/* Userology Help Center - Brand Theme */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Figtree:wght@400;500;600;700&display=swap');

:root {
    /* Brand Colors - Userology Purple */
    --u-color-primary: #6430F7;
    /* Userology Purple */
    --u-color-primary-dark: #4F26C4;
    --u-color-primary-light: #EDE7FE;

    /* Neutral Scale */
    --u-color-text-main: #0F172A;
    /* Almost Black */
    --u-color-text-muted: #475569;
    /* Dark Gray */
    --u-color-text-light: #94A3B8;
    /* Light Gray */
    --u-color-text-inverse: #FFFFFF;

    /* Backgrounds */
    --u-color-bg-main: #FFFFFF;
    /* Pure White Background */
    --u-color-bg-secondary: #F8FAFC;
    /* Very Light Gray */
    --u-color-bg-card: #FFFFFF;
    --u-color-bg-header: #FFFFFF;

    /* Borders */
    --u-color-border: #E2E8F0;
    --u-color-border-hover: #CBD5E1;

    /* Spacing */
    --u-space-1: 0.25rem;
    --u-space-2: 0.5rem;
    --u-space-3: 0.75rem;
    --u-space-4: 1rem;
    --u-space-5: 1.25rem;
    --u-space-6: 1.5rem;
    --u-space-8: 2rem;
    --u-space-10: 2.5rem;
    --u-space-12: 3rem;
    --u-space-16: 4rem;

    /* Typography */
    --u-font-sans: 'Figtree', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

    /* Shadows - Minimalist */
    --u-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --u-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    --u-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05);

    /* Radius */
    --u-radius-sm: 4px;
    --u-radius-md: 8px;
    --u-radius-lg: 12px;
    --u-radius-xl: 16px;
    --u-radius-full: 9999px;

    /* Transitions */
    --u-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Skip Link - Accessibility */
.skip-link {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--u-color-primary);
    color: var(--u-color-text-inverse);
    padding: var(--u-space-3) var(--u-space-6);
    border-radius: var(--u-radius-md);
    font-weight: 600;
    z-index: 10000;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: var(--u-space-4);
    color: var(--u-color-text-inverse);
    outline: 2px solid var(--u-color-text-inverse);
    outline-offset: 2px;
}

/* Dark Mode Toggle Button */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    padding: 0;
    background: transparent;
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-full);
    cursor: pointer;
    transition: var(--u-transition);
}

.theme-toggle:hover {
    background: var(--u-color-bg-secondary);
    border-color: var(--u-color-border-hover);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
    stroke: var(--u-color-text-main);
}

.theme-toggle .sun-icon {
    display: block;
}

.theme-toggle .moon-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .sun-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: block;
}

/* Reset & Base */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--u-font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--u-color-text-main);
    background-color: var(--u-color-bg-main);
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--u-color-text-main);
    text-decoration: none;
    transition: var(--u-transition);
}

a:hover {
    color: var(--u-color-primary);
}

/* Layout */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--u-space-6);
}

/* Header */
.header {
    background: var(--u-color-bg-header);
    padding: var(--u-space-4) 0;
    position: sticky;
    top: 0;
    z-index: 50;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

.header.scrolled {
    border-bottom-color: var(--u-color-border);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-branding {
    display: flex;
    align-items: center;
    gap: var(--u-space-3);
}

.header-logo {
    height: 32px;
    width: auto;
}

.header-text h1 {
    font-size: 1.125rem;
    font-weight: 700;
    margin: 0;
    letter-spacing: -0.01em;
}

.header-text p {
    display: none;
}

/* Header Actions (Submit Request) */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--u-space-4);
}

/* Header Search Button */
.header-search-btn {
    display: flex;
    align-items: center;
    gap: var(--u-space-2);
    padding: 6px 12px;
    background: var(--u-color-bg-main);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-full);
    cursor: pointer;
    transition: var(--u-transition);
    color: var(--u-color-text-muted);
    font-size: 0.8125rem;
}

.header-search-btn:hover {
    border-color: var(--u-color-border-hover);
    background: var(--u-color-bg-secondary);
}

.header-search-btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.header-search-btn span {
    color: var(--u-color-text-muted);
}

.header-search-btn kbd {
    font-family: inherit;
    font-size: 0.75rem;
    padding: 2px 6px;
    background: var(--u-color-bg-secondary);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-sm);
    color: var(--u-color-text-light);
    margin-left: var(--u-space-2);
}

.btn-submit {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--u-color-text-main);
    padding: var(--u-space-2) var(--u-space-4);
    border-radius: var(--u-radius-full);
    transition: var(--u-transition);
}

.btn-submit:hover {
    background: var(--u-color-bg-secondary);
    color: var(--u-color-primary);
}

/* Navigation Bar */
.nav {
    background: var(--u-color-bg-secondary);
    border-bottom: 1px solid var(--u-color-border);
    padding: var(--u-space-3) 0;
}

.nav .container {
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.nav ul {
    display: flex;
    list-style: none;
    gap: var(--u-space-6);
    margin: 0;
    padding: 0;
}

.nav ul li a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--u-color-text-muted);
    padding: var(--u-space-2) var(--u-space-3);
    border-radius: var(--u-radius-md);
    transition: var(--u-transition);
}

.nav ul li a:hover {
    color: var(--u-color-primary);
    background: var(--u-color-primary-light);
}

/* Main Layout - Two Column */
.main {
    display: grid;
    grid-template-columns: 180px 1fr;
    gap: var(--u-space-6);
    padding: var(--u-space-8) 0;
    min-height: calc(100vh - 200px);
}

/* Home Page Main - No sidebar */
.home-main {
    padding: var(--u-space-8) 0;
}

/* Section Page Main - No sidebar, centered content */
.section-main {
    display: block;
    padding: var(--u-space-8) 0;
    min-height: calc(100vh - 200px);
}

.section-main .content {
    max-width: 800px;
    margin: 0 auto;
}

/* Sidebar */
.sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
    padding-right: var(--u-space-4);
    border-right: 1px solid var(--u-color-border);
}

.sidebar h3 {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--u-color-text-light);
    margin-bottom: var(--u-space-3);
}

.sidebar ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar ul li {
    margin-bottom: var(--u-space-1);
}

.sidebar ul li a {
    display: block;
    font-size: 0.875rem;
    color: var(--u-color-text-muted);
    padding: var(--u-space-2);
    border-radius: var(--u-radius-md);
    transition: var(--u-transition);
}

.sidebar ul li a:hover {
    color: var(--u-color-primary);
    background: var(--u-color-primary-light);
}

/* Three Column Layout with TOC */
.main-with-toc {
    grid-template-columns: 180px 1fr 250px;
    gap: var(--u-space-6) var(--u-space-12);
}

/* Right Sidebar: On This Page TOC */
.toc-sidebar {
    position: sticky;
    top: 100px;
    height: fit-content;
    max-height: calc(100vh - 140px);
    padding-left: var(--u-space-8);
    margin-left: var(--u-space-8);
    border-left: none;
}

.toc-sidebar-inner {
    overflow-y: auto;
    max-height: calc(100vh - 180px);
}

.toc-sidebar-title {
    display: none;
}

.toc-sidebar-list {
    list-style: none;
    padding: 0;
    margin: 0;
    position: relative;
    border-left: 2px solid var(--u-color-border);
}

.toc-sidebar-list li {
    margin-bottom: 0;
    position: relative;
}

.toc-link {
    display: block;
    font-size: 0.875rem;
    line-height: 1.4;
    color: var(--u-color-text-muted);
    padding: var(--u-space-2) var(--u-space-2);
    padding-left: var(--u-space-3);
    margin-left: -2px;
    border-left: 2px solid transparent;
    text-decoration: none;
    transition: var(--u-transition);
    white-space: nowrap;
}

.toc-link:hover {
    color: var(--u-color-primary);
}

.toc-link.active {
    color: var(--u-color-primary);
    border-left-color: var(--u-color-primary);
    font-weight: 500;
}

/* Breadcrumbs */
.breadcrumbs {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--u-space-1);
    font-size: 0.875rem;
    color: var(--u-color-text-light);
    margin-bottom: var(--u-space-6);
    padding: var(--u-space-3) var(--u-space-4);
    background: var(--u-color-bg-secondary);
    border-radius: var(--u-radius-md);
}

.breadcrumbs a {
    color: var(--u-color-text-muted);
    transition: var(--u-transition);
    padding: var(--u-space-1) var(--u-space-2);
    border-radius: var(--u-radius-sm);
}

.breadcrumbs a:hover {
    color: var(--u-color-primary);
    background: var(--u-color-primary-light);
}

.breadcrumbs span {
    color: var(--u-color-text-light);
}

.breadcrumbs .separator {
    color: var(--u-color-text-light);
    font-size: 0.75rem;
}

.breadcrumbs .current {
    color: var(--u-color-text-main);
    font-weight: 500;
}

/* Content Area */
.content {
    max-width: 800px;
}

/* Full Width Content for listing pages */
.content-full {
    width: 100%;
    max-width: 100%;
}

.content-full h1 {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--u-color-text-main);
    margin-bottom: var(--u-space-2);
}

.content-full > p {
    text-align: center;
    color: var(--u-color-text-light);
    margin-bottom: var(--u-space-8);
    font-size: 1.125rem;
}

.content h1 {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--u-color-text-main);
    margin-bottom: var(--u-space-4);
    line-height: 1.2;
}

/* Article Meta */
.article-meta {
    font-size: 0.875rem;
    color: var(--u-color-text-light);
    margin-bottom: var(--u-space-8);
    padding-bottom: var(--u-space-4);
    border-bottom: 1px solid var(--u-color-border);
}

