/**
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 */

/* ========================================================================
   CSS Custom Properties (Theme Variables)
   ======================================================================== */

:root {
  --color-primary: #1170a4;
  --color-primary-dark: #0f6594;
  --color-primary-light: #137bb4;
  --color-primary-lightest: #1692d5;
  --color-bg: #ffffff;
  --color-bg-secondary: #f6f8fa;
  --color-text: #1c1e21;
  --color-text-secondary: #606770;
  --color-border: #dadde1;
  --color-code-bg: #f6f8fa;
  --color-link: var(--color-primary);
  --color-sidebar-active: rgba(0, 0, 0, 0.05);
  --navbar-height: 60px;
  --sidebar-width: 300px;
  --content-max-width: 1140px;
  --footer-bg: #303846;
  --footer-text: #b0b3b8;
}

[data-theme="dark"] {
  --color-primary: #66bce7;
  --color-primary-dark: #49afe2;
  --color-primary-light: #83c9ec;
  --color-primary-lightest: #bce2f5;
  --color-bg: #1b1b1d;
  --color-bg-secondary: #242526;
  --color-text: #e3e3e3;
  --color-text-secondary: #b0b3b8;
  --color-border: #3e4042;
  --color-code-bg: #2d2d2d;
  --color-link: var(--color-primary);
  --color-sidebar-active: rgba(255, 255, 255, 0.05);
  --footer-bg: #18191a;
  --footer-text: #b0b3b8;
}

/* ========================================================================
   Reset & Base
   ======================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  font-size: 100%;
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--navbar-height) + 16px);
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, Cantarell, "Noto Sans", sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.65;
  color: var(--color-text);
  background-color: var(--color-bg);
  word-wrap: break-word;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: var(--color-link);
  text-decoration: none;
  transition: color 200ms cubic-bezier(0.08, 0.52, 0.52, 1);
}

a:hover {
  text-decoration: underline;
}

img {
  max-width: 100%;
}

hr {
  background-color: var(--color-border);
  border: 0;
  height: 1px;
  margin: 1.5rem 0;
}

/* ========================================================================
   Navbar
   ======================================================================== */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  background-color: var(--color-bg);
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.1);
  display: flex;
  align-items: center;
  padding: 0 1rem;
  z-index: 100;
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.5rem;
  margin-right: 1.5rem;
  flex-shrink: 0;
}

.navbar__brand:hover {
  text-decoration: none;
}

.navbar__logo {
  height: 32px;
  width: auto;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex: 1;
}

.navbar__link {
  color: var(--color-text);
  font-weight: 500;
  padding: 0.25rem 0.75rem;
  white-space: nowrap;
}

.navbar__link:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.navbar__link--active {
  color: var(--color-primary);
}

.navbar__right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-left: auto;
}

.navbar__github-link {
  color: var(--color-text);
  font-weight: 500;
}

.navbar__github-link:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.navbar__github-link::after {
  content: "";
  display: inline-block;
  width: 16px;
  height: 16px;
  margin-left: 4px;
  vertical-align: middle;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill='%231c1e21' d='M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z'/%3E%3C/svg%3E");
  background-size: contain;
  background-repeat: no-repeat;
  opacity: 0.5;
}

[data-theme="dark"] .navbar {
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
}

[data-theme="dark"] .navbar__github-link::after {
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 24 24' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath fill='%23e3e3e3' d='M21 13v10h-21v-19h12v2h-10v15h17v-8h2zm3-12h-10.988l4.035 4-6.977 7.07 2.828 2.828 6.977-7.07 4.125 4.172v-11z'/%3E%3C/svg%3E");
}

.theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  cursor: pointer;
  padding: 6px 8px;
  font-size: 1.1rem;
  line-height: 1;
  color: var(--color-text);
  display: flex;
  align-items: center;
}

.theme-toggle:hover {
  background-color: var(--color-bg-secondary);
}

/* Sun/moon icons */
.theme-toggle__light,
.theme-toggle__dark {
  display: none;
}

[data-theme="light"] .theme-toggle__light {
  display: inline;
}

[data-theme="dark"] .theme-toggle__dark {
  display: inline;
}

.hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  color: var(--color-text);
  font-size: 1.5rem;
  line-height: 1;
}

/* ========================================================================
   Layout
   ======================================================================== */

.layout {
  display: flex;
  margin-top: var(--navbar-height);
  min-height: calc(100vh - var(--navbar-height));
}

/* ========================================================================
   Sidebar
   ======================================================================== */

