:root {
    --sidebar-width: 230px;
}

.sidebar {
    width: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    position: relative;
    flex-shrink: 0;
}

.sidebar::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 1px;
    height: 100%;
    background: rgba(255, 255, 255, 0.08);
}

.sidebar-header {
    padding: 15px;
}

/* Логотип */
.brand-logo {
    font-size: 1.5rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 12px;
}

.brand-logo::before {
    content: '';
    display: block;
    width: 25px;
    height: 25px;
    background: linear-gradient(135deg, var(--accent) 0%, #a855f7 100%);
    border-radius: 8px;
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.5);
    flex-shrink: 0;
}

.brand-text {
    color: var(--text-main);
    letter-spacing: -0.5px;
}

.brand-text span {
    color: var(--accent);
}

.sidebar-divider {
    height: 1px;
    background: rgba(255, 255, 255, 0.08);
    margin: 0 12px;
}



/* Меню */
.sidebar-menu {
    margin-top: 15px;
    display: flex;
    flex-direction: column;
    gap: 4px;
    padding: 0 12px;
}

.menu-item {
    text-decoration: none;
    color: var(--text-muted);
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
    font-weight: 500;
}

.menu-item:hover {
    background: rgba(56, 189, 248, 0.12);
    color: var(--text-main);
}

.menu-item.active {
    background: rgba(126, 34, 206, 0.15);
    color: #c084fc;
    font-weight: 600;
    position: relative;
}

.menu-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 20%;
    height: 60%;
    width: 3px;
    background-color: #a855f7;
    border-radius: 0 4px 4px 0;
    box-shadow: 0 0 10px #a855f7, 0 0 3px #7e22ce;
}

/* Вложенное подменю (Submenu) */
.menu-group {
    display: flex;
    flex-direction: column;
}

.submenu {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding-left: 20px;
    margin-top: 2px;
    margin-bottom: 4px;
    border-left: 1px solid rgba(255, 255, 255, 0.08);
    margin-left: 16px;
}

.submenu-item {
    text-decoration: none;
    color: var(--text-muted);
    padding: 6px 10px;
    font-size: 0.85rem;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
}

.submenu-item:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.05);
}

.submenu-item.active {
    color: var(--accent);
    font-weight: 600;
}

.menu-item.menu-title {
    cursor: default;
}

.menu-item.menu-title:not(.active) {
    background: transparent;
    color: var(--text-muted, #94a3b8);
}

/* Адаптив для мобильных устройств */
@media (max-width: 768px) {
    .sidebar {
        width: 100% !important;
        min-width: unset;
        height: auto;
        border-right: none;
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        padding: 12px 16px;
    }

    .sidebar::after {
        display: none;
    }

    .sidebar-menu {
        margin-top: 8px;
        flex-direction: row;
        flex-wrap: wrap;
        padding: 0;
        gap: 8px;
    }

    .submenu {
        flex-direction: row;
        flex-wrap: wrap;
        padding-left: 0;
        margin: 0;
        border-left: none;
    }
}