/* ============================================
   MOBILE.CSS
   
   This file contains styles for mobile/tablet responsive elements:
   
   - Hamburger menu button: The three-line menu button for mobile devices
     (position, size, animation when clicked/active)
   - Sidebar overlay: The dark overlay that appears behind the sidebar on mobile
     (used to close sidebar when clicked, dims background)
   - Sidebar animations: Transform and transition effects for mobile sidebar
   
   Note: These styles are hidden by default and shown via media queries
   in responsive.css for smaller screens.
   
   Influences: Mobile menu button, sidebar overlay, mobile interactions
   ============================================ */

.hamburger-menu {
    display: none;
    position: fixed;
    top: .5rem;
    left: .5rem;
    z-index: 1001;
    background-color: #f5f5f5;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 0.75rem;
    cursor: pointer;
    flex-direction: column;
    gap: 6px;
    width: 56px;
    height: 56px;
    justify-content: center;
    align-items: center;
}

.hamburger-menu span {
    display: block;
    width: 32px;
    height: 3px;
    background-color: #000;
    transition: all 0.3s ease;
}

.hamburger-menu.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

.hamburger-menu.active span:nth-child(2) {
    opacity: 0;
}

.hamburger-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.sidebar-overlay.active {
    opacity: 1;
    pointer-events: auto;
}