/* ============================================
   Xarpite Documentation - Modern Design
   Color Theme: Red (#E50000 to #860000)
   ============================================ */

/* ===== Variables ===== */
:root {
  --xarpite-red-primary: #E50000;
  --xarpite-red-dark: #760000;
  --xarpite-red-light: #FF3333;
  --xarpite-red-subtle: #FFE5E5;

  /* Transparent variants */
  --xarpite-red-primary-transparent: rgba(229, 0, 0, 0.85);
  --xarpite-red-dark-transparent: rgba(118, 0, 0, 0.9);
  --xarpite-red-shadow-light: rgba(229, 0, 0, 0.2);
  --xarpite-red-shadow-medium: rgba(229, 0, 0, 0.3);

  --text-primary: #1a1a1a;
  --text-secondary: #666;
  --text-light: #999;

  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #f0f0f0;

  --border-color: #e0e0e0;
  --border-light: #f0f0f0;

  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;

  --header-height: 100px;

  /* Breakpoint values for reference (CSS custom properties cannot be used in @media queries) */
  /* --breakpoint-tablet: 968px; */
  /* --breakpoint-mobile: 768px; */
}

/* ===== Reset & Base ===== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.7;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ===== Layout ===== */
.page-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ===== Header ===== */
.site-header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-light);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
  backdrop-filter: blur(10px);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--text-primary);
  transition: opacity var(--transition-fast);
}

.logo-link:hover {
  opacity: 0.8;
}

.logo-icon {
  width: 36px;
  height: 36px;
  transition: transform var(--transition-normal);
}

.logo-link:hover .logo-icon {
  transform: scale(1.05);
}

.logo-text {
  font-size: 1.375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-primary);
}

.version-badge {
  color: var(--text-secondary);
}

.main-nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
  font-size: 0.9375rem;
}

.nav-link:hover {
  color: var(--xarpite-red-primary);
  background-color: var(--xarpite-red-subtle);
}

.nav-link.playground-link {
  color: white;
  background: linear-gradient(135deg, var(--xarpite-red-light), var(--xarpite-red-dark));
  font-weight: 600;
  padding: 0.5rem 1rem;
  box-shadow: 0 2px 4px var(--xarpite-red-shadow-light);
}

.nav-link.playground-link:hover {
  box-shadow: 0 4px 8px var(--xarpite-red-shadow-medium);
  transform: translateY(-1px);
}

/* ===== Main Content ===== */
.main-content {
  flex: 1;
  padding: 2rem 0;
}

.content-wrapper {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  grid-template-areas: "sidebar content";
  gap: 3rem;
  align-items: start;
}

/* ===== Sidebar Navigation ===== */
.sidebar {
  grid-area: sidebar;
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  border-left: 3px solid var(--xarpite-red-primary);
}

.nav-title {
  color: var(--xarpite-red-primary);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--xarpite-red-subtle);
}

.nav-list {
  list-style: none;
}

.nav-list li {
  margin-bottom: 0.25rem;
}

.nav-list a {
  display: block;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  transition: all var(--transition-fast);
  border-left: 3px solid transparent;
}

.nav-list a:hover {
  color: var(--xarpite-red-primary);
  background-color: rgba(229, 0, 0, 0.05);
  border-left-color: var(--xarpite-red-primary);
  padding-left: 1rem;
}

.nav-list a.active {
  color: var(--xarpite-red-primary);
  background-color: rgba(229, 0, 0, 0.08);
  font-weight: 600;
  border-left-color: var(--xarpite-red-primary);
}

/* ===== Document Content ===== */
.doc-content {
  grid-area: content;
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  border-left: 3px solid var(--xarpite-red-primary);
  min-height: 500px;
}

/* Typography */
.doc-content h1 {
  color: var(--xarpite-red-dark);
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 3px solid var(--xarpite-red-subtle);
  letter-spacing: -0.02em;
}

.doc-content h2 {
  color: var(--xarpite-red-dark);
  font-size: 1.875rem;
  font-weight: 600;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
  padding-left: 0.75rem;
  border-left: 4px solid var(--xarpite-red-primary);
  position: relative;
  transition: all var(--transition-fast);
}

.doc-content h3 {
  color: var(--text-primary);
  font-size: 1.375rem;
  font-weight: 600;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
  position: relative;
  padding-left: 1rem;
}

.doc-content h3::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 4px;
  height: 60%;
  background: linear-gradient(180deg, var(--xarpite-red-primary), var(--xarpite-red-dark));
  border-radius: 2px;
}

.doc-content h4 {
  color: var(--text-primary);
  font-size: 1.125rem;
  font-weight: 600;
  margin-top: 1.5rem;
  margin-bottom: 0.5rem;
  position: relative;
  padding-left: 0.75rem;
}

