/* style.css - ShoeCloud 项目主页样式 */
:root {
    --primary-green: #10b981;
    --light-green: #ecfdf5;
    --dark-gray: #1f2937;
    --medium-gray: #6b7280;
    --light-gray: #f9fafb;
    --white: #ffffff;
    --border-radius: 16px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.06);
    /* 关键：定义容器最大宽度，并留出舒适的边距 */
    --container-width: min(1200px, 90vw);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
    background-color: var(--white);
    overflow-x: hidden;
}

/* === 通用布局类 === */
.container {
    width: 100%;
    max-width: var(--container-width); /* 使用变量控制最大宽度 */
    margin: 0 auto;
    padding: 0 24px; /* 在屏幕缩小时保持内边距 */
}

.section {
    padding: 80px 0;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--dark-gray);
}

.highlight {
    color: var(--primary-green);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--medium-gray);
    text-align: center;
    max-width: 700px;
    margin: 0 auto 3rem;
    line-height: 1.7;
}

/* 内容卡片 - 确保其不贴边 */
.content-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 40px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
    border: 1px solid #f3f4f6;
}
.content-card h3 {
    margin-top: 1.8em;
    margin-bottom: 0.7em;
    font-size: 1.4rem;
    color: var(--dark-gray);
}
.content-card h3:first-child {
    margin-top: 0;
}
.content-card p, .content-card li {
    color: var(--medium-gray);
    margin-bottom: 0.8em;
}

/* === 导航栏 === */
.navbar {
    position: sticky;
    top: 0;
    background-color: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 20px 0;
    border-bottom: 1px solid #f3f4f6;
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark-gray);
    text-decoration: none;
}
.logo-icon {
    width: 40px;
    height: 40px;
    background-color: var(--primary-green);
    border-radius: 12px; /* 圆角方形 */
    margin-right: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 1.2rem;
}
.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}
.nav-links a {
    color: var(--dark-gray);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}
.nav-links a:hover {
    color: var(--primary-green);
}

/* 语言切换按钮 */
.lang-btn {
    background-color: var(--primary-green);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 50px;
    cursor: pointer;
    font-weight: 500;
    transition: background-color 0.2s;
}
.lang-btn:hover {
    background-color: #059669;
}

/* === 主标题区域 === */
.hero {
    padding: 100px 0 80px;
    border-bottom: 1px solid #f3f4f6;
}
.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}
.hero-text h1 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 1rem;
    font-weight: 800;
}
.hero-text h2 {
    font-size: 1.3rem;
    color: var(--medium-gray);
    font-weight: 400;
    margin-bottom: 1.5rem;
}
.hero-text p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--medium-gray);
    max-width: 90%;
}
.hero-cta {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}
.status-badge {
    background-color: var(--light-green);
    color: var(--primary-green);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 500;
}
.status-badge i {
    margin-right: 6px;
}

/* 主图区域视觉概念 */
.visual-concept {
    display: flex;
    justify-content: center;
    align-items: center;
}
.phone-outline {
    width: 260px;
    height: 500px;
    background: var(--white);
    border-radius: 36px;
    box-shadow: var(--shadow);
    border: 10px solid var(--dark-gray);
    position: relative;
    overflow: hidden;
}
.screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(145deg, #a5f3fc, #c7d2fe);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 30px;
}
.app-icon, .shoe-icon {
    width: 60px;
    height: 60px;
    background-color: var(--white);
    border-radius: 18px; /* 圆角方形图标 */
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}
.wave-line {
    width: 150px;
    height: 4px;
    background-color: var(--primary-green);
    border-radius: 2px;
}

/* === 功能列表 === */
.feature-list {
    list-style-position: inside;
    color: var(--medium-gray);
    margin-left: 1em;
    margin-bottom: 1.5em;
}
.feature-list li {
    margin-bottom: 0.5em;
}

.insight-box, .conclusion-box {
    background-color: var(--light-green);
    border-left: 4px solid var(--primary-green);
    padding: 20px;
    border-radius: 8px;
    margin-top: 30px;
}
.insight-box p, .conclusion-box p {
    margin-bottom: 0;
    color: var(--dark-gray);
}

/* === 技术栈 === */
.tech-stack {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 30px;
    margin: 40px 0;
}
.tech-item {
    text-align: center;
    padding: 25px 20px;
    background: var(--light-gray);
    border-radius: var(--border-radius);
}
.tech-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}
.tech-item h4 {
    margin-bottom: 10px;
    color: var(--dark-gray);
}
.tech-item p {
    font-size: 0.95rem;
    color: var(--medium-gray);
}
.tech-note {
    font-size: 0.95rem;
    color: var(--medium-gray);
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #e5e7eb;
}
.tech-note i {
    color: var(--primary-green);
    margin-right: 8px;
}

/* === 生态系统网格 === */
.ecosystem-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin: 40px 0;
}
.eco-item {
    padding: 25px;
    background: var(--white);
    border-radius: var(--border-radius);
    border: 1px solid #e5e7eb;
}
.eco-item h4 {
    margin-bottom: 12px;
    color: var(--dark-gray);
    display: flex;
    align-items: center;
}
.eco-item h4 i {
    margin-right: 10px;
    color: var(--primary-green);
}
.eco-item p {
    font-size: 0.95rem;
    color: var(--medium-gray);
}

/* === 页脚 === */
.footer {
    padding: 50px 0 30px;
    background-color: var(--dark-gray);
    color: var(--light-gray);
}
.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 30px;
}
.footer-logo {
    display: flex;
    align-items: center;
    gap: 15px;
}
.footer-logo .logo-icon {
    background-color: var(--primary-green);
    margin: 0;
}
.footer-logo h4 {
    color: var(--white);
    margin-bottom: 5px;
}
.footer-logo p {
    color: #9ca3af;
    font-size: 0.9rem;
}
.footer-links {
    display: flex;
    gap: 25px;
}
.footer-links a {
    color: #d1d5db;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: color 0.2s;
}
.footer-links a:hover {
    color: var(--primary-green);
}
.footer-copyright {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #374151;
    color: #9ca3af;
    font-size: 0.9rem;
}

/* === 响应式设计 === */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 40px;
    }
    .hero-text p {
        max-width: 100%;
    }
    .visual-concept {
        order: -1; /* 在小屏幕上将图形移到文字上方 */
    }
    .phone-outline {
        width: 220px;
        height: 420px;
        margin: 0 auto;
    }
}

@media (max-width: 768px) {
    .section {
        padding: 60px 0;
    }
    .section-title {
        font-size: 2rem;
    }
    .nav-links {
        gap: 15px;
        font-size: 0.95rem;
    }
    .content-card {
        padding: 30px 20px;
    }
    .tech-stack, .ecosystem-grid {
        grid-template-columns: 1fr;
    }
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    .footer-links {
        justify-content: center;
        flex-wrap: wrap;
    }
    .lang-btn {
        padding: 6px 12px;
        font-size: 0.9rem;
    }
}