/* ============================================================
   BLOG — MPI Ingénierie & Numérique
   Styles spécifiques au blog — hérite de main.css (variables, reset, typo, navbar, footer…)
   ============================================================ */

/* --- Breadcrumb --- */
.blog-breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: var(--space-4);
}
.blog-breadcrumb a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color var(--transition-fast);
}
.blog-breadcrumb a:hover {
  color: var(--color-secondary);
}
.blog-breadcrumb span[aria-hidden] {
  opacity: 0.4;
}

/* --- Reading progress bar (articles) --- */
.read-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--color-secondary);
  z-index: var(--z-toast);
  transition: width .1s linear;
  pointer-events: none;
}

/* --- Sticky mini hero (articles) --- */
.art-hero-sticky {
  position: fixed;
  top: 64px;
  left: 0;
  right: 0;
  z-index: 199; /* juste sous la navbar (z-index 200) */
  background: #0a1628;
  padding: .5rem 0;
  transform: translateY(-110%);
  opacity: 0;
  transition: transform .3s cubic-bezier(.4, 0, .2, 1), opacity .25s ease;
  pointer-events: none;
  will-change: transform, opacity;
  box-shadow: 0 3px 16px rgba(0, 0, 0, .25);
}
.art-hero-sticky.is-visible {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}
.art-hero-sticky__inner {
  display: flex;
  align-items: center;
  gap: .375rem;
  font-size: .8rem;
  overflow: hidden;
  white-space: nowrap;
}
.art-hero-sticky__crumb-link {
  color: rgba(255, 255, 255, .52);
  text-decoration: none;
  flex-shrink: 0;
  transition: color .15s;
}
.art-hero-sticky__crumb-link:hover {
  color: var(--color-secondary);
}
.art-hero-sticky__sep {
  color: rgba(255, 255, 255, .28);
  flex-shrink: 0;
  user-select: none;
}
.art-hero-sticky__title {
  font-weight: 600;
  color: #fff;
  overflow: hidden;
  text-overflow: ellipsis;
  min-width: 0;
}

/* --- Blog Header / Hero --- */
.blog-header {
  padding: 5rem 0 6rem;
  background-color: #1a1a18;
  background-image:
    repeating-linear-gradient(
      -55deg,
      transparent 0, transparent 18px,
      rgba(255,255,255,0.04) 18px, rgba(255,255,255,0.04) 19px
    ),
    radial-gradient(ellipse 55% 65% at 94% 8%, rgba(233,116,35,0.22) 0%, transparent 65%),
    linear-gradient(to bottom, #1a1a18 0%, #2F2E2C 20%, #ffffff 100%);
  background-size: auto, 100% 100%, 100% 100%;
  border-radius: 0 0 2rem 2rem;
  overflow: hidden;
}
.blog-header .section-label {
  margin-bottom: var(--space-3);
}
.blog-header .section-title {
  color: var(--color-white);
  margin-bottom: var(--space-4);
}
.blog-header .section-subtitle {
  color: rgba(255, 255, 255, 0.72);
  max-width: 600px;
}

/* --- Article hero — defaults partagés (futurs articles) --- */
.art-hero {
  padding: 5rem 0 6rem;
  overflow: hidden;
  border-radius: 0 0 2rem 2rem;
}
.art-hero__meta {
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.5);
}

/* --- Blog Controls (search + filters) --- */
.blog-controls {
  padding: var(--space-5) 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}
.blog-search-wrap {
  position: relative;
  margin-bottom: var(--space-3);
}
.blog-search__input {
  width: 100%;
  padding: var(--space-3) var(--space-5);
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  outline: none;
  box-sizing: border-box;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.blog-search__input:focus {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(233, 116, 35, 0.15);
}
.blog-search__input::placeholder {
  color: var(--color-text-light);
}

/* --- Tags filter bar --- */
.blog-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  align-items: center;
  min-height: 28px;
}
.blog-tag {
  display: inline-flex;
  align-items: center;
  padding: 3px var(--space-3);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  background: var(--color-bg);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  text-transform: lowercase;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
  user-select: none;
  line-height: 1;
}
.blog-tag:hover {
  color: var(--color-secondary);
  border-color: var(--color-secondary);
}
.blog-tag.is-active {
  color: var(--color-white);
  background: var(--color-secondary);
  border-color: var(--color-secondary);
}

/* --- Blog list section --- */
.blog-list {
  padding: var(--space-10) 0 var(--space-24);
  background: var(--color-bg);
}

/* --- Count badge --- */
.blog-count {
  font-size: var(--text-sm);
  color: var(--color-text-light);
  margin-bottom: var(--space-6);
  min-height: 1.5em;
}
.blog-count strong {
  color: var(--color-text);
  font-weight: var(--font-weight-semibold);
}

