:root {
    --macos-ease-standard: cubic-bezier(0.4, 0.0, 0.2, 1);      /* 标准缓动 */
    --macos-ease-decelerate: cubic-bezier(0.0, 0.0, 0.2, 1);    /* 减速缓动 */
    --macos-ease-accelerate: cubic-bezier(0.4, 0.0, 1.0, 1.0);  /* 加速缓动 */
    --macos-ease-spring: cubic-bezier(0.175, 0.885, 0.32, 1.275); /* 弹性效果 */
    --macos-ease-smooth: cubic-bezier(0.25, 0.1, 0.25, 1.0);   /* 平滑缓动 */

    --duration-instant: 0.1s;
    --duration-fast: 0.3s;
    --duration-normal: 0.6s;
    --duration-slow: 1.0s;      
    --duration-slower: 1.2s;   
    --duration-slowest: 1.5s;  

    --will-change-transform: transform;
    --will-change-opacity: opacity;
    --gpu-accelerated: translateZ(0);
}

/* ========== 开机动画 ========== */
@keyframes bootFadeIn {
    0% { 
        opacity: 0; 
        transform: scale(0.96) translateY(10px);
        filter: blur(2px);
    }
    40% {
        opacity: 0.6;
        transform: scale(0.98) translateY(5px);
        filter: blur(1px);
    }
    100% { 
        opacity: 1; 
        transform: scale(1) translateY(0);
        filter: blur(0);
    }
}

@keyframes logoPulse {
    0%, 100% { 
        opacity: 0.85; 
        transform: scale(1);
        text-shadow: 0 0 8px rgba(255,255,255,0.2);
    }
    50% { 
        opacity: 1; 
        transform: scale(1.02);
        text-shadow: 0 0 20px rgba(255,255,255,0.5);
    }
}

@keyframes progressShimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* ========== 菜单栏动画 (1.0秒) ========== */
@keyframes menuBarSlideDown {
    0% { 
        opacity: 0;
        transform: translateY(-100%);
    }
    60% {
        opacity: 1;
        transform: translateY(5%);
    }
    100% { 
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes submenuReveal {
    0% { 
        opacity: 0;
        transform: scale(0.96) translateY(-8px);
        filter: blur(4px);
    }
    100% { 
        opacity: 1;
        transform: scale(1) translateY(0);
        filter: blur(0);
    }
}

/* ========== Dock动画系统 (1.2秒) ========== */
@keyframes dockSlideUp {
    0% { 
        opacity: 0;
        transform: translateY(100%) scaleY(0.8);
    }
    40% {
        opacity: 0.8;
        transform: translateY(-5%) scaleY(1.02);
    }
    70% {
        transform: translateY(2%) scaleY(0.99);
    }
    100% { 
        opacity: 1;
        transform: translateY(0) scaleY(1);
    }
}

@keyframes dockItemPop {
    0% { 
        opacity: 0; 
        transform: scale(0.6) translateY(30px);
        filter: blur(8px);
    }
    50% {
        opacity: 0.9;
        transform: scale(1.05) translateY(-5px);
        filter: blur(2px);
    }
    75% {
        transform: scale(0.98) translateY(2px);
        filter: blur(0);
    }
    100% { 
        opacity: 1; 
        transform: scale(1) translateY(0);
        filter: blur(0);
    }
}

@keyframes dockBounce {
    0%, 100% { transform: scale(1) translateY(0); }
    25% { transform: scale(1.15) translateY(-12px); }
    50% { transform: scale(1.08) translateY(-6px); }
    75% { transform: scale(1.02) translateY(-2px); }
}

@keyframes badgeAppear {
    0% { 
        opacity: 0;
        transform: scale(0) translateY(10px);
    }
    40% {
        opacity: 1;
        transform: scale(1.2) translateY(-3px);
    }
    70% {
        transform: scale(0.95) translateY(1px);
    }
    100% { 
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

