/*
 * IAdea Child Theme — Brand Design Tokens & Component Styles
 *
 * Source of truth: 01-Brand-Assets/Guidelines/BRAND_GUIDELINES.md (v1.0, April 2026)
 *
 * All Divi module overrides, layout rules, and component styles reference
 * these custom properties. Never hard-code a colour or font size.
 *
 * Index
 * ─────────────────────────────────────────────────────────
 * 1.  Design tokens
 * 2.  Base resets & globals
 * 3.  Typography helpers
 * 4.  Layout helpers
 * 5.  Divi module overrides
 * 6.  Header component
 * 7.  Footer component
 * 8.  Responsive — Tablet (≤ 1024px)
 * 9.  Responsive — Mobile (≤ 767px)
 * 10. Mobile nav drawer
 * 11. Reduced motion
 * ─────────────────────────────────────────────────────────
 */


/* ==========================================================================
 * 1. DESIGN TOKENS
 * ========================================================================== */

:root {

    /* ── Colour: Core (5) ──────────────────────────────────────────────── */
    --color-ink:          #1B2020;  /* Primary text, headlines             */
    --color-cream:        #FBFAF7;  /* Default surface                     */
    --color-warm-cream:   #F2E8DE;  /* Secondary surface                   */
    --color-forest:       #053333;  /* Hardware moments, dark sections     */
    --color-terracotta:   #C36A3F;  /* Warm accent — italic lines, pills   */

    /* ── Colour: Green family (from logo mark) ──────────────────────────── */
    --color-green:        #00CD8C;  /* Primary interactive — buttons, hover */
    --color-green-deep:   #009668;  /* Pressed / active states             */
    --color-mint:         #7DF9C3;  /* On-dark surfaces, glows             */

    /* ── Colour: Supporting tones ──────────────────────────────────────── */
    --color-ink-78:  rgba(27, 32, 32, 0.78);  /* Body text on cream       */
    --color-ink-45:  rgba(27, 32, 32, 0.45);  /* Captions, metadata       */
    --color-ink-18:  rgba(27, 32, 32, 0.18);  /* Hairline dividers        */

    /* ── Colour: On-dark (Forest / Ink surfaces) ────────────────────────  */
    --color-cream-on-dark:    rgba(251, 250, 247, 0.90);
    --color-cream-45-on-dark: rgba(251, 250, 247, 0.45);
    --color-cream-18-on-dark: rgba(251, 250, 247, 0.18);

    /* ── Typography: Families ──────────────────────────────────────────── */
    --font-display:  'Nunito Sans', system-ui, -apple-system, sans-serif;
    --font-mono:     'Space Mono', 'Courier New', monospace;

    /* ── Typography: Scale ─────────────────────────────────────────────── */
    --text-display-xl:  72px;
    --text-display-l:   56px;
    --text-headline:    44px;
    --text-subhead:     32px;
    --text-lede:        20px;
    --text-body:        16px;
    --text-small:       14px;
    --text-eyebrow:     13px;
    --text-meta:        12px;
    --text-caption:     11px;

    /* ── Typography: Line heights ───────────────────────────────────────── */
    --leading-display-xl: 76px;
    --leading-display-l:  68px;
    --leading-headline:   50px;
    --leading-subhead:    38px;
    --leading-lede:       30px;
    --leading-body:       26px;
    --leading-small:      22px;
    --leading-eyebrow:    15px;
    --leading-meta:       15px;
    --leading-caption:    13px;

    /* ── Typography: Tracking ───────────────────────────────────────────── */
    --tracking-display-xl: -0.025em;
    --tracking-display-l:  -0.022em;
    --tracking-headline:    0.02em;
    --tracking-subhead:    -0.015em;
    --tracking-eyebrow:     0.18em;
    --tracking-meta:        0.14em;
    --tracking-caption:     0.16em;

    /* ── Typography: Weights ────────────────────────────────────────────── */
    --weight-light:    300;
    --weight-regular:  400;
    --weight-semibold: 600;
    --weight-bold:     700;

    /* ── Spacing (8px base) ─────────────────────────────────────────────── */
    --space-1:   8px;
    --space-2:   16px;
    --space-3:   24px;
    --space-6:   48px;
    --space-8:   64px;
    --space-section: 70px;

    /* ── Layout ─────────────────────────────────────────────────────────── */
    --grid-max:    1248px;
    --grid-margin:   96px;
    --artboard-max: 1440px;

    /* ── Borders ────────────────────────────────────────────────────────── */
    --border-width:  1px;
    --border-radius: 4px;
    --border-hairline: 1px solid var(--color-ink-18);

    /* ── Header ─────────────────────────────────────────────────────────── */
    --header-height: 64px;

    /* ── Motion ─────────────────────────────────────────────────────────── */
    --ease-out:      cubic-bezier(0.16, 1, 0.3, 1);
    --ease-in-out:   cubic-bezier(0.45, 0, 0.55, 1);
    --duration-fast: 160ms;
    --duration-base: 280ms;
    --duration-slow: 460ms;

    /* ── Z-index scale ──────────────────────────────────────────────────── */
    --z-header:  100;
    --z-overlay: 200;
    --z-modal:   300;
}


/* ==========================================================================
 * 2. BASE RESETS & GLOBALS
 * ========================================================================== */

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

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    background-color: var(--color-cream);
    color: var(--color-ink);
    font-family: var(--font-display);
    font-size: var(--text-body);
    line-height: var(--leading-body);
    font-weight: var(--weight-regular);
    margin: 0;
    padding-top: var(--header-height);
}

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

a {
    color: inherit;
    text-decoration: none;
}

a:hover {
    opacity: 0.7;
    transition: opacity var(--duration-fast) var(--ease-out);
}


/* ==========================================================================
 * 3. TYPOGRAPHY HELPERS
 * ========================================================================== */

.ia-display-xl {
    font-family: var(--font-display);
    font-size: var(--text-display-xl);
    line-height: var(--leading-display-xl);
    font-weight: var(--weight-light);
    letter-spacing: var(--tracking-display-xl);
}

