/* ==========================================================================
   Layout — structure, header, footer, sections
   ========================================================================== */

/* ---- Conteneurs ---- */
.container {
    width: 100%;
    max-width: var(--container);
    margin-inline: auto;
    padding-inline: var(--gutter);
}
.container--wide { max-width: var(--container-wide); }
.container--text { max-width: var(--container-text); }

/* ---- Sections ---- */
.section { padding-block: var(--section-y); }
.section--tight { padding-block: calc(var(--section-y) * 0.6); }
.section--alt { background: var(--bg-2); }
.section--line { border-top: 1px solid var(--line); }

.section-head {
    max-width: 680px;
    margin-bottom: var(--space-7);
}
.section-head--center {
    margin-inline: auto;
    text-align: center;
}

/* Eyebrow : petit label or au-dessus des titres */
.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.6em;
    font-family: var(--font-sans);
    font-size: var(--fs-xs);
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: var(--space-4);
}
.eyebrow::before {
    content: "";
    width: 28px;
    height: 1px;
    background: var(--accent-line);
}
.section-head--center .eyebrow { justify-content: center; }
.section-head--center .eyebrow::before { display: none; }

.section-title { margin-bottom: var(--space-4); }
.section-lead {
    color: var(--text-muted);
    font-size: var(--fs-md);
    line-height: var(--lh-relaxed);
    max-width: 56ch;
}
.section-head--center .section-lead { margin-inline: auto; }

/* ---- Grilles utilitaires ---- */
.grid { display: grid; gap: var(--space-5); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-3 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
    position: fixed;
    inset-block-start: 0;
    inset-inline: 0;
    z-index: var(--z-header);
    height: var(--header-h);
    display: flex;
    align-items: center;
    transition: background var(--t), border-color var(--t), backdrop-filter var(--t);
    border-bottom: 1px solid transparent;
}
.site-header.is-scrolled {
    background: rgba(16, 13, 11, 0.82);
    backdrop-filter: saturate(140%) blur(14px);
    -webkit-backdrop-filter: saturate(140%) blur(14px);
    border-bottom-color: var(--line);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-5);
    width: 100%;
}

/* Logo */
.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-serif);
    font-size: 1.4rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    color: var(--text);
}
.brand__mark {
    width: 34px; height: 34px;
    display: grid; place-items: center;
    border: 1px solid var(--accent-line);
    border-radius: 10px;
    color: var(--accent);
    font-size: 1rem;
    background: var(--accent-glow);
}
.brand b { color: var(--accent); font-weight: 600; }

/* Navigation principale */
.main-nav { display: flex; align-items: center; gap: clamp(0.5rem, 2vw, 2rem); }
.main-nav__list { display: flex; align-items: center; gap: clamp(0.5rem, 1.5vw, 1.6rem); }
.main-nav__link {
    position: relative;
    font-size: var(--fs-sm);
    color: var(--text-muted);
    padding: 0.4rem 0;
    font-weight: 500;
}
.main-nav__link::after {
    content: "";
    position: absolute;
    inset-inline-start: 0;
    bottom: -2px;
    width: 100%;
    height: 1px;
    background: var(--accent);
    transform: scaleX(0);
    transform-origin: inline-start;
    transition: transform var(--t);
}
.main-nav__link:hover,
.main-nav__link.is-active { color: var(--text); }
.main-nav__link:hover::after,
.main-nav__link.is-active::after { transform: scaleX(1); }

.header-actions { display: flex; align-items: center; gap: var(--space-3); }

/* Sélecteur de langue */
.lang-switch { position: relative; }
.lang-switch__toggle {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--text-muted);
    padding: 0.45rem 0.7rem;
    border: 1px solid var(--line);
    border-radius: var(--radius-full);
    transition: border-color var(--t-fast), color var(--t-fast);
}
.lang-switch__toggle:hover { color: var(--text); border-color: var(--line-strong); }
.lang-switch__toggle svg { width: 14px; height: 14px; transition: transform var(--t); }
.lang-switch[aria-expanded="true"] .lang-switch__toggle svg { transform: rotate(180deg); }
.lang-switch__menu {
    position: absolute;
    inset-inline-end: 0;
    top: calc(100% + 8px);
    min-width: 140px;
    background: var(--surface);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 0.4rem;
    box-shadow: var(--shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity var(--t), transform var(--t), visibility var(--t);
}
.lang-switch[aria-expanded="true"] .lang-switch__menu {
    opacity: 1; visibility: visible; transform: translateY(0);
}
.lang-switch__item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.5rem 0.7rem;
    border-radius: var(--radius-sm);
    font-size: var(--fs-sm);
    color: var(--text-muted);
    transition: background var(--t-fast), color var(--t-fast);
}
.lang-switch__item:hover { background: var(--surface-2); color: var(--text); }
.lang-switch__item.is-active { color: var(--accent); }
.lang-switch__item span { font-size: var(--fs-xs); color: var(--text-faint); }

