/* ========================================
   Enhanced UI Styles for Index Page
   美化增强样式 - 不修改接口
   ======================================== */

/* 渐变背景和动画 */
.hero-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    animation: backgroundMove 20s linear infinite;
}

@keyframes backgroundMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(50px, 50px); }
}

/* 卡片悬停效果增强 */
.counter-box {
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border-radius: 20px;
    background: linear-gradient(145deg, #ffffff, #f0f0f0);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    position: relative;
    overflow: hidden;
}

.counter-box::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(51, 182, 255, 0.1), transparent);
    transform: rotate(45deg);
    transition: all 0.6s;
}

.counter-box:hover::before {
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

.counter-box:hover {
    transform: translateY(-15px) scale(1.05);
    box-shadow: 0 20px 50px rgba(51, 182, 255, 0.3);
}

.counter-box .icon {
    transition: all 0.4s ease;
}

.counter-box:hover .icon {
    transform: rotateY(360deg);
}

/* 服务卡片美化 */
.service-item {
    border-radius: 20px;
    background: #ffffff;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
    border: 2px solid transparent;
}

.service-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.5s;
}

.service-item:hover::after {
    left: 100%;
}

.service-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(51, 182, 255, 0.2);
    border-color: #33B6FF;
}

.service-icon {
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.service-item:hover .service-icon {
    transform: scale(1.2) rotate(10deg);
}

/* 按钮增强效果 */
.theme-btn {
    position: relative;
    overflow: hidden;
    border-radius: 50px;
    transition: all 0.4s ease;
    box-shadow: 0 5px 15px rgba(51, 182, 255, 0.3);
}

.theme-btn::before {
    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, height 0.6s;
}

.theme-btn:hover::before {
    width: 300px;
    height: 300px;
}

.theme-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 8px 25px rgba(51, 182, 255, 0.5);
}

.theme-btn i {
    transition: transform 0.3s ease;
}

.theme-btn:hover i {
    transform: translateX(5px);
}

/* 价格卡片美化 */
.pricing-item {
    border-radius: 25px;
    background: #ffffff;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    transition: all 0.5s ease;
    position: relative;
    overflow: hidden;
}

.pricing-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb);
    background-size: 200% 100%;
    animation: gradientMove 3s linear infinite;
}

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

.pricing-item:hover {
    transform: translateY(-15px) scale(1.02);
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.25);
}

.pricing-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px;
    border-radius: 20px 20px 0 0;
}

.pricing-amount {
    font-size: 3em;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 开发者卡片美化 */
.process-item {
    border-radius: 20px;
    background: #ffffff;
    padding: 30px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    transition: all 0.4s ease;
    position: relative;
}

.process-item::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    padding: 2px;
    background: linear-gradient(135deg, #667eea, #764ba2, #f093fb);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.4s ease;
}

.process-item:hover::before {
    opacity: 1;
}

.process-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 45px rgba(102, 126, 234, 0.2);
}

.process-item .icon img {
    border-radius: 50%;
    border: 4px solid transparent;
    transition: all 0.4s ease;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.process-item:hover .icon img {
    border-color: #667eea;
    transform: scale(1.1);
    box-shadow: 0 8px 30px rgba(102, 126, 234, 0.3);
}

/* 标题动画效果 */
.site-title {
    position: relative;
    display: inline-block;
}

.site-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 4px;
    background: linear-gradient(90deg, #667eea, #764ba2);
    border-radius: 2px;
    transition: width 0.6s ease;
}

.site-title:hover::after {
    width: 100%;
}

/* 标签美化 */
.site-title-tagline {
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1), rgba(118, 75, 162, 0.1));
    border: 2px solid #667eea;
    border-radius: 50px;
    padding: 8px 20px;
    display: inline-block;
    font-weight: 600;
    color: #667eea;
    transition: all 0.3s ease;
}

.site-title-tagline:hover {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: white;
    transform: scale(1.05);
}

.site-title-tagline.light {
    border-color: rgba(255, 255, 255, 0.5);
    color: white;
    background: rgba(255, 255, 255, 0.1);
}

.site-title-tagline.light:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: white;
}

/* 数字计数器动画 */
.counter {
    font-weight: 700;
    font-size: 2.5em;
    background: linear-gradient(135deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 响应式优化 */
@media (max-width: 768px) {
    .counter-box:hover {
        transform: translateY(-10px) scale(1.02);
    }

    .service-item:hover,
    .pricing-item:hover,
    .process-item:hover {
        transform: translateY(-5px);
    }
}

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

.wow {
    animation-duration: 0.8s;
}

/* 渐变文字效果 */
.gradient-text {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 玻璃态效果 */
.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.pulse-animation {
    animation: pulse 2s infinite;
}

/* 图标旋转效果 */
@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.rotate-on-hover:hover {
    animation: rotate 0.6s ease-in-out;
}

/* 边框渐变效果 */
.gradient-border {
    position: relative;
    border-radius: 20px;
    background: white;
    padding: 2px;
}

.gradient-border::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 20px;
    padding: 2px;
    background: linear-gradient(135deg, #667eea, #764ba2, #f093fb);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
}

/* 阴影增强 */
.shadow-elegant {
    box-shadow:
        0 2px 4px rgba(0, 0, 0, 0.05),
        0 4px 8px rgba(0, 0, 0, 0.05),
        0 8px 16px rgba(0, 0, 0, 0.05),
        0 16px 32px rgba(0, 0, 0, 0.05);
}

/* 悬浮效果组合 */
.hover-lift {
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.hover-lift:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 24px rgba(102, 126, 234, 0.2);
}

/* 渐变背景动画 */
.animated-gradient {
    background: linear-gradient(-45deg, #667eea, #764ba2, #f093fb, #4facfe);
    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%; }
}

/* 光泽效果 */
.shine-effect {
    position: relative;
    overflow: hidden;
}

.shine-effect::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s;
}

.shine-effect:hover::before {
    left: 100%;
}