/**
 * Podpisal.ru - Article Styles
 * Стили для страниц статей блога
 */

/* ============================================
   Articles List Page
   ============================================ */

.section--breadcrumbs {
    padding: var(--spacing-md) 0;
}

.section--articles-header {
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
}

.articles-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
}

.articles-header__title {
    margin-bottom: var(--spacing-md);
}

.articles-header__description {
    margin-bottom: 0;
}

/* Category Filter */
.articles-filter {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) 0;
}

.articles-filter__item {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
    text-decoration: none;
}

.articles-filter__item:hover {
    color: var(--color-primary);
    background-color: var(--color-bg-secondary);
}

.articles-filter__item.is-active {
    color: white;
    background-color: var(--color-primary);
}

/* Articles Grid */
.section--articles-grid {
    padding-top: 0;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.articles-empty {
    text-align: center;
    padding: var(--spacing-4xl) 0;
    color: var(--color-text-secondary);
}

.articles-empty p {
    margin-bottom: var(--spacing-lg);
}

/* Article Card */
.article-card {
    background-color: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-fast);
}

.article-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.article-card__image {
    display: block;
    aspect-ratio: 16 / 9;
    overflow: hidden;
}

.article-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.article-card:hover .article-card__image img {
    transform: scale(1.05);
}

.article-card__content {
    padding: var(--spacing-lg);
}

.article-card__category {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.article-card__title {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
    line-height: var(--line-height-tight);
}

.article-card__title a {
    color: var(--color-text);
    text-decoration: none;
}

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

.article-card__excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-relaxed);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.article-card__meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.article-card__meta > * {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.article-card__meta::before {
    display: none;
}

.article-card__date::before {
    content: '';
}

.article-card__read-time::before {
    content: '';
    width: 4px;
    height: 4px;
    background-color: var(--color-text-muted);
    border-radius: 50%;
    margin-right: var(--spacing-sm);
}

/* ============================================
   Single Article Page
   ============================================ */

.article {
    padding-top: var(--spacing-lg);
    padding-bottom: var(--spacing-3xl);
}

.article__header {
    max-width: 800px;
    margin: 0 auto var(--spacing-2xl);
    text-align: center;
}

.article__category {
    display: inline-block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    text-decoration: none;
}

.article__category:hover {
    color: var(--color-primary-dark);
}

.article__title {
    font-size: var(--font-size-4xl);
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.article__meta {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.article__meta > *::before {
    display: none;
}

.article__read-time::before {
    content: '';
    width: 4px;
    height: 4px;
    background-color: var(--color-text-muted);
    border-radius: 50%;
    margin-right: var(--spacing-sm);
    display: inline-block;
    vertical-align: middle;
}

.article__excerpt {
    max-width: 600px;
    margin: 0 auto;
}

/* Article Layout with Sidebar */
.article__layout {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-2xl);
    max-width: 900px;
    margin: 0 auto;
}

@media (min-width: 1024px) {
    .article__layout {
        grid-template-columns: 220px 1fr;
        max-width: 1100px;
    }
}

/* Sidebar CTA Block */
.sidebar-cta {
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-cta__content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.sidebar-cta__icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
}

.sidebar-cta__icon svg {
    width: 100%;
    height: 100%;
}

/* Pen animation */
.sidebar-cta__pen {
    animation: penMove 2s ease-in-out infinite;
    transform-origin: 34px 24px;
}

@keyframes penMove {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-4px, 2px) rotate(-10deg); }
}

/* Signature draw animation */
.sidebar-cta__sign {
    stroke-dasharray: 30;
    stroke-dashoffset: 30;
    animation: drawSign 2s ease-in-out infinite;
}

@keyframes drawSign {
    0%, 20% { stroke-dashoffset: 30; }
    60%, 100% { stroke-dashoffset: 0; }
}

.sidebar-cta__text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar-cta__title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: white;
}

.sidebar-cta__subtitle {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.7);
}

.sidebar-cta__btn {
    display: block;
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    color: white;
    font-size: var(--font-size-sm);
    font-weight: 600;
    padding: 10px var(--spacing-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    text-align: center;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.3);
}

.sidebar-cta__btn:hover {
    background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(245, 158, 11, 0.4);
    color: white;
}

@media (max-width: 1023px) {
    .sidebar-cta {
        display: none;
    }
}

/* Table of Contents */
.article__sidebar {
    order: 2;
}

@media (min-width: 1024px) {
    .article__sidebar {
        order: 1;
        position: sticky;
        top: calc(var(--header-height) + var(--spacing-lg));
        align-self: start;
    }
}

