/* ═══════════════════════════════════════════
   DEVDOCS COMPONENT STYLING
   ═══════════════════════════════════════════ */

.devdocs-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 20px;
  min-height: 600px;
  align-items: start;
}

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

/* Sidebar and Tree View */
.devdocs-sidebar {
  background: rgba(20, 18, 45, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  max-height: 700px;
  overflow-y: auto;
}

.devdocs-search-input {
  width: 100%;
  padding: 10px 12px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 13px;
  outline: none;
  transition: all 0.2s ease;
}

.devdocs-search-input:focus {
  border-color: #8b5cf6;
  background: rgba(139, 92, 246, 0.05);
}

.devdocs-tree {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

/* Folder and File Nodes */
.devdocs-tree-node {
  display: flex;
  flex-direction: column;
}

.devdocs-node-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
  user-select: none;
}

.devdocs-node-header:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
}

.devdocs-node-header.active {
  background: rgba(139, 92, 246, 0.15);
  color: #c084fc;
  border-left: 2px solid #8b5cf6;
}

.devdocs-node-chevron {
  font-size: 10px;
  width: 12px;
  color: var(--text-muted);
  transition: transform 0.2s ease;
}

.devdocs-node-chevron.expanded {
  transform: rotate(90deg);
}

.devdocs-node-icon {
  font-size: 14px;
  color: #a78bfa;
}

.devdocs-node-children {
  display: none;
  flex-direction: column;
  padding-left: 24px;
  margin-top: 2px;
  gap: 2px;
  border-left: 1px dashed rgba(255, 255, 255, 0.06);
  margin-left: 16px;
}

.devdocs-node-children.open {
  display: flex;
}

/* Document View Area */
.devdocs-content-area {
  background: rgba(20, 18, 45, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius);
  padding: 28px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  min-height: 600px;
  animation: devdocsFadeIn 0.35s ease;
}

.devdocs-content-header {
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 16px;
  margin-bottom: 20px;
}

.devdocs-doc-title {
  font-size: 24px;
  font-weight: 800;
  color: #ffd700;
  margin-bottom: 6px;
}

.devdocs-doc-subtitle {
  font-size: 13px;
  color: var(--text-muted);
}

/* Tabs inside Document Reader */
.devdocs-doc-tabs {
  display: flex;
  gap: 8px;
  margin: 16px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  padding-bottom: 8px;
}

.devdocs-doc-tab-btn {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 12.5px;
  font-weight: 700;
  padding: 6px 12px;
  cursor: pointer;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.devdocs-doc-tab-btn:hover {
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-primary);
}

.devdocs-doc-tab-btn.active {
  background: rgba(139, 92, 246, 0.12);
  color: #c084fc;
}

/* Code block styles */
.devdocs-code-block {
  background: #0d0c1d;
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-sm);
  padding: 16px;
  overflow-x: auto;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  line-height: 1.6;
  color: #e2e8f0;
  margin: 12px 0;
  position: relative;
}

.devdocs-code-block::before {
  content: attr(data-lang);
  position: absolute;
  top: 6px;
  right: 12px;
  font-size: 10px;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.devdocs-list {
  padding-left: 20px;
  margin: 12px 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.devdocs-list li {
  font-size: 13.5px;
  line-height: 1.6;
  color: var(--text-secondary);
}

