/* =========================================================================
   DZR Jubiläums-Timeline (mlp-style: alternating, carousel)
   v1.4
   Standalone-kompatibel: definiert alle Vars, die main.css nicht hat,
   und neutralisiert main.css-Button-Stile, die in unsere Komponente lecken.
   ========================================================================= */

/* Vars, die main.css nicht kennt */
:root {
    --gray-light:  #f5f5f5;
    --btn-mid-blue: #004b96;
}

/* ---------- Header-Block ---------- */
.jubilee__header {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    margin-bottom: 3rem;
}
@media (min-width: 992px) {
    .jubilee__header {
        grid-template-columns: 1.1fr 1fr;
        gap: 6.9444vw;
        margin-bottom: 5.5555vw;
        align-items: start;
    }
}

.jubilee__ribbon {
    display: inline-block;
    background-color: var(--secondary);
    color: var(--primary);
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    padding: 0.4rem 0.9rem;
    margin-bottom: 1.25rem;
    font-size: 0.8rem;
}
@media (min-width: 992px) {
    .jubilee__ribbon {
        font-size: 0.7638vw;
        padding: 0.4166vw 0.8333vw;
        margin-bottom: 1.3888vw;
    }
}

.jubilee__headline {
    font-weight: 700;
    line-height: 1.1;
    margin: 0 0 1rem;
    color: var(--primary);
    font-size: 2rem;
}
.jubilee__subline {
    font-weight: 400;
    color: var(--btn-mid-blue);
    margin: 0;
    font-size: 1.25rem;
}
@media (min-width: 992px) {
    .jubilee__headline {
        font-size: 3.4722vw;
        margin-bottom: 1.3888vw;
    }
    .jubilee__subline {
        font-size: 1.6666vw;
    }
}

.jubilee__quote {
    border-left: 3px solid var(--secondary);
    padding-left: 1.25rem;
    color: var(--primary);
}
@media (min-width: 992px) {
    .jubilee__quote {
        border-left-width: 0.2083vw;
        padding-left: 1.6666vw;
    }
}
.jubilee__quote p {
    margin: 0 0 1rem;
    font-style: italic;
}
.jubilee__quote footer {
    font-style: normal;
    font-weight: 600;
    color: var(--btn-mid-blue);
    /* main.css "footer" element-Regel neutralisieren */
    border: none;
    padding: 0;
    line-height: inherit;
}

/* ---------- Timeline Wrapper ---------- */
.timeline {
    position: relative;
}

/* ---------- Track (innerhalb Container, mit Fade-Edges) ---------- */
.timeline__track {
    position: relative;
    isolation: isolate;   /* eigene Stacking-Context → Nav-Buttons (z-index:5) immer über Gradient (z-index:3) */
}

.timeline__viewport {
    position: relative;
    overflow: hidden;
    padding: 5rem 0;
    scroll-behavior: smooth;
}

/* Weißer Fade an beiden Enden, damit Items am Rand ausblenden */
.timeline__viewport::before,
.timeline__viewport::after {
    content: "";
    position: absolute;
    top: 0; bottom: 0;
    width: 5rem;
    z-index: 3;
    pointer-events: none;
}
.timeline__viewport::before {
    left: 0;
    background: linear-gradient(to right, var(--white) 25%, rgba(255,255,255,0));
}
.timeline__viewport::after {
    right: 0;
    background: linear-gradient(to left, var(--white) 25%, rgba(255,255,255,0));
}
@media (min-width: 992px) {
    .timeline__viewport::before,
    .timeline__viewport::after { width: 6vw; }
}

.timeline__list {
    position: relative;
    display: flex;
    flex-direction: row-reverse;        /* DOM = newest first → visual chronological L→R */
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0 4rem;
    min-width: max-content;
    transition: transform 0.5s cubic-bezier(0.22, 0.61, 0.36, 1);
    will-change: transform;
}
@media (min-width: 992px) {
    .timeline__list {
        padding: 0 6vw;
    }
}

/* die durchgehende türkise Linie */
.timeline__list::before {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    height: 2px;
    background: var(--secondary);
    transform: translateY(-50%);
    z-index: 0;
}

/* ---------- Items (alternating above/below) ---------- */
.timeline__item {
    flex: 0 0 auto;
    width: 9rem;
    position: relative;
    text-align: center;
    z-index: 1;
    height: 13rem;
    display: flex;
    align-items: center;
    justify-content: center;
}
@media (max-width: 575px) {
    .timeline__item {
        width: 6rem;
        height: 11rem;
    }
}
@media (min-width: 992px) {
    .timeline__item {
        width: 9.7222vw;
        height: 13.8888vw;
    }
}

