/*!
 * html.style v2026.1.0
 * A modern web standards-based CSS framework
 * License: MIT
 * https://html.style
 */

/* ========================================
   CASCADE LAYERS
   ======================================== */

@layer reset, tokens, atoms, molecules, organisms, templates;

/* ========================================
   RESET LAYER
   ======================================== */

@layer reset {
  *,
  *::before,
  *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  html {
    -webkit-text-size-adjust: 100%;
    -moz-text-size-adjust: 100%;
    text-size-adjust: 100%;
  }

  body {
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  }

  img,
  picture,
  video,
  canvas,
  svg {
    display: block;
    max-width: 100%;
  }

  input,
  button,
  textarea,
  select {
    font: inherit;
  }

  p,
  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    overflow-wrap: break-word;
  }

  ul[role="list"],
  ol[role="list"] {
    list-style: none;
  }
}

/* ========================================
   TOKENS LAYER
   ======================================== */

@layer tokens {
  :root {
    /* Required for light-dark() function */
    color-scheme: light dark;

    /* ================================
       TIER 1: PRIMITIVES (--p- prefix)
       ================================ */

    /* Color Primitives: Brand */
    --p-brand-hue: 260;
    --p-brand-50: oklch(0.95 0.02 var(--p-brand-hue));
    --p-brand-100: oklch(0.9 0.04 var(--p-brand-hue));
    --p-brand-200: oklch(0.8 0.08 var(--p-brand-hue));
    --p-brand-300: oklch(0.7 0.12 var(--p-brand-hue));
    --p-brand-400: oklch(0.65 0.15 var(--p-brand-hue));
    --p-brand-500: oklch(0.6 0.18 var(--p-brand-hue));
    --p-brand-600: oklch(0.55 0.18 var(--p-brand-hue));
    --p-brand-700: oklch(0.45 0.16 var(--p-brand-hue));
    --p-brand-800: oklch(0.35 0.14 var(--p-brand-hue));
    --p-brand-900: oklch(0.2 0.1 var(--p-brand-hue));

    /* Color Primitives: Neutral */
    --p-neutral-50: oklch(0.98 0 0);
    --p-neutral-100: oklch(0.95 0 0);
    --p-neutral-200: oklch(0.9 0 0);
    --p-neutral-300: oklch(0.85 0 0);
    --p-neutral-400: oklch(0.7 0 0);
    --p-neutral-500: oklch(0.5 0 0);
    --p-neutral-600: oklch(0.4 0 0);
    --p-neutral-700: oklch(0.3 0 0);
    --p-neutral-800: oklch(0.2 0 0);
    --p-neutral-900: oklch(0.15 0 0);

    /* Spacing Primitives */
    --p-space-xs: 0.25rem;   /* 4px */
    --p-space-sm: 0.5rem;    /* 8px */
    --p-space-md: 1rem;      /* 16px */
    --p-space-lg: 1.5rem;    /* 24px */
    --p-space-xl: 2rem;      /* 32px */
    --p-space-2xl: 3rem;     /* 48px */
    --p-space-3xl: 4rem;     /* 64px */

    /* Typography Primitives */
    --p-font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --p-font-serif: Georgia, Cambria, "Times New Roman", Times, serif;
    --p-font-mono: ui-monospace, "SF Mono", Monaco, "Cascadia Mono", "Segoe UI Mono", "Roboto Mono", Menlo, Consolas, monospace;

    --p-text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --p-text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
    --p-text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
    --p-text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.5rem);
    --p-text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.875rem);
    --p-text-2xl: clamp(1.5rem, 1.3rem + 1vw, 2.25rem);
    --p-text-3xl: clamp(1.875rem, 1.6rem + 1.375vw, 3rem);

    /* Border Radius Primitives */
    --p-radius-sm: 0.25rem;
    --p-radius-md: 0.5rem;
    --p-radius-lg: 1rem;
    --p-radius-xl: 1.5rem;
    --p-radius-full: 9999px;

