.main-nav { align-items: center; }
.nav-dropdown { position: relative; }
.nav-dropdown summary {
    display: flex; align-items: center; gap: 8px;
    cursor: pointer; list-style: none; color: inherit;
    font: inherit; padding: 10px 0;
}
.nav-dropdown summary::-webkit-details-marker { display: none; }
.nav-dropdown summary::after {
    content: ''; width: 7px; height: 7px; border-right: 2px solid currentColor;
    border-bottom: 2px solid currentColor; transform: rotate(45deg); margin-top: -4px;
}
.nav-dropdown[open] summary::after { transform: rotate(225deg); margin-top: 4px; }
.nav-dropdown summary:hover { color: var(--cyan); }
.main-nav a:focus-visible, .nav-dropdown summary:focus-visible { outline: 3px solid var(--cyan); outline-offset: 4px; }
@media (max-width: 860px) {
    .main-nav { align-items: stretch; max-height: calc(100dvh - 100px); overflow-y: auto; }
    .nav-dropdown summary { padding: 0; justify-content: space-between; }
}


.site-header .main-nav { font-size: 14px; line-height: 1.4; letter-spacing: 0; gap: 8px; }
.site-header .main-nav > a,
.site-header .main-nav > .nav-with-preview > a,
.site-header .nav-dropdown > summary {
    padding: 10px 12px; border-radius: 6px; font-weight: 600; text-decoration: none;
}
.site-header .main-nav > a:hover,
.site-header .main-nav > .nav-with-preview > a:hover,
.site-header .nav-dropdown > summary:hover,
.site-header .nav-dropdown[open] > summary,
.site-header .nav-with-preview.preview-open > a { background: #edf6f8; color: #0b506a; }
.site-header .menu-toggle { width: 44px; height: 44px; padding: 8px; position: relative; border-radius: 6px; }
.site-header .menu-toggle:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
.site-header .menu-toggle span { position: absolute; left: 10px; width: 24px; height: 2px; margin: 0; transition: transform .18s, opacity .18s; }
.site-header .menu-toggle span:nth-child(1) { top: 14px; }
.site-header .menu-toggle span:nth-child(2) { top: 21px; }
.site-header .menu-toggle span:nth-child(3) { top: 28px; }
.site-header .menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-header .menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.site-header .menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }
@media (max-width: 860px) {
    .site-header .main-nav, .site-header .main-nav.open {
        position: absolute; top: calc(100% + 8px); right: 12px; left: auto;
        width: min(360px, calc(100vw - 24px)); padding: 12px;
        max-height: calc(100vh - 110px); max-height: calc(100dvh - 110px);
        overflow-y: auto; overscroll-behavior: contain; align-items: stretch;
        gap: 4px; text-align: left; text-transform: none; background: #fff;
        border: 1px solid #d3e1e7; border-radius: 8px; box-shadow: 0 12px 32px #17344026;
    }
    .site-header .main-nav > a,
    .site-header .main-nav > .nav-with-preview > a,
    .site-header .nav-dropdown > summary {
        display: flex; align-items: center; min-height: 44px; padding: 10px 12px; font-size: 16px;
    }
    .site-header .nav-dropdown > summary { justify-content: space-between; }
}
@media (prefers-reduced-motion: reduce) {
    .site-header .menu-toggle span { transition: none; }
}


/* ---------- Apercus du menu ---------- */

.nav-with-preview { position: relative; display: flex; align-items: center; }
.has-js .main-nav > .nav-with-preview > a { padding-right: 6px; }

.nav-preview-toggle, .nav-preview-close { display: none; }
.has-js .nav-preview-toggle { display: inline-grid; }
.has-js .nav-preview-close { display: grid; }

.nav-preview-toggle {
    place-items: center; width: 30px; height: 34px; flex: 0 0 auto;
    padding: 0; border: 0; border-radius: 6px; background: none;
    color: inherit; cursor: pointer;
}
.nav-preview-toggle span {
    width: 6px; height: 6px;
    border-right: 2px solid currentColor; border-bottom: 2px solid currentColor;
    transform: translateY(-2px) rotate(45deg); transition: transform .18s;
}
.nav-preview-toggle[aria-expanded="true"] span { transform: translateY(2px) rotate(225deg); }
.nav-preview-toggle:hover { background: #edf6f8; color: #0b506a; }
.nav-preview-toggle:focus-visible { outline: 3px solid var(--cyan); outline-offset: 2px; }

.nav-preview {
    position: absolute; top: calc(100% + 10px); left: 0;
    width: min(var(--preview-width, 360px), calc(100vw - 32px));
    z-index: 1100; overflow: hidden;
    background: #fff; color: #21333c;
    border: 1px solid #d1dfe5; border-radius: 8px;
    box-shadow: 0 14px 34px #17344026;
    text-align: left; text-transform: none; font-size: 14px;
}
.nav-preview[hidden] { display: none; }
.nav-dropdown .nav-preview { display: none; }
.nav-dropdown[open] .nav-preview { display: block; }
.nav-preview-realisations, .nav-preview-contact { left: auto; right: 0; }
.nav-preview-outils { --preview-width: 380px; }
.nav-preview-realisations { --preview-width: 420px; }
.nav-preview-contact { --preview-width: 300px; }