.ia-display-l {
    font-family: var(--font-display);
    font-size: var(--text-display-l);
    line-height: var(--leading-display-l);
    font-weight: var(--weight-light);
    letter-spacing: var(--tracking-display-l);
}

.ia-headline {
    font-family: var(--font-display);
    font-size: var(--text-headline);
    line-height: var(--leading-headline);
    font-weight: var(--weight-light);
    letter-spacing: var(--tracking-headline);
}

.ia-subhead {
    font-family: var(--font-display);
    font-size: var(--text-subhead);
    line-height: var(--leading-subhead);
    font-weight: var(--weight-light);
    letter-spacing: var(--tracking-subhead);
}

.ia-lede {
    font-family: var(--font-display);
    font-size: var(--text-lede);
    line-height: var(--leading-lede);
    font-weight: var(--weight-light);
}

.ia-body {
    font-family: var(--font-display);
    font-size: var(--text-body);
    line-height: var(--leading-body);
    font-weight: var(--weight-regular);
}

.ia-eyebrow {
    font-family: var(--font-mono);
    font-size: var(--text-eyebrow);
    line-height: var(--leading-eyebrow);
    font-weight: var(--weight-regular);
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
}

.ia-meta {
    font-family: var(--font-mono);
    font-size: var(--text-meta);
    line-height: var(--leading-meta);
    font-weight: var(--weight-regular);
    letter-spacing: var(--tracking-meta);
}

.ia-caption {
    font-family: var(--font-mono);
    font-size: var(--text-caption);
    line-height: var(--leading-caption);
    font-weight: var(--weight-regular);
    letter-spacing: var(--tracking-caption);
    text-transform: uppercase;
}


/* ==========================================================================
 * 4. LAYOUT HELPERS
 * ========================================================================== */

.ia-container {
    width: 100%;
    max-width: var(--grid-max);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--grid-margin);
    padding-right: var(--grid-margin);
}

.ia-section {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
}


/* ==========================================================================
 * 5. DIVI MODULE OVERRIDES
 * ========================================================================== */

/* Divi's JS injects padding-top on #page-container for its own fixed header
 * (triggered by the et_fixed_nav body class). Since we've replaced the header
 * with header.php and handle the offset via body { padding-top }, we zero
 * this out so the two values don't stack. */
#page-container {
    padding-top: 0 !important;
}

/* Row max-width — match brand content grid */
#page-container .et_pb_row {
    max-width: var(--grid-max);
}

/* Section vertical padding — match brand section rhythm */
#page-container .et_pb_section {
    padding-top: var(--space-section);
    padding-bottom: var(--space-section);
}

/* Body font */
body #page-container {
    font-family: var(--font-display);
    font-weight: var(--weight-regular);
    color: var(--color-ink);
}

/* Heading stack */
body #page-container h1,
body #page-container h2,
body #page-container h3,
body #page-container h4,
body #page-container h5 {
    font-family: var(--font-display);
    font-weight: var(--weight-light);
    color: var(--color-ink);
}


/* Focus ring */
body #page-container a:focus {
    outline: 2px solid var(--color-green);
    outline-offset: 3px;
}

/* Remove Divi's default blue link color */
.et_pb_module a {
    color: inherit;
}


/* ==========================================================================
 * 6. HEADER COMPONENT
 * ========================================================================== */

.iadea-header__skip {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

.iadea-header__skip:focus {
    position: fixed;
    top: 0;
    left: 0;
    width: auto;
    height: auto;
    overflow: visible;
    z-index: calc(var(--z-header) + 10);
    padding: 8px 16px;
    background: var(--color-forest);
    color: var(--color-cream);
    font-family: var(--font-mono);
    font-size: var(--text-eyebrow);
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
}

/* Header shell */
.iadea-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-header);
    background-color: var(--color-cream);
    border-bottom: var(--border-hairline);
    height: var(--header-height);
}

/* Inner bar — 3-column layout: logo | nav | actions */
.iadea-header__bar {
    height: 100%;
    max-width: var(--artboard-max);
    margin: 0 auto;
    padding: 0 var(--grid-margin);
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: var(--space-3);
}

/* ─── Logo ─── */
.iadea-header__logo {
    display: flex;
    align-items: center;
    color: var(--color-ink);
    flex-shrink: 0;
}

.iadea-header__logo svg {
    width: auto;
    height: 50px;
    display: block;
}

.iadea-header__logo:hover {
    opacity: 1;
}

/* ─── Primary nav ─── */
.iadea-header__nav {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Reset WordPress nav menu list */
.iadea-header__menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: 0;
}

/* Top-level items */
.iadea-header__menu > li {
    position: relative;
}

.iadea-header__menu > li > a {
    display: flex;
    align-items: center;
    gap: 4px;
    height: var(--header-height);
    padding: 0 16px;
    font-family: var(--font-display);
    font-size: var(--text-small);
    font-weight: var(--weight-regular);
    color: var(--color-ink);
    white-space: nowrap;
    transition: color var(--duration-fast) var(--ease-out);
}

.iadea-header__menu > li > a:hover,
.iadea-header__menu > .current-menu-item > a,
.iadea-header__menu > .current-menu-ancestor > a {
    opacity: 1;
    color: var(--color-green-deep);
}

/* ─── Desktop chevron on items with sub-menus ─── */
.iadea-header__menu > li.menu-item-has-children > a::after {
    content: '';
    width: 6px;
    height: 6px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(45deg);
    margin-top: -2px;
    opacity: 0.4;
    flex-shrink: 0;
    transition: transform var(--duration-fast) var(--ease-out),
                opacity var(--duration-fast) var(--ease-out);
}

.iadea-header__menu > li.menu-item-has-children:hover > a::after {
    transform: rotate(-135deg);
    opacity: 0.7;
}

