/* ===== Tutorial Page Layout ===== */
.tut-page {
  padding: 100px 0 60px;
  min-height: 100vh;
}
.tut-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
.tut-breadcrumb {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 28px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
}
.tut-breadcrumb a { color: var(--text-dim); }
.tut-breadcrumb a:hover { color: var(--primary); }
.tut-breadcrumb span { color: var(--text); }

.tut-layout {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 40px;
  align-items: start;
}

/* Article */
.tut-article {
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 40px;
}
.tut-article-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 2px solid var(--border);
}
.tut-article-header h1 {
  font-size: 26px;
  line-height: 1.4;
  color: var(--primary);
  margin: 12px 0;
}
.tut-meta-line {
  font-size: 13px;
  color: var(--text-dim);
}

.tut-content {
  font-size: 15px;
  line-height: 1.9;
  color: var(--text);
}
.tut-content h3 {
  font-size: 19px;
  color: var(--accent);
  margin: 32px 0 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border);
}
.tut-content h4 {
  font-size: 16px;
  color: var(--primary);
  margin: 22px 0 10px;
}
.tut-content p { margin-bottom: 14px; }
.tut-content ul, .tut-content ol {
  margin: 10px 0 16px 22px;
}
.tut-content li { margin-bottom: 8px; }
.tut-content a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.tut-content a:hover { color: var(--primary); }
.tut-content code {
  background: var(--bg-alt);
  padding: 2px 8px;
  border-radius: 3px;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 13px;
  color: var(--accent);
}
.tut-content pre {
  background: #151522;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 16px 20px;
  overflow-x: auto;
  margin: 16px 0;
}
.tut-content pre code {
  background: none;
  padding: 0;
  color: var(--text);
  font-size: 13px;
  line-height: 1.6;
}
.tut-content .tip {
  background: rgba(78,205,196,.08);
  border-left: 3px solid var(--accent);
  padding: 14px 18px;
  border-radius: 0 6px 6px 0;
  margin: 18px 0;
}
.tut-content .warning {
  background: rgba(255,217,61,.08);
  border-left: 3px solid var(--warning);
  padding: 14px 18px;
  border-radius: 0 6px 6px 0;
  margin: 18px 0;
}
.tut-content strong { color: var(--text); }

.tut-related {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 2px solid var(--border);
}
.tut-related h4 {
  font-size: 15px;
  color: var(--text-dim);
  margin-bottom: 12px;
}
.tut-related a {
  display: inline-block;
  margin: 0 16px 10px 0;
  font-size: 14px;
  padding: 6px 14px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: 4px;
  text-decoration: none;
  transition: all .2s;
}
.tut-related a:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.tut-cta {
  margin-top: 28px;
  padding: 24px;
  background: linear-gradient(135deg, rgba(255,159,67,.1), rgba(78,205,196,.08));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  text-align: center;
}
.tut-cta p {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 14px;
}

/* Sidebar */
.tut-sidebar {
  position: sticky;
  top: 84px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.sb-card {
  background: var(--card);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}
.sb-card h3 {
  font-size: 15px;
  color: var(--primary);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.sb-group { margin-bottom: 16px; }
.sb-group:last-child { margin-bottom: 0; }
.sb-group h4 {
  font-size: 12px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}
.sb-group ul { list-style: none; }
.sb-group li { margin-bottom: 2px; }
.sb-group a {
  display: block;
  font-size: 13px;
  color: var(--text-dim);
  padding: 6px 10px;
  border-radius: 4px;
  line-height: 1.5;
  text-decoration: none;
  transition: all .2s;
}
.sb-group a:hover {
  color: var(--text);
  background: var(--bg-alt);
}
.sb-group li.active a {
  color: var(--primary);
  background: rgba(255,159,67,.1);
  font-weight: 500;
}
.sb-download p {
  font-size: 13px;
  color: var(--text-dim);
  margin-bottom: 14px;
}

/* Responsive */
@media (max-width: 900px) {
  .tut-layout { grid-template-columns: 1fr; }
  .tut-sidebar { position: static; }
  .tut-article { padding: 24px; }
  .tut-article-header h1 { font-size: 20px; }
}