/* ============================================================
   portfolio-page.css — Mosaic grid + full-screen viewer
   Used on portfolio.html only
   ============================================================ */

/* ── Portfolio Header ────────────────────────────────────────── */
.pf-header {
  background:  #e8e4df;
  padding:     6rem 1.5rem 2rem;
  text-align:  center;
}

.pf-title {
  font-family:    'Cormorant Garamond', serif;
  font-size:      2.4rem;
  font-weight:    300;
  letter-spacing: 0.06em;
  color:          #2a2a2a;
  margin-bottom:  1.5rem;
}

.pf-header .portfolio-filters {
  justify-content: center;
}

.pf-header .filter-btn {
  border-color: rgba(0, 0, 0, 0.2);
  color:        rgba(0, 0, 0, 0.45);
}

.pf-header .filter-btn.active,
.pf-header .filter-btn:hover {
  border-color: #8b7a5e;
  color:        #8b7a5e;
}

/* Smooth scroll for portfolio page */
.portfolio-page {
  scroll-behavior: auto;
  -webkit-overflow-scrolling: touch;
}

/* ── Portfolio Grid ─────────────────────────────────────────── */
#pfGrid {
  display:        flex;
  flex-direction: column;
  gap:            3px;
  background:     #e8e4df;
  padding-top:    0;
  min-height:     100vh;
}

.pf-thumb {
  overflow:            hidden;
  cursor:              pointer;
  position:            relative;
  will-change:         transform;
  backface-visibility: hidden;
  transform:           translateZ(0);
}

.pf-thumb img {
  width:               100%;
  height:              100%;
  object-fit:          cover;
  display:             block;
  will-change:         transform;
  backface-visibility: hidden;
  transform:           translateZ(0);
  transition:          transform 0.5s ease, filter 0.5s ease;
  filter:              brightness(0.88);
}

.pf-thumb:hover img {
  transform: translateZ(0) scale(1.03);
  filter:    brightness(1);
}

/* ── Full-screen Viewer ─────────────────────────────────────── */
#pfViewer {
  position:    fixed;
  inset:       0;
  z-index:     200;
  background:  #000;
  overflow:    hidden;
  opacity:     0;
  visibility:  hidden;
  transition:  opacity 0.35s ease, visibility 0s 0.35s;
  touch-action: pan-y;
}

#pfViewer.open {
  opacity:    1;
  visibility: visible;
  transition: opacity 0.35s ease;
}

.pf-viewer-bar {
  position:        fixed;
  top:             0;
  left:            0;
  right:           0;
  z-index:         201;
  display:         flex;
  justify-content: space-between;
  align-items:     center;
  padding:         1.6rem 2.5rem;
  background:      linear-gradient(to bottom, rgba(0, 0, 0, 0.75) 0%, transparent 100%);
  pointer-events:  none;
}

.pf-viewer-bar > * {
  pointer-events: all;
}

.pf-close {
  background:     none;
  border:         none;
  color:          rgba(255, 255, 255, 0.75);
  font-family:    'Montserrat', sans-serif;
  font-size:      0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  cursor:         pointer;
  transition:     color 0.3s ease;
  padding:        0;
}

.pf-close:hover {
  color: #fff;
}

.pf-counter {
  font-family:    'Montserrat', sans-serif;
  font-size:      0.65rem;
  letter-spacing: 0.12em;
  color:          rgba(255, 255, 255, 0.45);
}

/* ── Arrow buttons (desktop) ── */
.pf-arrow {
  position:    fixed;
  top:         50%;
  transform:   translateY(-50%);
  z-index:     202;
  background:  none;
  border:      none;
  color:       rgba(255, 255, 255, 0.25);
  font-size:   4rem;
  line-height: 1;
  cursor:      pointer;
  padding:     1rem 1.2rem;
  transition:  color 0.3s ease, opacity 0.3s ease;
  user-select: none;
}

.pf-arrow:hover {
  color: rgba(255, 255, 255, 0.7);
}

.pf-arrow-left  { left:  1rem; }
.pf-arrow-right { right: 1rem; }

/* Hide arrows on touch devices */
@media (hover: none) and (pointer: coarse) {
  .pf-arrow { display: none; }
}

/* ── Slides track ── */
#pfSlides {
  display:             flex;
  flex-direction:      row;
  height:              100vh;
  will-change:         transform;
  transition:          transform 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
}

/* While dragging, disable CSS transition so it follows the finger */
#pfSlides.dragging {
  transition: none;
}

.pf-slide {
  min-width:           100vw;
  width:               100vw;
  height:              100vh;
  display:             flex;
  align-items:         center;
  justify-content:     center;
  background:          #000;
  flex-shrink:         0;
  will-change:         transform;
  backface-visibility: hidden;
  transform:           translateZ(0);
}

.pf-slide img {
  max-width:           92%;
  max-height:          90vh;
  width:               auto;
  height:              auto;
  object-fit:          contain;
  display:             block;
  user-select:         none;
  -webkit-user-drag:   none;
  pointer-events:      none;
  will-change:         transform;
  backface-visibility: hidden;
  transform:           translateZ(0);
}

/* ── Portfolio page nav ─────────────────────────────────────── */
.portfolio-page #pfGrid {
  padding-top: 0;
}

/* Fade nav when scrolling */
.portfolio-page #navbar {
  transition: background 0.4s ease, backdrop-filter 0.4s ease, opacity 0.4s ease;
}

.portfolio-page #navbar.faded {
  opacity: 0.15;
  pointer-events: none;
}

.portfolio-page #navbar.faded:hover {
  opacity: 1;
  pointer-events: all;
}

/* Also fade the portfolio header */
.pf-header {
  transition: opacity 0.4s ease;
}

.pf-header.faded {
  opacity: 0.15;
}

/* ── Mobile ─────────────────────────────────────────────────── */
@media (max-width: 767px) {
  .pf-viewer-bar {
    padding: 1.2rem 1.5rem;
  }
}