/* ========== 窗口动画系统 (1.2-1.5秒) ========== */
@keyframes windowOpen {
    0% { 
        opacity: 0; 
        transform: scale(0.88) translateY(40px);
        filter: blur(12px);
    }
    30% {
        opacity: 0.6;
        transform: scale(0.95) translateY(15px);
        filter: blur(6px);
    }
    60% {
        opacity: 0.9;
        transform: scale(1.02) translateY(-5px);
        filter: blur(2px);
    }
    85% {
        transform: scale(0.995) translateY(2px);
        filter: blur(0);
    }
    100% { 
        opacity: 1; 
        transform: scale(1) translateY(0);
        filter: blur(0);
    }
}

@keyframes windowClose {
    0% { 
        opacity: 1; 
        transform: scale(1);
        filter: blur(0);
    }
    30% {
        opacity: 0.8;
        transform: scale(1.02);
        filter: blur(2px);
    }
    70% {
        opacity: 0.3;
        transform: scale(0.9);
        filter: blur(6px);
    }
    100% { 
        opacity: 0; 
        transform: scale(0.85);
        filter: blur(12px);
    }
}

/* Genie Effect */
@keyframes windowMinimizeGenie {
    0% {
        opacity: 1;
        transform: scale(1) translateY(0) skewX(0deg);
        filter: blur(0);
        clip-path: inset(0 0 0 0);
    }
    25% {
        opacity: 0.9;
        transform: scale(0.95) translateY(10px) skewX(-2deg);
        filter: blur(1px);
    }
    50% {
        opacity: 0.7;
        transform: scale(0.6) translateY(60px) skewX(-8deg);
        filter: blur(3px);
        clip-path: inset(20% 10% 40% 10%);
    }
    75% {
        opacity: 0.4;
        transform: scale(0.3) translateY(100px) skewX(-15deg);
        filter: blur(6px);
        clip-path: inset(40% 20% 50% 20%);
    }
    100% {
        opacity: 0;
        transform: scale(0.1) translateY(150px) skewX(-20deg);
        filter: blur(12px);
        clip-path: inset(45% 25% 45% 25%);
    }
}

@keyframes windowRestoreFromDock {
    0% {
        opacity: 0;
        transform: scale(0.1) translateY(150px) skewX(20deg);
        filter: blur(12px);
        clip-path: inset(45% 25% 45% 25%);
    }
    25% {
        opacity: 0.4;
        transform: scale(0.3) translateY(100px) skewX(15deg);
        filter: blur(6px);
        clip-path: inset(40% 20% 50% 20%);
    }
    50% {
        opacity: 0.7;
        transform: scale(0.6) translateY(60px) skewX(8deg);
        filter: blur(3px);
        clip-path: inset(20% 10% 40% 10%);
    }
    75% {
        opacity: 0.9;
        transform: scale(0.95) translateY(10px) skewX(2deg);
        filter: blur(1px);
    }
    90% {
        opacity: 1;
        transform: scale(1.02) translateY(-3px) skewX(0deg);
        filter: blur(0);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0) skewX(0deg);
        filter: blur(0);
        clip-path: inset(0 0 0 0);
    }
}

@keyframes windowFullscreen {
    0% {
        opacity: 0.8;
        transform: scale(0.95);
        border-radius: 12px;
    }
    40% {
        opacity: 1;
        transform: scale(1.01);
    }
    70% {
        transform: scale(0.998);
    }
    100% {
        opacity: 1;
        transform: scale(1);
        border-radius: 0;
    }
}

@keyframes windowExitFullscreen {
    0% {
        opacity: 0.9;
        transform: scale(1.02);
        border-radius: 0;
    }
    50% {
        opacity: 1;
        transform: scale(0.98);
    }
    100% {
        opacity: 1;
        transform: scale(1);
        border-radius: 12px;
    }
}

@keyframes windowFocusPulse {
    0%, 100% { 
        box-shadow: 0 8px 32px rgba(0,0,0,0.12);
    }
    50% { 
        box-shadow: 0 16px 48px rgba(0,0,0,0.2);
    }
}

