/* ========================================
   PORTFOLIO: FILTER BAR
   ======================================== */
.filter-bar { display: flex; gap: var(--space-sm); flex-wrap: wrap; padding-bottom: var(--space-xl); }

.filter-btn {
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.filter-btn:hover { color: var(--color-text); border-color: var(--color-text-secondary); }
.filter-btn--active { color: #fff; background: var(--color-accent); border-color: var(--color-accent); }
.filter-btn--active:hover { color: #fff; background: var(--color-accent-hover); border-color: var(--color-accent-hover); }

/* ========================================
   PORTFOLIO: GRID
   ======================================== */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  padding-bottom: var(--space-3xl);
}

.portfolio-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  overflow: hidden;
  cursor: pointer;
  transition: border-color 0.15s ease;
}

.portfolio-item:hover { border-color: var(--color-text-secondary); }
.portfolio-item:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }
.portfolio-item[aria-hidden="true"] { display: none; }

.portfolio-item__image {
  aspect-ratio: 4 / 3;
  background: var(--color-bg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.portfolio-item__image-placeholder {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-secondary);
  text-align: center;
  padding: var(--space-md);
}

.portfolio-item__info { padding: var(--space-md) var(--space-lg); border-top: 1px solid var(--color-border); }
.portfolio-item__title { font-size: 14px; font-weight: 500; }
.portfolio-item__meta { display: flex; align-items: center; gap: var(--space-md); margin-top: 4px; }
.portfolio-item__type { font-family: var(--font-mono); font-size: 12px; color: var(--color-text-secondary); }
.portfolio-item__formats { font-family: var(--font-mono); font-size: 11px; color: var(--color-border); }

/* ========================================
   PORTFOLIO: LIGHTBOX
   ======================================== */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(26, 26, 26, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
}

.lightbox-overlay * { pointer-events: auto; }

.lightbox-close {
  position: fixed;
  top: var(--space-lg);
  right: var(--space-lg);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 28px;
  border-radius: 4px;
  z-index: 1002;
}

.lightbox-close:hover, .lightbox-close:focus-visible { background: rgba(255, 255, 255, 0.1); }

/* Item navigation (between portfolio items) */
.lightbox-item-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 32px;
  border-radius: 4px;
  z-index: 1002;
}

.lightbox-item-nav:hover, .lightbox-item-nav:focus-visible { background: rgba(255, 255, 255, 0.1); }
.lightbox-item-nav--prev { left: var(--space-md); }
.lightbox-item-nav--next { right: var(--space-md); }

.lightbox-card {
  max-width: 900px;
  width: 100%;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  overflow: hidden;
  z-index: 1001;
}

/* ========================================
   PORTFOLIO: IMAGE CAROUSEL
   ======================================== */
.lightbox-carousel {
  position: relative;
  aspect-ratio: 16 / 10;
  background: var(--color-bg);
  overflow: hidden;
}

.lightbox-carousel__track {
  display: flex;
  width: 100%;
  height: 100%;
  transition: transform 0.3s ease;
}

.lightbox-carousel__slide {
  min-width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lightbox-carousel__slide img { width: 100%; height: 100%; object-fit: contain; }

.lightbox-carousel__slide-placeholder {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-text-secondary);
}

.lightbox-carousel__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.85);
  color: var(--color-text);
  font-size: 20px;
  border-radius: 50%;
  z-index: 2;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
}

.lightbox-carousel__arrow:hover { background: #fff; }
.lightbox-carousel__arrow--prev { left: var(--space-sm); }
.lightbox-carousel__arrow--next { right: var(--space-sm); }

.lightbox-carousel__dots {
  position: absolute;
  bottom: var(--space-sm);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 2;
}

.lightbox-carousel__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  border: 1px solid rgba(0, 0, 0, 0.15);
  padding: 0;
  transition: background 0.15s ease;
}

.lightbox-carousel__dot--active { background: #fff; }

.lightbox-counter {
  position: absolute;
  top: var(--space-sm);
  right: var(--space-sm);
  font-family: var(--font-mono);
  font-size: 11px;
  color: #fff;
  background: rgba(0, 0, 0, 0.5);
  padding: 2px 8px;
  border-radius: 3px;
  z-index: 2;
}

/* ========================================
   PORTFOLIO: LIGHTBOX DETAILS
   ======================================== */
.lightbox-details { padding: var(--space-lg) var(--space-xl); border-top: 1px solid var(--color-border); }
.lightbox-title { font-size: 18px; font-weight: 600; margin-bottom: var(--space-xs); }
.lightbox-type { font-family: var(--font-mono); font-size: 13px; color: var(--color-accent); margin-bottom: var(--space-md); }
.lightbox-desc { font-size: 15px; color: var(--color-text-secondary); line-height: 1.6; max-width: 600px; }

.lightbox-formats {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--color-text-secondary);
  margin-top: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

/* ========================================
   PORTFOLIO: CLIENT BUILDS (Phase 2)
   ======================================== */
.client-builds {
  border-top: 1px solid var(--color-border);
  padding: var(--space-3xl) 0;
  display: none;
}

.client-builds__header { margin-bottom: var(--space-xl); }
.client-builds__header p { color: var(--color-text-secondary); font-size: 15px; margin-top: var(--space-xs); }

/* ========================================
   RESPONSIVE: TABLET
   ======================================== */
@media (max-width: 1023px) {
  .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
}

/* ========================================
   RESPONSIVE: MOBILE
   ======================================== */
@media (max-width: 767px) {
  .portfolio-grid { grid-template-columns: 1fr; }
  .lightbox-overlay { padding: var(--space-md); }
  .lightbox-card { max-width: 100%; }
  .lightbox-item-nav { width: 36px; height: 36px; font-size: 24px; }
  .lightbox-details { padding: var(--space-md) var(--space-lg); }
}