/* ==========================================================================
   navigation.css — Meras X Theme
   Fixed header, button system, mobile overlay, lang switcher, skip link.
   Mobile-first. Desktop breakpoint: 1024px (--mx-bp-desktop).
   All animations respect prefers-reduced-motion.
   ========================================================================== */


/* --------------------------------------------------------------------------
   1. Skip Link
   -------------------------------------------------------------------------- */

.mx-skip-link {
    position: fixed;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    z-index: calc(var(--mx-z-modal) + 10);
    display: inline-block;
    padding: var(--mx-space-3) var(--mx-space-6);
    background-color: var(--mx-gold);
    color: var(--mx-black);
    font-family: var(--mx-font-sans);
    font-size: var(--mx-text-sm);
    font-weight: 600;
    letter-spacing: var(--mx-tracking-wide);
    text-transform: uppercase;
    border-radius: 0 0 var(--mx-radius) var(--mx-radius);
    text-decoration: none;
    white-space: nowrap;
    transition:
        top var(--mx-duration-fast) var(--mx-ease),
        box-shadow var(--mx-duration-fast) var(--mx-ease);
}

.mx-skip-link:focus {
    top: 0;
    outline: none;
    box-shadow: 0 4px 24px rgba(212, 175, 55, 0.35);
}

@media (prefers-reduced-motion: reduce) {
    .mx-skip-link {
        transition: none;
    }
}


/* --------------------------------------------------------------------------
   2. Primary Navigation Bar — .mx-nav
   -------------------------------------------------------------------------- */

.mx-nav {
    position: fixed;
    top: 0;
    inset-inline-start: 0;
    width: 100%;
    background-color: var(--mx-black);
    border-bottom: var(--mx-border);
    z-index: var(--mx-z-sticky);

    /* Entry animation — slides down on load */
    opacity: 1;
    transform: translateY(0);
    transition:
        opacity           var(--mx-duration) var(--mx-ease),
        transform         var(--mx-duration) var(--mx-ease),
        background-color  var(--mx-duration) var(--mx-ease),
        border-color      var(--mx-duration) var(--mx-ease),
        backdrop-filter   var(--mx-duration) var(--mx-ease);
    will-change: transform, opacity, background-color;
}

/* State: hidden (JS adds when scrolling down rapidly) */
.mx-nav.is-hidden {
    opacity: 0;
    transform: translateY(-100%);
    pointer-events: none;
}

/* State: scrolled — blur the background for depth */
.mx-nav.is-scrolled {
    background-color: rgba(10, 10, 10, 0.82);
    backdrop-filter: blur(20px) saturate(160%);
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    border-bottom-color: rgba(255, 255, 255, 0.05);
    box-shadow: 0 1px 32px rgba(0, 0, 0, 0.6);
}

@media (prefers-reduced-motion: reduce) {
    .mx-nav,
    .mx-nav.is-scrolled {
        transition: none;
    }
}


/* --------------------------------------------------------------------------
   3. Inner Flex Container — .mx-nav__inner
   -------------------------------------------------------------------------- */

.mx-nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
    max-width: var(--mx-container);
    margin-inline: auto;
    padding-inline: var(--mx-gutter);
    gap: var(--mx-space-6);
}


/* --------------------------------------------------------------------------
   4. Logo — .mx-nav__logo
   -------------------------------------------------------------------------- */

.mx-nav__logo {
    display: flex;
    align-items: center;
    gap: var(--mx-space-3);
    flex-shrink: 0;
    text-decoration: none;
    color: var(--mx-white);
}

.mx-nav__logo img,
.mx-nav__logo svg {
    display: block;
    height: 32px;
    width: auto;
}

/* Wordmark / brand text beside the mark */
.mx-nav__logo-text {
    font-family: var(--mx-font-sans);
    font-size: var(--mx-text-sm);
    font-weight: 600;
    letter-spacing: var(--mx-tracking-wide);
    text-transform: uppercase;
    color: var(--mx-white);
    line-height: 1;
}


