/* =============================================================================
   ERGOTHERAPIEPRAXIS LEA FREIBOTT — Galerie (galerie.css)
   ============================================================================= */

/* =============================================================================
   1. SCROLL ANIMATIONS
   ============================================================================= */
.fade-up {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.70s cubic-bezier(0.16, 1, 0.3, 1), transform 0.70s cubic-bezier(0.16, 1, 0.3, 1);
}
.fade-up.is-visible { opacity: 1; transform: translateY(0); }
.anim-d1 { transition-delay:  80ms; }
.anim-d2 { transition-delay: 160ms; }

/* =============================================================================
   2. GALERIE HERO & FILTERS
   ============================================================================= */
.galerie-hero {
  background: var(--color-surface-alt);
  padding-block: var(--space-16) var(--space-12);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.galerie-hero::before {
  content: '';
  position: absolute;
  top: -120px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 400px;
  background: radial-gradient(circle, rgba(253, 184, 125, 0.12) 0%, rgba(244, 165, 174, 0.08) 50%, transparent 70%);
  border-radius: var(--radius-full);
  pointer-events: none;
}

.galerie-hero .container {
  position: relative;
  z-index: 1;
}

.galerie-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.galerie-hero h1 em {
  font-style: italic;
  color: var(--color-primary-dark);
}

.galerie-hero-sub {
  font-size: var(--text-md);
  color: var(--color-text-secondary);
  line-height: var(--lh-relaxed);
  max-width: 60ch;
  margin-inline: auto;
  margin-bottom: var(--space-10);
}

/* ── Filters ── */
.galerie-filters {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-8);
}

.filter-btn {
  background: #ffffff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-5);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  background: var(--color-surface-alt);
  color: var(--color-text);
}

.filter-btn.is-active {
  background: var(--color-text);
  color: #ffffff;
  border-color: var(--color-text);
}

/* =============================================================================
   3. MASONRY GRID
   ============================================================================= */
.galerie-section {
  background: var(--color-bg);
  padding-block: var(--space-12) var(--space-20);
  min-height: 50vh;
}

.galerie-grid {
  /* Using CSS columns for a masonry effect */
  column-count: 3;
  column-gap: var(--space-6);
  width: 100%;
}

/* 
 * CRITICAL DESIGN RULE:
 * Every single image placeholder MUST be strictly pure white #ffffff.
 */
.galerie-item {
  break-inside: avoid;
  margin-bottom: var(--space-6);
  background: #ffffff; /* STRICT: pure white */
  border-radius: var(--radius-2xl);
  border: 1px solid var(--color-border-light);
  box-shadow: 0 4px 16px rgba(45, 45, 45, 0.05);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition-base), box-shadow var(--transition-base), opacity 0.4s ease, filter 0.4s ease;
}

.galerie-item:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 0 12px 32px rgba(45, 45, 45, 0.08);
  z-index: 2;
}

.galerie-item svg {
  width: 48px;
  height: 48px;
  color: var(--color-border);
  opacity: 0.5;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.galerie-item:hover svg {
  transform: scale(1.1);
  opacity: 0.8;
  color: var(--color-primary-dark);
}

/* Filtering classes */
.galerie-item.is-hidden {
  opacity: 0;
  transform: scale(0.9);
  pointer-events: none;
  /* Instead of display:none (which breaks CSS masonry transitions badly), 
     we use a max-height hack or absolute positioning to collapse it.
     For CSS columns, display:none is best despite lack of height transition. */
  display: none;
}

/* Simulating different image aspect ratios */
.aspect-square { aspect-ratio: 1 / 1; }
.aspect-portrait { aspect-ratio: 3 / 4; }
.aspect-landscape { aspect-ratio: 4 / 3; }
.aspect-video { aspect-ratio: 16 / 9; }

/* Optional label overlay on hover */
.galerie-item-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(255,255,255,1), rgba(255,255,255,0));
  padding: var(--space-8) var(--space-4) var(--space-4);
  font-size: var(--text-xs);
  font-weight: var(--fw-semi);
  color: var(--color-text);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
  opacity: 0;
  transform: translateY(10px);
  transition: opacity var(--transition-base), transform var(--transition-base);
  text-align: center;
}

.galerie-item:hover .galerie-item-label {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================================================
   4. RESPONSIVE BREAKPOINTS
   ============================================================================= */
@media (max-width: 900px) {
  .galerie-grid {
    column-count: 2;
  }
}

@media (max-width: 640px) {
  .galerie-grid {
    column-count: 1;
  }
}