/* ===================================
   CONTENT.CSS - Article Content Styles
   Mobile-First Approach
   Styles for content inside <main> tag
   =================================== */

/* ===================================
   ARTICLE CONTAINER
   =================================== */
.article {
    max-width: var(--container-width-lg);
    margin: 0 auto;
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-2xl);
    background-color: var(--color-bg-primary);
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.08);
}

/* ===================================
   ARTICLE HEADER
   =================================== */
.article__header {
    margin-bottom: var(--spacing-2xl);
}

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

.article__category {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-primary);
    color: white;
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

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

.article__title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
}

.article__excerpt {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xl);
    padding-left: var(--spacing-md);
    border-left: 4px solid var(--color-primary);
}

/* Author Info */
.article__author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background-color: var(--color-bg-secondary);
    border-radius: 32px;
}

.author__avatar {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-full);
    object-fit: cover;
    border: 3px solid white;
    box-shadow: var(--shadow-md);
    flex-shrink: 0;
}

.author__info {
    flex: 1;
}

.author__name {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
}

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

/* ===================================
   FEATURED IMAGE
   =================================== */
.article__featured-image {
    margin: var(--spacing-2xl) 0;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.article__featured-image img {
    width: 100%;
    height: auto;
    display: block;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.article__image-caption {
    padding: var(--spacing-md);
    background-color: var(--color-bg-secondary);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-align: center;
    font-style: italic;
}

/* ===================================
   ARTICLE BODY
   =================================== */
.article__body {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-primary);
}

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

.article__section:last-child {
    margin-bottom: 0;
}

/* Lead paragraph */
.article__lead {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xl);
    font-weight: var(--font-weight-medium);
}

/* Paragraphs */
.article__body p {
    margin-bottom: var(--spacing-lg);
    text-align: justify;
}

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

/* Headings in article */
.article__heading {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-lg);
    line-height: var(--line-height-tight);
    scroll-margin-top: 100px;
}

.article__heading::before {
    content: '';
    display: block;
    width: 40px;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-full);
}

/* Lists */
.article__list,
.article__numbered-list {
    padding-left: var(--spacing-sm);
}

.article__list {
    list-style: none;
}

.article__list li {
    position: relative;
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.article__list li::before {
    content: '-';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

.article__numbered-list {
    list-style: none;
    counter-reset: list-counter;
}

.article__numbered-list li {
    position: relative;
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-xl);
    counter-increment: list-counter;
}

.article__numbered-list li::before {
    content: counter(list-counter);
    position: absolute;
    left: 0;
    top: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    color: white;
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-full);
}

/* Highlight Box */
.article__highlight-box {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-xl);
    background-color: var(--color-bg-secondary);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
}

.highlight-box__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.highlight-box__title::before {
    content: 'NOTE:';
    font-size: var(--font-size-2xl);
}

.highlight-box__content ul {
    list-style: none;
    padding: 0;
}

.highlight-box__content li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.highlight-box__content li::before {
    content: '-';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: var(--font-weight-bold);
}


/* Download Section */
.download-section {
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-xl);
    background-color: var(--color-bg-secondary);
    border-radius: 32px;
}

.download-section__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.download-buttons {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

.download-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #DC3545;
    border-radius: 32px;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    min-height: 120px;
}

.download-button:hover {
    background-color: #C82333;
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.download-button:active {
    transform: translateY(-2px);
}

.download-button__icon {
    margin-bottom: var(--spacing-md);
    width: 32px;
    height: 32px;
}

.download-button__text {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    text-align: center;
    margin: 0;
    color: white;
}

/* ===================================
   ARTICLE FOOTER
   =================================== */
.article__footer {
    margin-top: var(--spacing-xl);
    border-top: 2px solid var(--color-border);
}

/* Tags */
.article__tags {
    margin-bottom: var(--spacing-xl);
}

.tags__title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.tags__list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    list-style: none;
    padding: 0;
}

.tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-full);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.tag:hover {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

/* ===================================
   RELATED ARTICLES
   =================================== */
.related-articles {
    max-width: var(--container-width-lg);
    margin: var(--spacing-md) auto;
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.08);
}

.related-articles__title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.related-articles__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
}

.article-card {
    display: flex;
    flex-direction: column;
    background-color: white;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
}

.article-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.article-card__image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

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

.article-card__content {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-card__category {
    display: inline-block;
    width: fit-content;
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-primary);
    color: white;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
}

.article-card__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-md);
    line-height: var(--line-height-tight);
}

.article-card__excerpt {
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    flex: 1;
}

.article-card__meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border-light);
}

