/* ================================
   HEADER & NAVIGATION
   ================================ */

header {
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    background: var(--glass-bg-header);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: var(--btn-border-width) solid var(--border-medium);
    box-shadow: var(--shadow-sm);
    transition: background 0.3s ease;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 70px;
}

/* Mobile responsive navigation */
@media (max-width: 768px) {
    header {
        padding: var(--spacing-md) 0;
    }
    
    .header-container {
        padding: 0 var(--spacing-md);
    }
    
    .header-logo {
        max-width: 120px;
    }
    
    /* Hide desktop nav completely on mobile */
    nav {
        display: none !important;
    }
    
    /* Show mobile menu elements */
    .mobile-menu-toggle {
        display: block !important;
        background: var(--brand-primary);
        border: none;
        color: white;
        padding: 8px 12px;
        border-radius: 4px;
        cursor: pointer;
        font-size: 1.2rem;
    }
    
    .mobile-menu-toggle:hover {
        background: var(--brand-primary-dark, #1565c0);
    }
}

/* Mobile Menu Styles */
.mobile-menu-toggle {
    display: none;
    background: var(--brand-primary);
    border: none;
    color: white;
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1.2rem;
    touch-action: manipulation; /* Prevent double-tap zoom and other gestures */
}

.mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(0, 0, 0, 0.3);
    z-index: 1050;
    touch-action: none; /* Disable all touch gestures on overlay */
}

.mobile-overlay.active {
    display: block;
}

.mobile-nav-menu {
    position: fixed;
    top: 0;
    right: -280px;
    width: 280px;
    height: 100vh;
    background: white;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    z-index: 1051;
    transition: right 0.3s ease;
    padding: 1rem;
    overflow-y: auto;
    overflow-x: hidden; /* Prevent any horizontal scroll within menu */
    touch-action: pan-y; /* Only allow vertical scrolling */
}

.mobile-nav-menu.active {
    right: 0;
}

.mobile-nav-header {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
    margin-bottom: 1rem;
}

.mobile-nav-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: #000;
    padding: 8px;
}

.mobile-nav-close:hover {
    background: #f5f5f5;
}

.mobile-nav-links {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mobile-nav-links a {
    display: block;
    padding: 0.75rem 1rem;
    color: #000;
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid #eee;
}

.mobile-nav-links a:hover {
    background: #f5f5f5;
}

/* Header Logo */
.logo-link {
    all: unset;
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    cursor: pointer;
}

.logo-link:hover {
    transform: scale(1.02);
    transition: transform 0.2s ease;
}

.header-logo {
    max-width: 180px;
    height: auto;
    display: block;
}

/* Desktop Navigation */
nav {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

/* Base Navigation Item Styles */
nav a,
.dropdown-toggle {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: var(--btn-font-weight);
    padding: var(--btn-padding-y) var(--btn-padding-x);
    background: white;
    border-radius: var(--radius-sm);
    border: var(--btn-border-width) solid var(--border-strong);
    display: inline-block;
    cursor: pointer;
    transition: var(--btn-transition);
    white-space: nowrap;
}

/* Desktop navigation layout */
@media (min-width: 769px) {
    nav {
        display: inline-block;
        margin-top: 0;
    }
    
    nav a {
        display: inline-block;
        margin: 0 var(--spacing-sm);
    }
    
    .header-logo {
        max-width: 200px;
        margin-bottom: 10px;
    }
}

/* Disable dropdown for direct links */
.dropdown-toggle.no-dropdown {
    cursor: pointer;
}

.dropdown-toggle.no-dropdown:hover {
    color: var(--brand-secondary);
    background: rgba(0, 149, 217, 0.1);
    border-color: var(--brand-secondary);
}

.dropdown-toggle.no-dropdown i {
    display: none;
}

nav a:hover,
.dropdown-toggle:hover {
    text-decoration: none;
}

nav a.active,
.dropdown-toggle.active {
    background: var(--brand-primary);
    color: var(--white);
    font-weight: 600;
    box-shadow: var(--shadow-brand);
}

/* Navigation Active States */
nav a.nav-active {
    background-color: var(--brand-primary);
    color: var(--white);
    padding: 8px 12px;
    border-radius: 4px;
    font-weight: 600;
}



/* ================================
   DROPDOWN MENU
   ================================ */

/* Dropdown Container */
.dropdown {
    position: relative;
    display: inline-block;
}

/* Disable dropdown functionality */
.dropdown.no-dropdown .dropdown-menu {
    display: none !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

.dropdown-toggle i {
    margin-left: var(--spacing-xs);
    font-size: var(--font-size-xs);
}

.dropdown-menu {
    opacity: 0;
    visibility: hidden;
    position: absolute;
    top: 100%;
    left: var(--spacing-sm);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    min-width: var(--sidebar-min-width);
    z-index: var(--z-dropdown);
    margin-top: var(--spacing-xs);
    transform: translateY(-10px);
    transition: var(--btn-transition);
    pointer-events: none;
}

/* Dropdown Menu Button Overrides */
.dropdown-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 400;
    margin: 0;
    background: none;
    border-radius: 0;
    box-shadow: none;
    border: none;
    border-bottom: var(--btn-border-width) solid var(--border-light);
    cursor: pointer;
    transition: var(--transition-base);
}

.dropdown-menu a:hover {
    background: var(--glass-bg-light);
    color: var(--brand-primary);
    text-decoration: none;
}

.dropdown-menu a:last-child {
    border-bottom: none;
}

.dropdown-menu a:first-child {
    border-top-left-radius: var(--radius-md);
    border-top-right-radius: var(--radius-md);
}

.dropdown-menu a:last-child {
    border-bottom: none;
    border-bottom-left-radius: var(--radius-md);
    border-bottom-right-radius: var(--radius-md);
}

/* Dropdown Menu Animation States */
.dropdown .dropdown-menu.dropdown-menu-show {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.dropdown .dropdown-menu.dropdown-menu-hide {
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    pointer-events: none;
}

/* ================================
   FOOTER
   ================================ */

footer {
    background: var(--glass-bg-footer);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-top: var(--btn-border-width) solid var(--border-strong);
    color: var(--text-secondary);
    text-align: center;
    padding: var(--spacing-2xl);
    margin-top: var(--spacing-3xl);
    box-shadow: 0 -1px 3px rgba(0, 0, 0, 0.1);
}

footer p {
    color: var(--text-secondary);
    margin: 0;
}

/* Footer Social Links */
.social-link {
    color: var(--brand-primary);
    text-decoration: none;
    margin-right: var(--spacing-lg);
    transition: var(--transition-base);
    font-weight: var(--btn-font-weight);
    font-size: var(--font-size-caption);
}

.social-link:hover {
    color: var(--brand-secondary);
    text-decoration: none;
    transform: translateY(-1px);
}

.social-link i {
    margin-right: var(--spacing-xs);
    width: 16px;
    text-align: center;
    color: inherit;
}