/* Article Content */
.article-content {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--u-color-text-main);
}

/* Reset mark elements to prevent layout shift */
.article-content mark {
    padding: 0;
    margin: 0;
    display: inline;
    line-height: inherit;
}

.article-content p {
    margin-bottom: var(--u-space-6);
}

.article-content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-top: var(--u-space-12);
    margin-bottom: var(--u-space-4);
    color: var(--u-color-text-main);
}

.article-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: var(--u-space-8);
    margin-bottom: var(--u-space-4);
    color: var(--u-color-text-main);
}

.article-content ul,
.article-content ol {
    margin-bottom: var(--u-space-6);
    padding-left: var(--u-space-6);
}

.article-content li {
    margin-bottom: var(--u-space-2);
}

.article-content a {
    color: var(--u-color-primary);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.article-content a:hover {
    text-decoration: none;
}

.article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--u-radius-md);
    margin: var(--u-space-6) 0;
    box-shadow: var(--u-shadow-md);
}

.article-content hr {
    border: none;
    border-top: 1px solid var(--u-color-border);
    margin: var(--u-space-8) 0;
}

.article-content strong {
    font-weight: 600;
    color: var(--u-color-text-main);
}

.article-content code {
    background: var(--u-color-bg-secondary);
    padding: var(--u-space-1) var(--u-space-2);
    border-radius: var(--u-radius-sm);
    font-size: 0.875em;
    font-family: 'SF Mono', Monaco, 'Courier New', monospace;
    color: var(--u-color-primary-dark);
    border: 1px solid var(--u-color-border);
}

.article-content pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: var(--u-space-6);
    border-radius: var(--u-radius-md);
    overflow-x: auto;
    margin-bottom: var(--u-space-6);
    position: relative;
}

.article-content pre code {
    background: transparent;
    border: none;
    padding: 0;
    color: inherit;
    font-size: 0.875rem;
    line-height: 1.7;
}

/* Code block copy button */
.code-block-wrapper {
    position: relative;
}

.copy-code-btn {
    position: absolute;
    top: var(--u-space-2);
    right: var(--u-space-2);
    background: rgba(255, 255, 255, 0.1);
    border: none;
    color: #94a3b8;
    padding: var(--u-space-2);
    border-radius: var(--u-radius-sm);
    cursor: pointer;
    opacity: 0;
    transition: var(--u-transition);
}

.code-block-wrapper:hover .copy-code-btn {
    opacity: 1;
}

.copy-code-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.copy-code-btn.copied {
    color: #10b981;
}

.article-content blockquote {
    border-left: 4px solid var(--u-color-primary);
    margin: var(--u-space-6) 0;
    color: var(--u-color-text-muted);
    font-style: italic;
    background: var(--u-color-primary-light);
    padding: var(--u-space-4) var(--u-space-6);
    border-radius: 0 var(--u-radius-md) var(--u-radius-md) 0;
}

.article-content blockquote p:last-child {
    margin-bottom: 0;
}

/* Callout Boxes */
.callout,
.article-content .callout {
    padding: var(--u-space-4);
    border-radius: var(--u-radius-md);
    margin: var(--u-space-6) 0;
    display: flex;
    gap: var(--u-space-3);
}

.callout-info {
    background: rgba(0, 87, 255, 0.08);
    border: 1px solid rgba(0, 87, 255, 0.2);
}

.callout-warning {
    background: rgba(255, 171, 0, 0.1);
    border: 1px solid rgba(255, 171, 0, 0.3);
}

.callout-success {
    background: rgba(0, 200, 83, 0.1);
    border: 1px solid rgba(0, 200, 83, 0.3);
}

.callout-tip {
    background: rgba(138, 43, 226, 0.08);
    border: 1px solid rgba(138, 43, 226, 0.2);
}

/* Enhanced List Styling */
.article-content ul {
    list-style: none;
    padding-left: 0;
}

.article-content ul li {
    position: relative;
    padding-left: var(--u-space-6);
}

.article-content ul li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.6em;
    width: 6px;
    height: 6px;
    background: var(--u-color-primary);
    border-radius: 50%;
}

/* Compact list style - horizontal multi-column layout */
.article-content ul.compact-list {
    display: flex;
    flex-wrap: wrap;
    column-gap: var(--u-space-6);
    margin-bottom: var(--u-space-4);
}

.article-content ul.compact-list li {
    padding-left: var(--u-space-4);
    min-width: 150px;
}

.article-content ol {
    counter-reset: list-counter;
    list-style: none;
    padding-left: 0;
}

.article-content ol li {
    position: relative;
    padding-left: var(--u-space-8);
    counter-increment: list-counter;
}

.article-content ol li::before {
    content: counter(list-counter);
    position: absolute;
    left: 0;
    top: 0;
    width: 24px;
    height: 24px;
    background: var(--u-color-primary);
    color: white;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Nested UL inside OL should use blue bullets, not numbers */
.article-content ol li ul {
    counter-reset: none;
    margin-top: var(--u-space-3);
    margin-bottom: var(--u-space-3);
}

.article-content ol li ul li {
    counter-increment: none;
    padding-left: var(--u-space-6);
}

.article-content ol li ul li::before {
    content: "";
    width: 6px;
    height: 6px;
    background: var(--u-color-primary);
    border-radius: 50%;
    top: 0.6em;
}

/* Video Container */
.video-container {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    margin: var(--u-space-6) 0;
    border-radius: var(--u-radius-md);
    box-shadow: var(--u-shadow-md);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* Footer */
.footer {
    background: var(--u-color-bg-secondary);
    border-top: 1px solid var(--u-color-border);
    padding: var(--u-space-8) 0;
    margin-top: var(--u-space-16);
    text-align: center;
}

.footer p {
    font-size: 0.875rem;
    color: var(--u-color-text-light);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: var(--u-space-16) 0 var(--u-space-12);
    background: linear-gradient(180deg, var(--u-color-primary-light) 0%, var(--u-color-bg-main) 100%);
    grid-column: 1 / -1;
    width: 100%;
    position: relative;
    overflow: visible;
    z-index: 10;
}

/* Subtle decorative pattern */
.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: radial-gradient(circle at 25% 25%, rgba(0, 87, 255, 0.03) 0%, transparent 50%),
                      radial-gradient(circle at 75% 75%, rgba(0, 87, 255, 0.03) 0%, transparent 50%);
    pointer-events: none;
}

.hero .container {
    position: relative;
    z-index: 1;
}

.hero h1 {
    font-size: 3.5rem;
    /* Large, bold typography */
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: var(--u-space-8);
    color: var(--u-color-text-main);
    background: linear-gradient(135deg, var(--u-color-text-main) 0%, var(--u-color-primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Search Bar - Maze Style */
.search-container {
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

.search-input {
    width: 100%;
    padding: var(--u-space-4) var(--u-space-6) var(--u-space-4) var(--u-space-12);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-full);
    font-size: 1.125rem;
    cursor: pointer;
    color: var(--u-color-text-main);
    background: var(--u-color-bg-main);
    box-shadow: var(--u-shadow-md);
    transition: var(--u-transition);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394A3B8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: 1.5rem center;
    background-size: 1.5rem;
}

.search-input:focus {
    outline: none;
    border-color: var(--u-color-primary);
    box-shadow: 0 0 0 4px var(--u-color-primary-light);
    cursor: text;
}

/* Hero Search Dropdown */
.hero-search-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    text-align: left;
    margin-top: var(--u-space-2);
    background: var(--u-color-bg-main);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-lg);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    max-height: 400px;
    overflow-y: auto;
    z-index: 100;
}

.hero-search-item {
    display: flex;
    align-items: flex-start;
    gap: var(--u-space-3);
    padding: var(--u-space-4);
    text-decoration: none;
    color: inherit;
    border-bottom: 1px solid var(--u-color-border);
    transition: background-color 0.15s;
}

.hero-search-item:last-child {
    border-bottom: none;
}

.hero-search-item:hover,
.hero-search-item.active {
    background: var(--u-color-primary-light);
}

.hero-search-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: var(--u-color-text-muted);
    margin-top: 2px;
}

.hero-search-icon svg {
    width: 100%;
    height: 100%;
}

.hero-search-content {
    flex: 1;
    min-width: 0;
    text-align: left;
}

.hero-search-title {
    font-weight: 500;
    color: var(--u-color-text-main);
    margin-bottom: var(--u-space-1);
    line-height: 1.4;
    text-align: left;
}

.hero-search-title mark {
    background: rgba(0, 87, 255, 0.15);
    color: var(--u-color-primary);
    padding: 0;
    border-radius: 2px;
}

.hero-search-meta {
    display: flex;
    align-items: center;
    gap: var(--u-space-2);
    font-size: 0.75rem;
    color: var(--u-color-text-muted);
}

.hero-search-category {
    color: var(--u-color-text-muted);
}

.hero-search-match-type {
    font-size: 0.75rem;
    padding: 1px 6px;
    background: var(--u-color-primary-light);
    color: var(--u-color-primary);
    border-radius: 10px;
    font-weight: 500;
}

.hero-search-context {
    font-size: 0.75rem;
    color: var(--u-color-text-muted);
    margin-top: var(--u-space-1);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    text-align: left;
}

.hero-search-context mark {
    background: rgba(0, 87, 255, 0.15);
    color: var(--u-color-primary);
    padding: 0;
    border-radius: 2px;
}

.hero-search-no-results,
.hero-search-loading {
    padding: var(--u-space-6);
    text-align: center;
    color: var(--u-color-text-muted);
}

/* Topic Grid */
.topic-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--u-space-6);
    margin-bottom: var(--u-space-16);
}