.doc-content h4::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--xarpite-red-primary);
  font-weight: bold;
}

/* Heading Anchor Links */
.doc-content h1,
.doc-content h2,
.doc-content h3,
.doc-content h4 {
  scroll-margin-top: var(--header-height);
}

.doc-content .heading-anchor-link {
  opacity: 0;
  margin-left: 0.5rem;
  color: var(--xarpite-red-primary);
  text-decoration: none;
  font-weight: 400;
  transition: all var(--transition-fast);
  display: inline-block;
  vertical-align: middle;
  line-height: 1;
}

/* Reset ::after underline animation inherited from .doc-content a::after */
.doc-content .heading-anchor-link::before,
.doc-content .heading-anchor-link::after {
  content: none;
}

.doc-content h1:hover .heading-anchor-link,
.doc-content h2:hover .heading-anchor-link,
.doc-content h3:hover .heading-anchor-link,
.doc-content h4:hover .heading-anchor-link,
.doc-content .heading-anchor-link:focus {
  opacity: 1;
}

.doc-content .heading-anchor-link:hover {
  color: var(--xarpite-red-dark);
  transform: scale(1.1);
}

.doc-content p {
  margin-bottom: 1rem;
  line-height: 1.8;
  position: relative;
  z-index: 1;
}

.doc-content a {
  color: var(--xarpite-red-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all var(--transition-fast);
  position: relative;
  font-weight: 500;
}

.doc-content a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--xarpite-red-primary), var(--xarpite-red-dark));
  transition: width var(--transition-fast);
}

.doc-content a:hover::after {
  width: 100%;
}

.doc-content a:hover {
  color: var(--xarpite-red-dark);
}

/* Lists */
.doc-content ul,
.doc-content ol {
  margin-bottom: 1rem;
  padding-left: 2rem;
}

.doc-content li {
  margin-bottom: 0.5rem;
  line-height: 1.7;
}

.doc-content ul li::marker {
  color: var(--xarpite-red-primary);
  font-weight: bold;
}

.doc-content ol li::marker {
  color: var(--xarpite-red-primary);
  font-weight: 600;
}

.doc-content li {
  position: relative;
  padding-left: 0.25rem;
}

.doc-content li:hover {
  color: var(--xarpite-red-dark);
}

/* Code Blocks */
.doc-content code {
  background-color: var(--bg-secondary);
  color: var(--xarpite-red-dark);
  padding: 0.2em 0.4em;
  border-radius: var(--radius-sm);
  font-family: "Consolas", "Monaco", "Courier New", monospace;
  font-size: 0.9em;
  font-weight: 500;
  border: none;
}

.doc-content pre {
  background: #333;
  color: #f8f8f8;
  padding: 1.5rem;
  padding-right: 6rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 1.5rem 0;
  box-shadow: var(--shadow-md);
  border-left: 3px solid var(--xarpite-red-primary);
  position: relative;
  white-space: pre;
  overflow-wrap: normal;
  word-break: normal;
  max-width: 100%;
  box-sizing: border-box;
}

.doc-content pre code {
  background: none;
  color: inherit;
  padding: 0;
  font-size: 0.875rem;
  line-height: 1.6;
  border: none;
  outline: none;
  text-decoration: none;
  white-space: pre;
  overflow-wrap: normal;
}

/* Copy button for code blocks */
.doc-content .code-block-wrapper {
  position: relative;
  margin: 1.5rem 0;
  max-width: 100%;
}

.doc-content .code-block-wrapper pre {
  margin: 0;
}

.doc-content .copy-code-button {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  color: #f8f8f8;
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  backdrop-filter: blur(5px);
  z-index: 10;
}

.doc-content .copy-code-button:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: rgba(255, 255, 255, 0.4);
  transform: translateY(-1px);
}

.doc-content .copy-code-button:active {
  transform: translateY(0);
}

.doc-content .copy-code-button.copied {
  background: var(--xarpite-red-primary);
  border-color: var(--xarpite-red-primary);
  color: white;
}

/* Syntax highlighting overrides */
.doc-content .highlight {
  margin: 1.5rem 0;
}

.doc-content .highlight pre {
  margin: 0;
}

/* Tables */
.doc-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.doc-content thead {
  background-color: var(--bg-tertiary);
  color: var(--xarpite-red-dark);
  border-bottom: 2px solid var(--xarpite-red-primary);
}

.doc-content th {
  padding: 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.02em;
}

.doc-content td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border-light);
}

