/**
 * Block: Akkordeon
 *
 * Native <details>/<summary>. Plus-Icon (×/+) wechselt per CSS,
 * keine JS-Abhängigkeit. Alle Items unabhängig auf-/zuklappbar.
 */

.block--accordion {
    position: relative;
}

.block--accordion.block--pad-none   { padding-block: 0; }
.block--accordion.block--pad-normal { padding-block: var(--space-12); }
.block--accordion.block--pad-lg     { padding-block: var(--space-16); }

.block--accordion.block--bg-beige       { background-color: var(--color-beige); }
.block--accordion.block--bg-dunkelbeige { background-color: var(--color-bg-alt); }
.block--accordion.block--bg-white       { background-color: var(--color-white); }
.block--accordion.block--bg-navy {
    background-color: var(--color-bg-premium);
    color: var(--color-text-on-navy);
}
.block--accordion.block--bg-transparent { background-color: transparent; }

/* ── Header ────────────────────────────────── */

.accordion__header {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    margin-bottom: var(--space-8);
}

.accordion__eyebrow {
    margin: 0;
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: var(--fw-bold);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-text);
}

.accordion__heading {
    margin: 0;
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: var(--fw-semibold);
    line-height: var(--lh-tight);
    color: var(--color-text);
}

.block--accordion.block--bg-navy .accordion__eyebrow,
.block--accordion.block--bg-navy .accordion__heading {
    color: var(--color-text-on-navy);
}

/* ── Liste & Items ─────────────────────────── */

.accordion__list {
    display: flex;
    flex-direction: column;
}

.accordion__item {
    border-top: 1px solid currentColor;
}

.accordion__item:last-child {
    border-bottom: 1px solid currentColor;
}

/* ── Summary (klickbarer Header) ──────────── */

.accordion__summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-4) 0;
    cursor: pointer;
    list-style: none;
    /* Native disclosure marker entfernen */
    -webkit-tap-highlight-color: transparent;
}

.accordion__summary::-webkit-details-marker { display: none; }
.accordion__summary::marker                 { display: none; content: ''; }

.accordion__summary:hover .accordion__title,
.accordion__summary:focus-visible .accordion__title {
    color: var(--color-link-navy);
}

.accordion__summary:focus-visible {
    outline: 2px solid var(--color-electric-blue);
    outline-offset: 2px;
}

.accordion__title {
    font-family: var(--font-display);
    font-size: clamp(var(--text-xl), 2.5vw, var(--text-2xl));
    font-weight: var(--fw-semibold);
    line-height: var(--lh-tight);
    color: inherit;
    transition: color var(--duration-fast) var(--ease-default);
}

/* ── Plus-/Minus-Icon (CSS-only) ──────────── */

.accordion__icon {
    position: relative;
    flex-shrink: 0;
    width: 24px;
    height: 24px;
}

/* Horizontaler Strich */
.accordion__icon::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: currentColor;
    transform: translateY(-50%);
}

/* Vertikaler Strich (verschwindet im offenen Zustand) */
.accordion__icon::after {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 2px;
    height: 100%;
    background-color: currentColor;
    transform: translateX(-50%);
    transition: transform var(--duration-fast) var(--ease-default),
                opacity var(--duration-fast) var(--ease-default);
}

[open] .accordion__icon::after {
    opacity: 0;
    transform: translateX(-50%) rotate(90deg);
}

/* ── Content ───────────────────────────────── */

.accordion__content {
    padding: 0 0 var(--space-6);
    font-family: var(--font-body);
    font-size: var(--text-base);
    line-height: var(--lh-relaxed);
    color: var(--color-text);

    /* Open/Close-Animation — das JS-Modul (assets/js/modules/accordion.js)
     * fängt den Summary-Klick ab und fährt max-height + opacity über
     * diese Transition an / ab. overflow:hidden verhindert während der
     * Animation, dass der noch nicht ausgefahrene Inhalt sichtbar wird. */
    overflow: hidden;
    transition:
        max-height var(--duration-normal) var(--ease-default),
        opacity    var(--duration-normal) var(--ease-default);
}

@media (prefers-reduced-motion: reduce) {
    .accordion__content {
        transition: none;
    }
}

.block--accordion.block--bg-navy .accordion__content { color: var(--color-text-on-navy); }

.accordion__content > *:first-child { margin-top: 0; }
.accordion__content > *:last-child  { margin-bottom: 0; }

/* Empty-Preview im Editor */
.block--accordion--empty {
    padding: var(--space-8) var(--space-6);
    background-color: var(--color-dunkelbeige);
    color: var(--color-text-muted);
    text-align: center;
    font-size: var(--text-sm);
    font-style: italic;
}