/* ==========================================================================
   Invariant Analytics Kernel - Material Theme Customization
   Clean typography, spacing discipline, single accent color
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables - Material Theme Integration
   -------------------------------------------------------------------------- */
:root {
  /* Custom primary/accent colors */
  --md-primary-fg-color: #212529;
  --md-primary-fg-color--light: #495057;
  --md-primary-fg-color--dark: #121416;
  --md-primary-bg-color: #ffffff;
  --md-primary-bg-color--light: #f8f9fa;

  --md-accent-fg-color: #ff3b30;
  --md-accent-fg-color--transparent: rgba(255, 59, 48, 0.1);
  --md-accent-bg-color: #ffffff;
  --md-accent-bg-color--light: #fef5f4;

  /* Invariant semantic colors */
  --inv-success: #38a169;
  --inv-warning: #dd6b20;
  --inv-error: #c53030;
  --inv-info: #3182ce;

  /* Spacing */
  --inv-space-xs: 0.25rem;
  --inv-space-sm: 0.5rem;
  --inv-space-md: 1rem;
  --inv-space-lg: 1.5rem;
  --inv-space-xl: 2rem;
  --inv-space-2xl: 3rem;

  /* Border radius */
  --inv-radius-sm: 4px;
  --inv-radius-md: 6px;
  --inv-radius-lg: 0.5rem;
}

/* Dark mode overrides */
[data-md-color-scheme="slate"] {
  --md-primary-fg-color: #f8f9fa;
  --md-primary-fg-color--light: #adb5bd;
  --md-primary-fg-color--dark: #ffffff;
  --md-primary-bg-color: #1e1e1e;
  --md-primary-bg-color--light: #2d2d2d;

  --md-accent-fg-color: #ff6b61;
  --md-accent-fg-color--transparent: rgba(255, 107, 97, 0.1);
  --md-accent-bg-color: #2d2d2d;
  --md-accent-bg-color--light: #3d2d2d;
}

/* --------------------------------------------------------------------------
   Typography enhancements
   -------------------------------------------------------------------------- */
.md-typeset h1 {
  font-weight: 800;
  letter-spacing: -0.03em;
}

.md-typeset h2 {
  font-weight: 700;
  letter-spacing: -0.02em;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
  padding-bottom: 0.3rem;
}

.md-typeset h3 {
  font-weight: 600;
}

.md-typeset h4 {
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   Code blocks
   -------------------------------------------------------------------------- */
.md-typeset code {
  border-radius: var(--inv-radius-sm);
}

.md-typeset pre {
  border-radius: var(--inv-radius-lg);
}

/* --------------------------------------------------------------------------
   Tables
   -------------------------------------------------------------------------- */
.md-typeset table:not([class]) {
  font-size: 0.9rem;
  border-radius: var(--inv-radius-lg);
  overflow: hidden;
  box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.md-typeset table:not([class]) th {
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}

/* --------------------------------------------------------------------------
   Blockquotes
   -------------------------------------------------------------------------- */
.md-typeset blockquote {
  border-left-color: var(--md-accent-fg-color);
}

/* --------------------------------------------------------------------------
   Invariant Gate Severity Admonitions
   -------------------------------------------------------------------------- */
.md-typeset .admonition.invariant-allow,
.md-typeset details.invariant-allow {
  border-color: var(--inv-success);
}

.md-typeset .invariant-allow > .admonition-title,
.md-typeset .invariant-allow > summary {
  background-color: rgba(56, 161, 105, 0.1);
}

.md-typeset .invariant-allow > .admonition-title::before,
.md-typeset .invariant-allow > summary::before {
  background-color: var(--inv-success);
  -webkit-mask-image: var(--md-admonition-icon--success);
  mask-image: var(--md-admonition-icon--success);
}

.md-typeset .admonition.invariant-warn,
.md-typeset details.invariant-warn {
  border-color: var(--inv-warning);
}

.md-typeset .invariant-warn > .admonition-title,
.md-typeset .invariant-warn > summary {
  background-color: rgba(221, 107, 32, 0.1);
}

