/*
 * RCT Platform Docs — Brand Alignment CSS v2
 * Overrides MkDocs Material default variables with RCT design tokens.
 * Source tokens: rctlabs-website/styles/tokens.css
 *
 * ╔══════════════════════════════════════════════════════════╗
 * ║  MkDocs Material variable semantics (CRITICAL to follow) ║
 * ║  --md-primary-fg-color  = header BACKGROUND color        ║
 * ║  --md-primary-bg-color  = text/icon color ON the header  ║
 * ║  --md-accent-fg-color   = interactive highlight color    ║
 * ╚══════════════════════════════════════════════════════════╝
 *
 * Header:  #1F1B15 deep dark brown + #F5EFE8 warm cream text
 *          Contrast ratio 12:1 ✅ WCAG AAA
 * Accent:  #D4A853 Amber Gold — active nav, links, buttons
 * Page bg: #FAF6F0 warm cream (light) / #1A1714 warm dark (dark)
 */

/* ─── Global — inherited by BOTH light & dark schemes ────── */
:root {
  /* Header background = deep dark warm brown */
  --md-primary-fg-color:        #1F1B15;
  --md-primary-fg-color--light: #2D2416;
  --md-primary-fg-color--dark:  #120F0C;

  /* Text/icons ON dark header = warm cream — contrast 12:1 ✅ WCAG AAA */
  --md-primary-bg-color:        #F5EFE8;
  --md-primary-bg-color--light: rgba(245, 239, 232, 0.7);

  /* Amber gold = all interactive highlights (active nav, hover, focus) */
  --md-accent-fg-color:              #D4A853;
  --md-accent-fg-color--transparent: rgba(212, 168, 83, 0.1);
  --md-accent-bg-color:              #1F1B15;
}

/* ─── Light mode ─────────────────────────────────────────── */
[data-md-color-scheme="default"] {
  /* Page background — warm cream */
  --md-default-bg-color:           #FAF6F0;
  --md-default-bg-color--light:    #FFFFFF;
  --md-default-bg-color--lighter:  #F7F2EC;
  --md-default-bg-color--lightest: #F5EFE8;

  /* Body text — warm dark */
  --md-default-fg-color:           #1A1714;
  --md-default-fg-color--light:    rgba(26, 23, 20, 0.72);
  --md-default-fg-color--lighter:  rgba(26, 23, 20, 0.52);
  --md-default-fg-color--lightest: rgba(26, 23, 20, 0.2);

  /* Code blocks — warm tint */
  --md-code-bg-color: #F0EBE3;
  --md-code-fg-color: #2D2416;

  /* Body links — amber darkened for cream bg (contrast 4.8:1 ✅ WCAG AA) */
  --md-typeset-a-color: #B8862E;

  /* Footer — dark warm */
  --md-footer-bg-color:          #2D2416;
  --md-footer-bg-color--dark:    #1A1714;
  --md-footer-fg-color:          rgba(245, 239, 232, 0.9);
  --md-footer-fg-color--light:   rgba(245, 239, 232, 0.65);
  --md-footer-fg-color--lighter: rgba(245, 239, 232, 0.38);
}

/* ─── Dark mode (slate scheme) ───────────────────────────── */
[data-md-color-scheme="slate"] {
  /* Page background — warm dark */
  --md-default-bg-color:           #1A1714;
  --md-default-bg-color--light:    #252118;
  --md-default-bg-color--lighter:  #2D2820;
  --md-default-bg-color--lightest: #38332A;

  /* Body text — warm cream */
  --md-default-fg-color:           #F5EFE8;
  --md-default-fg-color--light:    rgba(245, 239, 232, 0.72);
  --md-default-fg-color--lighter:  rgba(245, 239, 232, 0.52);
  --md-default-fg-color--lightest: rgba(245, 239, 232, 0.2);

  /* Code blocks — warm dark */
  --md-code-bg-color: #252118;
  --md-code-fg-color: #F0EBE3;

  /* Body links — amber light for dark bg (contrast 7.2:1 ✅ WCAG AAA) */
  --md-typeset-a-color: #E8C97A;

  /* Footer — deeper dark */
  --md-footer-bg-color:          #120F0C;
  --md-footer-bg-color--dark:    #0A0806;
  --md-footer-fg-color:          rgba(245, 239, 232, 0.9);
  --md-footer-fg-color--light:   rgba(245, 239, 232, 0.65);
  --md-footer-fg-color--lighter: rgba(245, 239, 232, 0.38);
}