.devdocs-list li strong {
  color: var(--text-primary);
}

/* ── Light Mode Overrides ── */
:root[data-theme="light"] .devdocs-sidebar {
  background: var(--bg-secondary);
  border-color: var(--border);
}
:root[data-theme="light"] .devdocs-search-input {
  background: var(--bg-card);
}
:root[data-theme="light"] .devdocs-node-header:hover {
  background: rgba(0, 0, 0, 0.04);
}
:root[data-theme="light"] .devdocs-node-children {
  border-left-color: rgba(0, 0, 0, 0.08);
}
:root[data-theme="light"] .devdocs-content-area {
  background: var(--bg-secondary);
  border-color: var(--border);
}
:root[data-theme="light"] .devdocs-content-header {
  border-bottom-color: var(--border);
}
:root[data-theme="light"] .devdocs-doc-title {
  color: var(--accent-blue);
}
:root[data-theme="light"] .devdocs-doc-tabs {
  border-bottom-color: var(--border);
}
:root[data-theme="light"] .devdocs-doc-tab-btn:hover {
  background: rgba(0, 0, 0, 0.03);
}
:root[data-theme="light"] .devdocs-node-header.active {
  color: #7c3aed;
  background: rgba(124, 58, 237, 0.08);
}
:root[data-theme="light"] .devdocs-doc-tab-btn.active {
  color: #7c3aed;
  background: rgba(124, 58, 237, 0.08);
}
:root[data-theme="light"] .devdocs-code-block {
  background: #f8fafc;
  border-color: var(--border);
  color: #0f172a;
}

@keyframes devdocsFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Light Mode Ebook Overrides ── */
:root[data-theme="light"] .ebook-sidebar {
  background: var(--bg-secondary);
  border-color: var(--border);
}
:root[data-theme="light"] .ebook-book-selector {
  background: var(--bg-card);
  border-color: var(--border);
  color: var(--text-primary);
}
:root[data-theme="light"] .ebook-toc-item {
  color: var(--text-secondary);
}
:root[data-theme="light"] .ebook-toc-item:hover {
  background: rgba(0, 0, 0, 0.03);
  color: var(--text-primary);
}
:root[data-theme="light"] .ebook-toc-item.active {
  background: rgba(124, 58, 237, 0.08);
  color: #7c3aed;
  border-left-color: #7c3aed;
}
:root[data-theme="light"] .ebook-reader-card {
  background: var(--bg-secondary);
  border-color: var(--border);
  box-shadow: var(--shadow-md);
}
:root[data-theme="light"] .ebook-progress-container {
  background: rgba(0, 0, 0, 0.05);
}
:root[data-theme="light"] .ebook-body h1, 
:root[data-theme="light"] .ebook-body h2, 
:root[data-theme="light"] .ebook-body h3, 
:root[data-theme="light"] .ebook-body h4 {
  color: var(--text-primary);
}
:root[data-theme="light"] .ebook-body pre {
  background: #f8fafc;
  border: 1px solid var(--border);
}
:root[data-theme="light"] .ebook-body pre code {
  color: #0f172a;
}
:root[data-theme="light"] .ebook-body code {
  color: #e11d48;
  background: rgba(225, 29, 72, 0.05);
}
:root[data-theme="light"] .ebook-callout.note {
  background: rgba(124, 58, 237, 0.04);
  border-left-color: #7c3aed;
}
:root[data-theme="light"] .ebook-pagination {
  border-top-color: var(--border);
}
:root[data-theme="light"] .ebook-notepad-title {
  color: var(--text-primary);
}
:root[data-theme="light"] .ebook-notepad-textarea {
  background: var(--bg-card);
  border-color: var(--border);
  color: var(--text-primary);
}
:root[data-theme="light"] .download-banner {
  background: rgba(124, 58, 237, 0.04);
  border-color: rgba(124, 58, 237, 0.15);
}
:root[data-theme="light"] .ebook-sidebar div[style*="border-top"] {
  border-top-color: var(--border) !important;
}
:root[data-theme="light"] .ebook-reader-card h2[style*="color:#ffd700"] {
  color: var(--text-primary) !important;
  border-bottom: 1px solid var(--border) !important;
}
:root[data-theme="light"] .download-banner div[style*="color:#ffd700"] {
  color: var(--text-primary) !important;
}
:root[data-theme="light"] .ebook-reader-card div[style*="color:#a78bfa"] {
  color: #7c3aed !important;
}