/* --------------------------------------------------------------------------
   5. Desktop Navigation Links — .mx-nav__desktop-links
   Hidden on mobile, shown at 1024px+
   -------------------------------------------------------------------------- */

.mx-nav__desktop-links {
    display: none; /* mobile-first: hidden */
}

@media (min-width: 1024px) {
    .mx-nav__desktop-links {
        display: flex;
        align-items: center;
        flex: 1 1 auto;
        justify-content: center;
    }
}


/* --------------------------------------------------------------------------
   6. Nav List — .mx-nav__list
   -------------------------------------------------------------------------- */

.mx-nav__list {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: var(--mx-space-8);
    list-style: none;
    margin: 0;
    padding: 0;
}


/* --------------------------------------------------------------------------
   7. Nav Item & Link — .mx-nav__item / .mx-nav__link
   -------------------------------------------------------------------------- */

.mx-nav__item {
    position: relative;
}

.mx-nav__link {
    display: inline-flex;
    align-items: center;
    gap: var(--mx-space-1);
    padding-block: var(--mx-space-2);
    color: var(--mx-white-70);
    font-family: var(--mx-font-sans);
    font-size: var(--mx-text-sm);
    font-weight: 500;
    letter-spacing: var(--mx-tracking-wide);
    text-transform: uppercase;
    text-decoration: none;
    white-space: nowrap;
    line-height: 1;
    position: relative;
    transition: color var(--mx-duration-fast) var(--mx-ease);
}

/* Underline accent drawn via pseudo-element */
.mx-nav__link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--mx-gold);
    transform: scaleX(0);
    transform-origin: right center;
    transition: transform var(--mx-duration-fast) var(--mx-ease);
}

.mx-nav__link:hover,
.mx-nav__link.is-active,
.mx-nav__link[aria-current="page"] {
    color: var(--mx-white);
}

.mx-nav__link:hover::after,
.mx-nav__link.is-active::after,
.mx-nav__link[aria-current="page"]::after {
    transform: scaleX(1);
    transform-origin: left center;
}

@media (prefers-reduced-motion: reduce) {
    .mx-nav__link,
    .mx-nav__link::after {
        transition: none;
    }
}


/* --------------------------------------------------------------------------
   8. Actions Area — .mx-nav__actions
   -------------------------------------------------------------------------- */

.mx-nav__actions {
    display: flex;
    align-items: center;
    gap: var(--mx-space-4);
    flex-shrink: 0;
}


/* --------------------------------------------------------------------------
   9. Button System — .mx-btn
   -------------------------------------------------------------------------- */

.mx-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--mx-space-2);
    padding: 12px 28px;
    font-family: var(--mx-font-sans);
    font-size: var(--mx-text-sm);
    font-weight: 600;
    letter-spacing: var(--mx-tracking-wide);
    text-transform: uppercase;
    text-decoration: none;
    white-space: nowrap;
    line-height: 1;
    border-radius: var(--mx-radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition:
        color            var(--mx-duration-fast) var(--mx-ease),
        background-color var(--mx-duration-fast) var(--mx-ease),
        border-color     var(--mx-duration-fast) var(--mx-ease),
        box-shadow       var(--mx-duration-fast) var(--mx-ease),
        transform        var(--mx-duration-fast) var(--mx-ease);
    position: relative;
    overflow: hidden;
}

.mx-btn:focus-visible {
    outline: 2px solid var(--mx-gold);
    outline-offset: 3px;
}

/* Active press micro-interaction */
.mx-btn:active {
    transform: translateY(1px);
}

@media (prefers-reduced-motion: reduce) {
    .mx-btn {
        transition: none;
    }
    .mx-btn:active {
        transform: none;
    }
}

/* --- 9a. Primary — gold fill -------------------------------------------- */

.mx-btn--primary {
    background-color: var(--mx-gold);
    border-color: var(--mx-gold);
    color: var(--mx-black);
}

