/* ========================================
   动画效果
   ======================================== */

/* ==================== 淡入动画 ==================== */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

/* ==================== 缩放动画 ==================== */

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes scaleInBounce {
  0% {
    opacity: 0;
    transform: scale(0.3);
  }
  50% {
    transform: scale(1.05);
  }
  70% {
    transform: scale(0.9);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* ==================== 旋转动画 ==================== */

@keyframes rotate {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.7;
    transform: scale(0.95);
  }
}

/* ==================== 闪烁动画 ==================== */

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(139, 92, 246, 0.4), 0 0 40px rgba(6, 182, 212, 0.2);
  }
  50% {
    box-shadow: 0 0 40px rgba(139, 92, 246, 0.6), 0 0 60px rgba(6, 182, 212, 0.4);
  }
}

/* 霓虹灯效果 */
@keyframes neon-pulse {
  0%, 100% {
    text-shadow: 
      0 0 10px rgba(139, 92, 246, 0.8),
      0 0 20px rgba(139, 92, 246, 0.6),
      0 0 30px rgba(139, 92, 246, 0.4);
  }
  50% {
    text-shadow: 
      0 0 20px rgba(139, 92, 246, 1),
      0 0 30px rgba(139, 92, 246, 0.8),
      0 0 40px rgba(139, 92, 246, 0.6),
      0 0 50px rgba(6, 182, 212, 0.4);
  }
}

/* ==================== 渐变动画 ==================== */

@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

/* ==================== 浮动动画 ==================== */

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

/* ==================== 滚动触发动画类 ==================== */

.animate-on-scroll {
  opacity: 0;
  transition: opacity var(--duration-slow) var(--easing-default),
              transform var(--duration-slow) var(--easing-default);
}

.animate-on-scroll.animated {
  opacity: 1;
}

/* 淡入动画类 */
.fade-in {
  animation: fadeIn var(--duration-slow) var(--easing-default) forwards;
}

.fade-in-up {
  animation: fadeInUp var(--duration-slow) var(--easing-default) forwards;
}

.fade-in-down {
  animation: fadeInDown var(--duration-slow) var(--easing-default) forwards;
}

.fade-in-left {
  animation: fadeInLeft var(--duration-slow) var(--easing-default) forwards;
}

.fade-in-right {
  animation: fadeInRight var(--duration-slow) var(--easing-default) forwards;
}

/* 缩放动画类 */
.scale-in {
  animation: scaleIn var(--duration-slow) var(--easing-default) forwards;
}

.scale-in-bounce {
  animation: scaleInBounce var(--duration-slower) var(--easing-bounce) forwards;
}

/* ==================== 延迟动画 ==================== */

.delay-100 { animation-delay: 100ms; }
.delay-200 { animation-delay: 200ms; }
.delay-300 { animation-delay: 300ms; }
.delay-400 { animation-delay: 400ms; }
.delay-500 { animation-delay: 500ms; }
.delay-600 { animation-delay: 600ms; }
.delay-700 { animation-delay: 700ms; }
.delay-800 { animation-delay: 800ms; }

/* ==================== 悬停效果 ==================== */

.hover-lift {
  transition: transform var(--duration-normal) var(--easing-default),
              box-shadow var(--duration-normal) var(--easing-default);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.hover-scale {
  transition: transform var(--duration-normal) var(--easing-default);
}

.hover-scale:hover {
  transform: scale(1.05);
}

.hover-glow {
  transition: box-shadow var(--duration-normal) var(--easing-default);
}

.hover-glow:hover {
  box-shadow: var(--shadow-glow);
}

/* ==================== 背景动画 ==================== */

.animated-gradient {
  background: linear-gradient(
    -45deg,
    #8B5CF6,
    #EC4899,
    #06B6D4,
    #A78BFA
  );
  background-size: 400% 400%;
  animation: gradientShift 15s ease infinite;
}

/* 玻璃态效果 */
.glass-effect {
  background: rgba(26, 26, 26, 0.7);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(139, 92, 246, 0.2);
}

/* 悬浮卡片效果 */
@keyframes card-float {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  25% {
    transform: translateY(-10px) rotate(1deg);
  }
  75% {
    transform: translateY(-5px) rotate(-1deg);
  }
}

/* ==================== 粒子背景 ==================== */

.particles-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  z-index: -1;
}

.particle {
  position: absolute;
  border-radius: 50%;
  pointer-events: none;
  filter: blur(1px);
  animation: particle-float 6s ease-in-out infinite;
}

@keyframes particle-float {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  25% {
    transform: translate(20px, -30px) scale(1.2);
  }
  50% {
    transform: translate(-20px, -60px) scale(0.8);
  }
  75% {
    transform: translate(30px, -30px) scale(1.1);
  }
}

/* ==================== 加载动画 ==================== */

.spinner {
  width: 40px;
  height: 40px;
  border: 4px solid var(--bg-tertiary);
  border-top-color: var(--primary-color);
  border-radius: 50%;
  animation: rotate 1s linear infinite;
}

/* ==================== 打字机效果 ==================== */

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

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

.typewriter {
  overflow: hidden;
  border-right: 2px solid var(--primary-color);
  white-space: nowrap;
  animation: typing 3s steps(40) 1s forwards,
             blink 0.75s step-end infinite;
}

/* ==================== 滚动指示器 ==================== */

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

.scroll-indicator {
  animation: bounce 2s infinite;
}

/* ==================== 进度条动画 ==================== */

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

.progress-bar {
  animation: progress 2s ease-out forwards;
}

/* ==================== 波纹效果 ==================== */

@keyframes ripple {
  0% {
    transform: scale(0);
    opacity: 1;
  }
  100% {
    transform: scale(4);
    opacity: 0;
  }
}

.ripple-effect {
  position: relative;
  overflow: hidden;
}

.ripple-effect::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.5);
  transform: translate(-50%, -50%);
  animation: ripple 0.6s ease-out;
}

/* ==================== 文字渐变动画 ==================== */

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% auto;
  animation: gradientShift 3s linear infinite;
}

/* ==================== 响应式动画控制 ==================== */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ==================== 性能优化 ==================== */

.will-animate {
  will-change: transform, opacity;
}

.gpu-accelerated {
  transform: translateZ(0);
  backface-visibility: hidden;
  perspective: 1000px;
}