.topic-card {
    background: var(--u-color-bg-card);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-lg);
    padding: var(--u-space-8);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    height: 100%;
}

.topic-card:hover {
    border-color: var(--u-color-primary);
    box-shadow: 0 12px 32px -8px rgba(0, 87, 255, 0.2);
    transform: translateY(-6px);
}

.topic-card:focus-visible {
    outline: none;
    border-color: var(--u-color-primary);
    box-shadow: 0 12px 32px -8px rgba(0, 87, 255, 0.2);
}

.topic-icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--u-space-6);
    color: var(--u-color-primary);
    background: var(--u-color-primary-light);
    border-radius: var(--u-radius-md);
    padding: 10px;
    transition: var(--u-transition);
}

.topic-card:hover .topic-icon {
    background: var(--u-color-primary);
    color: white;
}

.topic-icon svg {
    width: 100%;
    height: 100%;
}

.topic-card h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--u-space-2);
    color: var(--u-color-text-main);
}

.topic-description {
    color: var(--u-color-text-muted);
    font-size: 1rem;
    line-height: 1.5;
    flex-grow: 1;
}

.topic-meta {
    margin-top: var(--u-space-4);
    font-size: 0.875rem;
    color: var(--u-color-primary);
    font-weight: 600;
}

/* Support CTA Card */
.support-cta-card {
    background: var(--u-color-bg-card);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-lg);
    padding: var(--u-space-12) var(--u-space-8);
    text-align: center;
    margin-top: var(--u-space-8);
    margin-bottom: var(--u-space-16);
}

.support-cta-card h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--u-color-text-main);
    margin-bottom: var(--u-space-3);
}

.support-cta-card p {
    color: var(--u-color-text-muted);
    font-size: 1rem;
    line-height: 1.6;
    max-width: 480px;
    margin: 0 auto var(--u-space-6);
}

.support-cta-btn {
    display: inline-block;
    background: var(--u-color-primary);
    color: white;
    padding: var(--u-space-3) var(--u-space-6);
    border-radius: var(--u-radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.2s ease;
}

.support-cta-btn:hover {
    background: var(--u-color-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

/* Article Grid */
.content h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--u-space-6);
    letter-spacing: -0.01em;
}

.article-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--u-space-6);
}

.article-card {
    background: var(--u-color-bg-card);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-lg);
    padding: var(--u-space-6);
    display: block;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
}

.article-card::after {
    content: '→';
    position: absolute;
    right: var(--u-space-6);
    top: 50%;
    transform: translateY(-50%) translateX(-8px);
    opacity: 0;
    color: var(--u-color-primary);
    font-size: 1.25rem;
    transition: all 0.3s ease;
}

.article-card:hover {
    border-color: var(--u-color-primary);
    box-shadow: 0 8px 16px -4px rgba(0, 87, 255, 0.1);
    transform: translateX(4px);
}

.article-card:hover::after {
    opacity: 1;
    transform: translateY(-50%) translateX(0);
}

.article-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--u-space-2);
    color: var(--u-color-text-main);
    padding-right: var(--u-space-8);
}

/* ===========================
   Popular Articles Section (Homepage)
   =========================== */

.popular-articles-section {
    margin-top: var(--u-space-16);
    padding-top: var(--u-space-12);
    border-top: 1px solid var(--u-color-border);
}

.popular-articles-section .section-header {
    text-align: center;
    margin-bottom: var(--u-space-10);
}

.popular-articles-section .section-header h2 {
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--u-color-text-main);
    margin-bottom: var(--u-space-3);
}

.popular-articles-section .section-description {
    font-size: 1.125rem;
    color: var(--u-color-text-muted);
    margin: 0;
}

.popular-articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--u-space-8);
    margin-bottom: var(--u-space-10);
}

.popular-article-card {
    display: flex;
    flex-direction: column;
    background: var(--u-color-bg-card);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-xl);
    padding: var(--u-space-8);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    min-height: 220px;
}

.popular-article-card:hover {
    border-color: var(--u-color-primary);
    box-shadow: 0 12px 32px -8px rgba(0, 87, 255, 0.2);
    transform: translateY(-6px);
}

.popular-article-tag {
    display: inline-block;
    padding: var(--u-space-1) var(--u-space-3);
    background: var(--u-color-primary-light);
    color: var(--u-color-primary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--u-radius-full);
    margin-bottom: var(--u-space-5);
    width: fit-content;
    letter-spacing: 0.02em;
}

.popular-article-card h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--u-color-text-main);
    margin-bottom: var(--u-space-4);
    line-height: 1.5;
}

.popular-article-desc {
    font-size: 1rem;
    color: var(--u-color-text-muted);
    line-height: 1.6;
    flex-grow: 1;
    margin-bottom: var(--u-space-6);
}

.popular-article-link {
    display: inline-flex;
    align-items: center;
    gap: var(--u-space-2);
    font-size: 1rem;
    font-weight: 600;
    color: var(--u-color-primary);
    transition: all 0.2s ease;
    margin-top: auto;
    padding-top: var(--u-space-4);
    border-top: 1px solid var(--u-color-border);
}

.popular-article-card:hover .popular-article-link {
    color: var(--u-color-primary-dark);
    gap: var(--u-space-3);
}

.section-footer {
    text-align: center;
    margin-top: var(--u-space-4);
}

.view-all-link {
    display: inline-flex;
    align-items: center;
    padding: var(--u-space-4) var(--u-space-8);
    background: var(--u-color-bg-secondary);
    color: var(--u-color-primary);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--u-radius-lg);
    text-decoration: none;
    transition: all 0.2s ease;
    border: 1px solid var(--u-color-border);
}

.view-all-link:hover {
    background: var(--u-color-primary);
    color: white;
    border-color: var(--u-color-primary);
}

/* Responsive: Popular Articles */
@media (max-width: 1024px) {
    .popular-articles-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--u-space-6);
    }

    .popular-article-card {
        padding: var(--u-space-6);
        min-height: 200px;
    }
}

@media (max-width: 768px) {
    .popular-articles-section {
        margin-top: var(--u-space-10);
        padding-top: var(--u-space-8);
    }

    .popular-articles-section .section-header {
        margin-bottom: var(--u-space-8);
    }

    .popular-articles-section .section-header h2 {
        font-size: 1.5rem;
    }

    .popular-articles-grid {
        grid-template-columns: 1fr;
        gap: var(--u-space-5);
    }

    .popular-article-card {
        padding: var(--u-space-6);
        min-height: auto;
    }

    .popular-article-card h3 {
        font-size: 1.125rem;
    }

    .popular-article-desc {
        margin-bottom: var(--u-space-5);
    }

    .popular-article-link {
        padding-top: var(--u-space-4);
    }
}

/* Article List */
.article-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.article-item {
    padding: var(--u-space-4) 0;
    border-bottom: 1px solid var(--u-color-border);
}

.article-item:last-child {
    border-bottom: none;
}

.article-item a {
    display: flex;
    align-items: center;
    gap: var(--u-space-3);
    color: var(--u-color-text-main);
    font-weight: 500;
    transition: var(--u-transition);
}

.article-item a:hover {
    color: var(--u-color-primary);
}

.article-item a::before {
    content: "→";
    color: var(--u-color-text-light);
    transition: var(--u-transition);
}

.article-item a:hover::before {
    color: var(--u-color-primary);
    transform: translateX(4px);
}

/* Section Page Styles */
.section-header {
    margin-bottom: var(--u-space-8);
}

.section-header h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--u-space-2);
}

.section-header p {
    color: var(--u-color-text-muted);
}

/* Table of Contents (Sidebar) */
.toc {
    background: var(--u-color-bg-secondary);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-md);
    padding: var(--u-space-6);
    margin-bottom: var(--u-space-8);
    position: sticky;
    top: 100px;
}

.toc h4 {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--u-space-4);
    color: var(--u-color-text-light);
}

.toc ul {
    list-style: none;
    padding: 0;
    margin: 0;
    border-left: 2px solid var(--u-color-border);
}

.toc li {
    margin-bottom: 0;
}

.toc a {
    display: block;
    font-size: 0.875rem;
    color: var(--u-color-text-muted);
    padding: var(--u-space-2) var(--u-space-4);
    margin-left: -2px;
    border-left: 2px solid transparent;
    transition: var(--u-transition);
}

.toc a:hover {
    color: var(--u-color-primary);
    border-left-color: var(--u-color-primary);
    background: var(--u-color-primary-light);
}

.toc a.active {
    color: var(--u-color-primary);
    border-left-color: var(--u-color-primary);
    font-weight: 500;
}

.toc .toc-h3 a {
    padding-left: var(--u-space-8);
    font-size: 0.875rem;
}

/* Article Index (Inline Table of Contents) */
.article-index {
    background: var(--u-color-bg-secondary);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-lg);
    padding: var(--u-space-6);
    margin: var(--u-space-8) 0;
}

.article-index-header {
    display: flex;
    align-items: center;
    gap: var(--u-space-3);
    margin-bottom: var(--u-space-5);
    padding-bottom: var(--u-space-4);
    border-bottom: 1px solid var(--u-color-border);
}

.article-index-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--u-color-primary-light);
    border-radius: var(--u-radius-md);
    color: var(--u-color-primary);
    flex-shrink: 0;
}

.article-index-icon svg {
    width: 18px;
    height: 18px;
}

.article-index-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--u-color-text-main);
    margin: 0;
}

.article-index-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--u-space-2) var(--u-space-6);
}

