/* portfolio.css — Portfolio Gallery System
   Jason Englund Business Portal
   All styles use existing design tokens from style.css
   Dark and light mode compatible
*/

/* ============================================================
   PORTFOLIO SECTION WRAPPER
   ============================================================ */

.portfolio {
  background: var(--color-bg);
}

/* ============================================================
   FILTER PILLS
   (inherits .filter-pill, .filter-pill--active from blog.css)
   ============================================================ */

.portfolio-filters {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-bottom: var(--space-1);
  margin-top: var(--space-10);
  margin-bottom: var(--space-8);
}

.portfolio-filters::-webkit-scrollbar {
  display: none;
}

/* ============================================================
   MASONRY GRID
   CSS Grid with row spanning for visual rhythm
   ============================================================ */

.portfolio-masonry {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  /* CSS masonry: dense packing */
  grid-auto-rows: 240px;
}

@media (max-width: 1023px) {
  .portfolio-masonry {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 220px;
  }
}

@media (max-width: 639px) {
  .portfolio-masonry {
    grid-template-columns: 1fr;
    grid-auto-rows: 260px;
  }
}

/* ============================================================
   MASONRY CARD
   ============================================================ */

.portfolio-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  cursor: pointer;
  grid-row: span 1;
  transition:
    box-shadow var(--transition-interactive),
    border-color var(--transition-interactive),
    transform var(--transition-interactive);
}

.portfolio-card--tall {
  grid-row: span 2;
}

.portfolio-card:hover {
  box-shadow: var(--shadow-xl);
  border-color: oklch(from var(--color-primary) l c h / 0.35);
  transform: translateY(-2px);
}

/* Hidden by filter */
.portfolio-card--hidden {
  display: none;
}

/* Card image */
.portfolio-card__img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 400ms var(--ease-out);
  display: block;
}

.portfolio-card:hover .portfolio-card__img {
  transform: scale(1.04);
}

/* Card overlay */
.portfolio-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    in oklab,
    oklch(0.06 0.01 250 / 0) 30%,
    oklch(0.06 0.01 250 / 0.65) 65%,
    oklch(0.05 0.01 250 / 0.92) 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-5);
  opacity: 0;
  transition: opacity 280ms var(--ease-out);
}

[data-theme="light"] .portfolio-card__overlay {
  background: linear-gradient(
    in oklab,
    oklch(0.95 0.005 250 / 0) 30%,
    oklch(0.1 0.01 250 / 0.7) 65%,
    oklch(0.05 0.01 250 / 0.92) 100%
  );
}

.portfolio-card:hover .portfolio-card__overlay {
  opacity: 1;
}

/* Always-visible bottom label on cards */
.portfolio-card__label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: var(--space-4) var(--space-5) var(--space-4);
  background: linear-gradient(
    in oklab,
    oklch(0.06 0.01 250 / 0) 0%,
    oklch(0.05 0.01 250 / 0.82) 100%
  );
  pointer-events: none;
}

[data-theme="light"] .portfolio-card__label {
  background: linear-gradient(
    in oklab,
    oklch(0.95 0.005 250 / 0) 0%,
    oklch(0.1 0.005 250 / 0.78) 100%
  );
}

.portfolio-card__name-label {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: #e8e8ed;
  line-height: 1.2;
}

/* Overlay content */
.portfolio-card__cats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-bottom: var(--space-2);
}

.portfolio-card__cat {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.portfolio-card__cat + .portfolio-card__cat::before {
  content: '·';
  margin-right: var(--space-1);
}

.portfolio-card__name {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: #e8e8ed;
  line-height: 1.2;
  margin-bottom: var(--space-2);
}

.portfolio-card__cta {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-primary);
  letter-spacing: 0.04em;
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* ============================================================
   LIGHTBOX OVERLAY
   ============================================================ */

.pf-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  background: oklch(0.05 0.01 250 / 0.96);
  backdrop-filter: blur(8px) saturate(120%);
  -webkit-backdrop-filter: blur(8px) saturate(120%);
  opacity: 0;
  pointer-events: none;
  transition: opacity 220ms var(--ease-out);
}

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

[data-theme="light"] .pf-lightbox {
  background: oklch(0.08 0.01 250 / 0.95);
}

/* ============================================================
   LIGHTBOX HEADER BAR
   ============================================================ */

.pf-lightbox__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid oklch(from #e8e8ed l c h / 0.1);
  flex-shrink: 0;
  gap: var(--space-4);
}

.pf-lightbox__title-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  min-width: 0;
}

.pf-lightbox__project-name {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  color: #e8e8ed;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pf-lightbox__cats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.pf-lightbox__cat {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.pf-lightbox__cat + .pf-lightbox__cat::before {
  content: '·';
  margin-right: var(--space-2);
  color: oklch(from #e8e8ed l c h / 0.4);
}

.pf-lightbox__header-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.pf-lightbox__counter {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: oklch(from #e8e8ed l c h / 0.5);
  white-space: nowrap;
}

