/* ==========================================================================
   RUB Sidebar Navigation – Fixed Left Sidebar
   Orientiert an brand.aalto.fi
   ========================================================================== */

/* ── Variablen ─────────────────────────────────────────────── */
/* Farben nutzen direkt die Astra CSS Custom Properties.
   Astra gibt diese automatisch per Inline-CSS im <head> aus,
   basierend auf der aktiven Palette im Customizer.
   → Werte ändern unter: Customizer > Global > Colors
*/
:root {
    --rub-sidebar-width: 280px;
    --rub-content-gutter: clamp(1rem, 1.5vw + 0.6rem, 2rem);
    --rub-sidebar-bg: #f5f5f5;                                /* Hellgrau */
    --rub-sidebar-border: #e5e5e5;
    --rub-sidebar-text: var(--ast-global-color-0, #003560);             /* Primary Color (Fallback: RUB Blau) */
    --rub-sidebar-text-light: var(--ast-global-color-0, #003560);       /* Primary Color (Fallback: RUB Blau) */
    --rub-sidebar-active: var(--ast-global-color-0, #003560);           /* Primary Color (Fallback: RUB Blau) */
    --rub-sidebar-hover-bg: var(--ast-global-color-4, #f3f5f7);     /* Subtle Background */
    --rub-sidebar-padding: 2rem;
    --rub-sidebar-transition: 0.3s ease;
}

/* ── Sidebar Container ─────────────────────────────────────── */
.rub-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--rub-sidebar-width);
    background: var(--rub-sidebar-bg);
    z-index: 900;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
}

.rub-sidebar__inner {
    padding: var(--rub-sidebar-padding);
    display: flex;
    flex-direction: column;
    min-height: 100%;
}

/* ── Layout: Content neben Sidebar verschieben ─────────────── */
.rub-has-sidebar #page {
    margin-left: var(--rub-sidebar-width);
}

.rub-has-sidebar .site-content,
.rub-has-sidebar .ast-container {
    max-width: 100%;
    width: 100%;
    margin-left: 0;
    margin-right: 0;
    box-sizing: border-box;
}

.rub-has-sidebar .site-content {
    padding-left: 0;
    padding-right: 0;
}

.rub-has-sidebar .site-content .ast-container,
.rub-has-sidebar .site-footer .ast-container,
.rub-has-sidebar .site-above-footer-wrap,
.rub-has-sidebar .site-primary-footer-wrap,
.rub-has-sidebar .site-below-footer-wrap {
    padding-left: var(--rub-content-gutter) !important;
    padding-right: var(--rub-content-gutter) !important;
    box-sizing: border-box;
}

.rub-has-sidebar .site-above-footer-wrap .ast-builder-grid-row-container-inner,
.rub-has-sidebar .site-primary-footer-wrap .ast-builder-grid-row-container-inner,
.rub-has-sidebar .site-below-footer-wrap .ast-builder-grid-row-container-inner,
.rub-has-sidebar .site-above-footer-wrap .ast-builder-footer-grid-columns,
.rub-has-sidebar .site-primary-footer-wrap .ast-builder-footer-grid-columns,
.rub-has-sidebar .site-below-footer-wrap .ast-builder-footer-grid-columns {
    padding-left: 0 !important;
    padding-right: 0 !important;
}

/* Astra Header/Footer auf Sidebar-Seiten ausblenden:
   Die Sidebar hat eigenes Logo und Navigation. */
.rub-has-sidebar .ast-primary-header-bar,
.rub-has-sidebar .ast-above-header-bar,
.rub-has-sidebar .ast-below-header-bar,
.rub-has-sidebar .ast-mobile-header-wrap,
.rub-has-sidebar .site-header {
    display: none;
}

/* ── Logo ──────────────────────────────────────────────────── */
.rub-sidebar__logo {
    padding-top: 1.5rem;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
}

.rub-sidebar__logo a {
    display: block;
    text-decoration: none;
}

.rub-sidebar__logo img,
.rub-sidebar__logo .custom-logo {
    display: block;
    max-width: 160px;
    height: auto;
}

.rub-sidebar__site-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--rub-sidebar-active);
    letter-spacing: -0.02em;
}

/* ── Sektions-Titel (Parent Page) ──────────────────────────── */
.rub-sidebar__section-title {
    margin-bottom: 1.25rem;
}

.rub-sidebar__section-link {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--rub-sidebar-text);
    text-decoration: none;
    letter-spacing: -0.01em;
    transition: color var(--rub-sidebar-transition);
}

.rub-sidebar__section-link:hover,
.rub-sidebar__section-link.is-active {
    color: var(--rub-sidebar-active);
}

/* ── Navigation Menu ───────────────────────────────────────── */
.rub-sidebar__nav {
    flex: 1;
}

