/**
 * partials/portfolio.css
 *
 * The DIGIT HQ — Portfolio Page Styles
 * Covers: filterable grid, single project layout,
 * all media renderers (image, gallery, video, PDF,
 * live URL iframe, before/after slider, demo embed, case study text).
 *
 * @package    TheDigit
 * @author     Sami Ullah
 * @version    1.0.0
 */

/* =============================================================================
   PORTFOLIO ARCHIVE — FILTER BAR
   ============================================================================= */
.portfolio-filters {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: .5rem;
  margin-bottom: var(--space-10);
}

.portfolio-filter-btn {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid var(--color-neural);
  border-radius: var(--radius-full);
  padding: .35rem .875rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.portfolio-filter-btn:hover {
  color: var(--color-text-primary);
  border-color: var(--color-neural-light);
}

.portfolio-filter-btn.is-active {
  color: var(--color-void);
  background: var(--color-electric);
  border-color: var(--color-electric);
}

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

/* Empty state when no results */
.portfolio-empty {
  display: none;
  text-align: center;
  padding: 4rem 0;
  color: var(--color-text-muted);
}

/* =============================================================================
   PORTFOLIO SINGLE — PROJECT LAYOUT
   ============================================================================= */

/* Hero cover image */
.project-cover {
  width: 100%;
  max-height: 560px;
  object-fit: cover;
  display: block;
  border-bottom: var(--border);
}

.project-cover-placeholder {
  height: 360px;
  background: linear-gradient(135deg, var(--color-carbon), var(--color-void));
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: var(--border);
}

/* Two-column project layout: content + sidebar */
.project-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--space-12);
  align-items: start;
  padding-block: var(--space-12);
}

/* Sidebar: client, tech, links */
.project-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  position: sticky;
  top: 100px;
}

.project-sidebar__card {
  background: var(--color-carbon);
  border: var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.project-sidebar__label {
  font-family: var(--font-mono);
  font-size: 9px;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--color-electric);
  padding: .75rem 1rem;
  border-bottom: var(--border);
  display: block;
}

.project-sidebar__value {
  padding: .875rem 1rem;
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Tech tags in sidebar */
.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .375rem;
  padding: .875rem 1rem;
}

/* =============================================================================
   MEDIA SECTION — shared wrapper around every media item
   ============================================================================= */
.media-section {
  margin-bottom: var(--space-10);
}

.media-section__title {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--color-electric);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.media-section__title::before {
  content: '';
  display: block;
  width: 16px;
  height: 1px;
  background: var(--color-electric);
  opacity: .5;
}

.media-section__caption {
  margin-top: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-style: italic;
}

/* =============================================================================
   MEDIA TYPE: IMAGE (single)
   ============================================================================= */
.media-image {
  border-radius: var(--radius-lg);
  border: var(--border);
  overflow: hidden;
  background: var(--color-carbon);
}

.media-image img {
  width: 100%;
  display: block;
  transition: transform var(--transition-slow);
}

.media-image:hover img {
  transform: scale(1.01);
}

/* =============================================================================
   MEDIA TYPE: IMAGE GALLERY
   ============================================================================= */
.media-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-3);
}

.media-gallery__item {
  border-radius: var(--radius-md);
  border: var(--border);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--color-carbon);
  cursor: pointer;
  transition: border-color var(--transition-fast), transform var(--transition-base);
}

.media-gallery__item:hover {
  border-color: var(--color-electric);
  transform: scale(1.01);
}

.media-gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* Lightbox overlay */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(5, 5, 5, .95);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

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

.lightbox__img {
  max-width: 100%;
  max-height: 90vh;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.lightbox__close {
  position: absolute;
  top: var(--space-6);
  right: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  background: var(--color-carbon);
  border: var(--border);
  border-radius: var(--radius-sm);
  padding: .375rem .75rem;
  cursor: pointer;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.lightbox__close:hover {
  color: var(--color-electric);
  border-color: var(--color-electric);
}

.lightbox__nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-carbon);
  border: var(--border);
  border-radius: var(--radius-sm);
  padding: .75rem;
  cursor: pointer;
  color: var(--color-text-muted);
  font-size: var(--text-xl);
  transition: all var(--transition-fast);
  line-height: 1;
}

.lightbox__nav:hover { color: var(--color-electric); border-color: var(--color-electric); }
.lightbox__nav--prev { left: var(--space-6); }
.lightbox__nav--next { right: var(--space-6); }

/* =============================================================================
   MEDIA TYPE: VIDEO (hosted file)
   ============================================================================= */
.media-video {
  border-radius: var(--radius-lg);
  border: var(--border);
  overflow: hidden;
  background: #000;
}

.media-video video {
  width: 100%;
  display: block;
  max-height: 540px;
}

/* =============================================================================
   MEDIA TYPE: VIDEO EMBED (YouTube / Vimeo)
   ============================================================================= */
.media-video-embed {
  border-radius: var(--radius-lg);
  border: var(--border);
  overflow: hidden;
  background: #000;
  position: relative;
  aspect-ratio: 16/9;
}

