/* Base styles */
body {
  background-color: #f3f4f6;
  font-family: 'Lato', sans-serif;
}

/* Project grid improvements */
#projectGrid {
  transition: opacity 0.5s ease-in-out;
  opacity: 0;
}

#projectGrid[style*="opacity: 1"] {
  opacity: 1;
}

/* Loading state */
.loading-skeleton {
  background: linear-gradient(
    90deg,
    #f3f4f6 0%,
    #e5e7eb 50%,
    #f3f4f6 100%
  );
  background-size: 200% 100%;
  animation: loading 1.5s infinite;
  border-radius: 1.5rem;
}

@keyframes loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Project card redesign with hover overlay */
.project-card {
  position: relative;
  height: 500px;
  border-radius: 1.5rem;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  will-change: transform;
}

.project-card:hover {
  transform: translateY(-12px) scale(1.03);
  box-shadow: 0 35px 60px rgba(0, 0, 0, 0.3);
}

/* Project image as background */
.project-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  z-index: 1;
}

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

/* Content overlay */
.project-content {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(0, 0, 0, 0.4) 30%,
    rgba(0, 0, 0, 0.8) 70%,
    rgba(0, 0, 0, 0.95) 100%
  );
  color: white;
  transform: translateY(60%);
  transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  z-index: 2;
  backdrop-filter: blur(2px);
}

.project-card:hover .project-content {
  transform: translateY(0);
  background: linear-gradient(
    180deg,
    rgba(0, 0, 0, 0.1) 0%,
    rgba(0, 0, 0, 0.6) 20%,
    rgba(0, 0, 0, 0.85) 60%,
    rgba(0, 0, 0, 0.98) 100%
  );
  backdrop-filter: blur(8px);
}

/* Project title */
.project-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: white;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.1s;
}

.project-card:hover .project-title {
  opacity: 1;
  transform: translateY(0);
}

/* Project description */
.project-description {
  font-size: 1rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  color: rgba(255, 255, 255, 0.9);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.2s;
}

.project-card:hover .project-description {
  opacity: 1;
  transform: translateY(0);
}

/* Project buttons */
.project-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
}

.project-card:hover .project-buttons {
  opacity: 1;
  transform: translateY(0);
}

/* Button styles */
.btn {
  padding: 0.75rem 1.5rem;
  border-radius: 2rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  display: inline-block;
  font-size: 0.9rem;
  position: relative;
  overflow: hidden;
}

.btn-outline {
  border: 2px solid rgba(255, 255, 255, 0.8);
  color: white;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.2);
  border-color: white;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(255, 255, 255, 0.2);
}

.btn-solid {
  background: linear-gradient( #7a7a7b 0%, #403d40 100%);
  color: white;
  border: 2px solid transparent;
}

.btn-solid:hover {
  background: linear-gradient( #403f3f 0%, #2e2a2e 100%);
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(118, 75, 162, 0.4);
}

/* Initial state - show only a subtle title overlay */
.project-title-preview {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem 2rem;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(0, 0, 0, 0.7) 100%
  );
  color: white;
  z-index: 2;
  transition: all 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.project-card:hover .project-title-preview {
  opacity: 0;
  transform: translateY(100%);
}

.project-title-preview h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin: 0;
  text-align: center;
}

/* Page transition animations */
.project-card.fade-out {
  opacity: 0;
  transform: translateY(-20px) scale(0.95);
}

.project-card.fade-in {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* Dot Pagination Styles */
#dotPagination {
  margin: 2rem 0 0 0;
}

.dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.2);
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  position: relative;
  border: 2px solid transparent;
}

.dot:hover {
  background: rgba(0, 0, 0, 0.4);
  transform: scale(1.2);
}

.dot.active {
  background: #1f2937;
  transform: scale(1.3);
  box-shadow: 0 0 0 3px rgba(31, 41, 55, 0.2);
}

.dot.active::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 6px;
  height: 6px;
  background: white;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
  50% {
    opacity: 0.7;
    transform: translate(-50%, -50%) scale(1.2);
  }
}

/* Mobile optimizations based on About.html structure */
@media (max-width: 768px) {
  .main-container {
    padding: 2rem 1rem !important;
  }
  
