:root {
    --sidebar-bg: #f8fbff;
    --sidebar-surface: rgba(255, 255, 255, 0.96);
    --sidebar-surface-strong: #ffffff;
    --sidebar-border: #dbe7f5;
    --sidebar-text: #40566f;
    --sidebar-text-strong: #172033;
    --sidebar-text-muted: #9aa8b8;
    --sidebar-active-bg: #eaf2ff;
    --sidebar-active-text: #2563eb;
    --sidebar-hover-bg: #f2f7ff;
    --sidebar-shadow: 18px 0 40px rgba(15, 23, 42, 0.14);
    --sidebar-glass: rgba(248, 251, 255, 0.9);
    --transition-speed: 0.25s;

    /* Module Accents */
    --accent-tms: #0ea5e9;
    --accent-wms: #f59e0b;
    --accent-erp: #22c55e;
    --accent-maestro: #a855f7;
    --accent-support: #94a3b8;
}

/* Glassmorphism & General Layout */
#layout-menu {
    background: var(--sidebar-bg) !important;
    backdrop-filter: blur(15px);
    border-right: 1px solid var(--sidebar-border);
    width: 280px !important;
    transition: all var(--transition-speed) cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--sidebar-shadow);
}

#layout-menu.collapsed {
    width: 80px !important;
}

/* Brand Area */
.menu .app-brand.demo {
    height: 70px;
    margin-top: 0;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 1px solid rgba(0, 0, 0, 0.02);
    margin-bottom: 0.2rem;
}

.bps-logo {
    max-width: 220px;
    max-height: 50px;
    height: auto;
    width: auto;
    object-fit: contain;
    transition: all var(--transition-speed);
}

#layout-menu.collapsed .app-brand.demo {
    padding: 0;
}

#layout-menu.collapsed .bps-logo {
    width: 45px;
    transform: scale(0.9);
}

/* Menu Content & Scrollbar */
.layout-menu .menu-content {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 1rem 0;
}

.layout-menu .menu-content::-webkit-scrollbar {
    width: 3px;
}

.layout-menu .menu-content::-webkit-scrollbar-thumb {
    background: var(--bps-primary-focus);
    border-radius: 10px;
}

/* Menu Items & Spacing */
.menu-inner {
    padding: 0.75rem 1rem 1.1rem !important;
}

.menu-item {
    margin: 0.18rem 0 !important;
    border-radius: 0.5rem;
    transition: all var(--transition-speed);
}

/* Headers / Category Labels */
.menu-header {
    padding: 1.15rem 0.55rem 0.45rem !important;
    font-size: 0.7rem !important;
    font-weight: 800 !important;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--sidebar-text-muted) !important;
    opacity: 0.95;
}

.menu-link {
    min-height: 42px;
    padding: 0.58rem 0.85rem !important;
    display: flex;
    align-items: center;
    border: 1px solid transparent;
    border-radius: 0.5rem !important;
    background: transparent;
    color: var(--sidebar-text) !important;
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0;
    transition: color var(--transition-speed), background var(--transition-speed), border-color var(--transition-speed), box-shadow var(--transition-speed), transform var(--transition-speed);
}

/* Icons Styling & Accents */
.menu-icon {
    margin-right: 0.72rem !important;
    font-size: 1.22rem !important;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--sidebar-text-muted);
    transition: all var(--transition-speed);
}

/* Custom Module Colors */
.icon-tms {
    color: var(--accent-tms) !important;
}

.icon-wms {
    color: var(--accent-wms) !important;
}

.icon-erp {
    color: var(--accent-erp) !important;
}

.icon-maestro {
    color: var(--accent-maestro) !important;
}

.icon-support {
    color: var(--accent-support) !important;
}

/* Hover & Active States */
.menu-item:not(.active)>.menu-link:hover {
    background: var(--sidebar-hover-bg) !important;
    border-color: var(--sidebar-active-bg);
    color: var(--sidebar-active-text) !important;
    box-shadow: 0 8px 18px var(--bps-primary-focus);
    transform: translateX(3px);
}

.menu-item.active>.menu-link {
    background: var(--sidebar-active-bg) !important;
    border-color: var(--sidebar-active-text);
    color: var(--sidebar-active-text) !important;
    box-shadow: 0 10px 24px var(--bps-primary-focus) !important;
    font-weight: 800;
}

.menu-item.active>.menu-link .menu-icon {
    color: var(--sidebar-active-text) !important;
    transform: scale(1.05);
}

.menu-item.open>.menu-link {
    background: var(--sidebar-surface-strong) !important;
    border-color: #e4edf8;
    color: var(--sidebar-active-text) !important;
}

/* Submenu Styling */
.menu-sub {
    padding-left: 0.78rem !important;
    margin-top: 0.16rem;
    margin-bottom: 0.36rem;
    position: relative;
    border-left: 1px solid #dce9f7;
    margin-left: 0.75rem;
}

.menu-sub .menu-item {
    margin: 0.08rem 0 !important;
}

.menu-sub .menu-link {
    min-height: 34px;
    padding: 0.42rem 0.58rem !important;
    font-size: 0.82rem;
    font-weight: 650;
    opacity: 0.92;
}

.menu-sub .menu-link:hover {
    opacity: 1;
    transform: translateX(3px);
    background: rgba(239, 246, 255, 0.8) !important;
}

/* Handle Long Text Legibility */
.text-truncate {
    white-space: normal !important;
    line-height: 1.3;
    max-width: 100%;
}

/* Collapsed State Adjustments */
#layout-menu.collapsed .menu-link {
    justify-content: center;
    padding: 0.75rem 0 !important;
}

#layout-menu.collapsed .menu-icon {
    margin: 0 !important;
}

#layout-menu.collapsed .text-truncate,
#layout-menu.collapsed .menu-toggle::after,
#layout-menu.collapsed .menu-header {
    display: none !important;
}

/* Smooth Transitions for Collapsing */
.menu-item,
.menu-link,
.menu-icon,
.app-brand img {
    will-change: transform, opacity, background;
}

/* Disabled & Blocked States */
.disabled-sidebar {
    pointer-events: none;
    opacity: 0.4;
    filter: grayscale(1);
}

.menu-item-blocked {
    opacity: 0.5 !important;
    filter: grayscale(1);
    pointer-events: none;
    cursor: default;
}

.menu-item-blocked .menu-link {
    color: var(--sidebar-text-muted) !important;
}

.menu-item-blocked .menu-icon {
    color: var(--sidebar-text-muted) !important;
}

/* Mobile Responsiveness */
@media (max-width: 1199.98px) {
    #layout-menu {
        transform: translateX(-100%);
        box-shadow: 10px 0 30px rgba(0, 0, 0, 0.1);
    }

    .layout-menu-expanded #layout-menu {
        transform: translateX(0);
    }
}