    /* Shadow Primitives */
    --p-shadow-sm: 0 1px 2px oklch(0 0 0 / 0.05);
    --p-shadow-md: 0 4px 6px oklch(0 0 0 / 0.1);
    --p-shadow-lg: 0 10px 15px oklch(0 0 0 / 0.15);
    --p-shadow-xl: 0 20px 25px oklch(0 0 0 / 0.2);

    /* ================================
       TIER 2: SEMANTIC TOKENS
       ================================ */

    /* Surface Colors - Theme-aware via light-dark() */
    --color-surface-base: light-dark(var(--p-neutral-50), var(--p-neutral-900));
    --color-surface-elevated: light-dark(oklch(1 0 0), oklch(0.2 0 0));
    --color-surface-sunken: light-dark(var(--p-neutral-100), oklch(0.1 0 0));
    --color-surface-overlay: light-dark(oklch(1 0 0 / 0.95), oklch(0.15 0 0 / 0.95));

    /* Text Colors */
    --color-text-primary: light-dark(var(--p-neutral-900), var(--p-neutral-50));
    --color-text-secondary: light-dark(var(--p-neutral-600), var(--p-neutral-400));
    --color-text-tertiary: light-dark(var(--p-neutral-500), var(--p-neutral-500));
    --color-text-inverse: light-dark(var(--p-neutral-50), var(--p-neutral-900));
    --color-text-link: light-dark(var(--p-brand-600), var(--p-brand-400));

    /* Action Colors */
    --color-action-primary: light-dark(var(--p-brand-600), oklch(0.7 0.2 var(--p-brand-hue)));
    --color-action-secondary: light-dark(var(--p-neutral-700), var(--p-neutral-300));

    /* Border Colors */
    --color-border-default: light-dark(var(--p-neutral-300), var(--p-neutral-700));
    --color-border-emphasis: light-dark(var(--p-neutral-500), var(--p-neutral-500));
    --color-border-subtle: light-dark(var(--p-neutral-200), var(--p-neutral-800));

    /* Feedback Colors */
    --color-feedback-success: light-dark(oklch(0.5 0.15 145), oklch(0.7 0.15 145));
    --color-feedback-warning: light-dark(oklch(0.65 0.18 85), oklch(0.75 0.18 85));
    --color-feedback-error: light-dark(oklch(0.55 0.22 25), oklch(0.7 0.22 25));
    --color-feedback-info: light-dark(oklch(0.6 0.15 250), oklch(0.7 0.15 250));

    /* Semantic Spacing */
    --space-inline: var(--p-space-md);
    --space-block: var(--p-space-lg);
    --space-gutter: var(--p-space-xl);
    --space-component: var(--p-space-sm);

    /* Semantic Typography */
    --font-heading: var(--p-font-sans);
    --font-body: var(--p-font-sans);
    --font-code: var(--p-font-mono);

    --text-heading-3xl: var(--p-text-3xl);
    --text-heading-2xl: var(--p-text-2xl);
    --text-heading-xl: var(--p-text-xl);
    --text-heading-lg: var(--p-text-lg);
    --text-body: var(--p-text-base);
    --text-small: var(--p-text-sm);
    --text-caption: var(--p-text-xs);

    /* ================================
       TIER 3: STATE TOKENS (Derived)
       ================================ */

    /* Action States - Derived via Relative Color Syntax */
    --color-action-hover: oklch(from var(--color-action-primary) calc(l + 0.1) c h);
    --color-action-active: oklch(from var(--color-action-primary) calc(l - 0.1) c h);
    --color-action-disabled: oklch(from var(--color-action-primary) l calc(c * 0.3) h / 0.5);
    --color-action-surface: oklch(from var(--color-action-primary) l c h / 0.1);
    --color-action-border: oklch(from var(--color-action-primary) calc(l - 0.2) c h);

    /* Link States */
    --color-text-link-hover: oklch(from var(--color-text-link) calc(l + 0.1) c h);
    --color-text-link-visited: oklch(from var(--color-text-link) l c calc(h + 30));

