/* assets/css/style.css - 主样式文件 */

:root {
    /* FE Credit 主题色 */
    --fe-primary: #0066B3;
    --fe-secondary: #FF6B00;
    --fe-success: #28a745;
    --fe-warning: #ffc107;
    --fe-danger: #dc3545;
    --fe-light: #f8f9fa;
    --fe-dark: #212529;
    --fe-gray: #6c757d;
    
    /* 渐变 */
    --fe-gradient-primary: linear-gradient(135deg, #0066B3 0%, #0088ff 100%);
    --fe-gradient-orange: linear-gradient(135deg, #FF6B00 0%, #ff8c42 100%);
    
    /* 阴影 */
    --fe-shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --fe-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --fe-shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    
    /* 圆角 */
    --fe-border-radius: 0.5rem;
    --fe-border-radius-lg: 1rem;
    --fe-border-radius-xl: 2rem;
    
    /* 过渡 */
    --fe-transition: all 0.3s ease;
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

/* 文本颜色 */
.text-primary { color: var(--fe-primary) !important; }
.text-orange { color: var(--fe-secondary) !important; }

/* 背景颜色 */
.bg-primary { background-color: var(--fe-primary) !important; }
.bg-orange { background-color: var(--fe-secondary) !important; }

/* 渐变背景 */
.bg-gradient-primary { background: var(--fe-gradient-primary) !important; }
.bg-gradient-orange { background: var(--fe-gradient-orange) !important; }

/* 按钮样式 */
.btn-primary {
    background-color: var(--fe-primary);
    border-color: var(--fe-primary);
}
.btn-primary:hover {
    background-color: #005aa3;
    border-color: #005aa3;
}

.fe-btn-primary {
    background: var(--fe-gradient-primary);
    border: none;
    color: white;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--fe-border-radius);
    transition: var(--fe-transition);
}
.fe-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--fe-shadow);
    color: white;
}

.fe-btn-orange {
    background: var(--fe-gradient-orange);
    border: none;
    color: white;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--fe-border-radius);
    transition: var(--fe-transition);
}
.fe-btn-orange:hover {
    transform: translateY(-2px);
    box-shadow: var(--fe-shadow);
    color: white;
}

/* 顶部通知栏 */
.fe-top-bar {
    font-size: 0.875rem;
}
.fe-top-bar a:hover {
    text-decoration: underline !important;
}

/* 导航栏 */
.navbar {
    padding: 1rem 0;
    transition: var(--fe-transition);
}
.navbar.scrolled {
    padding: 0.5rem 0;
    box-shadow: var(--fe-shadow);
}
.navbar-nav .nav-link {
    font-weight: 500;
    color: #555;
    padding: 0.5rem 1rem;
    border-radius: var(--fe-border-radius);
    transition: var(--fe-transition);
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--fe-primary);
    background-color: rgba(0, 102, 179, 0.1);
}
.navbar-nav .dropdown-menu {
    border: none;
    box-shadow: var(--fe-shadow);
    border-radius: var(--fe-border-radius);
    padding: 0.5rem;
}
.navbar-nav .dropdown-item {
    padding: 0.75rem 1rem;
    border-radius: 0.25rem;
    transition: var(--fe-transition);
}
.navbar-nav .dropdown-item:hover {
    background-color: rgba(0, 102, 179, 0.1);
    color: var(--fe-primary);
}

/* Hero 区域 */
.fe-hero-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, #f8fbff 0%, #e6f2ff 100%);
    position: relative;
    overflow: hidden;
}
.min-vh-70 {
    min-height: 70vh;
}
.fe-hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.2;
}
.fe-badge {
    font-size: 0.875rem;
    font-weight: 600;
}

/* 图标圆圈 */
.fe-icon-circle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
}
.fe-icon-circle-sm {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 60px;
    height: 60px;
}
.fe-icon-circle-lg {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100px;
    height: 100px;
}

/* Hero 背景元素 */
.fe-hero-bg-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}
.fe-hero-bg-elements .circle {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(0, 102, 179, 0.1) 0%, rgba(0, 102, 179, 0.05) 100%);
}
.circle-1 {
    width: 400px;
    height: 400px;
    top: -200px;
    right: -100px;
}
.circle-2 {
    width: 300px;
    height: 300px;
    bottom: -150px;
    left: -100px;
}
.circle-3 {
    width: 200px;
    height: 200px;
    top: 50%;
    right: 10%;
}

