-wrap {
  text-align: center;
  padding: 8px 0 10px;
}

.hero {
  padding: 1.8rem 0 0.8rem;
}

.hero h1 {
  margin: 0;
  font-size: clamp(1.5rem, 2.8vw, 2.2rem);
}

.hero p {
  margin-top: 0.5rem;
  color: var(--text-secondary);
}

.card {
  border: 1px solid var(--border-color);
  background: var(--card-bg);
  border-radius: 16px;
  padding: 1rem;
  margin-bottom: 1rem;
}

.toolbar {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  margin-bottom: 0.8rem;
}

.btn {
  border: 1px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  padding: 0.58rem 0.88rem;
  font-weight: 600;
}

.btn-secondary {
  background: #1e293b;
  color: #fff;
}

.btn-ghost {
  background: transparent;
  border-color: var(--border-color);
  color: var(--text-primary);
}

.editor-grid {
  display: grid;
  gap: 0.8rem;
  grid-template-columns: repeat(2, minmax(280px, 1fr));
}

.label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.92rem;
  color: var(--text-secondary);
}

textarea {
  width: 100%;
  min-height: 430px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 0.75rem;
  background: #0f172a;
  color: var(--text-primary);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.9rem;
  line-height: 1.45;
  resize: vertical;
}

.preview-output {
  min-height: 430px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 0.85rem;
  background: rgba(15, 23, 42, 0.62);
  overflow: auto;
  line-height: 1.6;
}

.preview-output h1,
.preview-output h2,
.preview-output h3 {
  margin-top: 0.8rem;
  margin-bottom: 0.5rem;
}

.preview-output p,
.preview-output ul,
.preview-output ol,
.preview-output pre,
.preview-output blockquote {
  margin-top: 0.55rem;
  margin-bottom: 0.55rem;
}

.preview-output pre {
  background: #0b1220;
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 0.75rem;
  overflow: auto;
}

.preview-output code {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.88em;
}

.preview-output blockquote {
  border-left: 3px solid #3b82f6;
  padding-left: 0.7rem;
  color: #93c5fd;
}

.preview-output table {
  width: 100%;
  border-collapse: collapse;
}

.preview-output th,
.preview-output td {
  border: 1px solid var(--border-color);
  padding: 0.45rem 0.5rem;
  text-align: left;
}

.preview-output a {
  color: #60a5fa;
}

.empty-preview {
  color: #94a3b8;
}

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

  textarea,
  .preview-output {
    min-height: 320px;
  }
}