/* ════════════════════════════════════
   NAV — sidebar desktop / overlay mobile
   ════════════════════════════════════ */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--nav-w);
  height: 100vh;
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  z-index: 100;
  background: var(--bg);
  overflow-y: auto;
}

/* Scrollbar discrète */
.nav::-webkit-scrollbar { width: 2px; }
.nav::-webkit-scrollbar-track { background: transparent; }
.nav::-webkit-scrollbar-thumb { background: var(--line); }

/* ── Logo / titre ── */

.nav__logo {
  padding: 2rem 1.5rem 1.5rem;
  border-bottom: 1px solid var(--line);
  flex-shrink: 0;
}

.nav__logo a {
  display: block;
}

.nav__logo-name {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 400;
  letter-spacing: 0.02em;
  color: var(--text);
  line-height: 1.2;
}

.nav__logo-sub {
  font-size: 0.65rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-top: 0.3rem;
}

/* ── Label de section nav ── */

.nav__section-label {
  font-size: 0.6rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text-muted);
  padding: 1.4rem 1.5rem 0.5rem;
  opacity: 0.5;
}

/* ── Liste de liens ── */

.nav__list {
  flex: 1;
  padding: 0.5rem 0 1rem;
}

.nav__item a {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.45rem 1.5rem;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 300;
  color: var(--text-muted);
  letter-spacing: 0.04em;
  transition: color 0.2s ease;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.nav__item a:hover,
.nav__item a.active {
  color: var(--text);
}

.nav__item a.active {
  color: var(--accent);
}

.nav__num {
  font-size: 0.6rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  opacity: 0.5;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
}

.nav__item a.active .nav__num {
  opacity: 0.8;
}

/* ── Lien contact en bas ── */

.nav__footer {
  padding: 1.2rem 1.5rem;
  border-top: 1px solid var(--line);
  flex-shrink: 0;
}

.nav__contact {
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  transition: color 0.2s ease;
}

.nav__contact:hover {
  color: var(--accent);
}

.nav__contact-arrow {
  display: inline-block;
  transition: transform 0.2s ease;
}

.nav__contact:hover .nav__contact-arrow {
  transform: translateX(3px);
}

/* ════════════════════════════════════
   HAMBURGER — visible mobile seulement
   ════════════════════════════════════ */

.hamburger {
  display: none;
  position: fixed;
  top: 1.2rem;
  right: 1.2rem;
  z-index: 200;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}

.hamburger__line {
  width: 22px;
  height: 1px;
  background: var(--text);
  transition: transform 0.3s var(--ease), opacity 0.3s ease;
  transform-origin: center;
}

/* État ouvert */
.hamburger.is-open .hamburger__line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.hamburger.is-open .hamburger__line:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger.is-open .hamburger__line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ════════════════════════════════════
   MOBILE : overlay plein écran
   ════════════════════════════════════ */

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .nav {
    width: 100%;
    transform: translateX(-100%);
    transition: transform 0.4s var(--ease);
  }

  .nav.is-open {
    transform: translateX(0);
  }

  .nav__list {
    padding: 1rem 0 2rem;
  }

  .nav__item a {
    font-size: 1rem;
    padding: 0.7rem 2rem;
  }
}