.desktop-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9000;

    display: flex;
    flex-direction: column;
    gap: 8px;

    width: 230px;
    height: 100vh;
    padding: 32px 16px;

    background: #ffffff;
    border-right: 1px solid #e2e8f0;
    box-shadow: 8px 0 24px rgba(15, 23, 42, 0.06);
}

.desktop-nav-item {
    display: flex;
    align-items: center;
    gap: 14px;

    min-height: 52px;
    padding: 0 16px;

    color: #64748b;
    border-radius: 12px;
    text-decoration: none;
    font-weight: 600;

    transition:
        background-color 0.2s ease,
        color 0.2s ease,
        transform 0.2s ease;
}

.desktop-nav-item i {
    width: 24px;
    text-align: center;
    font-size: 1.25rem;
}

.desktop-nav-item:hover {
    background: #eff6ff;
    color: #2563eb;
    transform: translateX(2px);
}

.desktop-nav-item.active {
    background: #2563eb;
    color: #ffffff;
}

.sidebar-logo-link {
    display: block;
    margin-bottom: 24px;
}

.sidebar-logo {
    display: block;
    width: 100%;
    max-width: 150px;
    margin: 0 auto;
}

.mobile-bottom-nav {
    display: none;
}

@media (min-width: 769px) {
    .dashboard-page {
        padding-left: 230px;
    }
    .app-page {
        padding-left: 230px;
    }
}

@media (max-width: 768px) {
    body {
        padding-bottom: 84px;
    }

    .desktop-sidebar {
        display: none;
    }

    .dashboard-page {
        padding-left: 0;
    }
    .app-page {
        padding-left: 0;
    }

    .mobile-bottom-nav {
        position: fixed;
        left: 10px;
        right: 10px;
        bottom: 10px;
        z-index: 10000;

        display: grid;
        grid-template-columns: repeat(4, 1fr);

        padding-bottom: env(safe-area-inset-bottom);
        overflow: hidden;

        background: rgba(255, 255, 255, 0.96);
        border: 1px solid #e2e8f0;
        border-radius: 16px;
        box-shadow: 0 10px 30px rgba(15, 23, 42, 0.18);

        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
    }

    .mobile-nav-item {
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 5px;

        min-height: 64px;
        padding: 8px 4px;

        color: #64748b;
        text-decoration: none;
        font-size: 0.72rem;
        font-weight: 600;

        transition:
            background-color 0.2s ease,
            color 0.2s ease;
    }

    .mobile-nav-item i {
        font-size: 1.25rem;
    }

    .mobile-nav-item:hover,
    .mobile-nav-item:focus,
    .mobile-nav-item.active {
        background: #eff6ff;
        color: #2563eb;
    }
}