/* ===================================
   Portfolio Page - World-Class Design
   =================================== */

/* Portfolio Hero Section */
.portfolio-hero-section {
  padding: 120px 0 80px;
  background: var(--primary-gradient);
  color: white;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.portfolio-badge {
  display: inline-block;
  background: rgba(255, 255, 255, 0.2);
  color: white;
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 14px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 24px;
}

.portfolio-hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  margin-bottom: 24px;
  line-height: 1.2;
  color: white !important;
}

.portfolio-hero-title .text-gradient {
  background: linear-gradient(135deg, #ffffff 0%, #f0f0f0 100%) !important;
  -webkit-background-clip: text !important;
  -webkit-text-fill-color: transparent !important;
  background-clip: text !important;
}

.portfolio-hero-description {
  font-size: 1.2rem;
  line-height: 1.6;
  margin-bottom: 40px;
  color: rgba(255, 255, 255, 0.95) !important;
}

.portfolio-hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.stat-item {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  color: white;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.8;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Portfolio Hero Visual */
.portfolio-hero-visual {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 500px;
}

.portfolio-preview-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 400px;
  transform: perspective(1000px) rotateY(-15deg);
}

.preview-item {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 16px;
  padding: 20px;
  transition: all var(--transition-duration) var(--transition-timing);
  backdrop-filter: blur(10px);
  overflow: hidden;
}

.preview-item:hover {
  transform: translateY(-10px) scale(1.05);
  background: rgba(255, 255, 255, 0.2);
}

.preview-item img {
  width: 100%;
  height: 120px;
  object-fit: cover;
  border-radius: 12px;
  transition: all var(--transition-duration) var(--transition-timing);
}

.preview-item:hover img {
  transform: scale(1.1);
}

/* Staggered Animation */
.preview-1 { animation-delay: 0.1s; }
.preview-2 { animation-delay: 0.2s; }
.preview-3 { animation-delay: 0.3s; }
.preview-4 { animation-delay: 0.4s; }

/* Portfolio Filter Section */
.portfolio-filter-section {
  padding: 100px 0;
}

/* Filter Tabs */
.portfolio-filter-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

.filter-tab {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 12px 24px;
  border-radius: 50px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-duration) var(--transition-timing);
  font-size: 0.95rem;
}

.filter-tab:hover,
.filter-tab.active {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

/* Portfolio Grid */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 30px;
  justify-content: center;
}

.portfolio-card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  overflow: hidden;
  transition: all var(--transition-duration) var(--transition-timing);
  height: 100%;
  display: flex;
  flex-direction: column;
  max-width: 420px;
  width: 100%;
  margin: 0 auto;
}

.portfolio-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 60px rgba(46, 43, 226, 0.15);
  border-color: var(--primary-color);
}

.portfolio-image {
  position: relative;
  height: 250px;
  overflow: hidden;
}

.portfolio-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all var(--transition-duration) var(--transition-timing);
}

.portfolio-card:hover .portfolio-image img {
  transform: scale(1.1);
}

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(46, 43, 226, 0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all var(--transition-duration) var(--transition-timing);
}

.portfolio-card:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-actions {
  display: flex;
  gap: 12px;
}

.portfolio-btn {
  background: white;
  color: var(--primary-color);
  border: none;
  padding: 12px 20px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all var(--transition-duration) var(--transition-timing);
  cursor: pointer;
}

.portfolio-btn:hover {
  color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

.portfolio-content {
  padding: 30px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.portfolio-category {
  color: var(--primary-color);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
}

.portfolio-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  line-height: 1.3;
}

.portfolio-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
  flex: 1;
  font-size: 0.95rem;
}

.portfolio-tech-stack {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: auto;
}

.tech-tag {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid var(--border-color);
}

/* Portfolio CTA Section */
.portfolio-cta-section {
  padding: 100px 0;
}

.portfolio-cta-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: white;
  margin-bottom: 20px;
}

.portfolio-cta-description {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.6;
  margin-bottom: 40px;
}

.portfolio-cta-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn-portfolio-primary,
.btn-portfolio-secondary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 16px 32px;
  border-radius: 50px;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition-duration) var(--transition-timing);
}

.btn-portfolio-primary {
  background: white;
  color: var(--primary-color);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-portfolio-primary:hover {
  color: var(--primary-color);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
}

.btn-portfolio-secondary {
  background: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-portfolio-secondary:hover {
  color: white;
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
  transform: translateY(-3px);
}

/* Portfolio Modal */
.modal-content {
  border-radius: 20px;
  border: none;
  overflow: hidden;
}

.modal-header {
  background: var(--primary-gradient);
  color: white;
  border: none;
  padding: 24px 30px;
}

