/* ==========================================================================
   Vitruviana — formations.css
   Archive + Single Formation
   ========================================================================== */

/* ============ Archive : Hero ============ */
.formations-archive {
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  padding-bottom: var(--section-padding-y);
}

.formations-hero {
  padding: var(--section-padding-y) var(--container-padding) var(--section-padding-y-sm);
  border-bottom: 1px solid var(--color-border-divider);
}
.formations-hero__inner {
  max-width: var(--container-max);
  margin: 0 auto;
}
.formations-hero__overline {
  font-family: var(--font-body);
  font-size: var(--text-overline);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin: 0 0 1rem;
}
.formations-hero__title {
  font-family: var(--font-heading);
  font-size: var(--text-h1);
  font-weight: 400;
  color: var(--color-text-primary);
  margin: 0 0 1.5rem;
  line-height: 1.1;
  max-width: 60ch;
}
.formations-hero__lead {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text-secondary);
  margin: 0 0 2.5rem;
  max-width: 70ch;
}

/* ============ Archive : Stats ============ */
.formations-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}
.formations-stat {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.formations-stat__value {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  color: var(--color-gold);
  line-height: 1;
}
.formations-stat__label {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: var(--text-small);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ============ Archive : Filtres ============ */
.formations-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  padding: 2.5rem var(--container-padding) 2rem;
  max-width: var(--container-max);
  margin: 0 auto;
}
.formations-filter {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--text-small);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.625rem 1.25rem;
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: background 200ms, color 200ms, border-color 200ms;
}
.formations-filter:hover {
  background: var(--color-gold-muted);
  color: var(--color-text-primary);
  border-color: var(--color-gold);
}
.formations-filter.is-active {
  background: var(--color-gold);
  color: var(--color-bg-primary);
  border-color: var(--color-gold);
}
.formations-filter__count {
  opacity: 0.7;
  margin-left: 0.25rem;
}

/* ============ Archive : Grille ============ */
.formations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.formation-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-card);
  transition: border-color 250ms, transform 250ms, background 250ms;
}
.formation-card:hover {
  border-color: var(--color-gold);
  background: var(--color-bg-card-hover);
  transform: translateY(-2px);
}
.formation-card__link {
  display: block;
  text-decoration: none;
  color: inherit;
}
.formation-card__media {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-bg-secondary);
}
.formation-card__media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity 250ms, transform 400ms;
}
.formation-card__link:hover .formation-card__media img {
  opacity: 0.85;
  transform: scale(1.02);
}
.formation-card__media--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-secondary);
}
.formation-card__year {
  font-family: var(--font-heading);
  font-size: 4rem;
  color: var(--color-gold);
}
.formation-card__body {
  padding: 1.25rem 1.5rem 1.5rem;
}
.formation-card__type {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--text-overline);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin: 0 0 0.5rem;
}
.formation-card__title {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 400;
  color: var(--color-text-primary);
  margin: 0 0 1rem;
  line-height: 1.25;
}
.formation-card__meta {
  list-style: none;
  padding: 0;
  margin: 0 0 1rem;
  font-family: var(--font-body);
  font-weight: 300;
  font-size: var(--text-small);
  color: var(--color-text-secondary);
  line-height: 1.8;
}
.formation-card__meta li { margin: 0; }
.formation-card__attestation {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--text-small);
  color: var(--color-gold);
  margin: 0;
  padding-top: 0.75rem;
  border-top: 1px solid var(--color-border-divider);
}

/* ============ Archive : Disclaimer ============ */
.formations-disclaimer {
  max-width: 920px;
  margin: 4rem auto 0;
  padding: 1.5rem 2rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-card);
  font-family: var(--font-body);
  font-weight: 300;
  font-size: var(--text-small);
  font-style: italic;
  color: var(--color-text-muted);
  line-height: 1.7;
}
.formations-disclaimer p { margin: 0; }

/* ============ Single ============ */
.formation-single {
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  padding: var(--section-padding-y) 0 var(--section-padding-y);
}
.formation-single > * {
  max-width: 880px;
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.formation-single__breadcrumb {
  font-family: var(--font-body);
  font-weight: 400;
  font-size: var(--text-small);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0 auto 1.5rem;
}
.formation-single__breadcrumb a {
  color: var(--color-gold);
  text-decoration: none;
  transition: color 200ms;
}
.formation-single__breadcrumb a:hover {
  color: var(--color-gold-hover);
}

.formation-single__header {
  margin-bottom: 2.5rem;
}
.formation-single__type {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--text-overline);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-gold);
  margin: 0 0 0.75rem;
}
.formation-single__title {
  font-family: var(--font-heading);
  font-size: var(--text-h1);
  font-weight: 400;
  color: var(--color-text-primary);
  margin: 0 0 2rem;
  line-height: 1.15;
}
.formation-single__meta {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 0.5rem 1.5rem;
  margin: 0;
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 0.9375rem;
}
.formation-single__meta dt {
  color: var(--color-gold);
  text-transform: uppercase;
  font-size: var(--text-overline);
  letter-spacing: 0.1em;
  padding-top: 0.25rem;
  font-weight: 500;
}
.formation-single__meta dd {
  margin: 0;
  color: var(--color-text-primary);
}

.formation-single__media {
  margin: 0 auto 2.5rem;
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-card);
  max-width: 880px;
}
.formation-single__media img {
  width: 100%;
  height: auto;
  display: block;
}

.formation-single__content {
  font-family: var(--font-body);
  font-weight: 300;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--color-text-primary);
  margin-bottom: 2.5rem;
}
.formation-single__content p {
  margin: 0 0 1.25rem;
}

.formation-single__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border-divider);
}
.formation-single__pdf-link,
.formation-single__external-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-body);
  font-weight: 500;
  font-size: var(--text-small);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  transition: background 200ms, color 200ms, border-color 200ms;
}
.formation-single__pdf-link {
  background: var(--color-gold);
  color: var(--color-bg-primary);
}
.formation-single__pdf-link:hover {
  background: var(--color-gold-hover);
}
.formation-single__external-link {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}
.formation-single__external-link:hover {
  border-color: var(--color-gold);
  color: var(--color-gold);
}

/* ============ Responsive ============ */
@media (max-width: 768px) {
  .formations-hero { padding: 4rem var(--container-padding) 3rem; }
  .formations-hero__title { font-size: 2rem; }
  .formations-stat__value { font-size: 2.25rem; }
  .formations-grid { grid-template-columns: 1fr; }
  .formation-single__title { font-size: 2rem; }
  .formation-single__meta {
    grid-template-columns: 1fr;
    gap: 0.25rem 0;
  }
  .formation-single__meta dt { margin-top: 0.75rem; }
  .formation-single__meta dt:first-child { margin-top: 0; }
}