/* module-detail.css — Module detail page */

/* ── Module Header ───────────────────────────────────────────────────── */
.module-header {
  background: var(--grad-primary);
  padding: 130px 0 60px;
}

.module-header-inner { max-width: 760px; }

.module-header-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 20px;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--light-ui);
}

.meta-item i { color: var(--card); }

.module-header-title {
  font-size: clamp(1.8rem, 4vw, 3rem);
  color: #fff;
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

.module-header-desc {
  font-size: 1.05rem;
  color: var(--light-ui);
  line-height: 1.8;
  max-width: 600px;
  margin-bottom: 0;
}

/* ── Two-column layout ───────────────────────────────────────────────── */
.module-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 48px;
  padding-top: 60px;
  padding-bottom: 80px;
  align-items: start;
}

/* ── TOC Sidebar ─────────────────────────────────────────────────────── */
.module-toc { /* column */ }

.toc-sticky {
  position: sticky;
  top: 86px;
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.toc-title {
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 16px;
}

.toc-list { list-style: none; display: flex; flex-direction: column; gap: 4px; }

.toc-link {
  display: block;
  padding: 8px 12px;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: var(--transition-fast);
  border-left: 2px solid transparent;
}

.toc-link:hover { color: var(--primary); background: var(--bg-light); }
.toc-link.active { color: var(--primary); font-weight: 600; border-left-color: var(--btn); background: var(--bg-light); }

.toc-progress-bar {
  margin-top: 20px;
  height: 3px;
  background: var(--bg-light);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.toc-progress-fill {
  height: 100%;
  background: var(--grad-btn);
  border-radius: var(--radius-full);
  width: 0%;
  transition: width 0.2s ease;
}

/* ── Content Sections ────────────────────────────────────────────────── */
.content-section {
  background: var(--bg-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 48px;
  margin-bottom: 32px;
  scroll-margin-top: 100px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--btn);
  background: var(--bg-light);
  padding: 5px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 16px;
}

.content-heading {
  font-size: 1.7rem;
  color: var(--text-dark);
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.content-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 32px;
}

/* ── Rich Text ───────────────────────────────────────────────────────── */
.rich-text h2,
.rich-text h3,
.rich-text h4 {
  color: var(--text-dark);
  margin: 28px 0 12px;
}

.rich-text h3 { font-size: 1.2rem; }

.rich-text p {
  margin-bottom: 16px;
  line-height: 1.8;
}

.rich-text ul, .rich-text ol {
  margin: 0 0 16px 24px;
  line-height: 1.8;
}

.rich-text li { margin-bottom: 8px; }

.rich-text strong { color: var(--primary); }

/* ── Workflow ────────────────────────────────────────────────────────── */
.workflow-controls {
  display: flex;
  gap: 12px;
  margin-bottom: 28px;
}

.workflow-diagram {
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
}

.workflow-step {
  display: flex;
  align-items: flex-start;
  gap: 20px;
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  position: relative;
}

.workflow-step.visible {
  opacity: 1;
  transform: translateX(0);
}

.workflow-step.active .wf-icon-wrap {
  background: var(--grad-btn);
  color: #fff;
  box-shadow: 0 0 20px rgba(54,86,166,0.5);
  transform: scale(1.1);
}

.wf-icon-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
}

.wf-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background: var(--bg-light);
  border: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--primary);
  transition: var(--transition);
  position: relative;
  z-index: 1;
}

.wf-connector {
  width: 2px;
  height: 32px;
  background: var(--border);
  margin: 0 auto;
}

.workflow-step:last-child .wf-connector { display: none; }

.wf-content {
  padding-bottom: 32px;
  flex: 1;
}

.wf-step-num {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.wf-label {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-dark);
  font-family: var(--font-heading);
  margin-bottom: 6px;
}

.wf-detail {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* ── 3D Viewer ───────────────────────────────────────────────────────── */
.viewer3d-wrapper {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--bg-dark);
}

.viewer3d-canvas {
  width: 100%;
  height: 480px;
  position: relative;
}

.viewer3d-canvas canvas {
  display: block;
  width: 100% !important;
  height: 100% !important;
}

.viewer3d-loading {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  color: var(--light-ui);
  font-size: 0.9rem;
}

.viewer3d-info-panel {
  position: absolute;
  bottom: 60px;
  right: 16px;
  background: rgba(15,31,74,0.92);
  border: 1px solid rgba(107,135,201,0.3);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  max-width: 240px;
  backdrop-filter: blur(8px);
  transition: var(--transition);
}

.viewer-info-title {
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 6px;
  font-family: var(--font-heading);
}

.viewer-info-desc {
  font-size: 0.8rem;
  color: var(--light-ui);
  line-height: 1.6;
}

.viewer3d-legend {
  position: absolute;
  bottom: 16px;
  right: 16px;
  display: flex;
  gap: 8px;
}

.viewer-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: rgba(31,60,136,0.8);
  border: 1px solid rgba(107,135,201,0.3);
  color: var(--light-ui);
  font-size: 0.85rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
  backdrop-filter: blur(8px);
}

.viewer-btn:hover {
  background: var(--btn);
  color: #fff;
  transform: scale(1.1);
}