.modal-title {
  font-weight: 700;
  font-size: 1.3rem;
}

.btn-close {
  filter: brightness(0) invert(1);
  opacity: 0.8;
}

.btn-close:hover {
  opacity: 1;
}

.modal-body {
  padding: 30px;
}

.project-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 24px;
}

.features-title,
.tech-title {
  color: var(--text-primary);
  font-weight: 700;
  margin-bottom: 12px;
  font-size: 1.1rem;
}

.features-list {
  list-style: none;
  padding: 0;
  margin-bottom: 24px;
}

.features-list li {
  color: var(--text-secondary);
  margin-bottom: 8px;
  position: relative;
  padding-left: 20px;
}

.features-list li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary-color);
  font-weight: bold;
}

.tech-stack {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tech-badge {
  background: var(--primary-color);
  color: white;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* Responsive Design */
@media (max-width: 1024px) and (min-width: 769px) {
  .portfolio-grid {
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 25px;
    justify-content: center;
  }

  .portfolio-card {
    max-width: 400px;
  }
}

@media (max-width: 768px) {
  .portfolio-hero-section {
    padding: 80px 0 60px;
    text-align: center;
  }

  .portfolio-hero-stats {
    justify-content: center;
    gap: 30px;
  }

  .portfolio-preview-grid {
    grid-template-columns: 1fr;
    max-width: 250px;
    transform: none;
  }

  .portfolio-filter-tabs {
    gap: 8px;
  }

  .filter-tab {
    padding: 10px 16px;
    font-size: 0.9rem;
  }

  .portfolio-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    justify-content: center;
  }

  .portfolio-card {
    margin: 0 auto;
    max-width: 400px;
  }

  .portfolio-content {
    padding: 24px 20px;
  }

  .portfolio-cta-buttons {
    flex-direction: column;
    align-items: center;
  }

  .btn-portfolio-primary,
  .btn-portfolio-secondary {
    width: 100%;
    max-width: 280px;
    justify-content: center;
  }

  .modal-body {
    padding: 20px;
  }
}

@media (max-width: 576px) {
  .portfolio-hero-stats {
    flex-direction: column;
    gap: 20px;
  }

  .portfolio-image {
    height: 200px;
  }

  .portfolio-content {
    padding: 20px 16px;
  }

  .portfolio-actions {
    flex-direction: column;
    gap: 8px;
  }

  .portfolio-btn {
    padding: 10px 16px;
    font-size: 0.85rem;
  }

  .modal-header {
    padding: 20px;
  }

  .modal-body {
    padding: 16px;
  }
}

/* Animation Enhancements */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.portfolio-card {
  animation: fadeInUp 0.6s ease-out;
  opacity: 0;
  animation-fill-mode: forwards;
}

.portfolio-card:nth-child(1) { animation-delay: 0.1s; }
.portfolio-card:nth-child(2) { animation-delay: 0.2s; }
.portfolio-card:nth-child(3) { animation-delay: 0.3s; }
.portfolio-card:nth-child(4) { animation-delay: 0.4s; }
.portfolio-card:nth-child(5) { animation-delay: 0.5s; }
.portfolio-card:nth-child(6) { animation-delay: 0.6s; }
.portfolio-card:nth-child(7) { animation-delay: 0.7s; }
.portfolio-card:nth-child(8) { animation-delay: 0.8s; }
.portfolio-card:nth-child(9) { animation-delay: 0.9s; }
.portfolio-card:nth-child(10) { animation-delay: 1.0s; }

.preview-item {
  animation: fadeInUp 0.8s ease-out;
  opacity: 0;
  animation-fill-mode: forwards;
}

.portfolio-hero-content {
  animation: slideInLeft 1s ease-out;
}

.portfolio-hero-visual {
  animation: slideInRight 1s ease-out;
}

/* Hover Effects Enhancement */
.portfolio-card {
  position: relative;
  overflow: hidden;
}

.portfolio-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(46, 43, 226, 0.1), transparent);
  transition: left 0.6s ease;
  z-index: 1;
}

.portfolio-card:hover::before {
  left: 100%;
}

/* Loading States */
.portfolio-grid.loading .portfolio-card {
  opacity: 0.5;
  pointer-events: none;
}

.portfolio-grid.loading .portfolio-card.visible {
  opacity: 1;
  pointer-events: auto;
}

/* Filter Animation */
.portfolio-card.filtering {
  transition: all 0.3s ease;
}

.portfolio-card.filtering.hidden {
  opacity: 0;
  transform: scale(0.8);
}

/* Enhanced Modal Animations */
.modal.fade .modal-dialog {
  transform: scale(0.8) translateY(-50px);
  transition: all 0.3s ease;
}

.modal.show .modal-dialog {
  transform: scale(1) translateY(0);
}

/* Scroll Animations */
@media (prefers-reduced-motion: no-preference) {
  .portfolio-card {
    transform: translateY(20px);
    opacity: 0;
    transition: all 0.6s ease;
  }

  .portfolio-card.in-view {
    transform: translateY(0);
    opacity: 1;
  }
}