.doc-content tbody tr {
  transition: all var(--transition-fast);
}

.doc-content tbody tr:hover {
  background-color: rgba(229, 0, 0, 0.04);
}

.doc-content tbody tr:last-child td {
  border-bottom: none;
}

/* Blockquotes */
.doc-content blockquote {
  border-left: 4px solid var(--xarpite-red-primary);
  background-color: var(--bg-secondary);
  padding: 1rem 1.5rem;
  margin: 1.5rem 0;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

.doc-content blockquote p:last-child {
  margin-bottom: 0;
}

/* Horizontal Rule */
.doc-content hr {
  border: none;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--xarpite-red-primary), transparent);
  margin: 2rem 0;
}

/* ===== Footer ===== */
.site-footer {
  background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
  color: white;
  padding: 2rem 0;
  margin-top: 4rem;
  border-top: 3px solid var(--xarpite-red-primary);
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
}

.footer-content {
  text-align: center;
}

.footer-text {
  font-size: 0.9rem;
  opacity: 0.8;
}

.footer-link {
  color: var(--xarpite-red-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: white;
}

/* ===== Responsive Design ===== */
@media (max-width: 968px) {
  .content-wrapper {
    grid-template-columns: minmax(0, 1fr);
    grid-template-areas:
      "content"
      "sidebar";
    gap: 2rem;
  }

  .sidebar {
    position: relative;
    top: 0;
  }

  .doc-content {
    padding: 1.5rem;
  }

  .doc-content h1 {
    font-size: 2rem;
  }

  .doc-content h2 {
    font-size: 1.5rem;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }

  .header-content {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .main-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
  }

  .nav-link {
    font-size: 0.9rem;
    padding: 0.4rem 0.8rem;
  }

  .doc-content {
    padding: 1rem;
  }

  .doc-content h1 {
    font-size: 1.75rem;
  }

  .doc-content pre {
    padding: 1rem;
    font-size: 0.8rem;
  }
}

/* ===== Utility Classes ===== */
.text-center {
  text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

/* ===== Animation ===== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInFromLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}



.doc-content {
  animation: fadeIn 0.5s ease;
}

.sidebar {
  animation: slideInFromLeft 0.5s ease;
}

/* ===== Scrollbar Styling ===== */
::-webkit-scrollbar {
  width: 12px;
  height: 12px;
}

/* ===== Table of Contents (TOC) ===== */
.table-of-contents {
  background: var(--bg-secondary);
  border-left: 4px solid var(--xarpite-red-primary);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 2rem 0;
  box-shadow: var(--shadow-sm);
}

.table-of-contents h2 {
  font-size: 1.25rem;
  color: var(--xarpite-red-dark);
  margin-bottom: 1rem;
  font-weight: 600;
}

.table-of-contents ul {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.table-of-contents > ul {
  margin-top: 0.5rem;
}

.table-of-contents li {
  margin: 0.5rem 0;
}

.table-of-contents ul ul {
  margin-left: 1.5rem;
  margin-top: 0.5rem;
}

.table-of-contents a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
  display: inline-block;
  line-height: 1.6;
}

.table-of-contents a:hover {
  color: var(--xarpite-red-primary);
}

.table-of-contents a:before {
  content: "▸ ";
  color: var(--xarpite-red-primary);
  margin-right: 0.5rem;
  font-size: 0.8em;
}

/* Markdown-generated TOC styling (when using {:toc}) */
#markdown-toc {
  list-style: none;
  padding-left: 0;
}

#markdown-toc li {
  margin: 0.5rem 0;
}

#markdown-toc ul {
  margin-left: 1.5rem;
  margin-top: 0.5rem;
  list-style: none;
}

#markdown-toc a {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
  display: inline-block;
  line-height: 1.6;
}

#markdown-toc a:hover {
  color: var(--xarpite-red-primary);
}

#markdown-toc a:before {
  content: "▸ ";
  color: var(--xarpite-red-primary);
  margin-right: 0.5rem;
  font-size: 0.8em;
}

::-webkit-scrollbar-track {
  background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--xarpite-red-primary), var(--xarpite-red-dark));
  border-radius: 6px;
  border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, var(--xarpite-red-dark), var(--xarpite-red-primary));
}

/* Firefox scrollbar */
html, body {
  scrollbar-width: thin;
  scrollbar-color: var(--xarpite-red-primary) var(--bg-secondary);
}

/* ===== Selection Styling ===== */
::selection {
  background: var(--xarpite-red-primary);
  color: white;
}

::-moz-selection {
  background: var(--xarpite-red-primary);
  color: white;
}

/* ===== Print Styles ===== */
@media print {
  .site-header,
  .sidebar,
  .site-footer {
    display: none;
  }

  .content-wrapper {
    grid-template-columns: minmax(0, 1fr);
  }

  .doc-content {
    box-shadow: none;
    border: none;
  }
}