/* Tutorial article layout primitives (dark colors handled by redesign.css) */

.tutorial-article-container {
  display: grid;
  grid-template-columns: 250px 1fr;
  gap: 40px;
  margin: 40px 0;
}

.tutorial-sidebar {
  position: sticky;
  top: 100px;
  height: fit-content;
}

.toc-box {
  border-radius: var(--radius);
  padding: 25px;
  max-height: 600px;
  overflow-y: auto;
}

.toc-box ul {
  list-style: none;
}

.toc-box li {
  margin-bottom: 10px;
  font-size: 13px;
}

.toc-box a {
  text-decoration: none;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 0;
  transition: var(--transition-fast);
}

.tutorial-content {
  border-radius: var(--radius);
  padding: 40px;
}

.tutorial-meta {
  display: flex;
  gap: 25px;
  padding-bottom: 25px;
  border-bottom: 1px solid rgba(255,255,255,0.10);
  margin-bottom: 35px;
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}

.difficulty-badge {
  display: inline-block;
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 750;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.tutorial-body h2 {
  font-size: 28px;
  font-weight: 800;
  margin-top: 40px;
  margin-bottom: 20px;
  border-left: 4px solid rgba(255,255,255,0.18);
  padding-left: 15px;
}

.tutorial-body h2:first-child {
  margin-top: 0;
}

.tutorial-body h3 {
  font-size: 20px;
  font-weight: 700;
  margin-top: 28px;
  margin-bottom: 16px;
}

.tutorial-body h4 {
  font-size: 16px;
  font-weight: 700;
  margin-top: 20px;
  margin-bottom: 12px;
}

.tutorial-body p {
  font-size: 15px;
  line-height: 1.85;
  margin-bottom: 18px;
}

.tutorial-body ul,
.tutorial-body ol {
  margin-left: 25px;
  margin-bottom: 20px;
}

.tutorial-body li {
  font-size: 15px;
  line-height: 1.85;
  margin-bottom: 12px;
}

.code-block {
  padding: 20px;
  border-radius: 12px;
  overflow-x: auto;
  margin: 20px 0;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 13px;
  line-height: 1.6;
  border: 1px solid rgba(255,255,255,0.10);
}

.info-box,
.key-concept {
  padding: 20px;
  border-radius: 12px;
  margin: 25px 0;
  border: 1px solid rgba(255,255,255,0.10);
}

.info-box strong,
.key-concept strong {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
}

.tutorial-table {
  width: 100%;
  border-collapse: collapse;
  margin: 25px 0;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255,255,255,0.10);
}

.tutorial-table th,
.tutorial-table td {
  padding: 15px;
  text-align: left;
  font-size: 14px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.tutorial-table tr:last-child td {
  border-bottom: none;
}

.related-tutorials {
  border-radius: var(--radius);
  padding: 30px;
  margin-top: 40px;
  border: 1px solid rgba(255,255,255,0.10);
}

.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}

.related-card {
  padding: 20px;
  border-radius: 12px;
  border: 1px solid rgba(255,255,255,0.10);
  transition: var(--transition-fast);
  text-decoration: none;
  display: block;
}

.related-card:hover {
  transform: translateY(-3px);
}

.related-card h4 {
  font-size: 16px;
  font-weight: 750;
  margin-bottom: 8px;
}

.related-card p {
  font-size: 13px;
  margin-bottom: 12px;
}

.related-card .read-more {
  font-weight: 750;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

@media (max-width: 1024px) {
  .tutorial-article-container {
    grid-template-columns: 1fr;
    gap: 30px;
  }

  .tutorial-sidebar {
    position: static;
  }

  .toc-box {
    max-height: none;
  }
}

@media (max-width: 768px) {
  .tutorial-content {
    padding: 18px 16px;
  }

  .form-group input,
  .form-group select,
  .form-group textarea {
    font-size: 16px;
  }

  .tutorial-meta {
    flex-direction: column;
    gap: 15px;
  }

  .tutorial-body h2 {
    font-size: 24px;
  }

  .tutorial-body h3 {
    font-size: 18px;
  }

  .tutorial-table th,
  .tutorial-table td {
    padding: 10px;
  }

  .related-grid {
    grid-template-columns: 1fr;
  }
}