/* ==================== 合作伙伴 & 页脚区域 ==================== */

.section-partners {
    background: linear-gradient(180deg, #f8f9fa 0%, #ffffff 100%);
    position: relative;
    overflow: hidden;
}

.partners-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 80px 40px 0;
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* 标题区域 */
.partners-title {
    font-size: 42px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    color: #0292fe;
}

/* Tab导航 */
.partners-tabs {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-top: 0px;
}

.partners-tab-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.partners-tab-btn {
    padding: 12px 32px;
    font-size: 16px;
    font-weight: 500;
    color: #666;
    background: #fff;
    border: 2px solid #e0e0e0;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.partners-tab-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: linear-gradient(135deg, #0292fe 0%, #00BEBD 100%);
    transform: translate(-50%, -50%);
    transition: width 0.4s ease, height 0.4s ease;
    z-index: 0;
}

.partners-tab-btn:hover {
    color: #0292fe;
    border-color: #0292fe;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(2, 146, 254, 0.2);
}

.partners-tab-btn.active {
    color: #fff;
    border-color: #0292fe;
    background: linear-gradient(135deg, #0292fe 0%, #00BEBD 100%);
    box-shadow: 0 4px 15px rgba(2, 146, 254, 0.3);
}

.partners-tab-btn.active::before {
    width: 300px;
    height: 300px;
}

.partners-tab-btn span {
    position: relative;
    z-index: 1;
}

/* 合作伙伴网格 - 限制高度，超出滚动 */
.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
    padding: 20px 10px;
    max-height: calc(100vh - 380px);
    overflow-y: auto;
    align-content: start;
}

/* 自定义滚动条样式 */
.partners-grid::-webkit-scrollbar {
    width: 6px;
}

.partners-grid::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.partners-grid::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 3px;
}

.partners-grid::-webkit-scrollbar-thumb:hover {
    background: #0292fe;
}

.partner-item {
    background: #fff;
    border-radius: 10px;
    padding: 20px 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
    position: relative;
    overflow: hidden;
}

.partner-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(2, 146, 254, 0.1), transparent);
    transition: left 0.5s ease;
}

.partner-item:hover::before {
    left: 100%;
}

.partner-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
    border-color: #0292fe;
}

.partner-item img {
    max-width: 100%;
    max-height: 60px;
    object-fit: contain;
    transition: all 0.3s ease;
}

.partner-item:hover img {
    transform: scale(1.05);
}

.partner-name {
    font-size: 14px;
    color: #666;
    text-align: center;
    margin-top: 15px;
    font-weight: 500;
}

/* 空状态 */
.partners-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: #999;
    font-size: 16px;
}

.partners-empty i {
    font-size: 48px;
    color: #ddd;
    margin-bottom: 15px;
    display: block;
}

/* ==================== 页脚区域 ==================== */

.footer-info {
    margin-top: auto;
    padding: 40px 0 30px;
    background: linear-gradient(180deg, transparent 0%, rgba(2, 146, 254, 0.03) 100%);
}

.footer-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, #e0e0e0, transparent);
    margin-bottom: 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-copyright {
    font-size: 14px;
    color: #666;
    font-weight: 400;
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 15px;
    font-size: 14px;
    color: #666;
}

.footer-link {
    color: #666;
    text-decoration: none;
    transition: color 0.3s ease;
    position: relative;
}

.footer-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: #0292fe;
    transition: width 0.3s ease;
}

.footer-link:hover {
    color: #0292fe;
}

.footer-link:hover::after {
    width: 100%;
}

.footer-separator {
    color: #ddd;
}

.footer-company {
    color: #666;
    font-weight: 500;
}

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

@media (max-width: 1200px) {
    .partners-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
        gap: 25px;
    }
    
    .partners-title {
        font-size: 36px;
    }
}

@media (max-width: 992px) {
    .partners-container {
        padding: 60px 30px 0;
    }
    
    .partners-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 20px;
    }
    
    .partners-tab-nav {
        gap: 15px;
    }
    
    .partners-tab-btn {
        padding: 10px 24px;
        font-size: 15px;
    }
    
    .partner-item {
        padding: 25px 15px;
    }
    
    .partner-item img {
        max-height: 70px;
    }
}

@media (max-width: 768px) {
    .partners-container {
        padding: 50px 20px 0;
    }
    
    .partners-title {
        font-size: 32px;
    }
    
    .partners-tab-nav {
        flex-direction: column;
        gap: 10px;
        align-items: stretch;
    }
    
    .partners-tab-btn {
        width: 100%;
        text-align: center;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .partner-item {
        padding: 20px 10px;
    }
    
    .partner-item img {
        max-height: 60px;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .footer-links {
        flex-direction: column;
        gap: 10px;
    }
    
    .footer-separator {
        display: none;
    }
}

@media (max-width: 480px) {
    .partners-title {
        font-size: 28px;
    }
    
    .partners-grid {
        grid-template-columns: 1fr;
    }
    
    .partner-item img {
        max-height: 50px;
    }
    
    .footer-copyright,
    .footer-links {
        font-size: 12px;
    }
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.partner-item {
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.partner-item:nth-child(1) { animation-delay: 0.1s; }
.partner-item:nth-child(2) { animation-delay: 0.15s; }
.partner-item:nth-child(3) { animation-delay: 0.2s; }
.partner-item:nth-child(4) { animation-delay: 0.25s; }
.partner-item:nth-child(5) { animation-delay: 0.3s; }
.partner-item:nth-child(6) { animation-delay: 0.35s; }
.partner-item:nth-child(7) { animation-delay: 0.4s; }
.partner-item:nth-child(8) { animation-delay: 0.45s; }
.partner-item:nth-child(n+9) { animation-delay: 0.5s; }

/* 加载状态 */
.partners-loading {
    grid-column: 1 / -1;
    text-align: center;
    padding: 60px 20px;
    color: #999;
    font-size: 16px;
}

.partners-loading::after {
    content: '';
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #0292fe;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-left: 10px;
    vertical-align: middle;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}