/* ============================================
   NAVIGATION CSS - Header, Footer, Menu
   ============================================ */

/* Site Header */
.site-header {
    background-color: var(--color-background);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-container {
    width: 100%;
}

.header-top {
    background-color: var(--color-surface);
    padding: var(--spacing-sm) 0;
    font-size: var(--font-size-sm);
}

.header-credentials {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
    align-items: center;
}

@media (max-width: 1024px) {
    .header-credentials {
        gap: var(--spacing-sm);
    }
}

.credential-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-secondary);
}

.credential-item .icon {
    font-size: var(--font-size-base);
}

/* Main Navigation */
.main-navigation {
    background-color: var(--color-background);
    padding: var(--spacing-sm) 0;
    position: relative;
    overflow: visible;
}

.main-navigation .container {
    position: relative;
    overflow: visible;
}

@media (min-width: 768px) {
    .main-navigation {
        padding: var(--spacing-md) 0;
    }
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    flex-wrap: nowrap;
    position: relative;
    overflow: visible;
}

.logo {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    text-decoration: none;
    flex-shrink: 0;
    display: flex;
    align-items: center;
}

.logo-image {
    height: 40px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
}

.logo-text {
    font-family: var(--font-family-heading);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

@media (min-width: 768px) {
    .logo {
        font-size: var(--font-size-2xl);
    }
    
    .logo-image {
        height: 50px;
        max-width: 220px;
    }
    
    .logo-text {
        font-size: var(--font-size-2xl);
    }
}

.logo:hover {
    text-decoration: none;
    color: var(--color-primary-dark);
}

.logo:hover .logo-image {
    opacity: 0.9;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--spacing-xs);
    align-items: center;
    flex-wrap: nowrap;
    flex: 1;
    min-width: 0;
    overflow: visible;
    position: relative;
}

.nav-menu a {
    padding: var(--spacing-sm) var(--spacing-sm);
    color: var(--color-text);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    transition: color var(--transition-base);
    border-radius: var(--radius-md);
    white-space: nowrap;
    flex-shrink: 0;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--color-primary);
    background-color: var(--color-surface);
    text-decoration: none;
}

.nav-text-short {
    display: none;
}

@media (max-width: 1200px) {
    .nav-text-full {
        display: none;
    }
    
    .nav-text-short {
        display: inline;
    }
}

@media (max-width: 900px) {
    .nav-text-short {
        display: none;
    }
    
    .nav-text-full {
        display: inline;
    }
}

/* Dropdown Menu */
.dropdown {
    position: relative;
    z-index: 100;
}

.dropdown-arrow {
    font-size: var(--font-size-xs);
    margin-left: var(--spacing-xs);
    display: inline-block;
    transition: transform var(--transition-base);
}

.dropdown:hover .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + var(--spacing-xs));
    left: 0;
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    list-style: none;
    padding: var(--spacing-sm);
    margin: 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    z-index: 1001;
    white-space: nowrap;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--radius-sm);
}

.dropdown-menu a:hover {
    background-color: var(--color-surface);
    color: var(--color-primary);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: all var(--transition-base);
}

/* Nav Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.login-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--color-surface);
    color: var(--color-primary);
    text-decoration: none;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    font-size: var(--font-size-lg);
}

.login-icon:hover,
.login-icon:focus-visible {
    background-color: var(--color-primary-light);
    color: var(--color-background);
    border-color: var(--color-primary);
    text-decoration: none;
}

.login-icon .icon-person {
    line-height: 1;
}

/* User Menu Nav */
.user-menu-nav {
    position: relative;
}

.user-menu-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: none;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    transition: all var(--transition-base);
    font-size: var(--font-size-sm);
    color: var(--color-text);
}

.user-menu-toggle:hover {
    background-color: var(--color-surface);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.user-icon {
    font-size: var(--font-size-base);
}

.user-name-nav {
    font-weight: var(--font-weight-medium);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.user-dropdown-menu {
    position: absolute;
    top: calc(100% + var(--spacing-xs));
    right: 0;
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    list-style: none;
    padding: var(--spacing-sm);
    margin: 0;
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    z-index: var(--z-dropdown);
}

.user-menu-nav:hover .user-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.user-dropdown-menu li {
    margin: 0;
}

.user-dropdown-menu a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-base);
}

.user-dropdown-menu a:hover,
.user-dropdown-menu a.active {
    background-color: var(--color-surface);
    color: var(--color-primary);
}

.user-dropdown-menu .menu-icon {
    font-size: var(--font-size-base);
    width: 20px;
    text-align: center;
}

.dropdown-divider {
    height: 1px;
    background-color: var(--color-border);
    margin: var(--spacing-xs) 0;
    padding: 0;
}

.login-link {
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-primary);
    color: #ffffff;
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    transition: background-color var(--transition-base);
    white-space: nowrap;
}