.article-index-list li {
    position: relative;
    padding-left: 0;
}

.article-index-list li::before {
    display: none;
}

.article-index-list a {
    display: flex;
    align-items: flex-start;
    gap: var(--u-space-3);
    padding: var(--u-space-2) var(--u-space-3);
    font-size: 0.875rem;
    color: var(--u-color-text-muted);
    text-decoration: none;
    border-radius: var(--u-radius-md);
    transition: all 0.15s ease;
    line-height: 1.4;
}

.article-index-list a:hover {
    background: var(--u-color-primary-light);
    color: var(--u-color-primary);
}

.article-index-number {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--u-color-text-light);
    flex-shrink: 0;
}

.article-index-number::after {
    content: '.';
}

.article-index-list a:hover .article-index-number {
    color: var(--u-color-primary);
}

/* Responsive: Article Index */
@media (max-width: 768px) {
    .article-index {
        padding: var(--u-space-5);
    }

    .article-index-list {
        grid-template-columns: 1fr;
        gap: var(--u-space-1);
    }

    .article-index-list a {
        padding: var(--u-space-3);
    }
}

/* Related Articles */
.related-articles {
    margin-top: var(--u-space-12);
    padding-top: var(--u-space-8);
    border-top: 1px solid var(--u-color-border);
}

.related-articles h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--u-space-4);
}

.related-articles ul {
    list-style: none;
    padding: 0;
}

.related-articles li {
    margin-bottom: var(--u-space-3);
}

.related-articles a {
    color: var(--u-color-primary);
}

/* Article Navigation (Prev/Next) */
.article-nav {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--u-space-4);
    margin-top: var(--u-space-12);
    padding-top: var(--u-space-8);
    border-top: 1px solid var(--u-color-border);
}

.article-nav-prev,
.article-nav-next {
    display: flex;
    flex-direction: column;
    padding: var(--u-space-4);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-md);
    text-decoration: none;
    transition: var(--u-transition);
}

.article-nav-prev:hover,
.article-nav-next:hover {
    border-color: var(--u-color-primary);
    background: var(--u-color-bg-subtle);
}

.article-nav-next {
    text-align: right;
}

.article-nav-label {
    font-size: 0.75rem;
    color: var(--u-color-text-muted);
    margin-bottom: var(--u-space-1);
}

.article-nav-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--u-color-primary);
    line-height: 1.4;
}

@media (max-width: 768px) {
    .article-nav {
        grid-template-columns: 1fr;
    }

    .article-nav-next {
        text-align: left;
    }
}

/* ============================================
   VIDEO TUTORIALS PAGE
   ============================================ */

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
    gap: var(--u-space-8);
    margin-top: var(--u-space-8);
}

.video-card {
    background: white;
    border-radius: var(--u-radius-lg);
    overflow: hidden;
    box-shadow: var(--u-shadow-md);
    transition: var(--u-transition);
    border: 1px solid var(--u-color-border);
}

.video-card:hover {
    box-shadow: var(--u-shadow-lg);
    transform: translateY(-4px);
    border-color: var(--u-color-primary);
}

.video-thumbnail {
    position: relative;
    background: #1e293b;
    aspect-ratio: 16 / 9;
}

.video-thumbnail video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-info {
    padding: var(--u-space-5);
}

.video-info h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--u-color-text-main);
    margin-bottom: var(--u-space-2);
    line-height: 1.4;
}

.video-info .video-description {
    font-size: 0.875rem;
    color: var(--u-color-text-muted);
    line-height: 1.5;
    margin: 0;
}

/* Video page hero styling */
.main > .content > h1:first-of-type {
    text-align: center;
    margin-bottom: var(--u-space-4);
}

.main > .content > p:first-of-type {
    text-align: center;
    color: var(--u-color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--u-space-8);
}

/* YouTube embed containers */
.youtube-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    margin: var(--u-space-4) 0;
    border-radius: var(--u-radius-md);
    overflow: hidden;
    background: #1e293b;
}

.youtube-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* Responsive video grid */
@media (max-width: 768px) {
    .video-grid {
        grid-template-columns: 1fr;
        gap: var(--u-space-6);
    }

    .video-info h3 {
        font-size: 1rem;
    }
}

/* Page Title Styles (for videos, articles listing, etc.) */
.page-title {
    font-size: 2.25rem;
    font-weight: 700;
    text-align: center;
    color: var(--u-color-text-main);
    margin-bottom: var(--u-space-4);
}

.page-description {
    font-size: 1.125rem;
    color: var(--u-color-text-muted);
    text-align: justify;
    width: 100%;
    margin: 0 0 var(--u-space-10);
    line-height: 1.6;
}

/* Search Results Dropdown */
.search-container {
    position: relative;
}

.search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-lg);
    box-shadow: 0 20px 40px -8px rgba(0, 0, 0, 0.15);
    margin-top: var(--u-space-2);
    max-height: 400px;
    overflow-y: auto;
    z-index: 1000;
    display: none;
    animation: slideDown 0.2s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.search-result-item {
    display: flex;
    align-items: flex-start;
    gap: var(--u-space-3);
    padding: var(--u-space-4);
    border-bottom: 1px solid var(--u-color-border);
    text-decoration: none;
    color: var(--u-color-text);
    transition: var(--u-transition);
}

.search-result-item::before {
    content: '';
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394A3B8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z'%3E%3C/path%3E%3C/svg%3E");
    background-size: contain;
    margin-top: 2px;
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item:hover,
.search-result-item.active {
    background: var(--u-color-primary-light);
}

.search-result-item:hover::before,
.search-result-item.active::before {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%230057FF'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z'%3E%3C/path%3E%3C/svg%3E");
}

.search-result-content {
    flex: 1;
}

.search-result-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--u-color-text-main);
    margin-bottom: var(--u-space-1);
}

.search-result-title mark {
    background: rgba(0, 87, 255, 0.2);
    color: var(--u-color-primary);
    padding: 0;
    border-radius: 3px;
    font-weight: 600;
}

.search-result-meta {
    font-size: 0.75rem;
    color: var(--u-color-text-muted);
}

.search-no-results {
    padding: var(--u-space-8);
    text-align: center;
    color: var(--u-color-text-muted);
    font-size: 1rem;
}

.search-no-results::before {
    content: '🔍';
    display: block;
    font-size: 2rem;
    margin-bottom: var(--u-space-2);
    opacity: 0.5;
}

/* Search keyboard hint */
.search-kbd {
    position: absolute;
    right: var(--u-space-4);
    top: 50%;
    transform: translateY(-50%);
    background: var(--u-color-bg-secondary);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-sm);
    padding: 2px 8px;
    font-size: 0.75rem;
    color: var(--u-color-text-light);
    font-family: inherit;
    pointer-events: none;
    transition: opacity 0.2s;
}

.search-input:focus ~ .search-kbd {
    opacity: 0;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 32px;
    height: 32px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-menu-btn span {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--u-color-text);
    border-radius: 2px;
    transition: var(--u-transition);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Responsive */
@media (max-width: 1200px) {
    .main-with-toc {
        grid-template-columns: 180px 1fr;
    }

    .toc-sidebar {
        display: none;
    }
}

@media (max-width: 1024px) {
    .main {
        grid-template-columns: 180px 1fr;
        gap: var(--u-space-5);
    }

    .main-with-toc {
        grid-template-columns: 180px 1fr;
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .main {
        grid-template-columns: 1fr;
    }

    .sidebar {
        display: none;
    }

    .header-actions {
        display: none;
    }

    /* Mobile Menu */
    .mobile-menu-btn {
        display: flex;
    }

    .header .container {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        border-bottom: 1px solid var(--u-color-border);
        box-shadow: var(--u-shadow-md);
        z-index: 100;
    }

    .nav.nav-open {
        display: block;
    }

    .nav ul {
        flex-direction: column;
        gap: 0;
    }

    .nav ul li {
        border-bottom: 1px solid var(--u-color-border);
    }

    .nav ul li:last-child {
        border-bottom: none;
    }

    .nav ul li a {
        display: block;
        padding: var(--u-space-4);
        font-size: 1rem;
    }

    .content h1 {
        font-size: 1.75rem;
    }

    .article-content {
        font-size: 1rem;
    }

    .breadcrumbs {
        font-size: 0.75rem;
    }

    .container {
        padding: 0 var(--u-space-4);
    }

    .toc {
        display: none;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .topic-grid {
        grid-template-columns: 1fr;
    }

    .article-grid {
        grid-template-columns: 1fr;
    }

    .header-branding h1 {
        font-size: 1.25rem;
    }

    .header-branding p {
        display: none;
    }
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    background: var(--u-color-primary);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 87, 255, 0.3);
    z-index: 100;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--u-color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 87, 255, 0.4);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* Info/Callout Boxes */
.callout {
    padding: var(--u-space-4) var(--u-space-6);
    border-radius: var(--u-radius-md);
    margin: var(--u-space-6) 0;
    border-left: 4px solid;
}

.callout-info {
    background: var(--u-color-primary-light);
    border-color: var(--u-color-primary);
}

.callout-warning {
    background: #FEF3C7;
    border-color: #F59E0B;
}

.callout-success {
    background: #D1FAE5;
    border-color: #10B981;
}

.callout-title {
    font-weight: 600;
    margin-bottom: var(--u-space-2);
    display: flex;
    align-items: center;
    gap: var(--u-space-2);
}

.callout-content {
    color: var(--u-color-text-muted);
}

/* Keyboard Shortcut Hint */
.search-hint {
    position: absolute;
    right: var(--u-space-4);
    top: 50%;
    transform: translateY(-50%);
    background: var(--u-color-bg-secondary);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-sm);
    padding: 2px 8px;
    font-size: 0.75rem;
    color: var(--u-color-text-light);
    font-family: monospace;
    pointer-events: none;
}