/* ── Components ──────────────────────────────────────────────────────── */
.components-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.component-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: var(--transition);
}

.component-card:hover {
  border-color: var(--light-ui);
  box-shadow: var(--shadow-sm);
  background: var(--bg-light);
}

.comp-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--grad-btn);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  color: #fff;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(54,86,166,0.3);
}

.comp-name {
  font-weight: 700;
  color: var(--text-dark);
  font-size: 0.95rem;
  margin-bottom: 2px;
}

.comp-qty {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--btn);
  background: var(--bg-light);
  display: inline-block;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  margin-bottom: 6px;
}

.comp-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Connections Table ───────────────────────────────────────────────── */
.table-wrapper { overflow-x: auto; border-radius: var(--radius-md); border: 1px solid var(--border); }

.connections-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.connections-table th {
  background: var(--bg-dark);
  color: var(--light-ui);
  padding: 14px 18px;
  text-align: left;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  white-space: nowrap;
}

.connections-table td {
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
  color: var(--text-body);
  vertical-align: middle;
}

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

.connections-table tr:hover td { background: var(--bg-page); }

.conn-pin strong { color: var(--primary); font-family: var(--font-mono); font-size: 0.85rem; }
.conn-notes { color: var(--text-muted); font-size: 0.82rem; }

.wire-color-swatch {
  display: inline-block;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  vertical-align: middle;
  border: 2px solid rgba(0,0,0,0.1);
}

/* ── Code Blocks ─────────────────────────────────────────────────────── */
.code-block-wrap {
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
  margin-bottom: 24px;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: #1a1a2e;
  padding: 14px 20px;
  gap: 12px;
  flex-wrap: wrap;
}

.code-block-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--light-ui);
  font-family: var(--font-mono);
}

.code-block-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.code-lang-badge {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--light-ui);
  background: rgba(107,135,201,0.2);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  letter-spacing: 0.08em;
}

.code-copy-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--light-ui);
  background: rgba(107,135,201,0.12);
  border: 1px solid rgba(107,135,201,0.25);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  transition: var(--transition-fast);
  cursor: pointer;
  font-family: var(--font-body);
}

.code-copy-btn:hover { background: rgba(107,135,201,0.25); color: #fff; }
.code-copy-btn.copied { background: rgba(74,222,128,0.2); color: #4ade80; border-color: rgba(74,222,128,0.3); }

.code-content-wrap pre {
  margin: 0;
  border-radius: 0;
  max-height: 520px;
  overflow-y: auto;
}

.code-content-wrap pre code {
  background: transparent;
  font-size: 0.88rem;
  padding: 0;
}

/* Scrollbar inside code */
.code-content-wrap pre::-webkit-scrollbar { width: 6px; height: 6px; }
.code-content-wrap pre::-webkit-scrollbar-track { background: transparent; }
.code-content-wrap pre::-webkit-scrollbar-thumb { background: rgba(107,135,201,0.4); border-radius: 3px; }

/* Code Explanations */
.code-explanations {
  margin-top: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.exp-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary);
  background: var(--bg-light);
  border: none;
  cursor: pointer;
  text-align: left;
  transition: var(--transition-fast);
}

.exp-toggle:hover { background: var(--bg-light); }
.exp-toggle[aria-expanded="true"] { background: var(--bg-light); }

.exp-chevron {
  margin-left: auto;
  transition: transform 0.3s ease;
}

.exp-toggle[aria-expanded="true"] .exp-chevron { transform: rotate(180deg); }

.exp-panel { border-top: 1px solid var(--border); }

.exp-item {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border);
}

.exp-item:last-child { border-bottom: none; }

.exp-snippet {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--primary);
  background: var(--bg-light);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
  border-left: 3px solid var(--btn);
}

.exp-text {
  font-size: 0.88rem;
  color: var(--text-body);
  line-height: 1.7;
  margin-bottom: 0;
}

/* ── Downloads ───────────────────────────────────────────────────────── */
.downloads-grid {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.download-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  transition: var(--transition);
}

.download-card:hover {
  border-color: var(--light-ui);
  box-shadow: var(--shadow-sm);
}

.dl-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.dl-body { flex: 1; }

.dl-title {
  font-weight: 700;
  color: var(--text-dark);
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.dl-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  line-height: 1.5;
}

.dl-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.dl-type-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-full);
  letter-spacing: 0.06em;
}

.dl-size { font-size: 0.78rem; color: var(--text-muted); }

.dl-global-badge {
  font-size: 0.72rem;
  color: var(--btn);
  display: flex;
  align-items: center;
  gap: 4px;
}

.dl-btn { flex-shrink: 0; }

/* ── Responsive ──────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .module-layout { grid-template-columns: 200px 1fr; gap: 32px; }
}

@media (max-width: 900px) {
  .module-layout { grid-template-columns: 1fr; }
  .module-toc { display: none; }
  .content-section { padding: 28px 20px; }
  .components-grid { grid-template-columns: 1fr; }
  .viewer3d-canvas { height: 320px; }
}

@media (max-width: 600px) {
  .module-header { padding: 120px 0 40px; }
  .workflow-controls { flex-wrap: wrap; }
}