/* ============================================================
   FONTS
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* ============================================================
   BRAND TOKENS  (Hydron design system)
   ============================================================ */

:root {
  /* Cyan accent scale */
  --brand-950: #0c0a09;
  --brand-900: #141211;
  --brand-800: #1c1917;
  --brand-700: #242120;
  --brand-600: #0094b3;
  --brand-500: #00b4d8;
  --brand-400: #38d4f0;
  --brand-300: #7de8f7;
  --accent-600: #008fa8;
  --accent-500: #38d4f0;
  --accent-400: #5ce8f5;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
}

/* ============================================================
   LIGHT SCHEME
   ============================================================ */

[data-md-color-scheme="default"] {
  --surface-0:  #fafaf9;
  --surface-1:  #ffffff;
  --surface-2:  #fafaf9;
  --surface-3:  #f0edea;
  --border-0:   #ebe9e6;
  --border-1:   #c9c5c0;
  --text-strong: #1c1917;
  --text-body:   #1c1917;
  --text-soft:   #78716c;
  --text-mute:   #a8a29e;

  --md-primary-fg-color:        #1c1917;
  --md-primary-fg-color--light: #292524;
  --md-primary-fg-color--dark:  #0c0a09;
  --md-accent-fg-color:         var(--brand-500);
  --md-accent-fg-color--transparent: rgba(0, 180, 216, 0.10);

  --md-default-bg-color:          var(--surface-1);
  --md-default-fg-color:          var(--text-body);
  --md-default-fg-color--light:   var(--text-soft);
  --md-default-fg-color--lighter: var(--text-mute);

  --md-typeset-color:        var(--text-body);
  --md-typeset-a-color:      var(--brand-500);
  --md-typeset-kbd-color:    var(--text-strong);
  --md-typeset-kbd-accent-color: var(--surface-1);
  --md-typeset-kbd-border-color: var(--border-1);
  --md-typeset-mark-color:   rgba(0, 180, 216, 0.14);
  --md-code-bg-color:        #f5f3f0;
  --md-code-fg-color:        #1c1917;

  --md-admonition-fg-color:  var(--text-body);
  --md-admonition-bg-color:  var(--surface-1);
}

/* ============================================================
   DARK SCHEME
   ============================================================ */

[data-md-color-scheme="slate"] {
  --surface-0:  #0c0a09;
  --surface-1:  #141211;
  --surface-2:  #1c1917;
  --surface-3:  #242120;
  --border-0:   #292524;
  --border-1:   #3a3533;
  --text-strong: #fafaf9;
  --text-body:   #e7e5e4;
  --text-soft:   #a8a29e;
  --text-mute:   #78716c;

  --md-primary-fg-color:        #0c0a09;
  --md-primary-fg-color--light: #1c1917;
  --md-primary-fg-color--dark:  #070605;
  --md-accent-fg-color:         var(--brand-400);
  --md-accent-fg-color--transparent: rgba(56, 212, 240, 0.12);

  --md-default-bg-color:          var(--surface-0);
  --md-default-bg-color--light:   var(--surface-1);
  --md-default-bg-color--lighter: var(--surface-2);
  --md-default-bg-color--lightest: var(--surface-3);
  --md-default-fg-color:          var(--text-body);
  --md-default-fg-color--light:   var(--text-soft);
  --md-default-fg-color--lighter: var(--text-mute);
  --md-default-fg-color--lightest: rgba(120, 113, 108, 0.6);

  --md-typeset-color:        var(--text-body);
  --md-typeset-a-color:      var(--brand-400);
  --md-code-bg-color:        #111009;
  --md-code-fg-color:        #e7e5e4;
  --md-typeset-mark-color:   rgba(56, 212, 240, 0.22);

  --md-admonition-fg-color:  var(--text-body);
  --md-admonition-bg-color:  var(--surface-1);
}

/* ============================================================
   GLOBAL
   ============================================================ */

html { scroll-behavior: smooth; }

body {
  -webkit-font-smoothing: antialiased;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

.md-typeset pre,
.md-typeset code,
.md-typeset kbd {
  font-family: 'JetBrains Mono', ui-monospace, Menlo, Monaco, 'Cascadia Code', monospace;
}

/* ============================================================
   HEADER
   ============================================================ */

.md-header {
  background: var(--brand-950);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  box-shadow: 0 1px 0 rgba(255,255,255,0.04), 0 2px 12px rgba(0,0,0,0.32);
}

.md-header__title { font-weight: 700; letter-spacing: -0.01em; }

/* Always show site name (not scrolled-to page title) */
.md-header__topic:nth-child(2) { display: none !important; }
.md-header__topic:first-child { transform: translateX(0) !important; opacity: 1 !important; }

