/* ══════════════════════════════════════════════════
   PORTFOLIO PAGE (portfolio.html)
   Intro paragraph, then an interactive filter/sort bar
   above a card grid. Filtering and sorting re-flow the
   grid with a FLIP animation (scripts/portfolio-page.js)
   rather than snapping — cards that stay visible glide
   to their new position, newly-matched cards fade in.
   Depends on: tokens.css
   ══════════════════════════════════════════════════ */

@keyframes bgs {
  0%   { background-position: 0%   50%; }
  50%  { background-position: 100% 50%; }
  100% { background-position: 0%   50%; }
}

.pf-page__container {
  width: min(calc(100% - 2 * var(--content-inset)), var(--container-max));
  margin-inline: auto;
}

/* ── INTRO ────────────────────────────────────────── */

.pf-intro {
  background: var(--c1);
  padding: var(--space-8) 0 var(--space-7);
}

.pf-intro__body p {
  font-family: var(--fm);
  font-size: 1.8rem;
  font-weight: 400;
  line-height: 1.7;
  color: var(--t2);
  margin: 0;
  max-width: 84rem;
}

/* ── CONTENT WRAP ─────────────────────────────────── */

.pf-content {
  background: var(--c0);
  padding: var(--space-8) 0;
}

/* ── CONTROLS ─────────────────────────────────────── */

.pf-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-bottom: var(--space-7);
  padding-bottom: var(--space-6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.pf-filter-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-3) var(--space-6);
}

.pf-filter-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.pf-filter-group__label {
  font-family: var(--fm);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--t3);
  margin-right: var(--space-2);
}

.pf-chip {
  font-family: var(--fm);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--t2);
  background: var(--c1);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 10rem;
  padding: 0.7rem 1.6rem;
  cursor: pointer;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease, transform 0.15s ease;
}

.pf-chip:hover {
  color: var(--txt);
  border-color: rgba(255, 255, 255, 0.24);
}

.pf-chip.is-active {
  color: #fff;
  background: var(--gr);
  border-color: transparent;
}

.pf-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.pf-count {
  font-family: var(--fm);
  font-size: 1.3rem;
  color: var(--t3);
  margin: 0;
}

.pf-sort-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.pf-sort-wrap label {
  font-family: var(--fm);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--t3);
}

.pf-sort {
  font-family: var(--fm);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--txt);
  background: var(--c1);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 0.8rem;
  padding: 0.7rem 1.2rem;
  cursor: pointer;
}

/* ── GRID ─────────────────────────────────────────── */

.pf-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
}

.pf-item {
  display: flex;
  flex-direction: column;
  background: var(--c1);
  border-radius: var(--radius-lg, 1.2rem);
  overflow: hidden;
  will-change: transform;
}

.pf-item[hidden] {
  display: none;
}

.pf-item__media {
  position: relative;
  overflow: hidden;
}

.pf-item__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.pf-item__scale {
  position: absolute;
  right: var(--space-4);
  bottom: var(--space-4);
  z-index: 1;
  font-family: var(--fd);
  font-size: 2.2rem;
  font-weight: 900;
  color: #fff;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.5);
}

/* Design-system "Ruled Field" decorative overlay (Components → Shape Library →
   "Slide frames · Decorative overlays" → assets/svg/shapes/ruled-field.svg) — used as-is,
   not reinvented decoration. See reference_brand_objects_usage. z-index above the ::after
   scrim below so the overlay stays visible rather than getting darkened by it (same
   paint-order gotcha as the ghost-number badge on the homepage carousel). */
.pf-item__frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.pf-item__media::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.55), transparent 55%);
  pointer-events: none;
}

.pf-item__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: var(--space-5);
}

.pf-item__type {
  display: inline-block;
  align-self: flex-start;
  font-family: var(--fm);
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--a);
  margin: 0 0 var(--space-3);
}

.pf-item__title {
  font-family: var(--fd);
  font-size: clamp(1.7rem, 2vw, 1.9rem);
  font-weight: 900;
  letter-spacing: -0.01em;
  line-height: 1.2;
  color: var(--txt);
  margin: 0 0 var(--space-3);
}

.pf-item__meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--fm);
  font-size: 1.3rem;
  color: var(--t3);
  margin: 0 0 var(--space-4);
}

.pf-item__meta-sep {
  width: 3px;
  height: 3px;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--t3);
  opacity: 0.4;
}

.pf-item__desc {
  font-family: var(--fm);
  font-size: 1.4rem;
  line-height: 1.6;
  color: var(--t2);
  margin: 0 0 var(--space-4);
  flex: 1;
}

.pf-item__services {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}

.pf-item__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  align-self: flex-start;
  margin-top: var(--space-5);
  font-family: var(--fm);
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--a);
  text-decoration: none;
  transition: gap 0.2s ease, color 0.2s ease;
}

.pf-item__link svg {
  width: 1.6rem;
  height: 1.6rem;
  transition: transform 0.2s ease;
}

.pf-item__link:hover {
  color: var(--v);
  gap: var(--space-3);
}

.pf-item__link:hover svg {
  transform: translateX(3px);
}

.pf-item__service-tag {
  font-family: var(--fm);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--t3);
  background: var(--c0);
  border-radius: 0.6rem;
  padding: 0.4rem 0.9rem;
}

.pf-empty {
  display: none;
  text-align: center;
  padding: var(--space-8) 0;
  font-family: var(--fm);
  font-size: 1.6rem;
  color: var(--t3);
}

.pf-empty.is-visible {
  display: block;
}

/* ── LOAD MORE ────────────────────────────────────── */

.pf-load-more-wrap {
  display: flex;
  justify-content: center;
  margin-top: var(--space-7);
}

.pf-load-more[hidden] {
  display: none;
}

.pf-load-more {
  font-family: var(--fm);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--txt);
  background: var(--c1);
  border: 1px solid rgba(255, 255, 255, 0.14);
  border-radius: 10rem;
  padding: 1.3rem 3.2rem;
  cursor: pointer;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.pf-load-more:hover {
  border-color: var(--a);
  transform: translateY(-2px);
}

/* ── RESPONSIVE ───────────────────────────────────── */

@media (max-width: 1100px) {
  .pf-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

  .pf-meta-row {
    align-items: flex-start;
  }
}

@media (max-width: 600px) {
  .pf-intro {
    padding: var(--space-7) 0 var(--space-6);
  }

  .pf-content {
    padding: var(--space-7) 0;
  }
}

/* ── REDUCED MOTION ───────────────────────────────── */

@media (prefers-reduced-motion: reduce) {
  .pf-item {
    transition: none !important;
  }
}