/* vertical-nav - Nav latérale avec glyphes/runes */
.nav {
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  width: 80px;
  background: linear-gradient(to right, var(--chaos-obsidian, #121210) 0%, transparent 100%);
  border-right: 1px solid var(--chaos-iron, #2a2820);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 2rem 0;
  z-index: 100;
}

.rune {
  font-size: 1.5rem;
  color: var(--chaos-gold-dark, #8b7017);
  opacity: 0.5;
  animation: runeGlow 4s ease-in-out infinite;
}

@keyframes runeGlow {
  0%, 100% { opacity: 0.3; text-shadow: none; }
  50% { opacity: 0.8; text-shadow: 0 0 10px var(--chaos-gold, #c9a227); }
}

.items {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.glyph {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--chaos-font-display, 'Cinzel Decorative', serif);
  font-size: 1rem;
  color: var(--chaos-bone-dark, #9a8b6f);
  text-decoration: none;
  border: 1px solid var(--chaos-iron, #2a2820);
  position: relative;
  transition: all 0.4s;
}

.glyph::before {
  content: attr(data-label);
  position: absolute;
  left: 60px;
  font-family: var(--chaos-font-serif, 'Cinzel', serif);
  font-size: 0.6rem;
  letter-spacing: 0.3em;
  color: var(--chaos-bone-dark, #9a8b6f);
  opacity: 0;
  transform: translateX(-10px);
  transition: all 0.3s;
  white-space: nowrap;
  text-transform: uppercase;
}

.glyph:hover {
  color: var(--chaos-gold, #c9a227);
  border-color: var(--chaos-gold, #c9a227);
  background: rgba(201, 162, 39, 0.1);
}

.glyph:hover::before {
  opacity: 1;
  transform: translateX(0);
}

.glyphActive {
  color: var(--chaos-gold, #c9a227);
  border-color: var(--chaos-gold, #c9a227);
  box-shadow: 0 0 15px rgba(201, 162, 39, 0.3);
}

/* Variants */
.variantDark {
  background: linear-gradient(to right, var(--chaos-void, #0a0a0a) 0%, transparent 100%);
  border-right-color: var(--chaos-blood, #ff0040);
}

.variantDark .rune {
  color: var(--chaos-blood, #ff0040);
}

.variantDark .glyph {
  border-color: rgba(255, 0, 64, 0.3);
}

.variantDark .glyph:hover {
  color: var(--chaos-blood, #ff0040);
  border-color: var(--chaos-blood, #ff0040);
  background: rgba(255, 0, 64, 0.1);
}

/* Size variants */
.sizeCompact {
  width: 50px;
  padding: 1rem 0;
}

.sizeCompact .glyph {
  width: 30px;
  height: 30px;
  font-size: 0.8rem;
}

.sizeCompact .rune {
  font-size: 1rem;
}