/* =================================================================
   SIDEBAR NAVIGATION STYLES
   Updated with improved typography, touch targets, and accessibility
   ================================================================= */

.sidebar {
    position: fixed;
    left: 0;
    top: 140px;
    width: 240px;
    height: calc(100vh - 140px - 80px);
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-right: 1px solid var(--c3);
    box-shadow: 4px 0 12px rgba(0, 0, 0, 0.1);
    overflow-y: auto;
    z-index: var(--z-sticky, 200);
    transition: transform var(--transition-normal, 0.25s ease);
    padding: var(--space-3) 0;
}

.sidebar.collapsed {
    transform: translateX(-240px);
}

/* Sidebar Toggle Button - meets 44px touch target */
.sidebar-toggle {
    position: fixed;
    left: 0;
    top: 150px;
    width: 44px;
    min-height: var(--touch-target-min, 44px);
    background: var(--c4);
    border: none;
    border-radius: 0 var(--radius-sm, 8px) var(--radius-sm, 8px) 0;
    padding: var(--space-2);
    cursor: pointer;
    z-index: calc(var(--z-sticky, 200) + 1);
    transition: all var(--transition-normal, 0.25s ease);
    box-shadow: 2px 2px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar.collapsed ~ .sidebar-toggle {
    left: 0;
}

.sidebar:not(.collapsed) ~ .sidebar-toggle {
    left: 240px;
}

.sidebar-toggle:hover {
    background: var(--c5);
}

.sidebar-toggle:focus-visible {
    outline: 3px solid var(--c7);
    outline-offset: 2px;
}

.toggle-icon {
    font-size: 1.1rem;
    color: white;
    display: block;
    line-height: 1;
}

/* Sidebar Navigation */
.sidebar-nav {
    padding: 0 var(--space-2);
}

.sidebar-section {
    margin-bottom: var(--space-3);
}

/* Category Button - improved typography and touch target */
.sidebar-category {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-2);
    min-height: var(--touch-target-min, 44px);
    padding: var(--space-3);
    background: var(--c2);
    border: none;
    border-radius: var(--radius-md, 12px);
    cursor: pointer;
    transition: all var(--transition-fast, 0.15s ease);
    font-family: var(--font-family);
    font-size: 0.875rem; /* 14px - up from 12px */
    font-weight: 600;
    color: var(--c10);
    text-align: left;
}

.sidebar-category:hover {
    background: var(--c3);
    transform: translateX(2px);
}

.sidebar-category:focus-visible {
    outline: 3px solid var(--c7);
    outline-offset: 2px;
}

.sidebar-category .category-icon {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.sidebar-category .category-text {
    flex: 1;
    line-height: var(--line-height-tight, 1.25);
}

.sidebar-category .collapse-icon {
    font-size: 0.75rem;
    transition: transform var(--transition-normal, 0.25s ease);
    color: var(--c7);
    flex-shrink: 0;
}

.sidebar-section.expanded .sidebar-category .collapse-icon {
    transform: rotate(-180deg);
}

/* Submenu */
.sidebar-submenu {
    list-style: none;
    padding: 0;
    margin: var(--space-2) 0 0 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal, 0.25s ease);
}

.sidebar-section.expanded .sidebar-submenu {
    max-height: 500px;
}

.sidebar-submenu li {
    margin: var(--space-1) 0;
}

/* Submenu links - improved typography and touch target */
.sidebar-submenu a,
.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    min-height: var(--touch-target-min, 44px);
    padding: var(--space-2) var(--space-3);
    padding-left: var(--space-4);
    color: var(--c8);
    text-decoration: none;
    border-radius: var(--radius-sm, 8px);
    transition: all var(--transition-fast, 0.15s ease);
    font-size: 0.8125rem; /* 13px - up from 11px */
    line-height: var(--line-height-normal, 1.5);
}

.sidebar-submenu a:hover,
.sidebar-link:hover {
    background: var(--c1);
    color: var(--c10);
    transform: translateX(4px);
}

.sidebar-submenu a:focus-visible,
.sidebar-link:focus-visible {
    outline: 3px solid var(--c7);
    outline-offset: 2px;
}

/* Active state for current page */
.sidebar-submenu a.active,
.sidebar-link.active {
    background: var(--c2);
    color: var(--c10);
    font-weight: 600;
}

.sidebar-link-icon {
    font-size: 1rem;
    flex-shrink: 0;
}

.sidebar-link-text {
    flex: 1;
}

/* Main content stays full width - sidebar floats over it */
.host-main {
    margin-left: 0;
    transition: none;
}

/* Scrollbar styling for sidebar */
.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--c4);
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--c5);
}

/* =================================================================
   RESPONSIVE DESIGN
   ================================================================= */

/* Tablet */
@media (max-width: 1024px) {
    .sidebar {
        width: 220px;
    }

    .sidebar.collapsed {
        transform: translateX(-220px);
    }

    .sidebar:not(.collapsed) ~ .sidebar-toggle {
        left: 220px;
    }
}

/* Mobile - sidebar becomes overlay */
@media (max-width: 768px) {
    .sidebar {
        width: 280px;
        max-width: 85vw;
        top: 0;
        height: 100vh;
        box-shadow: 4px 0 20px rgba(0, 0, 0, 0.2);
        padding-top: var(--space-16);
    }

    .sidebar.collapsed {
        transform: translateX(-100%);
    }

    .sidebar:not(.collapsed) ~ .sidebar-toggle {
        left: min(280px, 85vw);
    }

    /* Larger touch targets on mobile */
    .sidebar-category {
        min-height: 48px;
        padding: var(--space-4);
        font-size: 1rem;
    }

    .sidebar-submenu a,
    .sidebar-link {
        min-height: 48px;
        padding: var(--space-3) var(--space-4);
        font-size: 0.9375rem; /* 15px */
    }

    .sidebar-toggle {
        width: 48px;
        min-height: 48px;
    }
}

/* Overlay backdrop for mobile */
@media (max-width: 768px) {
    .sidebar:not(.collapsed)::before {
        content: '';
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.3);
        z-index: -1;
        opacity: 1;
        transition: opacity var(--transition-normal, 0.25s ease);
    }
}

/* Print styles - hide sidebar */
@media print {
    .sidebar,
    .sidebar-toggle {
        display: none !important;
    }
}