/* =====================================================================
   Interlink Digital - Megamenu
   Loaded by includes/header.php only when IDG_MEGAMENU is true.
   Builds entirely on the design tokens in css/styles.css.
   Desktop (> 1024px): full-width hover/click panels under the header.
   Mobile  (<= 1024px): full-height drawer with accordions + sticky CTA.
   ===================================================================== */

:root {
    --mm-panel-bg: linear-gradient(180deg, #14142a 0%, #0f0f1f 100%);
    --mm-hover-bg: rgba(255, 255, 255, 0.04);
    --mm-accent-soft: #c4b5fd;
    --mm-ease: cubic-bezier(0.2, 0.8, 0.2, 1);
    --mm-header-h: var(--header-height);
}

/* Screen-reader only text */
.mm-sr {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ---------- Top level ---------- */
.mm-nav {
    display: flex;
    align-items: center;
}

.mm-list {
    display: flex;
    align-items: center;
    gap: 4px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.mm-trigger {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 14px;
    background: none;
    border: 0;
    border-radius: var(--radius-sm);
    color: var(--color-text-secondary);
    font: inherit;
    font-size: var(--font-size-sm);
    font-weight: 500;
    line-height: 1.2;
    cursor: pointer;
    transition: color var(--transition-fast), background var(--transition-fast);
}

.mm-trigger:hover,
.mm-trigger:focus-visible,
.mm-trigger[aria-expanded="true"] {
    color: var(--color-text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.mm-trigger:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 2px;
}

.mm-trigger-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    text-align: left;
}

.mm-trigger-sub {
    display: none;
}

.mm-trigger .mm-chevron {
    opacity: 0.6;
    transition: transform 200ms var(--mm-ease), opacity var(--transition-fast);
}

.mm-trigger[aria-expanded="true"] .mm-chevron {
    transform: rotate(180deg);
    opacity: 1;
}

/* Accent underline: current section, or the open panel */
.mm-trigger::after {
    content: "";
    position: absolute;
    left: 14px;
    right: 14px;
    bottom: 5px;
    height: 2px;
    border-radius: 2px;
    background: var(--color-accent-gradient);
    opacity: 0;
    transform: scaleX(0.6);
    transition: opacity var(--transition-fast), transform 200ms var(--mm-ease);
}

.mm-trigger.is-current::after,
.mm-trigger[aria-expanded="true"]::after {
    opacity: 1;
    transform: scaleX(1);
}

/* ---------- Panels (shared) ---------- */
.mm-panel[hidden] {
    display: none !important;
}

.mm-panel-inner {
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-lg);
}

.mm-heading {
    margin: 0 0 var(--spacing-sm);
    padding: 0 10px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
}

.mm-links {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.mm-link {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 8px 10px;
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    text-decoration: none;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.mm-link:hover,
.mm-link:focus-visible {
    background: var(--mm-hover-bg);
    color: var(--color-text-primary);
}

.mm-link:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: -2px;
}

.mm-link:hover .mm-link-label,
.mm-link:focus-visible .mm-link-label,
.mm-link[aria-current="page"] .mm-link-label {
    color: var(--mm-accent-soft);
}

.mm-link[aria-current="page"] {
    background: rgba(139, 92, 246, 0.08);
}

.mm-link-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.mm-link-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    line-height: 1.3;
    transition: color var(--transition-fast);
}

.mm-link-label .mm-ext,
.mm-link-label .mm-badge {
    display: inline-block;
    vertical-align: -1px;
    margin-left: 5px;
}

.mm-nowrap {
    white-space: nowrap;
}

.mm-link-desc {
    font-size: var(--font-size-xs);
    line-height: 1.45;
    color: var(--color-text-muted);
}

.mm-ext {
    flex: none;
    opacity: 0.5;
}

.mm-link:hover .mm-ext {
    opacity: 0.9;
}

.mm-badge {
    padding: 2px 6px;
    border-radius: var(--radius-full);
    background: rgba(139, 92, 246, 0.18);
    color: var(--mm-accent-soft);
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    line-height: 1.2;
}

/* Anchor sub-links (Strategy column) */
.mm-sublist {
    list-style: none;
    margin: 2px 0 0 10px;
    padding: 0 0 0 10px;
    border-left: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
}

