/* ===== UNIFIED HAMBURGER MENU COMPONENT ===== */
/* This file provides a consistent, mobile-responsive hamburger menu across all pages */

/* Hamburger Menu - Mobile First Approach */
.hamburger-menu {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1002;
    display: none; /* Hidden by default, shown on mobile */
}

/* Hamburger Button */
.hamburger-btn {
    width: 44px; /* Larger touch target for mobile */
    height: 44px;
    border: none;
    background: var(--bg-elevated, #ffffff);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    border: 1px solid var(--border-primary, #e8eaed);
}

.hamburger-btn:hover {
    background: var(--hover-overlay, rgba(0, 0, 0, 0.04));
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.hamburger-btn:active {
    transform: scale(0.95);
}

/* Hamburger Icon - Custom animated lines */
.hamburger-icon {
    width: 24px;
    height: 18px;
    position: relative;
    cursor: pointer;
}

.hamburger-icon span {
    display: block;
    position: absolute;
    height: 3px;
    width: 100%;
    background: var(--text-secondary, #5f6368);
    border-radius: 3px;
    opacity: 1;
    left: 0;
    transform: rotate(0deg);
    transition: all 0.25s ease-in-out;
}

.hamburger-icon span:nth-child(1) {
    top: 0px;
}

.hamburger-icon span:nth-child(2) {
    top: 7px;
}

.hamburger-icon span:nth-child(3) {
    top: 14px;
}

/* Hamburger Animation - Open State */
.hamburger-icon.open span:nth-child(1) {
    top: 7px;
    transform: rotate(135deg);
}

.hamburger-icon.open span:nth-child(2) {
    opacity: 0;
    left: -60px;
}

.hamburger-icon.open span:nth-child(3) {
    top: 7px;
    transform: rotate(-135deg);
}

/* Top Bar - Enhanced for mobile */
.top-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background: var(--bg-elevated, #ffffff);
    border-bottom: 1px solid var(--border-primary, #e8eaed);
    display: none; /* Hidden by default */
    align-items: center;
    padding: 0 20px;
    z-index: 1001;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.top-bar-content {
    display: flex;
    align-items: center;
    width: 100%;
}

.top-bar-logo {
    font-size: 18px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-blue, #1a73e8), var(--accent-purple, #9334e6));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    margin-left: 60px; /* Account for hamburger button */
}

/* Sidebar Enhancements */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: 280px;
    height: 100vh;
    background: var(--bg-elevated, #ffffff);
    border-right: 1px solid var(--border-primary, #e8eaed);
    transform: translateX(0);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 1000;
    box-shadow: 0 4px 6px var(--shadow-light, rgba(60, 64, 67, 0.1));
    overflow-y: auto;
}

.sidebar.collapsed {
    transform: translateX(-280px);
}

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

.sidebar-overlay.show {
    display: block;
    opacity: 1;
}

/* Main Content Adjustments */
.main-content {
    margin-left: 280px;
    transition: margin-left 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-height: 100vh;
    padding-top: 0; /* No top padding on desktop */
}

.main-content.mobile-mode {
    margin-left: 0;
    padding-top: 84px; /* Account for top bar + padding */
}

/* ===== RESPONSIVE BREAKPOINTS ===== */

/* Tablet and smaller */
@media (max-width: 1024px) {
    .main-content {
        margin-left: 0;
        padding-top: 84px;
    }
    
    .top-bar {
        display: flex;
    }
    
    .hamburger-menu {
        display: block;
    }
    
    .sidebar {
        transform: translateX(-280px);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
}

/* Mobile phones */
@media (max-width: 768px) {
    .hamburger-menu {
        top: 16px;
        left: 16px;
    }
    
    .top-bar {
        height: 56px;
        padding: 0 16px;
    }
    
    .top-bar-logo {
        font-size: 16px;
        margin-left: 50px;
    }
    
    .main-content.mobile-mode {
        padding-top: 76px;
    }
    
    .sidebar {
        width: 100%;
        max-width: 280px;
    }
}

/* Small mobile phones */
@media (max-width: 480px) {
    .hamburger-btn {
        width: 40px;
        height: 40px;
    }
    
    .hamburger-icon {
        width: 20px;
        height: 16px;
    }
    
    .top-bar-logo {
        font-size: 14px;
        margin-left: 45px;
    }
}

/* ===== ACCESSIBILITY ENHANCEMENTS ===== */

/* Focus states for keyboard navigation */
.hamburger-btn:focus {
    outline: 2px solid var(--accent-blue, #1a73e8);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .hamburger-icon span {
        background: var(--text-primary, #000);
    }
    
    .hamburger-btn {
        border: 2px solid var(--text-primary, #000);
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .hamburger-icon span,
    .sidebar,
    .sidebar-overlay,
    .main-content,
    .hamburger-btn {
        transition: none;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    .hamburger-btn {
        background: var(--bg-elevated-dark, #2d2d2d);
        border-color: var(--border-primary-dark, #404040);
    }
    
    .top-bar {
        background: var(--bg-elevated-dark, #2d2d2d);
        border-color: var(--border-primary-dark, #404040);
    }
    
    .sidebar {
        background: var(--bg-elevated-dark, #2d2d2d);
        border-color: var(--border-primary-dark, #404040);
    }
}