/* ============================================
   动画效果样式文件
   ============================================ */

/* ============================================
   Scroll Animations - Intersection Observer
   ============================================ */

/* Fade In Up Animation */
.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Fade In Left Animation */
.fade-in-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Fade In Right Animation */
.fade-in-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Scale In Animation */
.scale-in {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* Rotate In Animation */
.rotate-in {
    opacity: 0;
    transform: rotate(-10deg) scale(0.9);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.rotate-in.visible {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

/* Stagger Animation for Grid Items */
.stagger-item {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger-item.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Delay variations for stagger effect */
.stagger-item:nth-child(1) { transition-delay: 0.1s; }
.stagger-item:nth-child(2) { transition-delay: 0.2s; }
.stagger-item:nth-child(3) { transition-delay: 0.3s; }
.stagger-item:nth-child(4) { transition-delay: 0.4s; }
.stagger-item:nth-child(5) { transition-delay: 0.5s; }
.stagger-item:nth-child(6) { transition-delay: 0.6s; }

/* ============================================
   Hover Animations
   ============================================ */

/* Pulse Effect */
.pulse-hover {
    animation: pulse 0.6s ease;
}

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

/* Glow Effect */
.glow-hover {
    animation: glow 0.6s ease;
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(102, 126, 234, 0.5);
    }
    50% {
        box-shadow: 0 0 20px rgba(102, 126, 234, 0.8), 0 0 30px rgba(102, 126, 234, 0.6);
    }
}

/* Shake Effect */
.shake-hover {
    animation: shake 0.5s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* ============================================
   Loading Animations
   ============================================ */

/* Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid rgba(102, 126, 234, 0.2);
    border-top: 4px solid #667EEA;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, rgba(26, 35, 50, 0.6) 25%, rgba(26, 35, 50, 0.8) 50%, rgba(26, 35, 50, 0.6) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s ease-in-out infinite;
}

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

/* ============================================
   Text Animations
   ============================================ */

/* Typing Effect */
.typing-text {
    overflow: hidden;
    border-right: 3px solid #00D9FF;
    animation: typing 3.5s 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: #00D9FF; }
}

/* Gradient Flow */
.gradient-flow {
    background: linear-gradient(90deg, #667EEA, #764BA2, #00D9FF, #667EEA);
    background-size: 300% 100%;
    animation: gradient-flow 3s ease infinite;
}

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

/* ============================================
   Special Effects
   ============================================ */

/* Ripple Effect */
.ripple {
    position: relative;
    overflow: hidden;
}

.ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.ripple:active::after {
    width: 200px;
    height: 200px;
}

/* Floating Effect */
.float {
    animation: float 3s ease-in-out infinite;
}

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

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

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* Slide In */
.slide-in-top {
    animation: slide-in-top 0.5s ease;
}

@keyframes slide-in-top {
    from {
        transform: translateY(-100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.slide-in-bottom {
    animation: slide-in-bottom 0.5s ease;
}

@keyframes slide-in-bottom {
    from {
        transform: translateY(100%);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ============================================
   Page Transition Animations
   ============================================ */

/* Fade Transition */
.page-fade-in {
    animation: page-fade-in 0.6s ease;
}

@keyframes page-fade-in {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Zoom Transition */
.page-zoom-in {
    animation: page-zoom-in 0.6s ease;
}

@keyframes page-zoom-in {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ============================================
   Navigation Animations
   ============================================ */

/* Menu Toggle Animation */
.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Menu Slide Animation */
.nav-menu-slide {
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.nav-menu-slide.active {
    transform: translateX(0);
}

/* ============================================
   Card Flip Animation
   ============================================ */

.card-flip {
    perspective: 1000px;
}

.card-flip-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.card-flip:hover .card-flip-inner {
    transform: rotateY(180deg);
}

.card-flip-front,
.card-flip-back {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
}

.card-flip-back {
    transform: rotateY(180deg);
}

/* ============================================
   Button Animations
   ============================================ */

/* Button Click Effect */
.btn-click {
    animation: btn-click 0.3s ease;
}

@keyframes btn-click {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(0.95); }
}

/* Button Hover Shine */
.btn-shine {
    position: relative;
    overflow: hidden;
}

.btn-shine::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        to right,
        rgba(255, 255, 255, 0) 0%,
        rgba(255, 255, 255, 0.3) 50%,
        rgba(255, 255, 255, 0) 100%
    );
    transform: rotate(45deg) translateX(-100%);
    transition: transform 0.6s;
}

.btn-shine:hover::before {
    transform: rotate(45deg) translateX(100%);
}

/* ============================================
   Icon Animations
   ============================================ */

/* Icon Rotate */
.icon-rotate {
    transition: transform 0.3s ease;
}

.icon-rotate:hover {
    transform: rotate(360deg);
}

/* Icon Scale */
.icon-scale {
    transition: transform 0.3s ease;
}

.icon-scale:hover {
    transform: scale(1.2);
}

/* Icon Bounce */
.icon-bounce {
    animation: icon-bounce 0.5s ease;
}

@keyframes icon-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}