/* Repo + source icon — hide */
.md-header__source,
.md-nav__source { display: none; }

/* tabs bar hidden — navigation lives in sidebar */

/* ============================================================
   PAGE BACKGROUND
   ============================================================ */

.md-main {
  background:
    radial-gradient(ellipse 700px 400px at 0% 0%, rgba(0,180,216,0.06) 0%, transparent 55%),
    linear-gradient(180deg, var(--surface-1) 0%, var(--surface-0) 100%);
}

[data-md-color-scheme="slate"] .md-main {
  background:
    radial-gradient(ellipse 700px 400px at 0% 0%, rgba(0,180,216,0.10) 0%, transparent 55%),
    linear-gradient(180deg, var(--surface-0) 0%, #070605 100%);
}

/* ============================================================
   SIDEBAR — LEFT NAV (full nav + integrated TOC)
   ============================================================ */

.md-sidebar--primary .md-sidebar__inner {
  border-right: 1px solid var(--border-0);
  padding-right: 0;
}

/* Site name / section headings in sidebar */
.md-nav__title {
  font-size: 0.51rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-mute);
  padding: 1.2rem 0.8rem 0.4rem;
}

/* Top-level nav items */
.md-nav--primary > .md-nav__list > .md-nav__item > .md-nav__link {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-body);
  padding: 0.42rem 0.8rem;
  border-radius: var(--radius-sm);
  transition: color 0.15s, background 0.15s;
  margin-bottom: 1px;
}

/* All nav links baseline */
.md-nav__item .md-nav__link {
  font-size: 0.63rem;
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.8rem;
  color: var(--text-soft);
  transition: color 0.15s, background 0.15s;
}

.md-nav__item .md-nav__link:hover {
  color: var(--text-strong);
  background: var(--surface-2);
}

/* Active page */
.md-nav__item--active > .md-nav__link,
.md-nav__link--active {
  color: var(--brand-500) !important;
  font-weight: 600;
  background: var(--md-accent-fg-color--transparent) !important;
}

[data-md-color-scheme="slate"] .md-nav__item--active > .md-nav__link,
[data-md-color-scheme="slate"] .md-nav__link--active {
  color: var(--brand-300) !important;
  background: rgba(85, 128, 255, 0.12) !important;
}

/* Expand arrow */
.md-nav__icon { color: var(--text-mute); }

/* Divider between nav and integrated TOC */
.md-nav--integrated > .md-nav__list > .md-nav__item--active .md-nav {
  border-top: 1px solid var(--border-0);
  margin-top: 0.6rem;
  padding-top: 0.5rem;
}

/* Integrated TOC headings */
.md-nav--integrated .md-nav--secondary .md-nav__link {
  font-size: 0.58rem;
  color: var(--text-soft);
  padding: 0.26rem 0.8rem 0.26rem 1.3rem;
  border-radius: var(--radius-sm);
  border-left: 2px solid transparent;
}

.md-nav--integrated .md-nav--secondary .md-nav__link:hover {
  color: var(--text-strong);
  background: var(--surface-2);
}

.md-nav--integrated .md-nav--secondary .md-nav__link--active {
  color: var(--brand-500) !important;
  border-left-color: var(--brand-500);
  background: transparent !important;
  font-weight: 600;
}

[data-md-color-scheme="slate"] .md-nav--integrated .md-nav--secondary .md-nav__link--active {
  color: var(--brand-300) !important;
  border-left-color: var(--brand-300);
}

/* TOC section label ("On this page") */
.md-nav--integrated .md-nav--secondary > .md-nav__title {
  padding-left: 0.8rem;
  font-size: 0.50rem;
  color: var(--text-mute);
}

/* ============================================================
   CONTENT
   ============================================================ */

.md-content__inner {
  max-width: 900px;
  padding: 0 1.6rem 3rem;
}

.md-typeset {
  color: var(--text-body);
  font-size: 0.68rem;
  line-height: 1.75;
}

/* Headings */
.md-typeset h1 {
  font-size: 1.55rem;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--text-strong);
  margin-bottom: 0.4em;
  line-height: 1.2;
}

.md-typeset h2 {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--text-strong);
  margin-top: 2.4rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--border-0);
}

.md-typeset h3 {
  font-size: 0.79rem;
  font-weight: 650;
  color: var(--text-strong);
  margin-top: 1.6rem;
}

.md-typeset h4 {
  font-size: 0.69rem;
  font-weight: 650;
  color: var(--text-soft);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-top: 1.2rem;
}

