/* Enhanced Blog Navigation Styles */

/* Main Navigation */
.blog-nav-enhanced {
    background: var(--fluent-color-neutral-0);
    border-bottom: 1px solid var(--fluent-color-neutral-30);
    box-shadow: var(--fluent-shadow-depth-2);
    position: sticky;
    top: 0;
    z-index: 10;
    /* Уменьшен z-index чтобы не перекрывать другие элементы сайта */
}

/* Ensure content doesn't overlap with opaque navigation */
.blog-container {
    padding-top: 20px; /* Small gap to prevent any visual overlap */
}

.nav-container-enhanced {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--fluent-spacing-l);
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 80px;
    gap: var(--fluent-spacing-xl);
}

/* Brand/Logo */
.nav-brand {
    flex-shrink: 0;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: var(--fluent-spacing-s);
    color: var(--fluent-color-neutral-140);
    text-decoration: none;
    font-weight: var(--fluent-font-weight-semibold);
    font-size: var(--fluent-font-size-l);
    padding: var(--fluent-spacing-s) var(--fluent-spacing-m);
    border-radius: var(--fluent-radius-m);
    transition: all 0.3s ease;
}

.brand-link:hover {
    color: var(--fluent-color-brand-120);
    background: var(--fluent-color-brand-10);
}

.brand-link.active {
    color: var(--fluent-color-brand-120);
    background: var(--fluent-color-brand-20);
}

.brand-link i {
    font-size: var(--fluent-font-size-xl);
    color: var(--fluent-color-brand-100);
}

/* Centered Search */
.nav-search-center {
    flex: 1;
    max-width: 600px;
    margin: 0 auto;
}

.search-form-enhanced {
    width: 100%;
}

.search-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    background: var(--fluent-color-neutral-10);
    border: 2px solid var(--fluent-color-neutral-20);
    border-radius: var(--fluent-radius-xl);
    padding: var(--fluent-spacing-s);
    transition: all 0.3s ease;
    box-shadow: var(--fluent-shadow-depth-2);
}

.search-input-wrapper:focus-within {
    border-color: var(--fluent-color-brand-100);
    box-shadow: var(--fluent-shadow-depth-8), 0 0 0 3px rgba(0, 120, 212, 0.1);
    transform: translateY(-1px);
}

.search-icon {
    color: var(--fluent-color-neutral-100);
    font-size: var(--fluent-font-size-l);
    margin-right: var(--fluent-spacing-s);
    transition: color 0.2s ease;
}

.search-input-wrapper:focus-within .search-icon {
    color: var(--fluent-color-brand-100);
}

.search-input-enhanced {
    flex: 1;
    border: none;
    background: transparent;
    font-size: var(--fluent-font-size-m);
    color: var(--fluent-color-neutral-140);
    outline: none;
    padding: var(--fluent-spacing-xs) 0;
}

.search-input-enhanced::placeholder {
    color: var(--fluent-color-neutral-100);
    opacity: 0.8;
}

.search-submit-btn {
    background: var(--fluent-color-brand-100);
    color: var(--fluent-color-neutral-0);
    border: none;
    border-radius: var(--fluent-radius-m);
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    margin-left: var(--fluent-spacing-s);
}

.search-submit-btn:hover {
    background: var(--fluent-color-brand-110);
    transform: scale(1.05);
}

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

/* Categories Dropdown */
.nav-categories-wrapper {
    position: relative;
    flex-shrink: 0;
}

.categories-toggle {
    display: flex;
    align-items: center;
    gap: var(--fluent-spacing-s);
    background: var(--fluent-color-neutral-10);
    border: 2px solid var(--fluent-color-neutral-20);
    border-radius: var(--fluent-radius-xl);
    padding: var(--fluent-spacing-s) var(--fluent-spacing-m);
    cursor: pointer;
    font-size: var(--fluent-font-size-s);
    font-weight: var(--fluent-font-weight-medium);
    color: var(--fluent-color-neutral-120);
    transition: all 0.3s ease;
    box-shadow: var(--fluent-shadow-depth-2);
}

.categories-toggle:hover {
    border-color: var(--fluent-color-brand-50);
    background: var(--fluent-color-brand-10);
    color: var(--fluent-color-brand-120);
}

