/* ============================================================
   projects.css
============================================================ */
#projects {
  background: var(--white);
}

.projects-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 32px;
}

/* ── FILTER BUTTONS ── */
.filter-row {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 8px 22px;
  border: 1px solid var(--grey-200);
  background: transparent;
  color: var(--grey-400);
  font-family: var(--font-ui);
  font-weight: 700;
  font-size: .72rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  transition: all var(--trans-med);
  cursor: pointer;
}
.filter-btn.active,
.filter-btn:hover {
  background: var(--royal);
  border-color: var(--royal);
  color: var(--white);
}

/* ── MASONRY GRID ── */
.projects-masonry {
  columns: 3;
  column-gap: 4px;
  margin-top: 8px;
}
.project-item {
  break-inside: avoid;
  margin-bottom: 4px;
  position: relative;
  overflow: hidden;
  cursor: pointer;
}
.project-item img {
  width: 100%;
  display: block;
  filter: saturate(.7) brightness(.88);
  transition: filter .55s var(--ease-expo), transform .55s var(--ease-expo);
}
.project-item:hover img {
  filter: saturate(1) brightness(1.04);
  transform: scale(1.04);
}

/* ── OVERLAY ── */
.project-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(0deg, rgba(10,22,40,.92) 0%, rgba(10,22,40,.18) 55%, transparent 100%);
  display: flex;
  align-items: flex-end;
  padding: 22px;
  opacity: 0;
  transition: opacity .35s;
}
.project-item:hover .project-overlay { opacity: 1; }
.project-title {
  font-family: var(--font-ui);
  font-weight: 800;
  font-size: 1.05rem;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--white);
  transform: translateY(10px);
  transition: transform .35s var(--ease-expo);
}
.project-item:hover .project-title { transform: translateY(0); }
.project-tag {
  font-size: .65rem;
  color: var(--royal-light);
  letter-spacing: .14em;
  text-transform: uppercase;
  transform: translateY(8px);
  transition: transform .35s var(--ease-expo) .04s;
}
.project-item:hover .project-tag { transform: translateY(0); }

/* ── FILTERED OUT STATE ── */
.project-item.hidden {
  opacity: .15;
  pointer-events: none;
  transition: opacity .4s;
}

/* ── LIGHTBOX ── */
.lightbox {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(5,10,20,.97);
  backdrop-filter: blur(24px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity .35s;
}
.lightbox.open { opacity: 1; pointer-events: all; }
.lb-img {
  max-width: 88vw;
  max-height: 84vh;
  object-fit: contain;
  border: 1px solid rgba(30,64,175,.25);
  box-shadow: 0 40px 100px rgba(0,0,0,.7);
}
.lb-close {
  position: absolute;
  top: 24px; right: 32px;
  font-size: 2rem;
  color: rgba(255,255,255,.45);
  background: none; border: none;
  transition: color var(--trans-fast);
  line-height: 1;
}
.lb-close:hover { color: var(--white); }
.lb-btn {
  position: absolute; top: 50%;
  transform: translateY(-50%);
  background: rgba(30,64,175,.3);
  border: 1px solid rgba(30,64,175,.45);
  color: var(--white);
  font-size: 1.5rem;
  padding: 14px 20px;
  transition: background var(--trans-fast);
}
.lb-btn:hover { background: var(--royal); }
.lb-btn.prev { left: 20px; }
.lb-btn.next { right: 20px; }
.lb-caption {
  position: absolute;
  bottom: 28px; left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-ui);
  font-size: .88rem;
  letter-spacing: .1em;
  color: rgba(255,255,255,.42);
  text-transform: uppercase;
  white-space: nowrap;
}