/* ==========================================================
   Navbar - Structure
   1) Custom Property Registration
   2) Global Tokens (:root)
   3) Core Navbar Layout
   4) State Modifiers
   5) Interactions
   6) Responsive
   ========================================================== */

/* ==========================================================
   Custom Property Registration
   ========================================================== */
@property --navbar-text-color {
    syntax: '<color>';
    inherits: true;
    initial-value: #f7f7f7;
}

/* ==========================================================
   Global Tokens (:root)
   ========================================================== */
:root {
    /* Colors */
    --navbar-bg-frost-light: color-mix(in srgb, var(--bg-light) 80%, transparent);
    --navbar-bg-frost-dark-soft: color-mix(in srgb, var(--bg-dark) 72%, transparent);
    --navbar-bg-frost-dark-strong: color-mix(in srgb, var(--bg-dark) 80%, transparent);
    --navbar-divider-dark-soft: color-mix(in srgb, var(--bg-dark) 14%, transparent);
    --navbar-works-focus-start-offset: 100px;
    --navbar-works-anchor-hold-distance: 150px;

    /* Typography */
    --navbar-font-brand: 37px;
    --navbar-font-link: 24px;
    --navbar-font-locale: 16px;
    --navbar-font-weight-brand: 700;
    --navbar-font-weight-link: 600;
    --navbar-font-weight-locale: 500;

    /* Layout */
    --navbar-menu-gap: 30px;
    --navbar-locale-theme-gap: 20px;
    --navbar-expand-offset: 44px;

    /* Motion */
    --navbar-transition-duration: 320ms;
    --navbar-transition-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ==========================================================
   Core Navbar Layout
   ========================================================== */
.site-navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 40;
    --navbar-text-color: var(--text-on-dark);
    --navbar-works-focus-strength: 0%;
    color: var(--navbar-text-color);
    background-color: transparent;
    transition: background-color var(--navbar-transition-duration) var(--navbar-transition-ease), backdrop-filter var(--navbar-transition-duration) var(--navbar-transition-ease), --navbar-text-color var(--navbar-transition-duration) var(--navbar-transition-ease);
}

/* ==========================================================
   State Modifiers
   ========================================================== */
.site-navbar.is-no-transition,
.site-navbar.is-no-transition .site-navbar-shell {
    transition: none !important;
}

.site-navbar.is-dark-zone {
    left: 50%;
    right: auto;
    width: calc(100dvw - (2 * var(--dark-block-margin)));
    transform: translateX(-50%);
}

.site-navbar.is-solid {
    --navbar-text-color: var(--text-on-light);
    background-color: var(--navbar-bg-frost-light);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.site-navbar.is-frosted:not(.is-solid) {
    background-color: var(--navbar-bg-frost-dark-soft);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.site-navbar.is-frosted.is-dark-zone:not(.is-solid) {
    --navbar-text-color: var(--text-on-dark);
    background-color: var(--navbar-bg-frost-dark-strong);
}

.site-navbar.is-solid.is-dark-zone {
    --navbar-text-color: var(--text-on-dark);
    background-color: var(--navbar-bg-frost-dark-strong);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.site-navbar.is-works-focus:not(.is-dark-zone) {
    --navbar-text-color: var(--text-on-light);
    background-color: color-mix(
        in srgb,
        var(--navbar-bg-frost-light) calc(100% - var(--navbar-works-focus-strength, 0%)),
        var(--bg-light) var(--navbar-works-focus-strength, 0%)
    );
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

/* Arrivee sur ancre via clic nav: fond plein, sans blur, retire au prochain scroll utilisateur */
.site-navbar.is-arrived {
    --navbar-text-color: var(--text-on-light);
    background-color: var(--bg-light) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

.site-navbar.is-arrived.is-dark-zone {
    --navbar-text-color: var(--text-on-dark);
    background-color: var(--bg-dark) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

.site-navbar.is-works-anchor:not(.is-dark-zone) {
    --navbar-text-color: var(--text-on-light);
    background-color: var(--bg-light) !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

/* Fin de video: texte en couleur normale, fond transparent */
body:has(#hero.is-finished) .site-navbar:not(.is-solid) {
    --navbar-text-color: var(--text-on-light);
}

body:has(#hero.is-finished) .site-navbar.is-frosted:not(.is-solid):not(.is-dark-zone) {
    background-color: var(--navbar-bg-frost-light);
}

.site-navbar-shell {
    width: min(100%, var(--page-max-width));
    margin: 0 auto;
    min-height: 92px;
    padding-inline: var(--page-gutter);
    padding-block-start: var(--navbar-expand-offset);
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: padding-block-start 450ms ease-out;
}

.site-navbar.is-solid .site-navbar-shell,
.site-navbar.is-compact .site-navbar-shell {
    padding-block-start: 0;
}

