/* ============================================
   Blog Styles - Nanilex Design System
   ============================================ */

/* ---- Blog Hero (listing page) ---- */
.blog-hero {
    padding: calc(var(--spacing-32) + 64px) 0 var(--spacing-12);
    background: var(--color-bg-base);
    text-align: center;
    position: relative;
}

.blog-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    width: 600px;
    height: 400px;
    transform: translateX(-50%);
    background: radial-gradient(ellipse, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.blog-hero__title {
    font-size: clamp(var(--font-size-4xl), 5vw, var(--font-size-5xl));
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    line-height: var(--line-height-tight);
    letter-spacing: -0.03em;
    margin-bottom: var(--spacing-4);
    position: relative;
}

.blog-hero__subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    max-width: 600px;
    margin: 0 auto;
    position: relative;
}

/* ---- Blog Grid (listing) ---- */
.blog-listing {
    padding: var(--spacing-12) 0 var(--spacing-24);
    background: var(--color-bg-base);
}

.blog-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-6);
}

/* Featured card spans full width */
.blog-card--featured {
    grid-column: 1 / -1;
}

.blog-card--featured .blog-card__link {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    align-items: stretch;
}

.blog-card--featured .blog-card__content {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.blog-card--featured .blog-card__title {
    font-size: var(--font-size-2xl);
}

.blog-card--featured .blog-card__excerpt {
    -webkit-line-clamp: 4;
}

/* ---- Blog Card ---- */
.blog-card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all var(--transition-base);
}

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

.blog-card__link {
    display: block;
    text-decoration: none;
    color: inherit;
    height: 100%;
}

.blog-card__image {
    aspect-ratio: 16/9;
    overflow: hidden;
    background: var(--color-bg-subtle);
    position: relative;
}

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

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

/* Gradient overlay on images */
.blog-card__image-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    opacity: 0.35;
    transition: opacity var(--transition-slow);
}

.blog-card:hover .blog-card__image-placeholder {
    opacity: 0.2;
}

.blog-card__image-placeholder svg {
    width: 48px;
    height: 48px;
    stroke: rgba(255, 255, 255, 0.5);
    stroke-width: 1.5;
    fill: none;
    z-index: 2;
}

.blog-card--featured .blog-card__image-placeholder svg {
    width: 64px;
    height: 64px;
}

.blog-card__image-placeholder--annonce {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-secondary) 100%);
}

.blog-card__image-placeholder--securite {
    background: linear-gradient(135deg, #059669 0%, var(--color-secondary) 100%);
}

.blog-card__image-placeholder--mise-en-garde {
    background: linear-gradient(135deg, var(--color-error) 0%, #FBBF24 100%);
}

.blog-card__image-placeholder--fonctionnalite {
    background: linear-gradient(135deg, var(--color-accent) 0%, #6366F1 100%);
}

.blog-card__image-placeholder--productivite {
    background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-accent) 100%);
}

.blog-card__content {
    padding: var(--spacing-6);
}

.blog-card__meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-3);
}

.blog-card__tag {
    display: inline-block;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-1) var(--spacing-3);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Tag color variants */
.blog-card__tag--annonce {
    background: var(--color-accent-muted);
    color: var(--color-accent);
}

.blog-card__tag--securite {
    background: rgba(52, 211, 153, 0.15);
    color: var(--color-success);
}

.blog-card__tag--mise-en-garde {
    background: rgba(248, 113, 113, 0.15);
    color: var(--color-error);
}

.blog-card__tag--fonctionnalite {
    background: var(--color-secondary-muted);
    color: var(--color-secondary);
}

.blog-card__tag--productivite {
    background: rgba(251, 191, 36, 0.15);
    color: var(--color-warning);
}

.blog-card__date {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.blog-card__title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    line-height: 1.3;
    margin-bottom: var(--spacing-3);
    letter-spacing: -0.01em;
}

.blog-card__excerpt {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-4);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.blog-card__readmore {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-accent);
    transition: color var(--transition-fast);
}

.blog-card__arrow {
    display: inline-block;
    transition: transform var(--transition-fast);
}

.blog-card:hover .blog-card__arrow {
    transform: translateX(3px);
}

/* ---- Breadcrumb ---- */
.blog-breadcrumb {
    padding-top: calc(64px + var(--spacing-6));
    padding-bottom: var(--spacing-4);
    background: var(--color-bg-base);
}

