/* ========================================
   RESPONSIVE SIDEBAR MENU STYLES
   ======================================== */

/* Sidebar Menu Group Styles */
.menu-group {
    margin-bottom: 8px;
}

.menu-group-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    color: var(--text-secondary, #718096);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    border-radius: 12px;
    transition: all 0.2s ease;
    user-select: none;
}

.menu-group-header:hover {
    background: rgba(31, 166, 160, 0.05);
    color: var(--primary-teal, #1FA6A0);
}

.menu-group-header i.group-icon {
    margin-right: 8px;
    font-size: 0.875rem;
}

.menu-group-header i.chevron {
    font-size: 0.75rem;
    transition: transform 0.2s ease;
}

.menu-group-header.collapsed i.chevron {
    transform: rotate(-90deg);
}

.menu-group-items {
    max-height: 1000px;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    opacity: 1;
}

.menu-group-items.collapsed {
    max-height: 0;
    opacity: 0;
}

.menu-group-items .nav-item {
    margin-bottom: 4px;
}

.menu-group-items .nav-link {
    padding-left: 40px;
    font-size: 0.875rem;
}

/* Single Menu Item (no group) */
.menu-single-item {
    margin-bottom: 8px;
}

/* Mobile Sidebar Styles */
@media (max-width: 1024px) {
    .sidebar {
        position: fixed;
        top: 0;
        left: 0;
        width: 280px;
        height: 100vh;
        margin: 0;
        border-radius: 0;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 2000;
    }
    
    .sidebar.show {
        transform: translateX(0);
    }
    
    /* Backdrop */
    .sidebar-backdrop {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 1999;
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.3s ease, visibility 0.3s ease;
    }
    
    .sidebar-backdrop.show {
        opacity: 1;
        visibility: visible;
    }
    
    /* Mobile menu toggle button */
    .mobile-menu-toggle {
        position: fixed;
        bottom: 24px;
        right: 24px;
        width: 56px;
        height: 56px;
        background: var(--teal-gradient, linear-gradient(135deg, #1FA6A0, #138C87));
        border: none;
        border-radius: 50%;
        box-shadow: 0 8px 24px rgba(31, 166, 160, 0.4);
        color: white;
        font-size: 1.25rem;
        cursor: pointer;
        z-index: 1998;
        transition: all 0.3s ease;
    }
    
    .mobile-menu-toggle:hover {
        transform: scale(1.1);
        box-shadow: 0 12px 32px rgba(31, 166, 160, 0.5);
    }
    
    .mobile-menu-toggle:active {
        transform: scale(0.95);
    }
    
    /* Hide mobile toggle when sidebar is open */
    .sidebar.show ~ .mobile-menu-toggle {
        opacity: 0;
        pointer-events: none;
    }
    
    /* Close button in sidebar */
    .sidebar-close-btn {
        display: block;
        position: absolute;
        top: 16px;
        right: 16px;
        width: 32px;
        height: 32px;
        background: rgba(255, 255, 255, 0.2);
        border: none;
        border-radius: 8px;
        color: var(--text-primary, #2D3748);
        font-size: 1rem;
        cursor: pointer;
        transition: all 0.2s ease;
    }
    
    .sidebar-close-btn:hover {
        background: rgba(255, 255, 255, 0.3);
    }
}

/* Desktop - hide close button and backdrop */
@media (min-width: 1025px) {
    .sidebar-close-btn {
        display: none;
    }
    
    .sidebar-backdrop {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: none;
    }
}

/* Tablet Styles (768px - 1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
    .sidebar {
        width: 240px;
    }
    
    .menu-group-header {
        font-size: 0.7rem;
        padding: 10px 12px;
    }
    
    .menu-group-items .nav-link {
        padding-left: 32px;
        font-size: 0.8125rem;
    }
}

/* Mobile Styles (< 768px) */
@media (max-width: 767px) {
    .main-content {
        margin-left: 0 !important;
        padding: 12px !important;
    }
    
    .top-bar {
        margin-bottom: 16px;
        padding: 12px 16px;
    }
    
    /* Adjust sidebar for mobile */
    .sidebar {
        width: 280px;
        padding: 20px 16px;
    }
    
    .sidebar-header {
        padding-bottom: 20px;
        margin-bottom: 20px;
    }
    
    .logo-container {
        font-size: 1.25rem;
    }
    
    .user-info {
        padding: 12px;
        margin-bottom: 16px;
    }
}

/* Icon-only sidebar for very small screens */
@media (max-width: 480px) {
    .sidebar {
        width: 260px;
    }
}

/* Smooth scrolling for sidebar menu */
.modern-nav {
    overflow-y: auto;
    overflow-x: hidden;
    max-height: calc(100vh - 200px);
    padding-right: 4px;
}

/* Custom scrollbar for sidebar */
.modern-nav::-webkit-scrollbar {
    width: 6px;
}

.modern-nav::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
}

.modern-nav::-webkit-scrollbar-thumb {
    background: rgba(31, 166, 160, 0.3);
    border-radius: 3px;
}

.modern-nav::-webkit-scrollbar-thumb:hover {
    background: rgba(31, 166, 160, 0.5);
}

/* Animation for menu items */
@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.menu-group-items .nav-item {
    animation: slideIn 0.2s ease forwards;
}

.menu-group-items .nav-item:nth-child(1) { animation-delay: 0.05s; }
.menu-group-items .nav-item:nth-child(2) { animation-delay: 0.1s; }
.menu-group-items .nav-item:nth-child(3) { animation-delay: 0.15s; }
.menu-group-items .nav-item:nth-child(4) { animation-delay: 0.2s; }
.menu-group-items .nav-item:nth-child(5) { animation-delay: 0.25s; }