/* 浮动卡片 */
.fe-floating-card {
    animation: float 6s ease-in-out infinite;
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* 应用推广卡片 */
.fe-app-promo {
    position: relative;
    overflow: hidden;
}
.fe-app-promo::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    animation: shine 3s infinite;
}
@keyframes shine {
    0% { transform: translateX(-100%) translateY(-100%) rotate(45deg); }
    100% { transform: translateX(100%) translateY(100%) rotate(45deg); }
}

/* 特性卡片 */
.fe-feature-card {
    transition: var(--fe-transition);
    border: 1px solid transparent !important;
}
.fe-feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--fe-shadow-lg) !important;
    border-color: rgba(0, 102, 179, 0.2) !important;
}

/* 成就卡片 */
.fe-achievement-card {
    transition: var(--fe-transition);
}
.fe-achievement-card:hover {
    transform: scale(1.05);
}
.fe-achievement-icon {
    transition: var(--fe-transition);
}
.fe-achievement-card:hover .fe-achievement-icon {
    background: rgba(0, 102, 179, 0.2) !important;
    transform: rotate(360deg);
}

/* 产品卡片 */
.fe-product-card {
    transition: var(--fe-transition);
    border: 1px solid rgba(0, 0, 0, 0.1) !important;
}
.fe-product-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--fe-shadow-lg) !important;
}
.fe-product-card .card-header {
    position: relative;
    overflow: hidden;
}
.fe-product-card .card-header::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 50%;
    width: 40px;
    height: 40px;
    background: white;
    transform: translateX(-50%) rotate(45deg);
}

/* 新闻卡片 */
.fe-news-card {
    transition: var(--fe-transition);
}
.fe-news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--fe-shadow) !important;
}
.fe-news-card .card-img-top {
    transition: var(--fe-transition);
}
.fe-news-card:hover .card-img-top {
    transform: scale(1.05);
}

/* 页脚 */
.fe-footer {
    background: linear-gradient(135deg, #1a3c5f 0%, #2c5282 100%);
    color: white;
}
.fe-footer a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--fe-transition);
}
.fe-footer a:hover {
    color: white;
    padding-left: 5px;
}
.fe-footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    transition: var(--fe-transition);
}
.fe-footer-social a:hover {
    background: var(--fe-primary);
    transform: translateY(-3px);
}

/* 工具提示 */
.fe-tooltip {
    position: relative;
    cursor: help;
}
.fe-tooltip-text {
    visibility: hidden;
    width: 200px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
}
.fe-tooltip:hover .fe-tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* 加载动画 */
.fe-spinner {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    border: 0.25rem solid rgba(0, 102, 179, 0.3);
    border-radius: 50%;
    border-top-color: var(--fe-primary);
    animation: spin 1s linear infinite;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* 表单样式 */
.form-control, .form-select {
    padding: 0.75rem 1rem;
    border: 1px solid #dee2e6;
    border-radius: var(--fe-border-radius);
    transition: var(--fe-transition);
}
.form-control:focus, .form-select:focus {
    border-color: var(--fe-primary);
    box-shadow: 0 0 0 0.25rem rgba(0, 102, 179, 0.25);
}
.input-group-text {
    background-color: #f8f9fa;
    border: 1px solid #dee2e6;
}

/* 模态框 */
.modal-content {
    border-radius: var(--fe-border-radius-lg);
    border: none;
}
.modal-header {
    border-radius: var(--fe-border-radius-lg) var(--fe-border-radius-lg) 0 0;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .fe-hero-content h1 {
        font-size: 2.5rem;
    }
    .min-vh-70 {
        min-height: auto;
        padding: 3rem 0;
    }
    .fe-icon-circle-lg {
        width: 80px;
        height: 80px;
    }
    .display-5 {
        font-size: 2rem;
    }
    .fe-floating-card {
        position: relative !important;
        margin: 1rem !important;
        max-width: 100% !important;
    }
}

@media (max-width: 576px) {
    .fe-hero-content h1 {
        font-size: 2rem;
    }
    .btn-lg {
        padding: 0.5rem 1rem;
        font-size: 1rem;
    }
}

/* 打印样式 */
@media print {
    .fe-top-bar,
    .navbar,
    .fe-footer,
    .btn,
    .modal,
    .fe-hero-bg-elements {
        display: none !important;
    }
}