/* ============================================
   LAB.CSS — Lab page styles
   ============================================ */

.lab-main { padding: 60px 0 100px; }

.lab-section { margin-bottom: 72px; }
.lab-section:last-child { margin-bottom: 0; }

.lab-section-header { margin-bottom: 32px; }
.lab-section-header h2 { font-size: 1.8rem; margin-bottom: 8px; }
.lab-section-header p { font-size: 0.95rem; color: var(--muted); }

/* --- EMBED FRAME --- */
.embed-frame {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}
.embed-placeholder {
  padding: 60px 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 16px;
  border: 2px dashed var(--border-2);
  border-radius: var(--radius);
  min-height: 300px;
}
.embed-icon { font-size: 2.5rem; }
.embed-placeholder h3 { font-size: 1.3rem; color: var(--text); }
.embed-placeholder p { color: var(--muted); font-size: 0.92rem; max-width: 480px; }
.embed-code {
  width: 100%;
  max-width: 560px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--border-2);
  background: #06090d;
  text-align: left;
}
.embed-code pre {
  padding: 18px 20px;
  font-family: 'Space Mono', monospace;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--soft);
  overflow-x: auto;
}

/* --- LAB GRID --- */
.lab-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.lab-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: border-color 0.18s, transform 0.18s;
}
.lab-card:hover { border-color: var(--border-2); transform: translateY(-2px); }
.lab-card--placeholder { opacity: 0.6; }
.lab-card-top { display: flex; gap: 8px; }
.lab-tag {
  font-family: 'Space Mono', monospace;
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--surface-2);
  border: 1px solid var(--border-2);
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.lab-card h3 { font-size: 1.05rem; color: var(--text); }
.lab-card p { font-size: 0.88rem; color: var(--muted); line-height: 1.55; flex: 1; }
.lab-card-footer { margin-top: auto; padding-top: 8px; border-top: 1px solid var(--border); }
.lab-status {
  font-family: 'Space Mono', monospace;
  font-size: 0.74rem;
  color: var(--muted);
}

/* --- GUIDE STEPS --- */
.integration-guide {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
  background: var(--surface);
}
.integration-guide .lab-section-header { margin-bottom: 28px; }
.guide-steps { display: flex; flex-direction: column; gap: 0; }
.guide-step {
  display: flex;
  gap: 24px;
  padding: 20px 0;
  border-bottom: 1px solid var(--border);
}
.guide-step:last-child { border-bottom: none; padding-bottom: 0; }
.step-num {
  font-family: 'Space Mono', monospace;
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  flex-shrink: 0;
  width: 36px;
}
.step-content h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 6px;
}
.step-content h4 code {
  font-size: 0.85rem;
  color: var(--accent);
  background: rgba(74,240,196,0.08);
  padding: 2px 6px;
  border-radius: 4px;
}
.step-content p {
  font-size: 0.88rem;
  color: var(--muted);
  line-height: 1.6;
}
.step-content p code {
  font-size: 0.8rem;
  color: var(--soft);
  background: var(--bg);
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid var(--border);
}

@media (max-width: 900px) {
  .lab-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .lab-grid { grid-template-columns: 1fr; }
  .integration-guide { padding: 20px; }
}