/* ==========================================================================
   Krishiv Solutions - Portfolio Page Specific Styles (portfolio.css)
   ========================================================================== */

/* Page Header */
.page-header {
  position: relative;
  padding: calc(var(--header-height) + 6rem) 0 6rem;
  background-color: var(--dark-bg);
  color: var(--white);
  text-align: center;
  overflow: hidden;
}

.page-header-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
}

.page-title {
  font-size: 3.5rem;
  letter-spacing: -1px;
  margin-bottom: 1.5rem;
  color: var(--white);
}

.page-desc {
  font-size: 1.125rem;
  color: var(--gray-light);
  line-height: 1.8;
}

.header-pattern {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, transparent 0%, var(--dark-bg) 80%),
              linear-gradient(45deg, rgba(255,255,255,0.03) 25%, transparent 25%, transparent 75%, rgba(255,255,255,0.03) 75%, rgba(255,255,255,0.03)),
              linear-gradient(45deg, rgba(255,255,255,0.03) 25%, transparent 25%, transparent 75%, rgba(255,255,255,0.03) 75%, rgba(255,255,255,0.03));
  background-size: 100% 100%, 20px 20px, 20px 20px;
  background-position: 0 0, 0 0, 10px 10px;
  z-index: 1;
}

/* Portfolio Filters */
.portfolio-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 4rem;
}

.filter-btn {
  background: var(--light-bg);
  border: 1px solid var(--light-border);
  color: var(--gray-dark);
  padding: 0.75rem 1.5rem;
  border-radius: 30px;
  font-weight: 500;
  font-family: var(--font-body);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.filter-btn:hover {
  background: var(--white);
  border-color: var(--primary-orange);
  color: var(--primary-orange);
}

.filter-btn.active {
  background: var(--primary-orange);
  color: var(--white);
  border-color: var(--primary-orange);
  box-shadow: 0 4px 14px var(--primary-orange-glow);
}

/* Portfolio Grid */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
}

.portfolio-item {
  background: var(--white);
  border: 1px solid var(--light-border);
  border-radius: 24px;
  overflow: hidden;
  transition: var(--transition-smooth);
}

.portfolio-item:hover {
  box-shadow: var(--shadow-premium);
  border-color: transparent;
  transform: translateY(-5px);
}

.portfolio-image {
  height: 300px;
  background: var(--light-bg);
  position: relative;
  overflow: hidden;
}

.img-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  color: var(--gray-muted);
  font-weight: 600;
  background: linear-gradient(135deg, #f0f4f8 0%, #e2e8f0 100%);
  transition: transform 0.5s ease;
}

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

.portfolio-content {
  padding: 2.5rem;
}

.category-badge {
  display: inline-block;
  background: rgba(255, 107, 0, 0.1);
  color: var(--primary-orange);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 0.5rem 1rem;
  border-radius: 30px;
  margin-bottom: 1rem;
}

.portfolio-content h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.portfolio-content p {
  color: var(--gray-dark);
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.case-study-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--dark-bg);
  font-weight: 600;
  text-decoration: none;
  font-size: 0.9375rem;
  transition: var(--transition-smooth);
}

.case-study-link span {
  color: var(--primary-orange);
  transition: transform 0.3s ease;
}

.case-study-link:hover {
  color: var(--primary-orange);
}

.case-study-link:hover span {
  transform: translateX(5px);
}

/* Animations */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }

@keyframes fadeInUp {
  to { opacity: 1; transform: translateY(0); }
}

.scroll-reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 992px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .page-title {
    font-size: 2.5rem;
  }
  .portfolio-filters {
    gap: 0.5rem;
  }
  .filter-btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
  }
}