.article-toc {
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.article-toc__title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.article-toc__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.article-toc__item {
    line-height: var(--line-height-normal);
}

.article-toc__item--level-3 {
    padding-left: var(--spacing-md);
}

.article-toc__link {
    display: block;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    padding: var(--spacing-xs) 0;
    border-left: 2px solid transparent;
    padding-left: var(--spacing-sm);
    transition: all var(--transition-fast);
}

.article-toc__link:hover {
    color: var(--color-primary);
    border-left-color: var(--color-primary);
}

.article-toc__link.is-active {
    color: var(--color-primary);
    border-left-color: var(--color-primary);
    font-weight: 500;
}

/* Article Content */
.article__content {
    order: 1;
    min-width: 0;
}

@media (min-width: 1024px) {
    .article__content {
        order: 2;
    }
}

.article__featured-image {
    margin-bottom: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.article__featured-image img {
    width: 100%;
    height: auto;
}

/* Article Body - Typography */
.article__body {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-text);
}

.article__body > * {
    margin-bottom: var(--spacing-lg);
}

.article__body > *:last-child {
    margin-bottom: 0;
}

.article__body h2 {
    font-size: var(--font-size-2xl);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-md);
    padding-top: var(--spacing-md);
}

.article__body h3 {
    font-size: var(--font-size-xl);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
}

.article__body h2:first-child,
.article__body h3:first-child {
    margin-top: 0;
    padding-top: 0;
}

.article__body p {
    margin-bottom: var(--spacing-md);
}

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

.article__body a:hover {
    color: var(--color-primary-dark);
}

.article__body strong {
    font-weight: 600;
    color: var(--color-text);
}

.article__body ul,
.article__body ol {
    padding-left: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.article__body ul {
    list-style-type: disc;
}

.article__body ol {
    list-style-type: decimal;
}

.article__body li {
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-sm);
}

.article__body li::marker {
    color: var(--color-primary);
}

.article__body blockquote {
    border-left: 4px solid var(--color-primary);
    padding-left: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    font-style: italic;
    color: var(--color-text-secondary);
}

.article__body blockquote p {
    margin-bottom: 0;
}

.article__body img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin: var(--spacing-lg) 0;
}

.article__body figure {
    margin: var(--spacing-xl) 0;
}

.article__body figcaption {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-align: center;
    margin-top: var(--spacing-sm);
}

.article__body code {
    font-family: 'SF Mono', Monaco, 'Courier New', monospace;
    font-size: 0.9em;
    background-color: var(--color-bg-tertiary);
    padding: 0.2em 0.4em;
    border-radius: var(--radius-sm);
}

.article__body pre {
    background-color: var(--color-bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
}

.article__body pre code {
    background-color: transparent;
    padding: 0;
}

/* Article Tables */
.article__body table {
    width: 100%;
    border-collapse: collapse;
    margin: var(--spacing-xl) 0;
    font-size: var(--font-size-base);
}

.article__body thead {
    background-color: var(--color-bg-tertiary);
}

.article__body th,
.article__body td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border: 1px solid var(--color-border);
}

.article__body th {
    font-weight: 600;
}

.article__body tbody tr:hover {
    background-color: var(--color-bg-secondary);
}

/* ============================================
   Related Articles
   ============================================ */

.section--related {
    background-color: var(--color-bg-secondary);
}

.section__title {
    margin-bottom: var(--spacing-2xl);
}

.related-articles {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

/* Vertical card layout for related articles */
.article-card--horizontal {
    display: flex;
    flex-direction: column;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.article-card--horizontal:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}

.article-card--horizontal .article-card__image {
    aspect-ratio: 1200 / 630;
    overflow: hidden;
}

.article-card--horizontal .article-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.article-card--horizontal:hover .article-card__image img {
    transform: scale(1.03);
}

.article-card--horizontal .article-card__content {
    padding: var(--spacing-lg);
}

.article-card--horizontal .article-card__category {
    margin-bottom: var(--spacing-sm);
}

.article-card--horizontal .article-card__title {
    font-size: var(--font-size-lg);
    line-height: 1.3;
    margin-bottom: var(--spacing-sm);
}

.article-card--horizontal .article-card__title a {
    color: var(--color-text);
    text-decoration: none;
}

.article-card--horizontal .article-card__title a:hover {
    color: var(--color-primary);
}

