/* ========================================
   Elements Section - 原神介绍网站
   ======================================== */

.elements-section {
  position: relative;
  z-index: 1;
}

/* Element Orbs */
.element-orbs {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-bottom: 60px;
  flex-wrap: wrap;
}

.element-orb {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  cursor: default;
  transition: var(--transition-base);
}

.element-orb::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 35%, var(--orb-color-light, rgba(255,255,255,0.15)), var(--orb-color, rgba(255,255,255,0.05)));
  border: 1px solid var(--orb-color, rgba(255,255,255,0.1));
  transition: var(--transition-base);
}

.element-orb::after {
  content: '';
  position: absolute;
  inset: -4px;
  border-radius: 50%;
  border: 1px solid var(--orb-color, rgba(255,255,255,0.05));
  opacity: 0;
  transition: var(--transition-base);
}

.element-orb svg {
  width: 36px;
  height: 36px;
  position: relative;
  z-index: 1;
}

.element-orb:hover {
  transform: scale(1.15);
}

.element-orb:hover::before {
  box-shadow: 0 0 30px var(--orb-color, rgba(255,255,255,0.2)), 0 0 60px var(--orb-color-alpha, rgba(255,255,255,0.1));
}

.element-orb:hover::after {
  opacity: 1;
}

.element-orb-label {
  position: absolute;
  bottom: -24px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  font-weight: 500;
}

/* Reaction Cards Grid */
.reactions-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.reaction-card {
  background: var(--color-bg-card);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: var(--transition-base);
  cursor: default;
  position: relative;
  overflow: hidden;
}

.reaction-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--reaction-color-a, var(--color-accent-gold)), var(--reaction-color-b, var(--color-accent-gold-light)));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.reaction-card:hover {
  transform: translateY(-4px);
  background: var(--color-bg-card-hover);
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-card-hover);
}

.reaction-card:hover::before {
  opacity: 1;
}

.reaction-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.reaction-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-md);
  flex-shrink: 0;
}

.reaction-icon svg {
  width: 24px;
  height: 24px;
}

.reaction-name {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--color-text-primary);
}

.reaction-formula {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  margin-bottom: 10px;
  font-family: monospace;
  letter-spacing: 0.5px;
}

.reaction-desc {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* Responsive */
@media (max-width: 900px) {
  .reactions-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .element-orbs {
    gap: 16px;
  }

  .element-orb {
    width: 64px;
    height: 64px;
  }

  .element-orb svg {
    width: 28px;
    height: 28px;
  }
}

@media (max-width: 600px) {
  .reactions-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .element-orbs {
    gap: 12px;
  }

  .element-orb {
    width: 56px;
    height: 56px;
  }

  .element-orb svg {
    width: 24px;
    height: 24px;
  }

  .element-orb-label {
    font-size: 0.68rem;
    bottom: -20px;
  }
}