    /* Feedback Surface Variants */
    --color-feedback-success-surface: oklch(from var(--color-feedback-success) l c h / 0.1);
    --color-feedback-warning-surface: oklch(from var(--color-feedback-warning) l c h / 0.1);
    --color-feedback-error-surface: oklch(from var(--color-feedback-error) l c h / 0.1);
    --color-feedback-info-surface: oklch(from var(--color-feedback-info) l c h / 0.1);
  }

  /* Brand Theme Variants */
  :root[data-brand="blue"] {
    --p-brand-hue: 220;
  }

  :root[data-brand="green"] {
    --p-brand-hue: 145;
  }

  :root[data-brand="red"] {
    --p-brand-hue: 25;
  }

  :root[data-brand="orange"] {
    --p-brand-hue: 50;
  }

  /* High Contrast Mode Support */
  @media (forced-colors: active) {
    :root {
      --color-surface-base: Canvas;
      --color-text-primary: CanvasText;
      --color-action-primary: LinkText;
      --color-border-default: CanvasText;
    }
  }

  @media (prefers-contrast: more) {
    :root {
      --color-text-primary: light-dark(oklch(0 0 0), oklch(1 0 0));
      --color-text-secondary: light-dark(oklch(0.2 0 0), oklch(0.9 0 0));
      --color-border-default: light-dark(oklch(0.6 0 0), oklch(0.5 0 0));
    }
  }

  /* Print Theme (Always Light) */
  @media print {
    :root {
      color-scheme: light;
      --color-surface-base: white;
      --color-text-primary: black;
      --color-border-default: oklch(0.7 0 0);
    }
  }
}

/* ========================================
   ATOMS LAYER (Semantic HTML Only)
   ======================================== */

@layer atoms {
  html {
    font-family: var(--font-body);
    font-size: var(--text-body);
    color: var(--color-text-primary);
    background: var(--color-surface-base);
  }

  body {
    display: flex;
    flex-direction: column;
  }

  /* Typography */
  h1,
  h2,
  h3,
  h4,
  h5,
  h6 {
    font-family: var(--font-heading);
    font-variation-settings: "wght" 700;
    color: var(--color-text-primary);
    line-height: 1.2;
    margin-block-end: var(--space-block);
    text-wrap: balance;
  }

  h1 {
    font-size: var(--text-heading-3xl);
  }

  h2 {
    font-size: var(--text-heading-2xl);
  }

  h3 {
    font-size: var(--text-heading-xl);
  }

  h4 {
    font-size: var(--text-heading-lg);
  }

  h5,
  h6 {
    font-size: var(--text-body);
  }

  p {
    margin-block-end: var(--space-block);
    max-inline-size: 70ch;
    text-wrap: pretty;
  }

  a {
    color: var(--color-text-link);
    text-decoration-thickness: 0.1em;
    text-underline-offset: 0.2em;
    transition: color 0.2s ease;
  }

  a:hover {
    color: var(--color-text-link-hover);
  }

  a:visited {
    color: var(--color-text-link-visited);
  }

  a:focus-visible {
    outline: 2px solid var(--color-action-primary);
    outline-offset: 2px;
    border-radius: var(--p-radius-sm);
  }

  strong,
  b {
    font-variation-settings: "wght" 600;
  }

  em,
  i {
    font-style: italic;
  }

  small {
    font-size: var(--text-small);
  }

  code,
  kbd,
  samp,
  pre {
    font-family: var(--font-code);
    font-size: 0.9em;
  }

  code {
    background: var(--color-surface-sunken);
    padding: 0.125em 0.375em;
    border-radius: var(--p-radius-sm);
  }

  pre {
    background: var(--color-surface-sunken);
    padding: var(--space-component);
    border-radius: var(--p-radius-md);
    overflow-x: auto;
  }

  pre code {
    background: none;
    padding: 0;
  }

  /* Lists */
  ul,
  ol {
    margin-block-end: var(--space-block);
    padding-inline-start: var(--space-gutter);
  }

