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

:root {
  --nav-h: 56px;
  --gap: 6px;
  --font: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

html, body {
  background: #fff;
  color: #111;
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}

/* ── HEADER ── */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 28px;
  background: #fff;
  border-bottom: 1px solid #e8e8e8;
}

.nav-row {
  display: flex;
  align-items: center;
  gap: 20px;
}

.burger {
  background: none;
  border: none;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  transition: transform 0.45s ease;
  flex-shrink: 0;
}

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

.burger span {
  display: block;
  width: 33px;
  height: 2px;
  background: #111;
}

.nav-items {
  display: flex;
  align-items: center;
  gap: 24px;
  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: 400px; opacity: 1; }

.nav-items a {
  font-size: 15px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #111;
  text-decoration: none;
  opacity: 0.5;
}

.nav-items a.active,
.nav-items a:hover { opacity: 1; }

.header-brand {
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #111;
  text-decoration: none;
}

/* ── GRID ── */
.grid {
  margin-top: var(--nav-h);
  padding: 60px 140px;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.grid-item {
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 3 / 4;
}

.grid-item {
  position: relative;
}

.grid-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0);
  transition: background 0.35s ease;
  pointer-events: none;
}

.grid-item:hover::after {
  background: rgba(0,0,0,0.35);
}

.grid-item img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.label {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  text-align: center;
  padding: 20px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 29px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: #fff;
  opacity: 0;
  transition: opacity 0.35s ease;
  z-index: 1;
  pointer-events: none;
}

.grid-item:hover .label {
  opacity: 1;
}

/* "View project" cue — touch devices only; hover already signals clickability */
.label-cta {
  display: none;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.85);
}

.label-arrow {
  display: inline-block;
  font-size: 13px;
  transition: transform 0.45s ease 0.12s;
}

/* ── TOUCH: scroll-activated tile ── */
@media (hover: none) {
  .grid-item.is-active::after { background: rgba(0,0,0,0.5); }

  .grid-item.is-active .label { opacity: 1; }

  .label-cta {
    display: inline-flex;
    opacity: 0;
    transform: translateY(6px);
    transition: opacity 0.4s ease 0.1s, transform 0.4s ease 0.1s;
  }

  .grid-item.is-active .label-cta {
    opacity: 1;
    transform: translateY(0);
  }

  .grid-item.is-active .label-arrow { transform: translateX(5px); }
}

@media (prefers-reduced-motion: reduce) {
  .label-cta,
  .label-arrow,
  .label,
  .grid-item::after { transition-duration: 0.01ms; }
  .label-cta { transform: none; }
  .grid-item.is-active .label-arrow { transform: none; }
}

/* ── RESPONSIVE ── */
@media (max-width: 1100px) {
  .grid { padding: 60px 60px; }
}

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, 1fr); padding: 40px 40px; }
}

@media (max-width: 540px) {
  .grid { grid-template-columns: 1fr; padding: 24px 16px; gap: 12px; }
  .header-brand { font-size: 11px; }
}

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