.blog-breadcrumb__list {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    list-style: none;
    padding: 0;
    margin: 0;
}

.blog-breadcrumb__list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.blog-breadcrumb__list li::before {
    content: '/';
    color: var(--color-text-muted);
}

.blog-breadcrumb__list li:first-child::before {
    display: none;
}

.blog-breadcrumb__list a {
    color: var(--color-text-tertiary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.blog-breadcrumb__list a:hover {
    color: var(--color-accent);
}

.blog-breadcrumb__list li[aria-current="page"] {
    color: var(--color-text-secondary);
}

/* ---- Article Hero ---- */
.blog-article__hero {
    padding: var(--spacing-8) 0 var(--spacing-6);
    background: var(--color-bg-base);
    text-align: center;
}

.blog-article__tag {
    display: inline-block;
    margin-bottom: var(--spacing-4);
}

.blog-article__title {
    font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    line-height: var(--line-height-tight);
    letter-spacing: -0.03em;
    max-width: 800px;
    margin: 0 auto var(--spacing-6);
}

.blog-article__meta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

.blog-article__separator {
    color: var(--color-text-muted);
}

.blog-article__updated {
    color: var(--color-accent);
    font-weight: 500;
}

/* ---- Article Featured Image ---- */
.blog-article__image {
    padding-bottom: var(--spacing-10);
    background: var(--color-bg-base);
    text-align: center;
}

.blog-article__image img {
    max-width: 800px;
    width: 100%;
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    margin: 0 auto;
    display: block;
}

/* ---- Article Hero Banner ---- */
.blog-article__banner {
    max-width: 800px;
    margin: 0 auto var(--spacing-8);
    border-radius: var(--radius-xl);
    overflow: hidden;
    aspect-ratio: 21/9;
}

.blog-article__banner img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

/* ---- Article Body (typography) ---- */
.blog-article__layout {
    display: flex;
    gap: var(--spacing-10);
    align-items: flex-start;
}

.blog-article__container {
    max-width: 720px;
    flex: 1;
    min-width: 0;
}

/* Fallback when no JS / TOC not generated */
.blog-article__container.container {
    margin: 0 auto;
}

.blog-article__body {
    padding: var(--spacing-8) 0 var(--spacing-16);
    background: var(--color-bg-base);
}

/* ---- Reading Progress Bar ---- */
.blog-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: transparent;
    transform-origin: left;
    transform: scaleX(0);
    z-index: 1001;
    pointer-events: none;
    background: var(--color-accent, #8b5cf6);
    transition: transform 0.15s ease-out;
}

/* ---- TOC Sticky Sidebar ---- */
.blog-toc {
    position: sticky;
    top: 96px;
    width: 200px;
    flex-shrink: 0;
    max-height: calc(100vh - 120px);
    overflow-y: auto;
    padding-top: var(--spacing-2);
}

.blog-toc__title {
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: var(--spacing-3);
    padding-left: var(--spacing-3);
}

.blog-toc__list {
    list-style: none !important;
    padding: 0 !important;
    margin: 0;
    border-left: 1px solid var(--color-border);
}

.blog-toc__link {
    display: block;
    font-size: var(--font-size-xs);
    line-height: 1.35;
    color: var(--color-text-tertiary);
    text-decoration: none;
    padding: 6px var(--spacing-3);
    border-left: 2px solid transparent;
    margin-left: -1px;
    transition: all var(--transition-fast);
}

.blog-toc__link:hover {
    color: var(--color-text-secondary);
}

.blog-toc__link--active {
    color: var(--color-accent);
    border-left-color: var(--color-accent);
}

/* Scrollbar discret pour la TOC */
.blog-toc::-webkit-scrollbar {
    width: 3px;
}

.blog-toc::-webkit-scrollbar-track {
    background: transparent;
}

.blog-toc::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
}

.blog-article__body h2 {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-top: var(--spacing-12);
    margin-bottom: var(--spacing-4);
    letter-spacing: -0.02em;
}

.blog-article__body h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
    margin-top: var(--spacing-8);
    margin-bottom: var(--spacing-3);
}