.sidebar {
  position: fixed;
  top: var(--navbar-height);
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  overflow-y: auto;
  padding: 1rem 0;
  border-right: 1px solid var(--color-border);
  background-color: var(--color-bg);
  z-index: 90;
  scrollbar-width: thin;
}

.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-thumb {
  background-color: var(--color-border);
  border-radius: 3px;
}

.sidebar ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sidebar > ul {
  padding: 0 0.75rem;
}

.sidebar li {
  margin: 0;
}

.sidebar__link {
  display: block;
  padding: 0.375rem 0.75rem;
  color: var(--color-text-secondary);
  font-weight: 500;
  line-height: 1.25;
  border-radius: 0.25rem;
  text-decoration: none;
  transition: background-color 0.15s, color 0.15s;
}

.sidebar__link:hover {
  background-color: var(--color-bg-secondary);
  color: var(--color-text);
  text-decoration: none;
}

.sidebar__link--active {
  background-color: var(--color-sidebar-active);
  color: var(--color-primary);
  font-weight: 600;
}

/* Category headers */
.sidebar__category {
  margin-top: 0.25rem;
}

.sidebar__category-header {
  display: flex;
  align-items: center;
  padding: 0.375rem 0.75rem;
  cursor: pointer;
  color: var(--color-text);
  font-weight: 700;
  line-height: 1.25;
  border-radius: 0.25rem;
  user-select: none;
}

.sidebar__category-header:hover {
  background-color: var(--color-bg-secondary);
}

.sidebar__chevron {
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 5px solid var(--color-text-secondary);
  border-top: 4px solid transparent;
  border-bottom: 4px solid transparent;
  margin-right: 8px;
  transition: transform 0.2s;
  flex-shrink: 0;
}

.sidebar__category--expanded > .sidebar__category-header .sidebar__chevron {
  transform: rotate(90deg);
}

.sidebar__category-children {
  display: none;
}

/* Nested lists get left padding for visual indentation.
   Aligns child items with the category label text (past the chevron icon).
   Uses higher specificity to override .sidebar ul { padding: 0 } */
.sidebar .sidebar__category-children {
  padding-left: 1.6rem;
}

.sidebar__category--expanded > .sidebar__category-children {
  display: block;
}

.sidebar-overlay {
  display: none;
}

/* ========================================================================
   Content
   ======================================================================== */

.content {
  flex: 1;
  margin-left: var(--sidebar-width);
  padding: 2rem 4rem;
  display: flex;
  justify-content: center;
}

.content__inner {
  max-width: var(--content-max-width);
  width: 100%;
}

/* Typography — matching Docusaurus .markdown context rules */
.content h1,
.content h2,
.content h3,
.content h4,
.content h5,
.content h6 {
  font-weight: 700;
  line-height: 1.25;
}

.content h1 {
  font-size: 3rem;
  margin: 0 0 1.5625rem 0;
}

.content h2 {
  font-size: 2rem;
  margin: 2.5rem 0 1.25rem 0;
}

.content h3 {
  font-size: 1.5rem;
  margin: 1.875rem 0 1.25rem 0;
}

.content h4 {
  font-size: 1rem;
  margin: 1.5625rem 0 1.25rem 0;
}

.content h5 {
  font-size: 0.875rem;
  margin: 1.5625rem 0 1.25rem 0;
}

.content h6 {
  font-size: 0.85rem;
  margin: 1.5625rem 0 1.25rem 0;
}

.content p {
  margin: 0 0 1.25rem 0;
}

.content ul, .content ol {
  margin: 0 0 1.25rem 0;
  padding-left: 2rem;
}

.content li + li {
  margin-top: 0.25rem;
}

.content li {
  word-wrap: break-word;
}

.content li > p {
  margin-top: 1rem;
}

.content li > ul, .content li > ol {
  margin-top: 0;
  margin-bottom: 0;
}

.content blockquote {
  border-left: 2px solid var(--color-border);
  color: #444950;
  margin: 0 0 1.25rem 0;
  padding: 0 1rem;
}

[data-theme="dark"] .content blockquote {
  color: var(--color-text-secondary);
}

/* Inline code — user's custom.css set --ifm-code-font-size: 100% */
.content code {
  background-color: var(--color-code-bg);
  border: 0.1rem solid rgba(0, 0, 0, 0.1);
  border-radius: 0.4rem;
  padding: 0.1rem 0.3rem;
  font-size: 100%;
  font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  vertical-align: middle;
}

[data-theme="dark"] .content code {
  border-color: rgba(255, 255, 255, 0.1);
  background-color: rgba(255, 255, 255, 0.1);
}