.article-card--horizontal .article-card__meta {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

@media (max-width: 992px) {
    .related-articles {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .related-articles {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   CTA Section in Article
   ============================================ */

.section--cta {
    padding: var(--spacing-xl) 0;
}

.section--cta .cta-block {
    margin: 0;
}

/* ============================================
   Responsive Adjustments
   ============================================ */

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

    .article__title {
        font-size: var(--font-size-3xl);
    }

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

    .article__body h2 {
        font-size: var(--font-size-xl);
    }

    .article__body h3 {
        font-size: var(--font-size-lg);
    }

    .article-toc {
        display: none;
    }

    .article__body table {
        font-size: var(--font-size-sm);
    }

    .article__body th,
    .article__body td {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

@media (max-width: 480px) {
    .articles-filter {
        gap: var(--spacing-xs);
    }

    .articles-filter__item {
        padding: var(--spacing-xs) var(--spacing-md);
        font-size: var(--font-size-xs);
    }

    .article__meta {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .article__read-time::before {
        display: none;
    }
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
    .article-toc,
    .section--cta,
    .section--related,
    .header,
    .footer,
    .breadcrumbs {
        display: none !important;
    }

    .article {
        padding: 0;
    }

    .article__title {
        font-size: 24pt;
    }

    .article__body {
        font-size: 12pt;
    }

    .article__body a {
        text-decoration: none;
        color: inherit;
    }

    .article__body a[href]::after {
        content: " (" attr(href) ")";
        font-size: 10pt;
        color: #666;
    }
}

/* ============================================
   Interactive Components
   ============================================ */

/* Comparison Cards */
.comparison-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.comparison-card {
    position: relative;
    background: var(--color-bg);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-fast);
}

.comparison-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.comparison-card--recommended {
    border-color: var(--color-primary);
    background: linear-gradient(to bottom, rgba(26, 86, 219, 0.03), transparent);
}

.comparison-card__badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--color-primary);
    color: white;
    font-size: 11px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.comparison-card__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.comparison-card__rating {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.comparison-card__rating .stars {
    color: #f59e0b;
    letter-spacing: 2px;
}

.comparison-card__rating .score {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.comparison-card__features {
    list-style: none;
    padding: 0;
    margin: 0 0 var(--spacing-md) 0;
}

.comparison-card__features li {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) 0;
}

.comparison-card__features li::before {
    flex-shrink: 0;
    font-size: 14px;
    line-height: 1.4;
}

.comparison-card__features li.pro::before {
    content: '✓';
    color: #10b981;
}

.comparison-card__features li.con::before {
    content: '−';
    color: #f59e0b;
}

.comparison-card__btn {
    display: block;
    text-align: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--color-primary);
    color: white;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 500;
    font-size: var(--font-size-sm);
    transition: all var(--transition-fast);
}

.comparison-card__btn:hover {
    background: var(--color-primary-dark);
}

/* Article Calculator */
.article-calculator {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.article-calculator__title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.article-calculator__title::before {
    content: '🧮';
}

.article-calculator__form {
    margin-bottom: var(--spacing-lg);
}

.article-calculator__form label {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.article-calculator__form label span {
    font-weight: 500;
}

.article-calculator__form input[type="number"],
.article-calculator__form input[type="range"] {
    flex: 1;
    min-width: 100px;
    max-width: 150px;
}

.article-calculator__form input[type="number"] {
    padding: var(--spacing-sm);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-lg);
    text-align: center;
}

.article-calculator__result {
    display: grid;
    gap: var(--spacing-sm);
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
    background: white;
    border-radius: var(--radius-md);
}

.result-item .label {
    color: var(--color-text-secondary);
}

.result-item .value {
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.result-item--highlight {
    background: linear-gradient(135deg, #1a56db 0%, #3b82f6 100%);
    color: white;
}

.result-item--highlight .label {
    color: rgba(255, 255, 255, 0.9);
}

.result-item .savings {
    font-size: var(--font-size-xs);
    background: rgba(255, 255, 255, 0.2);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    margin-left: var(--spacing-sm);
}

/* Checklist */
.article-checklist {
    background: var(--color-bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
}

.article-checklist__title {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.checklist-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.checklist-item:hover {
    color: var(--color-primary);
}

.checklist-item input[type="checkbox"] {
    display: none;
}

.checklist-item .checkmark {
    width: 22px;
    height: 22px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.checklist-item .checkmark::after {
    content: '✓';
    color: white;
    font-size: 14px;
    opacity: 0;
    transform: scale(0);
    transition: all var(--transition-fast);
}

