/* AI供应商展示区域样式 - 科技风 */
.providers-section {
    padding: 80px 0;
    background: linear-gradient(180deg, var(--bg-dark) 0%, var(--bg-darker) 100%);
    position: relative;
    overflow: hidden;
}

.providers-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 80%, rgba(0, 102, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(0, 212, 255, 0.08) 0%, transparent 50%);
    opacity: 0.6;
    z-index: 1;
}

.providers-section .section-container {
    position: relative;
    z-index: 2;
}

.providers-grid {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 20px;
    margin: 60px 0 40px;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.provider-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 15px;
    background: var(--card-bg);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--card-border);
    backdrop-filter: blur(5px);
    position: relative;
    overflow: hidden;
}

.provider-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 102, 255, 0.03) 0%, rgba(0, 212, 255, 0.02) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.provider-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-primary);
    border-color: var(--primary-color);
    background: var(--card-hover);
}

.provider-item:hover::before {
    opacity: 1;
}

.provider-logo {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 12px;
    border-radius: 12px;
    background: rgba(0, 102, 255, 0.06);
    box-shadow: 0 2px 8px rgba(0, 102, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
}

.provider-item:hover .provider-logo {
    transform: scale(1.05);
    box-shadow: 0 3px 12px rgba(0, 102, 255, 0.2);
    background: rgba(0, 102, 255, 0.1);
}

.provider-logo svg {
    width: 32px;
    height: 32px;
    color: var(--text-secondary);
    transition: color 0.3s ease;
    filter: none;
    -webkit-filter: none;
}

.provider-item:hover .provider-logo svg {
    color: var(--primary-color);
    filter: none;
    -webkit-filter: none;
}

.provider-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
    line-height: 1.4;
    margin-top: 8px;
    transition: color 0.3s ease;
}

.provider-item:hover .provider-name {
    color: var(--text-primary);
}

.providers-cta {
    text-align: center;
    margin-top: 40px;
}

.provider-button {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 16px 32px;
    background: var(--primary-gradient);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 20px rgba(0, 102, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.provider-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.provider-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 102, 255, 0.4);
}

.provider-button:hover::before {
    left: 100%;
}

.provider-button i {
    transition: transform 0.3s ease;
}

.provider-button:hover i {
    transform: translateX(4px);
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .providers-grid {
        grid-template-columns: repeat(6, 1fr);
        gap: 16px;
    }
}

@media (max-width: 992px) {
    .providers-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 14px;
    }
    
    .provider-item {
        padding: 16px 12px;
    }
    
    .provider-logo {
        width: 40px;
        height: 40px;
    }
    
    .provider-logo svg {
        width: 28px;
        height: 28px;
    }
    
    .provider-name {
        font-size: 11px;
    }
}

@media (max-width: 768px) {
    .providers-section {
        padding: 60px 0;
    }
    
    .providers-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
        margin: 40px 0 30px;
    }
    
    .provider-item {
        padding: 14px 10px;
    }
    
    .provider-logo {
        width: 36px;
        height: 36px;
        margin-bottom: 8px;
    }
    
    .provider-logo svg {
        width: 24px;
        height: 24px;
    }
    
    .provider-name {
        font-size: 10px;
        margin-top: 6px;
    }
    
    .provider-button {
        padding: 14px 28px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    .providers-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .provider-item {
        padding: 12px 8px;
    }
    
    .provider-logo {
        width: 32px;
        height: 32px;
    }
    
    .provider-logo svg {
        width: 20px;
        height: 20px;
    }
    
    .provider-name {
        font-size: 9px;
    }
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.provider-item {
    animation: fadeInUp 0.6s ease forwards;
    opacity: 0;
}

.provider-item:nth-child(1) { animation-delay: 0.1s; }
.provider-item:nth-child(2) { animation-delay: 0.2s; }
.provider-item:nth-child(3) { animation-delay: 0.3s; }
.provider-item:nth-child(4) { animation-delay: 0.4s; }
.provider-item:nth-child(5) { animation-delay: 0.5s; }
.provider-item:nth-child(6) { animation-delay: 0.6s; }
.provider-item:nth-child(7) { animation-delay: 0.7s; }
.provider-item:nth-child(8) { animation-delay: 0.8s; }
.provider-item:nth-child(9) { animation-delay: 0.9s; }
.provider-item:nth-child(10) { animation-delay: 1.0s; }
.provider-item:nth-child(11) { animation-delay: 1.1s; }
.provider-item:nth-child(12) { animation-delay: 1.2s; }
.provider-item:nth-child(13) { animation-delay: 1.3s; }
.provider-item:nth-child(14) { animation-delay: 1.4s; }
.provider-item:nth-child(15) { animation-delay: 1.5s; }
.provider-item:nth-child(16) { animation-delay: 1.6s; } 