.mx-btn--primary:hover {
    background-color: var(--mx-gold-hover);
    border-color: var(--mx-gold-hover);
    box-shadow: 0 0 24px rgba(212, 175, 55, 0.28);
    color: var(--mx-black);
}

.mx-btn--primary:active {
    background-color: #b89928;
    border-color: #b89928;
    box-shadow: none;
}

/* --- 9b. Secondary — outlined ------------------------------------------- */

.mx-btn--secondary {
    background-color: transparent;
    border-color: var(--mx-white-70);
    color: var(--mx-white);
}

.mx-btn--secondary:hover {
    border-color: var(--mx-gold);
    color: var(--mx-gold);
    box-shadow: 0 0 16px rgba(212, 175, 55, 0.12);
}

.mx-btn--secondary:active {
    border-color: var(--mx-gold-hover);
    color: var(--mx-gold-hover);
    box-shadow: none;
}

/* --- 9c. Ghost — text-only ---------------------------------------------- */

.mx-btn--ghost {
    background-color: transparent;
    border-color: transparent;
    color: var(--mx-white-70);
    padding-inline: var(--mx-space-3);
}

.mx-btn--ghost:hover {
    color: var(--mx-white);
    background-color: var(--mx-white-12);
}

.mx-btn--ghost:active {
    color: var(--mx-white);
    background-color: rgba(255, 255, 255, 0.08);
}

/* --- 9d. Icon — square icon-only button ---------------------------------- */

.mx-btn--icon {
    padding: 10px;
    border-radius: var(--mx-radius);
    aspect-ratio: 1 / 1;
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    border-color: var(--mx-black-border);
    color: var(--mx-white-70);
    background-color: transparent;
}

.mx-btn--icon:hover {
    color: var(--mx-white);
    background-color: var(--mx-white-12);
    border-color: var(--mx-white-12);
}

.mx-btn--icon svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    pointer-events: none;
}


/* --------------------------------------------------------------------------
   10. Hamburger Toggle — .mx-nav__hamburger
   Visible on mobile (< 1024px). Three-line icon drawn in CSS.
   -------------------------------------------------------------------------- */

.mx-nav__hamburger {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    flex-shrink: 0;
    background: none;
    border: 1px solid var(--mx-black-border);
    border-radius: var(--mx-radius);
    cursor: pointer;
    color: var(--mx-white-70);
    padding: 0;
    position: relative;
    transition:
        border-color     var(--mx-duration-fast) var(--mx-ease),
        color            var(--mx-duration-fast) var(--mx-ease),
        background-color var(--mx-duration-fast) var(--mx-ease);
}

.mx-nav__hamburger:hover {
    border-color: var(--mx-white-40);
    color: var(--mx-white);
    background-color: var(--mx-white-12);
}

.mx-nav__hamburger:focus-visible {
    outline: 2px solid var(--mx-gold);
    outline-offset: 3px;
}

/* Three-line icon via pseudo-elements */
.mx-nav__hamburger-icon {
    display: block;
    position: relative;
    width: 18px;
    height: 2px;
    background-color: currentColor;
    border-radius: 2px;
    transition:
        transform        var(--mx-duration-fast) var(--mx-ease),
        background-color var(--mx-duration-fast) var(--mx-ease),
        opacity          var(--mx-duration-fast) var(--mx-ease);
}

.mx-nav__hamburger-icon::before,
.mx-nav__hamburger-icon::after {
    content: '';
    display: block;
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: currentColor;
    border-radius: 2px;
    transition:
        transform var(--mx-duration-fast) var(--mx-ease),
        opacity   var(--mx-duration-fast) var(--mx-ease),
        top       var(--mx-duration-fast) var(--mx-ease);
}

