/* =========================================
   NAVIGATION
   ========================================= */
/* Änderungsprotokoll: 2026-10-30 | parent-agent | @skill-change-provenance, @skill-css-rules, @skill-briefing-first | Public Hamburger nur Mobile/iPad (1023px); Secure immer Hamburger */

/* 011-ui-widget-navigation 009: Mobile Header padding 20px */
/* .base-nav-container | Änderungsprotokoll: 2026-10-03 | agent-router | @skill-change-provenance, @skill-css-rules | Padding fuer 80px Querformat-Logo wie Live /warum */
.base-nav-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 10px 2rem;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    width: 100%;
    box-sizing: border-box;
    gap: 1rem;
    border-bottom: none;
}

@media (max-width: 575px) {
    .base-nav-container {
        padding-left: 20px;
        padding-right: 20px;
    }
}


.base-nav-links {
    grid-column: 2;
    justify-self: center;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.25rem 1.75rem;
}

.base-nav-links .base-nav-link {
    font-size: var(--font-size-sm);
}

.base-nav-links-open {
    grid-column: 2;
    justify-self: center;
    display: flex;
    gap: 2.5rem;
}

.base-nav-link-auth {
    display: none;
}

.base-nav-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text);
}

/* .base-nav-timetable-cta | Änderungsprotokoll: 2026-10-03 | parent-agent | @skill-change-provenance, @skill-css-rules | Desktop ausgeblendet; Timetable bereits in #header-nav */
.base-nav-timetable-cta {
    display: none;
}

.base-nav-right-group {
    grid-column: 3;
    justify-self: end;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.base-nav-links-mobile {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    padding: 2rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
}

.base-nav-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* #baseNavActions .base-button-primary-lg | Änderungsprotokoll: 2026-10-30 | parent-agent | @skill-css-rules, @skill-change-provenance | Header-Tickets-Button Höhe = Flaggen 24px */
#baseNavActions .base-button-primary-lg {
    box-sizing: border-box;
    height: 24px;
    min-height: 24px;
    padding: 0 0.75rem;
    font-size: var(--font-size-sm);
    line-height: 1;
    border-radius: 0.35rem;
}

.base-nav-actions-center {
    display: flex;
    gap: 1rem;
    align-items: center;
    justify-content: center;
}

.base-nav-menu-icon {
    display: block;
    width: 24px;
    height: 24px;
}

/*
 * Hamburger-Layout (KEEP IN SYNC Public-Media + Secure):
 * - Public: nur Mobile/iPad max-width 1023px
 * - Secure: immer (alle Viewports)
 */

/* Public: Hamburger nur Mobile/iPad | Änderungsprotokoll: 2026-10-30 | parent-agent | @skill-change-provenance, @skill-css-rules | briefing/navigation.md 002.001.000 */
@media (max-width: 1023px) {
    .base-nav-mode-public.base-layout-main-container:has(.base-nav-links-open) {
        overflow: visible;
    }

    .base-nav-mode-public .base-layout-header {
        position: relative;
        z-index: 10001;
    }

    .base-nav-mode-public .base-layout-header:has(.base-nav-links-open) {
        overflow: visible;
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        background-color: var(--color-hamburger-overlay-bg);
    }

    .base-nav-mode-public .base-nav-container {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        align-items: center;
        position: relative;
    }

    .base-nav-mode-public .base-nav-logo {
        justify-self: auto;
        position: relative;
        z-index: 10002;
        flex: 1 1 auto;
        min-width: 0;
    }

    .base-nav-mode-public .base-nav-right-group {
        position: relative;
        z-index: 10002;
        grid-column: unset;
        justify-self: unset;
        flex: 0 0 auto;
        gap: 0.65rem;
    }

    .base-nav-mode-public .base-nav-timetable-cta {
        display: inline-flex;
        position: relative;
        z-index: 10003;
        align-items: center;
        justify-content: center;
        flex-shrink: 0;
        box-sizing: border-box;
        height: 2.125rem;
        padding: 0 0.9rem;
        border-radius: 0.45rem;
        font-size: var(--font-size-sm);
        font-weight: var(--font-weight-semibold);
        line-height: 1;
        white-space: nowrap;
        text-decoration: none;
        background-color: var(--color-primary-button);
        color: var(--color-primary-button-text);
        box-shadow: var(--shadow-sm);
    }

    .base-nav-mode-public .base-nav-timetable-cta:hover {
        background-color: var(--color-primary-button-hover);
        color: var(--color-primary-button-text);
    }

    .base-nav-mode-public .base-nav-menu-toggle {
        position: relative;
        z-index: 10003;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        box-sizing: border-box;
        width: 2.125rem;
        height: 2.125rem;
        padding: 0;
    }

