/* ============================================
   Scene 5: AI + OR-Tools 协同工作流
   ============================================ */

.scene--ai-workflow {
  background-color: var(--bg-primary);
}

/* ── 管线容器 ── */
.pipeline {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 0;
  padding: var(--space-10) 0;
  margin-bottom: var(--space-12);
  overflow-x: auto;
}

/* ── 管线阶段 ── */
.pipeline-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  width: 160px;
  padding: var(--space-5);
  position: relative;
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.5s var(--ease-out-expo), transform 0.5s var(--ease-out-back);
}

.pipeline-stage.visible {
  opacity: 1;
  transform: scale(1);
}

/* ── 阶段图标 ── */
.pipeline-icon {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-3xl);
  background: var(--bg-card);
  border-radius: var(--radius-full);
  border: 2px solid var(--border-subtle);
  margin-bottom: var(--space-3);
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.pipeline-label {
  font-weight: 700;
  font-size: var(--font-size-sm);
  color: var(--text-primary);
  margin-top: var(--space-1);
  text-align: center;
}

.pipeline-detail {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  text-align: center;
  margin-top: var(--space-1);
}

/* ── 阶段类型变体 ── */
.pipeline-stage[data-stage="ai"] .pipeline-icon {
  border-color: var(--accent-purple);
  box-shadow: var(--shadow-glow-purple);
}

.pipeline-stage[data-stage="ai"].visible .pipeline-icon {
  animation: glow-pulse 2s ease-in-out infinite;
  box-shadow: 0 0 20px var(--accent-purple-glow), 0 0 40px rgba(60, 42, 105, 0.15);
}

.pipeline-stage[data-stage="ortools"] .pipeline-icon {
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-glow);
}

.pipeline-stage[data-stage="ortools"].visible .pipeline-icon {
  animation: glow-pulse 2s ease-in-out 0.5s infinite;
  box-shadow: 0 0 20px var(--accent-blue-glow), 0 0 40px rgba(0, 59, 115, 0.15);
}

/* ── 连接线 ── */
.pipeline-connector {
  width: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: 20px; /* 对齐到图标中心 */
  position: relative;
  flex-shrink: 0;
}

.pipeline-flow {
  height: 3px;
  width: 100%;
  background: var(--bg-card);
  border-radius: var(--radius-full);
  position: relative;
  overflow: hidden;
}

.pipeline-flow::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, var(--accent-blue), var(--accent-purple), transparent);
  border-radius: var(--radius-full);
}

.pipeline-flow.active::after {
  animation: pipeline-data-flow 1.2s ease-in-out forwards;
}

@keyframes pipeline-data-flow {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* 持续流动（初始动画结束后） */
.pipeline-flow.flowing::after {
  animation: pipeline-data-flow-loop 2s linear infinite;
}

@keyframes pipeline-data-flow-loop {
  0% { left: -100%; }
  100% { left: 100%; }
}

/* ── Pipeline Checks ── */
.pipeline-checks {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  margin-top: var(--space-3);
  width: 100%;
}

.pipeline-check {
  font-size: var(--font-size-xs);
  color: var(--accent-green);
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  white-space: nowrap;
  font-weight: 500;
}

.pipeline-check.visible {
  opacity: 1;
  transform: translateX(0);
}

/* ── AI 子视觉区域（神经网络小图） ── */
.pipeline-sub-visual {
  width: 120px;
  height: 60px;
  margin-top: var(--space-2);
}

/* ── Pipeline 粒子 ── */
.pipeline-particles {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  pointer-events: none;
}

/* ── 对比表格 ── */
.comparison-table {
  background: var(--gradient-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  backdrop-filter: blur(var(--glass-blur));
}

.comparison-table table {
  width: 100%;
  border-collapse: collapse;
}

.comparison-table th {
  background: var(--bg-card);
  padding: var(--space-4) var(--space-5);
  text-align: left;
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--text-primary);
  border-bottom: 2px solid var(--border-subtle);
  white-space: nowrap;
}

.comparison-table td {
  padding: var(--space-4) var(--space-5);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  border-bottom: 1px solid var(--border-subtle);
}

.comparison-table tbody tr:last-child td {
  border-bottom: none;
}

.comparison-table tbody tr {
  transition: background-color var(--transition-fast);
}

.comparison-table tbody tr:hover {
  background: rgba(0, 59, 115, 0.05);
}

/* ── 表格高亮行 ── */
.table-highlight {
  background: rgba(0, 59, 115, 0.08) !important;
  box-shadow: inset 0 0 30px rgba(0, 59, 115, 0.05);
}

.table-highlight td {
  color: var(--text-primary) !important;
  font-weight: 600;
}

/* ── 辅助颜色类 ── */
.text-red {
  color: var(--accent-red) !important;
}

.text-green {
  color: var(--accent-green) !important;
}

/* ── 响应式：管线纵向 ── */
@media (max-width: 900px) {
  .pipeline {
    flex-direction: column;
    align-items: center;
    gap: 0;
    padding: var(--space-6) 0;
  }

  .pipeline-connector {
    width: 3px;
    height: 40px;
    padding-top: 0;
    flex-direction: column;
  }

  .pipeline-flow {
    width: 3px;
    height: 100%;
  }

  .pipeline-flow::after {
    width: 100%;
    height: 100%;
    top: -100%;
    left: 0;
  }

  .pipeline-flow.active::after {
    animation: pipeline-data-flow-vertical 1.2s ease-in-out forwards;
  }

  .pipeline-flow.flowing::after {
    animation: pipeline-data-flow-vertical-loop 2s linear infinite;
  }

  @keyframes pipeline-data-flow-vertical {
    0% { top: -100%; }
    100% { top: 100%; }
  }

  @keyframes pipeline-data-flow-vertical-loop {
    0% { top: -100%; }
    100% { top: 100%; }
  }

  .pipeline-stage {
    width: auto;
  }

  .comparison-table {
    overflow-x: auto;
  }
}