/* =============================================
   PROJET D'ÉLÈVE – SINGLE
   ============================================= */


/* =============================================
   1) Wrapper principal du projet
   ============================================= */

.eleve-projet {
  max-width: 820px;
  margin-top: 2rem;
  margin-inline: auto;
  margin-bottom: 4rem;
  padding: 38px 22px 36px 22px;
  background: #faf9fc;
  box-shadow: 0 2px 28px rgba(60,30,120,0.06);
  position: relative;
}


/* =============================================
   2) Header : titre + métas + explication
   ============================================= */

.eleve-projet-header {
  padding-bottom: 26px;
  border-bottom: 1px solid #e3e3ee;
  margin-bottom: 44px;
  text-align: left;
}

.eleve-projet-title {
  font-size: 2.1em;
  font-weight: 700;
  color: #222;
  margin-bottom: 12px;
  letter-spacing: -0.6px;
}

/* Grille des méta-infos */
.eleve-projet-meta-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px 42px;
  margin-bottom: 18px;
}

.eleve-meta-label {
  font-weight: 600;
  color: #222;
  min-width: 110px;
  display: inline-block;
}

.eleve-meta-value {
  color: #222;
  font-weight: 400;
}

/* Texte d’explication principal */
.eleve-projet-explication {
  margin: 20px 0 0 0;
  color: #222;
  font-size: 1.13em;
  line-height: 1.54;
}


/* =============================================
   3) Timeline des étapes
   ============================================= */

.eleve-timeline {
  margin: 45px 0 0 0;
  padding-left: 18px;
  border-left: 3px solid #e3e3f7;
  position: relative;
}

/* Une étape */
.eleve-etape {
  display: flex;
  align-items: flex-start;
  gap: 32px;
  margin-bottom: 44px;
  padding: 22px 18px 22px 18px;
  position: relative;
  background: #fff;
  box-shadow: 0 1.5px 10px rgba(120,80,160,0.07);
}

.eleve-etape:last-child {
  margin-bottom: 0;
}

/* Image d’étape */
.eleve-etape-img {
  max-width: 180px;
  width: 100%;
  object-fit: cover;
  box-shadow: 0 2.5px 8px rgba(120,80,200,0.09);
  flex-shrink: 0;
}

/* Texte d’étape */
.eleve-etape-explication {
  background: #faf9fc;
  padding: 20px 17px;
  font-size: 1.09em;
  color: #222;
  font-weight: 400;
  line-height: 1.55;
  margin: 0;
  flex: 1;
}


/* =============================================
   4) Image de couverture finale
   ============================================= */

.eleve-projet-cover {
  margin: 50px auto 0 auto;
  max-width: 400px;
  box-shadow: 0 2px 12px rgba(100,60,170,0.08);
  display: block;
}

.eleve-projet-cover img {
  display: block;
  width: 100%;
  height: auto;
}


/* =============================================
   5) Navigation entre projets – styles communs
   ============================================= */

/* Cartes de nav (prev / next) */
.eleve-nav-card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  text-decoration: none;
  background: #0f172a;
  color: #f9fafb;
  padding: 10px 12px 12px 12px;
  border-radius: 3px;
  box-shadow: 0 12px 35px rgba(15,23,42,0.32);
  gap: 6px;
  transition:
    transform .18s ease,
    box-shadow .18s ease,
    background .18s ease;
}

.eleve-nav-card--prev {
  justify-self: flex-start;
}

.eleve-nav-card--next {
  justify-self: flex-end;
  text-align: right;
  align-items: flex-end;
}

.eleve-nav-card:hover {
  transform: translateY(-4px);
  background: #111827;
  box-shadow: 0 18px 45px rgba(15,23,42,0.45);
}

/* Vignettes */
.eleve-nav-thumb {
  width: 100%;
  max-width: 190px;
  overflow: hidden;
  border-radius: 2px;
}

.eleve-nav-thumb-img {
  display: block;
  width: 100%;
  height: 120px;
  object-fit: cover;
  transform: scale(1.02);
  transition: transform .3s ease;
}

.eleve-nav-card:hover .eleve-nav-thumb-img {
  transform: scale(1.06);
}

/* Textes nav */
.eleve-nav-label {
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  opacity: 0.85;
}

.eleve-nav-title {
  font-size: 0.98rem;
  font-weight: 600;
}

.eleve-nav-placeholder {
  height: 1px;
}

.eleve-nav-center {
  text-align: center;
  color: #4b5563;
  font-size: 0.9rem;
}


/* =============================================
   6) Navigation – nav haut (desktop) & nav bas
   ============================================= */

/* Nav haut : sticky en desktop */
.eleve-projet-nav--top {
  position: sticky;
  top: 80px; /* ajuste selon la hauteur du header */
  z-index: 5;
  margin-inline: 3rem;
  margin-bottom: 1.5rem;
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

/* Nav bas cachée par défaut (visible seulement en mobile) */
.eleve-projet-nav--bottom {
  display: none;
}


/* =============================================
   7) Responsive ≤ 768px : mise en page mobile
   ============================================= */

@media (max-width: 768px) {
  /* Wrapper plus compact */
  .eleve-projet {
    margin: 16px auto;
    padding: 16px 4vw 18px 4vw;
    box-shadow: 0 1px 16px rgba(60,30,120,0.06);
  }

  .eleve-projet-title {
    font-size: 1.35em;
    margin-bottom: 8px;
  }

  .eleve-projet-meta-grid {
    grid-template-columns: 1fr;
    gap: 8px 0;
    margin-bottom: 12px;
  }

  .eleve-meta-label,
  .eleve-meta-value {
    font-size: 0.9rem;
  }

  .eleve-projet-explication {
    font-size: 0.98rem;
    line-height: 1.5;
    margin-top: 12px;
  }

  /* Timeline en colonne + images réduites */
  .eleve-timeline {
    padding-left: 10px;
    margin-top: 22px;
  }

  .eleve-etape {
    flex-direction: column;
    gap: 10px;
    margin-bottom: 22px;
    padding: 10px 6px 12px 6px;
  }

  .eleve-etape-img {
    max-width: 100%;
    height: 200px;
    object-fit: cover;
  }

  .eleve-etape-explication {
    padding: 12px 10px;
    font-size: 0.95rem;
    line-height: 1.5;
  }

  /* Cover plus petite */
  .eleve-projet-cover {
    margin-top: 28px;
    max-width: 92vw;
    box-shadow: 0 1px 8px rgba(100,60,170,0.08);
  }

  /* Nav haut cachée en mobile */
  .eleve-projet-nav--top {
    display: none;
  }

  /* Nav bas visible sous le projet, en colonne */
  .eleve-projet-nav--bottom {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    margin-inline: 4vw;
    margin-top: 18px;
    margin-bottom: 18px;
  }

  .eleve-nav-card,
  .eleve-nav-card--prev,
  .eleve-nav-card--next {
    align-items: center;
    text-align: center;
    padding: 8px 10px 10px 10px;
    box-shadow: 0 8px 22px rgba(15,23,42,0.28);
  }

  .eleve-nav-thumb {
    max-width: 100%;
  }

  .eleve-nav-thumb-img {
    height: 90px;
  }

  .eleve-nav-label {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
  }

  .eleve-nav-title {
    font-size: 0.9rem;
  }

  .eleve-nav-center {
    display: none;
  }
}