/* ============================================================
   Portfolio Gallery Page
   ============================================================ */
.gallery {
  min-height: 100vh;
  background-color: var(--color-background);
  padding-top: var(--nav-height);
}

.gallery__header {
  padding: 3rem 2rem 2rem;
  max-width: 1280px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.gallery__back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-label);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-outline);
  transition: color var(--transition-fast);
}

.gallery__back:hover {
  color: var(--color-primary);
}

.gallery__title {
  font-family: var(--font-headline);
  font-size: clamp(1.75rem, 4vw, 3rem);
  color: var(--color-primary);
}

/* ============================================================
   Tabs
   ============================================================ */
.gallery__tabs {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  gap: 2rem;
  border-bottom: 1px solid var(--color-outline-variant);
}

.gallery__tab {
  font-family: var(--font-label);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-outline);
  background: none;
  border: none;
  padding: 0.75rem 0;
  cursor: pointer;
  position: relative;
  transition: color var(--transition-fast);
}

.gallery__tab::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-primary);
  transform: scaleX(0);
  transition: transform var(--transition-fast);
}

.gallery__tab--active {
  color: var(--color-primary);
}

.gallery__tab--active::after {
  transform: scaleX(1);
}

.gallery__tab:hover {
  color: var(--color-primary);
}

/* ============================================================
   Grid
   ============================================================ */
.gallery__grid {
  max-width: 1280px;
  margin: 0 auto;
  padding: 2rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  transition: opacity 0.2s ease;
}

.gallery__grid--fade {
  opacity: 0;
}

/* ============================================================
   Card
   ============================================================ */
.gallery__card {
  cursor: pointer;
  margin: 0;
  overflow: hidden;
}

.gallery__image {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease, opacity var(--transition-fast);
}

.gallery__card:hover .gallery__image {
  transform: scale(1.02);
  opacity: 0.9;
}

/* ============================================================
   Loading
   ============================================================ */
.gallery__loading {
  grid-column: 1 / -1;
  font-family: var(--font-label);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-outline);
  text-align: center;
  padding: 5rem 0;
}

/* ============================================================
   Empty State
   ============================================================ */
.gallery__empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 5rem 0;
}

.gallery__empty-text {
  font-family: var(--font-label);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-outline);
  margin-bottom: 1.5rem;
}

.gallery__empty-back {
  display: inline-block;
  font-family: var(--font-label);
  font-size: 11px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-primary);
  border-bottom: 1px solid rgba(0, 0, 0, 0.3);
  padding-bottom: 0.5rem;
  transition: border-color var(--transition-fast);
}

.gallery__empty-back:hover {
  border-bottom-color: var(--color-primary);
}

/* ============================================================
   Responsive — Tablet (768px+)
   ============================================================ */
@media (min-width: 768px) {
  .gallery__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }
}

/* ============================================================
   Responsive — Desktop (1024px+)
   ============================================================ */
@media (min-width: 1024px) {
  .gallery__grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
  }
}

/* ============================================================
   Responsive — Mobile (<768px)
   ============================================================ */
@media (max-width: 767px) {
  .gallery__header {
    padding: 2rem 1.25rem 1.5rem;
  }

  .gallery__tabs {
    padding: 0 1.25rem;
    gap: 1.5rem;
  }

  .gallery__grid {
    padding: 1.5rem 1.25rem;
  }
}