/* ─── URL indicator: arrow on top-level items that navigate ───
 * Items WITHOUT data-no-link have real URLs.
 * Items WITHOUT menu-item-has-children have no dropdown chevron.
 * Show a → arrow to signal "clicking goes to a page".
 * ─────────────────────────────────────────────────────────────── */
.iadea-header__menu > li:not([data-no-link]):not(.menu-item-has-children) > a::after {
    content: '';
    width: 6px;
    height: 6px;
    border-right: 1.5px solid currentColor;
    border-bottom: 1.5px solid currentColor;
    transform: rotate(-45deg);
    opacity: 0.35;
    flex-shrink: 0;
    transition: opacity var(--duration-fast) var(--ease-out),
                transform var(--duration-fast) var(--ease-out);
}

.iadea-header__menu > li:not([data-no-link]):not(.menu-item-has-children) > a:hover::after {
    opacity: 0.7;
    transform: rotate(-45deg) translateX(2px);
}

/* Chevron toggle button (injected by JS for mobile) */
.iadea-header__toggle {
    display: none; /* desktop: JS toggle hidden, CSS ::after handles it */
    background: none;
    border: none;
    padding: 0 4px;
    cursor: pointer;
    color: inherit;
    line-height: 1;
}

/* ─── Sub-menus ─── */
.iadea-header__menu .sub-menu {
    list-style: none;
    margin: 0;
    padding: var(--space-2) 0;
    position: absolute;
    top: calc(var(--header-height) - 1px);
    left: 0;
    min-width: 220px;
    background-color: var(--color-cream);
    border: var(--border-hairline);
    border-top: 2px solid var(--color-green);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-4px);
    transition:
        opacity var(--duration-base) var(--ease-out),
        transform var(--duration-base) var(--ease-out),
        visibility var(--duration-base);
    z-index: var(--z-overlay);
}

.iadea-header__menu li:hover > .sub-menu,
.iadea-header__menu li:focus-within > .sub-menu,
.iadea-header__menu li.is-mega-open > .sub-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
}

.iadea-header__menu .sub-menu li a {
    display: block;
    padding: 8px 20px;
    font-family: var(--font-display);
    font-size: var(--text-small);
    font-weight: var(--weight-regular);
    color: var(--color-ink-78);
    white-space: nowrap;
    transition: color var(--duration-fast) var(--ease-out),
                background-color var(--duration-fast) var(--ease-out);
}

.iadea-header__menu .sub-menu li a:hover {
    opacity: 1;
    color: var(--color-green-deep);
    background-color: var(--color-warm-cream);
}

/* Nested sub-menus (standard dropdowns only — mega overrides below) */
.iadea-header__menu .sub-menu .sub-menu {
    top: -8px;
    left: 100%;
    border-top: var(--border-hairline);
}

/* ── Level 4 flyout (standard dropdowns) ─────────────────────────────── */
.iadea-header__menu .sub-menu .sub-menu .sub-menu {
    top: -8px;
    left: 100%;
    border-top: var(--border-hairline);
    border-left: 2px solid var(--color-ink-18);
    background-color: var(--color-cream);
    min-width: 200px;
}

.iadea-header__menu .sub-menu .sub-menu .sub-menu li a {
    font-size: var(--text-small);
    color: var(--color-ink-45);
    padding: 6px 20px;
}

.iadea-header__menu .sub-menu .sub-menu .sub-menu li a:hover {
    color: var(--color-green-deep);
    background-color: var(--color-warm-cream);
}

/* ── Level 5 flyout (standard dropdowns) ─────────────────────────────── */
.iadea-header__menu .sub-menu .sub-menu .sub-menu .sub-menu {
    top: -8px;
    left: 100%;
    border-top: var(--border-hairline);
    border-left: 2px solid var(--color-ink-18);
    background-color: rgba(242, 232, 222, 0.3);
    min-width: 190px;
}

.iadea-header__menu .sub-menu .sub-menu .sub-menu .sub-menu li a {
    font-size: var(--text-meta);
    color: var(--color-ink-45);
    padding: 5px 18px;
}

.iadea-header__menu .sub-menu .sub-menu .sub-menu .sub-menu li a:hover {
    color: var(--color-green-deep);
    background-color: var(--color-warm-cream);
}

/* Flyout direction flip — added by JS when dropdown overflows viewport */
.iadea-header__menu .sub-menu.flyout-left {
    left: auto;
    right: 100%;
}

/* ── Mega-menu panels ────────────────────────────────────────────────────
 *
 * Three class variants — assign ONE to a top-level menu <li> in
 * WP Admin → Appearance → Menus → CSS Classes field.
 *
 *   mega-menu      Auto-width flex columns with Space Mono eyebrow headers.
 *                  Best for 2–3 grouped columns (Solutions, Technology).
 *
 *   mega-menu-4col 4 equal CSS-grid columns, eyebrow headers.
 *                  Best for Products, Partners (4-category layouts).
 *
 *   mega-menu-5col 5 equal CSS-grid columns, card-title style (no eyebrow).
 *                  Best for Industries / flat-list columns.
 *
 * Optional child modifier — add to a direct child <li> inside any variant:
 *   featured       Forest-bg card column (matches the Paper "Featured" panel).
 *
 * On mobile (≤ 1024px) all three variants revert to standard accordion.
 * ─────────────────────────────────────────────────────────────────────── */

/* ── SHARED: position: static so the panel anchors to .iadea-header ───── */
.iadea-header__menu > li.mega-menu,
.iadea-header__menu > li.mega-menu-4col,
.iadea-header__menu > li.mega-menu-5col {
    position: static;
}

/* ── SHARED: full-width panel chrome ──────────────────────────────────── */
.iadea-header__menu > li.mega-menu > .sub-menu,
.iadea-header__menu > li.mega-menu-4col > .sub-menu,
.iadea-header__menu > li.mega-menu-5col > .sub-menu {
    top: var(--header-height);
    left: 0;
    right: 0;
    width: 100%;
    min-width: 0;
    padding: var(--space-6) var(--grid-margin);
    border-top: 2px solid var(--color-green);
    border-left: none;
    border-right: none;
    border-bottom: var(--border-hairline);
    box-shadow: 0 8px 24px rgba(27, 32, 32, 0.06);
    display: block; /* prevent CMS/Divi from hiding the panel with display:none */
}

