/* 全局样式 */
:root {
    --primary: #165DFF;
    --secondary: #7B61FF;
    --dark: #0f172a;
}

body {
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--dark);
    color: #ffffff;
    overflow-x: hidden;
}

/* 导航栏样式 */
#navbar {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

#navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nav-link {
    position: relative;
    transition: all 0.3s ease;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

/* 服务卡片样式 */
.service-card {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid rgba(22, 93, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(to right, var(--primary), var(--secondary));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: rgba(22, 93, 255, 0.3);
    box-shadow: 0 20px 40px rgba(22, 93, 255, 0.1);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-card:hover .w-16 {
    transform: scale(1.1);
}

/* 案例卡片样式 */
.case-card {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.case-card img {
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.case-card:hover img {
    transform: scale(1.1);
}

.case-card:hover .absolute {
    opacity: 1;
}

.case-card:hover .transform {
    transform: translateY(0);
}

/* 新闻卡片样式 */
.news-card {
    transition: all 0.3s ease;
}

.news-card:hover {
    transform: translateY(-4px);
}

.news-card h2:hover {
    color: var(--primary);
}

/* 团队卡片样式 */
.team-card {
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.team-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(22, 93, 255, 0.2);
}

.team-card img {
    transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.team-card:hover img {
    transform: scale(1.05);
}

/* 按钮样式 */
.btn-primary {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-primary:hover::before {
    left: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(22, 93, 255, 0.4);
}

.btn-secondary {
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(22, 93, 255, 0.3);
}

/* FAQ样式 */
.faq-toggle {
    cursor: pointer;
    transition: all 0.3s ease;
}

.faq-toggle:hover {
    background: rgba(30, 41, 59, 0.8);
}

.faq-content {
    transition: all 0.3s ease;
}

.faq-toggle.active i {
    transform: rotate(180deg);
}

/* 表单样式 */
input,
textarea {
    transition: all 0.3s ease;
}

input:focus,
textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(22, 93, 255, 0.1);
}

/* 返回顶部按钮 */
#back-to-top {
    transition: all 0.3s ease;
}

#back-to-top.show {
    opacity: 1;
    visibility: visible;
}

#back-to-top:hover {
    transform: translateY(-4px);
    background: var(--secondary);
}

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

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

/* 数据统计动画 */
.counter {
    display: inline-block;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .service-card {
        padding: 1.5rem;
    }
    
    .case-card img {
        height: 48px;
    }
    
    .news-card {
        padding: 1.5rem;
    }
    
    .team-card img {
        height: 64px;
    }
}

@media (max-width: 640px) {
    #navbar {
        background: rgba(15, 23, 42, 0.95);
    }
    
    .service-card {
        padding: 1.25rem;
    }
    
    .case-card img {
        height: 40px;
    }
    
    .news-card {
        padding: 1.25rem;
    }
    
    .team-card img {
        height: 56px;
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(22, 93, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 渐变文字 */
.text-gradient {
    background: linear-gradient(to right, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 渐变背景 */
.bg-gradient-primary {
    background: linear-gradient(to right, var(--primary), var(--secondary));
}

.bg-gradient-secondary {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: rgba(30, 41, 59, 0.5);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(to bottom, var(--primary), var(--secondary));
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(to bottom, var(--secondary), var(--primary));
}

/* 图片懒加载 */
img.lazy {
    filter: blur(5px);
    transition: filter 0.3s ease;
}

img.lazy.loaded {
    filter: blur(0);
}

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

/* 选择文本样式 */
::selection {
    background: rgba(22, 93, 255, 0.3);
    color: #ffffff;
}

::-moz-selection {
    background: rgba(22, 93, 255, 0.3);
    color: #ffffff;
}

/* 焦点样式 */
*:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

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

.pulse {
    animation: pulse 2s infinite;
}

/* 工具类 */
.text-shadow {
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.backdrop-blur {
    backdrop-filter: blur(10px);
}

.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* 响应式断点 */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem !important;
    }
    
    h2 {
        font-size: 2rem !important;
    }
    
    h3 {
        font-size: 1.5rem !important;
    }
}

@media (max-width: 640px) {
    h1 {
        font-size: 2rem !important;
    }
    
    h2 {
        font-size: 1.75rem !important;
    }
    
    h3 {
        font-size: 1.25rem !important;
    }
}