/* Connector-Stub (vertikale Linie vom Marker zum Label) */
.timeline__item::before {
    content: "";
    position: absolute;
    left: 50%;
    width: 2px;
    background: var(--secondary);
    transform: translateX(-50%);
    z-index: 0;
}
.timeline__item:nth-child(odd)::before {
    bottom: 50%;
    height: 4rem;
}
.timeline__item:nth-child(even)::before {
    top: 50%;
    height: 4rem;
}
@media (min-width: 992px) {
    .timeline__item:nth-child(odd)::before,
    .timeline__item:nth-child(even)::before {
        height: 4.5vw;
    }
}

.timeline__tab {
    appearance: none;
    background: transparent;
    border: 0;
    padding: 0;
    margin: 0;
    width: 100%;
    height: 100%;
    color: var(--primary);
    cursor: pointer;
    position: relative;
    outline: none;
    font-family: inherit;
    display: block;
    text-align: left;
}
/* main.css "button::before/::after" Slide-Fill-Animation neutralisieren */
.timeline__tab::before,
.timeline__tab::after {
    content: none;
    display: none;
}
/* main.css ".btn>span, button>span { position: relative }" überschreibt sonst
   unsere absolut positionierten Span-Kinder → Marker/Label kollabieren ins
   normale Layout und rutschen eine halbe Item-Breite nach links. Mit höherer
   Spezifität (.timeline__tab > …) erzwingen. */
.timeline__tab > .timeline__label,
.timeline__tab > .timeline__marker {
    position: absolute;
}

/* Label: linksbündig an die Vertikallinie (50% des Items) gehängt */
.timeline__label {
    position: absolute;
    left: 50%;
    width: max-content;
    max-width: 9rem;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    padding-left: 0.5rem;
    transition: transform 0.25s ease;
}
@media (max-width: 575px) {
    .timeline__label {
        max-width: 7rem;
        padding-left: 0.35rem;
    }
}
@media (min-width: 992px) {
    .timeline__label {
        max-width: 9.7222vw;
        padding-left: 0.5555vw;
    }
}
.timeline__item:nth-child(odd) .timeline__label {
    bottom: calc(50% + 3.5rem);
}
.timeline__item:nth-child(even) .timeline__label {
    top: calc(50% + 3.5rem);
}
@media (min-width: 992px) {
    .timeline__item:nth-child(odd) .timeline__label {
        bottom: calc(50% + 4vw);
    }
    .timeline__item:nth-child(even) .timeline__label {
        top: calc(50% + 4vw);
    }
}

.timeline__year {
    font-weight: 700;
    font-size: 1.1rem;
    line-height: 1;
    color: var(--primary);
    text-align: left;
    transition: color 0.25s ease;
}
@media (min-width: 992px) {
    .timeline__year {
        font-size: 1.25vw;
    }
}

.timeline__title {
    font-weight: 600;
    font-size: 0.85rem;
    line-height: 1.25;
    color: var(--primary);
    text-align: left;
    transition: color 0.25s ease;
}
@media (min-width: 992px) {
    .timeline__title {
        font-size: 0.9722vw;
    }
}

/* Marker — sitzt zentriert auf der Linie via absolute */
.timeline__marker {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 1.1rem;
    height: 1.1rem;
    border-radius: 50%;
    background: var(--white);
    border: 3px solid var(--secondary);
    box-shadow: 0 0 0 6px var(--white);
    transition: transform 0.25s ease, background-color 0.25s ease,
                border-color 0.25s ease, box-shadow 0.25s ease;
    z-index: 2;
}
@media (min-width: 992px) {
    .timeline__marker {
        width: 1.1111vw;
        height: 1.1111vw;
    }
}

/* Hover */
.timeline__tab:hover .timeline__marker {
    transform: translate(-50%, -50%) scale(1.25);
    background: var(--secondary);
}
.timeline__tab:hover .timeline__year {
    color: var(--btn-mid-blue);
}

/* Focus (Tastatur) — Outline auf .timeline__label (Jahr + Titel-Text).
   outline: none auf dem Button selbst verhindert den großen Browser-Standard-Rahmen
   und den sehr dünnen Rahmen aus main.css (:focus-visible { outline-width: .069vw }).
   .timeline__label ist ein <span> — main.css hat keine span-spezifischen Focus-Regeln,
   kein Konflikt möglich. */
.timeline__tab:focus-visible {
    outline: none;
}
.timeline__tab:focus-visible .timeline__label {
    outline: 3px solid #00bee6 !important;
    outline-offset: 3px;
    border-radius: 2px;
}