/* ── SHARED: column padding + vertical divider ─────────────────────────── */
.iadea-header__menu > li.mega-menu > .sub-menu > li,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li {
    padding: 0 var(--space-3);
    border-right: var(--border-hairline);
}

.iadea-header__menu > li.mega-menu > .sub-menu > li:first-child,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li:first-child,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li:first-child {
    padding-left: 0;
}

.iadea-header__menu > li.mega-menu > .sub-menu > li:last-child,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li:last-child,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li:last-child {
    border-right: none;
    padding-right: 0;
}

/* ── SHARED: inline sub-sub-menu (column content, not a dropdown) ──────── */
.iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    min-width: 0;
    width: 100%;
    background: transparent;
    border: none;
    padding: 0;
    z-index: auto;
    transition: none;
    box-shadow: none;
    max-height: none;
    overflow: visible;
}

.iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu li,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu li,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu li {
    width: 100%;
}

/* ── SHARED: links within column content ──────────────────────────────── */
.iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu li a,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu li a,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu li a {
    display: block;
    padding: 6px 0;
    font-family: var(--font-display);
    font-size: var(--text-body);
    font-weight: var(--weight-regular);
    color: var(--color-ink-78);
    white-space: normal;
    opacity: 1;
    background-color: transparent;
    transition: color var(--duration-fast) var(--ease-out);
}

.iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu li a:hover,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu li a:hover,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu li a:hover {
    color: var(--color-green-deep);
    opacity: 1;
    background-color: transparent;
}

/* ── MEGA COLUMNS: Level 4 — sub-group within column ───────────────────
 * Renders inline (not as flyout). Acts as a labelled sub-section
 * within a column. Items with children get a hairline separator.
 * ───────────────────────────────────────────────────────────────────── */

/* Ensure L4 sub-menus render inline within mega columns */
.iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu .sub-menu,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu .sub-menu,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu .sub-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    min-width: 0;
    width: 100%;
    background: transparent;
    border: none;
    padding: 0;
    z-index: auto;
    transition: none;
    box-shadow: none;
    max-height: none;
    overflow: visible;
}

/* L4 parent items with children — hairline separator to mark sub-group */
.iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu > li.menu-item-has-children,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu > li.menu-item-has-children,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu > li.menu-item-has-children {
    margin-top: var(--space-1);
    padding-top: var(--space-1);
    border-top: var(--border-hairline);
}

/* L4 link as sub-group heading */
.iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu > li.menu-item-has-children > a,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu > li.menu-item-has-children > a,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu > li.menu-item-has-children > a {
    font-family: var(--font-display);
    font-size: var(--text-body);
    font-weight: var(--weight-semibold);
    color: var(--color-ink-78);
    padding: 4px 0;
    letter-spacing: 0;
}

/* L5 links — leaf items, indented and smallest */
.iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu .sub-menu li a,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu .sub-menu li a,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu .sub-menu li a {
    font-family: var(--font-display);
    font-size: var(--text-body);
    font-weight: var(--weight-regular);
    color: var(--color-ink-78);
    padding: 3px 0 3px 12px;
    white-space: normal;
}

.iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu .sub-menu li a:hover,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu .sub-menu li a:hover,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu .sub-menu li a:hover {
    color: var(--color-green-deep);
}

/* ── MEGA COLUMNS: Level 5 — deepest nesting within column ─────────── */

.iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu .sub-menu .sub-menu,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu .sub-menu .sub-menu,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu .sub-menu .sub-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    min-width: 0;
    width: 100%;
    background: transparent;
    border: none;
    padding: 0;
    z-index: auto;
    transition: none;
    box-shadow: none;
    max-height: none;
    overflow: visible;
}

.iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu .sub-menu .sub-menu li a,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu .sub-menu .sub-menu li a,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu .sub-menu .sub-menu li a {
    font-size: var(--text-body);
    color: var(--color-ink-78);
    padding: 2px 0 2px 20px;
}

/* ─────────────────────────────────────────────────────────────────────────
 * VARIANT: mega-menu
 * Auto-width flex columns. Space Mono eyebrow column headers.
 * Use for Solutions, Technology — 2 to 3 grouped columns.
 * ───────────────────────────────────────────────────────────────────────── */

.iadea-header__menu > li.mega-menu > .sub-menu {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    flex-wrap: nowrap;
    gap: 0;
}

.iadea-header__menu > li.mega-menu > .sub-menu > li {
    flex: 1;
    min-width: 140px;
}

/* ─────────────────────────────────────────────────────────────────────────
 * VARIANT: mega-menu-4col
 * Exactly 4 equal CSS-grid columns. Space Mono eyebrow column headers.
 * Use for Products, Partners.
 * ───────────────────────────────────────────────────────────────────────── */

.iadea-header__menu > li.mega-menu-4col > .sub-menu {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}

/* ─────────────────────────────────────────────────────────────────────────
 * VARIANT: mega-menu-5col
 * Exactly 5 equal CSS-grid columns. Card-title style (no eyebrow).
 * Use for Industries / flat equal-weight columns.
 * ───────────────────────────────────────────────────────────────────────── */

.iadea-header__menu > li.mega-menu-5col > .sub-menu {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0;
}

/* ── SHARED EYEBROW HEADER (mega-menu + mega-menu-4col) ───────────────────
 * Space Mono uppercase label with hairline underline.
 * Only applies to column headers that HAVE children (category groupings).
 * mega-menu-5col uses the card-title style below instead.
 * ───────────────────────────────────────────────────────────────────────── */

