/* ============================================================
   blog.css — Blog pages (jeuxdemaths.com)
   ============================================================ */

.blog-page {
  max-width: 860px;
  padding-bottom: 64px;
}

/* ── Index: grid of cards ─────────────────────────────────── */
.blog-index-card {
  margin-bottom: 20px;
}
.blog-index-card h1 {
  font-size: 1.75rem;
  color: #5a3299;
  margin-bottom: 10px;
}
.blog-index-card p {
  color: #3a2060;
  line-height: 1.6;
}

.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.blog-card {
  background: rgba(255,255,255,.96);
  border-radius: 14px;
  overflow: hidden;
  transition: transform .18s, box-shadow .18s;
}
.blog-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(102,126,234,.22);
}
.blog-card__link {
  display: block;
  padding: 24px 28px;
  text-decoration: none;
  color: inherit;
}
.blog-card__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 10px;
}
.blog-card__date {
  font-size: .8rem;
  color: #888;
}
.blog-card__title {
  font-size: 1.2rem;
  color: #5a3299;
  margin-bottom: 8px;
  line-height: 1.3;
  font-weight: 700;
}
.blog-card__excerpt {
  font-size: .92rem;
  color: #4a3070;
  line-height: 1.65;
  margin-bottom: 14px;
}
.blog-card__read {
  font-size: .88rem;
  font-weight: 700;
  color: #667eea;
}

/* ── Tags ─────────────────────────────────────────────────── */
.blog-tag {
  display: inline-block;
  background: rgba(102,126,234,.12);
  border: 1px solid rgba(102,126,234,.25);
  border-radius: 20px;
  padding: 2px 10px;
  font-size: .75rem;
  color: #5a3299;
  font-weight: 600;
}

/* ── Article page ─────────────────────────────────────────── */
.blog-article {
  padding: 32px 36px;
}

.blog-article__header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 2px solid rgba(102,126,234,.15);
}
.blog-article__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}
.blog-article__meta time {
  font-size: .82rem;
  color: #888;
}
.blog-article__header h1 {
  font-size: 1.9rem;
  color: #5a3299;
  line-height: 1.25;
  margin-bottom: 12px;
}
.blog-article__lead {
  font-size: 1.08rem;
  color: #4a3070;
  line-height: 1.7;
  font-style: italic;
}

/* ── Article body typography ──────────────────────────────── */
.blog-article__body {
  color: #2d1b4e;
  line-height: 1.8;
  font-size: 1rem;
}
.blog-article__body h2 {
  font-size: 1.25rem;
  color: #5a3299;
  margin: 32px 0 12px;
  padding-bottom: 6px;
  border-bottom: 2px solid rgba(102,126,234,.2);
}
.blog-article__body h3 {
  font-size: 1.05rem;
  color: #764ba2;
  margin: 22px 0 8px;
  font-weight: 700;
}
.blog-article__body p {
  margin-bottom: 16px;
}
.blog-article__body ul,
.blog-article__body ol {
  padding-left: 24px;
  margin-bottom: 16px;
}
.blog-article__body li {
  margin-bottom: 6px;
}
.blog-article__body strong {
  color: #5a3299;
}
.blog-article__body a {
  color: #667eea;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.blog-article__body a:hover {
  color: #764ba2;
}
.blog-article__body hr {
  border: none;
  border-top: 2px solid rgba(102,126,234,.2);
  margin: 32px 0;
}
.blog-article__body blockquote {
  border-left: 4px solid #764ba2;
  background: rgba(102,126,234,.07);
  border-radius: 0 10px 10px 0;
  padding: 12px 18px;
  margin: 16px 0;
  color: #3a2060;
  font-style: italic;
}
.blog-article__body code {
  background: rgba(102,126,234,.1);
  padding: 1px 6px;
  border-radius: 4px;
  font-size: .92em;
}

/* ── Related articles ─────────────────────────────────────── */
.blog-related {
  background: rgba(255,255,255,.96);
  border-radius: 14px;
  padding: 22px 28px;
  margin-top: 16px;
}
.blog-related h2 {
  font-size: 1rem;
  color: #764ba2;
  text-transform: uppercase;
  letter-spacing: .06em;
  font-weight: 700;
  margin-bottom: 14px;
}
.blog-related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 12px;
}
.blog-related-card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  background: rgba(102,126,234,.08);
  border: 1.5px solid rgba(118,75,162,.18);
  border-radius: 10px;
  padding: 14px 16px;
  text-decoration: none;
  color: #2d1b4e;
  transition: background .18s, color .18s;
}
.blog-related-card:hover {
  background: linear-gradient(135deg, #667eea, #764ba2);
  color: #fff;
  border-color: transparent;
}
.blog-related-card strong {
  font-size: .95rem;
  line-height: 1.3;
}
.blog-related-card span {
  font-size: .8rem;
  opacity: .75;
}

/* ── Back link ────────────────────────────────────────────── */
.blog-back {
  display: inline-block;
  margin-top: 20px;
  color: rgba(255,255,255,.85);
  text-decoration: none;
  font-size: .9rem;
  font-weight: 600;
  transition: color .18s;
}
.blog-back:hover { color: #fff; }

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 600px) {
  .blog-article { padding: 20px 18px; }
  .blog-card__link { padding: 18px 16px; }
  .blog-article__header h1 { font-size: 1.45rem; }
  .blog-related-grid { grid-template-columns: 1fr; }
}