/* --- Blog grid --- */
.blog-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}
@media (min-width: 640px) {
  .blog-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 1024px) {
  .blog-grid { grid-template-columns: repeat(3, 1fr); }
}

/* --- Article card --- */
.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition: box-shadow var(--transition-base), transform var(--transition-base), border-color var(--transition-base);
}
.blog-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
  border-color: rgba(233, 116, 35, 0.3);
}

/* Cover */
.blog-card__cover {
  display: block;
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: var(--color-surface-alt);
  text-decoration: none;
}
.blog-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}
.blog-card:hover .blog-card__cover img {
  transform: scale(1.04);
}
.blog-card__cover--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-4xl);
  color: var(--color-text-light);
}

/* Card body */
.blog-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--space-5);
  gap: var(--space-3);
}

/* Tags */
.blog-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  list-style: none;
  padding: 0;
  margin: 0;
}
.blog-card__tag {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-secondary);
  background: rgba(233, 116, 35, 0.08);
  border: none;
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-fast);
}
.blog-card__tag:hover {
  background: rgba(233, 116, 35, 0.18);
}

/* Title */
.blog-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  line-height: var(--leading-snug);
  margin: 0;
  text-decoration: none;
  display: block;
  transition: color var(--transition-fast);
}
.blog-card__title:hover {
  color: var(--color-secondary);
}

/* Excerpt */
.blog-card__excerpt {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
  margin: 0;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Meta bar */
.blog-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-light);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}
.blog-card__date {
  font-variant-numeric: tabular-nums;
}
.blog-card__reading-time {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* CTA */
.blog-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-secondary);
  text-decoration: none;
  transition: gap var(--transition-fast), color var(--transition-fast);
}
.blog-card__link:hover {
  color: var(--color-secondary-dark);
  gap: var(--space-3);
}
.blog-card__link::after {
  content: '→';
}

/* --- Empty states --- */
.blog-empty {
  text-align: center;
  padding: var(--space-20) var(--space-4);
  color: var(--color-text-muted);
}
.blog-empty p {
  font-size: var(--text-lg);
  margin-bottom: var(--space-6);
  line-height: var(--leading-normal);
}

/* --- Navbar: lien Blog actif sur les pages blog --- */
.navbar__links a[aria-current="page"] {
  color: var(--color-secondary);
  font-weight: var(--font-weight-semibold);
}

/* --- Navbar: toujours opaque sur les pages articles ---
   Le blog index a data-transparent sur le nav → exclut cet override,
   laissant navbar.css gérer le comportement transparent→scrolled natif.
   Les articles (sans data-transparent) restent toujours opaques. */
.navbar.transparent:not([data-transparent]) {
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}
/* Liens : blanc → foncé */
.navbar.transparent:not([data-transparent]) .navbar__links a,
.navbar.transparent:not([data-transparent]) .navbar__links a:visited,
.navbar.transparent:not([data-transparent]) .navbar__links a:hover,
.navbar.transparent:not([data-transparent]) .navbar__links a:focus,
.navbar.transparent:not([data-transparent]) .navbar__links a:active {
  color: var(--color-text-muted);
}
.navbar.transparent:not([data-transparent]) .navbar__links a:hover {
  color: var(--color-primary);
}
/* Logo */
.navbar.transparent:not([data-transparent]) .navbar__logo {
  color: var(--color-primary);
}
/* Burger */
.navbar.transparent:not([data-transparent]) .navbar__burger {
  border-color: var(--color-border);
}
.navbar.transparent:not([data-transparent]) .navbar__burger span {
  background: var(--color-text);
}
/* Lang switcher */
.navbar.transparent:not([data-transparent]) .lang-switcher__item {
  color: var(--color-text-light);
}
.navbar.transparent:not([data-transparent]) .lang-switcher__item:hover  { color: var(--color-primary); }
.navbar.transparent:not([data-transparent]) .lang-switcher__item.is-active { color: var(--color-secondary); }
.navbar.transparent:not([data-transparent]) .lang-switcher span[aria-hidden] { color: var(--color-border); }

/* --- Article: Contact CTA — titre visible sur fond sombre + texte centré ---
   .art-content h2 a spécificité 0-1-1 et écrase color:#fff du titre.
   .contact-cta .contact-cta__title = 0-2-0 → prime, blog.css chargé après. */
.contact-cta {
  text-align: center;
}
.contact-cta .contact-cta__title {
  color: #fff;
  border: none;
  padding-top: 0;
  margin-top: 0;
  text-wrap: balance;
}
.contact-cta .contact-cta__desc {
  text-align: center;
  margin-inline: auto;
  text-wrap: balance;
}

/* --- Article: image de couverture en tête (taille naturelle, centrée) --- */
.art-cover {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.5rem;
  background: var(--color-bg);
  line-height: 0;
}
.art-cover img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: .75rem;
  box-shadow: 0 4px 24px rgba(0, 0, 0, .12);
}