.iadea-header__menu > li.mega-menu > .sub-menu > li.menu-item-has-children > a,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li.menu-item-has-children > a {
    display: block;
    padding: 0 0 var(--space-2) 0;
    margin-bottom: var(--space-2);
    border-bottom: var(--border-hairline);
    font-family: var(--font-mono);
    font-size: var(--text-small);
    font-weight: var(--weight-bold);
    letter-spacing: var(--tracking-caption);
    text-transform: uppercase;
    color: var(--color-green-deep);
    white-space: normal;
    background-color: transparent;
    opacity: 1;
    transition: color var(--duration-fast) var(--ease-out);
}

.iadea-header__menu > li.mega-menu > .sub-menu > li.menu-item-has-children > a:hover,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li.menu-item-has-children > a:hover {
    color: var(--color-forest);
    opacity: 1;
    background-color: transparent;
}

/* ── LEAF ITEMS (no children) — normal link style ─────────────────────────
 * Items without sub-menus should look like regular nav links,
 * not category headers.
 * ───────────────────────────────────────────────────────────────────────── */

.iadea-header__menu > li.mega-menu > .sub-menu > li:not(.menu-item-has-children) > a,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li:not(.menu-item-has-children) > a {
    display: block;
    padding: 6px 0;
    font-family: var(--font-display);
    font-size: var(--text-body);
    font-weight: var(--weight-regular);
    color: var(--color-ink-78);
    white-space: normal;
    background-color: transparent;
    opacity: 1;
    transition: color var(--duration-fast) var(--ease-out);
}

.iadea-header__menu > li.mega-menu > .sub-menu > li:not(.menu-item-has-children) > a:hover,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li:not(.menu-item-has-children) > a:hover {
    color: var(--color-green-deep);
    opacity: 1;
    background-color: transparent;
}

/* ── CARD-TITLE HEADER (mega-menu-5col only) ──────────────────────────────
 * Nunito Sans semibold — section title, not eyebrow.
 * ───────────────────────────────────────────────────────────────────────── */

.iadea-header__menu > li.mega-menu-5col > .sub-menu > li > a {
    display: block;
    padding: 0 0 var(--space-1) 0;
    margin-bottom: var(--space-1);
    border-bottom: none;
    font-family: var(--font-display);
    font-size: var(--text-body);
    font-weight: var(--weight-semibold);
    letter-spacing: -0.01em;
    text-transform: none;
    color: var(--color-ink);
    white-space: normal;
    background-color: transparent;
    opacity: 1;
    transition: color var(--duration-fast) var(--ease-out);
}

.iadea-header__menu > li.mega-menu-5col > .sub-menu > li > a:hover {
    color: var(--color-green-deep);
    opacity: 1;
    background-color: transparent;
}

/* ─────────────────────────────────────────────────────────────────────────
 * FEATURED COLUMN MODIFIER
 * Add "featured" CSS class to a direct child <li> in WP Admin.
 * Produces the Forest-bg card column matching the Paper "Featured" panel.
 * Works with all three variants.
 * ───────────────────────────────────────────────────────────────────────── */

.iadea-header__menu > li.mega-menu > .sub-menu > li.featured,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li.featured,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li.featured {
    background-color: var(--color-forest);
    border-radius: var(--border-radius);
    border-right: none;
    padding: var(--space-3);
}

/* Give featured column a little breathing room from siblings */
.iadea-header__menu > li.mega-menu > .sub-menu > li.featured {
    flex: 0 0 260px;
    margin-left: var(--space-3);
}

/* Eyebrow / header on featured Forest bg */
.iadea-header__menu > li.mega-menu > .sub-menu > li.featured > a,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li.featured > a {
    color: rgba(156, 185, 156, 0.9); /* sage */
    border-bottom-color: var(--color-cream-18-on-dark);
}

.iadea-header__menu > li.mega-menu-5col > .sub-menu > li.featured > a {
    color: var(--color-cream-on-dark);
}

.iadea-header__menu > li.mega-menu > .sub-menu > li.featured > a:hover,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li.featured > a:hover,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li.featured > a:hover {
    color: var(--color-mint);
    opacity: 1;
}

/* Column content links on Forest bg */
.iadea-header__menu > li.mega-menu > .sub-menu > li.featured > .sub-menu li a,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li.featured > .sub-menu li a,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li.featured > .sub-menu li a {
    color: var(--color-cream-on-dark);
}

.iadea-header__menu > li.mega-menu > .sub-menu > li.featured > .sub-menu li a:hover,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li.featured > .sub-menu li a:hover,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li.featured > .sub-menu li a:hover {
    color: var(--color-mint);
    opacity: 1;
}

/* ── Featured column: L4 sub-group heading on dark bg ──────────────── */
.iadea-header__menu > li.mega-menu > .sub-menu > li.featured > .sub-menu > li.menu-item-has-children,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li.featured > .sub-menu > li.menu-item-has-children,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li.featured > .sub-menu > li.menu-item-has-children {
    border-top-color: var(--color-cream-18-on-dark);
}

.iadea-header__menu > li.mega-menu > .sub-menu > li.featured > .sub-menu > li.menu-item-has-children > a,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li.featured > .sub-menu > li.menu-item-has-children > a,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li.featured > .sub-menu > li.menu-item-has-children > a {
    color: var(--color-cream-on-dark);
}

/* ── Featured column: L5 leaf items on dark bg ─────────────────────── */
.iadea-header__menu > li.mega-menu > .sub-menu > li.featured > .sub-menu .sub-menu li a,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li.featured > .sub-menu .sub-menu li a,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li.featured > .sub-menu .sub-menu li a {
    color: var(--color-cream-45-on-dark);
}

.iadea-header__menu > li.mega-menu > .sub-menu > li.featured > .sub-menu .sub-menu li a:hover,
.iadea-header__menu > li.mega-menu-4col > .sub-menu > li.featured > .sub-menu .sub-menu li a:hover,
.iadea-header__menu > li.mega-menu-5col > .sub-menu > li.featured > .sub-menu .sub-menu li a:hover {
    color: var(--color-mint);
}

