body {
    font-family: "Space Grotesk", sans-serif;
    background: radial-gradient(circle at top, #f8fafc, #e2e8f0 60%, #cbd5f5 100%);
    min-height: 100vh;
}

.glass-card {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(148, 163, 184, 0.3);
}

@media (min-width: 768px) {
    .sidebar {
        width: 5rem;
        transition: width 200ms ease;
    }

    .sidebar:hover {
        width: 18rem;
    }

    .sidebar .nav-label {
        opacity: 0;
        pointer-events: none;
        transition: opacity 150ms ease;
        white-space: nowrap;
    }

    .sidebar:hover .nav-label {
        opacity: 1;
        pointer-events: auto;
    }

    .sidebar .brand-text {
        opacity: 0;
        transition: opacity 150ms ease;
        white-space: nowrap;
    }

    .sidebar:hover .brand-text {
        opacity: 1;
    }

    .nav-icon {
        display: inline-flex;
        align-items: center;
        justify-content: center;
        width: 2rem;
        height: 2rem;
        border-radius: 0.75rem;
        background: rgba(15, 23, 42, 0.6);
        color: #cbd5f5;
        flex-shrink: 0;
    }

    .nav-icon svg {
        width: 1.1rem;
        height: 1.1rem;
        stroke: currentColor;
        fill: none;
        stroke-width: 1.8;
    }

    .nav-item {
        display: flex;
        align-items: center;
        gap: 0.75rem;
    }

    .nav-group summary {
        cursor: pointer;
        list-style: none;
        display: flex;
        align-items: center;
        gap: 0.75rem;
        padding: 0.5rem 0.75rem;
        border-radius: 0.75rem;
    }

    .nav-group summary::-webkit-details-marker {
        display: none;
    }

    .nav-group .group-label {
        font-size: 0.7rem;
        letter-spacing: 0.2em;
        text-transform: uppercase;
        color: #94a3b8;
        white-space: nowrap;
    }

    .sidebar:not(:hover) .nav-group .group-label {
        display: none;
    }

    .nav-group .group-items {
        display: grid;
        gap: 0.25rem;
        margin-left: 0.25rem;
        margin-top: 0.25rem;
    }

    .sidebar .nav-item {
        justify-content: flex-start;
    }

    .sidebar .nav-item .rounded-full {
        margin-left: auto;
    }

    .sidebar:not(:hover) .nav-item .rounded-full {
        display: none;
    }

   

    .sidebar form.nav-item {
        width: 100%;
        max-width: 100%;
        display: flex;
        align-items: center;
        border: 0;
        background: transparent;
        padding-left: 0.75rem;
        padding-right: 0.75rem;
        text-align: left;
    }

    .sidebar form.nav-item:hover {
        border: 1px solid rgba(16, 185, 129, 0.4);
    }

    .sidebar form.nav-item button {
        background: transparent;
        border: 0;
        padding: 0;
        color: inherit;
        font: inherit;
        cursor: pointer;
    }

    .sidebar form.nav-item:hover {
        color: #ffffff;
    }

    .sidebar:not(:hover) form.nav-item .nav-label {
        display: none;
    }
}

@media (min-width: 768px) {
    main {
        margin-left: 5rem;
    }

    main.no-sidebar {
        margin-left: 0;
    }

    body.sidebar-expanded main {
        margin-left: 18rem;
    }
}