.search-input:focus + .search-hint {
    display: none;
}

/* Smooth Scroll */
html {
    scroll-behavior: smooth;
}

/* Focus Styles for Accessibility */
a:focus-visible:not(.topic-card):not(.popular-article-card):not(.article-card):not(.article-card-enhanced):not(.related-article-card),
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--u-color-primary);
    outline-offset: 2px;
}

/* Selection Color */
::selection {
    background: var(--u-color-primary-light);
    color: var(--u-color-primary-dark);
}

/* Image Lightbox */
.image-lightbox {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: var(--u-space-8);
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--u-radius-md);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
}

.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: transparent;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    padding: var(--u-space-2);
    line-height: 1;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.lightbox-close:hover {
    opacity: 1;
}

/* ====================================
   P0-1: GLOBAL SEARCH MODAL (Cmd+K)
   ==================================== */
.search-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 15vh;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

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

.search-modal {
    background: var(--u-color-bg-main);
    border-radius: var(--u-radius-lg);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    width: 100%;
    max-width: 600px;
    max-height: 70vh;
    overflow: hidden;
    transform: scale(0.95) translateY(-10px);
    transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.search-modal-overlay.active .search-modal {
    transform: scale(1) translateY(0);
}

.search-modal-header {
    display: flex;
    align-items: center;
    padding: var(--u-space-4);
    border-bottom: 1px solid var(--u-color-border);
    gap: var(--u-space-3);
}

.search-modal-header svg {
    width: 20px;
    height: 20px;
    color: var(--u-color-text-light);
    flex-shrink: 0;
}

.search-modal-input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 1.125rem;
    color: var(--u-color-text-main);
    outline: none;
}

.search-modal-input::placeholder {
    color: var(--u-color-text-light);
}

.search-modal-kbd {
    display: flex;
    gap: var(--u-space-1);
}

.search-modal-kbd kbd {
    background: var(--u-color-bg-secondary);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-sm);
    padding: 2px 6px;
    font-size: 0.75rem;
    font-family: inherit;
    color: var(--u-color-text-light);
}

.search-modal-results {
    max-height: calc(70vh - 70px);
    overflow-y: auto;
}

.search-modal-section {
    padding: var(--u-space-2) var(--u-space-4);
}

.search-modal-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--u-color-text-light);
    padding: var(--u-space-2) 0;
}

.search-modal-item {
    display: flex;
    align-items: center;
    gap: var(--u-space-3);
    padding: var(--u-space-3) var(--u-space-4);
    margin: 0 calc(-1 * var(--u-space-4));
    border-radius: 0;
    cursor: pointer;
    transition: background-color 0.15s;
    text-decoration: none;
    color: inherit;
}

.search-modal-item:hover,
.search-modal-item.active {
    background: var(--u-color-primary-light);
}

.search-modal-item.active {
    background: var(--u-color-primary);
    color: white;
}

.search-modal-item.active .search-modal-item-meta {
    color: rgba(255, 255, 255, 0.8);
}

.search-modal-item-icon {
    width: 36px;
    height: 36px;
    background: var(--u-color-bg-secondary);
    border-radius: var(--u-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.search-modal-item.active .search-modal-item-icon {
    background: rgba(255, 255, 255, 0.2);
}

.search-modal-item-icon svg {
    width: 18px;
    height: 18px;
    color: var(--u-color-text-muted);
}

.search-modal-item.active .search-modal-item-icon svg {
    color: white;
}

.search-modal-item-content {
    flex: 1;
    min-width: 0;
}

.search-modal-item-title {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-modal-item-title mark {
    background: rgba(0, 87, 255, 0.2);
    color: inherit;
    border-radius: 2px;
    padding: 0;
}

.search-modal-item.active .search-modal-item-title mark {
    background: rgba(255, 255, 255, 0.3);
}

.search-modal-item-meta {
    display: flex;
    align-items: center;
    gap: var(--u-space-2);
    font-size: 0.875rem;
    color: var(--u-color-text-light);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.search-modal-match-type {
    font-size: 0.75rem;
    padding: 1px 6px;
    background: var(--u-color-primary-light);
    color: var(--u-color-primary);
    border-radius: 10px;
    font-weight: 500;
}

.search-modal-item.active .search-modal-match-type {
    background: rgba(255, 255, 255, 0.2);
    color: rgba(255, 255, 255, 0.9);
}

.search-modal-item-context {
    font-size: 0.75rem;
    color: var(--u-color-text-muted);
    margin-top: var(--u-space-1);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.search-modal-item-context mark {
    background: rgba(0, 87, 255, 0.15);
    color: var(--u-color-primary);
    padding: 0;
    border-radius: 2px;
}

.search-modal-item.active .search-modal-item-context {
    color: rgba(255, 255, 255, 0.8);
}

.search-modal-item.active .search-modal-item-context mark {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.search-modal-loading {
    padding: var(--u-space-8);
    text-align: center;
    color: var(--u-color-text-light);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--u-space-3);
}

.search-modal-loading svg {
    width: 32px;
    height: 32px;
    opacity: 0.6;
}

.search-modal-loading svg.spin {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.search-modal-empty {
    padding: var(--u-space-8);
    text-align: center;
    color: var(--u-color-text-light);
}

.search-modal-empty svg {
    width: 48px;
    height: 48px;
    margin-bottom: var(--u-space-4);
    opacity: 0.5;
}

.search-modal-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--u-space-3) var(--u-space-4);
    border-top: 1px solid var(--u-color-border);
    background: var(--u-color-bg-secondary);
    font-size: 0.75rem;
    color: var(--u-color-text-light);
}

.search-modal-hints {
    display: flex;
    gap: var(--u-space-4);
}

.search-modal-hint {
    display: flex;
    align-items: center;
    gap: var(--u-space-1);
}

.search-modal-hint kbd {
    background: var(--u-color-bg-main);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-sm);
    padding: 1px 5px;
    font-size: 0.75rem;
}

/* Search trigger button in header */
.search-trigger {
    display: flex;
    align-items: center;
    gap: var(--u-space-2);
    padding: var(--u-space-2) var(--u-space-4);
    background: var(--u-color-bg-secondary);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-full);
    cursor: pointer;
    color: var(--u-color-text-light);
    font-size: 0.875rem;
    transition: var(--u-transition);
    min-width: 200px;
}

.search-trigger:hover {
    border-color: var(--u-color-border-hover);
    background: var(--u-color-bg-main);
}

.search-trigger svg {
    width: 16px;
    height: 16px;
}

.search-trigger span {
    flex: 1;
    text-align: left;
}

.search-trigger kbd {
    background: var(--u-color-bg-main);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-sm);
    padding: 1px 6px;
    font-size: 0.75rem;
    font-family: inherit;
}

/* ====================================
   P0-2: WAS THIS HELPFUL? FEEDBACK
   ==================================== */
.article-feedback {
    margin-top: var(--u-space-12);
    padding: var(--u-space-8);
    background: var(--u-color-bg-secondary);
    border-radius: var(--u-radius-lg);
    text-align: center;
}

.article-feedback-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: var(--u-space-4);
    color: var(--u-color-text-main);
}

.article-feedback-buttons {
    display: flex;
    justify-content: center;
    gap: var(--u-space-4);
    margin-bottom: var(--u-space-4);
}

.feedback-btn {
    display: flex;
    align-items: center;
    gap: var(--u-space-2);
    padding: var(--u-space-3) var(--u-space-6);
    border: 1px solid var(--u-color-border);
    background: var(--u-color-bg-main);
    border-radius: var(--u-radius-full);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--u-color-text-main);
    transition: var(--u-transition);
}

.feedback-btn:hover {
    border-color: var(--u-color-primary);
    color: var(--u-color-primary);
}

.feedback-btn.selected {
    background: var(--u-color-primary);
    border-color: var(--u-color-primary);
    color: white;
}

.feedback-btn svg {
    width: 20px;
    height: 20px;
}

.feedback-thanks {
    display: none;
    color: var(--u-color-text-muted);
    font-size: 0.875rem;
}

.feedback-thanks.show {
    display: block;
}

.feedback-form {
    display: none;
    margin-top: var(--u-space-4);
}

.feedback-form.show {
    display: block;
}

.feedback-textarea {
    width: 100%;
    max-width: 400px;
    padding: var(--u-space-3);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-md);
    font-family: inherit;
    font-size: 0.875rem;
    resize: vertical;
    min-height: 80px;
    margin-bottom: var(--u-space-3);
}

.feedback-textarea:focus {
    outline: none;
    border-color: var(--u-color-primary);
}

.feedback-submit {
    padding: var(--u-space-2) var(--u-space-6);
    background: var(--u-color-primary);
    color: white;
    border: none;
    border-radius: var(--u-radius-full);
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--u-transition);
}

.feedback-submit:hover {
    background: var(--u-color-primary-dark);
}

/* ====================================
   P0-3: RELATED ARTICLES & PREV/NEXT
   ==================================== */
.related-articles {
    margin-top: var(--u-space-12);
    padding-top: var(--u-space-8);
    border-top: 1px solid var(--u-color-border);
}

.related-articles h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--u-space-6);
    color: var(--u-color-text-main);
}

.related-articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: var(--u-space-4);
}

.related-article-card {
    display: block;
    padding: var(--u-space-4);
    background: var(--u-color-bg-secondary);
    border-radius: var(--u-radius-md);
    border: 1px solid transparent;
    transition: var(--u-transition);
    text-decoration: none;
}

.related-article-card:hover {
    border-color: var(--u-color-border);
    background: var(--u-color-bg-main);
    transform: translateY(-2px);
}