/* Body text */
.md-typeset p, .md-typeset li { color: var(--text-body); }

/* Links */
.md-typeset a {
  color: var(--brand-500);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.14s, border-color 0.14s;
}
.md-typeset a:hover {
  color: var(--brand-400);
  border-bottom-color: var(--brand-300);
}
[data-md-color-scheme="slate"] .md-typeset a { color: var(--brand-300); }
[data-md-color-scheme="slate"] .md-typeset a:hover { color: var(--brand-400); }

/* Horizontal rule */
.md-typeset hr {
  border: none;
  border-top: 1px solid var(--border-0);
  margin: 2.4rem 0;
}

/* Blockquote */
.md-typeset blockquote {
  border-left: 3px solid var(--brand-400);
  background: var(--surface-2);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: 0.8rem 1.2rem;
  color: var(--text-soft);
  font-style: normal;
}

/* ============================================================
   IMAGES
   ============================================================ */

.md-typeset img {
  display: block;
  margin: 1.6rem auto;
  max-width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-0);
  box-shadow: 0 4px 24px rgba(10, 20, 50, 0.10), 0 1px 4px rgba(10, 20, 50, 0.07);
  transition: box-shadow 0.2s, transform 0.2s;
}

.md-typeset img:hover {
  box-shadow: 0 8px 32px rgba(10, 20, 50, 0.16), 0 2px 8px rgba(10, 20, 50, 0.10);
  transform: translateY(-2px);
}

[data-md-color-scheme="slate"] .md-typeset img {
  border-color: var(--border-1);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.40), 0 1px 4px rgba(0, 0, 0, 0.30);
}

[data-md-color-scheme="slate"] .md-typeset img:hover {
  box-shadow: 0 8px 36px rgba(0, 0, 0, 0.55), 0 2px 10px rgba(0, 0, 0, 0.35);
}

/* ============================================================
   INLINE CODE
   ============================================================ */

.md-typeset code {
  background: var(--md-code-bg-color);
  color: var(--md-code-fg-color);
  border: 1px solid var(--border-0);
  border-radius: var(--radius-sm);
  padding: 0.13em 0.40em;
  font-size: 0.72em;
  font-weight: 500;
}

/* ============================================================
   CODE BLOCKS
   ============================================================ */

.md-typeset .highlight,
.md-typeset .highlighttable {
  background: var(--md-code-bg-color);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-0);
  box-shadow: 0 4px 20px rgba(10, 20, 50, 0.08), 0 1px 4px rgba(10, 20, 50, 0.06);
  overflow: hidden;
  margin: 1.4em 0;
}

[data-md-color-scheme="slate"] .md-typeset .highlight,
[data-md-color-scheme="slate"] .md-typeset .highlighttable {
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.35), 0 1px 4px rgba(0, 0, 0, 0.25);
  border-color: var(--border-1);
}

/* macOS-style dots header on every code block */
.md-typeset .highlight::before,
.md-typeset .highlighttable::before {
  content: "";
  display: block;
  height: 2.2rem;
  background: var(--surface-3);
  border-bottom: 1px solid var(--border-0);
  background-image:
    radial-gradient(circle, #ff5f57 50%, transparent 50%),
    radial-gradient(circle, #febc2e 50%, transparent 50%),
    radial-gradient(circle, #28c840 50%, transparent 50%);
  background-size: 10px 10px, 10px 10px, 10px 10px;
  background-position: 14px center, 30px center, 46px center;
  background-repeat: no-repeat;
  flex-shrink: 0;
}

.md-typeset pre {
  background: transparent;
  border: none;
  border-radius: 0;
  box-shadow: none;
  margin: 0;
}

.md-typeset pre > code {
  border: none;
  background: transparent;
  border-radius: 0;
  padding: 1em 1.2em;
  font-size: 0.63rem;
  line-height: 1.75;
  display: block;
}

/* Line numbers table layout */
.md-typeset .highlighttable td.linenos {
  background: var(--md-code-bg-color);
  border-right: 1px solid var(--border-0);
  padding: 1em 0.75em 1em 1em;
  user-select: none;
}

.md-typeset .highlighttable td.linenos .linenodiv pre {
  background: transparent;
  padding: 0;
  color: var(--text-mute);
  font-size: 0.63rem;
  line-height: 1.75;
}

.md-typeset .highlighttable td.code {
  padding: 0;
  width: 100%;
}

.md-typeset .highlighttable td.code pre > code {
  padding: 1em 1.2em;
}

/* Code block title bar — replaces the dots when a filename is present */
.md-typeset .highlight .filename {
  background: var(--surface-3);
  border-bottom: 1px solid var(--border-0);
  color: var(--text-soft);
  font-size: 0.57rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  padding: 0 1rem 0 4rem;
  height: 2.2rem;
  display: flex;
  align-items: center;
}

