.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-overlay);
  padding-block: var(--space-4);
  transition: background-color var(--transition-slow), border-bottom var(--transition-slow);
}
.nav--scrolled {
  background-color: var(--color-nav-scrolled);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-8);
}

/* Logo — Space Mono (GT Pressura Mono stijl) */
.nav__logo {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 700;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-text);
  transition: color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.3em;
}
.nav__logo:hover { color: var(--color-accent); }

/* Logo SVG — thema-afhankelijk tonen */
.nav__logo-img {
  display: block;
  height: 22px;
  width: auto;
}

/* Licht thema (standaard): dark variant zichtbaar */
.nav__logo-img--light { display: none;  }
.nav__logo-img--dark  { display: block; }

/* Donker thema: light variant zichtbaar */
[data-theme="dark"] .nav__logo-img--light { display: block; }
[data-theme="dark"] .nav__logo-img--dark  { display: none;  }

/* Hover: lichte brightness-boost */
.nav__logo:hover .nav__logo-img {
  filter: brightness(1.15);
}

/* Desktop links — altijd verborgen, alleen hamburger menu */
.nav__links {
  display: none;
}

/* Acties rechts */
.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* Theme toggle */
.nav__theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 5px 9px;
  font-size: var(--text-sm);
  line-height: 1;
  font-family: var(--font-mono);
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.nav__theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-accent);
}

/* Hamburger — altijd zichtbaar */
.nav__hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-2);
}
.nav__hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background-color: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base);
}
/* Hamburger → X */
.nav__hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}
.nav__hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav__hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-6.5px) rotate(-45deg);
}

/* ── Mobile menu — vliegt in van rechts ──────────────────────── */
.nav__mobile-menu {
  display: flex;
  position: fixed;
  inset: 0;
  background-color: var(--color-bg);
  z-index: calc(var(--z-overlay) - 1);
  padding: var(--space-32) var(--container-padding) var(--space-24);
  flex-direction: column;
  justify-content: center;
  gap: var(--space-2);

  transform: translateX(100%);
  visibility: hidden;
  pointer-events: none;
  transition:
    transform 0.55s var(--ease-out-expo),
    visibility 0s linear 0.55s;
}
.nav__mobile-menu.is-open {
  transform: translateX(0);
  visibility: visible;
  pointer-events: auto;
  transition:
    transform 0.55s var(--ease-out-expo),
    visibility 0s linear 0s;
}

/* Links vliegen staggered in */
.nav__mobile-link {
  font-family: var(--font-display);
  font-size: clamp(var(--text-4xl), 12vw, var(--text-7xl));
  font-weight: 400;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  line-height: var(--leading-tight);
  display: block;
  transform: translateY(40px);
  opacity: 0;
  transition:
    color var(--transition-fast),
    transform 0.5s var(--ease-out-expo),
    opacity 0.4s var(--ease-out-expo);
}
.nav__mobile-menu.is-open li:nth-child(1) .nav__mobile-link {
  transform: translateY(0); opacity: 1; transition-delay: 0.12s;
}
.nav__mobile-menu.is-open li:nth-child(2) .nav__mobile-link {
  transform: translateY(0); opacity: 1; transition-delay: 0.19s;
}
.nav__mobile-menu.is-open li:nth-child(3) .nav__mobile-link {
  transform: translateY(0); opacity: 1; transition-delay: 0.26s;
}
.nav__mobile-menu.is-open li:nth-child(4) .nav__mobile-link {
  transform: translateY(0); opacity: 1; transition-delay: 0.33s;
}
.nav__mobile-link:hover { color: var(--color-text); }

body.no-scroll { overflow: hidden; }