    /* .base-nav-mode-public .base-nav-links-open | Änderungsprotokoll: 2026-10-30 | parent-agent | @skill-change-provenance, @skill-css-rules | Hamburger flex-wrap nowrap: Flaggen unter Nav-Links, keine zweite Spalte */
    .base-nav-mode-public .base-nav-links,
    .base-nav-mode-public .base-nav-links-open {
        grid-column: unset;
        justify-self: unset;
        flex-direction: column;
        flex-wrap: nowrap;
        align-items: stretch;
        position: fixed;
        inset: 0;
        width: 100%;
        max-width: 100vw;
        height: 100dvh;
        max-height: 100dvh;
        box-sizing: border-box;
        background-color: var(--color-hamburger-overlay-bg);
        background-image: none;
        padding: calc(8.75rem + env(safe-area-inset-top, 0px)) max(24px, env(safe-area-inset-right, 0px)) calc(2.5rem + env(safe-area-inset-bottom, 0px)) max(24px, env(safe-area-inset-left, 0px));
        overflow-y: auto;
        overflow-x: hidden;
        overscroll-behavior: contain;
        -webkit-overflow-scrolling: touch;
        z-index: 10000;
        gap: 0.55rem;
        border-bottom: none;
        box-shadow: none;
    }

    .base-nav-mode-public .base-nav-links {
        display: none;
    }

    .base-nav-mode-public .base-nav-links-open {
        display: flex;
    }

    /* #language-switcher-mobile | Änderungsprotokoll: 2026-10-30 | parent-agent | @skill-change-provenance, @skill-css-rules | Flaggen-Block unter Public-Nav volle Breite */
    .base-nav-mode-public .base-nav-links-open #language-switcher-mobile {
        margin-top: 1.75rem;
        padding-top: 1.5rem;
        border-top: 1px solid rgba(92, 225, 230, 0.22);
        flex-shrink: 0;
        width: 100%;
        gap: 0.85rem;
        align-items: center;
    }

    .base-nav-mode-public .base-nav-link-auth {
        display: flex;
    }

    .base-nav-mode-public .base-nav-link,
    .base-nav-mode-public .base-nav-link-auth {
        display: flex;
        align-items: center;
        flex-shrink: 0;
        width: min(100%, 28rem);
        max-width: 100%;
        align-self: flex-start;
        box-sizing: border-box;
        margin: 0;
        padding: 1rem 1.15rem 1rem 1.05rem;
        border-radius: 0;
        border-left: 3px solid transparent;
        background:
            linear-gradient(145deg, rgba(0, 229, 255, 0.04), transparent 55%),
            linear-gradient(120deg, rgba(7, 7, 13, 0.55), rgba(7, 7, 13, 0.18));
        color: var(--color-text);
        font-size: clamp(1.35rem, 4.2vw, 1.85rem);
        font-weight: var(--font-weight-extrabold);
        letter-spacing: -0.035em;
        line-height: 1.15;
        white-space: normal;
        word-break: break-word;
        transition:
            color 0.22s cubic-bezier(0.4, 0, 0.2, 1),
            background-color 0.22s cubic-bezier(0.4, 0, 0.2, 1),
            border-color 0.22s cubic-bezier(0.4, 0, 0.2, 1),
            transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
    }

    .base-nav-mode-public .base-nav-link:hover,
    .base-nav-mode-public .base-nav-link:focus-visible,
    .base-nav-mode-public .base-nav-link-auth:hover,
    .base-nav-mode-public .base-nav-link-auth:focus-visible,
    .base-nav-mode-public .base-nav-link-active {
        color: var(--color-home-cyan);
        border-left-color: var(--color-home-cyan);
        background:
            linear-gradient(90deg, rgba(92, 225, 230, 0.12), transparent 72%),
            linear-gradient(120deg, rgba(7, 7, 13, 0.72), rgba(7, 7, 13, 0.28));
        transform: translateX(2px);
    }

    .base-nav-mode-public .base-nav-link::after,
    .base-nav-mode-public .base-nav-link-auth::after {
        display: none;
    }

    .base-nav-mode-public .base-nav-actions {
        display: none;
    }

    body.base-nav-menu-body-open:has(.base-nav-mode-public) {
        overflow: hidden;
    }
}

/* Secure: Hamburger immer | Änderungsprotokoll: 2026-10-30 | parent-agent | @skill-change-provenance, @skill-css-rules | briefing/navigation.md 002.001.000 */
.base-nav-mode-secure.base-layout-main-container:has(.base-nav-links-open) {
    overflow: visible;
}

.base-nav-mode-secure .base-layout-header {
    position: relative;
    z-index: 10001;
}

.base-nav-mode-secure .base-layout-header:has(.base-nav-links-open) {
    overflow: visible;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    background-color: var(--color-hamburger-overlay-bg);
}

.base-nav-mode-secure .base-nav-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.base-nav-mode-secure .base-nav-logo {
    justify-self: auto;
    position: relative;
    z-index: 10002;
    flex: 1 1 auto;
    min-width: 0;
}

.base-nav-mode-secure .base-nav-right-group {
    position: relative;
    z-index: 10002;
    grid-column: unset;
    justify-self: unset;
    flex: 0 0 auto;
    gap: 0.65rem;
}