.categories-toggle[aria-expanded="true"] {
    border-color: var(--fluent-color-brand-100);
    background: var(--fluent-color-brand-20);
    color: var(--fluent-color-brand-120);
}

.categories-toggle[aria-expanded="true"] .dropdown-arrow {
    transform: rotate(180deg);
}

.dropdown-arrow {
    font-size: var(--fluent-font-size-xs);
    transition: transform 0.3s ease;
    color: var(--fluent-color-neutral-100);
}

.categories-toggle:hover .dropdown-arrow {
    color: var(--fluent-color-brand-100);
}

/* Categories Panel */
.categories-panel {
    position: absolute;
    top: calc(100% + var(--fluent-spacing-m));
    right: 0;
    width: 400px;
    max-width: calc(100vw - var(--fluent-spacing-xl));
    background: var(--fluent-color-neutral-0);
    border: 2px solid var(--fluent-color-neutral-30);
    border-radius: var(--fluent-radius-xl);
    box-shadow:
        var(--fluent-shadow-depth-16),
        0 0 0 1px rgba(0, 0, 0, 0.1),
        0 20px 40px rgba(0, 0, 0, 0.15);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px) scale(0.95);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
    /* Убираем backdrop-filter для лучшего контраста */
    /* backdrop-filter: blur(20px); */
    /* -webkit-backdrop-filter: blur(20px); */
}

.categories-panel[aria-hidden="false"] {
    opacity: 1;
    visibility: visible;
    transform: translateY(0) scale(1);
}

.categories-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--fluent-spacing-xl) var(--fluent-spacing-xl) var(--fluent-spacing-l);
    border-bottom: 1px solid var(--fluent-color-neutral-20);
}

.categories-header h3 {
    margin: 0;
    font-size: var(--fluent-font-size-l);
    font-weight: var(--fluent-font-weight-semibold);
    color: var(--fluent-color-neutral-140);
}

.categories-close {
    background: none;
    border: none;
    color: var(--fluent-color-neutral-100);
    cursor: pointer;
    padding: var(--fluent-spacing-s);
    border-radius: var(--fluent-radius-m);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.categories-close:hover {
    background: var(--fluent-color-neutral-10);
    color: var(--fluent-color-neutral-140);
}

/* Categories Grid */
.categories-grid {
    padding: var(--fluent-spacing-l);
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--fluent-spacing-s);
    max-height: 500px;
    overflow-y: auto;
}

/* Category Cards */
.category-card {
    display: flex;
    align-items: center;
    gap: var(--fluent-spacing-m);
    padding: var(--fluent-spacing-m);
    border-radius: var(--fluent-radius-l);
    text-decoration: none;
    color: inherit;
    transition: all 0.2s ease;
    border: 1px solid transparent;
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 120, 212, 0.05) 0%, rgba(0, 120, 212, 0.02) 100%);
    opacity: 0;
    transition: opacity 0.2s ease;
}

.category-card:hover {
    background: var(--fluent-color-brand-5);
    border-color: var(--fluent-color-brand-30);
    transform: translateX(4px);
}

.category-card:hover::before {
    opacity: 1;
}

.category-card.active {
    background: var(--fluent-color-brand-10);
    border-color: var(--fluent-color-brand-50);
    color: var(--fluent-color-brand-120);
}

.category-card.active::before {
    background: linear-gradient(135deg, rgba(0, 120, 212, 0.1) 0%, rgba(0, 120, 212, 0.05) 100%);
    opacity: 1;
}

.category-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--fluent-radius-l);
    background: var(--fluent-color-brand-10);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    color: var(--fluent-color-brand-100);
    font-size: var(--fluent-font-size-xl);
    transition: all 0.2s ease;
}

.category-card:hover .category-icon {
    background: var(--fluent-color-brand-20);
    color: var(--fluent-color-brand-110);
    transform: scale(1.1);
}

.category-card.active .category-icon {
    background: var(--fluent-color-brand-100);
    color: var(--fluent-color-neutral-0);
}

