/* 页脚样式 */
#footer {
    background: linear-gradient(135deg, #2c3e50 0%, #1a252f 100%);
    color: #ffffff;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 20px;
    color: #ffffff;
}

.footer-desc {
    font-size: 14px;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 20px;
}

/* 社交链接 */
.footer-social {
    display: flex;
    gap: 15px;
}

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

.footer-social .social-link:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

/* 页脚链接 */
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: #ffffff;
    padding-left: 5px;
}

/* 页脚联系信息 */
.footer-contact {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-contact li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-bottom: 15px;
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
}

.footer-contact i {
    color: var(--primary-color);
    margin-top: 4px;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-contact a:hover {
    color: #ffffff;
}

/* 页脚按钮 */
.footer-section .btn {
    margin-top: 10px;
}

/* 页脚底部 */
.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.6);
}

.footer-bottom a {
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    margin: 0 5px;
}

.footer-bottom a:hover {
    color: #ffffff;
}

/* 设备管理链接图标 */
.device-login-link {
    position: relative;
    padding-left: 0;
}

.device-login-link::before {
    content: '';
    display: inline-block;
    width: 1em;
    height: 1em;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='2' y='3' width='20' height='14' rx='2' ry='2'/%3E%3Cline x1='8' y1='21' x2='16' y2='21'/%3E%3Cline x1='12' y1='17' x2='12' y2='21'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
    margin-right: 4px;
    vertical-align: middle;
}

/* 响应式调整 */
@media (max-width: 768px) {
    #footer {
        padding: 40px 0 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}