  li {
    margin-block-end: var(--p-space-xs);
  }

  /* Interactive Elements */
  button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--p-space-xs);
    background: var(--color-action-primary);
    color: var(--color-text-inverse);
    border: none;
    border-radius: var(--p-radius-md);
    padding: var(--space-component) var(--space-inline);
    font: inherit;
    font-variation-settings: "wght" 500;
    cursor: pointer;
    transition: background 0.2s ease;
  }

  button:hover {
    background: var(--color-action-hover);
  }

  button:active {
    background: var(--color-action-active);
  }

  button:disabled {
    background: var(--color-action-disabled);
    cursor: not-allowed;
  }

  button:focus-visible {
    outline: 2px solid var(--color-action-primary);
    outline-offset: 2px;
  }

  /* Form Controls */
  input,
  textarea,
  select {
    background: var(--color-surface-base);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-default);
    border-radius: var(--p-radius-md);
    padding: var(--space-component);
    transition: border-color 0.2s ease;
  }

  input:focus,
  textarea:focus,
  select:focus {
    outline: 2px solid var(--color-action-primary);
    outline-offset: 0;
    border-color: var(--color-action-primary);
  }

  input::placeholder,
  textarea::placeholder {
    color: var(--color-text-tertiary);
  }

  label {
    display: block;
    margin-block-end: var(--p-space-xs);
    font-variation-settings: "wght" 500;
    color: var(--color-text-primary);
  }

  fieldset {
    border: 1px solid var(--color-border-default);
    border-radius: var(--p-radius-md);
    padding: var(--space-component);
    margin-block-end: var(--space-block);
  }

  legend {
    font-variation-settings: "wght" 600;
    padding-inline: var(--p-space-xs);
  }

  /* Tables */
  table {
    width: 100%;
    border-collapse: collapse;
    margin-block-end: var(--space-block);
  }

  th,
  td {
    text-align: start;
    padding: var(--space-component);
    border-bottom: 1px solid var(--color-border-default);
  }

  th {
    font-variation-settings: "wght" 600;
    background: var(--color-surface-sunken);
  }

  /* Media */
  img,
  picture,
  video {
    border-radius: var(--p-radius-md);
  }

  figure {
    margin-block-end: var(--space-block);
  }

  figcaption {
    margin-block-start: var(--p-space-xs);
    font-size: var(--text-small);
    color: var(--color-text-secondary);
    text-align: center;
  }

  /* Semantic Sections */
  header,
  footer,
  main,
  section,
  article,
  aside,
  nav {
    display: block;
  }

  hr {
    border: none;
    border-block-start: 1px solid var(--color-border-default);
    margin-block: var(--space-gutter);
  }

  /* Details/Summary */
  details {
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border-default);
    border-radius: var(--p-radius-md);
    padding: var(--space-component);
    margin-block-end: var(--space-block);
  }

  summary {
    cursor: pointer;
    font-variation-settings: "wght" 600;
    padding: var(--p-space-xs);
    margin: calc(-1 * var(--space-component));
    margin-block-end: 0;
    border-radius: var(--p-radius-md);
    transition: background 0.2s ease;
  }

  summary:hover {
    background: var(--color-surface-sunken);
  }

  details[open] summary {
    margin-block-end: var(--space-component);
  }

  /* Dialog */
  dialog {
    background: var(--color-surface-overlay);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-default);
    border-radius: var(--p-radius-lg);
    padding: var(--space-gutter);
    max-inline-size: min(90vw, 600px);
    box-shadow: var(--p-shadow-xl);
  }

  dialog::backdrop {
    background: oklch(0 0 0 / 0.5);
    backdrop-filter: blur(4px);
  }

  /* Accessibility */
  :focus-visible {
    outline: 2px solid var(--color-action-primary);
    outline-offset: 2px;
  }

  .visually-hidden {
    position: absolute;
    clip: rect(0 0 0 0);
    clip-path: inset(50%);
    overflow: hidden;
    white-space: nowrap;
    inline-size: 1px;
    block-size: 1px;
  }