.site-navbar-brand {
    color: inherit;
    text-decoration: none;
    font-size: var(--navbar-font-brand);
    font-weight: var(--navbar-font-weight-brand);
    line-height: 1;
    letter-spacing: -0.04em;
}

.site-navbar-menu {
    display: flex;
    align-items: center;
    gap: var(--navbar-menu-gap);
}

.site-navbar-locale + .site-navbar-theme {
    margin-left: calc(var(--navbar-locale-theme-gap) - var(--navbar-menu-gap));
}

.site-navbar-link,
.site-navbar-locale,
.site-navbar-theme {
    color: inherit;
    transition: color 150ms ease-out, opacity 150ms ease-out;
    text-decoration: none;
    font-family: inherit;
    background: transparent;
    border: 0;
    padding: 0;
    cursor: pointer;
}

.site-navbar-link:link,
.site-navbar-link:visited,
.site-navbar-brand:link,
.site-navbar-brand:visited {
    color: inherit;
}

.site-navbar-link {
    font-size: var(--navbar-font-link);
    font-weight: var(--navbar-font-weight-link);
    line-height: 1;
    letter-spacing: -0.02em;
}

.site-navbar-locale {
    font-size: var(--navbar-font-locale);
    font-weight: var(--navbar-font-weight-locale);
    color: var(--text-grey);
    opacity: 1;
}

.site-navbar-theme {
    font-size: var(--navbar-font-locale);
    width: 1em;
    height: 1em;
    opacity: 0.75;
}

.site-navbar-theme img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
    filter: invert(1);
    transition: filter var(--navbar-transition-duration) var(--navbar-transition-ease);
}

.site-navbar.is-solid .site-navbar-theme img {
    filter: none;
}

body:has(#hero.is-finished) .site-navbar.is-frosted:not(.is-solid):not(.is-dark-zone) .site-navbar-theme img {
    filter: none;
}

.site-navbar.is-solid.is-dark-zone .site-navbar-theme img,
.site-navbar.is-arrived.is-dark-zone .site-navbar-theme img {
    filter: invert(1);
}

/* ==========================================================
   Interactions
   ========================================================== */
.site-navbar-link:hover {
    color: var(--text-grey);
    opacity: 1;
}

.site-navbar-locale:hover {
    color: var(--navbar-text-color);
    opacity: 1;
}

.site-navbar-theme:hover {
    opacity: 0.5;
}

/* Hamburger hidden by default (desktop) */
.site-navbar-hamburger,
.site-navbar-mobile-menu {
    display: none;
}

/* ==========================================================
   Responsive
   ========================================================== */
@media (max-width: 1024px) {
    :root {
        /* Tablet overrides */
        --navbar-font-brand: 34px;
        --navbar-font-link: 19px;
        --navbar-menu-gap: 20px;
        --navbar-locale-theme-gap: 7px;
    }

    .site-navbar-shell {
        min-height: 76px;
    }
}

@media (max-width: 640px) {
    :root {
        /* Mobile overrides */
        --navbar-font-link: 14px;
        --navbar-font-locale: 13px;
        --navbar-menu-gap: 14px;
        --navbar-locale-theme-gap: 6px;
    }

    .site-navbar-shell {
        min-height: 68px;
    }

    /* Masquer le menu desktop sur mobile */
    .site-navbar-menu {
        display: none;
    }

    /* Montrer le hamburger sur mobile */
    .site-navbar-hamburger {
        display: flex;
        flex-direction: column;
        gap: 5px;
        width: 24px;
        height: 24px;
        padding: 0;
        cursor: pointer;
        background: transparent;
        border: none;
        color: inherit;
        opacity: 0.75;
        transition: opacity 150ms ease-out;
    }

    .site-navbar-hamburger:hover {
        opacity: 0.72;
    }

    .hamburger-line {
        width: 100%;
        height: 3px;
        background-color: currentColor;
        border-radius: 1px;
        transition: all 300ms ease-out;
    }

    /* Mobile: annuler la transformation geometrique de is-dark-zone et garder les styles visuels */
    .site-navbar.is-dark-zone {
        left: auto;
        right: auto;
        width: auto;
        transform: none;
    }

    /* Menu mobile : overlay qui glisse depuis la droite */
    .site-navbar-mobile-menu {
        position: fixed !important;
        top: 0;
        right: 0;
        width: 100%;
        height: 100dvh;
        background-color: var(--bg-light);
        color: var(--text-on-light);
        z-index: 999;
        display: flex;
        flex-direction: column;
        transform: translateX(100%) !important;
        transition: transform 300ms ease-out;
        overflow-y: auto;
    }

    .site-navbar-mobile-menu.is-open {
        transform: translateX(0) !important;
        overscroll-behavior: contain;
    }

    /* Eviter que is-dark-zone perturbe le menu mobile */
    .site-navbar.is-dark-zone .site-navbar-mobile-menu {
        transform: translateX(100%) !important;
    }

    .site-navbar.is-dark-zone .site-navbar-mobile-menu.is-open {
        transform: translateX(0) !important;
    }

