/* ========================================
   页脚样式 - 优化版
   ======================================== */

/* 页脚主容器 */
.footer {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 50px 0 0;
    color: #ffffff;
    margin-top: 50px;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
}

/* 页脚内容区 */
.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
    padding: 0 20px;
}

/* 页脚各个区块 */
.footer-section {
    animation: fadeInUp 0.6s ease-out;
}

.footer-section h3 {
    color: #ffffff;
    margin-bottom: 20px;
    font-size: 20px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
}

.footer-section h3 i {
    font-size: 24px;
    color: #ffd700;
}

.footer-section h4 {
    color: #ffffff;
    margin-bottom: 15px;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    padding-bottom: 10px;
    border-bottom: 2px solid rgba(255, 255, 255, 0.2);
}

.footer-section h4 i {
    color: #ffd700;
}

/* 关于我们区块特殊样式 */
.about-section .footer-desc {
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
    margin-bottom: 15px;
}

.footer-stats {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 15px;
}

.footer-stats span {
    display: flex;
    align-items: center;
    gap: 8px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 14px;
}

.footer-stats i {
    color: #ffd700;
}

.footer-domain {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 15px;
    padding: 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.footer-domain:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(5px);
}

.footer-domain i {
    color: #ffd700;
}

.footer-domain a {
    color: #ffffff;
    font-weight: 500;
    text-decoration: none;
}

/* 列表样式 */
.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: 10px;
    transition: all 0.3s ease;
}

.footer-section ul li:hover {
    transform: translateX(5px);
}

.footer-section a {
    color: rgba(255, 255, 255, 0.85);
    text-decoration: none;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
}

.footer-section a i {
    font-size: 14px;
    color: rgba(255, 215, 0, 0.8);
    transition: all 0.3s ease;
}

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

.footer-section a:hover i {
    color: #ffd700;
    transform: scale(1.2);
}

/* ========================================
   底部版权信息区域
   ======================================== */

.footer-bottom {
    padding: 30px 20px;
    margin-top: 30px;
    backdrop-filter: blur(10px);
}

/* 版权文字 */
.footer-copyright {
    text-align: center;
    margin-bottom: 20px;
}

.copyright-text {
    color: rgba(255, 255, 255, 0.95);
    font-size: 15px;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.copyright-text i {
    color: #ffd700;
}

.copyright-text strong {
    color: #ffffff;
    font-weight: 600;
}

/* 备案信息 */
.footer-beian {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-beian p {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 6px;
}

.footer-beian a,
.footer-beian span {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-size: 13px;
    transition: all 0.3s ease;
}

.footer-beian a {
    display: flex;
    align-items: center;
    gap: 6px;
}

.footer-beian a:hover {
    color: #ffffff;
    text-decoration: underline;
}

.footer-beian i {
    color: #ffd700;
}

.footer-beian img {
    vertical-align: middle;
    opacity: 0.8;
}

/* 联系方式 */
.footer-contact {
    text-align: center;
}

.footer-contact p {
    margin: 8px 0;
    color: rgba(255, 255, 255, 0.8);
    font-size: 13px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    flex-wrap: wrap;
}

.footer-contact i {
    color: #ffd700;
}

.footer-contact a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: all 0.3s ease;
}

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

/* ========================================
   响应式设计
   ======================================== */

/* 平板设备 */
@media (max-width: 1024px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 30px;
    }

    .about-section {
        grid-column: 1 / -1;
    }
}

/* 手机设备 */
@media (max-width: 768px) {
    .footer {
        padding: 30px 0 0;
        margin-top: 30px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 25px;
        padding: 0 15px;
    }

    .footer-section h3 {
        font-size: 18px;
    }

    .footer-section h4 {
        font-size: 15px;
    }

    .footer-stats {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .footer-bottom {
        padding: 20px 15px;
    }

    .copyright-text {
        font-size: 13px;
    }

    .footer-beian {
        flex-direction: column;
        gap: 10px;
    }

    .footer-contact p {
        font-size: 12px;
        flex-direction: column;
    }
}

/* 小屏手机 */
@media (max-width: 480px) {
    .footer-section a {
        font-size: 13px;
    }

    .footer-stats span {
        font-size: 13px;
    }

    .copyright-text {
        font-size: 12px;
        flex-direction: column;
        line-height: 1.6;
    }
}

/* ========================================
   动画效果
   ======================================== */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}