/* css/case-studies.css */

.case-studies-section {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.section-header {
  margin-bottom: 60px;
}

.metrics {
  display: flex;
  gap: 32px;
  margin-top: -16px;
}

.metric {
  font-size: 1rem;
  color: var(--text-secondary);
}

.metric strong {
  color: var(--text-primary);
  font-family: var(--font-display);
  font-size: 1.5rem;
  display: block;
}

.portfolio-bento-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 250px;
  gap: 24px;
}

.bento-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  text-decoration: none;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  transition: transform 0.4s cubic-bezier(0.2, 0.8, 0.2, 1), border-color 0.4s ease;
}

.bento-large {
  grid-column: span 2;
  grid-row: span 2;
}

.bento-tall {
  grid-row: span 2;
}

.bento-wide {
  grid-column: span 2;
}

.bento-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.8;
  transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1), opacity 0.4s ease;
  z-index: 1;
}

.bento-card:hover {
  transform: translateY(-5px);
  border-color: var(--text-secondary);
}

.bento-card:hover .bento-bg {
  transform: scale(1.05);
  opacity: 1;
}

.bento-content {
  position: relative;
  z-index: 2;
  padding: 32px;
  background: linear-gradient(to top, rgba(0,0,0,0.95) 0%, rgba(0,0,0,0.5) 60%, transparent 100%);
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
}

.bento-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.bento-header h3 {
  font-size: 1.5rem;
  color: var(--text-primary);
  margin: 0;
}

.external-icon {
  font-size: 1.2rem;
  color: var(--text-secondary);
  opacity: 0;
  transform: translate(-10px, 10px);
  transition: all 0.3s ease;
}

.bento-card:hover .external-icon {
  opacity: 1;
  transform: translate(0, 0);
  color: var(--accent);
}

.bento-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 16px;
  line-height: 1.4;
  opacity: 0.8;
  transform: translateY(10px);
  transition: all 0.4s ease;
}

.bento-card:hover .bento-content p {
  opacity: 1;
  transform: translateY(0);
}

.tech-stack {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.tech-stack span {
  font-size: 0.75rem;
  padding: 4px 10px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 100px;
  backdrop-filter: blur(4px);
  color: var(--text-primary);
}

/* Gradients */
.placeholder-gradient-1 { background: linear-gradient(135deg, #2a0845 0%, #6441A5 100%); }
.placeholder-gradient-2 { background: linear-gradient(135deg, #0F2027 0%, #203A43 50%, #2C5364 100%); }
.placeholder-gradient-3 { background: linear-gradient(135deg, #000000 0%, #434343 100%); }
.placeholder-gradient-4 { background: linear-gradient(135deg, #f12711 0%, #f5af19 100%); }
.placeholder-gradient-5 { background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%); }
.placeholder-gradient-6 { background: linear-gradient(135deg, #fc4a1a 0%, #f7b733 100%); }
.placeholder-gradient-7 { background: linear-gradient(135deg, #8E2DE2 0%, #4A00E0 100%); }
.placeholder-gradient-8 { background: linear-gradient(135deg, #00b09b 0%, #96c93d 100%); }

@media (max-width: 1024px) {
  .portfolio-bento-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .portfolio-bento-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: minmax(250px, auto);
  }
  .bento-large, .bento-wide, .bento-tall {
    grid-column: span 1;
    grid-row: span 1;
  }
  .bento-content p {
    opacity: 1;
    transform: none;
  }
  .external-icon {
    opacity: 1;
    transform: none;
  }
}