/* Code blocks */
.content pre {
  background-color: var(--color-code-bg);
  border-radius: 0.4rem;
  padding: 1rem;
  overflow: auto;
  margin: 0 0 1.25rem 0;
  font: 100% / 1.45 SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.content pre code {
  background-color: transparent;
  border: none;
  padding: 0;
  border-radius: 0;
  font-size: 100%;
  line-height: inherit;
  vertical-align: initial;
}

/* ========================================================================
   Tables
   ======================================================================== */

.table-wrapper {
  overflow-x: auto;
  margin: 0 0 1rem 0;
}

.content table {
  border-collapse: collapse;
  display: block;
  overflow: auto;
  width: 100%;
  margin: 0 0 1.25rem 0;
}

.content thead {
  background-color: rgba(0, 0, 0, 0.03);
}

[data-theme="dark"] .content thead {
  background-color: rgba(255, 255, 255, 0.07);
}

.content thead tr {
  border-bottom: 2px solid var(--color-border);
}

.content th {
  font-weight: 700;
  text-align: left;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
}

.content td {
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  vertical-align: top;
}

.content tr:nth-child(2n) {
  background-color: rgba(0, 0, 0, 0.03);
}

[data-theme="dark"] .content tr:nth-child(2n) {
  background-color: rgba(255, 255, 255, 0.07);
}

/* ========================================================================
   Tabs
   ======================================================================== */

.tabs {
  margin: 1rem 0;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.tabs__nav {
  display: flex;
  border-bottom: 1px solid var(--color-border);
  background-color: var(--color-bg-secondary);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  margin: 0;
  padding: 0;
}

.tabs__nav::-webkit-scrollbar {
  display: none;
}

.tabs__tab {
  padding: 0.625rem 1rem;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  white-space: nowrap;
  font-family: inherit;
  transition: color 0.15s, border-color 0.15s;
}

.tabs__tab:hover {
  color: var(--color-text);
}

.tabs__tab--active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  background-color: var(--color-bg);
}

.tabs__panel {
  display: none;
  padding: 1rem;
}

.tabs__panel--active {
  display: block;
}

/* ========================================================================
   Admonitions
   ======================================================================== */

.admonition {
  border-left: 4px solid;
  padding: 1rem 1.25rem;
  margin: 1rem 0;
  border-radius: 0 8px 8px 0;
}

.admonition__title {
  font-weight: 700;
  margin-bottom: 0.5rem;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

.admonition p:last-child {
  margin-bottom: 0;
}

.admonition--tip {
  border-color: #00a400;
  background-color: rgba(0, 164, 0, 0.08);
}

.admonition--tip .admonition__title {
  color: #00a400;
}

.admonition--note, .admonition--info {
  border-color: #4a9eff;
  background-color: rgba(74, 158, 255, 0.08);
}

.admonition--note .admonition__title,
.admonition--info .admonition__title {
  color: #4a9eff;
}

.admonition--warning, .admonition--caution {
  border-color: #e6a700;
  background-color: rgba(230, 167, 0, 0.08);
}

.admonition--warning .admonition__title,
.admonition--caution .admonition__title {
  color: #e6a700;
}

.admonition--danger {
  border-color: #e13238;
  background-color: rgba(225, 50, 56, 0.08);
}

.admonition--danger .admonition__title {
  color: #e13238;
}

/* ========================================================================
   Image Classes (from docs.css / images.css)
   ======================================================================== */

.center-image {
  display: block;
  margin: 0 auto 20px auto;
}

.center-images {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin: 0 10px;
}

.center-images img {
  display: inline-block;
  margin: 20px;
}

.icon-container {
  text-align: center;
}

.center-icon {
  display: inline-block;
  margin-right: 10px;
  vertical-align: middle;
  height: 32px;
}

.right-aligned-icon {
  float: right;
  margin-left: 10px;
}

/* ========================================================================
   Prev/Next Navigation
   ======================================================================== */

.pagination {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
  gap: 1rem;
}

.pagination__link {
  display: flex;
  flex-direction: column;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-primary);
  text-decoration: none;
  max-width: 48%;
  transition: border-color 0.15s;
}

.pagination__link:hover {
  border-color: var(--color-primary);
  text-decoration: none;
}

.pagination__link--next {
  margin-left: auto;
  text-align: right;
}

.pagination__label {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.25rem;
}

.pagination__title {
  font-weight: 600;
  font-size: 0.9rem;
}

/* ========================================================================
   Footer
   ======================================================================== */