.pf-lightbox__close {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid oklch(from #e8e8ed l c h / 0.15);
  color: oklch(from #e8e8ed l c h / 0.7);
  cursor: pointer;
  flex-shrink: 0;
  transition:
    background var(--transition-interactive),
    color var(--transition-interactive),
    border-color var(--transition-interactive);
}

.pf-lightbox__close:hover {
  background: oklch(from #e8e8ed l c h / 0.08);
  color: #e8e8ed;
  border-color: oklch(from #e8e8ed l c h / 0.3);
}

.pf-lightbox__close:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ============================================================
   LIGHTBOX MAIN STAGE
   ============================================================ */

.pf-lightbox__stage {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  min-height: 0;
}

/* Image wrapper for crossfade */
.pf-lightbox__img-wrap {
  position: relative;
  max-width: 90vw;
  max-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pf-lightbox__img {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  display: block;
  opacity: 1;
  transition: opacity 250ms var(--ease-out);
}

.pf-lightbox__img.is-fading {
  opacity: 0;
}

/* Nav arrows */
.pf-lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: oklch(0.1 0.01 250 / 0.7);
  border: 1px solid oklch(from #e8e8ed l c h / 0.15);
  color: #e8e8ed;
  cursor: pointer;
  transition:
    background var(--transition-interactive),
    border-color var(--transition-interactive),
    transform var(--transition-interactive);
  z-index: 10;
  backdrop-filter: blur(4px);
}

.pf-lightbox__nav:hover {
  background: oklch(0.2 0.01 250 / 0.85);
  border-color: oklch(from var(--color-primary) l c h / 0.4);
  transform: translateY(-50%) scale(1.05);
}

.pf-lightbox__nav:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.pf-lightbox__nav--prev {
  left: var(--space-4);
}

.pf-lightbox__nav--next {
  right: var(--space-4);
}

.pf-lightbox__nav:disabled {
  opacity: 0.25;
  cursor: default;
  pointer-events: none;
}

/* ============================================================
   THUMBNAIL STRIP
   ============================================================ */

.pf-lightbox__thumbs-wrap {
  flex-shrink: 0;
  padding: var(--space-3) var(--space-6);
  border-top: 1px solid oklch(from #e8e8ed l c h / 0.1);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: oklch(from #e8e8ed l c h / 0.2) transparent;
}

.pf-lightbox__thumbs-wrap::-webkit-scrollbar {
  height: 4px;
}

.pf-lightbox__thumbs-wrap::-webkit-scrollbar-track {
  background: transparent;
}

.pf-lightbox__thumbs-wrap::-webkit-scrollbar-thumb {
  background: oklch(from #e8e8ed l c h / 0.2);
  border-radius: 2px;
}

.pf-lightbox__thumbs {
  display: flex;
  gap: var(--space-2);
  height: 64px;
  width: max-content;
}

.pf-lightbox__thumb {
  width: 80px;
  height: 60px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  flex-shrink: 0;
  transition:
    border-color var(--transition-interactive),
    opacity var(--transition-interactive);
  opacity: 0.55;
}

.pf-lightbox__thumb:hover {
  opacity: 0.8;
  border-color: oklch(from #e8e8ed l c h / 0.3);
}

.pf-lightbox__thumb:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.pf-lightbox__thumb.is-active {
  border-color: var(--color-primary);
  opacity: 1;
}

.pf-lightbox__thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  display: block;
}

/* ============================================================
   LOADING SKELETON FOR CARDS
   ============================================================ */

.portfolio-card--loading .portfolio-card__img {
  background: var(--color-surface-2);
  animation: pf-shimmer 1.4s ease-in-out infinite;
}

@keyframes pf-shimmer {
  0%, 100% { opacity: 0.5; }
  50% { opacity: 1; }
}

/* ============================================================
   EMPTY STATE
   ============================================================ */

.portfolio-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-16) var(--space-8);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ============================================================
   RESPONSIVE ADJUSTMENTS
   ============================================================ */

@media (max-width: 767px) {
  .pf-lightbox__header {
    padding: var(--space-3) var(--space-4);
  }

  .pf-lightbox__nav {
    width: 40px;
    height: 40px;
  }

  .pf-lightbox__nav--prev {
    left: var(--space-2);
  }

  .pf-lightbox__nav--next {
    right: var(--space-2);
  }

  .pf-lightbox__thumbs-wrap {
    padding: var(--space-2) var(--space-4);
  }

  .pf-lightbox__thumb {
    width: 60px;
    height: 48px;
  }

  .portfolio-filters {
    margin-top: var(--space-8);
    flex-wrap: nowrap;
    overflow-x: auto;
  }
}

/* ============================================================
   FOCUS MANAGEMENT
   ============================================================ */

.pf-lightbox:focus {
  outline: none;
}

/* ============================================================
   PORTFOLIO SECTION — View All
   ============================================================ */

.portfolio-view-all {
  margin-top: var(--space-10);
  text-align: center;
}