/**
 * HAMA 动画系统
 * 中度动画：微动画 + 滚动动画 + Hero动画
 *
 * 依赖: variables.css
 */

/* ========================================
   基础设置
======================================== */

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

/* ========================================
   微动画 - Hover Effects
======================================== */

/* 悬停上浮 */
.hover-lift {
  transition: transform var(--duration-normal) var(--ease-out),
              box-shadow var(--duration-normal) var(--ease-out);
}

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

/* 悬停发光 */
.hover-glow {
  position: relative;
  transition: box-shadow var(--duration-normal) var(--ease-out);
}

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

/* 按钮脉冲 */
.btn-pulse {
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.8;
  }
}

/* 渐变流动背景 */
.gradient-shift {
  background: linear-gradient(
    135deg,
    var(--nvidia-green) 0%,
    var(--nvidia-green-dark) 50%,
    var(--nvidia-green) 100%
  );
  background-size: 200% 200%;
  animation: gradient-shift 3s ease infinite;
}

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

/* ========================================
   滚动动画 - Scroll Triggered
======================================== */

/* 从下淡入 */
.fade-in-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

/* 从左淡入 */
.fade-in-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

/* 从右淡入 */
.fade-in-right {
  opacity: 0;
  transform: translateX(30px);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

/* 缩放淡入 */
.scale-in {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity var(--duration-slow) var(--ease-out),
              transform var(--duration-slow) var(--ease-out);
}

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

/* 从底部滑入 */
.slide-in-bottom {
  opacity: 0;
  transform: translateY(50px);
  transition: opacity var(--duration-slower) var(--ease-out),
              transform var(--duration-slower) var(--ease-out);
}

.slide-in-bottom.animate {
  opacity: 1;
  transform: translateY(0);
}

/* 延迟动画（用于序列动画） */
.animate-delay-1 { transition-delay: 100ms; }
.animate-delay-2 { transition-delay: 200ms; }
.animate-delay-3 { transition-delay: 300ms; }
.animate-delay-4 { transition-delay: 400ms; }
.animate-delay-5 { transition-delay: 500ms; }

/* ========================================
   Hero 区动画 - First Screen
======================================== */

/* Hero标题逐字显示 */
.hero-title-reveal {
  opacity: 0;
  animation: hero-title-reveal 1s var(--ease-out) forwards;
}

@keyframes hero-title-reveal {
  0% {
    opacity: 0;
    transform: translateY(20px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Hero副标题淡入 */
.hero-subtitle-fade {
  opacity: 0;
  animation: hero-subtitle-fade 0.8s var(--ease-out) 0.3s forwards;
}

@keyframes hero-subtitle-fade {
  0% {
    opacity: 0;
    transform: translateY(15px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Hero CTA按钮弹入 */
.hero-cta-bounce {
  opacity: 0;
  transform: scale(0.8);
  animation: hero-cta-bounce 0.6s var(--ease-bounce) 0.6s forwards;
}

@keyframes hero-cta-bounce {
  0% {
    opacity: 0;
    transform: scale(0.8);
  }
  50% {
    transform: scale(1.05);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

/* ========================================
   特殊效果动画
======================================== */

/* 闪烁提示 */
.blink {
  animation: blink 1.5s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

/* 旋转加载 */
.spin {
  animation: spin 1s linear infinite;
}

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

/* 摇晃提示 */
.shake {
  animation: shake 0.5s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-10px); }
  75% { transform: translateX(10px); }
}

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

/* 硬件加速 - 仅在需要时使用 */
.will-change-transform {
  will-change: transform;
}

.will-change-opacity {
  will-change: opacity;
}

/* 动画完成后移除will-change */
.animate-complete {
  will-change: auto;
}

/* ========================================
   无障碍支持 - 尊重用户偏好
======================================== */

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

  .fade-in-up,
  .fade-in-left,
  .fade-in-right,
  .scale-in,
  .slide-in-bottom {
    opacity: 1 !important;
    transform: none !important;
  }
}

/* ========================================
   响应式调整
======================================== */

@media (max-width: 768px) {
  /* 移动端减少动画距离 */
  .fade-in-up { transform: translateY(20px); }
  .fade-in-left { transform: translateX(-20px); }
  .fade-in-right { transform: translateX(20px); }
  .slide-in-bottom { transform: translateY(30px); }
}