/* ==========================================
   Sparctura Tech PORTFOLIO & CASE STUDIES STYLESHEET
   ========================================== */

.portfolio-hero {
  padding-top: 8rem;
  padding-bottom: 3rem;
  position: relative;
  overflow: hidden;
}

.portfolio-mesh {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background: radial-gradient(circle at 80% 20%, rgba(212, 175, 55, 0.04) 0%, transparent 50%);
  filter: blur(60px);
}

/* Category Filter Bar */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 4rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--surface);
  border: 1px solid var(--glass-border);
  color: var(--text-secondary);
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-full);
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
  border-color: var(--primary);
  color: var(--text-primary);
  box-shadow: var(--shadow-gold);
}

/* Portfolio Grid */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem;
}

@media (max-width: 768px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.portfolio-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.portfolio-card.hidden {
  display: none !important;
}

.portfolio-img-container {
  width: 100%;
  aspect-ratio: 1.6;
  background: var(--surface-hover);
  border-radius: var(--radius-md);
  border: 1px solid var(--glass-border);
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.portfolio-card-img {
  width: 90%;
  height: 90%;
  object-fit: contain;
  transition: transform var(--transition-normal);
}

.portfolio-card:hover .portfolio-card-img {
  transform: scale(1.03);
}

.portfolio-card-info {
  padding: 1.5rem 0.5rem;
}

.portfolio-card-tag {
  font-family: 'Outfit', sans-serif;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
}

.portfolio-card-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.portfolio-card-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Interactive Before-After Slider Container */
.before-after-section {
  background: var(--surface);
  position: relative;
}

.before-after-wrapper {
  max-width: 800px;
  margin: 0 auto;
}

.comparison-slider-container {
  position: relative;
  width: 100%;
  aspect-ratio: 1.8;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border);
  user-select: none;
  box-shadow: var(--shadow-lg), var(--shadow-gold);
}

@media (max-width: 600px) {
  .comparison-slider-container {
    aspect-ratio: 1.3;
  }
}

.slider-panel {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Before panel is layered on top of After panel */
.panel-after {
  background-color: #1A1F2B;
}

.panel-before {
  background-color: #0A0D14;
  width: var(--divider-percent, 50%);
  border-right: 2px solid var(--primary);
  z-index: 2;
}

.panel-label {
  position: absolute;
  bottom: 1.25rem;
  padding: 0.4rem 1rem;
  background: rgba(13, 17, 23, 0.8);
  backdrop-filter: blur(5px);
  border-radius: var(--radius-sm);
  font-family: 'Outfit', sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-primary);
  letter-spacing: 0.05em;
  pointer-events: none;
}

.panel-before .panel-label {
  left: 1.25rem;
  border-left: 2px solid #E74C3C;
}

.panel-after .panel-label {
  right: 1.25rem;
  border-right: 2px solid var(--primary);
}

.slider-graphic-mock {
  font-family: monospace;
  font-size: 1.25rem;
  color: var(--text-muted);
  text-align: center;
  width: 80%;
}

.panel-after .slider-graphic-mock {
  color: var(--primary);
}

/* Translucent range slider input overlaid */
.slider-input {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: ew-resize;
  z-index: 10;
}

.slider-bar-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--divider-percent, 50%);
  width: 4px;
  background: var(--primary);
  transform: translateX(-50%);
  z-index: 5;
  pointer-events: none;
  box-shadow: 0 0 10px rgba(212, 175, 55, 0.4);
}

.slider-handle-button {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--primary);
  color: #0D1117;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.25rem;
  box-shadow: var(--shadow-md);
}