/* Tailwind 配置扩展 - 使用CSS变量 */
:root {
    --color-primary: #1e40af;
    --color-secondary: #0ea5e9;
    --color-accent: #06b6d4;
    --color-dark: #0f172a;
    --color-bg-light: #f8fafc;

    /* Modern Design Tokens */
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --shadow-soft: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
    --shadow-premium: 0 20px 50px -12px rgba(0, 0, 0, 0.1);
}

/* 自定义颜色类 */
.text-primary {
    color: var(--color-primary);
}

.bg-primary {
    background-color: var(--color-primary);
}

.border-primary {
    border-color: var(--color-primary);
}

.hover\:text-primary:hover {
    color: var(--color-primary);
}

.text-secondary {
    color: var(--color-secondary);
}

.bg-secondary {
    background-color: var(--color-secondary);
}

.border-secondary {
    border-color: var(--color-secondary);
}

.text-accent {
    color: var(--color-accent);
}

.bg-accent {
    background-color: var(--color-accent);
}

.text-dark {
    color: var(--color-dark);
}

.bg-dark {
    background-color: var(--color-dark);
}

/* 全局样式 */
body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    scroll-behavior: smooth;
    background-color: var(--color-bg-light);
    color: #334155;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f5f9;
}

::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* 自定义工具类 */
.bg-gradient-premium {
    background: linear-gradient(135deg, #1e40af 0%, #0f172a 100%);
}

.bg-gradient-soft {
    background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
}

.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.glass-dark {
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.premium-shadow {
    box-shadow: var(--shadow-premium);
}

.soft-shadow {
    box-shadow: var(--shadow-soft);
}

.rounded-premium {
    border-radius: var(--radius-xl);
}

.rounded-full-premium {
    border-radius: 9999px;
}

/* 标签样式 */
.tag-pill {
    display: inline-flex;
    align-items: center;
    padding: 0.375rem 1rem;
    background: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
    color: #475569;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.tag-pill i {
    color: var(--color-secondary);
    margin-right: 0.5rem;
}

.tag-pill:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    border-color: var(--color-secondary);
}

/* 动效 */
.hover-lift {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-lift:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-premium);
}

.animate-fade-in-up {
    animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 移动端菜单 */
.mobile-menu-active {
    overflow: hidden;
}

/* 产品详情卡片 */
.feature-card-premium {
    background: white;
    padding: 2.5rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-soft);
    border: 1px solid #f1f5f9;
    transition: all 0.4s ease;
}

.feature-card-premium:hover {
    border-color: var(--color-secondary);
    transform: translateY(-5px);
}

/* 导航相关 */
header.scrolled {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.05);
}

#mobile-product-menu.active {
    opacity: 1;
    visibility: visible;
    max-height: 500px;
}

/* 悬浮按钮样式 */
.float-buttons {
    position: fixed;
    right: 2rem;
    bottom: 2rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.float-btn {
    width: 3rem;
    height: 3rem;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-primary);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    border: none;
    outline: none;
}

.float-btn:hover {
    transform: translateY(-4px);
    background: var(--color-primary);
    color: white;
    box-shadow: 0 8px 24px rgba(30, 64, 175, 0.2);
}

.float-btn-hidden {
    opacity: 0;
    visibility: hidden;
    transform: scale(0.8) translateY(20px);
}

.float-btn-visible {
    opacity: 1;
    visibility: visible;
    transform: scale(1) translateY(0);
}

.float-tooltip {
    position: absolute;
    right: 4rem;
    background: #0f172a;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transform: translateX(10px);
    transition: all 0.3s ease;
    pointer-events: none;
}

.float-tooltip::after {
    content: '';
    position: absolute;
    right: -4px;
    top: 50%;
    transform: translateY(-50%) rotate(45deg);
    width: 8px;
    height: 8px;
    background: #0f172a;
}

.float-btn:hover .float-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
}

.bg-gradient-tech {
    background: linear-gradient(135deg, #1e40af 0%, #0ea5e9 100%);
}