/* ===================================
   TABLET STYLES (min-width: 768px)
   =================================== */
@media (min-width: 768px) {
    /* Article */
    .article {
        padding: var(--spacing-2xl) var(--spacing-xl);
    }

    .article__title {
        font-size: var(--font-size-4xl);
    }

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

    .author__avatar {
        width: 80px;
        height: 80px;
    }

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

    /* Related Articles */
    .related-articles {
        padding: var(--spacing-2xl) var(--spacing-xl);
    }

    .related-articles__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .article-card__image {
        height: 220px;
    }

    /* Download Buttons - Tablet */
    .download-buttons {
        max-width: 300px;
        margin: 0 auto;
        grid-template-rows: repeat(3, 1fr);
    }
}

/* ===================================
   DESKTOP STYLES (min-width: 1024px)
   =================================== */
@media (min-width: 1024px) {
    /* Article */
    .article {
        padding: var(--spacing-3xl) var(--spacing-2xl);
    }

    .article__title {
        font-size: var(--font-size-5xl);
    }

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

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

    /* Related Articles */
    .related-articles {
        padding: var(--spacing-3xl) var(--spacing-2xl);
    }

    .related-articles__grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .article-card__image {
        height: 240px;
    }

    .article-card__title {
        font-size: var(--font-size-xl);
    }

    /* Code Block */
    .code-block__content code {
        font-size: var(--font-size-base);
    }
}

/* ===================================
   LARGE DESKTOP (min-width: 1440px)
   =================================== */
@media (min-width: 1440px) {
    .article,
    .related-articles {
        padding-left: var(--spacing-3xl);
        padding-right: var(--spacing-3xl);
    }
}

/* ===================================
   PRINT STYLES
   =================================== */
@media print {
    .article {
        padding: 0;
    }

    .article__featured-image {
        break-inside: avoid;
        page-break-inside: avoid;
    }

    .article__section {
        page-break-inside: avoid;
    }

    .article__heading {
        page-break-after: avoid;
    }

    .article__code-block {
        break-inside: avoid;
        page-break-inside: avoid;
    }

    .stat-card {
        break-inside: avoid;
    }
}

/* ===================================
   DARK MODE
   =================================== */
html[data-theme="dark"] .article__highlight-box {
    background-color: var(--color-bg-secondary);
    border-color: var(--color-border);
}

html[data-theme="dark"] .article__quote {
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), rgba(0, 212, 255, 0.1));
}

html[data-theme="dark"] .article-card {
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
}

html[data-theme="dark"] .tag {
    background-color: var(--color-bg-tertiary);
}

html[data-theme="dark"] .author__avatar {
    border-color: var(--color-bg-secondary);
}

html[data-theme="dark"] .article__author {
    background-color: var(--color-bg-secondary);
}

html[data-theme="dark"] .article__resources {
    background-color: var(--color-bg-secondary);
}

html[data-theme="dark"] .social-link {
    background-color: var(--color-bg-tertiary);
}

html[data-theme="dark"] .article__featured-image {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

html[data-theme="dark"] .article__image-caption {
    background-color: var(--color-bg-tertiary);
}

html[data-theme="dark"] .article,
html[data-theme="dark"] .related-articles {
    background-color: var(--color-bg-primary);
    box-shadow: 0 0 30px rgba(0, 0, 0, 0.5);
}

html[data-theme="dark"] .download-section {
    background-color: var(--color-bg-secondary);
}

html[data-theme="dark"] .download-button {
    background-color: #DC3545;
}

html[data-theme="dark"] .download-button:hover {
    background-color: #C82333;
}

@media (prefers-color-scheme: dark) {
    .article__highlight-box {
        background-color: var(--color-bg-secondary);
        border-color: var(--color-border);
    }

    .article__quote {
        background: linear-gradient(135deg, rgba(0, 102, 255, 0.1), rgba(0, 212, 255, 0.1));
    }

    .article-card {
        background-color: var(--color-bg-secondary);
        border: 1px solid var(--color-border);
    }

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

/* ===================================
   ACCESSIBILITY ENHANCEMENTS
   =================================== */
@media (prefers-reduced-motion: reduce) {
    .article__featured-image img,
    .article-card__image,
    .article-card,
    .stat-card {
        transition: none;
    }
}

/* Focus visible styles */
.article__body a:focus-visible,
.resources__link:focus-visible,
.tag:focus-visible,
.share__button:focus-visible,
.social-link:focus-visible {
    outline: 3px solid var(--color-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* High contrast mode */
@media (prefers-contrast: high) {
    .article__quote {
        border-width: 3px;
    }

    .article__highlight-box {
        border-width: 3px;
    }

    .stat-card {
        border: 2px solid var(--color-primary);
    }
}