.footer {
  background-color: var(--footer-bg);
  color: var(--footer-text);
  padding: 3rem 2rem 2rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.footer__title {
  color: #ffffff;
  font-weight: 700;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.footer__links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer__links li {
  margin-bottom: 0.5rem;
}

.footer__links a {
  color: var(--footer-text);
  font-size: 0.875rem;
}

.footer__links a:hover {
  color: #ffffff;
}

.footer__copyright {
  text-align: center;
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.8125rem;
  color: var(--footer-text);
}

/* ========================================================================
   Landing Page
   ======================================================================== */

.hero {
  background-color: var(--color-primary);
  padding: 4rem 2rem;
  text-align: center;
}

.hero__logo {
  max-width: 800px;
  width: 100%;
  height: auto;
  margin: 0 auto;
}

.hero__logo--light {
  display: block;
}

.hero__logo--dark {
  display: none;
}

[data-theme="dark"] .hero__logo--light {
  display: none;
}

[data-theme="dark"] .hero__logo--dark {
  display: block;
}

.hero__tagline {
  font-size: 1.25rem;
  color: #ffffff;
  margin: 1.5rem 0;
  opacity: 0.9;
}

.hero__cta {
  display: inline-block;
  padding: 0.75rem 2rem;
  border: 2px solid #ffffff;
  border-radius: 8px;
  color: #ffffff;
  font-size: 1.1rem;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 0.2s, color 0.2s;
}

.hero__cta:hover {
  background-color: #ffffff;
  color: var(--color-primary);
  text-decoration: none;
}

.features {
  display: flex;
  justify-content: center;
  padding: 3rem 2rem;
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.feature {
  flex: 1;
  max-width: 340px;
  text-align: center;
  padding: 1rem;
}

.feature__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.feature__description {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Landing page has no sidebar */
.landing-page .layout {
  display: block;
}

.landing-page .content {
  display: block;
  margin-left: 0;
  max-width: none;
  padding: 0;
}

/* ========================================================================
   Responsive (≤996px)
   ======================================================================== */

@media screen and (max-width: 996px) {
  .hamburger {
    display: block;
  }

  .navbar__links {
    display: none;
  }

  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.25s ease;
    z-index: 95;
  }

  .sidebar--open {
    transform: translateX(0);
  }

  .sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 94;
    display: none;
  }

  .sidebar-overlay--visible {
    display: block;
  }

  .content {
    margin-left: 0;
    padding: 1.5rem 1rem;
  }

  .hero {
    padding: 2rem 1rem;
  }

  .features {
    flex-direction: column;
    align-items: center;
    padding: 2rem 1rem;
  }

  .footer__grid {
    grid-template-columns: 1fr;
  }

  .pagination {
    flex-direction: column;
  }

  .pagination__link {
    max-width: 100%;
  }
}

/* ========================================================================
   Prism.js Theme Overrides
   ======================================================================== */

/* Light theme uses default Prism styles */

/* Dark theme overrides */
[data-theme="dark"] pre[class*="language-"],
[data-theme="dark"] code[class*="language-"] {
  color: #f8f8f2;
  text-shadow: none;
}

[data-theme="dark"] pre[class*="language-"] {
  background-color: var(--color-code-bg);
}

[data-theme="dark"] .token.comment,
[data-theme="dark"] .token.prolog,
[data-theme="dark"] .token.doctype,
[data-theme="dark"] .token.cdata {
  color: #6272a4;
}

[data-theme="dark"] .token.punctuation {
  color: #f8f8f2;
}

[data-theme="dark"] .token.property,
[data-theme="dark"] .token.tag,
[data-theme="dark"] .token.boolean,
[data-theme="dark"] .token.number,
[data-theme="dark"] .token.constant,
[data-theme="dark"] .token.symbol {
  color: #bd93f9;
}

[data-theme="dark"] .token.selector,
[data-theme="dark"] .token.attr-name,
[data-theme="dark"] .token.string,
[data-theme="dark"] .token.char,
[data-theme="dark"] .token.builtin {
  color: #50fa7b;
}

[data-theme="dark"] .token.operator,
[data-theme="dark"] .token.entity,
[data-theme="dark"] .token.url,
[data-theme="dark"] .token.variable {
  color: #f8f8f2;
  background: none;
}

[data-theme="dark"] .token.atrule,
[data-theme="dark"] .token.attr-value,
[data-theme="dark"] .token.function,
[data-theme="dark"] .token.class-name {
  color: #f1fa8c;
}

[data-theme="dark"] .token.keyword {
  color: #ff79c6;
}

[data-theme="dark"] .token.regex,
[data-theme="dark"] .token.important {
  color: #ffb86c;
}