/* common.css - 公共样式文件 */
:root {
    --primary-blue: #0a2463;
    --secondary-blue: #1e40af;
    --accent-gold: #d4af37;
    --light-bg: #f8fafc;
    --dark-text: #1e293b;
    --light-text: #64748b;
    --white: #ffffff;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

/* 导航栏样式 */
.navbar {
    background-color: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 98%;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-blue);
}

.logo-accent {
    color: var(--accent-gold);
}

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

.nav-item {
    margin-left: 30px;
}

.nav-link {
    text-decoration: none;
    color: var(--dark-text);
    font-weight: 500;
    transition: var(--transition);
}

.nav-link:hover {
    color: var(--secondary-blue);
}

.nav-cta {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 10px 20px;
    border-radius: 5px;
    transition: var(--transition);
}

.nav-cta:hover {
    background-color: var(--secondary-blue);
    color: var(--white);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary-blue);
    cursor: pointer;
}

/* 移动端菜单 */
@media (max-width: 992px) {
    .mobile-menu-btn {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--white);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        transition: var(--transition);
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-item {
        margin: 15px 0;
    }
}

/* 页脚样式 */
.footer {
    background-color: var(--primary-blue);
    color: var(--white);
    padding: 70px 0 30px;
}

.footer-container {
    max-width: 98%;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
}

.footer-col h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--accent-gold);
}

.footer-col p {
    margin-bottom: 20px;
    opacity: 0.8;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--white);
    text-decoration: none;
    opacity: 0.8;
    transition: var(--transition);
}

.footer-links a:hover {
    opacity: 1;
    padding-left: 5px;
}

.footer-social {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-icon:hover {
    background: var(--accent-gold);
    color: var(--primary-blue);
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    margin-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    opacity: 0.7;
    font-size: 0.9rem;
}