/* ============================================
   NAVIGATION.CSS - Навигация и меню
   iOS-inspired navigation with glass effects
   ============================================ */

/* ========== MAIN NAVIGATION ========== */

.ios-nav {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--glass-border);
    position: sticky;
    top: 0;
    z-index: var(--z-sticky);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.05);
    transition: all var(--transition-base);
}

/* Navigation Header */
.nav-header {
    padding: var(--space-lg) var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--glass-border);
}

.nav-header h1 {
    font-size: var(--text-2xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.nav-header h1 i {
    color: var(--ios-blue);
    font-size: var(--text-xl);
}

/* Navigation Status */
.nav-status {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* Navigation Links Container */
.nav-links {
    display: flex;
    overflow-x: auto;
    padding: 0 var(--space-md);
    scrollbar-width: none;
}

.nav-links::-webkit-scrollbar {
    display: none;
}

/* Navigation Link Item */
.nav-link {
    flex: 0 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-md) var(--space-xl);
    text-decoration: none;
    color: var(--text-secondary);
    transition: all var(--transition-base);
    border-bottom: 2px solid transparent;
    position: relative;
}

.nav-link:hover {
    color: var(--ios-blue);
    background: rgba(0, 122, 255, 0.1);
    border-radius: 10px;
    transform: translateY(-1px);
}

.nav-link.active {
    color: var(--ios-blue);
    border-bottom-color: var(--ios-blue);
    font-weight: var(--font-semibold);
}

.nav-link i {
    font-size: var(--text-xl);
    margin-bottom: var(--space-xs);
}

.nav-link span {
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    letter-spacing: 0.3px;
}

/* Badge on Nav Link */
.nav-link .badge {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    padding: 2px 6px;
    font-size: 10px;
}

/* ========== SIDEBAR NAVIGATION ========== */

.sidebar-nav {
    width: 260px;
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    background: rgba(255, 255, 255, 0.75);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--glass-border);
    overflow-y: auto;
    z-index: var(--z-fixed);
    transition: transform var(--transition-base);
}

.sidebar-nav.collapsed {
    transform: translateX(-100%);
}

.sidebar-header {
    padding: var(--space-xl);
    border-bottom: 1px solid var(--glass-border);
}

.sidebar-header h2 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--text-primary);
}

.sidebar-menu {
    padding: var(--space-md);
}

.sidebar-menu-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    margin-bottom: var(--space-xs);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-weight: var(--font-medium);
}

.sidebar-menu-item:hover {
    background: rgba(0, 122, 255, 0.1);
    color: var(--ios-blue);
}

.sidebar-menu-item.active {
    background: var(--ios-blue);
    color: var(--text-inverted);
}

.sidebar-menu-item i {
    font-size: var(--text-lg);
    width: 24px;
    text-align: center;
}

/* Sidebar Section */
.sidebar-section {
    margin-top: var(--space-xl);
    padding: 0 var(--space-md);
}

.sidebar-section-title {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-tertiary);
    padding: var(--space-sm) var(--space-lg);
    margin-bottom: var(--space-xs);
}

/* ========== BREADCRUMBS ========== */

.breadcrumbs {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) 0;
    font-size: var(--text-sm);
}

.breadcrumb-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.breadcrumb-item:hover {
    color: var(--ios-blue);
}

.breadcrumb-item.active {
    color: var(--text-primary);
    font-weight: var(--font-medium);
}

.breadcrumb-separator {
    color: var(--text-tertiary);
}

/* ========== TABS ========== */

.tabs {
    display: flex;
    border-bottom: 1px solid var(--border-light);
    gap: var(--space-sm);
    overflow-x: auto;
}

.tab-item {
    padding: var(--space-md) var(--space-xl);
    color: var(--text-secondary);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    white-space: nowrap;
    font-weight: var(--font-medium);
    cursor: pointer;
}

.tab-item:hover {
    color: var(--ios-blue);
    background: rgba(0, 122, 255, 0.05);
}

.tab-item.active {
    color: var(--ios-blue);
    border-bottom-color: var(--ios-blue);
}

/* ========== PAGINATION ========== */

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-xl) 0;
}

.page-item {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    padding: 0 var(--space-md);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    text-decoration: none;
    font-weight: var(--font-medium);
    transition: all var(--transition-fast);
}

.page-item:hover {
    background: rgba(0, 122, 255, 0.1);
    border-color: var(--ios-blue);
    color: var(--ios-blue);
}

.page-item.active {
    background: var(--ios-blue);
    border-color: var(--ios-blue);
    color: var(--text-inverted);
}

.page-item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

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

.dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dropdown-toggle:hover {
    background: var(--glass-bg-hover);
}

.dropdown-menu {
    position: absolute;
    top: calc(100% + var(--space-xs));
    left: 0;
    min-width: 200px;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    z-index: var(--z-dropdown);
}

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

.dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.dropdown-item:hover {
    background: rgba(0, 122, 255, 0.1);
    color: var(--ios-blue);
}

.dropdown-item i {
    font-size: var(--text-md);
    width: 20px;
}

.dropdown-divider {
    height: 1px;
    margin: var(--space-xs) 0;
    background: var(--border-light);
}

/* ========== HAMBURGER MENU ========== */

.hamburger {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: var(--space-sm);
    background: transparent;
    border: none;
    cursor: pointer;
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.hamburger.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

.hamburger.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -6px);
}

/* ========== MOBILE MENU ========== */

.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    z-index: var(--z-modal);
    padding: var(--space-2xl);
    transform: translateX(-100%);
    transition: transform var(--transition-base);
}

.mobile-menu.active {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2xl);
}

.mobile-menu-items {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.mobile-menu-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-weight: var(--font-medium);
}

.mobile-menu-item:hover,
.mobile-menu-item.active {
    background: var(--ios-blue);
    color: var(--text-inverted);
}

/* ========== RESPONSIVE DESIGN ========== */

@media (max-width: 1024px) {
    .sidebar-nav {
        width: 240px;
    }
}

@media (max-width: 768px) {
    .nav-header {
        padding: var(--space-md) var(--space-lg);
    }
    
    .nav-header h1 {
        font-size: var(--text-xl);
    }
    
    .nav-links {
        justify-content: space-around;
        padding: 0 var(--space-sm);
    }
    
    .nav-link {
        padding: var(--space-md) var(--space-lg);
        min-width: 70px;
    }
    
    .nav-link span {
        font-size: 10px;
    }
    
    .hamburger {
        display: flex;
    }
    
    .sidebar-nav {
        transform: translateX(-100%);
    }
    
    .sidebar-nav.show {
        transform: translateX(0);
    }
}

@media (max-width: 480px) {
    .nav-link {
        padding: var(--space-sm) var(--space-md);
    }
    
    .nav-link i {
        font-size: var(--text-lg);
    }
    
    .nav-link span {
        display: none;
    }
}

/* ========== DARK MODE ========== */

@media (prefers-color-scheme: dark) {
    .ios-nav,
    .sidebar-nav,
    .dropdown-menu {
        background: rgba(28, 28, 30, 0.8);
        border-color: rgba(255, 255, 255, 0.12);
    }
    
    .mobile-menu {
        background: rgba(28, 28, 30, 0.9);
    }
    
    .mobile-menu-item {
        background: rgba(44, 44, 46, 0.5);
    }
}

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

.nav-link:focus,
.sidebar-menu-item:focus,
.tab-item:focus,
.dropdown-toggle:focus {
    outline: 2px solid var(--ios-blue);
    outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
    .nav-link,
    .sidebar-menu-item,
    .tab-item,
    .dropdown-menu,
    .mobile-menu {
        transition: none;
    }
}