/* =========================================================
   AI Start · Animations Library
   动画增强：脉冲、流动、呼吸、逐步、弹入
   ========================================================= */

/* === 脉冲高亮 === */
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.08); opacity: 0.85; }
}
.reveal .pulse {
  animation: pulse 2s infinite ease-in-out;
}

/* === 呼吸发光 === */
@keyframes glow {
  0%, 100% { box-shadow: 0 0 5px var(--poster-accent); }
  50% { box-shadow: 0 0 30px var(--poster-accent), 0 0 60px var(--poster-accent); }
}
.reveal .glow {
  animation: glow 3s infinite ease-in-out;
}

/* === 流动线条（用于 SVG path） === */
@keyframes flow {
  from { stroke-dashoffset: 100; }
  to { stroke-dashoffset: 0; }
}
.reveal .flow-line {
  stroke-dasharray: 100;
  stroke-dashoffset: 100;
  animation: flow 2s ease forwards;
}
.reveal .fragment.visible .flow-line,
.reveal .current-fragment .flow-line {
  animation: flow 1.5s ease forwards;
}

/* === 逐帧打字机 === */
@keyframes typing {
  from { width: 0; }
  to { width: 100%; }
}
.reveal .typewriter {
  overflow: hidden;
  white-space: nowrap;
  border-right: 3px solid var(--poster-accent);
  animation: typing 2s steps(30) forwards, blink 0.7s step-end infinite;
  width: 0;
}
@keyframes blink {
  50% { border-color: transparent; }
}
.reveal .fragment.visible .typewriter {
  animation: typing 2s steps(30) forwards, blink 0.7s step-end infinite;
}

/* === 弹入（scale up bounce） === */
@keyframes bounce-in {
  0% { transform: scale(0.3); opacity: 0; }
  50% { transform: scale(1.05); }
  70% { transform: scale(0.95); }
  100% { transform: scale(1); opacity: 1; }
}
.reveal .fragment.bounce-in {
  opacity: 0;
  transform: scale(0.3);
}
.reveal .fragment.bounce-in.visible {
  animation: bounce-in 0.6s ease forwards;
}

/* === 从左滑入 === */
@keyframes slide-in-left {
  from { transform: translateX(-100px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}
.reveal .fragment.slide-left {
  opacity: 0;
  transform: translateX(-100px);
}
.reveal .fragment.slide-left.visible {
  animation: slide-in-left 0.5s ease forwards;
}

/* === 从右滑入 === */
@keyframes slide-in-right {
  from { transform: translateX(100px); opacity: 0; }
  to { transform: translateX(0); opacity: 1; }
}
.reveal .fragment.slide-right {
  opacity: 0;
  transform: translateX(100px);
}
.reveal .fragment.slide-right.visible {
  animation: slide-in-right 0.5s ease forwards;
}

/* === 连线动画（Arrow SVG） === */
@keyframes draw-arrow {
  from { stroke-dashoffset: 200; }
  to { stroke-dashoffset: 0; }
}
.reveal .draw-arrow {
  stroke-dasharray: 200;
  stroke-dashoffset: 200;
}
.reveal .fragment.visible .draw-arrow {
  animation: draw-arrow 1s ease forwards;
}

/* === 数字计数器 === */
@keyframes count-up {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
.reveal .count-up {
  opacity: 0;
}
.reveal .fragment.visible .count-up,
.reveal .count-up.active {
  animation: count-up 0.5s ease forwards;
}

/* === 步骤指示器 === */
.reveal .step-indicator {
  display: flex;
  gap: 0.6em;
  margin: 0.8em 0;
}
.reveal .step-indicator .step {
  width: 2.4em;
  height: 2.4em;
  border-radius: 50%;
  border: 3px solid #444;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 0.9em;
  transition: all 0.4s ease;
  font-family: var(--poster-font-mono);
}
.reveal .step-indicator .step.active {
  border-color: var(--poster-accent);
  background: var(--poster-accent);
  color: #000;
  transform: scale(1.2);
}
.reveal .step-indicator .step-line {
  width: 2em;
  height: 3px;
  background: #444;
  align-self: center;
  border-radius: 2px;
  transition: background 0.4s;
}
.reveal .step-indicator .step-line.active {
  background: var(--poster-accent);
}

/* === 交互式组件样式 === */
.reveal .interactive-box {
  background: rgba(255,255,255,0.03);
  border: 2px solid #333;
  border-radius: 12px;
  padding: 1em;
  margin: 0.6em 0;
}
.reveal .interactive-box:hover {
  border-color: var(--poster-accent);
}

/* 滑块 */
.reveal input[type="range"] {
  -webkit-appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: #333;
  outline: none;
  margin: 0.5em 0;
}
.reveal input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--poster-accent);
  cursor: pointer;
  box-shadow: 0 0 10px var(--poster-accent);
}

/* 输出区 */
.reveal .demo-output {
  font-family: var(--poster-font-mono);
  background: #111;
  border-radius: 8px;
  padding: 0.8em;
  margin-top: 0.5em;
  font-size: 0.8em;
  min-height: 2em;
  border: 1px solid #333;
  color: var(--poster-accent);
}

/* === 动态 SVG 图表 === */
.reveal .svg-diagram {
  width: 100%;
  max-height: 60%;
  margin: 0.5em auto;
  display: block;
}
.reveal .svg-diagram .node {
  transition: all 0.3s ease;
}
.reveal .svg-diagram .node:hover {
  filter: brightness(1.3);
  transform: scale(1.05);
}
.reveal .svg-diagram .node text {
  font-family: var(--poster-font-en), var(--poster-font-zh);
  font-weight: 700;
}
.reveal .svg-diagram .edge {
  stroke-width: 2;
  fill: none;
  stroke: #666;
}
.reveal .svg-diagram .edge.active {
  stroke: var(--poster-accent);
  stroke-width: 3;
}

/* === 逐步进度条 === */
.reveal .progress-steps {
  display: flex;
  align-items: center;
  gap: 0;
  margin: 1em 0;
}
.reveal .progress-steps .ps-node {
  padding: 0.4em 0.8em;
  background: #222;
  border: 2px solid #444;
  border-radius: 8px;
  font-size: 0.75em;
  font-weight: 700;
  transition: all 0.4s;
  white-space: nowrap;
}
.reveal .progress-steps .ps-node.done {
  background: var(--poster-accent);
  border-color: var(--poster-accent);
  color: #000;
}
.reveal .progress-steps .ps-arrow {
  width: 2em;
  text-align: center;
  color: #555;
  font-size: 1.2em;
}
.reveal .progress-steps .ps-arrow.done {
  color: var(--poster-accent);
}