.mm-sublink {
    display: block;
    padding: 5px 8px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.mm-sublink:hover,
.mm-sublink:focus-visible {
    color: var(--color-text-primary);
    background: var(--mm-hover-bg);
}

/* Platform logo chip */
.mm-logo {
    flex: none;
    width: 54px;
    height: 36px;
    padding: 4px 6px;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--color-border);
    /* flex, not grid: a flex item's percentage height resolves against the
       chip's definite height, so square marks scale down instead of overflowing */
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    transition: border-color var(--transition-fast), background var(--transition-fast);
}

.mm-logo img {
    display: block;
    width: 100%;
    height: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* Photo thumbnail variant: image fills the chip, no inner padding */
.mm-logo--thumb {
    padding: 0;
}

.mm-logo--thumb img {
    object-fit: cover;
}

.mm-logo--mono {
    background: var(--color-accent-gradient);
    border-color: transparent;
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.02em;
}

.mm-link:hover .mm-logo {
    border-color: var(--color-border-hover);
    background: rgba(255, 255, 255, 0.09);
}

/* Feature card */
.mm-feature {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(139, 92, 246, 0.25);
    background: linear-gradient(180deg, var(--color-bg-tertiary) 0%, rgba(139, 92, 246, 0.14) 100%);
    overflow: hidden;
    isolation: isolate;
}

.mm-feature-glow {
    position: absolute;
    top: -60px;
    right: -60px;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(236, 72, 153, 0.28), transparent 70%);
    pointer-events: none;
    z-index: -1;
}

.mm-feature-logo {
    width: 44px;
    height: 44px;
    object-fit: contain;
    margin-bottom: var(--spacing-xs);
}

.mm-feature-eyebrow {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--mm-accent-soft);
}

.mm-feature-title {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: -0.01em;
    line-height: 1.2;
    color: var(--color-text-primary);
}

.mm-feature-desc {
    margin: 0;
    font-size: var(--font-size-sm);
    line-height: 1.5;
    color: var(--color-text-secondary);
}

.mm-feature-cta {
    align-self: flex-start;
    margin-top: var(--spacing-xs);
}

/* Bottom bar */
.mm-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.mm-bar-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.mm-bar-link,
.mm-bar-phone {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast), gap var(--transition-fast);
}

.mm-bar-link:hover,
.mm-bar-phone:hover {
    color: var(--color-text-primary);
}

.mm-bar-link:hover {
    gap: 9px;
}

.mm-bar-link svg {
    color: var(--color-accent-primary);
}

.mm-bar-dot {
    color: var(--color-text-muted);
}

/* Footer row (Platforms): Velox feature strip + Emerging */
.mm-foot {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-md);
    border-top: 1px dashed var(--color-border);
}

.mm-emerging {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.mm-emerging .mm-heading {
    margin: 0;
}

.mm-links--row {
    flex-direction: row;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.mm-links--row .mm-link {
    padding: 6px 10px;
    align-items: center;
}

.mm-links--row .mm-link-text {
    flex-direction: row;
    align-items: baseline;
    gap: 8px;
}

/* ---------- Header CTA / toggle ---------- */
.mm-header-cta {
    white-space: nowrap;
}

.mm-toggle {
    position: relative;
}

.mm-toggle span {
    transition: transform 220ms var(--mm-ease), opacity 160ms ease;
    transform-origin: center;
}

.mm-toggle[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.mm-toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0.4);
}

.mm-toggle[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Drawer footer is mobile-only */
.mm-drawer-foot {
    display: none;
}

/* =====================================================================
   DESKTOP (> 1024px)
   ===================================================================== */
@media (min-width: 1025px) {

    .mm-panel--wide {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--mm-panel-bg);
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-lg), 0 40px 80px -30px rgba(0, 0, 0, 0.7);
        opacity: 0;
        transform: translateY(-6px);
        transition: opacity 180ms var(--mm-ease), transform 180ms var(--mm-ease);
        will-change: opacity, transform;
    }

    .mm-panel--wide::before {
        /* thin accent line where the panel meets the header */
        content: "";
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 1px;
        background: linear-gradient(90deg, transparent, rgba(139, 92, 246, 0.5), rgba(236, 72, 153, 0.4), transparent);
        opacity: 0.8;
    }

