/* ==========================================================================
   Petrekivka2 — Portfolio Page Styles
   ========================================================================== */

.page-portfolio {
  background-color: var(--color-bg-primary);
}

.portfolio-hero {
  padding: var(--space-16) var(--space-6) var(--space-8);
}

.portfolio-container {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--space-6) var(--space-20);
}

/* Filters */
.scroll-hint-mobile {
  display: none;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-2);
  color: var(--color-text-secondary);
  font-size: var(--text-sm);
  margin-bottom: var(--space-3);
  font-family: var(--font-body);
}

.scroll-hint-mobile svg {
  width: 16px;
  height: 16px;
  animation: slideRight 1.5s infinite;
}

@keyframes slideRight {
  0%, 100% { transform: translateX(0); }
  50% { transform: translateX(5px); }
}

@media (max-width: 768px) {
  .scroll-hint-mobile {
    display: flex;
  }
}

/* Filters Wrapper */
.portfolio-filters-wrapper {
  margin-bottom: var(--space-10);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none; /* Firefox */
  padding-bottom: var(--space-2);
}

.portfolio-filters-wrapper::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

.portfolio-filters {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  min-width: max-content;
}

@media (max-width: 768px) {
  .portfolio-filters {
    justify-content: flex-start;
  }
}

.filter-btn {
  background: var(--color-surface-card);
  border: 1px solid rgba(0,0,0,0.05);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: var(--shadow-sm);
}

.filter-btn:hover {
  border-color: var(--color-accent-gold-light);
  color: var(--color-text-primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.06);
}

.filter-btn.is-active {
  background: var(--color-accent-red);
  color: var(--color-text-inverse);
  border-color: var(--color-accent-red);
  box-shadow: 0 4px 12px rgba(189, 42, 46, 0.3);
}

/* Perfect Grid Layout */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-8);
}

.portfolio-item {
  border-radius: var(--radius-xl);
  overflow: hidden;
  position: relative;
  display: block;
  background: var(--color-surface-muted);
  transition: opacity 0.5s ease-out, transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 4px 20px rgba(0,0,0,0.04);
  transform: translateY(0) scale(1);
  aspect-ratio: 4 / 5; /* Ensures all images are perfectly aligned in rows */
}

.portfolio-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.portfolio-item:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: 0 20px 40px rgba(0,0,0,0.12);
  z-index: 10;
}

.portfolio-item:hover img {
  transform: scale(1.05);
}

/* Modern overlay on hover to indicate it's clickable */
.portfolio-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0) 50%);
  opacity: 0;
  transition: opacity 0.6s ease;
  pointer-events: none;
}

.portfolio-item::before {
  content: '+';
  position: absolute;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 48px;
  height: 48px;
  background: rgba(255,255,255,0.9);
  color: var(--color-accent-red);
  font-size: 24px;
  font-weight: 300;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  opacity: 0;
  transform: translateY(20px) scale(0.8);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1) 0.1s;
  z-index: 2;
  pointer-events: none;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.portfolio-item:hover::after {
  opacity: 1;
}

.portfolio-item:hover::before {
  opacity: 1;
  transform: translateY(0) scale(1);
}