/* ==========================================
   通用动画样式
   ========================================== */

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

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

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

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

@keyframes scaleInUp {
  from {
    opacity: 0;
    transform: scale(0.8) translateY(30px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

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

@keyframes rotateIn {
  from {
    opacity: 0;
    transform: rotate(-10deg);
  }
  to {
    opacity: 1;
    transform: rotate(0);
  }
}

/* ==========================================
   弹跳动画
   ========================================== */

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

/* ==========================================
   滑动动画
   ========================================== */

@keyframes slideInLeft {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
  }
  to {
    transform: translateX(0);
  }
}

@keyframes slideInUp {
  from {
    transform: translateY(100%);
  }
  to {
    transform: translateY(0);
  }
}

/* ==========================================
   脉冲动画
   ========================================== */

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

/* ==========================================
   摇晃动画
   ========================================== */

@keyframes shake {
  0%, 100% {
    transform: translateX(0);
  }
  10%, 30%, 50%, 70%, 90% {
    transform: translateX(-5px);
  }
  20%, 40%, 60%, 80% {
    transform: translateX(5px);
  }
}

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

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

/* ==========================================
   漂浮动画
   ========================================== */

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

/* ==========================================
   旋转持续动画
   ========================================== */

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

/* ==========================================
   通用动画类
   ========================================== */

/* 淡入动画类 */
.animate-fade-in-up {
  opacity: 0;
  animation: fadeInUp 0.6s ease-out forwards;
}

.animate-fade-in-down {
  opacity: 0;
  animation: fadeInDown 0.6s ease-out forwards;
}

.animate-fade-in-left {
  opacity: 0;
  animation: fadeInLeft 0.6s ease-out forwards;
}

.animate-fade-in-right {
  opacity: 0;
  animation: fadeInRight 0.6s ease-out forwards;
}

.animate-fade-in {
  opacity: 0;
  animation: fadeIn 0.6s ease-out forwards;
}

/* 缩放动画类 */
.animate-scale-in {
  opacity: 0;
  animation: scaleIn 0.6s ease-out forwards;
}

.animate-scale-in-up {
  opacity: 0;
  animation: scaleInUp 0.6s ease-out forwards;
}

/* 旋转动画类 */
.animate-rotate-in {
  opacity: 0;
  animation: rotateIn 0.6s ease-out forwards;
}

/* 弹跳动画类 */
.animate-bounce-in {
  opacity: 0;
  animation: bounceIn 0.8s ease-out forwards;
}

/* 滑动动画类 */
.animate-slide-in-left {
  opacity: 0;
  animation: slideInLeft 0.6s ease-out forwards;
}

.animate-slide-in-right {
  opacity: 0;
  animation: slideInRight 0.6s ease-out forwards;
}

.animate-slide-in-up {
  opacity: 0;
  animation: slideInUp 0.6s ease-out forwards;
}

/* 持续动画类 */
.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-shake {
  animation: shake 0.5s ease-in-out;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-spin {
  animation: spin 1s linear infinite;
}

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

.animate-delay-100 {
  animation-delay: 0.1s;
}

.animate-delay-200 {
  animation-delay: 0.2s;
}

.animate-delay-300 {
  animation-delay: 0.3s;
}

.animate-delay-400 {
  animation-delay: 0.4s;
}

.animate-delay-500 {
  animation-delay: 0.5s;
}

.animate-delay-600 {
  animation-delay: 0.6s;
}

.animate-delay-700 {
  animation-delay: 0.7s;
}

.animate-delay-800 {
  animation-delay: 0.8s;
}

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

/* 元素初始状态（隐藏） */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

/* 元素进入视口（显示） */
.scroll-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* 不同的滚动动画方向 */
.scroll-reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

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

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

.scroll-reveal-scale {
  opacity: 0;
  transform: scale(0.8);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* ==========================================
   卡片悬停效果
   ========================================== */

.card-hover {
  transition: transform 0.3s ease-out, box-shadow 0.3s ease-out;
}

.card-hover:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px rgba(0, 0, 0, 0.15);
}

/* ==========================================
   按钮悬停效果
   ========================================== */

.btn-hover {
  position: relative;
  overflow: hidden;
  transition: all 0.3s ease;
}

.btn-hover::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.5s ease;
}

.btn-hover:hover::before {
  left: 100%;
}

/* ==========================================
   图标动画
   ========================================== */

.icon-bounce {
  animation: bounceIn 0.8s ease-out;
}

.icon-spin-slow {
  animation: spin 2s linear infinite;
}

.icon-float {
  animation: float 3s ease-in-out infinite;
}

/* ==========================================
   链接下划线动画
   ========================================== */

.link-underline {
  position: relative;
  text-decoration: none;
}

.link-underline::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-color);
  transition: width 0.3s ease;
}

.link-underline:hover::after {
  width: 100%;
}

/* ==========================================
   渐变背景动画
   ========================================== */

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

.animate-gradient {
  background-size: 200% 200%;
  animation: gradientShift 3s ease infinite;
}

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

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

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

@keyframes blink-caret {
  from, to {
    border-color: transparent;
  }
  50% {
    border-color: var(--primary-color);
  }
}

/* ==========================================
   无障碍优化
   ========================================== */

/* 为有偏好减少动画的用户禁用动画 */
@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;
  }
}

/* ==========================================
   响应式优化
   ========================================== */

/* 在移动设备上简化动画 */
@media (max-width: 768px) {
  .animate-fade-in-up,
  .animate-fade-in-down,
  .animate-fade-in-left,
  .animate-fade-in-right,
  .animate-scale-in,
  .animate-scale-in-up,
  .animate-rotate-in,
  .animate-bounce-in {
    animation-duration: 0.4s;
  }
}