.category-content {
    flex: 1;
    min-width: 0;
}

.category-content h4 {
    margin: 0 0 var(--fluent-spacing-xs) 0;
    font-size: var(--fluent-font-size-m);
    font-weight: var(--fluent-font-weight-semibold);
    color: var(--fluent-color-neutral-140);
    line-height: var(--fluent-line-height-tight);
}

.category-card:hover .category-content h4 {
    color: var(--fluent-color-brand-120);
}

.category-card.active .category-content h4 {
    color: var(--fluent-color-brand-120);
}

.category-content p {
    margin: 0 0 var(--fluent-spacing-xs) 0;
    font-size: var(--fluent-font-size-s);
    color: var(--fluent-color-neutral-120);
    line-height: var(--fluent-line-height-relaxed);
}

.category-count {
    display: inline-block;
    background: var(--fluent-color-neutral-20);
    color: var(--fluent-color-neutral-120);
    padding: var(--fluent-spacing-xs) var(--fluent-spacing-s);
    border-radius: var(--fluent-radius-m);
    font-size: var(--fluent-font-size-xs);
    font-weight: var(--fluent-font-weight-medium);
}

.category-card:hover .category-count {
    background: var(--fluent-color-brand-20);
    color: var(--fluent-color-brand-120);
}

.category-card.active .category-count {
    background: var(--fluent-color-brand-50);
    color: var(--fluent-color-brand-130);
}

/* Overlay */
.categories-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 50;
}

.categories-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Content dimming effect */
body.categories-panel-open .blog-container {
    filter: brightness(0.85) contrast(0.95) saturate(0.9);
    transition: filter 0.3s ease;
    pointer-events: none;
}

body.categories-panel-open .blog-nav-enhanced {
    pointer-events: auto;
}

body.categories-panel-open .categories-panel {
    pointer-events: auto;
}

/* Scrollbar Styling */
.categories-grid::-webkit-scrollbar {
    width: 6px;
}

.categories-grid::-webkit-scrollbar-track {
    background: var(--fluent-color-neutral-10);
    border-radius: var(--fluent-radius-m);
}

.categories-grid::-webkit-scrollbar-thumb {
    background: var(--fluent-color-neutral-40);
    border-radius: var(--fluent-radius-m);
}

.categories-grid::-webkit-scrollbar-thumb:hover {
    background: var(--fluent-color-neutral-60);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .categories-panel {
        width: 350px;
    }
}

@media (max-width: 768px) {
    .blog-nav-enhanced {
        border-bottom: 1px solid var(--fluent-color-neutral-30);
        box-shadow: var(--fluent-shadow-depth-2);
    }

    .nav-container-enhanced {
        padding: 0 var(--fluent-spacing-m);
        min-height: 70px;
        flex-wrap: wrap;
        gap: var(--fluent-spacing-m);
    }

    .nav-brand {
        order: 1;
        flex: 0 0 auto;
    }

    .nav-search-center {
        order: 3;
        flex: 1 1 100%;
        max-width: none;
        margin: 0;
    }

    .nav-categories-wrapper {
        order: 2;
        flex: 0 0 auto;
    }

    .search-input-wrapper {
        max-width: none;
    }

    .categories-panel {
        position: fixed;
        top: 0;
        right: 0;
        left: 0;
        bottom: 0;
        width: 100%;
        max-width: none;
        border-radius: 0;
        transform: translateX(100%);
        opacity: 1;
        visibility: visible;
        z-index: 200;
    }

    .categories-panel[aria-hidden="false"] {
        transform: translateX(0);
    }

    .categories-grid {
        padding: var(--fluent-spacing-xl);
        max-height: calc(100vh - 120px);
    }

    .categories-overlay {
        display: none; /* Not needed on mobile since panel covers full screen */
    }

    .brand-link span {
        display: none;
    }

    .brand-link {
        padding: var(--fluent-spacing-s);
    }

    /* Mobile-specific adjustments */
    .categories-header {
        position: sticky;
        top: 0;
        background: var(--fluent-color-neutral-0);
        z-index: 10;
        border-bottom: 1px solid var(--fluent-color-neutral-20);
    }

    .category-card {
        padding: var(--fluent-spacing-l);
    }

    .category-content h4 {
        font-size: var(--fluent-font-size-l);
    }
}

@media (max-width: 480px) {
    .nav-container-enhanced {
        padding: 0 var(--fluent-spacing-s);
        min-height: 60px;
    }

