/* ===== PORTFOLIO SECTION ===== */
.portfolio {
  position: relative;
  padding: 6rem 0;
  background: #f8faff;
  overflow: hidden;
  background: linear-gradient(135deg, #f8faff 0%, #f0f6ff 100%);
}

.portfolio .section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 4rem;
  position: relative;
  z-index: 2;
}

.portfolio .eyebrow {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--primary);
  margin-bottom: 1rem;
  padding: 0.5rem 1.25rem;
  background: rgba(10, 132, 255, 0.1);
  border-radius: 100px;
  position: relative;
  overflow: hidden;
}

.portfolio .eyebrow::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.portfolio .eyebrow:hover::after {
  transform: translateX(100%);
}

.portfolio h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  color: #0a1a2e;
  position: relative;
  display: inline-block;
  background: linear-gradient(90deg, #0a1a2e, #0a3d91);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.portfolio h2::after {
  content: '';
  display: block;
  width: 80px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), #4dabff);
  margin: 1rem auto 0;
  border-radius: 2px;
}

.portfolio .section-intro {
  font-size: 1.25rem;
  color: #4a5568;
  line-height: 1.7;
  margin: 0 auto 3rem;
  max-width: 720px;
  text-align: center;
  font-weight: 400;
}

/* Portfolio Filter */
.portfolio-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 3.5rem;
  position: relative;
  z-index: 3;
}

.filter-btn {
  padding: 0.6rem 1.5rem;
  border-radius: 100px;
  background: white;
  border: 1px solid #e2e8f0;
  color: #4a5568;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  font-size: 0.9375rem;
  position: relative;
  overflow: hidden;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.03);
}

.filter-btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.filter-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(10, 25, 47, 0.08);
  border-color: #cbd5e0;
}

.filter-btn:hover::before {
  transform: translateX(100%);
}

.filter-btn.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(10, 132, 255, 0.2);
}

/* App Store Badges */
.app-badges {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
  flex-wrap: wrap;
}

.app-badge {
  height: 40px;
  transition: transform 0.2s ease;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.app-badge:hover {
  transform: translateY(-2px);
}

/* Portfolio Grid */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
  position: relative;
  z-index: 2;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 1200px) {
  .portfolio-grid {
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  }
}

.portfolio-item {
  position: relative;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 15px 40px rgba(10, 25, 47, 0.08);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  background: white;
  height: 100%;
  display: flex;
  flex-direction: column;
  border: 1px solid rgba(0, 0, 0, 0.05);
  transform: translateY(0);
}

.portfolio-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(10, 132, 255, 0.05) 0%, rgba(10, 132, 255, 0.01) 100%);
  z-index: 1;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.portfolio-item:hover::before {
  opacity: 1;
}

.portfolio-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 25px 50px -12px rgba(10, 25, 47, 0.15);
  border-color: rgba(10, 132, 255, 0.2);
}

.portfolio-item:active {
  transform: translateY(-4px);
}

.portfolio-img-container {
  position: relative;
  overflow: hidden;
  padding-top: 75%; /* 4:3 Aspect Ratio for mobile screenshots */
  background: #f8f9ff;
  background: linear-gradient(135deg, #f0f4ff 0%, #e6edff 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.4s ease;
}

.portfolio-item:hover .portfolio-img-container {
  background: linear-gradient(135deg, #e6edff 0%, #d6e4ff 100%);
}

.portfolio-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.portfolio-item:hover .portfolio-img {
  transform: scale(1.05);
}

.portfolio-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent 60%);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  align-items: flex-end;
  padding: 2rem;
  color: white;
  z-index: 2;
  transform: translateY(20px);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
  transform: translateY(0);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-content {
  padding: 1.75rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  position: relative;
  z-index: 2;
  background: white;
  transition: all 0.3s ease;
}

.portfolio-item:hover .portfolio-content {
  background: rgba(255, 255, 255, 0.95);
}

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

.portfolio-tag {
  display: inline-block;
  padding: 0.35rem 0.9rem;
  background: rgba(10, 132, 255, 0.1);
  color: var(--primary);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.02em;
  transition: all 0.2s ease;
  border: 1px solid rgba(10, 132, 255, 0.15);
}

.portfolio-tag:hover {
  background: rgba(10, 132, 255, 0.15);
  transform: translateY(-1px);
}

.portfolio-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 0.75rem;
  color: #0a1a2e;
  transition: all 0.3s ease;
  line-height: 1.3;
  position: relative;
  display: inline-block;
}

.portfolio-title::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: width 0.3s ease;
}

.portfolio-item:hover .portfolio-title::after {
  width: 100%;
}

.portfolio-item:hover .portfolio-title {
  color: var(--primary);
}

.portfolio-description {
  color: #4a5568;
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: 1.25rem;
  flex-grow: 1;
  transition: color 0.3s ease;
}

.portfolio-item:hover .portfolio-description {
  color: #4a5568;
}

.portfolio-links {
  display: flex;
  gap: 0.75rem;
  margin-top: auto;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
  position: relative;
  z-index: 2;
}

.portfolio-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
  background: rgba(10, 132, 255, 0.05);
  border: 1px solid rgba(10, 132, 255, 0.1);
}

.portfolio-link::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, rgba(10, 132, 255, 0.1), rgba(10, 132, 255, 0.2), rgba(10, 132, 255, 0.1));
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.portfolio-link:hover {
  background: rgba(10, 132, 255, 0.1);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(10, 132, 255, 0.1);
}

.portfolio-link:hover::before {
  transform: translateX(100%);
}

.portfolio-link i {
  font-size: 1.1em;
  transition: transform 0.3s ease;
}

.portfolio-link:hover i {
  transform: translateX(2px);
}

.portfolio-link {
  font-size: 0.9375rem;
}

.portfolio-link:hover {
  color: var(--primary-dark);
}

/* Portfolio CTA */
.portfolio-cta {
  text-align: center;
  margin-top: 4rem;
  position: relative;
  z-index: 2;
}

.portfolio-cta p {
  font-size: 1.125rem;
  color: var(--text-light);
  margin-bottom: 1.5rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Decorative Elements */
.portfolio-decor {
  position: absolute;
  pointer-events: none;
  z-index: 1;
  opacity: 0.6;
}

.portfolio-decor-1 {
  top: 10%;
  left: 5%;
  width: 150px;
  height: 150px;
  border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
  background: linear-gradient(135deg, rgba(10, 132, 255, 0.1), rgba(90, 200, 250, 0.1));
  animation: float 8s ease-in-out infinite;
}

.portfolio-decor-2 {
  bottom: 10%;
  right: 5%;
  width: 200px;
  height: 200px;
  border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
  background: linear-gradient(135deg, rgba(90, 200, 250, 0.1), rgba(10, 132, 255, 0.1));
  animation: float 10s ease-in-out infinite reverse;
}

/* Responsive Adjustments */
@media (min-width: 768px) {
  .portfolio {
    padding: 8rem 0;
  }
  
  .portfolio-grid {
    gap: 2rem;
  }
  
  .portfolio-item.featured {
    grid-column: span 2;
  }
}

@media (max-width: 767px) {
  .portfolio-filter {
    gap: 0.5rem;
    margin-bottom: 2rem;
  }
  
  .filter-btn {
    padding: 0.375rem 1rem;
    font-size: 0.875rem;
  }
  
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
}

/* Animation */
@keyframes float {
  0% { transform: translateY(0) rotate(0deg); }
  50% { transform: translateY(-20px) rotate(2deg); }
  100% { transform: translateY(0) rotate(0deg); }
}