.related-article-card h4 {
    font-size: 1rem;
    font-weight: 500;
    color: var(--u-color-text-main);
    margin-bottom: var(--u-space-2);
    line-height: 1.4;
}

.related-article-card span {
    font-size: 0.75rem;
    color: var(--u-color-text-light);
}

.article-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--u-space-4);
    margin-top: var(--u-space-8);
    padding-top: var(--u-space-8);
    border-top: 1px solid var(--u-color-border);
}

.article-nav-link {
    display: flex;
    flex-direction: column;
    padding: var(--u-space-4);
    background: var(--u-color-bg-secondary);
    border-radius: var(--u-radius-md);
    text-decoration: none;
    transition: var(--u-transition);
    border: 1px solid transparent;
}

.article-nav-link:hover {
    border-color: var(--u-color-border);
    background: var(--u-color-bg-main);
}

.article-nav-link.prev {
    align-items: flex-start;
}

.article-nav-link.next {
    align-items: flex-end;
    text-align: right;
}

.article-nav-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--u-color-text-light);
    margin-bottom: var(--u-space-1);
    display: flex;
    align-items: center;
    gap: var(--u-space-1);
}

.article-nav-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--u-color-text-main);
}

/* ====================================
   P1-3: ENHANCED FOOTER
   ==================================== */
.footer {
    background: var(--u-color-bg-secondary);
    border-top: 1px solid var(--u-color-border);
    padding: var(--u-space-12) 0 var(--u-space-8);
    margin-top: var(--u-space-16);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--u-space-8);
    margin-bottom: var(--u-space-8);
}

.footer-brand {
    max-width: 280px;
}

.footer-brand-header {
    display: flex;
    align-items: center;
    gap: var(--u-space-3);
    margin-bottom: var(--u-space-4);
}

.footer-brand-header img {
    height: 32px;
    width: auto;
}

.footer-brand-header span {
    font-weight: 600;
    font-size: 1rem;
    color: var(--u-color-text-main);
}

.footer-brand p {
    font-size: 0.875rem;
    color: var(--u-color-text-muted);
    line-height: 1.6;
}

.footer-column h4 {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--u-color-text-main);
    margin-bottom: var(--u-space-4);
}

.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-column ul li {
    margin-bottom: var(--u-space-2);
}

.footer-column ul li a {
    font-size: 0.875rem;
    color: var(--u-color-text-muted);
    transition: color 0.2s;
}

.footer-column ul li a:hover {
    color: var(--u-color-primary);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--u-space-6);
    border-top: 1px solid var(--u-color-border);
    font-size: 0.875rem;
    color: var(--u-color-text-light);
}

.footer-social {
    display: flex;
    gap: var(--u-space-4);
}

.footer-social a {
    color: var(--u-color-text-muted);
    transition: color 0.2s;
}

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

.footer-social svg {
    width: 20px;
    height: 20px;
}

/* ====================================
   P1-4: DARK MODE SUPPORT
   ==================================== */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    border-radius: var(--u-radius-md);
    cursor: pointer;
    color: var(--u-color-text-muted);
    transition: var(--u-transition);
}

.theme-toggle:hover {
    background: var(--u-color-bg-secondary);
    color: var(--u-color-text-main);
}

.theme-toggle svg {
    width: 20px;
    height: 20px;
}

.theme-toggle .icon-moon {
    display: block;
}

.theme-toggle .icon-sun {
    display: none;
}

/* Dark Mode Styles */
[data-theme="dark"] {
    --u-color-primary: #8B5CF6;
    --u-color-primary-dark: #7C3AED;
    --u-color-primary-light: rgba(139, 92, 246, 0.15);

    --u-color-text-main: #F1F5F9;
    --u-color-text-muted: #94A3B8;
    --u-color-text-light: #64748B;
    --u-color-text-inverse: #0F172A;

    --u-color-bg-main: #0F172A;
    --u-color-bg-secondary: #1E293B;
    --u-color-bg-card: #1E293B;
    --u-color-bg-header: #0F172A;

    --u-color-border: #334155;
    --u-color-border-hover: #475569;
}

[data-theme="dark"] .theme-toggle .icon-moon {
    display: none;
}

[data-theme="dark"] .theme-toggle .icon-sun {
    display: block;
}

[data-theme="dark"] .header.scrolled {
    background: rgba(15, 23, 42, 0.95);
}

[data-theme="dark"] .search-modal-item-title mark {
    background: rgba(139, 92, 246, 0.3);
}

[data-theme="dark"] .hero {
    background: linear-gradient(135deg, #1E293B 0%, #0F172A 100%);
}

[data-theme="dark"] img {
    opacity: 0.9;
}

/* ====================================
   P1-5: MOBILE NAVIGATION DRAWER
   ==================================== */
.mobile-sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.5);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

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

.mobile-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100%;
    background: var(--u-color-bg-main);
    z-index: 100;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.1);
}

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

.mobile-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--u-space-4);
    border-bottom: 1px solid var(--u-color-border);
}

.mobile-sidebar-header img {
    height: 28px;
    width: auto;
}

.mobile-sidebar-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: transparent;
    cursor: pointer;
    color: var(--u-color-text-muted);
    border-radius: var(--u-radius-md);
}

.mobile-sidebar-close:hover {
    background: var(--u-color-bg-secondary);
}

.mobile-sidebar-nav {
    padding: var(--u-space-4);
}

.mobile-sidebar-nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.mobile-sidebar-nav li {
    margin-bottom: var(--u-space-1);
}

.mobile-sidebar-nav a {
    display: block;
    padding: var(--u-space-3) var(--u-space-4);
    color: var(--u-color-text-main);
    border-radius: var(--u-radius-md);
    font-weight: 500;
    transition: background 0.2s;
}

.mobile-sidebar-nav a:hover,
.mobile-sidebar-nav a.active {
    background: var(--u-color-primary-light);
    color: var(--u-color-primary);
}

.mobile-sidebar-section {
    padding: var(--u-space-4);
    border-top: 1px solid var(--u-color-border);
}

.mobile-sidebar-section h4 {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--u-color-text-light);
    margin-bottom: var(--u-space-3);
}

/* Responsive adjustments for footer */
@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: var(--u-space-6);
    }

    .footer-brand {
        grid-column: 1 / -1;
        max-width: 100%;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--u-space-4);
        text-align: center;
    }

    .article-navigation {
        grid-template-columns: 1fr;
    }

    .article-nav-link.next {
        align-items: flex-start;
        text-align: left;
    }

    .search-trigger {
        min-width: auto;
        padding: var(--u-space-2);
    }

    .search-trigger span,
    .search-trigger kbd {
        display: none;
    }

    .search-modal {
        margin: var(--u-space-4);
        max-height: calc(100vh - 32px);
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }

    .article-feedback-buttons {
        flex-direction: column;
        align-items: center;
    }

    .feedback-btn {
        width: 100%;
        max-width: 200px;
        justify-content: center;
    }
}

/* ===========================
   All Articles Page - Enhanced
   =========================== */

/* Toolbar - Search and Sort */
.articles-toolbar {
    display: flex;
    gap: var(--u-space-4);
    margin-bottom: var(--u-space-6);
    flex-wrap: wrap;
}

.articles-search {
    flex: 1;
    min-width: 280px;
    position: relative;
}

.articles-search-icon {
    position: absolute;
    left: var(--u-space-4);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--u-color-text-light);
    pointer-events: none;
}

.articles-search-input {
    width: 100%;
    padding: var(--u-space-3) var(--u-space-4) var(--u-space-3) var(--u-space-12);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-lg);
    font-size: 1rem;
    background: var(--u-color-bg-main);
    color: var(--u-color-text-main);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.articles-search-input::placeholder {
    color: var(--u-color-text-light);
}

.articles-search-input:focus {
    outline: none;
    border-color: var(--u-color-primary);
    box-shadow: 0 0 0 3px var(--u-color-primary-light);
}

.articles-sort {
    flex-shrink: 0;
}

.articles-sort-select {
    padding: var(--u-space-3) var(--u-space-6) var(--u-space-3) var(--u-space-4);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-lg);
    font-size: 1rem;
    background: var(--u-color-bg-main);
    color: var(--u-color-text-main);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394A3B8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    min-width: 150px;
    transition: border-color 0.2s ease;
}

.articles-sort-select:hover {
    border-color: var(--u-color-border-hover);
}

.articles-sort-select:focus {
    outline: none;
    border-color: var(--u-color-primary);
}

/* Category Filter Tabs */
.articles-filter-tabs {
    display: flex;
    gap: var(--u-space-2);
    margin-bottom: var(--u-space-6);
    flex-wrap: wrap;
    padding-bottom: var(--u-space-4);
    border-bottom: 1px solid var(--u-color-border);
}

.filter-tab {
    padding: var(--u-space-2) var(--u-space-4);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-full);
    background: var(--u-color-bg-main);
    color: var(--u-color-text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.filter-tab:hover {
    border-color: var(--u-color-primary);
    color: var(--u-color-primary);
}

.filter-tab.active {
    background: var(--u-color-primary);
    border-color: var(--u-color-primary);
    color: white;
}

/* Articles Count */
.articles-count {
    font-size: 0.875rem;
    color: var(--u-color-text-light);
    margin-bottom: var(--u-space-4);
}

/* Enhanced Articles Grid */
.articles-grid-enhanced {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--u-space-6);
    margin-bottom: var(--u-space-8);
}

/* Enhanced Article Card */
.article-card-enhanced {
    display: flex;
    flex-direction: column;
    background: var(--u-color-bg-card);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-lg);
    padding: var(--u-space-6);
    text-decoration: none;
    transition: all 0.2s ease;
    position: relative;
}

