/* ==========================================================================
   Blog Part'App — Styles
   Fichier : public/css/blog.css
   À inclure dans le layout : <link href="/css/blog.css" rel="stylesheet">
   ========================================================================== */

/* --- Variables — reconciled to the Part'App redesign tokens (--pa-*).
   redesign.css defines :root{ --pa-* } and loads BEFORE blog.css, so these
   --blog-* aliases re-tint the whole stylesheet to the redesign palette. --- */
:root {
    --blog-primary: var(--pa-primary);
    --blog-primary-dark: var(--pa-primary-dark);
    --blog-secondary: var(--pa-text);
    --blog-accent: var(--pa-accent);
    --blog-green: var(--pa-success);
    --blog-orange: var(--pa-warning);
    --blog-light: var(--pa-bg);
    --blog-text: var(--pa-text);
    --blog-text-muted: var(--pa-muted);
    --blog-border: var(--pa-border);
    --blog-radius: var(--pa-radius-xl);
}

/* ==========================================================================
   BREADCRUMB
   ========================================================================== */
.blog-breadcrumb {
    margin: 1rem 0 0;
    font-size: 0.85rem;
    background-color: var(--pa-bg-2);
}
.blog-breadcrumb .breadcrumb-item a {
    color: var(--blog-primary);
    text-decoration: none;
}
.blog-breadcrumb .breadcrumb-item.active {
    color: var(--blog-text-muted);
}

/* ==========================================================================
   HERO (listing)
   ========================================================================== */
.blog-hero {
    background: linear-gradient(135deg, var(--blog-primary) 0%, var(--blog-primary-dark) 100%);
    padding: 3.5rem 0;
    color: #fff;
    margin-bottom: 2rem;
}
.blog-hero h1 {
    font-weight: 700;
    font-size: 2.2rem;
    margin-bottom: 0.75rem;
}
.blog-hero p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0;
}

/* ==========================================================================
   FILTER BAR
   ========================================================================== */
.blog-filter-bar {
    background: #fff;
    border-radius: var(--blog-radius);
    padding: 1rem 1.25rem;
    margin-bottom: 2rem;
    border: 1px solid var(--blog-border);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}
.blog-filter-bar__label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--blog-text-muted);
}
.blog-filter-pill {
    border: 1.5px solid var(--blog-border);
    background: #fff;
    color: var(--blog-text);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
}
.blog-filter-pill:hover {
    border-color: var(--blog-primary);
    color: var(--blog-primary);
    background: var(--pa-primary-tint);
    text-decoration: none;
}
.blog-filter-pill.active {
    background: var(--blog-primary);
    color: #fff;
    border-color: var(--blog-primary);
}
.blog-filter-pill.active:hover {
    color: #fff;
}
.blog-filter-divider {
    width: 1px;
    height: 24px;
    background: var(--blog-border);
}

/* ==========================================================================
   TAGS
   ========================================================================== */
.blog-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 500;
    padding: 2px 10px;
    border-radius: 50px;
    margin-bottom: 0.5rem;
    margin-right: 4px;
}
.blog-tag--cycle-1  { background: #E8F8F5; color: #1ABC9C; }
.blog-tag--cycle-2  { background: #EBF5FB; color: #3498DB; }
.blog-tag--cycle-3  { background: #F4ECF7; color: #8E44AD; }
.blog-tag--conseils,
.blog-tag--general  { background: #FEF9E7; color: #F39C12; }
.blog-tag--lp21,
.blog-tag--francais,
.blog-tag--français { background: #FDEDEC; color: #E74C3C; }
.blog-tag--mathematiques,
.blog-tag--mathématiques { background: #EBF5FB; color: #2980B9; }
.blog-tag--arts-visuels { background: #F4ECF7; color: #8E44AD; }
.blog-tag--lang-fr  { background: #EBF5FB; color: var(--blog-primary); }
.blog-tag--lang-de  { background: #FDEDEC; color: #C0392B; }

