/* Section : extras — board viewport */
:root {
  --muted: #9a8a9c;
  --dim:   #ccc4d0;
}

#board-wrap {
  position: fixed;
  inset: 0;
  z-index: 2;
  overflow: hidden;
  cursor: grab;
  user-select: none;
}
#board-wrap:active { cursor: grabbing; }

#board-nav {
  position: absolute;
  top: 5.5vh;
  left: 8vw;
  z-index: 10;
  pointer-events: none;
}
#board-nav * { pointer-events: auto; }

#board {
  position: absolute;
  top: 0;
  left: 0;
  width: 4000px;
  height: 3000px;
  background-image:
    linear-gradient(var(--dim) 1px, transparent 1px),
    linear-gradient(90deg, var(--dim) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity-color: var(--bg);
}

#board-hint {
  position: fixed;
  bottom: 3.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--muted);
  z-index: 20;
  pointer-events: none;
  animation: fadeHint 4s ease forwards;
  animation-delay: 0.8s;
  opacity: 0;
}
@keyframes fadeHint {
  0%   { opacity: 0; }
  15%  { opacity: 1; }
  75%  { opacity: 1; }
  100% { opacity: 0; }
}

/* Carte = icône seule ; le texte apparaît au survol. */
.board-card {
  position: absolute;
  width: var(--icon-size, 96px);
  cursor: pointer;
}
.board-card:hover { z-index: 5; }

.board-card-icon {
  display: block;
  -webkit-user-drag: none;
  width: 100%;
  height: auto;
  opacity: 0.8;
  transition: opacity 0.18s, transform 0.18s;
}
.board-card:hover .board-card-icon {
  opacity: 1;
  transform: scale(1.06);
}

/* Panneau de survol, sous l'icône.
   Masqué par défaut : une carte ne l'affiche que si son front matter
   porte `tooltip:` (classe .board-card--tip). */
.board-card-over {
  position: absolute;
  top: calc(100% + 10px);
  left: 50%;
  width: max-content;
  max-width: var(--over-width, 220px);
  padding: 0.8rem 1rem;
  background: var(--over-bg, var(--bg));
  border: 1px solid var(--fg);
  box-shadow: 3px 3px 0 var(--dim);
  pointer-events: none;
  transform: translate(-50%, -4px);
  display: none;
}

/* Les cartes qui ont demandé une infobulle. */
.board-card--tip .board-card-over {
  display: block;
  opacity: 0;
  transition: opacity 0.18s ease, transform 0.18s ease;
}
.board-card--tip:hover .board-card-over,
.board-card--tip:focus-within .board-card-over {
  opacity: 1;
  transform: translate(-50%, 0);
}

/* Sans survol (tactile) : l'infobulle demandée reste visible,
   sinon elle serait inatteignable. */
@media (hover: none) {
  .board-card--tip .board-card-over {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

/* Repli si le PNG manque : on retrouve la carte texte d'origine. */
.board-card.no-icon {
  width: auto;
  min-width: 140px;
  max-width: 300px;
}
.board-card.no-icon .board-card-icon { display: none; }
.board-card.no-icon .board-card-over {
  display: block;
  position: static;
  opacity: 1;
  transform: none;
  max-width: none;
  border-color: var(--dim);
  box-shadow: 2px 2px 0 var(--dim);
  transition: border-color 0.15s, box-shadow 0.15s;
}
.board-card.no-icon:hover .board-card-over {
  border-color: var(--fg);
  box-shadow: 4px 4px 0 var(--dim);
}

.board-card-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  line-height: 1.3;
  color: var(--fg);
}
.board-card-title + .board-card-body { margin-top: 0.5rem; }

.board-card-body {
  font-size: 11px;
  color: var(--muted);
  line-height: 1.65;
  font-family: var(--font-sans);
  font-weight: 300;
}