/* ========================================
   AI Agent Guide - 动画效果库
   ======================================== */

/* ===== 流程图节点动画 ===== */
.flowchart-container {
  width: 100%;
  margin: var(--space-lg) 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  position: relative;
  overflow: hidden;
  min-height: 200px;
  display: flex;
  justify-content: center;
  align-items: center;
}

.flowchart-svg {
  width: 100%;
  height: auto;
  display: block;
}

.flowchart-svg .node {
  cursor: pointer;
  transition: all 0.3s ease;
}

.flowchart-svg .node rect {
  fill: var(--color-surface);
  stroke: var(--color-border-dark);
  stroke-width: 1.5;
  rx: 8;
  ry: 8;
  transition: all 0.3s ease;
}

.flowchart-svg .node.active rect {
  fill: var(--color-accent);
  stroke: var(--color-accent-dark);
  stroke-width: 2;
}

.flowchart-svg .node.highlight rect {
  fill: rgba(231, 111, 81, 0.15);
  stroke: var(--color-accent);
}

.flowchart-svg .node text {
  font-family: var(--font-sans);
  font-size: 13px;
  fill: var(--color-text);
  text-anchor: middle;
  dominant-baseline: central;
  pointer-events: none;
}

.flowchart-svg .node.active text {
  fill: white;
  font-weight: 600;
}

.flowchart-svg .edge {
  fill: none;
  stroke: var(--color-border-dark);
  stroke-width: 1.5;
  transition: all 0.3s ease;
}

.flowchart-svg .edge.active {
  stroke: var(--color-accent);
  stroke-width: 2.5;
}

.flowchart-svg .edge.dashed {
  stroke-dasharray: 5, 4;
}

.flowchart-svg .edge-label {
  font-family: var(--font-sans);
  font-size: 11px;
  fill: var(--color-text-tertiary);
  text-anchor: middle;
}

.flowchart-svg .edge-label.active {
  fill: var(--color-accent);
  font-weight: 600;
}

/* 流动粒子动画 */
.flowchart-svg .particle {
  fill: var(--color-accent);
  r: 4;
  opacity: 0;
  transition: opacity 0.3s;
}

.flowchart-svg .particle.active {
  opacity: 1;
  animation: flow 1.5s linear infinite;
}

@keyframes flow {
  from { offset-distance: 0%; }
  to { offset-distance: 100%; }
}

/* ===== 步骤动画 ===== */
.step-animation {
  margin: var(--space-lg) 0;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.step-canvas {
  min-height: 200px;
  position: relative;
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-content {
  text-align: center;
  width: 100%;
}

.step-content .step-number {
  display: inline-flex;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--color-accent);
  color: white;
  align-items: center;
  justify-content: center;
  font-size: var(--text-md);
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.step-content .step-title {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-sm);
}

.step-content .step-desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  max-width: 500px;
  margin: 0 auto;
  line-height: 1.8;
}

.step-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  padding-top: var(--space-md);
  border-top: 1px solid var(--color-border);
}

.step-controls .step-btn {
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-surface);
  color: var(--color-text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-md);
  transition: var(--transition);
}

.step-controls .step-btn:hover:not(:disabled) {
  background: var(--color-surface-hover);
  border-color: var(--color-border-dark);
  color: var(--color-text);
}

.step-controls .step-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.step-controls .step-indicator {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
  min-width: 60px;
  text-align: center;
}

.step-controls .step-replay {
  padding: 4px 12px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text-tertiary);
  font-size: var(--text-xs);
  cursor: pointer;
  transition: var(--transition);
}

.step-controls .step-replay:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

/* ===== 对比动画 ===== */
.compare-animation {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}

.compare-animation .compare-side {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  position: relative;
  overflow: hidden;
}

.compare-animation .compare-side .side-label {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-tertiary);
  margin-bottom: var(--space-md);
}

.compare-animation .compare-side .side-content {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.8;
  min-height: 120px;
}

.compare-animation .compare-side .side-content .highlight-line {
  padding: 4px 8px;
  margin: 4px 0;
  border-radius: var(--radius-sm);
  background: transparent;
  transition: var(--transition);
}

.compare-animation .compare-side .side-content .highlight-line.active {
  background: rgba(231, 111, 81, 0.12);
  color: var(--color-text);
}

.compare-animation .compare-side.left .side-label {
  color: var(--color-info);
}

.compare-animation .compare-side.right .side-label {
  color: var(--color-success);
}

/* ===== 淡入动画 ===== */
.fade-in {
  animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in-up {
  opacity: 0;
  animation: fadeInUp 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* 聊天消息特殊动画 */
.chat-msg {
  animation: chatMsgIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes chatMsgIn {
  from { 
    opacity: 0; 
    transform: translateY(10px) scale(0.98); 
  }
  to { 
    opacity: 1; 
    transform: translateY(0) scale(1); 
  }
}

/* ===== 脉冲动画 ===== */
.pulse {
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.8; }
}

/* ===== 打字机效果 ===== */
.typewriter {
  overflow: hidden;
  white-space: nowrap;
  border-right: 2px solid var(--color-accent);
  animation: typing 2s steps(40, end), blink 0.7s step-end infinite;
}

@keyframes typing {
  from { width: 0; }
  to { width: 100%; }
}

@keyframes blink {
  50% { border-color: transparent; }
}

/* ===== 循环轨道动画 ===== */
.orbit-container {
  position: relative;
  width: 100%;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orbit-center {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-primary);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: 600;
  z-index: 2;
  position: relative;
}

.orbit-item {
  position: absolute;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--color-surface);
  border: 2px solid var(--color-accent);
  color: var(--color-text);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: 500;
  transition: all 0.5s ease;
}

.orbit-item.active {
  background: var(--color-accent);
  color: white;
  transform: scale(1.1);
}

/* ===== 进度环动画 ===== */
.progress-ring {
  position: relative;
  width: 120px;
  height: 120px;
  margin: 0 auto;
}

.progress-ring svg {
  transform: rotate(-90deg);
}

.progress-ring .ring-bg {
  fill: none;
  stroke: var(--color-border);
  stroke-width: 4;
}

.progress-ring .ring-fill {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 339.292;
  stroke-dashoffset: 339.292;
  transition: stroke-dashoffset 0.8s ease;
}

.progress-ring .ring-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--color-primary);
}

/* ===== 标签弹出动画 ===== */
.pop-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: var(--text-xs);
  font-weight: 500;
  opacity: 0;
  transform: scale(0.8);
  animation: popIn 0.4s ease forwards;
}

@keyframes popIn {
  to { opacity: 1; transform: scale(1); }
}

/* ===== 连接线动画 ===== */
.connector-line {
  stroke: var(--color-accent);
  stroke-width: 2;
  fill: none;
  stroke-dasharray: 200;
  stroke-dashoffset: 200;
  animation: drawLine 0.8s ease forwards;
}

@keyframes drawLine {
  to { stroke-dashoffset: 0; }
}

/* ===== 高亮闪烁 ===== */
.highlight-flash {
  animation: flash 0.6s ease;
}

@keyframes flash {
  0%, 100% { background: transparent; }
  50% { background: rgba(231, 111, 81, 0.2); }
}

/* ===== 翻页过渡 ===== */
.page-transition {
  animation: pageIn 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes pageIn {
  from { 
    opacity: 0; 
    transform: translateY(12px); 
  }
  to { 
    opacity: 1; 
    transform: translateY(0); 
  }
}