.rub-sidebar__menu {
    list-style: none;
    margin: 0;
    padding: 0;
}

.rub-sidebar__menu > li,
.rub-sidebar__menu-item {
    margin: 0;
    border-bottom: none;
}

.rub-sidebar__menu > li > a,
.rub-sidebar__menu-link {
    display: block;
    padding: 0.5rem 0.75rem;
    margin: 0 -0.75rem;
    font-size: 0.9375rem;
    color: var(--rub-sidebar-text-light);
    text-decoration: none;
    border-radius: 6px;
    transition: color var(--rub-sidebar-transition),
                background-color var(--rub-sidebar-transition);
    line-height: 1.5;
}

.rub-sidebar__menu > li > a:hover,
.rub-sidebar__menu-link:hover {
    color: var(--rub-sidebar-text);
    background-color: var(--rub-sidebar-hover-bg);
}

.rub-sidebar__menu > li.current-menu-item > a,
.rub-sidebar__menu > li.current-menu-ancestor > a,
.rub-sidebar__menu > li.current-page-ancestor > a,
.rub-sidebar__menu > li.current_page_item > a,
.rub-sidebar__menu-item.is-active > .rub-sidebar__menu-link {
    color: var(--rub-sidebar-active);
    font-weight: 600;
}

/* ── Submenu (3. Ebene) ────────────────────────────────────── */
.rub-sidebar__submenu,
.rub-sidebar__menu .sub-menu {
    list-style: none;
    margin: 0;
    padding: 0 0 0.5rem 1rem;
    border-left: 2px solid var(--rub-sidebar-border);
    display: none;
}

.rub-sidebar__menu .sub-menu > li,
.rub-sidebar__submenu-item {
    margin: 0;
}

.rub-sidebar__menu .sub-menu > li > a,
.rub-sidebar__submenu-link {
    display: block;
    padding: 0.35rem 0.75rem;
    margin: 0 -0.75rem;
    font-size: 0.875rem;
    color: var(--rub-sidebar-text-light);
    text-decoration: none;
    border-radius: 6px;
    transition: color var(--rub-sidebar-transition),
                background-color var(--rub-sidebar-transition);
    line-height: 1.4;
}

.rub-sidebar__menu .sub-menu > li > a:hover,
.rub-sidebar__submenu-link:hover {
    color: var(--rub-sidebar-text);
    background-color: var(--rub-sidebar-hover-bg);
}

.rub-sidebar__menu .sub-menu > li.current-menu-item > a,
.rub-sidebar__menu .sub-menu > li.current-menu-ancestor > a,
.rub-sidebar__menu .sub-menu > li.current-page-ancestor > a,
.rub-sidebar__menu .sub-menu > li.current_page_item > a,
.rub-sidebar__submenu-item.is-active > .rub-sidebar__submenu-link {
    color: var(--rub-sidebar-active);
    font-weight: 600;
}

.rub-sidebar__menu .sub-menu .sub-menu {
    padding-left: 0.75rem;
}

.rub-sidebar__menu .sub-menu .sub-menu > li > a {
    font-size: 0.8125rem;
    padding-top: 0.25rem;
    padding-bottom: 0.25rem;
}

/* 2. und 3. Ebene nur auf aktivem Navigationspfad anzeigen */
.rub-sidebar__menu > li.current-menu-item > .sub-menu,
.rub-sidebar__menu > li.current-menu-parent > .sub-menu,
.rub-sidebar__menu > li.current-menu-ancestor > .sub-menu,
.rub-sidebar__menu > li.current_page_parent > .sub-menu,
.rub-sidebar__menu > li.current-page-ancestor > .sub-menu,
.rub-sidebar__menu > li.current_page_item > .sub-menu,
.rub-sidebar__submenu-item.is-active > .rub-sidebar__submenu,
.rub-sidebar__menu-item.is-active > .rub-sidebar__submenu {
    display: block;
}

.rub-sidebar__menu .sub-menu > li.current-menu-item > .sub-menu,
.rub-sidebar__menu .sub-menu > li.current-menu-parent > .sub-menu,
.rub-sidebar__menu .sub-menu > li.current-menu-ancestor > .sub-menu,
.rub-sidebar__menu .sub-menu > li.current_page_parent > .sub-menu,
.rub-sidebar__menu .sub-menu > li.current-page-ancestor > .sub-menu,
.rub-sidebar__menu .sub-menu > li.current_page_item > .sub-menu,
.rub-sidebar__submenu-item.is-active > .rub-sidebar__submenu {
    display: block;
}

/* ── Sprachwechsler ─────────────────────────────────────────── */
.rub-sidebar__language {
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 2px solid var(--rub-sidebar-border);
}

.rub-sidebar__language-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 0.5rem;
}