.mx-nav__hamburger-icon::before {
    top: -6px;
}

.mx-nav__hamburger-icon::after {
    top: 6px;
}

/* Morphed state — X when mobile nav is open */
.mx-nav__hamburger[aria-expanded="true"] .mx-nav__hamburger-icon {
    background-color: transparent; /* middle bar fades */
}

.mx-nav__hamburger[aria-expanded="true"] .mx-nav__hamburger-icon::before {
    top: 0;
    transform: rotate(45deg);
}

.mx-nav__hamburger[aria-expanded="true"] .mx-nav__hamburger-icon::after {
    top: 0;
    transform: rotate(-45deg);
}

/* Hide hamburger on desktop */
@media (min-width: 1024px) {
    .mx-nav__hamburger {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .mx-nav__hamburger,
    .mx-nav__hamburger-icon,
    .mx-nav__hamburger-icon::before,
    .mx-nav__hamburger-icon::after {
        transition: none;
    }
}


/* --------------------------------------------------------------------------
   11. Mobile Navigation Overlay — .mx-mobile-nav
   -------------------------------------------------------------------------- */

.mx-mobile-nav {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: var(--mx-z-overlay);
    background-color: var(--mx-black);
    transform: translateX(-100%);
    visibility: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    transition:
        transform  var(--mx-duration) var(--mx-ease),
        visibility var(--mx-duration) linear;
}

/* Decorative gold accent line on the right edge */
.mx-mobile-nav::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    width: 1px;
    background: linear-gradient(
        to bottom,
        transparent 0%,
        var(--mx-gold) 30%,
        var(--mx-gold) 70%,
        transparent 100%
    );
    opacity: 0.4;
    pointer-events: none;
}

/* Open state */
.mx-mobile-nav.is-open {
    transform: translateX(0);
    visibility: visible;
}

/* Body scroll lock — applied by JS when mobile nav opens */
body.mx-nav-open {
    overflow: hidden;
}

/* Hide mobile overlay on desktop */
@media (min-width: 1024px) {
    .mx-mobile-nav {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    .mx-mobile-nav {
        transform: none;
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--mx-duration-fast) linear,
                    visibility var(--mx-duration-fast) linear;
    }
    .mx-mobile-nav.is-open {
        opacity: 1;
        pointer-events: auto;
    }
}


/* --------------------------------------------------------------------------
   12. Mobile Nav Inner — .mx-mobile-nav__inner
   -------------------------------------------------------------------------- */

.mx-mobile-nav__inner {
    display: flex;
    flex-direction: column;
    min-height: 100%;
    padding-top: 88px; /* clears fixed nav bar (72px + buffer) */
    padding-bottom: var(--mx-space-12);
    padding-inline: var(--mx-gutter);
    gap: var(--mx-space-2);
}

/* Section heading inside mobile nav */
.mx-mobile-nav__label {
    font-family: var(--mx-font-sans);
    font-size: var(--mx-text-xs);
    font-weight: 500;
    letter-spacing: var(--mx-tracking-widest);
    text-transform: uppercase;
    color: var(--mx-white-40);
    margin-top: var(--mx-space-6);
    margin-bottom: var(--mx-space-2);
}

/* Divider */
.mx-mobile-nav__divider {
    width: 100%;
    height: 1px;
    background-color: var(--mx-black-border);
    margin-block: var(--mx-space-6);
}

/* Footer area of mobile nav (actions / lang switcher) */
.mx-mobile-nav__footer {
    margin-top: auto;
    padding-top: var(--mx-space-8);
    display: flex;
    flex-direction: column;
    gap: var(--mx-space-4);
    border-top: var(--mx-border);
}


/* --------------------------------------------------------------------------
   13. Mobile Nav Links — .mx-mobile-nav__link
   -------------------------------------------------------------------------- */