/* When filename is present, skip the ::before dots */
.md-typeset .highlight:has(.filename)::before {
  display: none;
}

/* Shell prompt — decorative $, excluded from copy */
.highlight.language-bash pre > code span[id^="__span"]::before,
.highlight.language-shell pre > code span[id^="__span"]::before,
.highlight.language-sh pre > code span[id^="__span"]::before,
.highlight.language-powershell pre > code span[id^="__span"]::before,
.highlight.language-ps1 pre > code span[id^="__span"]::before {
  content: "$ ";
  color: var(--text-mute);
  user-select: none;
  -webkit-user-select: none;
}

/* Copy toast */
.md-dialog {
  background-color: var(--surface-3);
  color: var(--text-body);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
}
.md-dialog__inner p {
  color: var(--text-body);
}

/* Copy button */
.md-clipboard {
  color: var(--text-mute);
  background: var(--surface-2);
  border: 1px solid var(--border-0);
  border-radius: var(--radius-sm);
  padding: 0.2em 0.4em;
  transition: color 0.15s, background 0.15s, border-color 0.15s;
  top: 2.8rem;
}
.md-clipboard:hover {
  color: var(--brand-400);
  background: var(--surface-3);
  border-color: var(--brand-400);
}

/* ============================================================
   TABS (pymdownx.tabbed)
   ============================================================ */

.md-typeset .tabbed-labels {
  border-bottom: 1px solid var(--border-0);
  gap: 0;
}

.md-typeset .tabbed-labels > label {
  font-size: 0.61rem;
  font-weight: 600;
  color: var(--text-soft);
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  margin-bottom: -1px;
  border: 1px solid transparent;
  transition: color 0.15s, background 0.15s;
}

.md-typeset .tabbed-labels > label:hover {
  color: var(--text-strong);
  background: var(--surface-2);
}

.md-typeset .tabbed-set > input:checked + label {
  color: var(--brand-500);
  background: var(--surface-1);
  border-color: var(--border-0) var(--border-0) var(--surface-1);
}

[data-md-color-scheme="slate"] .md-typeset .tabbed-set > input:checked + label {
  color: var(--brand-300);
  border-color: var(--border-0) var(--border-0) var(--surface-0);
}

.md-typeset .tabbed-content {
  border: 1px solid var(--border-0);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  padding: 1.2rem 1.4rem 0.8rem;
  background: var(--surface-1);
}

/* ============================================================
   ADMONITIONS
   ============================================================ */

.md-typeset .admonition,
.md-typeset details {
  border-radius: var(--radius-md);
  border: 1px solid var(--border-0);
  border-left-width: 3px;
  box-shadow: 0 2px 10px rgba(10, 20, 50, 0.05);
  font-size: 0.66rem;
}

.md-typeset .admonition-title,
.md-typeset summary {
  font-weight: 650;
  font-size: 0.61rem;
  letter-spacing: 0.01em;
  border-radius: calc(var(--radius-md) - 1px) calc(var(--radius-md) - 1px) 0 0;
}

/* tip */
.md-typeset .admonition.tip,
.md-typeset details.tip {
  border-left-color: var(--accent-500);
}
.md-typeset .tip > .admonition-title,
.md-typeset .tip > summary {
  background: rgba(0, 184, 217, 0.10);
  color: var(--accent-600);
}
.md-typeset .tip > .admonition-title::before,
.md-typeset .tip > summary::before {
  background-color: var(--accent-500);
}

/* info */
.md-typeset .admonition.info,
.md-typeset details.info {
  border-left-color: var(--brand-500);
}
.md-typeset .info > .admonition-title,
.md-typeset .info > summary {
  background: rgba(43, 92, 255, 0.10);
  color: var(--brand-600);
}
.md-typeset .info > .admonition-title::before,
.md-typeset .info > summary::before {
  background-color: var(--brand-500);
}

[data-md-color-scheme="slate"] .md-typeset .tip > .admonition-title,
[data-md-color-scheme="slate"] .md-typeset .tip > summary {
  color: var(--accent-400);
  background: rgba(0, 184, 217, 0.10);
}
[data-md-color-scheme="slate"] .md-typeset .info > .admonition-title,
[data-md-color-scheme="slate"] .md-typeset .info > summary {
  color: var(--brand-300);
  background: rgba(43, 92, 255, 0.10);
}

/* ============================================================
   TABLES
   ============================================================ */