.article-card-enhanced:hover {
    border-color: var(--u-color-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.article-category-tag {
    display: inline-block;
    padding: var(--u-space-1) var(--u-space-3);
    background: var(--u-color-primary-light);
    color: var(--u-color-primary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--u-radius-full);
    margin-bottom: var(--u-space-3);
    width: fit-content;
}

.article-card-enhanced h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--u-color-text-main);
    margin-bottom: var(--u-space-2);
    line-height: 1.4;
}

.article-description {
    font-size: 1rem;
    color: var(--u-color-text-muted);
    line-height: 1.5;
    margin-bottom: var(--u-space-4);
    flex-grow: 1;
}

.article-card-footer {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    margin-top: auto;
}

.article-read-more {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--u-color-primary);
    transition: transform 0.2s ease;
}

.article-card-enhanced:hover .article-read-more {
    transform: translateX(4px);
}

/* No Results State */
.articles-no-results {
    text-align: center;
    padding: var(--u-space-12) var(--u-space-6);
    background: var(--u-color-bg-secondary);
    border-radius: var(--u-radius-lg);
    margin-bottom: var(--u-space-8);
}

.articles-no-results svg {
    width: 64px;
    height: 64px;
    color: var(--u-color-text-light);
    margin-bottom: var(--u-space-4);
}

.articles-no-results h3 {
    font-size: 1.25rem;
    color: var(--u-color-text-main);
    margin-bottom: var(--u-space-2);
}

.articles-no-results p {
    color: var(--u-color-text-muted);
    font-size: 1rem;
}

/* Support CTA Card */
.support-cta-card {
    text-align: center;
    padding: var(--u-space-8);
    background: var(--u-color-bg-secondary);
    border-radius: var(--u-radius-lg);
    margin-top: var(--u-space-8);
}

.support-cta-card h2 {
    font-size: 1.25rem;
    color: var(--u-color-text-main);
    margin-bottom: var(--u-space-2);
}

.support-cta-card p {
    color: var(--u-color-text-muted);
    margin-bottom: var(--u-space-6);
}

.support-cta-btn {
    display: inline-block;
    padding: var(--u-space-3) var(--u-space-6);
    background: var(--u-color-primary);
    color: white;
    font-weight: 600;
    border-radius: var(--u-radius-md);
    text-decoration: none;
    transition: background-color 0.2s ease;
}

.support-cta-btn:hover {
    background: var(--u-color-primary-dark);
    color: white;
}

/* Responsive: Articles Page */
@media (max-width: 768px) {
    .articles-toolbar {
        flex-direction: column;
    }

    .articles-search {
        min-width: 100%;
    }

    .articles-sort-select {
        width: 100%;
    }

    .articles-filter-tabs {
        gap: var(--u-space-2);
        padding-bottom: var(--u-space-3);
    }

    .filter-tab {
        padding: var(--u-space-2) var(--u-space-3);
        font-size: 0.875rem;
    }

    .articles-grid-enhanced {
        grid-template-columns: 1fr;
        gap: var(--u-space-4);
    }

    .article-card-enhanced {
        padding: var(--u-space-4);
    }

    .support-cta-card {
        padding: var(--u-space-6);
    }
}

/* ===========================
   Videos Page - Enhanced
   =========================== */

/* Toolbar - Search and Sort */
.videos-toolbar {
    display: flex;
    gap: var(--u-space-4);
    margin-bottom: var(--u-space-6);
    flex-wrap: wrap;
}

.videos-search {
    flex: 1;
    min-width: 280px;
    position: relative;
}

.videos-search-icon {
    position: absolute;
    left: var(--u-space-4);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--u-color-text-light);
    pointer-events: none;
}

.videos-search-input {
    width: 100%;
    padding: var(--u-space-3) var(--u-space-4) var(--u-space-3) var(--u-space-12);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-lg);
    font-size: 1rem;
    background: var(--u-color-bg-main);
    color: var(--u-color-text-main);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.videos-search-input::placeholder {
    color: var(--u-color-text-light);
}

.videos-search-input:focus {
    outline: none;
    border-color: var(--u-color-primary);
    box-shadow: 0 0 0 3px var(--u-color-primary-light);
}

.videos-sort {
    flex-shrink: 0;
}

.videos-sort-select {
    padding: var(--u-space-3) var(--u-space-6) var(--u-space-3) var(--u-space-4);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-lg);
    font-size: 1rem;
    background: var(--u-color-bg-main);
    color: var(--u-color-text-main);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394A3B8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    min-width: 150px;
    transition: border-color 0.2s ease;
}

.videos-sort-select:hover {
    border-color: var(--u-color-border-hover);
}

.videos-sort-select:focus {
    outline: none;
    border-color: var(--u-color-primary);
}

/* Category Filter Tabs */
.videos-filter-tabs {
    display: flex;
    gap: var(--u-space-2);
    margin-bottom: var(--u-space-6);
    flex-wrap: wrap;
    padding-bottom: var(--u-space-4);
    border-bottom: 1px solid var(--u-color-border);
}

.video-filter-tab {
    padding: var(--u-space-2) var(--u-space-4);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-full);
    background: var(--u-color-bg-main);
    color: var(--u-color-text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.video-filter-tab:hover {
    border-color: var(--u-color-primary);
    color: var(--u-color-primary);
}

.video-filter-tab.active {
    background: var(--u-color-primary);
    border-color: var(--u-color-primary);
    color: white;
}

/* Videos Count */
.videos-count {
    font-size: 0.875rem;
    color: var(--u-color-text-light);
    margin-bottom: var(--u-space-4);
}

/* Enhanced Videos Grid */
.videos-grid-enhanced {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--u-space-6);
    margin-bottom: var(--u-space-8);
}

/* Enhanced Video Card */
.video-card-enhanced {
    display: flex;
    flex-direction: column;
    background: var(--u-color-bg-card);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-lg);
    overflow: hidden;
    transition: all 0.2s ease;
}

.video-card-enhanced:hover {
    border-color: var(--u-color-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transform: translateY(-2px);
}

.video-thumbnail-enhanced {
    position: relative;
    width: 100%;
    aspect-ratio: 16/9;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    overflow: hidden;
}

.video-thumbnail-enhanced video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-play-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s ease;
    pointer-events: none;
}

.video-play-overlay svg {
    width: 24px;
    height: 24px;
    color: var(--u-color-primary);
    margin-left: 3px;
}

.video-card-enhanced:hover .video-play-overlay {
    opacity: 1;
}

.video-info-enhanced {
    padding: var(--u-space-4);
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.video-category-tag {
    display: inline-block;
    padding: var(--u-space-1) var(--u-space-3);
    background: var(--u-color-primary-light);
    color: var(--u-color-primary);
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: var(--u-radius-full);
    margin-bottom: var(--u-space-2);
    width: fit-content;
}

.video-info-enhanced h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--u-color-text-main);
    margin-bottom: var(--u-space-2);
    line-height: 1.4;
}

.video-description-text {
    font-size: 0.875rem;
    color: var(--u-color-text-muted);
    line-height: 1.5;
    flex-grow: 1;
}

/* No Results State */
.videos-no-results {
    text-align: center;
    padding: var(--u-space-12) var(--u-space-6);
    background: var(--u-color-bg-secondary);
    border-radius: var(--u-radius-lg);
    margin-bottom: var(--u-space-8);
}

.videos-no-results svg {
    width: 64px;
    height: 64px;
    color: var(--u-color-text-light);
    margin-bottom: var(--u-space-4);
}

.videos-no-results h3 {
    font-size: 1.25rem;
    color: var(--u-color-text-main);
    margin-bottom: var(--u-space-2);
}

.videos-no-results p {
    color: var(--u-color-text-muted);
    font-size: 1rem;
}

/* Responsive: Videos Page */
@media (max-width: 1024px) {
    .videos-grid-enhanced {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .videos-toolbar {
        flex-direction: column;
    }

    .videos-search {
        min-width: 100%;
    }

    .videos-sort-select {
        width: 100%;
    }

    .videos-filter-tabs {
        gap: var(--u-space-2);
        padding-bottom: var(--u-space-3);
    }

    .video-filter-tab {
        padding: var(--u-space-2) var(--u-space-3);
        font-size: 0.875rem;
    }

    .videos-grid-enhanced {
        grid-template-columns: 1fr;
        gap: var(--u-space-4);
    }
}

/* ====================================
   FEEDBACK SYSTEM STYLES
   ==================================== */

/* Passphrase Modal */
.feedback-passphrase-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    backdrop-filter: blur(4px);
}

.feedback-passphrase-content {
    background: var(--u-color-bg-main);
    padding: var(--u-space-8);
    border-radius: var(--u-radius-lg);
    box-shadow: var(--u-shadow-xl);
    max-width: 400px;
    width: 90%;
}

.feedback-passphrase-content h3 {
    margin: 0 0 var(--u-space-2) 0;
    font-size: 1.25rem;
    color: var(--u-color-text-main);
}

.feedback-passphrase-content p {
    margin: 0 0 var(--u-space-4) 0;
    color: var(--u-color-text-muted);
    font-size: 1rem;
}

.feedback-passphrase-input {
    width: 100%;
    padding: var(--u-space-3) var(--u-space-4);
    border: 2px solid var(--u-color-border);
    border-radius: var(--u-radius-md);
    font-size: 1rem;
    font-family: var(--u-font-sans);
    margin-bottom: var(--u-space-2);
    transition: border-color 0.2s;
}

.feedback-passphrase-input:focus {
    outline: none;
    border-color: var(--u-color-primary);
}