    .search-input-enhanced {
        font-size: var(--fluent-font-size-s);
    }

    .categories-toggle span {
        display: none;
    }

    .categories-toggle {
        padding: var(--fluent-spacing-s);
        min-width: 44px;
        justify-content: center;
    }
}

/* Focus States for Accessibility */
.categories-toggle:focus,
.categories-close:focus,
.category-card:focus {
    outline: 2px solid var(--fluent-color-brand-100);
    outline-offset: 2px;
}

.search-input-enhanced:focus {
    outline: none;
}

/* Animation Classes */
.nav-slide-in {
    animation: slideInFromTop 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.categories-panel-slide-in {
    animation: slideInFromRight 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideInFromTop {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInFromRight {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    .categories-panel {
        border: 2px solid;
    }

    .category-card {
        border: 1px solid;
    }

    .search-input-wrapper {
        border: 2px solid;
    }
}

/* Loading States */
.category-card.loading {
    opacity: 0.7;
    pointer-events: none;
    position: relative;
}

.category-card.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--fluent-color-brand-100);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Enhanced Focus States */
.categories-toggle:focus-visible,
.categories-close:focus-visible,
.category-card:focus-visible {
    outline: 2px solid var(--fluent-color-brand-100);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(0, 120, 212, 0.1);
}

/* Improved Hover States */
.category-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.category-card:hover {
    transform: translateX(2px) scale(1.02);
}

/* Backdrop Blur Support (Alternative styling) */
@supports (backdrop-filter: blur(20px)) {
    .categories-panel.alternative-style {
        background: rgba(255, 255, 255, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border: 2px solid rgba(0, 120, 212, 0.2);
    }
}

/* Alternative panel styling for better contrast */
.categories-panel.solid-background {
    background: var(--fluent-color-neutral-0);
    border: 2px solid var(--fluent-color-neutral-40);
    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.15),
        0 0 0 1px rgba(0, 0, 0, 0.1);
}

/* Enhanced contrast mode */
.categories-panel.high-contrast {
    background: var(--fluent-color-neutral-0);
    border: 3px solid var(--fluent-color-neutral-60);
    box-shadow:
        0 25px 50px rgba(0, 0, 0, 0.2),
        0 0 0 1px rgba(0, 0, 0, 0.15);
}

/* Gradient Text Effects */
.brand-link span {
    background: linear-gradient(135deg, var(--fluent-color-brand-120), var(--fluent-color-brand-100));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Smooth Transitions */
* {
    box-sizing: border-box;
}

/* Enhanced Scrollbar for Webkit Browsers */
.categories-grid::-webkit-scrollbar {
    width: 8px;
}

.categories-grid::-webkit-scrollbar-track {
    background: var(--fluent-color-neutral-10);
    border-radius: var(--fluent-radius-m);
}

.categories-grid::-webkit-scrollbar-thumb {
    background: var(--fluent-color-neutral-40);
    border-radius: var(--fluent-radius-m);
    transition: background 0.2s ease;
}

.categories-grid::-webkit-scrollbar-thumb:hover {
    background: var(--fluent-color-neutral-60);
}

/* Firefox Scrollbar */
.categories-grid {
    scrollbar-width: thin;
    scrollbar-color: var(--fluent-color-neutral-40) var(--fluent-color-neutral-10);
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .blog-nav-enhanced *,
    .categories-panel,
    .category-card,
    .categories-toggle,
    .search-input-wrapper {
        transition: none;
        animation: none;
    }

    .categories-panel[aria-hidden="false"] {
        transform: none;
    }

    .category-card:hover {
        transform: none;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    .categories-panel {
        border: 3px solid;
    }

    .category-card {
        border: 2px solid;
    }

    .search-input-wrapper {
        border: 3px solid;
    }

    .categories-toggle {
        border: 3px solid;
    }
}

/* Dark Mode Support (if needed) */
@media (prefers-color-scheme: dark) {
    .categories-panel {
        background: var(--fluent-color-neutral-5);
    }

    .category-card:hover {
        background: var(--fluent-color-neutral-10);
    }
}