/* 动画CSS文件 */

/* 页面加载动画 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

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

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

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* 粒子动画 */
@keyframes float {
    0%, 100% {
        transform: translateY(0px) rotate(0deg);
    }
    50% {
        transform: translateY(-20px) rotate(180deg);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 0.3;
        transform: scale(1);
    }
    50% {
        opacity: 0.8;
        transform: scale(1.2);
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(99, 102, 241, 0.6);
    }
}

/* 滚动动画类 */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

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

.animate-on-scroll.animate-delay-1 {
    transition-delay: 0.1s;
}

.animate-on-scroll.animate-delay-2 {
    transition-delay: 0.2s;
}

.animate-on-scroll.animate-delay-3 {
    transition-delay: 0.3s;
}

.animate-on-scroll.animate-delay-4 {
    transition-delay: 0.4s;
}

/* 游戏卡片悬停动画 */
.game-card {
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.game-card:hover {
    transform: translateY(-10px) scale(1.02);
}

.game-card:hover .game-image {
    transform: scale(1.05);
    transition: transform 0.4s ease;
}

/* 按钮悬停动画 */
.cta-button {
    position: relative;
    overflow: hidden;
    transition: all 0.3s ease;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button.primary:hover {
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 35px rgba(99, 102, 241, 0.4);
}

.cta-button.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
    border-color: rgba(255, 255, 255, 0.3);
}

/* 导航栏动画 */
.navbar {
    transition: all 0.3s ease;
}

.navbar.scrolled {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

/* 滚动条动画 */
.scroll-arrow {
    animation: bounce 2s infinite;
}

/* 粒子背景动画 */
.particle {
    position: absolute;
    background: rgba(99, 102, 241, 0.6);
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
}

.particle:nth-child(odd) {
    animation-duration: 8s;
    background: rgba(139, 92, 246, 0.4);
}

.particle:nth-child(3n) {
    animation-duration: 10s;
    background: rgba(6, 182, 212, 0.5);
}

/* 加载动画 */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* 文字打印动画 */
.typewriter {
    overflow: hidden;
    border-right: 0.15em solid var(--accent-primary);
    white-space: nowrap;
    margin: 0 auto;
    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: var(--accent-primary); }
}

/* 游戏图标动画 */
.game-icon {
    transition: all 0.3s ease;
}

.game-card:hover .game-icon {
    transform: scale(1.2) rotate(10deg);
    animation: pulse 1s ease-in-out;
}

/* 表单动画 */
.form-group input,
.form-group textarea {
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(99, 102, 241, 0.2);
}

/* 响应式动画调整 */
@media (max-width: 768px) {
    .title-main {
        animation: fadeInUp 0.8s ease;
    }
    
    .title-sub {
        animation: fadeInUp 0.8s ease 0.2s both;
    }
    
    .hero-description {
        animation: fadeInUp 0.8s ease 0.4s both;
    }
    
    .hero-cta {
        animation: fadeInUp 0.8s ease 0.6s both;
    }
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 焦点动画 */
*:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* 链接动画 */
a {
    transition: color 0.3s ease;
}

/* 徽章动画 */
.game-status {
    animation: glow 2s ease-in-out infinite alternate;
}

/* 背景渐变动画 */
.hero-background {
    background: linear-gradient(-45deg, #0a0a0a, #1a1a2e, #16213e, #0f0f23);
    background-size: 400% 400%;
    animation: gradientShift 15s ease infinite;
}

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

.btn-link {
    animation: glow 2s ease-in-out infinite alternate;
}