/* =============================================================
   PORTFOLIO PAGE — Hero, Filter, Masonry Grid, Lightbox, Stats
   Portfolio-Kategorie — Breadcrumb, Header, Filter, Foto-Grid, CTA
   Seiten: /portfolio, /portfolio/:kategorie
   Selektoren: .pf-*, .pk-*, .portfolio-empty-note
   ============================================================= */

/* Hero */
.pf-hero {
  background: var(--black);
  padding: clamp(120px, 14vw, 180px) clamp(32px, 6vw, 96px) clamp(48px, 6vw, 80px);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 40px;
}

.pf-hero-left {
  max-width: 600px;
}

.pf-hero-eyebrow {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
}

.pf-hero-eyebrow::before {
  content: '';
  width: 24px;
  height: 1px;
  background: var(--gold);
}

.pf-hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5.5vw, 5rem);
  font-weight: 300;
  color: var(--warm-white);
  line-height: 1.08;
  margin: 0;
}

.pf-hero h1 em {
  font-style: italic;
  color: rgba(255, 255, 255, 0.45);
}

.pf-hero-right {
  font-family: var(--font-body);
  font-size: 0.95rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.45);
  max-width: 380px;
  flex-shrink: 0;
}

.pf-hero-count {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 300;
  color: rgba(255, 255, 255, 0.1);
  margin-bottom: 8px;
}

/* Filter Bar */
.pf-filter {
  background: var(--black);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 0 clamp(32px, 6vw, 96px);
  display: flex;
  gap: 0;
  overflow-x: auto;
  position: sticky;
  top: 72px;
  z-index: 90;
  /* Scrollbalken auf Mobile ausblenden aber scrollbar lassen */
  scrollbar-width: none;
}

.pf-filter::-webkit-scrollbar {
  display: none;
}

.pf-filter-btn {
  flex: 1;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 20px 12px;
  text-align: center;
  font-family: var(--font-body);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.3s, border-bottom-color 0.3s;
  /* Touch-Target min 44px */
  min-height: 44px;
}

.pf-filter-btn:hover {
  color: rgba(255, 255, 255, 0.9);
}

.pf-filter-btn.active {
  color: var(--gold);
  border-bottom-color: var(--gold);
}

.pf-filter-btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: -2px;
}

/* Masonry Grid */
.pf-grid {
  background: var(--near-black);
  padding: 4px;
  column-count: 3;
  column-gap: 4px;
}

.pf-item {
  break-inside: avoid;
  margin-bottom: 4px;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  display: block;
}

.pf-item picture {
  display: block;
}

.pf-item img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform 0.6s cubic-bezier(0.25, 0, 0.25, 1), filter 0.6s ease;
  filter: brightness(0.85);
}

.pf-item:hover img,
.pf-item:focus-visible img {
  transform: scale(1.04);
  filter: brightness(1);
}

.pf-item-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(0, 0, 0, 0.7) 0%, transparent 50%);
  opacity: 0;
  transition: opacity 0.4s ease;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 28px;
  pointer-events: none;
}

.pf-item:hover .pf-item-overlay,
.pf-item:focus-visible .pf-item-overlay {
  opacity: 1;
}

.pf-item-cat {
  font-size: 0.58rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 6px;
}

.pf-item-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 400;
  font-style: italic;
  color: var(--warm-white);
}

/* Focus-Style fuer Tastaturnavigation */
.pf-item:focus-visible {
  outline: 3px solid var(--gold);
  outline-offset: 2px;
  z-index: 1;
}

/* Filter: versteckte Items */
.pf-item.pf-hidden {
  display: none;
}

/* Lightbox */
.pf-lightbox {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(0, 0, 0, 0.95);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
  cursor: zoom-out;
}

.pf-lightbox.active {
  display: flex;
}

.pf-lightbox-picture {
  display: contents;
}

.pf-lightbox img {
  max-width: 90vw;
  max-height: 88vh;
  object-fit: contain;
  border-radius: 2px;
  cursor: default;
  pointer-events: none;
}

.pf-lightbox-close {
  position: absolute;
  top: 28px;
  right: 36px;
  font-size: 1.6rem;
  color: rgba(255, 255, 255, 0.5);
  background: none;
  border: none;
  cursor: pointer;
  font-weight: 300;
  transition: color 0.3s;
  z-index: 10000;
  /* Touch-Target */
  padding: 12px;
  min-width: 44px;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.pf-lightbox-close:hover {
  color: var(--warm-white);
}

.pf-lightbox-close:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
  color: var(--warm-white);
}

.pf-lightbox-info {
  position: absolute;
  bottom: 32px;
  left: 40px;
  pointer-events: none;
}

.pf-lightbox-cat {
  font-family: var(--font-body);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 4px;
}

.pf-lightbox-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
  font-style: italic;
  color: rgba(255, 255, 255, 0.8);
}

.pf-lightbox-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  font-size: 2.2rem;
  color: rgba(255, 255, 255, 0.4);
  background: none;
  border: none;
  cursor: pointer;
  padding: 16px;
  transition: color 0.3s;
  z-index: 10000;
  min-width: 44px;
  min-height: 44px;
}

