/* NeuroStride - 动画效果 CSS */

/* 基础动画关键帧 */
@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);
  }
}

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

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

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

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

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

/* 动画类 */
.animate-fadeIn { animation: fadeIn 1s ease forwards; }
.animate-fadeInUp { animation: fadeInUp 1s ease forwards; }
.animate-fadeInDown { animation: fadeInDown 1s ease forwards; }
.animate-fadeInLeft { animation: fadeInLeft 1s ease forwards; }
.animate-fadeInRight { animation: fadeInRight 1s ease forwards; }
.animate-scaleIn { animation: scaleIn 1s ease forwards; }
.animate-pulse { animation: pulse 2s ease infinite; }
.animate-float { animation: float 3s ease-in-out infinite; }

/* 带延迟的动画类 */
.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; }
.delay-900 { animation-delay: 900ms; }
.delay-1000 { animation-delay: 1000ms; }

/* 滚动触发动画 */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-reveal.animated {
  opacity: 1;
  transform: translateY(0);
}

.scroll-reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-reveal-left.animated {
  opacity: 1;
  transform: translateX(0);
}

.scroll-reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-reveal-right.animated {
  opacity: 1;
  transform: translateX(0);
}

.scroll-reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.scroll-reveal-scale.animated {
  opacity: 1;
  transform: scale(1);
}

/* 交互动效 */
.hover-lift {
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
  transform: translateY(-8px);
  box-shadow: 0 15px 30px rgba(0,0,0,0.1);
}

.hover-scale {
  transition: transform 0.3s ease;
}

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

.hover-rotate {
  transition: transform 0.3s ease;
}

.hover-rotate:hover {
  transform: rotate(5deg);
}

/* 文字渐变动画 */
.text-gradient {
  background: linear-gradient(120deg, #fff 0%, #1eb6e7 100%);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradient 3s ease infinite;
}

/* 特效边框 */
.animated-border {
  position: relative;
}

.animated-border::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: #1eb6e7;
  transition: width 0.3s ease;
}

.animated-border:hover::after {
  width: 100%;
}

/* 按钮动画 */
.btn-slide {
  position: relative;
  overflow: hidden;
  z-index: 1;
  transition: color 0.3s ease;
}

.btn-slide::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: #1eb6e7;
  transition: all 0.3s ease;
  z-index: -1;
}

.btn-slide:hover {
  color: #fff;
}

.btn-slide:hover::before {
  left: 0;
}

/* 闪烁效果 */
.shimmer {
  background: linear-gradient(90deg, rgba(255,255,255,0), rgba(255,255,255,0.5), rgba(255,255,255,0));
  background-size: 200% 100%;
  animation: shimmer 2s infinite;
}

/* 渐变背景 */
.bg-gradient-animated {
  background: linear-gradient(270deg, #1a2a3a, #2d1e0f);
  background-size: 400% 400%;
  animation: gradient 8s ease infinite;
}

/* 滚动监听脚本 */
.js-scroll-init {
  opacity: 0;
}

/* 固定导航栏动画 */
.header-fixed {
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  z-index: 1000;
  box-sizing: border-box;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.header-fixed.scrolled {
  background: rgba(34, 34, 34, 0.95);
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}