.rub-sidebar__language-item {
    margin: 0;
}

.rub-sidebar__language-link {
    display: inline-block;
    padding: 0.25rem 0.55rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    text-decoration: none;
    color: var(--rub-sidebar-text-light);
    border: 1px solid var(--rub-sidebar-border);
    transition: color var(--rub-sidebar-transition),
                background-color var(--rub-sidebar-transition),
                border-color var(--rub-sidebar-transition);
}

.rub-sidebar__language-link:hover,
.rub-sidebar__language-link:focus-visible {
    color: var(--rub-sidebar-text);
    background-color: var(--rub-sidebar-hover-bg);
    border-color: var(--rub-sidebar-hover-bg);
}

.rub-sidebar__language-link.is-active {
    color: var(--rub-sidebar-active);
    background-color: transparent;
    border-width: 2px;
    border-color: var(--rub-sidebar-active);
}

.rub-sidebar__language-link.is-missing {
    opacity: 0.4;
    cursor: default;
    pointer-events: none;
}

/* ── Mobile Header Bar ──────────────────────────────────────── */
.rub-mobile-header {
    display: none;                   /* Desktop: versteckt */
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 56px;
    background: var(--rub-sidebar-bg);
    border-bottom: 1px solid var(--rub-sidebar-border);
    align-items: center;
    justify-content: space-between;
    padding: 0 1rem;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.06);
}

.rub-mobile-header__logo {
    display: flex;
    align-items: center;
    min-width: 0;                    /* Flex-Shrink erlauben */
    overflow: hidden;
}

.rub-mobile-header__logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.rub-mobile-header__logo img,
.rub-mobile-header__logo .custom-logo {
    display: block;
    max-height: 36px;
    width: auto;
    max-width: 160px;
    object-fit: contain;
}

/* Hamburger Button */
.rub-mobile-header__toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

.rub-mobile-header__toggle-icon,
.rub-mobile-header__toggle-icon::before,
.rub-mobile-header__toggle-icon::after {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--rub-sidebar-text);
    transition: transform var(--rub-sidebar-transition),
                opacity var(--rub-sidebar-transition);
}

.rub-mobile-header__toggle-icon {
    position: relative;
}

.rub-mobile-header__toggle-icon::before,
.rub-mobile-header__toggle-icon::after {
    content: '';
    position: absolute;
    left: 0;
}

.rub-mobile-header__toggle-icon::before {
    top: -7px;
}

.rub-mobile-header__toggle-icon::after {
    top: 7px;
}

/* Hamburger → X Animation */
.rub-mobile-header__toggle[aria-expanded="true"] .rub-mobile-header__toggle-icon {
    background: transparent;
}

.rub-mobile-header__toggle[aria-expanded="true"] .rub-mobile-header__toggle-icon::before {
    top: 0;
    transform: rotate(45deg);
}

.rub-mobile-header__toggle[aria-expanded="true"] .rub-mobile-header__toggle-icon::after {
    top: 0;
    transform: rotate(-45deg);
}

/* ── Responsive / Mobile ───────────────────────────────────── */
@media (max-width: 921px) {
    .rub-mobile-header {
        display: flex;
    }

    /* Sidebar Logo auf mobil ausblenden */
    .rub-sidebar__logo {
        display: none;
    }

    .rub-sidebar {
        top: 56px;                   /* Unter dem Mobile Header */
        transform: translateX(-100%);
        transition: transform var(--rub-sidebar-transition);
        box-shadow: none;
    }

    .rub-sidebar.is-open {
        transform: translateX(0);
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.15);
    }

    .rub-has-sidebar .site-content,
    .rub-has-sidebar #page,
    .rub-has-sidebar .ast-container,
    .rub-has-sidebar .ast-primary-header-bar,
    .rub-has-sidebar .ast-mobile-header-wrap {
        margin-left: 0;
    }

    /* Doppelte Abstände vermeiden + Hintergrund korrigieren */
    .rub-has-sidebar #page {
        padding-top: 56px;
        background: #fff;
    }

    .rub-has-sidebar .site-content {
        padding-top: 0;
        padding-left: 0;
        padding-right: 0;
    }

    /* Website-Hintergrund weiß */
    body.rub-has-sidebar {
        background: #fff;
    }

    /* Overlay hinter der Sidebar */
    .rub-sidebar-overlay {
        display: none;
        position: fixed;
        top: 56px;                   /* Unter dem Mobile Header */
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.4);
        z-index: 899;
    }

    .rub-sidebar-overlay.is-visible {
        display: block;
    }
}

/* ── Scrollbar Styling ─────────────────────────────────────── */
.rub-sidebar::-webkit-scrollbar {
    width: 4px;
}

.rub-sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.rub-sidebar::-webkit-scrollbar-thumb {
    background: var(--rub-sidebar-border);
    border-radius: 2px;
}

.rub-sidebar::-webkit-scrollbar-thumb:hover {
    background: #ccc;
}
