/* ESS Sidebar Animations */

/* Screen Reader Only Utility */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Desktop Behavior (>=1024px) */
@media (min-width: 1024px) {
    .rz-sidebar {
        transition: transform var(--ess-duration-slow) cubic-bezier(0.4, 0, 0.2, 1);
        will-change: transform;
    }

    .rz-sidebar:not(.rz-sidebar-expanded) {
        transform: translateX(-100%);
    }

    .rz-sidebar.rz-sidebar-expanded {
        transform: translateX(0);
    }

    [dir="rtl"] .rz-sidebar:not(.rz-sidebar-expanded) {
        transform: translateX(100%);
    }

    .ess-sidebar-backdrop {
        display: none;
    }
}

/* Tablet Behavior (768px-1023px) */
@media (min-width: 768px) and (max-width: 1023px) {
    .rz-sidebar {
        position: fixed;
        top: var(--ess-nav-height, 64px);
        inset-inline-start: 0;
        bottom: 0;
        width: var(--ess-sidebar-width, 280px);
        z-index: var(--ess-z-index-modal-backdrop);
        box-shadow: var(--ess-shadow-2xl);
        transition: transform var(--ess-duration-slow) cubic-bezier(0.4, 0, 0.2, 1);
        will-change: transform;
    }

    .rz-sidebar:not(.rz-sidebar-expanded) {
        transform: translateX(-100%);
    }

    .rz-sidebar.rz-sidebar-expanded {
        transform: translateX(0);
    }

    [dir="rtl"] .rz-sidebar:not(.rz-sidebar-expanded) {
        transform: translateX(100%);
    }

    .ess-sidebar-backdrop {
        position: fixed;
        inset: 0;
        top: var(--ess-nav-height, 64px);
        background-color: rgba(0, 0, 0, 0.5);
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--ess-duration-slow) cubic-bezier(0.4, 0, 0.2, 1);
        z-index: calc(var(--ess-z-index-modal-backdrop) - 1);
    }

    .rz-sidebar-expanded ~ .ess-sidebar-backdrop,
    .ess-sidebar-backdrop.visible {
        opacity: 1;
        pointer-events: auto;
    }
}

/* Mobile Behavior (<768px) */
@media (max-width: 767px) {
    .rz-sidebar {
        position: fixed;
        top: var(--ess-nav-height, 64px);
        inset-inline-start: 0;
        bottom: 0;
        width: min(var(--ess-sidebar-width, 280px), 85vw);
        z-index: var(--ess-z-index-modal);
        box-shadow: var(--ess-shadow-2xl);
        transition: transform var(--ess-duration-slow) cubic-bezier(0.4, 0, 0.2, 1);
        will-change: transform;
    }

    .rz-sidebar:not(.rz-sidebar-expanded) {
        transform: translateX(-100%);
    }

    .rz-sidebar.rz-sidebar-expanded {
        transform: translateX(0);
    }

    [dir="rtl"] .rz-sidebar:not(.rz-sidebar-expanded) {
        transform: translateX(100%);
    }

    .ess-sidebar-backdrop {
        position: fixed;
        inset: 0;
        top: var(--ess-nav-height, 64px);
        background-color: rgba(0, 0, 0, 0.6);
        opacity: 0;
        pointer-events: none;
        transition: opacity var(--ess-duration-base) cubic-bezier(0.4, 0, 0.2, 1);
        z-index: calc(var(--ess-z-index-modal) - 1);
    }

    .rz-sidebar-expanded ~ .ess-sidebar-backdrop,
    .ess-sidebar-backdrop.visible {
        opacity: 1;
        pointer-events: auto;
    }
}

/* Content Area Adjustments */
.rz-body {
    transition: margin-inline-start var(--ess-duration-slow) cubic-bezier(0.4, 0, 0.2, 1);
}

/* Performance Optimizations */
.rz-sidebar {
    contain: layout style paint;
}

.rz-body {
    contain: layout style;
}

.rz-sidebar:not(.transitioning) {
    will-change: auto;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    .rz-sidebar,
    .ess-sidebar-backdrop,
    .rz-body,
    .ess-sidebar-toggle {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }
}

/* Focus Management */
.rz-sidebar:focus-within {
    outline: none;
}

/* Print Styles */
@media print {
    .rz-sidebar {
        display: none !important;
    }

    .ess-sidebar-backdrop {
        display: none !important;
    }

    .ess-sidebar-toggle {
        display: none !important;
    }
}

/* Dark Theme Support (Future Enhancement) */
[data-theme="dark"] .ess-sidebar-backdrop {
    background-color: rgba(0, 0, 0, 0.8);
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .rz-sidebar {
        border-inline-end: 2px solid CanvasText;
    }
}

/* Layout State Classes (Optional Enhancement) */
.layout-sidebar-visible {
}

.layout-sidebar-hidden {
}

/* Backdrop Click Target */
[data-sidebar-backdrop] {
    cursor: pointer;
}

[data-sidebar-backdrop]:hover {
    background-color: rgba(0, 0, 0, 0.55);
}

/* Sidebar Content Fade */
.rz-sidebar:not(.rz-sidebar-expanded) .rz-sidebar-content {
    opacity: 0;
    transition: opacity 100ms cubic-bezier(0.4, 0, 1, 1);
}

.rz-sidebar.rz-sidebar-expanded .rz-sidebar-content {
    opacity: 1;
    transition: opacity 200ms cubic-bezier(0, 0, 0.2, 1) 100ms;
}

/* Smooth Scrolling Within Sidebar */
.rz-sidebar {
    overflow-y: auto;
    overflow-x: hidden;
    scroll-behavior: smooth;
}

/* WebKit scrollbar styling for premium look */
.rz-sidebar::-webkit-scrollbar {
    width: 8px;
}

.rz-sidebar::-webkit-scrollbar-track {
    background: var(--ess-color-surface-secondary);
}

.rz-sidebar::-webkit-scrollbar-thumb {
    background: var(--ess-color-gray-300);
    border-radius: var(--ess-radius-full);
}

.rz-sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--ess-color-gray-400);
}