/* ============================================
   PORTFOLIO PAGE
   ============================================ */

/* Page hero (shared across inner pages) */
.page-hero {
  padding-top: var(--header-h);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--clr-border);
}

.page-hero-inner {
  padding-top: var(--space-lg);
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-md);
}

.page-hero-title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 300;
  line-height: 1.05;
  color: var(--clr-white);
}

.page-hero-title em {
  font-style: italic;
  color: var(--clr-accent);
}

.page-hero-desc {
  max-width: 340px;
  font-size: var(--fs-sm);
  color: var(--clr-muted);
  line-height: 1.8;
}

/* ---- CATEGORY TABS ---- */
.portfolio-tabs {
  position: sticky;
  top: var(--header-h);
  z-index: 100;
  background: rgba(13,13,13,0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--clr-border);
}

.tabs-inner {
  display: flex;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.tabs-inner::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  flex-shrink: 0;
  padding: 1.1rem 1.8rem;
  font-family: var(--font-body);
  font-size: var(--fs-xs);
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-muted);
  border-bottom: 2px solid transparent;
  transition: all var(--dur-fast) var(--ease);
  cursor: pointer;
  background: none;
  border-left: none;
  border-right: none;
  border-top: none;
}

.tab-btn:hover {
  color: var(--clr-text);
}

.tab-btn.active {
  color: var(--clr-accent);
  border-bottom-color: var(--clr-accent);
}

/* ---- CATEGORY SECTION ---- */
.portfolio-section {
  padding: var(--space-xl) 0;
  border-bottom: 1px solid var(--clr-border);
}

.portfolio-section:last-child {
  border-bottom: none;
}

.category-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-lg);
}

.category-title {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  font-weight: 300;
  color: var(--clr-white);
}

.category-count {
  font-size: var(--fs-xs);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--clr-muted);
}

/* ---- ALBUM GRID (categories inside a section) ---- */
.album-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: var(--space-sm);
}

.album-card {
  position: relative;
  cursor: pointer;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--clr-surface);
}

.album-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--dur-slow) var(--ease);
}

/* Album placeholder */
.album-placeholder {
  width: 100%;
  height: 100%;
  background: var(--clr-surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--dur-slow) var(--ease);
}

.album-placeholder-icon {
  font-size: 2.5rem;
  opacity: 0.2;
}

.album-card:hover .album-card-img,
.album-card:hover .album-placeholder {
  transform: scale(1.05);
}

.album-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13,13,13,0.88) 0%, transparent 55%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-sm) var(--space-md);
  transition: background var(--dur-mid) var(--ease);
}

.album-card:hover .album-card-overlay {
  background: linear-gradient(to top, rgba(13,13,13,0.95) 0%, rgba(13,13,13,0.3) 55%);
}

.album-name {
  font-family: var(--font-display);
  font-size: var(--fs-md);
  font-weight: 300;
  color: var(--clr-white);
}

.album-count {
  font-size: var(--fs-xs);
  color: var(--clr-accent);
  letter-spacing: 0.15em;
}

/* ---- LIGHTBOX ---- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9000;
  background: rgba(0,0,0,0.97);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-mid) var(--ease);
}

.lightbox.open {
  opacity: 1;
  pointer-events: all;
}

.lightbox-close {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  width: 44px;
  height: 44px;
  border: 1px solid var(--clr-border);
  color: var(--clr-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  cursor: pointer;
  background: none;
  transition: all var(--dur-fast) var(--ease);
  z-index: 9001;
}

.lightbox-close:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
}

.lightbox-img {
  max-width: 90vw;
  max-height: 88vh;
  object-fit: contain;
  border: 1px solid var(--clr-border);
}

.lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 48px;
  height: 48px;
  border: 1px solid var(--clr-border);
  color: var(--clr-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  cursor: pointer;
  background: rgba(0,0,0,0.5);
  transition: all var(--dur-fast) var(--ease);
}

.lightbox-nav:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
}

.lightbox-prev { left: var(--space-md); }
.lightbox-next { right: var(--space-md); }

.lightbox-caption {
  position: absolute;
  bottom: var(--space-md);
  left: 50%;
  transform: translateX(-50%);
  font-size: var(--fs-xs);
  letter-spacing: 0.15em;
  color: var(--clr-muted);
  white-space: nowrap;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .page-hero-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .category-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-xs);
  }

  .album-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .lightbox-nav {
    display: none;
  }
}

@media (max-width: 400px) {
  .album-grid {
    grid-template-columns: 1fr;
  }
}