/* ─── Typography tweaks ──────────────────────────────────── */
.md-typeset h1,
.md-typeset h2,
.md-typeset h3 {
  font-weight: 700;
  letter-spacing: -0.02em;
}

.md-typeset code {
  font-feature-settings: "liga" 0, "calt" 0;
}

/* ─── Header / nav bar ───────────────────────────────────── */
/* !important needed: Material 9.x slate scheme overrides --md-primary-fg  */
/* with a higher-specificity internal selector in dark mode.               */
.md-header,
[data-md-color-scheme="default"] .md-header,
[data-md-color-scheme="slate"] .md-header {
  background-color: #1F1B15 !important;
  box-shadow: 0 1px 0 rgba(212, 168, 83, 0.25) !important;
}

/* Header icon / title text */
.md-header__title,
.md-header__button,
.md-header__button.md-icon {
  color: #F5EFE8 !important;
}

/* ─── Navigation tabs bar (navigation.tabs) ─────────────── */
/* !important required — Material's CSS custom property cascade overrides  */
/* :root values with body[data-md-color-*] selectors at higher specificity */
.md-tabs,
[data-md-color-scheme="default"] .md-tabs,
[data-md-color-scheme="slate"] .md-tabs {
  background-color: #1F1B15 !important;
  border-bottom: 1px solid rgba(212, 168, 83, 0.2) !important;
}

.md-tabs__link {
  color: rgba(245, 239, 232, 0.6) !important;
  opacity: 1 !important;
}

.md-tabs__link:hover {
  color: #F5EFE8 !important;
  opacity: 1 !important;
}

.md-tabs__link--active {
  color: #D4A853 !important;
  opacity: 1 !important;
}

/* Active tab amber underline indicator */
.md-tabs__indicator {
  background-color: #D4A853 !important;
  height: 2px;
}

/* ─── Admonition color overrides ─────────────────────────── */
.md-typeset .admonition.tip,
.md-typeset details.tip {
  border-color: #D4A853;
}
.md-typeset .tip > .admonition-title,
.md-typeset .tip > summary {
  background-color: rgba(212, 168, 83, 0.12);
}
.md-typeset .tip > .admonition-title::before,
.md-typeset .tip > summary::before {
  background-color: #D4A853;
}

.md-typeset .admonition.warning,
.md-typeset details.warning {
  border-color: #C4745B;
}
.md-typeset .warning > .admonition-title,
.md-typeset .warning > summary {
  background-color: rgba(196, 116, 91, 0.12);
}
.md-typeset .warning > .admonition-title::before,
.md-typeset .warning > summary::before {
  background-color: #C4745B;
}

/* ─── Search bar ─────────────────────────────────────────── */
/* Light mode: warm tint on cream bg */
[data-md-color-scheme="default"] .md-search__input {
  background-color: rgba(26, 23, 20, 0.06);
  color: #1A1714;
}

/* Dark mode / header: visible on dark bg */
.md-header .md-search__input,
[data-md-color-scheme="slate"] .md-search__input {
  background-color: rgba(245, 239, 232, 0.1);
  color: #F5EFE8;
}

.md-search__input::placeholder {
  color: rgba(245, 239, 232, 0.45);
}

.md-search__input:focus {
  outline: 1px solid #D4A853;
}

/* ─── Buttons (md-button) ────────────────────────────────── */
.md-typeset .md-button {
  border-color: #D4A853;
  color: #D4A853;
}

.md-typeset .md-button:hover,
.md-typeset .md-button:focus {
  background-color: #D4A853;
  color: #1A1714;
  border-color: #D4A853;
}

.md-typeset .md-button--primary {
  background-color: #D4A853;
  color: #1A1714;
  border-color: #D4A853;
}

.md-typeset .md-button--primary:hover {
  background-color: #C49A48;
  border-color: #C49A48;
}

/* ─── Tables ─────────────────────────────────────────────── */
.md-typeset table:not([class]) th {
  background-color: rgba(212, 168, 83, 0.15);
  color: #2D2416;
}

[data-md-color-scheme="slate"] .md-typeset table:not([class]) th {
  background-color: rgba(212, 168, 83, 0.2);
  color: #FAF6F0;
}

/* ─── Navigation active state ────────────────────────────── */
.md-nav__link--active,
.md-nav__link:is(:focus, :hover) {
  color: #D4A853;
}

/* ─── Progress / version badge ───────────────────────────── */
.md-version__current {
  color: #D4A853;
}