/* Bootstrap 5 定制样式 */

:root {
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --secondary-color: #10b981;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
}

/* 全局样式 */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
}

/* 导航栏样式 */
.navbar {
    transition: all 0.3s ease;
}

.navbar-brand img {
    transition: transform 0.3s ease;
}

.navbar-brand:hover img {
    transform: scale(1.05);
}

.nav-link {
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

.nav-link.active {
    color: var(--primary-color) !important;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-color);
}

/* 主横幅区域 */
.hero-banner {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    background-size: 200% 200%;
    animation: gradientShift 15s ease infinite;
    position: relative;
    overflow: hidden;
}

.hero-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="100" height="100" patternUnits="userSpaceOnUse"><path d="M 100 0 L 0 0 0 100" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
    z-index: 0;
}

.hero-banner > .container {
    position: relative;
    z-index: 1;
}

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

.hero-banner h1 {
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    animation: fadeInUp 0.8s ease;
}

.hero-banner .lead {
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-banner .badge {
    animation: fadeInUp 0.8s ease 0.4s both;
    backdrop-filter: blur(10px);
}

.hero-banner .btn {
    animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-banner img {
    animation: fadeInRight 1s ease;
    transition: transform 0.3s ease;
}

.hero-banner img:hover {
    transform: scale(1.02);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* 价格卡片样式 */
.pricing-card {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-top: 4px solid transparent !important;
    position: relative;
    overflow: hidden;
}

.pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(37, 99, 235, 0.15) !important;
    border-color: var(--primary-color) !important;
}

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

.pricing-card .card-body {
    position: relative;
    z-index: 1;
}

/* 按钮样式 */
.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    border: none;
    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, 0.3), transparent);
    transition: left 0.5s ease;
}

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

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--primary-color));
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.4);
}

.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: #ffffff;
    transform: translateY(-2px);
}

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

.card:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1) !important;
}

.bg-gradient-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%) !important;
}

/* 特性项样式 */
.feature-item {
    padding: 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: #f8f9fa;
    transform: translateX(8px);
}

.feature-item i {
    font-size: 1.5rem;
}

/* 页脚样式 */
footer a {
    transition: color 0.3s ease;
}

footer a:hover {
    color: #ffffff !important;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero-banner {
        padding: 3rem 0 !important;
    }
    
    .hero-banner h1 {
        font-size: 2rem;
    }
    
    .hero-banner .lead {
        font-size: 1rem;
    }
    
    .display-5 {
        font-size: 2rem;
    }
}

/* 工具类 */
.text-white-50 {
    color: rgba(255, 255, 255, 0.5) !important;
}

.shadow-sm {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075) !important;
}

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

/* 链接样式 */
a {
    transition: all 0.3s ease;
}

/* 列表样式优化 */
.list-unstyled li {
    line-height: 1.8;
}

/* 价格显示 */
.h2.fw-bold.text-primary {
    font-size: 2.5rem;
    line-height: 1.2;
}