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

/* 渐变流光效果 */
@keyframes gradientFlow {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.gradient-animate {
    background-size: 200% 200%;
    animation: gradientFlow 8s ease infinite;
}

/* 淡入上浮动画 */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in-up { animation: fadeInUp 0.6s ease-out forwards; }

/* 淡入 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in { animation: fadeIn 0.5s ease-out forwards; }

/* 滑入动画 */
@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-50px); }
    to { opacity: 1; transform: translateX(0); }
}

.slide-in-left { animation: slideInLeft 0.6s ease-out forwards; }

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(50px); }
    to { opacity: 1; transform: translateX(0); }
}

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

/* 缩放出现 */
@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

.scale-in { animation: scaleIn 0.5s ease-out forwards; }

/* 边框光效 */
@keyframes borderGlow {
    0%, 100% { box-shadow: 0 0 20px rgba(0, 188, 212, 0.3); }
    50% { box-shadow: 0 0 40px rgba(0, 188, 212, 0.5); }
}

.border-glow { animation: borderGlow 2s ease-in-out infinite; }

/* 旋转动画 */
@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.rotate { animation: rotate 20s linear infinite; }

/* 浮动动画 */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

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

/* ============================================
   Scroll-triggered Animations
   ============================================ */

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll.animate-in {
    opacity: 1;
    transform: translateY(0);
}

/* 延迟动画 */
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }
.delay-4 { transition-delay: 0.4s; }
.delay-5 { transition-delay: 0.5s; }
.delay-6 { transition-delay: 0.6s; }

/* 左侧滑入 */
.slide-from-left {
    opacity: 0;
    transform: translateX(-50px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* 右侧滑入 */
.slide-from-right {
    opacity: 0;
    transform: translateX(50px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* 底部滑入 */
.slide-from-bottom {
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* 缩放出现 */
.scale-appear {
    opacity: 0;
    transform: scale(0.8);
    transition: opacity 0.5s ease-out, transform 0.5s ease-out;
}

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

/* ============================================
   Hero Specific Animations
   ============================================ */

.hero-title { animation: fadeInUp 0.8s ease-out forwards; }
.hero-subtitle { animation: fadeInUp 0.8s ease-out 0.2s forwards; opacity: 0; }
.hero-cta { animation: fadeInUp 0.8s ease-out 0.4s forwards; opacity: 0; }
.hero-stats { animation: fadeInUp 0.8s ease-out 0.6s forwards; opacity: 0; }

/* ============================================
   Card Hover Effects
   ============================================ */

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

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 188, 212, 0.15);
}

.hover-glow {
    transition: box-shadow 0.3s ease, border-color 0.3s ease;
}

.hover-glow:hover {
    box-shadow: 0 0 30px rgba(0, 188, 212, 0.3);
    border-color: var(--accent-cyan);
}

/* ============================================
   Loading States
   ============================================ */

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

.loading-shimmer {
    background: linear-gradient(
        90deg,
        rgba(255, 255, 255, 0.05) 25%,
        rgba(255, 255, 255, 0.1) 50%,
        rgba(255, 255, 255, 0.05) 75%
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
}

/* ============================================
   Number Counter Animation
   ============================================ */

@keyframes countUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.count-animation { animation: countUp 0.5s ease-out forwards; }

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

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
}

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

/* ============================================
   Responsive Animation Adjustments
   ============================================ */

@media (max-width: 768px) {
    .animate-on-scroll { transform: translateY(20px); }
    .slide-from-left, .slide-from-right { transform: translateY(30px); }
    .hero-title, .hero-subtitle, .hero-cta, .hero-stats { animation-duration: 0.5s; }
}