/* --- Basic Setup & Variables --- */
:root {
    --eps-sidebar-width: 280px;
    --eps-sidebar-bg: #f4f4f4;
    --eps-sidebar-text: #333;
    --eps-link-hover-bg: #e0e0e0;
    --eps-link-active-bg: #d1d1d1;
    --eps-border-color: #ddd;
    --eps-transition-speed: 0.3s;
    --eps-icon-color: #555;
}

body {
    font-family: Arial, sans-serif;
    margin: 0;
    background-color: #fff;
}

.eps-page-container {
    /* Ensures the container wraps content */
}

/* --- Mobile Burger Toggle --- */
.eps-mobile-toggle {
    display: block;
    /* Show by default on mobile */
    position: fixed;
    /* Keep it visible */
    top: 15px;
    left: 15px;
    z-index: 1001;
    background: var(--eps-sidebar-bg);
    border: 1px solid var(--eps-border-color);
    border-radius: 4px;
    width: 44px;
    height: 44px;
    cursor: pointer;
    padding: 10px;
}

.eps-burger-icon,
.eps-burger-icon::before,
.eps-burger-icon::after {
    content: '';
    display: block;
    background: var(--eps-icon-color);
    height: 3px;
    border-radius: 2px;
    transition: all var(--eps-transition-speed) ease-in-out;
}

.eps-burger-icon::before {
    transform: translateY(-8px);
}

.eps-burger-icon::after {
    transform: translateY(5px);
    /* 8px - 3px height */
}

/* "X" icon state when menu is open */
.eps-mobile-toggle[aria-expanded="true"] .eps-burger-icon {
    background: transparent;
}

.eps-mobile-toggle[aria-expanded="true"] .eps-burger-icon::before {
    transform: translateY(0) rotate(45deg);
}

.eps-mobile-toggle[aria-expanded="true"] .eps-burger-icon::after {
    transform: translateY(-3px) rotate(-45deg);
    /* 0px - 3px height */
}


/* --- Sidebar Navigation (Mobile First) --- */
.eps-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--eps-sidebar-width);
    height: 100vh;            
    max-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;    
}

.eps-sidebar-scroll {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding-top: 70px;
    padding-bottom: 30px;
    scroll-behavior: smooth;
    max-height: 100%;
    height: 100%;
}
/* Open state for mobile */
.eps-sidebar.is-open {
    transform: translateX(0);
    visibility: visible;
    box-shadow: 5px 0 15px rgba(0, 0, 0, 0.1);
}

/* Overlay for when mobile menu is open */
.eps-sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--eps-transition-speed), visibility var(--eps-transition-speed);
}

.eps-sidebar-overlay.is-visible {
    opacity: 1;
    visibility: visible;
}


/* --- Menu Item Styling --- */
.eps-sidebar ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.eps-sidebar ul[role="menu"] {
    display: flex;
    flex-direction: column;
}

.eps-menu-item {
    border-bottom: 1px solid var(--eps-border-color);
}

.eps-menu-item:first-child {
    border-top: 1px solid var(--eps-border-color);
}

.eps-menu-link,
.eps-menu-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    font-size: 16px;
    color: var(--eps-sidebar-text);
    text-decoration: none;
    width: 100%;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: background-color var(--eps-transition-speed);
}

.eps-menu-link:hover,
.eps-menu-toggle:hover {
    background-color: var(--eps-link-hover-bg);
}

/* Active link style */
.eps-menu-link.is-active {
    background-color: var(--eps-link-active-bg);
    font-weight: bold;
}

/* --- Accordion Styling --- */
.eps-menu-toggle .eps-menu-icon {
    width: 12px;
    height: 12px;
    position: relative;
    transition: transform var(--eps-transition-speed) ease-in-out;
    flex-shrink: 0;
    margin-left: 10px;
}

.eps-menu-toggle .eps-menu-icon::before,
.eps-menu-toggle .eps-menu-icon::after {
    content: '';
    position: absolute;
    background-color: var(--eps-icon-color);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.eps-menu-toggle .eps-menu-icon::before {
    width: 10px;
    /* Horizontal bar */
    height: 2px;
}

.eps-menu-toggle .eps-menu-icon::after {
    width: 2px;
    /* Vertical bar */
    height: 10px;
}

/* "Open" state icon (rotates to a minus "-") */
.eps-menu-item.is-open>.eps-menu-toggle .eps-menu-icon {
    transform: rotate(180deg);
}

.eps-menu-item.is-open>.eps-menu-toggle .eps-menu-icon::after {
    transform: translate(-50%, -50%) rotate(90deg);
    /* Hide vertical bar */
}

/* Submenu container */
.eps-submenu-container {
    /* Micro-animation using max-height */
    max-height: 0;
    overflow: hidden;
    visibility: hidden;
    transition: max-height var(--eps-transition-speed) ease-in-out,
        visibility var(--eps-transition-speed) 0s;
    background-color: #fff;
    /* Slightly different background for sub-levels */
}

/* Open state for submenu */
.eps-menu-item.is-open>.eps-submenu-container {
    max-height: 2000px;
    /* Large value to allow for content */
    visibility: visible;
}

/* Indent sub-items */
.eps-submenu-container .eps-menu-link,
.eps-submenu-container .eps-menu-toggle {
    padding-left: 32px;
}

/* Deeper indentation */
.eps-submenu-container .eps-submenu-container .eps-menu-link,
.eps-submenu-container .eps-submenu-container .eps-menu-toggle {
    padding-left: 46px;
}

/* Error message styling */
.eps-error-message {
    padding: 20px;
    color: #D8000C;
    background-color: #FFD2D2;
    border: 1px solid #D8000C;
    margin: 20px;
    border-radius: 4px;
}

/* --- Main Content Area (Mobile) --- */
.eps-main-content {
    padding: 70px 20px 20px 20px;
    /* Top padding to clear burger */
}


/* --- Desktop View (min-width: 1024px) --- */
@media (min-width: 1024px) {

    .eps-sidebar-scroll {
    padding-top: 20px;
}

    /* Hide mobile toggle */
    .eps-mobile-toggle {
        display: none;
    }

    /* Make sidebar permanently visible on the left */
    .eps-sidebar {
        transform: translateX(0);
        visibility: visible;
        padding-top: 20px;
        /* Reset padding */
        box-shadow: none;
        /* Remove mobile shadow */
    }

    /* Push main content to the right */
    .eps-main-content {
        margin-left: var(--eps-sidebar-width);
        padding: 20px;
        /* Reset padding */
    }

    /* Hide the mobile overlay */
    .eps-sidebar-overlay {
        display: none;
    }
}