.mx-mobile-nav__link {
    display: block;
    padding-top: var(--mx-space-3);
    padding-bottom: var(--mx-space-3);
    padding-left: 0;
    font-family: var(--mx-font-sans);
    font-size: var(--mx-text-2xl);
    font-weight: 600;
    letter-spacing: var(--mx-tracking-tight);
    color: var(--mx-white);
    text-decoration: none;
    line-height: var(--mx-leading-tight);
    border-bottom: 1px solid var(--mx-black-border);
    transition:
        color       var(--mx-duration-fast) var(--mx-ease),
        padding-left var(--mx-duration-fast) var(--mx-ease);
}

.mx-mobile-nav__link:hover,
.mx-mobile-nav__link.is-active,
.mx-mobile-nav__link[aria-current="page"] {
    color: var(--mx-gold);
    padding-left: var(--mx-space-3);
}

.mx-mobile-nav__link:last-of-type {
    border-bottom: none;
}

/* Staggered entrance animation */
.mx-mobile-nav.is-open .mx-mobile-nav__link {
    animation: mxMobileNavLinkIn var(--mx-duration) var(--mx-ease) both;
}

.mx-mobile-nav.is-open .mx-mobile-nav__link:nth-child(1) { animation-delay: 0.05s; }
.mx-mobile-nav.is-open .mx-mobile-nav__link:nth-child(2) { animation-delay: 0.10s; }
.mx-mobile-nav.is-open .mx-mobile-nav__link:nth-child(3) { animation-delay: 0.15s; }
.mx-mobile-nav.is-open .mx-mobile-nav__link:nth-child(4) { animation-delay: 0.20s; }
.mx-mobile-nav.is-open .mx-mobile-nav__link:nth-child(5) { animation-delay: 0.25s; }
.mx-mobile-nav.is-open .mx-mobile-nav__link:nth-child(6) { animation-delay: 0.30s; }
.mx-mobile-nav.is-open .mx-mobile-nav__link:nth-child(7) { animation-delay: 0.35s; }
.mx-mobile-nav.is-open .mx-mobile-nav__link:nth-child(8) { animation-delay: 0.40s; }

@keyframes mxMobileNavLinkIn {
    from {
        opacity: 0;
        transform: translateX(-1.5rem);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@media (prefers-reduced-motion: reduce) {
    .mx-mobile-nav__link {
        transition: color var(--mx-duration-fast) linear;
        padding-left: 0 !important;
    }
    .mx-mobile-nav.is-open .mx-mobile-nav__link {
        animation: none;
    }
}


/* --------------------------------------------------------------------------
   14. Mobile Nav Close Button — .mx-mobile-nav__close
   -------------------------------------------------------------------------- */

.mx-mobile-nav__close {
    position: absolute;
    top: var(--mx-space-5);
    right: var(--mx-gutter);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: none;
    border: 1px solid rgba(212, 175, 55, 0.3);
    border-radius: var(--mx-radius);
    color: var(--mx-gold);
    cursor: pointer;
    padding: 0;
    flex-shrink: 0;
    transition:
        background-color var(--mx-duration-fast) var(--mx-ease),
        border-color     var(--mx-duration-fast) var(--mx-ease),
        color            var(--mx-duration-fast) var(--mx-ease);
}

.mx-mobile-nav__close:hover {
    background-color: var(--mx-gold-dim);
    border-color: var(--mx-gold);
    color: var(--mx-white);
}

.mx-mobile-nav__close:focus-visible {
    outline: 2px solid var(--mx-gold);
    outline-offset: 3px;
}

/* X icon drawn in CSS */
.mx-mobile-nav__close::before,
.mx-mobile-nav__close::after {
    content: '';
    display: block;
    position: absolute;
    width: 14px;
    height: 1.5px;
    background-color: currentColor;
    border-radius: 2px;
}

.mx-mobile-nav__close::before {
    transform: rotate(45deg);
}

.mx-mobile-nav__close::after {
    transform: rotate(-45deg);
}

@media (prefers-reduced-motion: reduce) {
    .mx-mobile-nav__close {
        transition: none;
    }
}


