/* ===== UNIQUE PROJECTS PAGE HEADER ===== */
.projects-header {
  position: relative;
  padding: 5rem 0 3rem;
  text-align: center;
  overflow: hidden;
}
.projects-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at top, rgba(99,102,241,0.1) 0%, transparent 70%);
  pointer-events: none;
}
.header-glow {
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(6,182,212,0.15) 0%, transparent 70%);
  border-radius: 50%;
  animation: floatGlow 8s ease-in-out infinite;
  pointer-events: none;
  z-index: -1;
}
@keyframes floatGlow {
  0%, 100% { transform: translateX(-50%) scale(1); opacity: 0.6; }
  50% { transform: translateX(-50%) scale(1.1); opacity: 0.8; }
}
.page-header h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}
.page-description {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto 2rem;
  position: relative;
  z-index: 1;
}

/* ===== FILTER TABS (Unique to Projects) ===== */
.project-filters {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
  position: relative;
  z-index: 1;
}
.filter-btn {
  padding: 0.6rem 1.5rem;
  border-radius: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}
.filter-btn:hover {
  color: var(--primary);
  background: var(--badge-bg);
  border-color: var(--badge-border);
}
[data-theme="dark"] .filter-btn:hover {
  color: var(--text);
  background: var(--surface-hover);
}
.filter-btn.active {
  background: var(--gradient-main) !important;
  color: #ffffff !important;
  border-color: transparent !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px var(--primary-glow);
}

/* ===== MASONRY GRID LAYOUT (Unique) ===== */
.projects-masonry {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 1.75rem;
  /* Masonry effect with CSS columns fallback */
  column-count: 1;
}
@media (min-width: 768px) {
  .projects-masonry {
    column-count: 2;
  }
}
@media (min-width: 1024px) {
  .projects-masonry {
    column-count: 3;
  }
}

/* ===== UNIQUE PROJECT CARD DESIGN ===== */
.project-card {
  break-inside: avoid; /* Prevent card splitting across columns */
  display: flex;
  flex-direction: column;
  height: 100%;
  border-radius: 20px;
  overflow: hidden;
  position: relative;
  transition: var(--transition);
}
.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(99,102,241,0.05) 50%, transparent 100%);
  opacity: 0;
  transition: var(--transition);
  pointer-events: none;
  z-index: 1;
}
.project-card:hover {
  transform: translateY(-6px) scale(1.01);
  border-color: var(--accent);
  box-shadow: 0 25px 50px rgba(0,0,0,0.4), 0 0 30px rgba(6,182,212,0.2);
}
.project-card:hover::before {
  opacity: 1;
}

/* Card Header with Accent Border */
.project-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-main);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
  z-index: 2;
}
.project-card:hover::after {
  transform: scaleX(1);
}

/* Project Thumbnail with Unique Hover */
.project-thumb {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 16px 16px 0 0;
  margin-bottom: 1.25rem;
  border: 1px solid var(--border);
  transition: transform 0.5s ease, filter 0.3s ease;
}
.project-card:hover .project-thumb {
  transform: scale(1.05);
  filter: brightness(1.1) saturate(1.2);
}

/* Card Content */
.project-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}
.project-card h3 a {
  position: relative;
}
.project-card h3 a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-main);
  transition: width 0.3s ease;
}
.project-card h3 a:hover::after {
  width: 100%;
}

/* Unique Tag Style */
.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0;
}
.tag {
  font-size: 0.75rem;
  padding: 0.3rem 0.9rem;
  border-radius: 20px;
  background: rgba(99,102,241,0.15);
  color: var(--primary);
  font-weight: 500;
  border: 1px solid rgba(99,102,241,0.3);
  transition: var(--transition);
  cursor: default;
}
.tag:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(99,102,241,0.4);
}

/* Highlights List with Custom Bullets */
.highlights-list {
  list-style: none;
  margin: 1rem 0;
  padding-left: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}
.highlights-list li {
  padding-left: 1.5rem;
  position: relative;
  margin-bottom: 0.5rem;
}
.highlights-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 600;
  transition: transform 0.2s ease;
}
.highlights-list li:hover::before {
  transform: translateX(3px);
}

/* Card Footer with Animated Button */
.project-card .btn {
  width: 100%;
  justify-content: center;
  margin-top: auto;
}
.project-card .btn::after {
  content: '→';
  margin-left: 0.25rem;
  transition: transform 0.2s ease;
}
.project-card .btn:hover::after {
  transform: translateX(3px);
}

/* ===== LOADING STATE ===== */
.loading-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-muted);
  grid-column: 1 / -1;
}
.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 0 auto 1.5rem;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ===== UNIQUE CTA CARD ===== */
.cta-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}
.cta-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(99,102,241,0.1) 0%, rgba(6,182,212,0.1) 100%);
  z-index: -1;
}
.cta-content {
  flex: 1;
  max-width: 500px;
}
.cta-content h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}
.cta-actions {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}
.cta-decoration {
  display: flex;
  gap: 0.75rem;
  align-items: center;
}
.decoration-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gradient-main);
  animation: pulseDot 2s ease-in-out infinite;
}
.decoration-dot.delay-1 { animation-delay: 0.3s; }
.decoration-dot.delay-2 { animation-delay: 0.6s; }
@keyframes pulseDot {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.3); opacity: 0.7; }
}

/* ===== FILTER ANIMATIONS ===== */
.project-card.filtered-out {
  opacity: 0.4;
  transform: scale(0.98);
  pointer-events: none;
}
.project-card.filtered-in {
  animation: filterIn 0.4s ease forwards;
}
@keyframes filterIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== RESPONSIVE ADJUSTMENTS ===== */
@media (max-width: 900px) {
  .projects-masonry {
    column-count: 1;
  }
  .cta-card {
    flex-direction: column;
    text-align: center;
  }
  .cta-actions {
    justify-content: center;
  }
  .cta-decoration {
    margin-top: 1.5rem;
  }
}

@media (max-width: 768px) {
  .projects-header {
    padding: 3.5rem 0 2rem;
  }

  .project-filters {
    justify-content: flex-start;
    overflow-x: auto;
    flex-wrap: nowrap;
    padding: 0.5rem 0.5rem 0.85rem;
    scrollbar-width: none;
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
  }

  .project-filters::-webkit-scrollbar {
    display: none;
  }

  .filter-btn {
    flex-shrink: 0;
    padding: 0.55rem 1.2rem;
    font-size: 0.88rem;
    min-height: 42px;
    white-space: nowrap;
  }

  .cta-actions {
    flex-direction: column;
    align-items: center;
    width: 100%;
  }

  .cta-actions .btn {
    width: 100%;
    max-width: 320px;
  }
}

/* ===== PRINT STYLES ===== */
@media print {
  .project-filters, .cta-card, .nav, .footer { display: none !important; }
  .projects-masonry { column-count: 1 !important; }
  .project-card { break-inside: avoid; page-break-inside: avoid; }
}