/* ===================================
   PROJECTS SECTION
   Filterable Card Grid with Hover Effects
   =================================== */

.projects {
  padding: var(--section-padding) 0;
  background: var(--color-bg-primary);
  position: relative;
}

/* ========== FILTERS ========== */
.project-filters {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  background: var(--color-bg-secondary);
  border: 2px solid transparent;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.filter-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  transition: left var(--transition-base);
  z-index: -1;
}

.filter-btn:hover {
  color: var(--color-text-white);
}

.filter-btn:hover::before {
  left: 0;
}

.filter-btn--active {
  background: var(--gradient-primary);
  color: var(--color-text-white);
  box-shadow: var(--shadow-glow-purple);
}

.filter-btn--active::before {
  left: 0;
}

/* ========== PROJECTS GRID ========== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

/* ========== PROJECT CARD ========== */
.project-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-bg-secondary);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-xl);
}

.project-card__image {
  position: relative;
  width: 100%;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: linear-gradient(135deg, #0f2027 0%, #2c5364 100%);
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
  opacity: 0;
}

.project-card__image img[src] {
  opacity: 1;
}

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

/* ========== PROJECT OVERLAY ========== */
.project-card__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    135deg,
    rgba(15, 32, 39, 0.96) 0%,
    rgba(44, 83, 100, 0.96) 100%
  );
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 1rem;
  opacity: 0;
  transition: opacity var(--transition-base);
  gap: 0.375rem;
}

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

.project-card__title {
  font-size: 1rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-white);
  margin-bottom: 0.375rem;
  text-align: center;
  transform: translateY(20px);
  transition: transform var(--transition-base);
  line-height: 1.3;
  max-width: 100%;
  padding: 0 0.5rem;
}

.project-card:hover .project-card__title {
  transform: translateY(0);
}

.project-card__description {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.95);
  text-align: center;
  margin-bottom: 0.375rem;
  transform: translateY(20px);
  transition: transform var(--transition-base);
  transition-delay: 0.1s;
  line-height: 1.4;
  max-width: 100%;
  padding: 0 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.project-card:hover .project-card__description {
  transform: translateY(0);
}

/* ========== TAGS ========== */
.project-card__tags {
  display: flex;
  gap: 0.3rem;
  margin-bottom: 0.375rem;
  flex-wrap: wrap;
  justify-content: center;
  transform: translateY(20px);
  transition: transform var(--transition-base);
  transition-delay: 0.2s;
  max-width: 100%;
  padding: 0 0.5rem;
}

.project-card:hover .project-card__tags {
  transform: translateY(0);
}

.tag {
  padding: 0.15rem 0.45rem;
  font-size: 0.65rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-white);
  background: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(5px);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.4);
  white-space: nowrap;
}

/* ========== PROJECT LINKS ========== */
.project-card__links {
  display: flex;
  gap: var(--spacing-sm);
  transform: translateY(20px);
  transition: transform var(--transition-base);
  transition-delay: 0.3s;
}

.project-card:hover .project-card__links {
  transform: translateY(0);
}

.project-link {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(5px);
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--color-text-white);
  transition: all var(--transition-fast);
}

.project-link:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1) rotate(5deg);
}

/* ========== FILTER ANIMATIONS ========== */
.project-card.hidden {
  display: none;
}

.project-card.filtering-out {
  animation: scale-out 0.3s ease-out forwards;
}

.project-card.filtering-in {
  animation: scale-in 0.3s ease-out forwards;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 768px) {
  .projects-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .filter-btn {
    padding: 0.5rem 1rem;
    font-size: var(--font-size-sm);
  }

  .project-card__overlay {
    opacity: 1;
    background: linear-gradient(
      to top,
      rgba(15, 32, 39, 0.95) 0%,
      rgba(44, 83, 100, 0.85) 50%,
      transparent 100%
    );
    justify-content: flex-end;
    align-items: flex-start;
  }

  .project-card__title,
  .project-card__description,
  .project-card__tags,
  .project-card__links {
    transform: translateY(0);
  }
}