  /* Skip Link */
  .skip-link {
    position: absolute;
    inset-block-start: var(--p-space-sm);
    inset-inline-start: var(--p-space-sm);
    background: var(--color-action-primary);
    color: var(--color-text-inverse);
    padding: var(--space-component) var(--space-inline);
    border-radius: var(--p-radius-md);
    text-decoration: none;
    transform: translateY(-200%);
    transition: transform 0.2s ease;
  }

  .skip-link:focus {
    transform: translateY(0);
  }

  /* Reduced Motion */
  @media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
      animation-duration: 0.01ms !important;
      animation-iteration-count: 1 !important;
      transition-duration: 0.01ms !important;
      scroll-behavior: auto !important;
    }
  }
}

/* ========================================
   MOLECULES LAYER (Components)
   ======================================== */

@layer molecules {
  /* Layout Primitives */
  .stack {
    display: flex;
    flex-direction: column;
    gap: var(--space-block, var(--p-space-lg));
  }

  .cluster {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-inline, var(--p-space-md));
    align-items: center;
  }

  .grid {
    display: grid;
    gap: var(--space-gutter, var(--p-space-xl));
    grid-template-columns: repeat(auto-fill, minmax(min(250px, 100%), 1fr));
  }

  .center {
    max-inline-size: var(--measure, 70ch);
    margin-inline: auto;
    padding-inline: var(--space-gutter, var(--p-space-xl));
  }

  .switcher {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-gutter, var(--p-space-lg));
  }

  .switcher > * {
    flex-grow: 1;
    flex-basis: calc((var(--switcher-threshold, 30rem) - 100%) * 999);
  }

  /* Card Component */
  .card {
    container-type: inline-size;
    display: flex;
    flex-direction: column;
    gap: var(--space-component);
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border-default);
    border-radius: var(--p-radius-lg);
    padding: var(--space-component);
    transition: box-shadow 0.2s ease;
  }

  .card:hover {
    box-shadow: var(--p-shadow-md);
  }

  @container (inline-size > 400px) {
    .card {
      flex-direction: row;
      padding: var(--space-inline);
    }
  }

  /* Button Variants */
  .button--secondary {
    background: var(--color-action-secondary);
  }

  .button--secondary:hover {
    background: oklch(from var(--color-action-secondary) calc(l + 0.1) c h);
  }

  .button--outline {
    background: transparent;
    border: 2px solid var(--color-action-primary);
    color: var(--color-action-primary);
  }

  .button--outline:hover {
    background: var(--color-action-surface);
  }

  /* Icon Component */
  .icon {
    inline-size: var(--icon-size, 1.5rem);
    block-size: var(--icon-size, 1.5rem);
    fill: currentColor;
    flex-shrink: 0;
  }

  /* Badge */
  .badge {
    display: inline-flex;
    align-items: center;
    gap: var(--p-space-xs);
    background: var(--color-action-surface);
    color: var(--color-action-primary);
    border-radius: var(--p-radius-full);
    padding: var(--p-space-xs) var(--space-component);
    font-size: var(--text-small);
    font-variation-settings: "wght" 500;
  }

  /* Alert Messages */
  .alert {
    container-type: inline-size;
    display: flex;
    gap: var(--space-component);
    padding: var(--space-component);
    border-radius: var(--p-radius-md);
    border-inline-start: 4px solid;
  }

  .alert--success {
    background: var(--color-feedback-success-surface);
    border-color: var(--color-feedback-success);
    color: var(--color-feedback-success);
  }

  .alert--warning {
    background: var(--color-feedback-warning-surface);
    border-color: var(--color-feedback-warning);
    color: var(--color-feedback-warning);
  }

  .alert--error {
    background: var(--color-feedback-error-surface);
    border-color: var(--color-feedback-error);
    color: var(--color-feedback-error);
  }

  .alert--info {
    background: var(--color-feedback-info-surface);
    border-color: var(--color-feedback-info);
    color: var(--color-feedback-info);
  }