.media-video-embed iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* =============================================================================
   MEDIA TYPE: PDF VIEWER
   ============================================================================= */
.media-pdf {
  border-radius: var(--radius-lg);
  border: var(--border);
  overflow: hidden;
  background: var(--color-carbon);
}

.media-pdf__toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .75rem 1rem;
  border-bottom: var(--border);
}

.media-pdf__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--color-electric);
  text-transform: uppercase;
}

.media-pdf iframe {
  width: 100%;
  height: 600px;
  border: none;
  display: block;
}

/* =============================================================================
   MEDIA TYPE: LIVE URL (iframe embed)
   ============================================================================= */
.media-live-url {
  border-radius: var(--radius-lg);
  border: var(--border);
  overflow: hidden;
  background: #fff;
}

.media-live-url__bar {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: .625rem 1rem;
  background: var(--color-carbon);
  border-bottom: var(--border);
}

/* Browser chrome dots */
.media-live-url__dots {
  display: flex;
  gap: 5px;
}

.media-live-url__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-neural-light);
}

.media-live-url__dot:nth-child(1) { background: #ff5f57; }
.media-live-url__dot:nth-child(2) { background: #ffbd2e; }
.media-live-url__dot:nth-child(3) { background: #28c840; }

.media-live-url__address {
  flex: 1;
  background: var(--color-void);
  border: var(--border);
  border-radius: var(--radius-sm);
  padding: .25rem .75rem;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.media-live-url iframe {
  width: 100%;
  height: 560px;
  border: none;
  display: block;
}

/* =============================================================================
   MEDIA TYPE: BEFORE / AFTER SLIDER
   ============================================================================= */
.before-after {
  position: relative;
  border-radius: var(--radius-lg);
  border: var(--border);
  overflow: hidden;
  user-select: none;
  touch-action: none;
}

.before-after__after {
  display: block;
  width: 100%;
}

.before-after__before-wrap {
  position: absolute;
  inset: 0;
  overflow: hidden;
  width: 50%; /* JS adjusts this */
}

.before-after__before {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0;
  left: 0;
}

/* Divider line */
.before-after__divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 2px;
  background: var(--color-electric);
  cursor: ew-resize;
  z-index: 2;
}

/* Drag handle circle */
.before-after__handle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  background: var(--color-electric);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: var(--color-void);
  font-weight: 700;
  box-shadow: 0 0 0 4px rgba(251,255,0,.2);
  cursor: ew-resize;
  z-index: 3;
}

/* Labels */
.before-after__label {
  position: absolute;
  bottom: var(--space-4);
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  background: rgba(5,5,5,.8);
  border: 1px solid rgba(255,255,255,.1);
  border-radius: var(--radius-sm);
  padding: .25rem .625rem;
  color: #fff;
  pointer-events: none;
  z-index: 2;
}

.before-after__label--before { left: var(--space-4); }
.before-after__label--after  { right: var(--space-4); }

/* =============================================================================
   MEDIA TYPE: DEMO EMBED (CodePen, JSFiddle, custom iframe)
   ============================================================================= */
.media-demo {
  border-radius: var(--radius-lg);
  border: 1px solid rgba(251,255,0,.15);
  overflow: hidden;
  background: var(--color-carbon);
}

.media-demo__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: .75rem 1rem;
  border-bottom: var(--border);
  background: var(--color-void);
}

.media-demo__label {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .1em;
  color: var(--color-electric);
  text-transform: uppercase;
}

.media-demo iframe {
  width: 100%;
  height: 480px;
  border: none;
  display: block;
}

/* =============================================================================
   MEDIA TYPE: CASE STUDY TEXT BLOCK
   ============================================================================= */
.media-case-text {
  border-left: 2px solid var(--color-electric);
  padding: var(--space-6) var(--space-8);
  background: var(--color-carbon);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.media-case-text h3,
.media-case-text h4 {
  font-family: var(--font-display);
  color: var(--color-text-primary);
  margin-bottom: var(--space-3);
}

.media-case-text p {
  color: var(--color-text-secondary);
  line-height: 1.85;
  margin-bottom: var(--space-4);
}

.media-case-text p:last-child { margin-bottom: 0; }

.media-case-text ul {
  padding-left: 1.25rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-4);
}

.media-case-text li { margin-bottom: .375rem; }
.media-case-text ul li::marker { color: var(--color-electric); }

/* =============================================================================
   RELATED PROJECTS SECTION
   ============================================================================= */
.related-projects {
  padding-block: var(--space-16);
  border-top: var(--border);
  background: var(--color-carbon);
}

/* =============================================================================
   RESPONSIVE — PORTFOLIO SINGLE
   ============================================================================= */
@media (max-width: 1024px) {
  .project-layout {
    grid-template-columns: 1fr;
  }

  .project-sidebar {
    position: static;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
}

@media (max-width: 640px) {
  .project-sidebar {
    grid-template-columns: 1fr;
  }

  .media-gallery {
    grid-template-columns: 1fr 1fr;
  }
}