.filter-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.filter-tab {
  padding: 10px 24px;
  border: 2px solid var(--gray);
  background: var(--white);
  color: var(--black);
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.filter-tab:hover {
  border-color: var(--orange);
  color: var(--orange);
}

.filter-tab.active {
  background: var(--orange);
  border-color: var(--orange);
  color: var(--white);
}

.project-tag {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 4px 12px;
  border-radius: var(--radius-pill);
  width: fit-content;
}

.tag-python {
  background: rgba(48, 105, 152, 0.12);
  color: #306998;
}

.tag-web {
  background: rgba(255, 140, 66, 0.12);
  color: #e07a35;
}

.tag-java {
  background: rgba(0, 115, 150, 0.12);
  color: #007396;
}

.tag-test {
  background: rgba(108, 92, 231, 0.12);
  color: #6c5ce7;
}

.project-detail-card {
  opacity: 1;
  transform: scale(1);
  transition: opacity 0.35s ease, transform 0.35s ease;
}

.project-detail-card.hidden {
  display: none;
}

.project-detail-card.fade-out {
  opacity: 0;
  transform: scale(0.95);
}

.project-detail-card.fade-in {
  animation: cardFadeIn 0.35s ease forwards;
}

@keyframes cardFadeIn {
  from {
    opacity: 0;
    transform: scale(0.95) translateY(10px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

.category-page {
  padding: 120px 24px 80px;
  min-height: 100vh;
  background: var(--light);
}

.category-title {
  font-size: 2.8rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 24px;
}

.projects-grid-category {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.project-detail-card .project-detail-image {
  height: 100px;
}

.project-detail-info p {
  display: block;
  -webkit-line-clamp: unset;
}

.project-detail-info {
  padding: 16px;
  gap: 8px;
}

.project-detail-info h3 {
  font-size: 1rem;
  font-weight: 700;
}

.project-detail-info p {
  font-size: 0.85rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-detail-card {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  box-sizing: border-box;
}

.project-detail-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-hover);
}

.project-detail-image {
  width: 100%;
  height: 220px;
}

.gradient-python,
.gradient-python-2,
.gradient-python-3,
.project-detail-image {
  background-image: url('../python.jfif') !important;
  background-size: cover !important;
  background-position: center !important;
}

.gradient-web,
.gradient-web-2,
.gradient-web-3 {
  background-image: url('../webdev.jfif') !important;
  background-size: cover !important;
  background-position: center !important;
}

.gradient-java,
.gradient-java-2,
.gradient-java-3 {
  background-image: url('../java.jfif') !important;
  background-size: cover !important;
  background-position: center !important;
}

.gradient-test,
.gradient-test-2,
.gradient-test-3 {
  background-image: url('../testprojects.jfif') !important;
  background-size: cover !important;
  background-position: center !important;
}

.project-detail-info {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.project-detail-info h3 {
  font-size: 1.2rem;
  font-weight: 700;
}

.project-detail-info p {
  font-size: 0.9rem;
  color: #666;
  line-height: 1.6;
}

.btn-github,
.btn-live {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  transition: var(--transition);
  width: fit-content;
}

.btn-github {
  background: var(--black);
  color: var(--white);
}

.btn-github:hover {
  background: #333;
  transform: translateY(-2px);
}

.btn-live {
  background: var(--orange);
  color: var(--white);
}

.btn-live:hover {
  background: var(--orange-dark);
  transform: translateY(-2px);
}

.project-links {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.mobile-dropdown-toggle {
  display: none;
  align-items: center;
  justify-content: space-between;
  width: calc(100% - 32px);
  margin: 4px 16px;
  padding: 12px 16px;
  background: none;
  border: none;
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
}

.mobile-dropdown-toggle:hover {
  color: var(--orange);
}

.mobile-dropdown-toggle.active {
  color: var(--orange);
}

.dropdown-chevron {
  transition: transform 0.3s ease;
}

.mobile-dropdown-toggle.active .dropdown-chevron {
  transform: rotate(180deg);
}