/* ── MEGA-MENU SHOW RULES — explicit display per variant ─────────────────
 * Variant-specific selectors have higher specificity (0,4,1) than any
 * generic .sub-menu rule Divi/CMS might use to hide the panel.
 * Setting display here ensures the panel is shown with the correct layout.
 * ───────────────────────────────────────────────────────────────────────── */

.iadea-header__menu > li.mega-menu:hover > .sub-menu,
.iadea-header__menu > li.mega-menu:focus-within > .sub-menu,
.iadea-header__menu > li.mega-menu.is-mega-open > .sub-menu {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.iadea-header__menu > li.mega-menu-4col:hover > .sub-menu,
.iadea-header__menu > li.mega-menu-4col:focus-within > .sub-menu,
.iadea-header__menu > li.mega-menu-4col.is-mega-open > .sub-menu {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.iadea-header__menu > li.mega-menu-5col:hover > .sub-menu,
.iadea-header__menu > li.mega-menu-5col:focus-within > .sub-menu,
.iadea-header__menu > li.mega-menu-5col.is-mega-open > .sub-menu {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

/* ─── Actions (right side) ─── */
.iadea-header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
}

/* Desktop CTA button */
.iadea-header__cta {
    display: inline-flex;
    align-items: center;
    height: 36px;
    padding: 0 18px;
    background-color: var(--color-forest);
    color: var(--color-cream);
    font-family: var(--font-mono);
    font-size: var(--text-eyebrow);
    font-weight: var(--weight-regular);
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    border-radius: var(--border-radius);
    white-space: nowrap;
    transition:
        background-color var(--duration-base) var(--ease-out),
        color var(--duration-base) var(--ease-out);
}

.iadea-header__cta:hover {
    opacity: 1;
    background-color: var(--color-green-deep);
    color: var(--color-cream);
}

/* Hamburger — hidden on desktop */
.iadea-header__hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 36px;
    height: 36px;
    padding: 0;
    background: none;
    border: none;
    cursor: pointer;
}

.iadea-header__hamburger-line {
    display: block;
    width: 24px;
    height: 1.5px;
    background-color: var(--color-ink);
    transition:
        transform var(--duration-base) var(--ease-out),
        opacity var(--duration-base) var(--ease-out);
}

/* Hamburger → X when open */
.iadea-header.is-open .iadea-header__hamburger-line:first-child {
    transform: translateY(3.75px) rotate(45deg);
}
.iadea-header.is-open .iadea-header__hamburger-line:last-child {
    transform: translateY(-3.75px) rotate(-45deg);
}

/* Drawer CTA (mobile only — hidden on desktop) */
.iadea-header__drawer-cta {
    display: none;
}


/* ==========================================================================
 * 7. FOOTER COMPONENT
 * ========================================================================== */

.iadea-footer {
    background-color: var(--color-ink);   /* Ink #1B2020 — matches homepage design */
    color: var(--color-cream-on-dark);
    padding-top: var(--space-8);
    padding-bottom: 0;
}

/* 2-column grid: brand (wider) + nav area */
.iadea-footer__grid {
    max-width: var(--artboard-max);
    margin: 0 auto;
    padding: 0 var(--grid-margin) var(--space-8);
    display: grid;
    grid-template-columns: 1.6fr 4fr;
    gap: var(--space-3);
    border-bottom: 1px solid var(--color-cream-18-on-dark);
}

/* Brand column */
.iadea-footer__logo-link {
    display: inline-flex;
    margin-bottom: var(--space-3);
}

.iadea-footer__logo {
    width: 84px;
    height: auto;
    /* SVG is Ink-fill — invert for dark bg */
    filter: brightness(0) invert(1);
}

.iadea-footer__tagline {
    font-family: var(--font-display);
    font-size: var(--text-small);
    line-height: var(--leading-small);
    font-weight: var(--weight-light);
    color: var(--color-cream-on-dark);
    max-width: 240px;
    margin: 0;
}

/* Footer nav wrapper */
.iadea-footer__nav {
    display: block;
}

/* Single footer menu — auto-fit columns from top-level items */
.iadea-footer__menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-3);
}

/* Top-level items = column containers */
.iadea-footer__menu > li {
    margin: 0;
    padding: 0;
}

/* Top-level links = column headings */
.iadea-footer__menu > li > a {
    display: block;
    font-family: var(--font-mono);
    font-size: var(--text-eyebrow);
    line-height: var(--leading-eyebrow);
    font-weight: var(--weight-regular);
    letter-spacing: var(--tracking-eyebrow);
    text-transform: uppercase;
    color: var(--color-mint);
    margin: 0 0 var(--space-2) 0;
}

.iadea-footer__menu > li > a:hover {
    opacity: 1;
    color: var(--color-cream-on-dark);
}

/* Sub-menu = link list under each heading */
.iadea-footer__menu > li > .sub-menu {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.iadea-footer__menu > li > .sub-menu li a {
    font-family: var(--font-display);
    font-size: var(--text-small);
    font-weight: var(--weight-light);
    color: var(--color-cream-on-dark);
    transition: color var(--duration-fast) var(--ease-out);
}

.iadea-footer__menu > li > .sub-menu li a:hover {
    opacity: 1;
    color: var(--color-cream-on-dark);
}

/* Base bar */
.iadea-footer__base {
    max-width: var(--artboard-max);
    margin: 0 auto;
    padding: var(--space-2) var(--grid-margin);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
}

.iadea-footer__copy {
    font-family: var(--font-mono);
    font-size: var(--text-caption);
    line-height: var(--leading-caption);
    letter-spacing: var(--tracking-caption);
    color: var(--color-cream-on-dark);
    margin: 0;
}

.iadea-footer__legal {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.iadea-footer__legal a {
    font-family: var(--font-mono);
    font-size: var(--text-caption);
    line-height: var(--leading-caption);
    letter-spacing: var(--tracking-caption);
    text-transform: uppercase;
    color: var(--color-cream-on-dark);
    transition: color var(--duration-fast) var(--ease-out);
}