/* Aktiver Tab — TÜRKIS gefüllt */
.timeline__tab[aria-selected="true"] .timeline__marker {
    transform: translate(-50%, -50%) scale(1.6);
    background: var(--secondary);
    border-color: var(--secondary);
    box-shadow: 0 0 0 6px var(--white), 0 0 0 9px rgba(0, 190, 230, 0.25);
}
.timeline__tab[aria-selected="true"] .timeline__year,
.timeline__tab[aria-selected="true"] .timeline__title {
    color: var(--secondary);
}

/* ---------- Nav Buttons (Carousel) ---------- */
.timeline__nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 5;
    width: 2.75rem;
    height: 2.75rem;
    border-radius: 50%;
    border: 0;
    padding: 0;           /* main.css mobile "button { padding }" überschreiben */
    background: var(--white);
    box-shadow: 0 4px 14px rgba(0, 42, 100, 0.18);
    color: var(--primary);
    display: grid;
    place-items: center;
    cursor: pointer;
    overflow: hidden;     /* Pseudo-Elemente von main.css einschließen */
    transition: background 0.25s ease, color 0.25s ease, opacity 0.25s ease;
}
/* main.css "button::before/::after" Slide-Fill-Animation neutralisieren */
.timeline__nav::before,
.timeline__nav::after {
    content: none;
    display: none;
}
@media (min-width: 992px) {
    .timeline__nav {
        width: 3.0555vw;
        height: 3.0555vw;
    }
}
.timeline__nav:hover {
    background: var(--secondary);
    color: var(--primary);
}
.timeline__nav:focus-visible {
    outline: 3px solid #00bee6 !important;
    outline-offset: 2px;
}
.timeline__nav[disabled] {
    opacity: 0.35;
    cursor: not-allowed;
}
.timeline__nav--prev { left: -1rem; }
.timeline__nav--next { right: -1rem; }
@media (min-width: 992px) {
    .timeline__nav--prev { left: -1.5vw; }
    .timeline__nav--next { right: -1.5vw; }
}
.timeline__nav svg {
    width: 1rem;
    height: 1rem;
    fill: currentColor;
}

/* ---------- Detail-Panel ---------- */
.timeline__panels {
    margin-top: 2.5rem;
    min-height: 6rem;
}
@media (min-width: 992px) {
    .timeline__panels {
        margin-top: 3.4722vw;
    }
}

.timeline__hint {
    text-align: center;
    color: var(--btn-mid-blue);
    font-style: italic;
    padding: 2rem 1rem;
    border: 1px dashed var(--secondary);
    background: rgba(0, 190, 230, 0.04);
}

.timeline__panel {
    display: none;
    background: var(--gray-light);
    border-left: 4px solid var(--secondary);
    padding: 2rem 1.75rem;
    color: var(--primary);
}

[data-timeline-live-panel] .timeline__panel-year,
[data-timeline-live-panel] .timeline__panel-content {
    transition: opacity 0.15s ease;
}
.timeline__panel.is-active {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1rem;
}
@media (min-width: 992px) {
    .timeline__panel {
        padding: 3.4722vw 4.1666vw;
        border-left-width: 0.2777vw;
    }
    .timeline__panel.is-active {
        grid-template-columns: 12rem 1fr;
        column-gap: 4rem;
        align-items: start;
    }
}


.timeline__panel-year {
    font-weight: 700;
    font-size: 2.5rem;
    line-height: 1;
    color: var(--secondary);
    margin: 0;
}
@media (min-width: 992px) {
    .timeline__panel-year {
        font-size: 4.1666vw;
    }
}

.timeline__panel-content {
    min-width: 0;
}

.timeline__panel-title {
    font-weight: 700;
    font-size: 1.5rem;
    line-height: 1.25;
    margin: 0 0 1rem;
    color: var(--primary);
}
@media (min-width: 992px) {
    .timeline__panel-title {
        font-size: 1.9444vw;
        margin-bottom: 1.3888vw;
    }
}

.timeline__panel-body {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--primary);
}
@media (min-width: 992px) {
    .timeline__panel-body {
        font-size: 1.1111vw;
    }
}
.timeline__panel-body p:last-child { margin-bottom: 0; }

/* ---------- Reduced Motion ---------- */
@media (prefers-reduced-motion: reduce) {
    .timeline__list { transition: none !important; }
    .timeline__tab *,
    .timeline__panel,
    .timeline__panel *,
    .timeline__nav,
    .timeline__marker { transition: none !important; animation: none !important; }
}

.timeline {
    button > span {
        position: initial;
    }
    button:focus-visible  {
        outline: none !important;
        outline-offset: initial;
    }
    .timeline__nav.timeline__nav--prev, .timeline__nav.timeline__nav--next {
        z-index: 4;
    }
    .timeline__nav.timeline__nav--prev:focus-visible, .timeline__nav.timeline__nav--next:focus-visible {
        outline: 3px solid #00bee6 !important;
        outline-offset: 2px;
    }

}