/* Enhanced Projects and Certificates Styles */

/* Section Header with Filters */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2.5rem;
  flex-wrap: wrap;
  gap: 1.5rem;
}

/* Filter buttons */
.section-filters {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.filter-btn {
  background-color: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem 1rem;
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
}

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

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

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

/* Project Card - Modern Style */
.project-card {
  position: relative;
  height: 250px;
  perspective: 1000px;
  cursor: pointer;
  border-radius: 12px;
  overflow: hidden;
}

.project-card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.8s;
  transform-style: preserve-3d;
}

.project-card:hover .project-card-inner {
  transform: rotateY(180deg);
}

.project-card-front, .project-card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  border-radius: 12px;
  overflow: hidden;
}

.project-card-front {
  background-color: var(--surface-color);
}

.project-card-back {
  background: linear-gradient(145deg, var(--surface-color), var(--background-color));
  transform: rotateY(180deg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.5rem;
  box-shadow: 0 10px 30px -15px var(--shadow-color);
}

/* Project Image */
.project-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.5s ease;
}

/* Overlay for Project Cards */
.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, rgba(0, 0, 0, 0) 60%);
  opacity: 0;
  transition: opacity 0.3s ease;
  display: flex;
  align-items: flex-end;
  padding: 1.5rem;
}

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

.project-overlay-content {
  width: 100%;
}

.project-overlay-content h3 {
  color: white;
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

/* Project Actions */
.project-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.25rem;
  justify-content: flex-end;
}

.project-link, .project-info-toggle {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.2);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  text-decoration: none;
  border: none;
  cursor: pointer;
}

.project-link:hover, .project-info-toggle:hover {
  background-color: var(--primary-color);
  transform: translateY(-3px);
}

/* Project Content - Back Side */
.project-content {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-content h3 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
  color: var(--text-primary);
}

.project-content p {
  margin-bottom: 1rem;
  font-size: 0.9rem;
  flex-grow: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.project-tag {
  background-color: rgba(var(--primary-color-rgb), 0.1);
  color: var(--primary-color);
  font-size: 0.7rem;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-weight: 600;
}

.project-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  font-size: 0.9rem;
  border-radius: 6px;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  color: white;
  text-decoration: none;
  transition: all 0.3s ease;
}

.project-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(var(--primary-color-rgb), 0.4);
}

/* Certificates Grid */
.certificates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
  perspective: 1000px; /* For 3D hover effects */
  padding: 0.5rem 0 1.5rem;
}

/* Certificate Card - Enhanced Modern Style */
.certificate-card {
  background-color: var(--surface-color);
  border-radius: 14px;
  overflow: hidden;
  padding: 1.75rem;
  position: relative;
  transition: all 0.4s cubic-bezier(0.165, 0.84, 0.44, 1);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
  height: 100%;
  display: flex;
  flex-direction: column;
  border-left: 3px solid var(--primary-color);
  border-top: none;
  backdrop-filter: blur(5px);
  background-image: 
    linear-gradient(135deg, rgba(var(--primary-color-rgb), 0.05) 0%, transparent 100%),
    radial-gradient(circle at top right, rgba(var(--accent-color-rgb), 0.05), transparent 70%);
  z-index: 1;
}

.certificate-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, 
    rgba(var(--primary-color-rgb), 0.03) 0%, 
    rgba(var(--accent-color-rgb), 0.03) 100%);
  opacity: 0;
  z-index: -1;
  transition: opacity 0.4s ease;
}

.certificate-card:hover {
  transform: translateY(-8px) scale(1.01);
  box-shadow: 0 15px 30px rgba(var(--primary-color-rgb), 0.15);
  border-left: 5px solid var(--primary-color);
}

.certificate-card:hover::before {
  opacity: 1;
}

/* Certificate Badge - Enhanced */
.certificate-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  box-shadow: 0 3px 10px rgba(var(--primary-color-rgb), 0.3);
  z-index: 1;
  transition: all 0.3s ease;
}

.certificate-card:hover .certificate-badge {
  transform: scale(1.1) rotate(15deg);
  box-shadow: 0 5px 15px rgba(var(--primary-color-rgb), 0.4);
}

/* Certificate Logo - Enhanced */
.certificate-logo {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(var(--primary-color-rgb), 0.2) 0%, rgba(var(--primary-color-rgb), 0.1) 100%);
  color: var(--primary-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.certificate-card:hover .certificate-logo {
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(var(--primary-color-rgb), 0.2);
}

/* Certificate Content - Enhanced */
.certificate-content {
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  position: relative;
  z-index: 1;
}

.certificate-content h3 {
  margin-top: 0;
  margin-bottom: 0.75rem;
  font-size: 1.1rem;
  color: var(--text-primary);
  line-height: 1.4;
  font-weight: 600;
  position: relative;
  display: inline-block;
  padding-bottom: 0.5rem;
}

.certificate-content h3::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background: linear-gradient(to right, var(--primary-color), transparent);
  border-radius: 1px;
  transition: width 0.3s ease;
}