.checklist-item input:checked + .checkmark {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.checklist-item input:checked + .checkmark::after {
    opacity: 1;
    transform: scale(1);
}

.checklist-item input:checked ~ .text {
    text-decoration: line-through;
    color: var(--color-text-secondary);
}

.checklist-progress {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

.checklist-progress__bar {
    height: 6px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
    margin-bottom: var(--spacing-xs);
}

.checklist-progress__text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* Process Animation */
.article-process {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.article-process__title {
    color: white;
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.process-animation {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
}

.process-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.process-step__icon {
    width: 56px;
    height: 56px;
    background: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pulse 2s ease-in-out infinite;
}

.process-step:nth-child(1) .process-step__icon { animation-delay: 0s; }
.process-step:nth-child(2) .process-step__icon { animation-delay: 0.5s; }
.process-step:nth-child(3) .process-step__icon { animation-delay: 1s; }

@keyframes pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(255,255,255,0.4); }
    50% { transform: scale(1.05); box-shadow: 0 0 0 8px rgba(255,255,255,0); }
}

.process-step__label {
    color: rgba(255, 255, 255, 0.9);
    font-size: 12px;
    text-align: center;
}

.process-arrow {
    color: rgba(255, 255, 255, 0.5);
    font-size: 20px;
    animation: arrowMove 1.5s ease-in-out infinite;
}

@keyframes arrowMove {
    0%, 100% { transform: translateX(0); opacity: 0.5; }
    50% { transform: translateX(4px); opacity: 1; }
}

/* Inline CTA */
.article-cta-inline {
    background: linear-gradient(135deg, rgba(26, 86, 219, 0.05) 0%, rgba(59, 130, 246, 0.1) 100%);
    border-left: 4px solid var(--color-primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    padding: var(--spacing-md) var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.article-cta-inline p {
    margin: 0;
    font-weight: 500;
}

.article-cta-inline .btn {
    white-space: nowrap;
}

/* Reading Progress Bar */
.reading-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 0%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary), #3b82f6);
    z-index: 1000;
    transition: width 0.1s linear;
}

/* Interactive Table */
.article__body table th[data-sort] {
    cursor: pointer;
    user-select: none;
}

.article__body table th[data-sort]:hover {
    background: var(--color-bg-secondary);
}

.article__body table th[data-sort]::after {
    content: ' ↕';
    opacity: 0.3;
    font-size: 12px;
}

.article__body table th[data-sort].sort-asc::after {
    content: ' ↑';
    opacity: 1;
}

.article__body table th[data-sort].sort-desc::after {
    content: ' ↓';
    opacity: 1;
}

.article__body table tr.highlight {
    background: linear-gradient(90deg, rgba(26, 86, 219, 0.08), transparent);
}

.article__body table tr.highlight td:first-child {
    font-weight: 600;
    color: var(--color-primary);
}

/* ============================================
   Inline Related Links
   ============================================ */

.article-related-inline {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-left: 3px solid var(--color-primary);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.article-related-inline__label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.article-related-inline a {
    font-weight: 500;
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.article-related-inline a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* Separator handled in HTML with · character */

/* Multiple links layout */
.article-related-inline--list {
    padding: var(--spacing-lg);
}

.article-related-inline--list ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.article-related-inline--list li {
    margin-bottom: var(--spacing-xs);
    padding-left: var(--spacing-md);
    position: relative;
}

.article-related-inline--list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary);
}

/* ============================================
   Article Quiz Component
   ============================================ */

.article-quiz {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    border-radius: var(--radius-lg);
    border: 1px solid #bae6fd;
}

.article-quiz__title {
    margin: 0 0 var(--spacing-xs) 0;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
}

.article-quiz__description {
    margin: 0 0 var(--spacing-lg) 0;
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
}

.quiz-container {
    background: #fff;
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.quiz-step {
    animation: fadeIn 0.3s ease;
}

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

.quiz-progress {
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.quiz-progress::before {
    content: '';
    display: block;
    height: 6px;
    background: #e2e8f0;
    border-radius: 3px;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
}

.quiz-progress__bar {
    height: 6px;
    background: var(--color-primary);
    border-radius: 3px;
    transition: width 0.3s ease;
    position: relative;
    z-index: 1;
    margin-bottom: var(--spacing-xs);
}

.quiz-progress__text {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
    display: block;
}

