/* =========================================================
   Skip Link (A11Y)
   ========================================================= */
.skip-link {
    position: absolute;
    top: -100px;
    left: 0;
    background: var(--bd-color-primary);
    color: var(--bd-color-white);
    padding: 0.75rem 1.25rem;
    z-index: 9999;
    text-decoration: none;
    font-weight: 600;
    border-radius: 0 0 var(--bd-radius-md) 0;
    transition: top 0.2s ease;
}

.skip-link:focus-visible {
    top: 0;
}


/* ---------------------------------------------------------
   Header Wrapper – Default (Mobile first, NOT sticky)
--------------------------------------------------------- */
#main-header {
    position: relative;
    top: auto;
    z-index: var(--bd-z-sticky);
    border-bottom: 1px solid var(--bd-color-border);
    background: var(--bd-bg-page);
    transition: background 200ms ease, box-shadow 200ms ease;
}


/* ---------------------------------------------------------
   Header Inner Row
--------------------------------------------------------- */
#main-header > .bd-container {
    min-height: 80px;
    gap: var(--bd-space-3);
    max-width: var(--bd-container-wide);
    transition: min-height 200ms ease, padding 200ms ease;
}


/* ---------------------------------------------------------
   Logo
--------------------------------------------------------- */
.bd-logo {
    display: block;
    flex: none;
    line-height: 0;
}

.bd-logo img {
    display: block;
    width: auto;
    height: 48px;
    max-width: 100%;
}

.bd-logo img[src$=".svg"] {
    image-rendering: auto;
}


/* ---------------------------------------------------------
   Desktop Navigation
--------------------------------------------------------- */
.bd-nav {
    flex: 1 1 auto;
}

.bd-nav .topnav {
    list-style: none;
    display: flex;
    gap: var(--bd-space-4);
    margin: 0;
    padding: 0;
    justify-content: flex-end;
    align-items: center;
}

.bd-nav .topnav > li {
    margin: 0;
}

.bd-nav .topnav > li > a {
    font-size: var(--bd-fs-base);
    font-weight: 500;
    color: var(--bd-color-body);
    padding: 0.25em 0;
    position: relative;
}

.bd-nav .topnav > li > a:hover {
    color: var(--bd-color-primary);
}

.bd-nav .current-menu-item > a {
    color: var(--bd-color-primary);
}

.bd-nav .current-menu-item > a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -4px;
    height: 2px;
    background: var(--bd-color-primary);
}


/* ---------------------------------------------------------
   Mobile Menu Button
--------------------------------------------------------- */
.menu-bar {
    all: unset;
    cursor: pointer;
    width: 32px;
    height: 24px;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: calc(var(--bd-z-modal) + 1);
}

.menu-bar span,
.menu-bar::before,
.menu-bar::after {
    content: "";
    display: block;
    width: 100%;
    height: 2px;
    background: var(--bd-color-body);
    position: absolute;
    transition: var(--bd-transition-base);
}

.menu-bar::before {
    transform: translateY(-8px);
}

.menu-bar::after {
    transform: translateY(8px);
}

.menu-bar.active span {
    opacity: 0;
    transform: translateX(-10px);
}

.menu-bar.active::before {
    transform: translateY(0) rotate(45deg);
}

.menu-bar.active::after {
    transform: translateY(0) rotate(-45deg);
}


/* ---------------------------------------------------------
   Mobile Navigation Panel
--------------------------------------------------------- */
#mobile-nav-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    max-width: 420px;
    height: 100vh;
    background: var(--bd-bg-card);
    box-shadow: var(--bd-shadow-xl);
    transition: right var(--bd-transition-slow);
    z-index: var(--bd-z-modal);
    padding: 100px var(--bd-space-4) var(--bd-space-5);
    overflow-y: auto;
}


/* ---------------------------------------------------------
   Mobile Navigation List
--------------------------------------------------------- */
#mobile-nav-menu .topnav {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--bd-space-3);
}

#mobile-nav-menu .topnav li {
    margin: 0;
}

#mobile-nav-menu .topnav a {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--bd-color-darker);
    padding: 0.5em 0;
    display: block;
}

#mobile-nav-menu .topnav a:hover {
    color: var(--bd-color-primary);
}

#mobile-nav-menu .current-menu-item > a {
    color: var(--bd-color-primary);
}


/* ---------------------------------------------------------
   Submenu Toggle
--------------------------------------------------------- */
.sub-menu-toggle {
    margin-left: auto;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--bd-color-primary);
}


/* ---------------------------------------------------------
   Responsive Visibility
--------------------------------------------------------- */
@media (min-width: 1024px) {
    #mobile-nav-menu { display: none; }
    .bd-nav { display: block; }
    .menu-bar { display: none; }
}

@media (max-width: 1023px) {
    .bd-nav { display: none; }
    .menu-bar { display: flex; }
}


/* ---------------------------------------------------------
   Desktop Sticky Header + Scroll State
--------------------------------------------------------- */
@media (min-width: 1024px) {

    #main-header {
        position: sticky;
        top: 0;
        background: transparent;
    }

    #main-header.is-scrolled {
        background: var(--bd-color-tertiary);
        box-shadow: var(--bd-shadow-sm);
    }

    #main-header.is-scrolled > .bd-container {
        min-height: 64px;
    }

    body.admin-bar #main-header {
        top: 32px;
    }
}


/* ---------------------------------------------------------
   Admin Bar – Mobile neutralisieren
--------------------------------------------------------- */
@media (max-width: 1023px) {
    body.admin-bar #main-header {
        top: auto;
    }
}