.md-typeset .invariant-warn > .admonition-title::before,
.md-typeset .invariant-warn > summary::before {
  background-color: var(--inv-warning);
  -webkit-mask-image: var(--md-admonition-icon--warning);
  mask-image: var(--md-admonition-icon--warning);
}

.md-typeset .admonition.invariant-ack,
.md-typeset details.invariant-ack {
  border-color: var(--inv-info);
}

.md-typeset .invariant-ack > .admonition-title,
.md-typeset .invariant-ack > summary {
  background-color: rgba(49, 130, 206, 0.1);
}

.md-typeset .invariant-ack > .admonition-title::before,
.md-typeset .invariant-ack > summary::before {
  background-color: var(--inv-info);
  -webkit-mask-image: var(--md-admonition-icon--info);
  mask-image: var(--md-admonition-icon--info);
}

.md-typeset .admonition.invariant-block,
.md-typeset details.invariant-block {
  border-color: var(--inv-error);
}

.md-typeset .invariant-block > .admonition-title,
.md-typeset .invariant-block > summary {
  background-color: rgba(197, 48, 48, 0.1);
}

.md-typeset .invariant-block > .admonition-title::before,
.md-typeset .invariant-block > summary::before {
  background-color: var(--inv-error);
  -webkit-mask-image: var(--md-admonition-icon--failure);
  mask-image: var(--md-admonition-icon--failure);
}

/* --------------------------------------------------------------------------
   Custom utility classes
   -------------------------------------------------------------------------- */

/* Micro label */
.micro {
  display: inline-block;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--md-accent-fg-color);
  margin-bottom: 0.6rem;
}

/* Concept highlight */
.concept {
  background: linear-gradient(120deg, var(--md-accent-fg-color--transparent) 0%, var(--md-accent-fg-color--transparent) 100%);
  background-repeat: no-repeat;
  background-size: 100% 0.3em;
  background-position: 0 88%;
  padding: 0 0.1em;
}

/* Status badges */
.badge {
  display: inline-block;
  padding: 0.2em 0.6em;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--inv-radius-sm);
}

.badge--block {
  background: var(--inv-error);
  color: white;
}

.badge--warn {
  background: var(--inv-warning);
  color: white;
}

.badge--allow {
  background: var(--inv-success);
  color: white;
}

/* Utility classes */
.small {
  font-size: 0.9em;
  opacity: 0.85;
}

.muted {
  opacity: 0.75;
}

/* Casefile block */
.casefile {
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: var(--inv-radius-lg);
  padding: 1rem;
  background: var(--md-default-bg-color);
  margin: var(--inv-space-lg) 0;
}

.casefile > :first-child {
  margin-top: 0;
}

.casefile .label {
  font-size: 0.8em;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  opacity: 0.75;
}

/* Reference badge */
.reference-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--md-default-fg-color--lightest);
  border-radius: 999px;
  opacity: 0.8;
  margin-bottom: var(--inv-space-md);
}

/* --------------------------------------------------------------------------
   Navigation - Section vs Page differentiation
   -------------------------------------------------------------------------- */

/* Section headers in sidebar navigation */
.md-nav--primary .md-nav__item--section > .md-nav__link {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--md-default-fg-color--light);
  margin-top: 1rem;
  padding-bottom: 0.25rem;
  border-bottom: 1px solid var(--md-default-fg-color--lightest);
}

/* First section doesn't need top margin */
.md-nav--primary .md-nav__item--section:first-child > .md-nav__link {
  margin-top: 0;
}

/* Page links under sections */
.md-nav--primary .md-nav__item--section .md-nav__item > .md-nav__link {
  font-size: 0.8rem;
  font-weight: 400;
}

/* Active page link */
.md-nav--primary .md-nav__item--section .md-nav__item .md-nav__link--active {
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   Print styles
   -------------------------------------------------------------------------- */
@media print {
  .md-typeset h1,
  .md-typeset h2,
  .md-typeset h3 {
    color: black;
  }

  .md-typeset a {
    color: black;
    text-decoration: underline;
  }
}