.quiz-question {
    margin: 0 0 var(--spacing-md) 0;
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.quiz-option {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    margin: 0;
}

.quiz-option:hover {
    border-color: var(--color-primary);
    background: #f0f9ff;
}

.quiz-option input[type="radio"] {
    width: 20px;
    height: 20px;
    margin: 0 var(--spacing-sm) 0 0;
    accent-color: var(--color-primary);
    flex-shrink: 0;
}

.quiz-option__text {
    font-size: var(--font-size-base);
    color: var(--color-text);
    line-height: 1.4;
}

.quiz-option:has(input:checked) {
    border-color: var(--color-primary);
    background: #dbeafe;
}

.quiz-next,
.quiz-submit,
.quiz-restart {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: #fff;
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
}

.quiz-next:hover:not(:disabled),
.quiz-submit:hover,
.quiz-restart:hover {
    background: var(--color-primary-dark);
    transform: translateY(-1px);
}

.quiz-next:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.quiz-result {
    text-align: center;
    padding: var(--spacing-lg);
    animation: fadeIn 0.4s ease;
}

.quiz-result__icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 40px;
}

.quiz-result__icon::before {
    content: '✓';
    color: #fff;
}

.quiz-result__title {
    margin: 0 0 var(--spacing-sm) 0;
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-text);
}

.quiz-result__description {
    margin: 0 0 var(--spacing-md) 0;
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.quiz-result__details {
    background: #f8fafc;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    text-align: left;
}

.quiz-result__details ul {
    margin: 0;
    padding: 0 0 0 var(--spacing-md);
}

.quiz-result__details li {
    margin-bottom: var(--spacing-xs);
    color: var(--color-text-secondary);
}

.quiz-restart {
    background: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.quiz-restart:hover {
    background: var(--color-primary);
    color: #fff;
}

/* ============================================
   Article FAQ Accordion
   ============================================ */

.article-faq {
    margin: var(--spacing-xl) 0;
}

.faq-item {
    margin-bottom: var(--spacing-sm);
    background: #fff;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: box-shadow 0.2s ease;
}

.faq-item:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.faq-item__question {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    background: #f8fafc;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: all 0.2s ease;
}

.faq-item__question:hover {
    background: #f1f5f9;
    color: var(--color-primary);
}

.faq-item__question .icon {
    font-size: var(--font-size-lg);
    font-weight: 400;
    color: var(--color-primary);
    transition: transform 0.3s ease;
    flex-shrink: 0;
    margin-left: var(--spacing-md);
}

.faq-item.is-open .faq-item__question {
    background: var(--color-primary);
    color: #fff;
}

.faq-item.is-open .faq-item__question .icon {
    color: #fff;
    transform: rotate(45deg);
}

.faq-item__answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.is-open .faq-item__answer {
    max-height: 500px;
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
}

.faq-item__answer p {
    margin: 0;
    color: var(--color-text-secondary);
    line-height: 1.7;
}

.faq-item__answer p + p {
    margin-top: var(--spacing-sm);
}

/* ============================================
   Article Checklist Enhanced
   ============================================ */

.article-checklist {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, #f0fdf4 0%, #dcfce7 100%);
    border-radius: var(--radius-lg);
    border: 1px solid #86efac;
}

.article-checklist__title {
    margin: 0 0 var(--spacing-md) 0;
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text);
}

.checklist-item {
    display: flex;
    align-items: flex-start;
    padding: var(--spacing-sm) 0;
    cursor: pointer;
    transition: opacity 0.2s ease;
}

.checklist-item input[type="checkbox"] {
    width: 22px;
    height: 22px;
    margin: 0 var(--spacing-sm) 0 0;
    accent-color: #22c55e;
    flex-shrink: 0;
}

.checklist-item .text {
    font-size: var(--font-size-base);
    color: var(--color-text);
    line-height: 1.5;
}

.checklist-item:has(input:checked) .text {
    color: var(--color-text-muted);
    text-decoration: line-through;
}

.checklist-progress {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid #86efac;
}

.checklist-progress__bar {
    height: 8px;
    background: #22c55e;
    border-radius: 4px;
    transition: width 0.3s ease;
    margin-bottom: var(--spacing-xs);
}

.checklist-progress__text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.article-checklist.is-completed {
    background: linear-gradient(135deg, #dcfce7 0%, #bbf7d0 100%);
}

.article-checklist.is-completed .checklist-progress__text::after {
    content: ' ✓';
    color: #22c55e;
}