/* 
 * 性能优化的动画样式
 * 使用 GPU 加速，避免掉帧卡顿
 */

/* ========== 基础动画设置 ========== */
* {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ========== 加载动画 ========== */
@keyframes spinner-rotate {
    0% { transform: rotate(0deg) translateZ(0); }
    100% { transform: rotate(360deg) translateZ(0); }
}

.loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid #f3f4f6;
    border-top-color: #2563eb;
    border-radius: 50%;
    will-change: transform;
    transform: translateZ(0);
    animation: spinner-rotate 0.8s linear infinite;
}

.loading-spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.loading-spinner-lg {
    width: 60px;
    height: 60px;
    border-width: 5px;
}

/* ========== 淡入淡出 ========== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateZ(0);
    }
    to {
        opacity: 1;
        transform: translateZ(0);
    }
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateZ(0);
    }
    to {
        opacity: 0;
        transform: translateZ(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease-out forwards;
    will-change: opacity;
}

.fade-out {
    animation: fadeOut 0.3s ease-out forwards;
    will-change: opacity;
}

/* ========== 滑入滑出 ========== */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translate3d(0, 30px, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

@keyframes slideInDown {
    from {
        opacity: 0;
        transform: translate3d(0, -30px, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

.slide-in-up {
    animation: slideInUp 0.3s ease-out forwards;
    will-change: transform, opacity;
}

.slide-in-down {
    animation: slideInDown 0.3s ease-out forwards;
    will-change: transform, opacity;
}

/* ========== 缩放动画 ========== */
@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale3d(0.9, 0.9, 1);
    }
    to {
        opacity: 1;
        transform: scale3d(1, 1, 1);
    }
}

@keyframes scaleOut {
    from {
        opacity: 1;
        transform: scale3d(1, 1, 1);
    }
    to {
        opacity: 0;
        transform: scale3d(0.9, 0.9, 1);
    }
}

.scale-in {
    animation: scaleIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    will-change: transform, opacity;
}

.scale-out {
    animation: scaleOut 0.2s ease-out forwards;
    will-change: transform, opacity;
}

/* ========== 弹跳动画 ========== */
@keyframes bounce {
    0%, 100% {
        transform: translateY(0) translateZ(0);
    }
    50% {
        transform: translateY(-10px) translateZ(0);
    }
}

.bounce {
    animation: bounce 0.6s ease-in-out;
    will-change: transform;
}

/* ========== 抖动动画 ========== */
@keyframes shake {
    0%, 100% {
        transform: translateX(0) translateZ(0);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: translateX(-10px) translateZ(0);
    }
    20%, 40%, 60%, 80% {
        transform: translateX(10px) translateZ(0);
    }
}

.shake {
    animation: shake 0.5s ease-in-out;
    will-change: transform;
}

/* ========== 脉冲动画 ========== */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale3d(1, 1, 1);
    }
    50% {
        opacity: 0.8;
        transform: scale3d(1.05, 1.05, 1);
    }
}

.pulse {
    animation: pulse 1.5s ease-in-out infinite;
    will-change: transform, opacity;
}

/* ========== Toast 通知动画 ========== */
@keyframes toastSlideIn {
    from {
        opacity: 0;
        transform: translate3d(0, -100%, 0);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
}

@keyframes toastSlideOut {
    from {
        opacity: 1;
        transform: translate3d(0, 0, 0);
    }
    to {
        opacity: 0;
        transform: translate3d(0, -100%, 0);
    }
}

.toast-slide-in {
    animation: toastSlideIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    will-change: transform, opacity;
}

.toast-slide-out {
    animation: toastSlideOut 0.2s ease-in forwards;
    will-change: transform, opacity;
}

/* ========== Modal 模态框动画 - 优化版本 ========== */
@keyframes modalBackdropFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes modalContentSlideIn {
    from {
        opacity: 0;
        transform: translate3d(0, -50px, 0) scale3d(0.95, 0.95, 1);
    }
    to {
        opacity: 1;
        transform: translate3d(0, 0, 0) scale3d(1, 1, 1);
    }
}

@keyframes modalContentSlideOut {
    from {
        opacity: 1;
        transform: translate3d(0, 0, 0) scale3d(1, 1, 1);
    }
    to {
        opacity: 0;
        transform: translate3d(0, 30px, 0) scale3d(0.95, 0.95, 1);
    }
}

.modal-backdrop-enter {
    animation: modalBackdropFadeIn 0.25s ease-out forwards;
    will-change: opacity;
}

.modal-backdrop-exit {
    animation: modalBackdropFadeOut 0.2s ease-in forwards;
}

.modal-content-enter {
    animation: modalContentSlideIn 0.25s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
    will-change: transform, opacity;
}

.modal-content-exit {
    animation: modalContentSlideOut 0.2s ease-in forwards;
}

/* ========== 骨架屏动画 ========== */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.skeleton {
    background: linear-gradient(
        90deg,
        #f0f0f0 0px,
        #f8f8f8 40px,
        #f0f0f0 80px
    );
    background-size: 1000px 100%;
    animation: shimmer 1.5s infinite linear;
    will-change: background-position;
}

/* ========== 进度条动画 ========== */
@keyframes progressIndeterminate {
    0% {
        transform: translateX(-100%) translateZ(0);
    }
    100% {
        transform: translateX(100%) translateZ(0);
    }
}

.progress-indeterminate::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    width: 50%;
    background: inherit;
    animation: progressIndeterminate 1.5s infinite linear;
    will-change: transform;
}

/* ========== 按钮悬停效果 ========== */
.btn-hover-lift {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    will-change: transform, box-shadow;
}

.btn-hover-lift:hover {
    transform: translateY(-2px) translateZ(0);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-hover-lift:active {
    transform: translateY(0) translateZ(0);
    box-shadow: 0 2px 4px rgba(37, 99, 235, 0.2);
}

/* ========== 卡片悬停效果 ========== */
.card-hover {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    will-change: transform, box-shadow;
}

.card-hover:hover {
    transform: translateY(-4px) translateZ(0);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* ========== 性能优化工具类 ========== */
.gpu-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

.smooth-scroll {
    -webkit-overflow-scrolling: touch;
    scroll-behavior: smooth;
}

/* ========== 减弱动画（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;
    }
}