/* ==========================================================================
   Cabinet Dentaire Gloria — Header sticky
   --------------------------------------------------------------------------
   Composant : header transparent au repos, fond navy + backdrop-blur au scroll.
   Cibles : >= 1024px (desktop nav inline) / < 1024px (burger + drawer mobile).
   Source de verite : docs/superpowers/specs/2026-05-03-cabinetgloria-design.md
   ========================================================================== */

/* ---------- Base ---------- */
.site-header {
    position: sticky;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    /* Par defaut : fond navy plein (toutes pages sauf home avec hero photo) */
    background: rgba(30, 58, 95, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 2px 12px rgba(15, 30, 51, 0.18);
    transition: background var(--tx-fast), backdrop-filter var(--tx-fast), box-shadow var(--tx-fast);
}

/* Sur la home : header transparent au repos, navy au scroll */
body.page-home .site-header:not(.is-scrolled) {
    background: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    box-shadow: none;
}

.site-header.is-scrolled {
    background: rgba(30, 58, 95, 0.95);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    box-shadow: 0 2px 12px rgba(15, 30, 51, 0.18);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    gap: var(--sp-5);
}

/* ---------- Logo ---------- */
.site-header__logo {
    display: inline-flex;
    align-items: center;
    flex-shrink: 0;
    line-height: 0;
    text-decoration: none;
}

.site-header__logo img {
    height: 48px;
    width: auto;
    display: block;
}

/* ---------- Nav desktop ---------- */
.site-nav__list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--sp-6);
}

.site-nav__list a {
    color: var(--color-white);
    font-weight: 500;
    font-size: 0.9375rem;
    text-decoration: none;
    transition: color var(--tx-fast);
    padding: var(--sp-2) 0;
    display: inline-block;
}

.site-nav__list a:hover,
.site-nav__list a:focus-visible {
    color: var(--color-gold);
    outline: none;
}

.site-nav__list a:focus-visible {
    text-decoration: underline;
    text-underline-offset: 4px;
}

/* ---------- Right cluster ---------- */
.site-header__right {
    display: flex;
    align-items: center;
    gap: var(--sp-4);
    flex-shrink: 0;
}

/* ---------- Lang switcher ---------- */
.lang-switcher {
    color: var(--color-white);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: 8px 12px;
    border-radius: var(--r-sm);
    font-size: 0.8125rem;
    font-weight: 600;
    text-decoration: none;
    line-height: 1;
    transition: border-color var(--tx-fast), color var(--tx-fast), background var(--tx-fast);
}

.lang-switcher:hover,
.lang-switcher:focus-visible {
    border-color: var(--color-gold);
    color: var(--color-gold);
    outline: none;
}

/* ---------- CTA header (override default btn 56px → 48px) ---------- */
.site-header__cta {
    height: 48px;
    padding: 0 var(--sp-5);
    font-size: 0.9375rem;
}

/* ---------- Burger ---------- */
.site-header__burger {
    display: none;
    width: 40px;
    height: 40px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.site-header__burger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    border-radius: 2px;
    transition: transform var(--tx-fast), opacity var(--tx-fast);
}

.site-header__burger[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.site-header__burger[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.site-header__burger[aria-expanded="true"] span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

.site-header__burger:focus-visible {
    outline: 2px solid var(--color-gold);
    outline-offset: 2px;
    border-radius: var(--r-sm);
}

/* ---------- Mobile nav (drawer) ---------- */
.mobile-nav {
    position: fixed;
    inset: 80px 0 0 0;
    background: var(--color-navy-deep);
    padding: var(--sp-7);
    z-index: 99;
    overflow-y: auto;
}

.mobile-nav[hidden] {
    display: none;
}

.mobile-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--sp-4);
}

.mobile-nav a {
    color: var(--color-white);
    font-size: 1.125rem;
    font-weight: 500;
    text-decoration: none;
    padding: var(--sp-3) 0;
    display: block;
    transition: color var(--tx-fast);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.mobile-nav a:hover,
.mobile-nav a:focus-visible {
    color: var(--color-gold);
    outline: none;
}

.mobile-nav .btn {
    border-bottom: none;
    margin-top: var(--sp-3);
}

.mobile-nav__lang a {
    color: var(--color-gold);
    font-weight: 600;
    border-bottom: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 1023px) {
    .site-nav,
    .site-header__cta {
        display: none;
    }
    .site-header__burger {
        display: flex;
    }
    /* Quand le drawer mobile est ouvert, fond solide pour eviter transparence sur photo */
    .site-header:has(.site-header__burger[aria-expanded="true"]) {
        background: var(--color-navy-deep);
    }
}

@media (min-width: 1024px) {
    .mobile-nav {
        display: none !important;
    }
}

/* ---------- Skip link override (header context) ---------- */
.site-header .skip-link {
    position: absolute;
    top: -40px;
    left: var(--sp-4);
    background: var(--color-gold);
    color: var(--color-navy-deep);
    padding: var(--sp-2) var(--sp-4);
    border-radius: var(--r-sm);
    text-decoration: none;
    font-weight: 600;
    z-index: 101;
    transition: top var(--tx-fast);
}

.site-header .skip-link:focus {
    top: var(--sp-2);
    outline: 2px solid var(--color-navy);
    outline-offset: 2px;
}