/* EricSourcing Base Styles */
:root {
    --primary-color: #4361ee;
    --primary-dark: #3a56d4;
    --secondary-color: #7209b7;
    --accent-color: #f72585;
    --success-color: #4cc9f0;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --gray-light: #f8f9fa;
    --gray-medium: #e9ecef;
    --gray-dark: #6c757d;

    --gradient-primary: linear-gradient(135deg, #4361ee 0%, #3a0ca3 100%);
    --gradient-secondary: linear-gradient(135deg, #7209b7 0%, #3a0ca3 100%);
    --gradient-accent: linear-gradient(135deg, #f72585 0%, #7209b7 100%);

    --shadow-sm: 0 2px 10px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 5px 20px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--dark-color);
    line-height: 1.7;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 布局容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 主要内容区域 */
.main-content {
    flex: 1;
    padding-top: 80px; /* 为固定导航栏留出空间 */
    position: relative;
}

/* 通用文本样式 */
.text-gradient {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-shadow {
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

/* 按钮基础样式 */
.btn {
    border-radius: var(--radius-sm);
    font-weight: 500;
    padding: 0.5rem 1.5rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

/* 卡片基础样式 */
.card {
    border: none;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    overflow: hidden;
    background: white;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* 实用工具类 */
.section-padding {
    padding: 5rem 0;
}

@media (max-width: 768px) {
    .section-padding {
        padding: 3rem 0;
    }
}

.section-title {
    position: relative;
    padding-bottom: 1rem;
    margin-bottom: 2rem;
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
}

/* 动画 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
    100% { transform: translateY(0px); }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

.floating {
    animation: float 3s ease-in-out infinite;
}

/* 分隔线 */
.divider {
    height: 1px;
    background: linear-gradient(to right, transparent, var(--primary-color), transparent);
    margin: 2rem 0;
}

/* 图片效果 */
.img-hover-zoom {
    overflow: hidden;
    border-radius: var(--radius-md);
}

.img-hover-zoom img {
    transition: transform 0.5s ease;
    width: 100%;
    height: auto;
}

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

/* 自定义滚动条 */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 5px;
    transition: var(--transition);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-dark);
}

/* RTL支持 */
[dir="rtl"] {
    text-align: right;
}

[dir="rtl"] .text-start {
    text-align: right !important;
}

[dir="rtl"] .text-end {
    text-align: left !important;
}

[dir="rtl"] .me-2 {
    margin-left: 0.5rem !important;
    margin-right: 0 !important;
}

[dir="rtl"] .ms-2 {
    margin-right: 0.5rem !important;
    margin-left: 0 !important;
}

[dir="rtl"] .float-start {
    float: right !important;
}

[dir="rtl"] .float-end {
    float: left !important;
}

/* 阿拉伯语字体优化 */
html[lang="ar"] body {
    font-family: 'Segoe UI', 'Tahoma', 'Arial', sans-serif;
    line-height: 1.8;
}

html[lang="ar"] h1,
html[lang="ar"] h2,
html[lang="ar"] h3,
html[lang="ar"] h4,
html[lang="ar"] h5,
html[lang="ar"] h6 {
    font-family: 'Segoe UI', 'Tahoma', 'Arial', sans-serif;
}

/* 响应式断点 */
@media (max-width: 576px) {
    .container {
        padding: 0 12px;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}