/* ========== 桌面图标动画 (1.0秒) ========== */
@keyframes iconFadeInStagger {
    0% { 
        opacity: 0; 
        transform: translateY(20px) scale(0.9);
        filter: blur(4px);
    }
    60% {
        opacity: 0.8;
        transform: translateY(-3px) scale(1.02);
        filter: blur(1px);
    }
    100% { 
        opacity: 1; 
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

@keyframes iconSelect {
    0% { transform: scale(1); }
    40% { transform: scale(1.08); }
    70% { transform: scale(0.98); }
    100% { transform: scale(1); }
}

/* ========== 右键菜单动画 (1.0秒) ========== */
@keyframes contextMenuAppear {
    0% { 
        opacity: 0;
        transform: scale(0.92) translateY(-10px);
        filter: blur(8px);
    }
    50% {
        opacity: 0.9;
        transform: scale(1.01) translateY(2px);
        filter: blur(2px);
    }
    75% {
        transform: scale(0.995) translateY(-1px);
    }
    100% { 
        opacity: 1;
        transform: scale(1) translateY(0);
        filter: blur(0);
    }
}

/* ========== 控制中心动画 (1.2秒) ========== */
@keyframes controlCenterSlide {
    0% {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
        filter: blur(12px);
    }
    40% {
        opacity: 0.8;
        transform: translateY(5px) scale(1.01);
        filter: blur(4px);
    }
    70% {
        transform: translateY(-2px) scale(0.998);
        filter: blur(1px);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
        filter: blur(0);
    }
}

@keyframes moduleStagger {
    0% {
        opacity: 0;
        transform: translateX(-15px) scale(0.96);
    }
    60% {
        opacity: 1;
        transform: translateX(3px) scale(1.01);
    }
    100% {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

/* ========== Siri界面动画 (1.5秒) ========== */
@keyframes siriOrbPulse {
    0%, 100% {
        transform: scale(1);
        opacity: 0.8;
        filter: blur(0);
    }
    50% {
        transform: scale(1.1);
        opacity: 1;
        filter: blur(2px);
    }
}

@keyframes siriInterfaceReveal {
    0% {
        opacity: 0;
        transform: scale(0.9) translateY(30px);
        backdrop-filter: blur(0);
    }
    40% {
        opacity: 0.9;
        transform: scale(1.02) translateY(-5px);
    }
    100% {
        opacity: 1;
        transform: scale(1) translateY(0);
        backdrop-filter: blur(20px);
    }
}

/* ========== 拖拽/调整大小视觉反馈 (1.0秒) ========== */
@keyframes dragLift {
    0% {
        transform: scale(1);
        box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    }
    100% {
        transform: scale(1.02);
        box-shadow: 0 20px 60px rgba(0,0,0,0.25);
    }
}

@keyframes resizeIndicator {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

/* ========== 动画类应用 ========== */
.anim-boot-fade-in {
    animation: bootFadeIn 1.5s var(--macos-ease-decelerate) forwards;
}

.anim-logo-pulse {
    animation: logoPulse 2s ease-in-out infinite;
}

.anim-menu-bar-slide {
    animation: menuBarSlideDown 1.0s var(--macos-ease-decelerate) forwards;
}

.anim-submenu-reveal {
    animation: submenuReveal 0.8s var(--macos-ease-spring) forwards;
}

.anim-dock-slide-up {
    animation: dockSlideUp 1.2s var(--macos-ease-spring) 0.3s backwards;
}

.anim-dock-item-pop {
    animation: dockItemPop 1.0s var(--macos-ease-spring) backwards;
}

.anim-dock-bounce {
    animation: dockBounce 1.0s var(--macos-ease-spring);
}

.anim-badge-appear {
    animation: badgeAppear 1.0s var(--macos-ease-spring) forwards;
}

