/* Modern Flexbox Side Navigation Styles */

/* Menu toggle button */
.menu-toggle {
    display: block;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    margin-right: 1rem;
    color: var(--text-color);
    border-radius: var(--border-radius-sm);
    transition: background-color 0.2s ease;
}

.menu-toggle:hover {
    background-color: rgba(0, 0, 0, 0.1);
}

.menu-toggle .material-symbols-outlined {
    font-size: 1.5rem;
}

/* Top navigation adjustments */
.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.nav-left {
    display: flex;
    align-items: center;
}

/* Main app layout container using flexbox */
.app-layout {
    display: flex;
    min-height: calc(100vh - 80px); /* Account for header height */
    position: relative;
}

/* Side navigation */
.side-nav {
    width: 280px;
    background: white;
    border-right: 1px solid var(--border-color);
    flex-shrink: 0; /* Prevent shrinking */
    transition: width 0.3s ease, transform 0.3s ease;
    z-index: 100;
    order: 1; /* Ensure side nav comes first in flex order */
}

.side-nav-content {
    position: relative;
    height: 100%;
}

/* Navigation menu */
.nav-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-group {
    margin-bottom: 0.5rem;
}

.nav-group-header {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    color: var(--secondary-color);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background-color: var(--form-bg);
    border-bottom: 1px solid var(--border-color);
}

.nav-group-header .material-symbols-outlined {
    margin-right: 0.75rem;
    font-size: 1.125rem;
}

.nav-group-items {
    list-style: none;
    padding: 0;
    margin: 0;
}

.nav-item {
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.nav-link {
    display: flex;
    align-items: center;
    padding: 1rem 1.5rem;
    color: var(--text-color);
    text-decoration: none;
    transition: all 0.2s ease;
    position: relative;
}

.notification-badge {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: #ef4444;
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.15rem 0.4rem;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
    line-height: 1;
}

.nav-link:hover {
    background-color: var(--primary-transparent);
    color: var(--primary-color);
}

.nav-link.active {
    background-color: var(--primary-transparent);
    color: var(--primary-color);
    border-right: 3px solid var(--primary-color);
}

.nav-link .material-symbols-outlined {
    margin-right: 0.75rem;
    font-size: 1.25rem;
    transition: color 0.2s ease;
}

/* SVG icon styling for nav links */
.nav-link svg {
    margin-right: 0.75rem;
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
    transition: fill 0.2s ease;
}

.nav-link:hover svg path,
.nav-link.active svg path {
    fill: var(--primary-color);
}

.nav-text {
    font-weight: 500;
}

/* Main content area */
.main-content {
    flex: 1; /* Take up remaining space */
    padding: var(--spacing-xl);
    background-color: var(--background-color);
    order: 2; /* Ensure main content comes after side nav */
    overflow-x: auto; /* Handle horizontal overflow */
}

/* Hidden state for side nav - handled in desktop media query */

/* Mobile styles */
@media (max-width: 768px) {
    .app-layout {
        flex-direction: row; /* Keep row direction but side nav will be positioned absolutely */
        position: relative;
    }
    
    .side-nav {
        position: absolute; /* Use absolute positioning within the flex container */
        top: 0;
        left: 0;
        height: 100vh;
        width: 280px;
        transform: translateX(-100%);
        box-shadow: var(--shadow-md);
        z-index: 1000;
    }
    
    .side-nav.open {
        transform: translateX(0);
    }
    
    .side-nav.closed {
        transform: translateX(-100%); /* Same as default on mobile */
    }
    
    .side-nav-content {
    }
    
    .main-content {
        flex: 1; /* Take full width since side nav is absolutely positioned */
        padding: var(--spacing-md);
    }
    
    /* Overlay for mobile */
    .nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        visibility: hidden;
        transition: all 0.3s ease;
    }
    
    .nav-overlay.active {
        opacity: 1;
        visibility: visible;
    }
}

/* Desktop styles - enhanced flexbox behavior */
@media (min-width: 769px) {
    .app-layout {
        flex-direction: row;
    }
    
    .side-nav {
        position: static; /* Use static positioning in flexbox for proper flow */
        height: auto;
        transform: translateX(0); /* Reset any transforms */
    }
    
    .side-nav.closed {
        width: 0;
        min-width: 0;
        transform: translateX(0);
        overflow: hidden;
    }
    
    .main-content {
        /* Ensure main content takes remaining space */
        flex: 1;
        min-width: 0; /* Allow shrinking */
    }
}

/* Collapsed state for desktop (compact mode) */
.side-nav.collapsed {
    width: 60px;
}

.side-nav.collapsed .nav-text {
    display: none;
}

.side-nav.collapsed .nav-group-header {
    justify-content: center;
    padding: 0.75rem;
}

.side-nav.collapsed .nav-group-header .nav-text {
    display: none;
}

.side-nav.collapsed .nav-group-header .material-symbols-outlined {
    margin-right: 0;
}

.side-nav.collapsed .nav-link {
    justify-content: center;
    padding: 1rem;
}

.side-nav.collapsed .nav-link .material-symbols-outlined {
    margin-right: 0;
}

.side-nav.collapsed .nav-link svg {
    margin-right: 0;
}

/* Responsive adjustments for smaller screens */
@media (max-width: 480px) {
    .side-nav {
        width: 100%;
    }
    
    .nav-link {
        padding: 1.25rem 1.5rem;
        font-size: 1.1rem;
    }
    
    .nav-group-header {
        padding: 1rem 1.5rem;
        font-size: 1rem;
    }
    
    .main-content {
        padding: var(--spacing-md);
    }
}

/* Animation improvements */
.side-nav,
.main-content {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Logout navigation group styling */
.logout-nav-group {
    margin-top: auto; /* Push to bottom when parent is flex column */
    border-top: 1px solid var(--border-color);
    margin-bottom: 0;
}

.logout-nav-group .nav-item {
    border-bottom: none;
}

.logout-link {
    color: var(--danger-color, #dc3545) !important;
    font-weight: 600;
}

.logout-link:hover {
    background-color: rgba(220, 53, 69, 0.1) !important;
    color: var(--danger-color, #dc3545) !important;
}

.logout-link .material-symbols-outlined {
    color: var(--danger-color, #dc3545);
}

/* Make nav-menu a flex container to allow logout to stick to bottom */
.nav-menu {
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: calc(100vh - 80px); /* Account for header height */
}

/* Focus states for accessibility */
.menu-toggle:focus,
.nav-link:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}