.iadea-footer__legal a:hover {
    opacity: 1;
    color: var(--color-cream-on-dark);
}

.iadea-footer__legal ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.iadea-footer__legal li {
    margin: 0;
    padding: 0;
}


/* ==========================================================================
 * 8. RESPONSIVE — TABLET (≤ 1024px)
 * ========================================================================== */

@media (max-width: 1024px) {

    :root {
        --text-display-xl:  52px;
        --leading-display-xl: 58px;
        --text-display-l:   40px;
        --leading-display-l:  48px;
        --text-headline:    32px;
        --leading-headline: 40px;
        --grid-margin:      40px;
        --space-section:    80px;
    }

    /* Hide desktop nav and CTA, show hamburger */
    .iadea-header__nav,
    .iadea-header__cta {
        display: none;
    }

    .iadea-header__hamburger {
        display: flex;
    }

    .iadea-header__bar {
        grid-template-columns: auto auto;
        justify-content: space-between;
    }

    /* Footer: stack brand above nav */
    .iadea-footer__grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    /* Nav columns: 2-column grid on tablet */
    .iadea-footer__menu {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }
}


/* ==========================================================================
 * 9. RESPONSIVE — MOBILE (≤ 767px)
 * ========================================================================== */

@media (max-width: 767px) {

    :root {
        --text-display-xl:  36px;
        --leading-display-xl: 42px;
        --text-display-l:   28px;
        --leading-display-l:  34px;
        --text-headline:    24px;
        --leading-headline: 30px;
        --text-subhead:     22px;
        --leading-subhead:  28px;
        --grid-margin:      20px;
        --space-section:    60px;
    }

    /* Footer: single column */
    .iadea-footer__grid {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .iadea-footer__menu {
        grid-template-columns: 1fr;
        gap: var(--space-6);
    }

    .iadea-footer__base {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-2);
    }

    .iadea-footer__legal {
        flex-wrap: wrap;
        gap: var(--space-2);
    }
}


/* ==========================================================================
 * 10. MOBILE NAV DRAWER
 *
 * Activated by JS adding .is-open to [data-iadea-header].
 * The <nav> slides in from the right as a full-screen overlay.
 * ========================================================================== */

@media (max-width: 1024px) {

    /* The nav becomes the full-screen drawer */
    .iadea-header__nav {
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        justify-content: flex-start;
        position: fixed;
        inset: 0;
        background-color: var(--color-cream);
        z-index: calc(var(--z-header) + 1);
        padding: calc(var(--header-height) + var(--space-6)) var(--grid-margin) var(--grid-margin);
        overflow-y: auto;
        transform: translateX(100%);
        transition: transform var(--duration-slow) var(--ease-out);
    }

    .iadea-header.is-open .iadea-header__nav {
        transform: translateX(0);
    }

    /* Stack menu vertically */
    .iadea-header__menu {
        flex-direction: column;
        align-items: flex-start;
        width: 100%;
        gap: 0;
    }

    /* Top-level links — large, full-width */
    .iadea-header__menu > li {
        width: 100%;
        border-bottom: var(--border-hairline);
    }

    .iadea-header__menu > li > a {
        height: auto;
        padding: var(--space-2) 0;
        font-size: var(--text-subhead);
        font-weight: var(--weight-light);
    }

    /* Hide desktop CSS chevron on mobile — JS toggle button replaces it */
    .iadea-header__menu > li.menu-item-has-children > a::after {
        display: none;
    }

    /* Hide URL arrow on mobile — drawer has different interaction */
    .iadea-header__menu > li:not([data-no-link]):not(.menu-item-has-children) > a::after {
        display: none;
    }

    /* Show toggle buttons on mobile */
    .iadea-header__toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 36px;
        height: 36px;
        color: var(--color-ink);
        transition: transform var(--duration-base) var(--ease-out);
    }

    .iadea-header__menu li.is-expanded > .iadea-header__toggle {
        transform: rotate(180deg);
    }

    /* Sub-menus — accordion, not absolute */
    .iadea-header__menu .sub-menu {
        position: static;
        opacity: 1;
        visibility: hidden;
        transform: none;
        max-height: 0;
        overflow: hidden;
        border: none;
        border-top: none;
        padding: 0;
        background: transparent;
        transition: max-height var(--duration-base) var(--ease-in-out),
                    visibility var(--duration-base);
    }

    .iadea-header__menu li.is-expanded > .sub-menu {
        visibility: visible;
        max-height: 1200px;
    }

    .iadea-header__menu .sub-menu li a {
        padding: 8px 16px;
        font-size: var(--text-body);
        color: var(--color-ink-78);
    }

    /* ── Nested sub-menus: accordion at all depths ──────────────────────
     * Previously display:none — now uses max-height accordion pattern
     * matching L2 behavior so all 4 dropdown levels are accessible.
     * ───────────────────────────────────────────────────────────────── */
    .iadea-header__menu .sub-menu .sub-menu {
        position: static;
        opacity: 1;
        visibility: hidden;
        transform: none;
        max-height: 0;
        overflow: hidden;
        border: none;
        padding: 0;
        background: transparent;
        display: block;
        transition: max-height var(--duration-base) var(--ease-in-out),
                    visibility var(--duration-base);
    }

    .iadea-header__menu .sub-menu li.is-expanded > .sub-menu {
        visibility: visible;
        max-height: 600px;
    }

    /* ── Progressive indentation per depth ────────────────────────────── */

    /* L3 — indented */
    .iadea-header__menu .sub-menu .sub-menu li a {
        padding: 6px 16px 6px 32px;
        font-size: var(--text-small);
        color: var(--color-ink-78);
    }

    /* L4 — deeper indent, muted */
    .iadea-header__menu .sub-menu .sub-menu .sub-menu li a {
        padding: 5px 16px 5px 48px;
        font-size: var(--text-small);
        color: var(--color-ink-45);
    }

