/* Seitenleiste am Computer: standardmäßig zugeklappt (nur Symbole), per Knopf ausklappbar.
   Der Zustand steht als Klasse "nav-open" am <html> (aus localStorage, siehe layout.php) und gilt nur ab 1024 px. */

#nav-tip {
    position: fixed;
    z-index: 70;
    top: 0;
    left: 0;
    padding: .4rem .7rem;
    border-radius: 8px;
    background: var(--c-panel);
    border: 1px solid var(--c-accent);
    color: #f3f4f6;
    font-size: .8rem;
    font-weight: 600;
    line-height: 1.2;
    white-space: nowrap;
    pointer-events: none;
    opacity: 0;
    transform: translate(-8px, -50%);
    transition: opacity .14s ease-out, transform .18s cubic-bezier(.23, 1, .32, 1);
    box-shadow: 0 8px 24px rgba(0, 0, 0, .45);
}
#nav-tip.on { opacity: 1; transform: translate(0, -50%); }

#nav-collapse { display: none; }
#nav-collapse svg { transition: transform .24s cubic-bezier(.23, 1, .32, 1); }
.nav-user-icon { display: none; }

@media (min-width: 1024px) {
    #nav-collapse { display: flex; }
    #sidebar {
        width: 72px;
        overflow: hidden;
        transition: width .24s cubic-bezier(.23, 1, .32, 1);
    }
    html.nav-open #sidebar { width: 16rem; }
    .content-shift {
        margin-left: 72px;
        transition: margin-left .24s cubic-bezier(.23, 1, .32, 1);
    }
    html.nav-open .content-shift { margin-left: 16rem; }
    html.nav-open #nav-collapse svg { transform: rotate(180deg); }

    /* zugeklappt: nur Symbole, mittig */
    html:not(.nav-open) #sidebar .nav-label { display: none; }
    html:not(.nav-open) #sidebar .nav-head { padding-left: 0; padding-right: 0; justify-content: center; }
    html:not(.nav-open) #sidebar .nav-head > div { justify-content: center; }
    html:not(.nav-open) #sidebar nav a,
    html:not(.nav-open) #sidebar nav button,
    html:not(.nav-open) #sidebar .nav-foot a,
    html:not(.nav-open) #sidebar .nav-foot button { justify-content: center; padding-left: 0; padding-right: 0; }
    html:not(.nav-open) #sidebar .nav-foot svg { margin: 0; }
    html:not(.nav-open) .nav-user-icon { display: flex; }
    html.nav-open #sidebar .nav-head { padding-left: 1.25rem; }
}

@media (prefers-reduced-motion: reduce) {
    #sidebar, .content-shift, #nav-collapse svg, #nav-tip { transition: none; }
}

/* Breite Bildschirme: Raster-Klassen, die das vorgebaute Tailwind nicht enthält */
@media (min-width: 1024px) {
    .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (min-width: 1280px) {
    .xl\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .xl\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .xl\:col-span-2 { grid-column: span 2 / span 2; }
}