/* Header */
.iwa-site-header {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 1rem 2rem 1.5rem;
}

.iwa-header-inner {
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 1.5rem;
    position: relative;
}

/* Menus */
.iwa-menu-list {
    display: flex;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.iwa-nav-left {
    justify-self: end;
}

.iwa-nav-right {
    justify-self: start;
    margin-right: 2rem;
}

.iwa-menu-list a {
    color: var(--color-white);
    text-decoration: none;
    padding: .5rem .5rem .25rem .5rem;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding-bottom: 4px;
    border-bottom: 2px solid transparent;
    transition: border-color 0.2s ease;
}

.iwa-menu-list a:hover,
.iwa-menu-list li.current-menu-item a {
    border-bottom-color: var(--color-white);
}

/* Logo centré */
.iwa-logo {
    justify-self: center;
}

.iwa-logo img {
    max-height: 40px;
    width: auto;
    display: block;
}

.iwa-logo a {
    display: block;
}

/* Switch langue */
ul.iwa-lang-switch {
    position: absolute;
    right: 1.5rem;
    top: .5rem;
    transform: translateY(-50%);
    display: flex;
    align-items: center;
    gap: .25rem;
    font-size: 1rem;
    font-weight: 600;
    list-style: none;
    text-transform: uppercase;
}

ul.iwa-mobile-lang-switch {
    display: flex;
    align-items: center;
    gap: .25rem;
    font-size: 1rem;
    font-weight: 600;
    list-style: none;
    text-transform: uppercase;
}

ul.iwa-lang-switch li.lang-item,
ul.iwa-mobile-lang-switch li.lang-item {
    color: var(--color-white);
    opacity: .8;
}

ul.iwa-lang-switch li.lang-item:not(:last-child)::after,
ul.iwa-mobile-lang-switch li.lang-item:not(:last-child)::after {
    display: inline;
    content: "/";
    margin-inline-start: .25rem;
}

ul.iwa-mobile-lang-switch li.lang-item a,
ul.iwa-lang-switch li.lang-item a {
    text-decoration: none;
}

ul.iwa-lang-switch li.lang-item.current-lang,
ul.iwa-mobile-lang-switch li.lang-item.current-lang {
    color: var(--color-white);
    opacity: 1;
}


/* Burger : caché par défaut (desktop) */
.iwa-burger {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    justify-self: end;
    width: 32px;
    height: 32px;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
}

.iwa-burger-bar {
    display: block;
    width: 24px;
    height: 2px;
    background-color: #fff;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

.iwa-burger[aria-expanded="true"] .iwa-burger-bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.iwa-burger[aria-expanded="true"] .iwa-burger-bar:nth-child(2) {
    opacity: 0;
}

.iwa-burger[aria-expanded="true"] .iwa-burger-bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* Mobile menu - Desktop */
.iwa-mobile-menu {
    display: none;
    padding: 0 2rem 1rem;
}

.iwa-mobile-menu.is-open {
    display: block;
}

body.iwa-menu-open {
    overflow: hidden;
}

.iwa-mobile-nav {
    display: flex;
    flex-direction: column;
}

.iwa-mobile-menu-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
}

.iwa-mobile-menu-list li {
    border-bottom: 1px solid var(--color-white)
}

.iwa-mobile-menu-list a {
    display: block;
    padding: 1rem 0;
    color: var(--color-white);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.iwa-mobile-menu-list li.current-menu-item a {
    color: rgba(255, 255, 255, 0.7);
}

/* Footer */
.iwa-site-footer {
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 1rem 2rem;
}

.iwa-footer-inner {
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: auto auto auto;
    align-items: center;
    gap: 1.5rem;
    position: relative;
}

.iwa-footer-left {
    display: flex;
    justify-content: flex-end;
}

.iwa-footer-left ul {
    list-style: none;
    padding-inline-start: 0;
}

.iwa-footer-left ul li a {
    text-decoration: none;
    font-size: 1rem;
}

.iwa-footer-right {
    display: flex;
    justify-content: flex-start;
    font-size: 1rem;
}

.iwa-footer-center {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.iwa-socials a {
    text-decoration: none;
    transition: filter 500ms ease;
}

.iwa-socials a:hover {
    filter: brightness(.8);
}

.iwa-socials a img {
    max-width: 32px;
}

.iwa-back-to-top {
    position: absolute;
    right: 6rem;
    top: -2rem;
    width: 60px;
    z-index: 1;
    transform-origin: center center;
    transform: rotate(-60deg) scale(1.0);
    transition: transform 500ms ease-in-out;
}

.iwa-back-to-top:hover {
    transform: rotate(-50deg) scale(1.1);
}

.iwa-back-to-top .iwa-back-to-top-link {
    border-radius: 20px;
    background-color: var(--color-primary-light);
    display: block;
    padding: 1rem;
    width: 100%;
    height: 100%;
}

.iwa-back-to-top .iwa-back-to-top-link img {
    max-width: 100%;
    transition: transform 500ms ease-in-out;
    transform: rotate(60deg) scale(1) translateX(0.1rem);
}

.iwa-back-to-top:hover .iwa-back-to-top-link img {
    transform: rotate(50deg) scale(0.92) translateX(-0.1rem);
}

/* Patterns background */
.iwa-pattern-bg {
    position: relative;
    z-index: 0;
}

.iwa-pattern-bg::before {
    z-index: -1;
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    display: block;
    width: 100%;
    height: 100%;
    background-color: var(--color-primary);
    background-image: url(../img/pattern.png);
    background-position-x: -30px;
    /* 75% of image size */
    background-size: 464px 582px;
}

/* Mobile */
@media (max-width: 900px) {
    .iwa-header-inner {
        grid-template-columns: auto 1fr auto;
        gap: .5rem;
        padding: 1rem 1.5rem;
    }

    .iwa-nav-left,
    .iwa-nav-right,
    ul.iwa-lang-switch {
        display: none;
    }

    .iwa-logo {
        justify-self: start;
        grid-column: 1;
    }

    .iwa-burger {
        display: flex;
        grid-column: 3;
    }

    .iwa-footer-inner {
        grid-template-columns: 1fr;
        margin-block-start: 3rem;
    }

    .iwa-footer-left,
    .iwa-footer-center,
    .iwa-footer-right {
        justify-content: flex-start;
        align-items: flex-start;
    }

    .iwa-header-inner {
        grid-template-columns: 1fr;
        justify-items: center;
        gap: 1.5rem;
    }


    .iwa-nav-left,
    .iwa-nav-right {
        justify-self: center;
    }

    .iwa-menu-list {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1.5rem;
    }
}