.md-typeset table:not([class]) {
  border: 1px solid var(--border-0);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--surface-1);
  box-shadow: 0 2px 12px rgba(10, 20, 50, 0.05);
  display: table;
  width: 100%;
}

.md-typeset table:not([class]) thead {
  background: var(--surface-2);
  border-bottom: 1px solid var(--border-1);
}

.md-typeset table:not([class]) th {
  font-size: 0.55rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-soft);
  padding: 0.7rem 1rem;
}

.md-typeset table:not([class]) td {
  font-size: 0.65rem;
  padding: 0.65rem 1rem;
  border-top: 1px solid var(--border-0);
  color: var(--text-body);
  vertical-align: middle;
}

.md-typeset table:not([class]) tr:first-child td { border-top: none; }

.md-typeset table:not([class]) tr:hover td {
  background: var(--surface-2);
}

/* ============================================================
   KEYBOARD KEYS
   ============================================================ */

.md-typeset kbd {
  background: var(--surface-1);
  border: 1px solid var(--border-1);
  border-bottom-width: 2px;
  border-radius: 5px;
  box-shadow: none;
  font-size: 0.65em;
  padding: 0.1em 0.45em;
  color: var(--text-strong);
  font-family: inherit;
}

/* ============================================================
   NAVIGATION FOOTER (prev / next)
   ============================================================ */

.md-footer-nav {
  border-top: 1px solid var(--border-0);
  margin-top: 3rem;
}

.md-footer-nav__link {
  background: var(--surface-1);
  border: 1px solid var(--border-0);
  border-radius: var(--radius-md);
  margin: 0.4rem;
  padding: 1rem 1.4rem;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.md-footer-nav__link:hover {
  border-color: var(--brand-400);
  box-shadow: 0 4px 16px rgba(43, 92, 255, 0.10);
}

.md-footer-nav__title {
  font-size: 0.66rem;
  font-weight: 600;
  color: var(--text-strong);
}

.md-footer-nav__direction {
  font-size: 0.55rem;
  color: var(--text-mute);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}

/* ============================================================
   FOOTER
   ============================================================ */

.md-footer { background: var(--brand-950); }
.md-footer-meta { background: rgba(0,0,0,0.25); }
.md-footer__link { opacity: 0.7; transition: opacity 0.15s; }
.md-footer__link:hover { opacity: 1; }

/* ============================================================
   SEARCH
   ============================================================ */

.md-search__form {
  border-radius: var(--radius-md);
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.10);
}

.md-search__input { color: #fff; }
.md-search__input::placeholder { color: rgba(255,255,255,0.45); }

/* Search modal — dark text on the expanded white form background */
[data-md-color-scheme="default"] .md-search__form:focus-within .md-search__input {
  color: var(--text-strong);
}
[data-md-color-scheme="default"] .md-search__form:focus-within .md-search__input::placeholder {
  color: var(--text-mute);
}

/* ============================================================
   BREADCRUMB (navigation.path)
   ============================================================ */

.md-path {
  font-size: 0.62rem;
  color: var(--text-mute);
  padding: 0.4rem 0 0;
}

.md-path__item + .md-path__item::before { color: var(--text-mute); }

/* ============================================================
   BACK TO TOP
   ============================================================ */

.md-top {
  background: var(--surface-1);
  border: 1px solid var(--border-0);
  border-radius: 999px;
  box-shadow: 0 4px 16px rgba(10,20,60,0.12);
  color: var(--text-soft);
  font-size: 0.65rem;
  font-weight: 600;
  transition: box-shadow 0.15s, color 0.15s;
}

.md-top:hover {
  color: var(--brand-500);
  box-shadow: 0 6px 22px rgba(43,92,255,0.16);
}

/* ============================================================
   PROGRESS BAR (navigation.instant.progress)
   ============================================================ */

.md-progress { background: var(--brand-500); }

/* ============================================================
   CHANGELOG — version badge
   ============================================================ */

.md-typeset h2 > code {
  background: linear-gradient(135deg, var(--brand-500), var(--accent-500));
  color: #fff;
  border: none;
  font-size: 0.63em;
  padding: 0.18em 0.55em;
  border-radius: 999px;
  vertical-align: middle;
  font-weight: 700;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media screen and (max-width: 76.1875em) {
  .md-typeset h1 { font-size: 1.30rem; }
  .md-content__inner { padding: 0 0.8rem 2rem; }
}

@media screen and (max-width: 44.9375em) {
  .md-typeset h1 { font-size: 1.12rem; }
  .md-typeset .tabbed-content { padding: 0.9rem 0.9rem 0.6rem; }
}