/* Unified Navigation System Styles */

/* CSS Variables for consistent navbar height */
:root {
    --navbar-height: 76px;
}

@media (max-width: 767.98px) {
    :root {
        --navbar-height: 70px;
    }
}

/* Enhanced Navbar Styling */
.navbar {
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%) !important;
    z-index: 1030;
    min-height: var(--navbar-height);
    transition: box-shadow 0.3s ease;
}

/* Sticky navbar enhanced shadow on scroll */
.navbar.sticky-top {
    backdrop-filter: blur(10px);
}

.navbar.scrolled {
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    background: linear-gradient(135deg, rgba(0,123,255,0.95) 0%, rgba(0,86,179,0.95) 100%) !important;
}

.navbar-brand {
    font-weight: 600;
    font-size: 1.25rem;
}

.navbar-brand i {
    font-size: 1.5rem;
    margin-right: 8px;
}

/* Navigation Links Enhancement */
.navbar-nav .nav-link {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin: 0 2px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.navbar-nav .nav-link:hover {
    background: rgba(255,255,255,0.1);
    transform: translateY(-1px);
}

.navbar-nav .nav-link.active {
    background: rgba(255,255,255,0.2);
}

.navbar-nav .nav-link i {
    margin-right: 6px;
    font-size: 1.1rem;
}

/* Dropdown Menu Enhancements */
.dropdown-menu {
    border: none;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    border-radius: 12px;
    padding: 0;
    margin-top: 8px;
    min-width: 280px;
    animation: dropdownFadeIn 0.3s ease-out;
}

@keyframes dropdownFadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown-header {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
    color: #495057;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 12px 16px;
    border-radius: 12px 12px 0 0;
    margin-bottom: 0;
}

.dropdown-item {
    padding: 10px 16px;
    transition: all 0.2s ease;
    border-left: 3px solid transparent;
}

.dropdown-item:hover {
    background: linear-gradient(90deg, rgba(0,123,255,0.1), rgba(0,123,255,0.05));
    border-left-color: #007bff;
    transform: translateX(3px);
}

.dropdown-item i {
    width: 20px;
    margin-right: 8px;
    text-align: center;
}

.dropdown-divider {
    margin: 8px 0;
    opacity: 0.1;
}

/* Special Dropdown Styles */
.nearby-share-dropdown,
.room-dropdown {
    min-width: 320px;
}

.nearby-share-dropdown .btn-success {
    background: linear-gradient(45deg, #28a745, #20c997);
    border: none;
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
}

.room-dropdown .btn-info {
    background: linear-gradient(45deg, #17a2b8, #6f42c1);
    border: none;
    box-shadow: 0 4px 15px rgba(23, 162, 184, 0.3);
}

/* Status Areas */
#nearbyShareStatus,
#roomStatus {
    min-height: 20px;
}

#nearbyShareStatus .alert,
#roomStatus .alert {
    padding: 8px 12px;
    margin-bottom: 0;
    font-size: 0.85rem;
    border-radius: 6px;
}

/* Form Controls in Dropdowns */
.dropdown-menu .form-control {
    border-radius: 6px;
    border: 1px solid #e9ecef;
    transition: all 0.2s ease;
}

.dropdown-menu .form-control:focus {
    border-color: #80bdff;
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,0.25);
}

.dropdown-menu .input-group-sm .btn {
    padding: 0.375rem 0.75rem;
    border-radius: 0 6px 6px 0;
}

/* Mobile Extended Menu */
.mobile-extended-menu {
    background: linear-gradient(135deg, rgba(0,123,255,0.05), rgba(0,86,179,0.05));
    border-bottom: 1px solid rgba(0,123,255,0.1);
    display: none;
    transition: all 0.3s ease;
}

.mobile-extended-menu.show {
    display: block;
    animation: mobileMenuSlideDown 0.3s ease-out;
}

@keyframes mobileMenuSlideDown {
    from {
        opacity: 0;
        max-height: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        max-height: 200px;
        transform: translateY(0);
    }
}

.mobile-extended-menu .card {
    border: none;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

/* Responsive Design */
@media (max-width: 991.98px) {
    .navbar-nav {
        padding-top: 1rem;
    }
    
    .navbar-nav .nav-link {
        margin: 2px 0;
    }
    
    .dropdown-menu {
        position: static !important;
        float: none;
        width: auto;
        margin-top: 0;
        background-color: rgba(255,255,255,0.95);
        border: 1px solid rgba(0,0,0,0.1);
        box-shadow: inset 0 1px 3px rgba(0,0,0,0.1);
    }
    
    .dropdown-header {
        background: rgba(0,123,255,0.1);
    }
}

@media (max-width: 767.98px) {
    .navbar-brand {
        font-size: 1.1rem;
    }
    
    .navbar-brand i {
        font-size: 1.2rem;
        margin-right: 6px;
    }
}

/* Animation Utilities */
.btn {
    transition: all 0.2s ease;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.btn:active {
    transform: translateY(0);
}

/* Loading States */
.btn.loading {
    position: relative;
    color: transparent;
}

.btn.loading::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: button-loading-spinner 1s linear infinite;
}

@keyframes button-loading-spinner {
    from {
        transform: rotate(0turn);
    }
    to {
        transform: rotate(1turn);
    }
}

/* Accessibility Improvements */
.nav-link:focus,
.dropdown-item:focus,
.btn:focus {
    outline: 2px solid #80bdff;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .navbar {
        background: #000 !important;
        border-bottom: 2px solid #fff;
    }
    
    .dropdown-menu {
        border: 2px solid #000;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .navbar-nav .nav-link,
    .dropdown-item,
    .btn,
    .dropdown-menu {
        transition: none;
        animation: none;
    }
}