.anim-window-open {
    animation: windowOpen 1.2s var(--macos-ease-spring) forwards;
}

.anim-window-close {
    animation: windowClose 1.0s var(--macos-ease-accelerate) forwards;
}

.anim-window-minimize {
    animation: windowMinimizeGenie 1.2s var(--macos-ease-accelerate) forwards;
}

.anim-window-restore {
    animation: windowRestoreFromDock 1.2s var(--macos-ease-decelerate) forwards;
}

.anim-window-fullscreen {
    animation: windowFullscreen 1.0s var(--macos-ease-spring) forwards;
}

.anim-window-exit-fullscreen {
    animation: windowExitFullscreen 1.0s var(--macos-ease-spring) forwards;
}

.anim-window-focus {
    animation: windowFocusPulse 1.5s var(--macos-ease-smooth);
}

.anim-icon-fade-in {
    animation: iconFadeInStagger 1.0s var(--macos-ease-decelerate) backwards;
}

.anim-icon-select {
    animation: iconSelect 1.0s var(--macos-ease-spring);
}

.anim-context-menu {
    animation: contextMenuAppear 1.0s var(--macos-ease-spring) forwards;
}

.anim-control-center {
    animation: controlCenterSlide 1.2s var(--macos-ease-spring) forwards;
}

.anim-module-stagger {
    animation: moduleStagger 1.0s var(--macos-ease-decelerate) backwards;
}

.anim-siri-orb {
    animation: siriOrbPulse 3s ease-in-out infinite;
}

.anim-siri-reveal {
    animation: siriInterfaceReveal 1.5s var(--macos-ease-spring) forwards;
}

.anim-drag-lift {
    animation: dragLift 1.0s var(--macos-ease-spring) forwards;
}

/* ========== 过渡效果类 ========== */
.transition-stable {
    transition: all 1.2s var(--macos-ease-spring);
    will-change: transform, opacity;
}

.transition-window {
    transition: transform 1.2s var(--macos-ease-spring),
                opacity 0.8s var(--macos-ease-smooth),
                width 1.0s var(--macos-ease-spring),
                height 1.0s var(--macos-ease-spring),
                left 1.0s var(--macos-ease-spring),
                top 1.0s var(--macos-ease-spring);
    will-change: transform, opacity, width, height, left, top;
}

.transition-minimize {
    transition: all 1.2s var(--macos-ease-accelerate);
    will-change: transform, opacity, clip-path;
}

.transition-dock {
    transition: transform 0.6s var(--macos-ease-spring),
                opacity 0.4s var(--macos-ease-smooth);
    will-change: transform, opacity;
}

.transition-menu {
    transition: opacity 0.6s var(--macos-ease-smooth),
                transform 0.6s var(--macos-ease-spring);
    will-change: opacity, transform;
}

/* ========== 窗口状态类 (防动画缺失) ========== */
.window-animating {
    pointer-events: none !important;
    user-select: none !important;
}

.window-animating iframe {
    pointer-events: none !important;
}

.window-dragging {
    cursor: grabbing !important;
    transition: none !important;
    will-change: left, top;
    z-index: 99999 !important;
}

.window-resizing {
    cursor: inherit !important;
    transition: none !important;
    will-change: width, height, left, top;
    z-index: 99999 !important;
}

.window-minimizing {
    pointer-events: none;
    transition: all 1.2s var(--macos-ease-accelerate);
    transform-origin: center bottom;
}

.window-restoring {
    pointer-events: none;
    transition: all 1.2s var(--macos-ease-decelerate);
    transform-origin: center bottom;
}

/* 防止动画冲突 */
.window-stable {
    transition: box-shadow 0.3s var(--macos-ease-smooth);
}

/* ========== GPU加速与性能优化 ========== */
.gpu-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

.contain-layout {
    contain: layout style paint;
}

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

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

/* 减少动画偏好支持 */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 高DPI屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .window, .dock-panel, .menu-bar {
        transform: translateZ(0);
    }
}