/* Bouton burger (mobile) */
.nav-toggle {
    display: none;
    width: 44px; height: 44px;
    align-items: center; justify-content: center;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    color: var(--text);
}
.nav-toggle span {
    position: relative;
    width: 20px; height: 1.5px;
    background: currentColor;
    transition: background var(--t-fast);
}
.nav-toggle span::before,
.nav-toggle span::after {
    content: "";
    position: absolute; left: 0;
    width: 20px; height: 1.5px;
    background: currentColor;
    transition: transform var(--t);
}
.nav-toggle span::before { top: -6px; }
.nav-toggle span::after  { top: 6px; }
body.menu-open .nav-toggle span { background: transparent; }
body.menu-open .nav-toggle span::before { transform: translateY(6px) rotate(45deg); }
body.menu-open .nav-toggle span::after  { transform: translateY(-6px) rotate(-45deg); }

/* ---- Mobile ---- */
@media (max-width: 940px) {
    .nav-toggle { display: inline-flex; }
    .main-nav {
        position: fixed;
        inset-block-start: 0;
        inset-inline-end: 0;
        height: 100dvh;
        width: min(380px, 86vw);
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        gap: 0;
        padding: calc(var(--header-h) + 1.5rem) var(--gutter) 2rem;
        background: var(--bg-2);
        border-inline-start: 1px solid var(--line);
        box-shadow: var(--shadow-lg);
        transform: translateX(100%);
        transition: transform var(--t-slow);
        overflow-y: auto;
    }
    html[dir="rtl"] .main-nav { transform: translateX(-100%); }
    body.menu-open .main-nav { transform: translateX(0); }
    .main-nav__list {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        width: 100%;
    }
    .main-nav__link {
        font-size: var(--fs-lg);
        font-family: var(--font-serif);
        padding: 0.9rem 0;
        border-bottom: 1px solid var(--line);
    }
    .main-nav__link::after { display: none; }
    .main-nav .btn { margin-top: var(--space-5); justify-content: center; }
    .nav-backdrop {
        position: fixed; inset: 0;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0; visibility: hidden;
        transition: opacity var(--t), visibility var(--t);
        z-index: calc(var(--z-menu) - 1);
    }
    body.menu-open .nav-backdrop { opacity: 1; visibility: visible; }
    .main-nav { z-index: var(--z-menu); }
}

@media (max-width: 940px) {
    .header-actions .lang-switch { display: none; }
    .main-nav .lang-switch-mobile { display: block; margin-top: var(--space-5); }
}
.lang-switch-mobile { display: none; }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    background: var(--bg-2);
    border-top: 1px solid var(--line);
    padding-block: var(--space-9) var(--space-6);
    margin-top: var(--space-8);
}
.footer-grid {
    display: grid;
    grid-template-columns: 1.6fr 1fr 1fr 1.2fr;
    gap: var(--space-7) var(--space-5);
}
@media (max-width: 900px) { .footer-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 540px) { .footer-grid { grid-template-columns: 1fr; } }

.footer-brand .brand { margin-bottom: var(--space-4); }
.footer-tagline {
    color: var(--text-muted);
    font-size: var(--fs-sm);
    line-height: var(--lh-relaxed);
    max-width: 34ch;
}
.footer-col h4 {
    font-family: var(--font-sans);
    font-size: var(--fs-xs);
    text-transform: uppercase;
    letter-spacing: 0.16em;
    color: var(--text-faint);
    margin-bottom: var(--space-4);
}
.footer-col ul { display: flex; flex-direction: column; gap: 0.7rem; }
.footer-col a {
    color: var(--text-muted);
    font-size: var(--fs-sm);
}
.footer-col a:hover { color: var(--accent); }

.footer-social { display: flex; gap: 0.6rem; margin-top: var(--space-2); }
.footer-social a {
    width: 40px; height: 40px;
    display: grid; place-items: center;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    transition: all var(--t-fast);
}
.footer-social a:hover {
    color: var(--accent);
    border-color: var(--accent-line);
    background: var(--accent-glow);
}
.footer-social svg { width: 18px; height: 18px; }

.footer-bottom {
    margin-top: var(--space-8);
    padding-top: var(--space-5);
    border-top: 1px solid var(--line);
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    align-items: center;
    justify-content: space-between;
    color: var(--text-faint);
    font-size: var(--fs-xs);
}
.footer-bottom a:hover { color: var(--accent); }

/* ---- Breadcrumb ---- */
.breadcrumb {
    padding-top: calc(var(--header-h) + var(--space-6));
}
.breadcrumb ol {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
    font-size: var(--fs-sm);
    color: var(--text-faint);
}
.breadcrumb li { display: inline-flex; align-items: center; gap: 0.5rem; }
.breadcrumb li:not(:last-child)::after {
    content: "/";
    color: var(--line-strong);
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb [aria-current] { color: var(--text); }