.pf-lightbox-nav:hover {
  color: var(--warm-white);
}

.pf-lightbox-nav:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 4px;
  color: var(--warm-white);
}

.pf-lightbox-prev { left: 16px; }
.pf-lightbox-next { right: 16px; }

/* Stats-Bar */
.pf-stats {
  background: var(--black);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.pf-stat {
  padding: clamp(32px, 4vw, 48px) clamp(24px, 3vw, 40px);
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  text-align: center;
}

.pf-stat:last-child {
  border-right: none;
}

.pf-stat-num {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  font-weight: 300;
  color: var(--warm-white);
  line-height: 1;
  margin-bottom: 6px;
}

.pf-stat-num em {
  color: var(--gold);
  font-style: normal;
}

.pf-stat-label {
  font-family: var(--font-body);
  font-size: 0.6rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.35);
}

/* Portfolio-Uebersicht: Leer-Hinweis */
.portfolio-empty-note {
  padding: 64px;
  color: rgba(255, 255, 255, 0.4);
  text-align: center;
  column-span: all;
}

/* Portfolio-Uebersicht: CTA-Sektion */
.pf-cta {
  background: var(--warm-white);
  padding: clamp(64px, 8vw, 100px) var(--container-pad);
  text-align: center;
}

.pf-cta__eyebrow {
  font-family: var(--font-body);
  font-size: var(--text-caption);
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 1rem;
}

.pf-cta__heading {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 3rem);
  font-weight: 400;
  color: var(--black);
  margin-bottom: 2rem;
}

/* Portfolio-Kategorie: Breadcrumb-Navigation */
.pk-breadcrumb {
  background: var(--black);
  padding: 20px var(--container-pad) 0;
}

.pk-breadcrumb__list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: var(--text-caption);
  font-weight: 400;
}

.pk-breadcrumb__link {
  color: rgba(250, 249, 246, 0.55);
  text-decoration: none;
}

.pk-breadcrumb__separator {
  color: rgba(250, 249, 246, 0.3);
}

.pk-breadcrumb__current {
  color: var(--gold);
}

/* Portfolio-Kategorie: Header-Sektion */
.pk-header {
  background: var(--black);
  padding: clamp(32px, 5vw, 64px) var(--container-pad) clamp(40px, 6vw, 72px);
}

.pk-header__inner {
  max-width: 860px;
}

.pk-header__title {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 4.5rem);
  font-weight: 400;
  color: var(--warm-white);
  line-height: 1.1;
  margin: 0.75rem 0 1.25rem;
}

.pk-header__desc {
  font-family: var(--font-body);
  font-size: var(--text-body);
  font-weight: 300;
  color: rgba(250, 249, 246, 0.6);
  max-width: 620px;
  line-height: 1.8;
  margin: 0;
}

/* Portfolio-Kategorie: Filter */
.pk-filter {
  background: var(--black);
  padding: 0 var(--container-pad) 32px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* Portfolio-Kategorie: Foto-Grid */
.pk-grid-section {
  background: var(--black);
  padding: 0 var(--container-pad) clamp(64px, 8vw, 120px);
}

.pk-empty-note {
  font-family: var(--font-body);
  color: rgba(250, 249, 246, 0.5);
  text-align: center;
  padding: 80px 0;
}

.pk-masonry {
  columns: 3;
  column-gap: 12px;
}

.pk-foto {
  break-inside: avoid;
  margin: 0 0 12px 0;
  padding: 0;
  overflow: hidden;
  background: var(--light-gray);
}

.pk-foto__img {
  display: block;
  width: 100%;
  height: auto;
}

/* Portfolio-Kategorie: CTA-Sektion */
.pk-cta {
  background: var(--warm-white);
  padding: clamp(64px, 8vw, 100px) var(--container-pad);
  text-align: center;
}

.pk-cta__btn--gap {
  margin-right: 16px;
}

/* Responsive Portfolio-Seite */
@media (max-width: 1024px) {
  .pf-grid { column-count: 2; }
}

@media (max-width: 900px) {
  .pf-hero {
    flex-direction: column;
    align-items: flex-start;
  }

  .pf-stats {
    grid-template-columns: 1fr 1fr;
  }

  .pf-stat {
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }
}

@media (max-width: 600px) {
  .pf-grid { column-count: 1; }

  .pf-stats {
    grid-template-columns: 1fr;
  }

  .pf-stat {
    border-right: none;
  }

  .pf-lightbox-info {
    left: 16px;
    bottom: 16px;
  }

  .pf-lightbox-nav {
    font-size: 1.8rem;
  }

  .pf-lightbox-prev { left: 4px; }
  .pf-lightbox-next { right: 4px; }
}

/* prefers-reduced-motion: Uebergaenge deaktivieren */
@media (prefers-reduced-motion: reduce) {
  .pf-item img,
  .pf-item-overlay,
  .pf-lightbox-close,
  .pf-lightbox-nav {
    transition: none !important;
  }
}