*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

html, body {
  width: 100%; height: 100%;
  overflow: hidden;
  background: #000;
}

.slides {
  position: fixed;
  inset: 0;
}

.slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.2s ease;
}

.slide.active { opacity: 1; }

.slide::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.35);
}

/* UI LAYER */
.ui {
  position: fixed;
  inset: 0;
  z-index: 10;
  pointer-events: none;
}

/* NAV ROW */
.nav-row {
  position: absolute;
  top: 22px;
  left: 28px;
  display: flex;
  align-items: center;
  gap: 24px;
  pointer-events: all;
}

/* BURGER */
.burger {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  flex-shrink: 0;
  transition: transform 0.5s ease;
}

.burger.open {
  transform: rotate(90deg);
}

.burger span {
  display: block;
  width: 33px;
  height: 2px;
  background: rgba(255,255,255,0.85);
}

/* NAV ITEMS */
.nav-items {
  display: flex;
  align-items: center;
  gap: 28px;
  overflow: hidden;
  max-width: 0;
  opacity: 0;
  transition: max-width 0.45s ease, opacity 0.35s ease;
  white-space: nowrap;
}

.nav-items.open {
  max-width: 300px;
  opacity: 1;
}

.nav-items a {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 15px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-items a:hover { color: #fff; }

/* CENTRE LABEL */
.ui-center {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 28.5px;
  line-height: 1.45;
  letter-spacing: 0.2em;
  text-indent: 0.2em;
  text-align: center;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  max-width: calc(100vw - 48px);
  pointer-events: none;
}

.header:has(.burger.open) .header-brand {
  display: none;
}