.blog-article__body p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-6);
}

.blog-article__body ul,
.blog-article__body ol {
    margin-bottom: var(--spacing-6);
    padding-left: var(--spacing-6);
}

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

.blog-article__body li {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-2);
}

.blog-article__body a {
    color: var(--color-accent);
    text-decoration: underline;
    text-decoration-color: rgba(139, 92, 246, 0.4);
    text-underline-offset: 2px;
    transition: all var(--transition-fast);
}

.blog-article__body a:hover {
    color: var(--color-accent-hover);
    text-decoration-color: var(--color-accent-hover);
}

.blog-article__body blockquote {
    background: var(--color-accent-subtle);
    border-left: 3px solid var(--color-accent);
    padding: var(--spacing-4) var(--spacing-6);
    margin: var(--spacing-6) 0;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.blog-article__body blockquote p {
    margin-bottom: 0;
    color: var(--color-text-secondary);
    font-style: italic;
}

.blog-article__body img {
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    margin: var(--spacing-8) 0;
    max-width: 100%;
    height: auto;
}

.blog-article__body strong {
    color: var(--color-text-primary);
    font-weight: var(--font-weight-medium);
}

/* Answer capsule (GEO optimization) */
.article-capsule {
    background: var(--color-bg-subtle);
    border-left: 3px solid var(--color-accent);
    border-radius: var(--radius-md);
    padding: var(--spacing-3) var(--spacing-4);
    margin: var(--spacing-4) 0 var(--spacing-6);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-relaxed);
    color: var(--color-text-secondary);
}

.article-capsule strong {
    color: var(--color-accent);
    font-weight: var(--font-weight-semibold);
}

/* Info/highlight box */
.blog-info-box {
    background: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    border-left: 3px solid var(--color-accent);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    margin: var(--spacing-8) 0;
}

.blog-info-box p:last-child {
    margin-bottom: 0;
}

.blog-info-box--warning {
    border-left-color: var(--color-warning);
}

.blog-info-box--danger {
    border-left-color: var(--color-error);
}

.blog-info-box--success {
    border-left-color: var(--color-success);
}

.blog-info-box--updated {
    border-left-color: var(--color-accent);
    background: color-mix(in srgb, var(--color-accent) 5%, var(--color-bg-subtle));
}

/* ---- Share Buttons ---- */
.blog-share {
    padding: var(--spacing-8) 0;
    border-top: 1px solid var(--color-border);
    background: var(--color-bg-base);
}

.blog-share__label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--spacing-4);
}

.blog-share__buttons {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.blog-share__btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: var(--color-bg-elevated);
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    font-family: inherit;
    line-height: 1;
}

.blog-share__btn svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

.blog-share__btn:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-border-hover);
    color: var(--color-text-primary);
}

.blog-share__btn--linkedin:hover { color: #0A66C2; }
.blog-share__btn--twitter:hover { color: #1DA1F2; }
.blog-share__btn--facebook:hover { color: #1877F2; }

/* ---- Related Articles ---- */
.blog-related {
    padding: var(--spacing-16) 0;
    background: var(--color-bg-subtle);
    border-top: 1px solid var(--color-border);
}

.blog-related__title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-8);
    letter-spacing: -0.02em;
}

.blog-related__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-6);
}

/* ---- CTA Section (blog) ---- */
.blog-cta {
    padding: var(--spacing-20) 0;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.08) 0%, rgba(6, 182, 212, 0.08) 100%);
    text-align: center;
    border-top: 1px solid var(--color-border);
}

.blog-cta__title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-4);
    letter-spacing: -0.02em;
}

.blog-cta__description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-8);
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

/* ---- Responsive ---- */
@media (max-width: 1024px) {
    .blog-card--featured .blog-card__link {
        grid-template-columns: 1fr;
    }

    .blog-toc {
        display: none;
    }

    .blog-article__layout {
        display: block;
    }

    .blog-article__container {
        max-width: 720px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .blog-hero {
        padding-top: calc(var(--spacing-20) + 64px);
    }

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

    .blog-related__grid {
        grid-template-columns: 1fr;
    }

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

    .blog-share__buttons {
        flex-direction: column;
    }

    .blog-share__btn {
        justify-content: center;
    }

    .blog-article__body h2 {
        margin-top: var(--spacing-8);
    }
}