    /* En-tete du menu mobile: logo + bouton X */
    .site-navbar-mobile-header {
        display: flex;
        align-items: center;
        justify-content: flex-start;
        padding: 0 var(--page-gutter);
        min-height: 68px;
        position: relative;
    }

    .site-navbar-mobile-brand {
        color: inherit;
        text-decoration: none;
        font-size: var(--navbar-font-brand);
        font-weight: var(--navbar-font-weight-brand);
        line-height: 1;
        letter-spacing: -0.04em;
        position: absolute;
        left: var(--page-gutter);
        top: 50%;
        transform: translateY(-50%);
    }

    .site-navbar-mobile-close {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        background: transparent;
        border: none;
        padding: 0;
        cursor: pointer;
        color: inherit;
        position: absolute;
        right: calc(var(--page-gutter) - 8px);
        top: 50%;
        transform: translateY(-50%);
    }

    .site-navbar-mobile-close svg {
        width: 32px;
        height: 32px;
    }

    /* Contenu central du menu */
    .site-navbar-mobile-content {
        flex: 1;
        padding: 48px var(--page-gutter) 32px;
        display: flex;
        flex-direction: column;
        gap: 28px;
        align-items: flex-start;
        text-align: left;
    }

    .site-navbar-mobile-link {
        color: inherit;
        text-decoration: none;
        font-size: 56px;
        font-weight: 700;
        line-height: 1.1;
        letter-spacing: -0.02em;
        background: transparent;
        border: none;
        padding: 0;
        cursor: pointer;
        transition: opacity 150ms ease-out;
        transform: translateY(30px);
    }

    .site-navbar-mobile-link:hover {
        opacity: 0.72;
    }

    /* Section langue */
    .site-navbar-mobile-language {
        margin-top: 0;
        padding: 0;
        display: flex;
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        justify-content: center;
        text-align: left;
    }

    .site-navbar-mobile-locale {
        font-size: 34px;
        font-family: "Poppins", sans-serif;
        font-weight: 300;
        line-height: 1.4;
        letter-spacing: 0.01em;
        text-transform: uppercase;
        opacity: 0.68;
        color: inherit;
        background: transparent;
        border: none;
        padding: 0;
        transform: translateY(30px);
        cursor: pointer;
        transition: opacity 150ms ease-out;
    }

    .site-navbar-mobile-locale:hover {
        opacity: 0.72;
    }

    /* Section CTA en bas avec fond noir */
    .site-navbar-mobile-cta {
        background-color: var(--bg-light);
        position: relative;
        padding: 40px var(--page-gutter) 48px;
        display: flex;
        flex-direction: column;
        gap: 24px;
        color: var(--text-on-light);
        align-items: center;
        text-align: center;
    }

    .site-navbar-mobile-cta::before {
        content: "";
        position: absolute;
        top: 0;
        left: var(--page-gutter);
        right: var(--page-gutter);
        height: 1px;
        background-color: var(--navbar-divider-dark-soft);
    }
    .site-navbar-mobile-cta-text {
        font-size: 18px;
        line-height: 1.5;
        color: var(--text-grey);
        margin: 0;
    }

    .site-navbar-mobile-cta-button {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: fit-content;
        max-width: 100%;
        background-color: var(--bg-dark);
        color: var(--text-on-dark);
        text-decoration: none;
        font-size: clamp(1rem, 5vw, 20px);
        font-weight: 700;
        letter-spacing: 0.05em;
        text-transform: uppercase;
        white-space: nowrap;
        padding: 16px clamp(18px, 6vw, 40px);
        border-radius: 32px;
        border: none;
        cursor: pointer;
        transition: background-color 150ms ease-out;
    }
    .site-navbar-mobile-linkedin {
        display: inline-flex;
        align-items: center;
        gap: 8px;
        color: var(--text-on-light);
        text-decoration: none;
        font-size: 14px;
        line-height: 1;
        transition: opacity 150ms ease-out;
    }

    .site-navbar-mobile-linkedin:hover {
        opacity: 0.72;
    }

    .site-navbar-mobile-linkedin svg {
        width: 16px;
        height: 16px;
        display: block;
        flex-shrink: 0;
    }
}

@media (hover: hover) and (pointer: fine) {
    .site-navbar-hamburger {
        display: none;
    }

    .site-navbar-mobile-menu {
        display: none;
    }

    .site-navbar-menu {
        display: flex;
    }
}

/* Force mobile nav on small screens, regardless of hover/pointer capabilities */
@media (max-width: 640px) {
    .site-navbar-menu {
        display: none !important;
    }

    .site-navbar-shell > .site-navbar-menu {
        display: none !important;
    }

    .site-navbar-hamburger {
        display: flex !important;
    }

    .site-navbar-shell > .site-navbar-hamburger {
        display: flex !important;
    }

    .site-navbar-mobile-menu {
        display: flex !important;
    }
}