    .mm-panel--compact {
        position: absolute;
        top: 100%;
        left: 0; /* set to the trigger's x by js/megamenu.js */
        width: 300px;
        background: var(--mm-panel-bg);
        border: 1px solid var(--color-border);
        border-top: 0;
        border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        box-shadow: var(--shadow-lg);
        opacity: 0;
        transform: translateY(-6px);
        transition: opacity 180ms var(--mm-ease), transform 180ms var(--mm-ease);
    }

    .mm-panel--compact .mm-panel-inner {
        padding: var(--spacing-sm);
    }

    .mm-panel.is-open {
        opacity: 1;
        transform: translateY(0);
    }

    .mm-grid {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr)) 268px;
        gap: var(--spacing-xl) var(--spacing-lg);
        align-items: start;
    }

    .mm-grid .mm-feature {
        grid-column: 5;
        grid-row: 1;
        align-self: start;
    }

    /* Platforms: four equal columns; the feature lives in the footer strip instead */
    .mm-grid--platforms {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }

    .mm-link--platform {
        align-items: center;
    }

    .mm-link--platform .mm-link-desc {
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }

    .mm-foot {
        display: grid;
        grid-template-columns: minmax(0, 3fr) minmax(0, 2fr);
        gap: var(--spacing-xl);
        align-items: center;
    }

    /* Feature card as a horizontal strip: logo | eyebrow / title / desc | CTA */
    .mm-foot .mm-feature {
        display: grid;
        grid-template-columns: auto minmax(0, 1fr) auto;
        grid-template-areas:
            "logo eyebrow cta"
            "logo title cta"
            "logo desc cta";
        column-gap: var(--spacing-md);
        row-gap: 2px;
        align-items: center;
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .mm-foot .mm-feature-logo {
        grid-area: logo;
        margin: 0;
    }

    .mm-foot .mm-feature-eyebrow {
        grid-area: eyebrow;
    }

    .mm-foot .mm-feature-title {
        grid-area: title;
        font-size: var(--font-size-lg);
    }

    .mm-foot .mm-feature-desc {
        grid-area: desc;
        font-size: var(--font-size-xs);
    }

    .mm-foot .mm-feature-cta {
        grid-area: cta;
        margin: 0;
        align-self: center;
        justify-self: end;
    }

    /* Emerging: compact logo + name tokens (descriptors show on mobile / sitemap) */
    .mm-links--row .mm-link-desc {
        display: none;
    }

    .mm-links--compact .mm-link {
        padding: 9px 12px;
    }
}

/* =====================================================================
   MOBILE / TABLET (<= 1024px): drawer + accordions
   ===================================================================== */
@media (max-width: 1024px) {

    html.mm-lock,
    body.mm-lock {
        overflow: hidden;
    }

    /* Override the legacy .main-nav mobile rules from styles.css */
    .site-header .mm-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        height: calc(100vh - var(--mm-header-h) + 2px);
        height: calc(100dvh - var(--mm-header-h) + 2px);
        padding: 0;
        background: var(--color-bg-primary);
        border-top: 1px solid var(--color-border);
        flex-direction: column;
        align-items: stretch;
        overflow: hidden;
    }

    .site-header .mm-nav.is-open {
        display: flex;
        animation: mm-drawer-in 220ms var(--mm-ease);
    }

    @keyframes mm-drawer-in {
        from { opacity: 0; transform: translateY(-8px); }
        to   { opacity: 1; transform: translateY(0); }
    }

    .mm-list {
        flex: 1 1 auto;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-xl);
    }

    .mm-item {
        border-bottom: 1px solid var(--color-border);
    }

    .mm-trigger {
        width: 100%;
        justify-content: space-between;
        padding: var(--spacing-md) 4px;
        font-size: var(--font-size-lg);
        font-weight: 600;
        color: var(--color-text-primary);
        border-radius: 0;
    }

    .mm-trigger:hover,
    .mm-trigger[aria-expanded="true"] {
        background: none;
    }

    .mm-trigger::after {
        display: none;
    }

    .mm-trigger.is-current .mm-trigger-label {
        background: var(--color-accent-gradient);
        -webkit-background-clip: text;
        background-clip: text;
        -webkit-text-fill-color: transparent;
    }

    .mm-trigger-sub {
        display: block;
        margin-top: 2px;
        font-size: var(--font-size-xs);
        font-weight: 400;
        color: var(--color-text-muted);
        letter-spacing: 0;
    }