.mobile-submenu {
  display: none;
  flex-direction: column;
  gap: 2px;
  padding: 0 16px 8px;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, opacity 0.3s ease;
  opacity: 0;
}

.mobile-submenu.open {
  max-height: 300px;
  opacity: 1;
}

.mobile-sub-link {
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 10px 24px;
  border-radius: var(--radius-pill);
  transition: var(--transition);
  text-align: center;
  margin: 2px 0;
}

.mobile-sub-link:hover {
  color: var(--orange);
  background: rgba(255, 140, 66, 0.1);
}

.mobile-sub-link.active {
  background: var(--orange);
  color: var(--white);
}

.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px;
  gap: 16px;
  color: var(--gray-text);
  grid-column: 1 / -1;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--gray);
  border-top-color: var(--orange);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@media (max-width: 1024px) {
  .project-detail-card .project-detail-image {
    height: 80px;
  }
}

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

  .nav-left,
  .nav-right {
    display: none;
  }

  .navbar {
    width: 92%;
    padding: 0 20px;
    height: 60px;
  }

  .mobile-menu {
    display: flex;
    top: 92px;
    width: 92%;
  }

  .mobile-dropdown-toggle {
    display: flex;
  }

  .mobile-submenu {
    display: flex;
  }

  .category-title {
    font-size: 2rem;
  }

  .filter-tabs {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding: 0 24px 8px;
    margin-bottom: 32px;
    gap: 8px;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
  }

  .filter-tabs::-webkit-scrollbar {
    display: none;
  }

  .filter-tab {
    flex: 0 0 auto;
    padding: 8px 20px;
    font-size: 0.85rem;
  }

  .projects-grid-category {
    grid-template-columns: 1fr;
    gap: 16px;
    padding: 0 8px;
  }

  .project-detail-card .project-detail-image {
    height: 100px;
  }

  .project-detail-info {
    padding: 16px;
    gap: 10px;
  }

  .project-detail-info h3 {
    font-size: 1.1rem;
  }

  .project-detail-info p {
    font-size: 0.9rem;
    display: block;
  }

  .btn-github, .btn-live {
    padding: 10px 16px;
    font-size: 0.85rem;
  }

  .project-links {
    flex-direction: row;
    gap: 10px;
  }

  .btn-github, .btn-live {
    width: auto;
  }
}

.loading-spinner {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px;
  gap: 16px;
  color: var(--gray-text);
  grid-column: 1 / -1;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--gray);
  border-top-color: var(--orange);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 24px;
  color: var(--gray-text);
}

.empty-state svg {
  margin-bottom: 16px;
  opacity: 0.4;
}

.empty-state p {
  font-size: 1rem;
  margin-bottom: 8px;
}

.empty-state .hint {
  font-size: 0.85rem;
}

.project-detail-image {
  width: 100%;
  height: 220px;
}

@media (max-width: 480px) {
  .category-title {
    font-size: 1.5rem;
    margin-bottom: 12px;
  }

  .project-detail-card .project-detail-image {
    height: 80px;
  }

  .project-detail-info {
    padding: 12px;
    gap: 8px;
  }

  .project-detail-info h3 {
    font-size: 1rem;
  }

  .project-detail-info p {
    font-size: 0.85rem;
  }

  .btn-github, .btn-live {
    padding: 8px 12px;
    font-size: 0.8rem;
  }

  .project-links {
    flex-direction: row;
    gap: 8px;
    flex-wrap: wrap;
  }

  .btn-github, .btn-live {
    width: auto;
    flex: 1;
    justify-content: center;
  }
}

  .project-detail-image {
    height: 180px;
  }

  .project-detail-info {
    padding: 16px;
  }

  .project-detail-info p {
    -webkit-line-clamp: 3;
  }

  .project-detail-info h3 {
    font-size: 1.1rem;
  }

  .project-links {
    flex-direction: column;
    gap: 8px;
  }

  .btn-github,
  .btn-live {
    width: 100%;
    justify-content: center;
  }
}