.nav-preview-heading {
    display: flex; justify-content: space-between; align-items: center;
    gap: 12px; padding: 10px 8px 6px 16px;
    color: #526b77; font-size: 12px; font-weight: 700;
    text-transform: uppercase; letter-spacing: .04em;
}
.nav-preview-close {
    place-items: center; width: 32px; height: 32px; flex: 0 0 auto;
    padding: 0; border: 0; border-radius: 6px; background: none;
    color: #526b77; font-size: 20px; line-height: 1; cursor: pointer;
}
.nav-preview-close:hover { background: #edf6f8; color: #0b506a; }
.nav-preview-close:focus-visible { outline: 3px solid var(--cyan); outline-offset: 2px; }

.nav-preview strong { display: block; font-size: 14px; font-weight: 700; line-height: 1.35; color: #203f4c; }
.nav-preview small { display: block; margin-top: 3px; color: #526b77; font-size: 12.5px; line-height: 1.45; font-weight: 400; }
.nav-preview-arrow {
    width: 7px; height: 7px; flex: 0 0 auto; align-self: center;
    border-right: 2px solid currentColor; border-bottom: 2px solid currentColor;
    transform: rotate(-45deg); color: #8fa7b2; transition: transform .16s, color .16s;
}
.nav-preview a:focus-visible { outline: 3px solid #0b506a; outline-offset: -3px; background: #edf6f8; }
.nav-preview a:focus-visible .nav-preview-arrow { color: #0b506a; }

.nav-preview-tools { padding: 0 8px 8px; }
.nav-preview-tool {
    display: grid; grid-template-columns: 72px minmax(0, 1fr) 12px;
    align-items: center; gap: 12px; padding: 8px; border-radius: 6px;
}
.nav-preview-tool img { width: 72px; height: 45px; object-fit: cover; border-radius: 4px; border: 1px solid #dce4e7; }
.nav-preview-tool:hover { background: #edf6f8; }
.nav-preview-tool:hover .nav-preview-arrow, .nav-preview-tool:focus-visible .nav-preview-arrow { color: #0b506a; transform: rotate(-45deg) translate(2px, 2px); }

.nav-preview-projects { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 14px; padding: 4px 16px 16px; }
.nav-preview-project { min-width: 0; }
.nav-preview-project img { width: 100%; height: auto; aspect-ratio: 16 / 10; object-fit: cover; border: 1px solid #dce4e7; border-radius: 6px; }
.nav-preview-project small { margin-top: 8px; }
.nav-preview-project strong { display: flex; justify-content: space-between; gap: 8px; margin-top: 2px; }
.nav-preview-project strong > span:first-child { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.nav-preview-project strong .nav-preview-arrow { align-self: flex-start; margin-top: 4px; }
.nav-preview-project:hover img { border-color: #8dabb6; }
.nav-preview-project:hover strong { color: #0b506a; }
.nav-preview-project:hover .nav-preview-arrow { color: #0b506a; }

.nav-preview-contact-body { display: flex; flex-direction: column; align-items: flex-start; gap: 6px; padding: 4px 16px 16px; }
.nav-preview-contact-body > strong { font-size: 16px; }
.nav-preview-contact-body p { margin: 0; color: #526b77; font-size: 12.5px; line-height: 1.5; }
.nav-preview-phone { margin-top: 6px; color: #0b506a; font-size: 17px; font-weight: 800; }
.nav-preview-email { color: #006d88; font-size: 13px; overflow-wrap: anywhere; max-width: 100%; }
.main-nav .nav-preview-phone:hover { color: #0b506a; }
.main-nav .nav-preview-email:hover { color: #006d88; }
.nav-preview-phone:hover, .nav-preview-email:hover { text-decoration: underline; }

.nav-preview-footer {
    display: flex; align-items: center; justify-content: space-between; gap: 16px;
    min-height: 46px; padding: 12px 16px; border-top: 1px solid #e0e8eb;
    background: #f6f9fa; color: #006d88; font-size: 13px; font-weight: 700;
}
.main-nav .nav-preview-footer:hover { background: #edf6f8; color: #006d88; }
.nav-preview-footer .nav-preview-arrow { color: currentColor; }

@media (max-width: 860px) {
    .nav-with-preview { flex-wrap: wrap; }
    .site-header .main-nav > .nav-with-preview > a,
    .site-header .main-nav > .nav-with-preview > summary { flex: 1; }
    .nav-preview {
        position: static; flex: 1 0 100%; width: 100%; margin: 2px 0 8px;
        border-width: 0 0 0 2px; border-left-color: #d1dfe5;
        border-radius: 0; box-shadow: none;
    }
    .nav-preview-heading { padding: 6px 0 4px 10px; }
    .nav-preview-tools { padding: 0 0 4px 4px; }
    .nav-preview-tool { grid-template-columns: 56px minmax(0, 1fr) 12px; gap: 10px; padding: 8px 6px; min-height: 44px; }
    .nav-preview-tool img { width: 56px; height: 35px; }
    .nav-preview-projects { gap: 10px; padding: 0 10px 10px; }
    .nav-preview-contact-body { padding: 0 10px 10px; }
    .nav-preview-footer { min-height: 44px; padding: 10px; border-top: 0; background: none; }
    .nav-preview-phone, .nav-preview-email { display: flex; align-items: center; min-height: 44px; }
    .site-header:has(.main-nav.open) { z-index: 10000; }
}
@media (hover: none), (pointer: coarse) {
    .nav-preview-toggle, .nav-preview-close { width: 44px; height: 44px; }
}
@media (prefers-reduced-motion: reduce) {
    .nav-preview-toggle span, .nav-preview-arrow { transition: none; }
}