/* ========== Animations CSS ========== */

/* 通用渐入动画类 */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

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

/* 延迟类 */
.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }
.delay-400 { transition-delay: 0.4s; }
.delay-500 { transition-delay: 0.5s; }
.delay-600 { transition-delay: 0.6s; }

/* Hero 内容动画 */
.hero-greeting {
  animation: fadeInDown 0.8s ease forwards;
}

.hero-name {
  animation: fadeInUp 0.8s ease 0.2s forwards;
  opacity: 0;
}

.hero-title-wrapper {
  animation: fadeInUp 0.8s ease 0.4s forwards;
  opacity: 0;
}

.hero-description {
  animation: fadeInUp 0.8s ease 0.6s forwards;
  opacity: 0;
}

.hero-buttons {
  animation: fadeInUp 0.8s ease 0.8s forwards;
  opacity: 0;
}

.scroll-indicator {
  animation: fadeInUp 0.8s ease 1s forwards, float 3s ease-in-out 1.8s infinite;
  opacity: 0;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* 悬浮光晕效果 */
.glow-on-hover {
  position: relative;
  overflow: hidden;
}

.glow-on-hover::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle,
    rgba(102, 126, 234, 0.1) 0%,
    transparent 60%
  );
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.glow-on-hover:hover::after {
  opacity: 1;
}

/* 进度条动画 */
.progress-bar {
  width: 0;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.progress-bar.animated {
  width: var(--progress);
}

/* 打字机光标 */
.typewriter-cursor {
  display: inline-block;
  animation: cursorBlink 1s step-end infinite;
  font-weight: 100;
  color: var(--primary);
}

@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

/* 浮动装饰元素 */
@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes floatSlow {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  33% {
    transform: translateY(-8px) rotate(2deg);
  }
  66% {
    transform: translateY(-4px) rotate(-1deg);
  }
}

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

/* 旋转动画 */
@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* 涟漪效果 */
@keyframes ripple {
  0% {
    transform: scale(1);
    opacity: 0.5;
  }
  100% {
    transform: scale(2.5);
    opacity: 0;
  }
}

/* 时间线动画 */
.timeline-item {
  opacity: 0;
  transform: translateX(-20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.timeline-item.visible {
  opacity: 1;
  transform: translateX(0);
}

/* 卡片悬浮粒子效果 */
.portfolio-card {
  position: relative;
}

.portfolio-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(
    800px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(102, 126, 234, 0.06),
    transparent 40%
  );
  border-radius: inherit;
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 0;
}

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

/* 背景网格 */
.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    linear-gradient(rgba(102, 126, 234, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(102, 126, 234, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  z-index: 0;
  pointer-events: none;
}

/* 渐变光晕背景 */
.hero::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle,
    rgba(102, 126, 234, 0.08) 0%,
    rgba(118, 75, 162, 0.05) 30%,
    transparent 70%
  );
  z-index: 0;
  pointer-events: none;
  animation: pulse 8s ease-in-out infinite;
}

/* Section 之间的分隔装饰 */
.section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 1px;
  background: var(--gradient);
}

.hero::before,
.hero::after {
  /* Hero 已有自己的伪元素 */
}

/* 粒子画布 */
.particles-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

/* 加载动画 */
@keyframes loading {
  0% {
    width: 0;
  }
  100% {
    width: 100%;
  }
}

/* 弹性动画 */
@keyframes bounceIn {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    opacity: 1;
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.95);
  }
  100% {
    transform: scale(1);
  }
}

/* 滑入动画 */
@keyframes slideInFromLeft {
  from {
    opacity: 0;
    transform: translateX(-100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInFromRight {
  from {
    opacity: 0;
    transform: translateX(100%);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* 文字渐变动画 */
@keyframes gradientText {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.animated-gradient-text {
  background: linear-gradient(
    270deg,
    var(--primary),
    var(--secondary),
    #f093fb,
    var(--primary)
  );
  background-size: 300% 300%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientText 6s ease infinite;
}

/* 星星闪烁 */
@keyframes twinkle {
  0%, 100% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 1;
    transform: scale(1.2);
  }
}