    /* L5 — deepest indent, smallest */
    .iadea-header__menu .sub-menu .sub-menu .sub-menu .sub-menu li a {
        padding: 4px 16px 4px 60px;
        font-size: var(--text-meta);
        color: var(--color-ink-45);
    }

    /* ─── Mega-menu: revert to standard accordion on mobile ─── */
    /* Applies to all three variants: mega-menu, mega-menu-4col, mega-menu-5col */

    .iadea-header__menu > li.mega-menu,
    .iadea-header__menu > li.mega-menu-4col,
    .iadea-header__menu > li.mega-menu-5col {
        position: relative; /* restore so layout isn't affected */
    }

    .iadea-header__menu > li.mega-menu > .sub-menu,
    .iadea-header__menu > li.mega-menu-4col > .sub-menu,
    .iadea-header__menu > li.mega-menu-5col > .sub-menu {
        /* Override the full-width desktop panel */
        top: auto;
        left: auto;
        right: auto;
        width: auto;
        min-width: 0;
        padding: 0;
        border: none;
        border-top: none;
        box-shadow: none;
        display: block; /* override both flex and grid */
        gap: 0;
        /* Standard accordion behaviour */
        position: static;
        opacity: 1;
        visibility: hidden;
        max-height: 0;
        overflow: hidden;
        transform: none;
        transition: max-height var(--duration-base) var(--ease-in-out),
                    visibility var(--duration-base);
    }

    .iadea-header__menu > li.mega-menu.is-expanded > .sub-menu,
    .iadea-header__menu > li.mega-menu-4col.is-expanded > .sub-menu,
    .iadea-header__menu > li.mega-menu-5col.is-expanded > .sub-menu {
        visibility: visible;
        max-height: 1200px; /* tall enough for any mega content */
    }

    /* Columns become plain list rows */
    .iadea-header__menu > li.mega-menu > .sub-menu > li,
    .iadea-header__menu > li.mega-menu-4col > .sub-menu > li,
    .iadea-header__menu > li.mega-menu-5col > .sub-menu > li {
        flex: none;
        padding: 0;
        border-right: none;
        min-width: 0;
    }

    /* Column header: normal size link, not eyebrow or card-title */
    .iadea-header__menu > li.mega-menu > .sub-menu > li > a,
    .iadea-header__menu > li.mega-menu-4col > .sub-menu > li > a,
    .iadea-header__menu > li.mega-menu-5col > .sub-menu > li > a {
        padding: 8px 16px;
        font-family: var(--font-display);
        font-size: var(--text-body);
        font-weight: var(--weight-semibold);
        letter-spacing: 0;
        text-transform: none;
        color: var(--color-ink-78);
        border-bottom: none;
        margin-bottom: 0;
        opacity: 1;
    }

    /* Nested sub-sub-menus stay visible (inline) on mobile — all depths */
    .iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu,
    .iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu,
    .iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu,
    .iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu .sub-menu,
    .iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu .sub-menu,
    .iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu .sub-menu,
    .iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu .sub-menu .sub-menu,
    .iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu .sub-menu .sub-menu,
    .iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu .sub-menu .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        max-height: none;
        overflow: visible;
        display: block;
    }

    .iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu li a,
    .iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu li a,
    .iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu li a {
        padding: 6px 24px;
        font-size: var(--text-small);
        color: var(--color-ink-45);
    }

    /* Mega-menu mobile: L4 links — deeper indent */
    .iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu .sub-menu li a,
    .iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu .sub-menu li a,
    .iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu .sub-menu li a {
        padding: 4px 32px;
        font-size: var(--text-meta);
        color: var(--color-ink-45);
    }

    /* Mega-menu mobile: L5 links — deepest indent */
    .iadea-header__menu > li.mega-menu > .sub-menu > li > .sub-menu .sub-menu .sub-menu li a,
    .iadea-header__menu > li.mega-menu-4col > .sub-menu > li > .sub-menu .sub-menu .sub-menu li a,
    .iadea-header__menu > li.mega-menu-5col > .sub-menu > li > .sub-menu .sub-menu .sub-menu li a {
        padding: 3px 40px;
        font-size: var(--text-caption);
        color: var(--color-ink-45);
    }

    /* Featured column: no Forest bg on mobile */
    .iadea-header__menu > li.mega-menu > .sub-menu > li.featured,
    .iadea-header__menu > li.mega-menu-4col > .sub-menu > li.featured,
    .iadea-header__menu > li.mega-menu-5col > .sub-menu > li.featured {
        background: transparent;
        padding: 0;
        margin-left: 0;
        flex: none;
        border-radius: 0;
    }

    .iadea-header__menu > li.mega-menu > .sub-menu > li.featured > a,
    .iadea-header__menu > li.mega-menu-4col > .sub-menu > li.featured > a,
    .iadea-header__menu > li.mega-menu-5col > .sub-menu > li.featured > a {
        color: var(--color-ink-78);
        border-bottom: none;
    }

    .iadea-header__menu > li.mega-menu > .sub-menu > li.featured > .sub-menu li a,
    .iadea-header__menu > li.mega-menu-4col > .sub-menu > li.featured > .sub-menu li a,
    .iadea-header__menu > li.mega-menu-5col > .sub-menu > li.featured > .sub-menu li a {
        color: var(--color-ink-45);
    }

    /* Show drawer CTA, hide nothing */
    .iadea-header__drawer-cta {
        display: inline-flex;
        align-items: center;
        height: 44px;
        padding: 0 20px;
        margin-top: var(--space-6);
        background-color: var(--color-forest);
        color: var(--color-cream);
        font-family: var(--font-mono);
        font-size: var(--text-eyebrow);
        font-weight: var(--weight-regular);
        letter-spacing: var(--tracking-eyebrow);
        text-transform: uppercase;
        border-radius: var(--border-radius);
    }
}


/* ==========================================================================
 * 11. REDUCED MOTION
 * ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}