.base-nav-mode-secure .base-nav-timetable-cta {
    display: inline-flex;
    position: relative;
    z-index: 10003;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-sizing: border-box;
    height: 2.125rem;
    padding: 0 0.9rem;
    border-radius: 0.45rem;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    line-height: 1;
    white-space: nowrap;
    text-decoration: none;
    background-color: var(--color-primary-button);
    color: var(--color-primary-button-text);
    box-shadow: var(--shadow-sm);
}

.base-nav-mode-secure .base-nav-timetable-cta:hover {
    background-color: var(--color-primary-button-hover);
    color: var(--color-primary-button-text);
}

.base-nav-mode-secure .base-nav-menu-toggle {
    position: relative;
    z-index: 10003;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    width: 2.125rem;
    height: 2.125rem;
    padding: 0;
}

/* .base-nav-mode-secure .base-nav-links-open | Änderungsprotokoll: 2026-10-30 | parent-agent | @skill-change-provenance, @skill-css-rules | Hamburger flex-wrap nowrap: Flaggen unter Admin-Nav, keine zweite Spalte */
.base-nav-mode-secure .base-nav-links,
.base-nav-mode-secure .base-nav-links-open {
    grid-column: unset;
    justify-self: unset;
    flex-direction: column;
    flex-wrap: nowrap;
    align-items: stretch;
    position: fixed;
    inset: 0;
    width: 100%;
    max-width: 100vw;
    height: 100dvh;
    max-height: 100dvh;
    box-sizing: border-box;
    background-color: var(--color-hamburger-overlay-bg);
    background-image: none;
    padding: calc(8.75rem + env(safe-area-inset-top, 0px)) max(24px, env(safe-area-inset-right, 0px)) calc(2.5rem + env(safe-area-inset-bottom, 0px)) max(24px, env(safe-area-inset-left, 0px));
    overflow-y: auto;
    overflow-x: hidden;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    z-index: 10000;
    gap: 0.55rem;
    border-bottom: none;
    box-shadow: none;
}

.base-nav-mode-secure .base-nav-links {
    display: none;
}

.base-nav-mode-secure .base-nav-links-open {
    display: flex;
}

/* #language-switcher-mobile | Änderungsprotokoll: 2026-10-30 | parent-agent | @skill-change-provenance, @skill-css-rules | Flaggen unter Admin-Tabs (nach Rabatte); order+shrink gegen Zweitspalte */
.base-nav-mode-secure .base-nav-links-open #language-switcher-mobile {
    margin-top: 1.75rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(92, 225, 230, 0.22);
    flex-shrink: 0;
    flex-grow: 0;
    order: 999;
    width: 100%;
    max-width: 100%;
    align-self: stretch;
    gap: 0.85rem;
    align-items: center;
    justify-content: flex-start;
    box-sizing: border-box;
}

.base-nav-mode-secure .base-nav-link-auth {
    display: flex;
}

.base-nav-mode-secure .base-nav-link,
.base-nav-mode-secure .base-nav-link-auth {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    width: min(100%, 28rem);
    max-width: 100%;
    align-self: flex-start;
    box-sizing: border-box;
    margin: 0;
    padding: 1rem 1.15rem 1rem 1.05rem;
    border-radius: 0;
    border-left: 3px solid transparent;
    background:
        linear-gradient(145deg, rgba(0, 229, 255, 0.04), transparent 55%),
        linear-gradient(120deg, rgba(7, 7, 13, 0.55), rgba(7, 7, 13, 0.18));
    color: var(--color-text);
    font-size: clamp(1.35rem, 4.2vw, 1.85rem);
    font-weight: var(--font-weight-extrabold);
    letter-spacing: -0.035em;
    line-height: 1.15;
    white-space: normal;
    word-break: break-word;
    transition:
        color 0.22s cubic-bezier(0.4, 0, 0.2, 1),
        background-color 0.22s cubic-bezier(0.4, 0, 0.2, 1),
        border-color 0.22s cubic-bezier(0.4, 0, 0.2, 1),
        transform 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

.base-nav-mode-secure .base-nav-link:hover,
.base-nav-mode-secure .base-nav-link:focus-visible,
.base-nav-mode-secure .base-nav-link-auth:hover,
.base-nav-mode-secure .base-nav-link-auth:focus-visible,
.base-nav-mode-secure .base-nav-link-active {
    color: var(--color-home-cyan);
    border-left-color: var(--color-home-cyan);
    background:
        linear-gradient(90deg, rgba(92, 225, 230, 0.12), transparent 72%),
        linear-gradient(120deg, rgba(7, 7, 13, 0.72), rgba(7, 7, 13, 0.28));
    transform: translateX(2px);
}

.base-nav-mode-secure .base-nav-link::after,
.base-nav-mode-secure .base-nav-link-auth::after {
    display: none;
}

.base-nav-mode-secure .base-nav-actions {
    display: none;
}

body.base-nav-menu-body-open:has(.base-nav-mode-secure) {
    overflow: hidden;
}