.certificate-card:hover .certificate-content h3::after {
  width: 100%;
}

.certificate-info {
  display: flex;
  justify-content: space-between;
  margin-bottom: 1rem;
  font-size: 0.85rem;
  padding: 0.5rem 0;
  border-bottom: 1px dashed rgba(var(--primary-color-rgb), 0.2);
}

.certificate-issuer {
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.certificate-issuer::before {
  content: "•";
  color: var(--primary-color);
  font-size: 1.2em;
}

.certificate-date {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  background: rgba(var(--accent-color-rgb), 0.1);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.certificate-date::before {
  content: "\f133";  /* calendar icon from Font Awesome */
  font-family: "Font Awesome 5 Free";
  font-weight: 900;
  font-size: 0.7rem;
  color: var(--primary-color);
}

.certificate-description {
  font-size: 0.9rem;
  color: var(--text-tertiary);
  line-height: 1.5;
  margin-bottom: 1rem;
  position: relative;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  text-overflow: ellipsis;
  transition: all 0.3s ease;
}

.certificate-date {
  color: var(--text-secondary);
}

.certificate-card .certificate-tags {
  margin-top: auto;
  margin-bottom: 1.25rem;
}

.certificate-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  color: var(--primary-color);
  background: linear-gradient(135deg, rgba(var(--primary-color-rgb), 0.1) 0%, rgba(var(--accent-color-rgb), 0.1) 100%);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  transition: all 0.3s ease;
  margin-top: 1.25rem;
  padding: 0.7rem 1.2rem;
  border-radius: 8px;
  width: 100%;
  border: 1px solid rgba(var(--primary-color-rgb), 0.2);
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.certificate-link::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
  opacity: 0;
  z-index: -1;
  transition: opacity 0.3s ease;
}

.certificate-link::after {
  content: "\f35d"; /* external link icon */
  font-family: "Font Awesome 5 Free";
  font-weight: 900;
  font-size: 0.8rem;
  opacity: 0;
  transform: translateX(-5px);
  transition: all 0.3s ease;
}

.certificate-link:hover::after {
  opacity: 1;
  transform: translateX(3px);
}

.certificate-link:hover::before {
  opacity: 1;
}

.certificate-link:hover {
  color: white;
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(var(--primary-color-rgb), 0.3);
  border-color: transparent;
}

/* Dark Mode Styles */
.dark-mode .project-card-back {
  background: linear-gradient(145deg, var(--surface-color), rgba(30, 41, 59, 0.8));
}

.dark-mode .filter-btn {
  border-color: #334155;
}

.dark-mode .certificate-logo {
  background-color: rgba(79, 148, 255, 0.15);
}

.dark-mode .project-tag {
  background-color: rgba(79, 148, 255, 0.15);
}

/* Responsive Styles */
@media (max-width: 991px) {
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  
  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }
  
  .certificates-grid {
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  }
}

@media (max-width: 767px) {
  .project-card {
    height: 220px;
  }
  
  .projects-grid,
  .certificates-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1rem;
  }
  
  .certificate-content h3 {
    font-size: 1rem;
  }
  
  .certificate-card {
    padding: 1.25rem;
  }
  
  .certificate-logo {
    width: 40px;
    height: 40px;
    font-size: 1.25rem;
  }
}

@media (max-width: 575px) {
  .projects-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .certificates-grid {
    grid-template-columns: 1fr 1fr;
  }
  
  .project-card {
    height: 180px;
  }
  
  .certificate-badge {
    top: 0.75rem;
    right: 0.75rem;
    width: 24px;
    height: 24px;
    font-size: 0.7rem;
  }
  
  .certificate-info {
    flex-direction: column;
    gap: 0.25rem;
  }
  
  .certificate-tags {
    display: none;
  }
}

@media (max-width: 399px) {
  .projects-grid,
  .certificates-grid {
    grid-template-columns: 1fr;
  }
  
  .project-card {
    height: 200px;
  }
}

/* Animation for project cards */
@keyframes fadeInUp {
  0% {
    opacity: 0;
    transform: translateY(30px);
    filter: blur(5px);
  }
  60% {
    filter: blur(0);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0);
  }
}

.project-card,
.certificate-card {
  animation: fadeInUp 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) forwards;
  opacity: 0;
  will-change: transform, opacity, filter;
}

.project-card:nth-child(1),
.certificate-card:nth-child(1) {
  animation-delay: 0.1s;
}

.project-card:nth-child(2),
.certificate-card:nth-child(2) {
  animation-delay: 0.2s;
}

.project-card:nth-child(3),
.certificate-card:nth-child(3) {
  animation-delay: 0.3s;
}

.project-card:nth-child(4),
.certificate-card:nth-child(4) {
  animation-delay: 0.4s;
}

.project-card:nth-child(5),
.certificate-card:nth-child(5) {
  animation-delay: 0.5s;
}

.project-card:nth-child(6),
.certificate-card:nth-child(6) {
  animation-delay: 0.6s;
}