/* ==========================================================
   HEADER
   ========================================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--header-height);
    background: var(--color-header-background);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(14px);
}

.navbar {
    height: var(--header-height);
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

/* Logo */
.navbar-brand {
    flex: 1;
    display: inline-flex;
    align-items: center;
}

.site-logo {
    height: 120px;
    width: auto;
    display: block;
    transition: transform var(--transition-fast);
}

.navbar-brand:hover .site-logo {
    transform: scale(1.02);
}

/* Menu */
.nav-menu {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 42px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.nav-menu a,
.nav-menu :is(.solutions-toggle, .company-toggle) {
    white-space: nowrap;
    position: relative;
    font-size: 16px;
    font-weight: 700;
    letter-spacing: .02em;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.nav-menu a::after,
.nav-menu :is(.solutions-toggle, .company-toggle)::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -9px;
    width: 0;
    height: 2px;
    border-radius: var(--radius-pill);
    background: var(--color-primary);
    transition: width var(--transition-fast);
}

.nav-menu a:hover,
.nav-menu a.active,
.nav-menu :is(.solutions-toggle, .company-toggle):hover,
.nav-menu :is(.solutions-toggle, .company-toggle)[aria-expanded="true"] {
    color: var(--color-primary);
}

.nav-menu a:hover::after,
.nav-menu a.active::after,
.nav-menu :is(.solutions-toggle, .company-toggle):hover::after,
.nav-menu :is(.solutions-toggle, .company-toggle)[aria-expanded="true"]::after {
    width: 100%;
}

/* Sous-menus AMBK Consulting et Solutions */
.site-header :is(.solutions-item, .company-item) {
    position: relative;
}

.site-header :is(.solutions-toggle, .company-toggle) {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.site-header :is(.solutions-toggle, .company-toggle)[aria-expanded="true"] > span {
    transform: rotate(180deg);
}

.site-header :is(.solutions-submenu, .company-submenu) {
    position: absolute;
    top: calc(100% + var(--spacing-lg));
    inset-inline-start: 50%;
    transform: translateX(-50%);
    width: min(360px, calc(100vw - 2 * var(--spacing-lg)));
    margin: 0;
    padding: var(--spacing-sm);
    list-style: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-background-elevated);
    box-shadow: var(--shadow-sm);
    z-index: 210;
}

.site-header :is(.solutions-submenu, .company-submenu)[hidden] {
    display: none;
}

.site-header :is(.solutions-submenu, .company-submenu) a {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    white-space: normal;
    text-align: left;
    font-size: 15px;
    line-height: 1.5;
    overflow-wrap: break-word;
}

.site-header :is(.solutions-submenu, .company-submenu) a::after {
    display: none;
}

.site-header :is(.solutions-submenu, .company-submenu) a:hover {
    background: var(--color-primary-soft);
    color: var(--color-primary);
}

.site-header :is(.solutions-toggle, .company-toggle):focus-visible,
.site-header :is(.solutions-submenu, .company-submenu) a:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
}

/* Action */
.navbar-action {
    margin-left: 0;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 30px;
    border-radius: var(--radius-pill);
    background: var(--gradient-primary);
    color: var(--color-text-inverted);
    font-size: 15px;
    font-weight: 750;
    box-shadow: var(--shadow-sm);
    transition:
            transform var(--transition-fast),
            box-shadow var(--transition-fast);
}

.navbar-action:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.theme-toggle {
    margin-left: auto;
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);
    background: var(--color-background-elevated);
    color: var(--color-text-primary);
    font-size: 18px;
    cursor: pointer;
    transition:
        background var(--transition-fast),
        border-color var(--transition-fast),
        transform var(--transition-fast);
}

.theme-toggle:hover {
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

.theme-toggle:hover {
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

/* ==========================================================
   MOBILE MENU BUTTON
   ========================================================== */

.mobile-menu-toggle {

    display: none;

    width: 44px;
    height: 44px;

    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);

    background: var(--color-background-elevated);

    color: var(--color-text-primary);

    font-size: 20px;

    cursor: pointer;

    transition:
        background var(--transition-fast),
        border-color var(--transition-fast),
        transform var(--transition-fast);
}

.mobile-menu-toggle:hover {

    border-color: var(--color-primary);

    transform: translateY(-1px);
}

.nav-menu-mobile-action {
    display: none;
}