.login-link:hover {
    background-color: var(--color-primary-dark);
    color: #ffffff;
    text-decoration: none;
}

/* Language Toggle */
.lang-toggle {
    background: var(--color-primary);
    color: #fff;
    border: none;
    cursor: pointer;
    padding: 4px 10px;
    font-size: var(--font-size-sm);
    font-weight: 700;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    flex-shrink: 0;
    letter-spacing: 0.5px;
}

.lang-toggle:hover {
    background: var(--color-primary-dark);
    transform: scale(1.05);
}

/* Dark Mode Toggle */
.dark-mode-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    font-size: var(--font-size-xl);
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

.dark-mode-toggle:hover {
    transform: scale(1.1);
}

/* Site Footer */
.site-footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
    margin-top: var(--spacing-4xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: var(--spacing-md);
    color: var(--color-primary);
}

.footer-section p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.footer-links a:hover {
    color: var(--color-primary);
}

.footer-certifications {
    list-style: none;
    padding: 0;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.footer-social {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--color-border);
    color: var(--color-text-secondary);
    transition: all 0.3s ease;
}

.social-link:hover {
    background: var(--color-primary);
    color: #fff;
    transform: translateY(-2px);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-md);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.footer-legal p {
    margin-bottom: var(--spacing-xs);
}

.footer-powered {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
}

.powered-by-link {
    display: flex;
    align-items: center;
    transition: opacity 0.3s ease;
}

.powered-by-link:hover {
    opacity: 0.8;
}

.powered-logo {
    height: 18px;
    width: auto;
}

.powered-logo-dark {
    display: none;
}

[data-theme="dark"] .powered-logo-light {
    display: none;
}

[data-theme="dark"] .powered-logo-dark {
    display: block;
}

/* Responsive Navigation */
@media (max-width: 1200px) {
    .nav-menu {
        gap: var(--spacing-xs);
        overflow-x: auto;
        overflow-y: visible;
        scrollbar-width: none;
        -ms-overflow-style: none;
    }
    
    .nav-menu::-webkit-scrollbar {
        display: none;
    }
    
    .nav-menu a {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .user-name-nav {
        max-width: 80px;
    }
    
    .dropdown-menu {
        z-index: 1001;
    }
}

@media (max-width: 1024px) {
    .nav-menu {
        gap: var(--spacing-xs);
    }
    
    .nav-menu a {
        font-size: var(--font-size-xs);
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .logo {
        font-size: var(--font-size-lg);
    }
    
    .user-name-nav {
        display: none;
    }
    
    .user-menu-toggle {
        padding: var(--spacing-xs);
    }
}

@media (max-width: 900px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        left: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--color-background);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-xl);
        box-shadow: var(--shadow-xl);
        transition: left var(--transition-base);
        z-index: var(--z-fixed);
        overflow-y: auto;
        gap: 0;
        flex: none;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-menu a {
        display: block;
        width: 100%;
        padding: var(--spacing-md);
        font-size: var(--font-size-base);
        white-space: normal;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: var(--shadow-sm);
        border: 1px solid var(--color-border);
        margin-top: var(--spacing-xs);
        margin-left: var(--spacing-md);
        padding: var(--spacing-sm);
        min-width: auto;
        display: none;
    }
    
    .dropdown-menu[style*="block"] {
        display: block !important;
    }
    
    .user-dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: var(--shadow-md);
        border: 1px solid var(--color-border);
        margin-top: var(--spacing-sm);
        min-width: auto;
        display: none;
    }
    
    .user-dropdown-menu[style*="block"],
    .user-menu-nav:hover .user-dropdown-menu {
        display: block !important;
    }
    
    .nav-actions {
        flex-direction: row;
        justify-content: flex-end;
        gap: var(--spacing-sm);
        width: 100%;
    }
    
    .user-menu-toggle {
        width: 100%;
        justify-content: center;
    }
    
    .nav-actions .login-icon {
        width: 48px;
        height: 48px;
        font-size: var(--font-size-xl);
    }

    .user-name-nav {
        display: inline;
        max-width: none;
    }
}

@media (max-width: 767px) {
    .mobile-menu-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        left: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--color-background);
        flex-direction: column;
        align-items: flex-start;
        padding: var(--spacing-xl);
        box-shadow: var(--shadow-xl);
        transition: left var(--transition-base);
        z-index: var(--z-fixed);
        overflow-y: auto;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        width: 100%;
    }
    
    .nav-menu a {
        display: block;
        width: 100%;
        padding: var(--spacing-md);
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        padding-left: var(--spacing-lg);
    }
    
    .header-credentials {
        font-size: var(--font-size-xs);
        gap: var(--spacing-sm);
    }
    
    .header-credentials .credential-item span:not(.icon) {
        display: none;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}