  /* Form Group */
  .form-group {
    display: flex;
    flex-direction: column;
    gap: var(--p-space-xs);
    margin-block-end: var(--space-block);
  }

  /* Input Group */
  .input-group {
    display: flex;
    gap: 0;
  }

  .input-group > * {
    border-radius: 0;
  }

  .input-group > *:first-child {
    border-start-start-radius: var(--p-radius-md);
    border-end-start-radius: var(--p-radius-md);
  }

  .input-group > *:last-child {
    border-start-end-radius: var(--p-radius-md);
    border-end-end-radius: var(--p-radius-md);
  }

  .input-group > * + * {
    border-inline-start: none;
  }
}

/* ========================================
   ORGANISMS LAYER
   ======================================== */

@layer organisms {
  /* Site Header */
  .site-header {
    container-type: inline-size;
    background: var(--color-surface-base);
    border-block-end: 1px solid var(--color-border-default);
    padding-block: var(--space-component);
  }

  /* Navigation */
  .site-nav {
    container-type: inline-size;
  }

  .site-nav ul {
    display: flex;
    gap: var(--space-inline);
    list-style: none;
    padding: 0;
  }

  @container (inline-size < 600px) {
    .site-nav ul {
      flex-direction: column;
      gap: var(--p-space-sm);
    }
  }

  /* Card Grid */
  .card-grid {
    container-type: inline-size;
    display: grid;
    gap: var(--space-gutter);
    grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr));
  }

  @container (inline-size > 1200px) {
    .card-grid {
      grid-template-columns: repeat(4, 1fr);
    }
  }

  /* Hero Section */
  .hero {
    container-type: inline-size;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding-block: var(--p-space-3xl);
    padding-inline: var(--space-gutter);
  }

  @container (inline-size > 768px) {
    .hero {
      padding-block: calc(var(--p-space-3xl) * 1.5);
    }
  }

  /* Hero Variants */
  .hero--split {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-gutter);
    text-align: start;
    align-items: center;
  }

  @container (inline-size > 768px) {
    .hero--split {
      grid-template-columns: 1fr 1fr;
    }
  }

  /* Footer */
  .site-footer {
    container-type: inline-size;
    background: var(--color-surface-elevated);
    border-block-start: 1px solid var(--color-border-default);
    padding-block: var(--space-gutter);
  }

  .footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-gutter);
  }

  @container (inline-size > 768px) {
    .footer-grid {
      grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
  }

  /* Navigation - Mobile Menu */
  .nav-toggle {
    display: none;
  }

  @container (inline-size < 600px) {
    .nav-toggle {
      display: block;
    }

    .site-nav ul {
      display: none;
    }

    .site-nav[data-expanded="true"] ul {
      display: flex;
    }
  }

  /* Feature Grid */
  .feature-grid {
    container-type: inline-size;
    display: grid;
    gap: var(--space-gutter);
    grid-template-columns: 1fr;
  }

  @container (inline-size > 600px) {
    .feature-grid {
      grid-template-columns: repeat(2, 1fr);
    }
  }

  @container (inline-size > 1000px) {
    .feature-grid {
      grid-template-columns: repeat(3, 1fr);
    }
  }
}

/* ========================================
   TEMPLATES LAYER
   ======================================== */

@layer templates {
  /* Page Layout */
  .page-layout {
    display: grid;
    min-block-size: 100vh;
    grid-template-rows: auto 1fr auto;
    grid-template-areas:
      "header"
      "main"
      "footer";
  }

  .page-layout > header {
    grid-area: header;
  }

  .page-layout > main {
    grid-area: main;
  }

  .page-layout > footer {
    grid-area: footer;
  }

  /* Sidebar Layout */
  .sidebar-layout {
    container-type: inline-size;
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-gutter);
  }

  .sidebar-layout > :first-child {
    flex-basis: var(--sidebar-width, 20rem);
    flex-grow: 1;
  }

  .sidebar-layout > :last-child {
    flex-basis: 0;
    flex-grow: 999;
    min-inline-size: var(--sidebar-threshold, 50%);
  }
}