.feedback-passphrase-error {
    color: #EF4444;
    font-size: 0.875rem;
    min-height: 20px;
    margin-bottom: var(--u-space-3);
}

.feedback-passphrase-buttons {
    display: flex;
    gap: var(--u-space-3);
    justify-content: flex-end;
}

.feedback-passphrase-cancel,
.feedback-passphrase-submit {
    padding: var(--u-space-3) var(--u-space-6);
    border-radius: var(--u-radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.feedback-passphrase-cancel {
    background: var(--u-color-bg-secondary);
    color: var(--u-color-text-muted);
}

.feedback-passphrase-cancel:hover {
    background: var(--u-color-border);
}

.feedback-passphrase-submit {
    background: var(--u-color-primary);
    color: white;
}

.feedback-passphrase-submit:hover {
    background: var(--u-color-primary-dark);
}

/* Feedback Mode Badge */
.feedback-mode-badge {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--u-color-primary);
    color: white;
    padding: var(--u-space-2) var(--u-space-4);
    border-radius: var(--u-radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    z-index: 9999;
    display: none;
    align-items: center;
    gap: var(--u-space-2);
    box-shadow: var(--u-shadow-lg);
}

.feedback-mode-close {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    line-height: 1;
    transition: background 0.2s;
}

.feedback-mode-close:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* Selection Tooltip */
.feedback-selection-tooltip {
    position: absolute;
    z-index: 9998;
    animation: fadeInUp 0.2s ease;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(4px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feedback-add-comment-btn {
    background: var(--u-color-primary);
    color: white;
    border: none;
    padding: var(--u-space-2) var(--u-space-4);
    border-radius: var(--u-radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--u-space-2);
    box-shadow: var(--u-shadow-md);
    transition: all 0.2s;
}

.feedback-add-comment-btn:hover {
    background: var(--u-color-primary-dark);
    transform: translateY(-1px);
    box-shadow: var(--u-shadow-lg);
}

/* Highlight Styles */
.feedback-highlight {
    background: #FEF3C7;
    cursor: pointer;
    padding: 0;
    margin: 0;
    border: none;
    text-decoration: underline wavy #F59E0B;
    text-decoration-thickness: 2px;
    text-underline-offset: 2px;
    transition: background 0.2s;
}

.feedback-highlight:hover {
    background: #FDE68A;
}

/* Comment Modal */
.feedback-comment-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    backdrop-filter: blur(4px);
}

.feedback-comment-content {
    background: var(--u-color-bg-main);
    border-radius: var(--u-radius-lg);
    box-shadow: var(--u-shadow-xl);
    max-width: 500px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
}

.feedback-comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--u-space-6);
    border-bottom: 1px solid var(--u-color-border);
}

.feedback-comment-header h3 {
    margin: 0;
    font-size: 1.125rem;
    color: var(--u-color-text-main);
}

.feedback-comment-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--u-color-text-muted);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--u-radius-md);
    transition: all 0.2s;
}

.feedback-comment-close:hover {
    background: var(--u-color-bg-secondary);
    color: var(--u-color-text-main);
}

.feedback-selected-text {
    padding: var(--u-space-6);
    background: var(--u-color-bg-secondary);
    border-left: 3px solid var(--u-color-primary);
}

.feedback-selected-text strong {
    display: block;
    font-size: 0.875rem;
    color: var(--u-color-text-muted);
    margin-bottom: var(--u-space-2);
}

.feedback-selected-text p {
    margin: 0;
    font-style: italic;
    color: var(--u-color-text-main);
    line-height: 1.5;
}

.feedback-comment-textarea {
    width: 100%;
    padding: var(--u-space-4);
    border: none;
    font-size: 1rem;
    font-family: var(--u-font-sans);
    resize: vertical;
    min-height: 120px;
    color: var(--u-color-text-main);
}

.feedback-comment-textarea:focus {
    outline: none;
}

.feedback-comment-footer {
    display: flex;
    gap: var(--u-space-3);
    justify-content: flex-end;
    padding: var(--u-space-6);
    border-top: 1px solid var(--u-color-border);
}

.feedback-comment-cancel,
.feedback-comment-save {
    padding: var(--u-space-3) var(--u-space-6);
    border-radius: var(--u-radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.feedback-comment-cancel {
    background: var(--u-color-bg-secondary);
    color: var(--u-color-text-muted);
}

.feedback-comment-cancel:hover {
    background: var(--u-color-border);
}

.feedback-comment-save {
    background: var(--u-color-primary);
    color: white;
}

.feedback-comment-save:hover {
    background: var(--u-color-primary-dark);
}

/* Comment Popover */
.feedback-comment-popover {
    position: absolute;
    background: var(--u-color-bg-main);
    border: 1px solid var(--u-color-border);
    border-radius: var(--u-radius-lg);
    box-shadow: var(--u-shadow-lg);
    padding: var(--u-space-4);
    max-width: 350px;
    z-index: 9997;
    animation: fadeInUp 0.2s ease;
}

.feedback-popover-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--u-space-3);
}

.feedback-popover-header strong {
    color: var(--u-color-text-main);
    font-size: 1rem;
}

.feedback-popover-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--u-color-text-muted);
    cursor: pointer;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--u-radius-sm);
    transition: all 0.2s;
}

.feedback-popover-close:hover {
    background: var(--u-color-bg-secondary);
}

.feedback-popover-text {
    padding: var(--u-space-2);
    background: var(--u-color-bg-secondary);
    border-radius: var(--u-radius-md);
    font-size: 0.875rem;
    font-style: italic;
    color: var(--u-color-text-muted);
    margin-bottom: var(--u-space-3);
}

.feedback-popover-comment {
    font-size: 1rem;
    color: var(--u-color-text-main);
    line-height: 1.5;
    margin-bottom: var(--u-space-3);
}

.feedback-popover-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--u-color-text-light);
    margin-bottom: var(--u-space-4);
    padding-top: var(--u-space-2);
    border-top: 1px solid var(--u-color-border);
}

.feedback-popover-actions {
    display: flex;
    gap: var(--u-space-2);
}

.feedback-popover-resolve,
.feedback-popover-delete {
    flex: 1;
    padding: var(--u-space-2) var(--u-space-3);
    border-radius: var(--u-radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.feedback-popover-resolve {
    background: #10B981;
    color: white;
}

.feedback-popover-resolve:hover {
    background: #059669;
}

.feedback-popover-delete {
    background: var(--u-color-bg-secondary);
    color: var(--u-color-text-muted);
}

.feedback-popover-delete:hover {
    background: #EF4444;
    color: white;
}

/* Export Button */
.feedback-export-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--u-color-primary);
    color: white;
    border: none;
    padding: var(--u-space-4) var(--u-space-6);
    border-radius: var(--u-radius-full);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: none;
    align-items: center;
    gap: var(--u-space-2);
    box-shadow: var(--u-shadow-lg);
    z-index: 9999;
    transition: all 0.2s;
}

.feedback-export-btn:hover {
    background: var(--u-color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 12px 24px -4px rgba(0, 87, 255, 0.3);
}

.feedback-export-btn svg {
    flex-shrink: 0;
}

/* Import Button */
.feedback-import-btn {
    position: fixed;
    bottom: 30px;
    right: 220px; /* Positioned to the left of export button */
    background: white;
    color: var(--u-color-primary);
    border: 1px solid var(--u-color-border);
    padding: var(--u-space-4) var(--u-space-6);
    border-radius: var(--u-radius-full);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: none;
    align-items: center;
    gap: var(--u-space-2);
    box-shadow: var(--u-shadow-lg);
    z-index: 9999;
    transition: all 0.2s;
}

.feedback-import-btn:hover {
    border-color: var(--u-color-primary);
    background: var(--u-color-bg-secondary);
    transform: translateY(-2px);
    box-shadow: 0 12px 24px -4px rgba(0, 87, 255, 0.15);
}

.feedback-import-btn svg {
    flex-shrink: 0;
}

/* Notification */
.feedback-notification {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--u-color-text-main);
    color: white;
    padding: var(--u-space-4) var(--u-space-6);
    border-radius: var(--u-radius-lg);
    font-size: 1rem;
    box-shadow: var(--u-shadow-xl);
    z-index: 10001;
    opacity: 0;
    transition: all 0.3s ease;
    max-width: 90%;
    text-align: center;
}

.feedback-notification.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.feedback-notification-success {
    background: #10B981;
}

.feedback-notification-warning {
    background: #F59E0B;
}

.feedback-notification-error {
    background: #EF4444;
}

/* Responsive */
@media (max-width: 768px) {
    .feedback-mode-badge {
        top: 10px;
        right: 10px;
        font-size: 0.75rem;
        padding: var(--u-space-1) var(--u-space-3);
    }

    .feedback-export-btn {
        bottom: 20px;
        right: 20px;
        padding: var(--u-space-3) var(--u-space-4);
        font-size: 0.875rem;
    }

    .feedback-comment-popover {
        max-width: calc(100vw - 40px);
        left: 20px !important;
        right: 20px;
    }
}

/* Override focus styles for all cards - placed at end for highest priority */
.topic-card:focus,
.topic-card:focus-visible,
.popular-article-card:focus,
.popular-article-card:focus-visible,
.article-card:focus,
.article-card:focus-visible,
.article-card-enhanced:focus,
.article-card-enhanced:focus-visible,
.related-article-card:focus,
.related-article-card:focus-visible {
    outline: 0 !important;
    outline-style: none !important;
    outline-width: 0 !important;
    outline-offset: 0 !important;
    border: 1px solid var(--u-color-primary) !important;
}