/* --------------------------------------------------------------------------
   15. Language Switcher — .mx-lang-switcher
   -------------------------------------------------------------------------- */

.mx-lang-switcher {
    display: inline-flex;
    align-items: center;
    gap: 0;
    border: 1px solid var(--mx-black-border);
    border-radius: var(--mx-radius);
    overflow: hidden;
    flex-shrink: 0;
}

.mx-lang-switcher__item {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 12px;
    font-family: var(--mx-font-sans);
    font-size: var(--mx-text-xs);
    font-weight: 500;
    letter-spacing: var(--mx-tracking-wider);
    text-transform: uppercase;
    color: var(--mx-white-70);
    text-decoration: none;
    line-height: 1;
    background-color: transparent;
    border: none;
    cursor: pointer;
    position: relative;
    transition:
        color            var(--mx-duration-fast) var(--mx-ease),
        background-color var(--mx-duration-fast) var(--mx-ease);
}

/* Separator between items */
.mx-lang-switcher__item + .mx-lang-switcher__item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20%;
    bottom: 20%;
    width: 1px;
    background-color: var(--mx-black-border);
}

.mx-lang-switcher__item:hover {
    color: var(--mx-white);
    background-color: var(--mx-white-12);
}

.mx-lang-switcher__item.is-active,
.mx-lang-switcher__item[aria-current="true"] {
    color: var(--mx-gold);
    background-color: var(--mx-gold-dim);
}

.mx-lang-switcher__item:focus-visible {
    outline: 2px solid var(--mx-gold);
    outline-offset: -2px;
    z-index: 1;
}

@media (prefers-reduced-motion: reduce) {
    .mx-lang-switcher__item {
        transition: none;
    }
}


/* --------------------------------------------------------------------------
   16. Responsive overrides
   -------------------------------------------------------------------------- */

/* On mobile, collapse CTA buttons and lang switcher out of nav bar */
@media (max-width: 1023px) {
    .mx-nav__actions .mx-btn--primary,
    .mx-nav__actions .mx-btn--secondary,
    .mx-nav__actions .mx-lang-switcher {
        display: none;
    }
}

/* On large screens, tighten mobile nav link size */
@media (min-width: 480px) {
    .mx-mobile-nav__link {
        font-size: clamp(var(--mx-text-2xl), 5vw, 3.5rem);
    }
}


/* --------------------------------------------------------------------------
   17. RTL — [dir="rtl"] overrides where logical properties are insufficient
   -------------------------------------------------------------------------- */

[dir="rtl"] .mx-mobile-nav__close {
    right: auto;
    left: var(--mx-gutter);
}

[dir="rtl"] .mx-mobile-nav::before {
    right: auto;
    left: 0;
}


/* --------------------------------------------------------------------------
   18. High-contrast / forced-colours mode
   -------------------------------------------------------------------------- */

@media (forced-colors: active) {
    .mx-nav {
        border-bottom: 1px solid ButtonText;
        background-color: Canvas;
    }

    .mx-btn--primary {
        forced-color-adjust: none;
        background-color: Highlight;
        color: HighlightText;
        border-color: Highlight;
    }

    .mx-btn--secondary,
    .mx-btn--ghost {
        forced-color-adjust: none;
        background-color: Canvas;
        color: ButtonText;
        border-color: ButtonText;
    }

    .mx-nav__link,
    .mx-mobile-nav__link {
        color: LinkText;
    }

    .mx-nav__link:hover,
    .mx-nav__link.is-active,
    .mx-mobile-nav__link:hover,
    .mx-mobile-nav__link.is-active {
        color: ActiveText;
    }

    .mx-skip-link {
        forced-color-adjust: none;
        background-color: Highlight;
        color: HighlightText;
    }

    .mx-lang-switcher__item.is-active {
        forced-color-adjust: none;
        background-color: Highlight;
        color: HighlightText;
    }

    .mx-mobile-nav__close {
        color: ButtonText;
        border-color: ButtonText;
    }
}