    .mm-trigger[aria-expanded="true"] .mm-trigger-sub {
        display: none;
    }

    .mm-trigger .mm-chevron {
        width: 18px;
        height: 18px;
        opacity: 0.7;
    }

    /* Accordion body */
    .mm-panel {
        position: static;
        background: none;
        border: 0;
        box-shadow: none;
    }

    .mm-panel-inner {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-lg);
        padding: 0 0 var(--spacing-lg);
    }

    .mm-panel-inner.container {
        max-width: none;
    }

    .mm-grid {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    /* Platforms footer row dissolves; its children join the accordion column */
    .mm-foot {
        display: contents;
    }

    /* Feature card first inside the accordion as a compact banner */
    .mm-feature {
        order: -1;
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
        gap: var(--spacing-xs) var(--spacing-md);
        padding: var(--spacing-md);
    }

    .mm-feature-logo {
        width: 36px;
        height: 36px;
        margin: 0;
    }

    .mm-feature-eyebrow {
        flex-basis: 100%;
    }

    .mm-feature-title {
        font-size: var(--font-size-lg);
    }

    .mm-feature-desc {
        flex-basis: 100%;
        font-size: var(--font-size-xs);
    }

    .mm-feature-cta {
        margin-top: var(--spacing-xs);
        padding: 6px 14px;
        font-size: var(--font-size-xs);
    }

    .mm-heading {
        padding: 0 4px;
    }

    .mm-link {
        padding: 10px 4px;
    }

    .mm-link-label {
        font-size: var(--font-size-base);
    }

    .mm-link-desc {
        font-size: var(--font-size-sm);
    }

    .mm-sublist {
        margin-left: 4px;
    }

    .mm-sublink {
        padding: 8px;
        font-size: var(--font-size-sm);
    }

    .mm-emerging {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
    }

    .mm-links--row {
        flex-direction: column;
        gap: 2px;
    }

    .mm-links--row .mm-link {
        padding: 10px 4px;
    }

    .mm-links--row .mm-link-text {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }

    .mm-bar {
        margin-top: 0; /* spacing comes from the panel-inner column gap */
        padding-top: var(--spacing-md);
    }

    .mm-bar-right {
        display: none; /* phone + book a call live in the sticky drawer footer */
    }

    .mm-links--compact .mm-link {
        padding: 12px 4px;
    }

    /* Sticky drawer footer: single conversion route */
    .mm-drawer-foot {
        flex: none;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
        padding: var(--spacing-md) var(--spacing-lg) calc(var(--spacing-md) + env(safe-area-inset-bottom, 0px));
        background: rgba(13, 13, 26, 0.96);
        border-top: 1px solid var(--color-border);
        box-shadow: 0 -12px 30px -16px rgba(0, 0, 0, 0.6);
    }

    .mm-drawer-cta {
        width: 100%;
        padding: var(--spacing-md) var(--spacing-xl);
        font-size: var(--font-size-base);
    }

    .mm-drawer-phone {
        display: inline-flex;
        align-items: center;
        gap: 6px;
        font-size: var(--font-size-sm);
        font-weight: 600;
        color: var(--color-text-secondary);
    }

    .mm-drawer-phone:hover {
        color: var(--color-text-primary);
    }

    .header-actions .mm-header-cta {
        display: none;
    }

    .mm-toggle {
        display: flex;
    }
}

/* ---------- Site footer (flag on only, via body.has-megamenu) ----------
   The Platforms list is the longest column, so it gets a double-width
   grid track and flows as two balanced sub-columns under one heading. */
@media (min-width: 1025px) {
    .has-megamenu .footer-grid {
        grid-template-columns: 1.5fr 1fr 2fr 1fr;
        gap: var(--spacing-2xl);
    }
}

@media (min-width: 480px) {
    .has-megamenu .footer-links--platforms {
        column-count: 2;
        column-gap: var(--spacing-lg);
    }

    .has-megamenu .footer-links--platforms li {
        break-inside: avoid;
    }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
    .mm-panel,
    .mm-panel--wide,
    .mm-panel--compact,
    .mm-trigger .mm-chevron,
    .mm-trigger::after,
    .mm-toggle span,
    .mm-bar-link {
        transition: none !important;
    }

    .mm-panel--wide,
    .mm-panel--compact {
        transform: none;
    }

    .site-header .mm-nav.is-open {
        animation: none;
    }
}