/* ==========================================================================
   FEATURED CARD (listing)
   ========================================================================== */
.blog-featured-card {
    display: block;
    background: #fff;
    border-radius: var(--blog-radius);
    overflow: hidden;
    border: 1px solid var(--blog-border);
    transition: transform 0.2s, box-shadow 0.2s;
    margin-bottom: 2rem;
    text-decoration: none;
    color: inherit;
}
.blog-featured-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
    color: inherit;
    text-decoration: none;
}
.blog-featured-card__img {
    height: 100%;
    min-height: 250px;
    overflow: hidden;
}
.blog-featured-card__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.blog-featured-card__img-placeholder {
    width: 100%;
    height: 100%;
    min-height: 250px;
    background: linear-gradient(135deg, var(--pa-primary-blue), var(--pa-primary-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: #fff;
    opacity: 0.6;
}
.blog-featured-card__body {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    height: 100%;
}
.blog-featured-card__title {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.35;
    margin-bottom: 0.5rem;
}
.blog-featured-card__excerpt {
    font-size: 0.9rem;
    color: var(--blog-text-muted);
    line-height: 1.55;
    flex: 1;
}
.blog-badge-featured {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--blog-orange);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 3px 10px;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==========================================================================
   BLOG CARDS (listing)
   ========================================================================== */
.blog-card {
    background: #fff;
    border-radius: var(--blog-radius);
    overflow: hidden;
    border: 1px solid var(--blog-border);
    transition: transform 0.2s, box-shadow 0.2s;
    height: 100%;
    display: flex;
    flex-direction: column;
}
.blog-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.08);
}
.blog-card a {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 100%;
}
.blog-card__img {
    width: 100%;
    height: 180px;
    overflow: hidden;
}
.blog-card__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.blog-card__img-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--pa-primary-lighter), var(--pa-primary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: #fff;
    opacity: 0.6;
}
.blog-card__body {
    padding: 1.25rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.blog-card__title {
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 0.5rem;
    color: var(--blog-text);
}
.blog-card:hover .blog-card__title {
    color: var(--blog-primary);
}
.blog-card__excerpt {
    font-size: 0.875rem;
    color: var(--blog-text-muted);
    line-height: 1.55;
    flex: 1;
}
.blog-card__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 1rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--blog-border);
    font-size: 0.8rem;
    color: var(--blog-text-muted);
}

/* ==========================================================================
   SIDEBAR
   ========================================================================== */
.blog-sidebar-card {
    background: #fff;
    border-radius: var(--blog-radius);
    border: 1px solid var(--blog-border);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.blog-sidebar-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--blog-text);
}
.blog-social-proof__number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--blog-primary);
}

/* Popular items */
.blog-popular-item {
    display: flex;
    gap: 0.75rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--blog-border);
    text-decoration: none;
    color: inherit;
}
.blog-popular-item:last-child { border-bottom: none; }
.blog-popular-item:hover .blog-popular-item__title { color: var(--blog-primary); }
.blog-popular-item__num {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--blog-primary);
    opacity: 0.3;
    line-height: 1;
    min-width: 28px;
}
.blog-popular-item__title {
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.4;
    transition: color 0.2s;
}
.blog-popular-item__meta {
    font-size: 0.75rem;
    color: var(--blog-text-muted);
}

/* Newsletter CTA */
.blog-newsletter-cta {
    background: linear-gradient(135deg, var(--blog-secondary) 0%, #1a252f 100%);
    border-radius: var(--blog-radius);
    padding: 2rem 1.5rem;
    color: #fff;
    text-align: center;
    margin-bottom: 1.5rem;
}
.blog-newsletter-cta h4 { font-weight: 700; margin-bottom: 0.5rem; }
.blog-newsletter-cta p { font-size: 0.875rem; opacity: 0.85; margin-bottom: 1rem; }
.blog-newsletter-cta small { opacity: 0.6; }

/* ==========================================================================
   ARTICLE PAGE — HEADER
   ========================================================================== */
.blog-article-header {
    padding: 2rem 0 1.5rem;
    max-width: 820px;
}
.blog-article-header__title {
    font-size: 2.2rem;
    font-weight: 700;
    line-height: 1.25;
    color: var(--blog-text);
    margin-bottom: 1rem;
}
.blog-article-header__meta {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
    font-size: 0.875rem;
    color: var(--blog-text-muted);
}
.blog-article-header__meta i { margin-right: 4px; }

/* Language switch link */
.blog-lang-switch {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--blog-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.85rem;
    padding: 0.25rem 0.75rem;
    border: 1.5px solid var(--blog-primary);
    border-radius: 50px;
    transition: all 0.2s;
}
.blog-lang-switch:hover {
    background: var(--blog-primary);
    color: #fff;
}

/* Hero image */
.blog-article-hero-img {
    width: 100%;
    max-height: 400px;
    border-radius: var(--blog-radius);
    overflow: hidden;
    margin-bottom: 2rem;
}
.blog-article-hero-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ==========================================================================
   ARTICLE PAGE — BODY (contenu Markdown converti)
   ========================================================================== */
.blog-article-body {
    background: #fff;
    border-radius: var(--blog-radius);
    border: 1px solid var(--blog-border);
    padding: 2.5rem;
    margin-bottom: 2rem;
}
.blog-article-body h2 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--blog-secondary);
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--blog-border);
}
.blog-article-body h2:first-child { margin-top: 0; }
.blog-article-body h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--blog-text);
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}
.blog-article-body p {
    font-size: 1.05rem;
    line-height: 1.75;
    color: var(--pa-text);
    margin-bottom: 1.25rem;
}
.blog-article-body ul,
.blog-article-body ol {
    margin-bottom: 1.25rem;
    padding-left: 1.5rem;
}
.blog-article-body li {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--pa-text);
    margin-bottom: 0.4rem;
}
.blog-article-body strong { color: var(--blog-text); }
.blog-article-body blockquote {
    border-left: 4px solid var(--blog-primary);
    background: var(--blog-light);
    padding: 1.25rem 1.5rem;
    margin: 1.5rem 0;
    border-radius: 0 var(--blog-radius) var(--blog-radius) 0;
    font-style: italic;
    color: var(--blog-secondary);
}
.blog-article-body blockquote p { margin-bottom: 0.5rem; }
.blog-article-body img {
    max-width: 100%;
    border-radius: 8px;
    margin: 1rem 0;
    height: auto;
}

