/* 全局通用CSS - 应用于所有页面 */

/* 基础样式 */
:root {
    --primary-color: #333;
    --accent-color: #ff6b6b;
    --bg-color: #f5f5f5;
    --card-bg: #ffffff;
    --text-color: #333;
    --border-radius: 8px;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

html, body {
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Nunito', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* 导航栏 */
.nav-bar {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.nav-logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    color: white;
    text-decoration: none;
    font-weight: 700;
}

.nav-links {
    display: flex;
    list-style: none;
}

.nav-links li {
    margin-left: 1.5rem;
}

.nav-link {
    color: #fff;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
    font-size: 1rem;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-color);
}

/* 移动导航 */
.mobile-nav-toggle {
    display: none;
    font-size: 1.8rem;
    cursor: pointer;
    color: #fff;
    background: none;
    border: none;
    padding: 0.5rem;
    z-index: 101;
    position: relative;
    margin-left: auto;
}

.mobile-nav-toggle i {
    display: block;
    width: 1.8rem;
    height: 1.8rem;
    text-align: center;
    line-height: 1.8rem;
}

/* 主要内容 */
.main-content {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
    flex: 1;
}

.page-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.2rem;
    margin-bottom: 1rem;
    text-align: center;
    color: var(--primary-color);
}

.page-description {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 2.5rem;
    color: #555;
    font-size: 1.05rem;
}

/* 页脚 */
.footer {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem 0;
    margin-top: auto;
    margin-bottom: 0;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.footer-section {
    /* margin-bottom: 1rem; */
}

.footer-section h4 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.1rem;
    margin-bottom: 0.8rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.social-link {
    color: #fff;
    font-size: 1.3rem;
    transition: color 0.3s ease;
}

.social-link:hover {
    color: var(--accent-color);
}

.copyright {
    width: 100%;
    text-align: center;
    margin-top: 0.6rem;
    padding-top: 0.8rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    color: #ddd;
}

/* 卡片通用样式 */
.design-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.design-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.card-title {
    background-color: var(--primary-color);
    color: white;
    padding: 0.8rem 1.2rem;
    font-family: 'Montserrat', sans-serif;
    font-weight: 600;
    font-size: 1rem;
}

.card-content {
    padding: 1.5rem;
}

/* 网格布局 */
.grid-container {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.design-card.small {
    grid-column: span 1;
}

.design-card.large {
    grid-column: span 2;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .grid-container {
        grid-template-columns: repeat(2, 1fr);
    }

    .design-card.large {
        grid-column: span 2;
    }
}

@media (max-width: 767px) {
    /* 导航栏响应式 */
    .mobile-nav-toggle {
        display: block !important;
        position: relative !important;
        right: 0 !important;
        margin-left: auto !important;
    }

    .nav-container {
        flex-direction: row !important;
        justify-content: space-between !important;
        align-items: center !important;
        position: relative !important;
        /* padding: 1rem !important; */
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--primary-color);
        align-items: center;
        padding: 1rem 0;
        gap: 1rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.3s ease, opacity 0.3s ease, visibility 0.3s ease;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
        z-index: 99;
    }

    .nav-links.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-links li {
        width: 100%;
        text-align: center;
        margin: 0;
    }

    .nav-link {
        display: block;
        padding: 0.2rem 1rem;
        width: 100%;
    }

    /* 网格响应式 */
    .grid-container {
        grid-template-columns: 1fr;
    }

    .design-card.large,
    .design-card.small {
        grid-column: span 1;
    }

    .page-title {
        font-size: 1.8rem;
    }

    .page-description {
        font-size: 0.95rem;
        margin-bottom: 1.5rem;
    }
}