  .section-header {
    margin-bottom: 3rem !important;
  }
  
  .cards-container {
    gap: 1.5rem !important;
  }
  
  .pagination-container {
    margin-top: 2rem !important;
  }
  
  #projectGrid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .project-card {
    height: 400px;
  }
  
  .project-content {
    padding: 1.5rem;
    transform: translateY(40%);
  }
  
  .project-title {
    font-size: 1.5rem;
  }
  
  .project-description {
    font-size: 0.9rem;
  }
  
  .btn {
    padding: 0.6rem 1.2rem;
    font-size: 0.85rem;
  }

  .dot {
    width: 14px;
    height: 14px;
  }
  
  .dot.active::after {
    width: 4px;
    height: 4px;
  }
}

@media (max-width: 480px) {
  .main-container {
    padding: 1.5rem 1rem !important;
  }
  
  .section-header {
    margin-bottom: 2rem !important;
  }
  
  .section-header h1 {
    font-size: 2.5rem !important;
  }
  
  .section-header p {
    font-size: 0.75rem !important;
    margin-bottom: 0.5rem !important;
  }
  
  .cards-container {
    gap: 1rem !important;
  }
  
  .pagination-container {
    margin-top: 1.5rem !important;
  }
  
  .project-card {
    height: 350px;
    border-radius: 1rem !important;
  }
  
  .project-content {
    padding: 1.25rem;
    transform: translateY(30%);
  }
  
  .project-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
  }
  
  .project-description {
    font-size: 0.8rem;
    margin-bottom: 1rem;
  }
  
  .project-buttons {
    gap: 0.75rem;
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
    width: 100%;
    max-width: 200px;
    text-align: center;
  }
  
  .project-title-preview {
    padding: 1rem 1.5rem;
  }
  
  .project-title-preview h2 {
    font-size: 1.25rem;
  }
  
  .dot {
    width: 12px;
    height: 12px;
  }
  
  .dot.active::after {
    width: 3px;
    height: 3px;
  }
}

/* Landscape phone optimizations */
@media (max-width: 896px) and (orientation: landscape) and (max-height: 500px) {
  .main-container {
    padding: 1rem !important;
  }
  
  .section-header {
    margin-bottom: 1.5rem !important;
  }
  
  .section-header h1 {
    font-size: 2rem !important;
  }
  
  .section-header p {
    font-size: 0.75rem !important;
    margin-bottom: 0.25rem !important;
  }
  
  .cards-container {
    gap: 0.75rem !important;
  }
  
  .pagination-container {
    margin-top: 1rem !important;
  }
  
  .project-card {
    height: 300px;
  }
  
  .project-content {
    padding: 1rem;
  }
  
  .project-title {
    font-size: 1rem;
    margin-bottom: 0.5rem;
  }
  
  .project-description {
    font-size: 0.75rem;
    margin-bottom: 0.75rem;
  }
  
  .btn {
    padding: 0.4rem 0.8rem;
    font-size: 0.75rem;
  }
}

/* Tablet optimizations */
@media (min-width: 769px) and (max-width: 1024px) {
  .main-container {
    padding: 3rem 2rem !important;
  }
  
  .section-header {
    margin-bottom: 4rem !important;
  }
  
  .cards-container {
    gap: 2rem !important;
  }
  
  .pagination-container {
    margin-top: 3rem !important;
  }
  
  .project-card {
    height: 450px;
  }
}

/* Performance optimizations */
.project-card,
.loading-skeleton,
.btn,
.project-image,
.dot {
  contain: layout style paint;
}

/* Focus states for accessibility */
.btn:focus,
.project-card:focus,
.dot:focus {
  outline: 2px solid #3b82f6;
  outline-offset: 2px;
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .project-card,
  .btn,
  .project-image,
  .dot,
  .project-content,
  .project-title,
  .project-description,
  .project-buttons {
    transition: none;
    animation: none;
  }
  
  .loading-skeleton {
    animation: none;
  }
  
  .dot.active::after {
    animation: none;
  }
}

/* Intersection observer animations */
.project-card.in-view {
  animation: slideInUp 0.6s ease-out forwards;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}