/* Import Geist Mono font */
@import url('https://cdn.jsdelivr.net/npm/geist@1.3.1/dist/fonts/geist-mono/style.css');

/* Text selection styling */
::selection {
  background-color: #999999;
  color: #000000;
}

::-moz-selection {
  background-color: #999999;
  color: #000000;
}

/* Top Header Bar */
.top-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 60px;
  background: #ffffff;
  border-bottom: 1px solid #e5e5e7;
  z-index: 1000;
  display: flex;
  align-items: center;
}

.header-container {
  width: 100%;
  max-width: 100%;
  margin: 0;
  padding: 0 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-sizing: border-box;
  position: relative;
}

.header-brand {
  display: flex;
  align-items: center;
  margin-left: 30px;  /* Align with sidebar content */
}

.header-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: #000 !important;
  text-decoration: none;
}

.header-title:hover {
  color: #333 !important;
}

.header-search {
  position: absolute;
  right: 1rem;
  top: calc(50% - 18px);
  height: 36px;
}

.header-search .book-search {
  margin: 0;
  display: block;
  height: 100%;
}

.header-search .book-search input {
  margin: 0;
  height: 36px;
  text-align: left;
  width: 200px;
  display: block;
}

/* Adjust main content for header */
body {
  margin: 0;
  padding: 0;
  padding-top: 0;
}

/* Ensure main container starts below header */
.container.flex {
  padding-top: 60px !important;
  margin-top: 0 !important;
  position: relative;
}

main.container {
  position: relative;
  top: 0;
  min-height: 100vh;
}

/* Override default sidebar positioning */
.book-menu {
  position: fixed !important;
  left: 0;
  top: 60px !important;
  bottom: 0;
  width: 250px !important;
  height: calc(100vh - 60px) !important;
  overflow-y: auto;
  z-index: 50;
  background: white;
  padding-top: 1rem !important;
  padding-left: 0 !important;
  box-sizing: border-box;
}

aside.book-menu {
  width: 250px !important;
  flex: none !important;
}

/* Sidebar content */
.book-menu-content {
  width: 100%;
  padding: 1rem 20px 1rem 30px;
  margin: 0;
  margin-top: 4em;
  box-sizing: border-box;
}

.book-menu nav {
  text-align: left;
  width: auto;
  padding: 0 !important;
  margin: 0 !important;
}

.book-menu nav ul {
  padding-left: 0 !important;
  margin: 0 !important;
  list-style: none;
  text-align: left;
}

.book-menu nav li {
  text-align: left;
  margin: 0;
  padding: 0;
}

.book-menu nav a {
  display: block;
  padding: 0.25rem 0;
  text-align: left;
}

/* Adjust main content to account for narrower sidebar */
.book-page {
  margin-left: 250px !important;
  padding: 2rem 2rem;
  margin-top: 0;
}

@media screen and (max-width: 56rem) {
  .book-page {
    margin-left: 0 !important;
  }
}

/* Add padding to top of right TOC if present */
.book-toc {
  top: 60px;
  height: calc(100vh - 60px);
}

.book-toc-content {
  padding-top: 1.5rem;
}

/* Hide search in sidebar */
.book-menu .book-search {
  display: none;
}

/* Main font override */
body, .book-menu, .markdown {
  font-family: "Helvetica Neue", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif !important;
}

/* Page padding */
.book-page, .container, main {
  padding-left: max(1em, env(safe-area-inset-left)) !important;
  padding-right: max(1em, env(safe-area-inset-right)) !important;
}

.markdown, .book-article {
  padding: 0 1em;
}

@media (max-width: 56rem) {
  .book-page, .container, main {
    padding: 0 1em !important;
  }
}

/* Code block styling - black text on light grey */
pre, code {
  background-color: #eeeff1 !important;
  color: #000000 !important;
  font-family: 'Geist Mono', 'SF Mono', Monaco, 'Courier New', monospace;
  font-weight: 500 !important;
}

pre {
  padding: 1rem !important;
  border-radius: 6px !important;
  overflow-x: auto !important;
  line-height: 1.45 !important;
  font-size: 0.75em !important;
  font-weight: 500 !important;
}

code {
  padding: 0.2em 0.4em !important;
  border-radius: 3px !important;
  font-size: 0.75em !important;
  font-weight: 500 !important;
}

pre code {
  padding: 0 !important;
  background-color: transparent !important;
  font-size: inherit !important;
  font-weight: 500 !important;
}

/* Remove any syntax highlighting colors but keep medium weight */
pre * {
  color: #000000 !important;
  background-color: transparent !important;
  font-weight: 500 !important;
  font-style: normal !important;
  text-decoration: none !important;
}

/* Blockquote styling */
blockquote {
  font-family: 'Times New Roman', Times, serif !important;
  font-style: italic !important;
  font-size: 1.1rem !important;
  border-left: none !important;
  border: none !important;
  padding-left: 1.5rem;
  margin: 1.5rem 0;
}

blockquote p {
  font-family: inherit;
  font-style: inherit;
}

.book-hint {
  border-left: none !important;
  border: none !important;
}

/* Chapter header styling */
.chapter-header {
  margin-bottom: 4rem;
}

.chapter-title {
  font-size: 2.5rem !important;
  font-weight: 600;
  margin: 0 0 0.25rem 0 !important;
  line-height: 1.2;
}

.chapter-number {
  font-size: 0.9rem;
  color: #6e6e73;
  font-weight: 400;
  letter-spacing: 0.02em;
}

/* Sidebar navigation enhancements */
.book-menu nav {
  font-size: 0.95rem;
}

/* Style nested TOC items in sidebar */
.book-menu .book-section-flat {
  margin-left: 0;
}

.book-menu .book-page.with-toc {
  margin-left: 1rem;
  font-size: 0.9rem;
}

/* Active chapter highlighting */
.book-menu .active {
  font-weight: 600;
  color: #000000;
}

.book-menu a.active {
  color: #000000;
}

.book-menu nav a:hover {
  color: #000000;
  opacity: 0.7;
}

/* Collapsible sections */
.book-menu .book-section-container {
  margin-left: 1rem;
}

/* Center the content better */
.book-page {
  max-width: 48rem;
  margin: 0 auto;
}

/* Hide back arrow navigation but keep forward arrow */
.book-pagination .book-pagination-item:first-child {
  display: none !important;
}