/* ==========================================================================
   ENCART RESSOURCE RECOMMANDÉE (CTA dans les articles)
   ========================================================================== */
.blog-resource-card {
    border: 2px solid var(--blog-primary);
    border-radius: var(--blog-radius);
    padding: 1.25rem;
    margin: 2rem 0;
    background: linear-gradient(135deg, rgba(82,98,200,0.04) 0%, rgba(82,98,200,0.09) 100%);
}
.blog-resource-card__header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--blog-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
}
.blog-resource-card__title {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--blog-text);
}
.blog-resource-card__desc {
    font-size: 0.9rem;
    color: var(--blog-text-muted);
    margin-bottom: 0.75rem;
    line-height: 1.5;
}
.blog-resource-card__btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--blog-primary);
    color: #fff;
    border: none;
    border-radius: 50px;
    padding: 0.45rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.2s;
}
.blog-resource-card__btn:hover {
    background: var(--blog-primary-dark);
    color: #fff;
}

/* ==========================================================================
   SHARE BAR
   ========================================================================== */
.blog-share-bar {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 0;
    border-top: 1px solid var(--blog-border);
    margin-top: 1.5rem;
}
.blog-share-bar > span {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--blog-text-muted);
}
.blog-share-btn {
    width: 38px;
    height: 38px;
    border-radius: 50%;
    border: 1px solid var(--blog-border);
    background: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--blog-text-muted);
    transition: all 0.2s;
    cursor: pointer;
    text-decoration: none;
    font-size: 0.95rem;
}
.blog-share-btn:hover {
    background: var(--blog-primary);
    color: #fff;
    border-color: var(--blog-primary);
}

/* ==========================================================================
   NEWSLETTER INLINE (article page)
   ========================================================================== */
.blog-newsletter-inline {
    background: linear-gradient(135deg, var(--blog-secondary) 0%, #1a252f 100%);
    border-radius: var(--blog-radius);
    padding: 2rem;
    color: #fff;
    margin: 2rem 0;
}
.blog-newsletter-inline h4 { font-weight: 700; margin-bottom: 0.5rem; }
.blog-newsletter-inline p { font-size: 0.95rem; opacity: 0.85; margin-bottom: 0; }

/* ==========================================================================
   TABLE DES MATIÈRES (sidebar article, sticky)
   ========================================================================== */
.blog-toc-card {
    background: #fff;
    border: 1px solid var(--blog-border);
    border-radius: var(--blog-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    position: sticky;
    top: 8rem;
}
.blog-toc-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--blog-text);
}
.blog-toc-link {
    display: block;
    color: var(--blog-text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    padding: 0.35rem 0 0.35rem 0.75rem;
    border-left: 2px solid var(--blog-border);
    transition: all 0.2s;
}
.blog-toc-link:hover,
.blog-toc-link.active {
    color: var(--blog-primary);
    border-left-color: var(--blog-primary);
}

/* ==========================================================================
   AUTHOR BOX (sidebar article)
   ========================================================================== */
.blog-author-box {
    background: #fff;
    border: 1px solid var(--blog-border);
    border-radius: var(--blog-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}
.blog-author-box__avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--blog-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-weight: 700;
    font-size: 1.2rem;
}

/* ==========================================================================
   SIMILAR ARTICLES
   ========================================================================== */
.blog-section-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 1.25rem;
}
.blog-similar-card {
    background: #fff;
    border: 1px solid var(--blog-border);
    border-radius: var(--blog-radius);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    height: 100%;
}
.blog-similar-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}
.blog-similar-card a {
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 100%;
}
.blog-similar-card__img {
    height: 140px;
    overflow: hidden;
}
.blog-similar-card__img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.blog-similar-card__img-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--pa-teal-soft), var(--pa-teal));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 2rem;
    opacity: 0.7;
}
.blog-similar-card__body { padding: 1rem; }
.blog-similar-card__body h5 {
    font-size: 0.95rem;
    font-weight: 600;
    line-height: 1.4;
    margin-bottom: 0;
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width: 768px) {
    .blog-hero { padding: 2rem 0; }
    .blog-hero h1 { font-size: 1.6rem; }
    .blog-filter-bar { gap: 0.5rem; }
    .blog-filter-pill { font-size: 0.8rem; padding: 0.3rem 0.75rem; }
    .blog-article-header__title { font-size: 1.6rem; }
    .blog-article-body { padding: 1.5rem; }
    .blog-article-hero-img { max-height: 220px; }
    .blog-article-header__meta { gap: 0.75rem; }
    .blog-newsletter-inline { padding: 1.5rem; }
    .blog-toc-card { position: static; }
}