/* ============================================================
   Mega-Menu — Desktop only (mobile uses MobileMenuSheet)
   Loaded after app-shell.css.
   ============================================================ */

.megamenu {
    display: flex;
    align-items: center;
    gap: 2px;
    height: 100%;
}

.megamenu__item {
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
}

/* ===== Trigger (button styled like .appbar-link) ===== */
.megamenu__trigger {
    background: none;
    border: 0;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-family: inherit;
}
.megamenu__trigger[aria-expanded="true"] {
    color: var(--text-primary);
    background: var(--bg-hover);
}

.megamenu__caret {
    transition: transform 200ms cubic-bezier(0.16, 1, 0.3, 1);
    opacity: 0.6;
}
.megamenu__trigger[aria-expanded="true"] .megamenu__caret {
    transform: rotate(180deg);
    opacity: 1;
}

/* ============================================================
   Panel — drops out of the appbar, full-width container
   ============================================================ */
.megamenu__panel {
    position: fixed;
    top: 60px; /* appbar height */
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    width: min(1100px, calc(100vw - 56px));
    max-width: calc(100vw - 56px);

    background: var(--bg-surface);
    border: 1px solid var(--border-default);
    border-top-color: var(--border-subtle);
    border-radius: 0 0 14px 14px;
    box-shadow: var(--shadow-lg);

    opacity: 0;
    pointer-events: none;
    transition: opacity 220ms cubic-bezier(0.16, 1, 0.3, 1),
                transform 260ms cubic-bezier(0.16, 1, 0.3, 1);

    z-index: 110;
    overflow: hidden;
}
.megamenu__panel[hidden] { display: none; }

.megamenu__item.is-open .megamenu__panel {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

.megamenu__panel-inner {
    padding: 28px 36px 32px;
    display: block;
}
.megamenu__panel-inner--split {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 36px;
}

.megamenu__panel-head {
    margin-bottom: 22px;
    padding-bottom: 18px;
    border-bottom: 1px solid var(--border-subtle);
}
.megamenu__panel-eyebrow {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    color: var(--brand-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    display: block;
    margin-bottom: 6px;
}
.megamenu__panel-title {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    margin: 0;
    line-height: 1.1;
}

.megamenu__col-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 10.5px;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--border-subtle);
}

/* ============================================================
   Grid layouts
   ============================================================ */
.megamenu__grid {
    display: grid;
    gap: 4px;
}
.megamenu__grid--1 { grid-template-columns: 1fr; }
.megamenu__grid--2 { grid-template-columns: 1fr 1fr; gap: 6px 18px; }
.megamenu__grid--3 { grid-template-columns: repeat(3, 1fr); gap: 8px 14px; }

/* ============================================================
   Mega-Card (used for Systeme — number + title + desc)
   ============================================================ */
.megacard {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 14px 16px;
    border: 1px solid var(--border-subtle);
    border-radius: 10px;
    background: var(--bg-base);
    text-decoration: none;
    transition: border-color 180ms ease,
                background-color 180ms ease,
                transform 180ms cubic-bezier(0.16, 1, 0.3, 1);
}
.megacard:hover {
    border-color: var(--brand-primary-border);
    background: var(--bg-surface);
    transform: translateY(-1px);
}
.megacard__num {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--brand-primary);
    letter-spacing: 0.08em;
}
.megacard__title {
    font-family: var(--font-display);
    font-size: 16px;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: -0.015em;
    line-height: 1.15;
}
.megacard__desc {
    font-size: 12.5px;
    line-height: 1.45;
    color: var(--text-secondary);
}

/* ============================================================
   Mega-Link (lighter rows for Dachtypen / Förderung / Wissen / Unternehmen)
   ============================================================ */
.megalink {
    display: flex;
    flex-direction: column;
    gap: 3px;
    padding: 10px 12px;
    border-radius: 8px;
    text-decoration: none;
    transition: background-color 160ms ease;
}
.megalink:hover { background: var(--bg-elevated); }
.megalink__title {
    font-size: 14px;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}
.megalink__desc {
    font-size: 12px;
    line-height: 1.4;
    color: var(--text-muted);
}

/* ============================================================
   Teaser block (right side of split panels)
   ============================================================ */
.megamenu__teaser {
    background: linear-gradient(155deg, var(--brand-primary-glow), transparent 70%), var(--bg-elevated);
    border: 1px solid var(--brand-primary-border);
    border-radius: 12px;
    padding: 22px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-self: stretch;
    justify-content: center;
}
.megamenu__teaser-eyebrow {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--brand-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 500;
}
.megamenu__teaser-title {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 500;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    margin: 0;
    line-height: 1.15;
}
.megamenu__teaser-text {
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-secondary);
    margin: 0 0 6px;
}

/* ============================================================
   Backdrop — dims rest of page when any panel is open
   ============================================================ */
.megamenu__backdrop {
    position: fixed;
    inset: 60px 0 0 0;
    background: rgba(26, 24, 21, 0.18);
    opacity: 0;
    pointer-events: none;
    transition: opacity 220ms ease;
    z-index: 105;
}
.megamenu.has-open .megamenu__backdrop {
    opacity: 1;
    pointer-events: auto;
}

/* ============================================================
   Hide the entire desktop megamenu on mobile —
   the MobileMenuSheet takes over (see mobile.css extension below).
   ============================================================ */
@media (max-width: 900px) {
    .megamenu { display: none !important; }
}

/* ============================================================
   Mobile — Accordion sections inside MobileMenuSheet
   ============================================================ */
.msheet-group {
    border-bottom: 1px solid var(--border-subtle);
}
.msheet-group:last-of-type { border-bottom: 0; }

.msheet-group__trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    background: none;
    border: 0;
    padding: 16px 4px;
    cursor: pointer;
    text-align: left;
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 500;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}
.msheet-group__trigger-num {
    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;
    color: var(--brand-primary);
    margin-right: 14px;
    letter-spacing: 0.08em;
    flex: 0 0 auto;
}
.msheet-group__trigger-label { flex: 1; }
.msheet-group__caret {
    transition: transform 240ms cubic-bezier(0.16, 1, 0.3, 1);
    color: var(--text-muted);
    flex: 0 0 auto;
}
.msheet-group[data-open="true"] .msheet-group__caret { transform: rotate(180deg); }

.msheet-group__panel {
    overflow: hidden;
    max-height: 0;
    transition: max-height 280ms cubic-bezier(0.16, 1, 0.3, 1);
}
.msheet-group[data-open="true"] .msheet-group__panel {
    max-height: 800px;
}
.msheet-group__panel-inner {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 4px 0 16px 36px;
}
.msheet-sublink {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: 8px 8px;
    border-radius: 6px;
    text-decoration: none;
}
.msheet-sublink:hover,
.msheet-sublink:focus-visible { background: var(--bg-elevated); }
.msheet-sublink__title {
    font-size: 14.5px;
    font-weight: 500;
    color: var(--text-primary);
}
.msheet-sublink__desc {
    font-size: 12px;
    line-height: 1.4;
    color: var(--text-muted);
}

/* Reduce-motion */
@media (prefers-reduced-motion: reduce) {
    .megamenu__panel,
    .megamenu__caret,
    .megamenu__backdrop,
    .msheet-group__panel,
    .msheet-group__caret { transition: none !important; }
}