/* 底部区域样式 - 暗色琉璃主题 */
:root {
    /* 使用与index.css一致的CSS变量 */
    --dark-bg-primary: #0A0A1A;
    --dark-bg-secondary: #1A1A3A;
    --dark-bg-gradient: linear-gradient(135deg, #0A0A1A 0%, #1A1A3A 100%);
    --glass-bg-light: rgba(255, 255, 255, 0.08);
    --glass-bg-medium: rgba(255, 255, 255, 0.12);
    --glass-bg-heavy: rgba(255, 255, 255, 0.15);
    --glass-border-light: rgba(255, 255, 255, 0.15);
    --glass-border-medium: rgba(255, 255, 255, 0.2);
    --glass-border-heavy: rgba(255, 255, 255, 0.25);
    
    --neon-primary: #00D4FF;
    --neon-secondary: #FF00FF;
    --neon-accent: #00FF9D;
    --neon-gradient: linear-gradient(135deg, #00D4FF 0%, #FF00FF 100%);
    
    --text-light: #FFFFFF;
    --text-muted: rgba(255, 255, 255, 0.7);
    --text-dim: rgba(255, 255, 255, 0.5);
    
    --shadow-soft: 0 4px 12px rgba(0, 0, 0, 0.2);
    --shadow-medium: 0 8px 24px rgba(0, 0, 0, 0.3);
    --shadow-heavy: 0 12px 36px rgba(0, 0, 0, 0.4);
    --shadow-glow-primary: 0 0 30px rgba(0, 212, 255, 0.4);
    --shadow-glow-secondary: 0 0 30px rgba(255, 0, 255, 0.4);
    --shadow-glow-accent: 0 0 30px rgba(0, 255, 157, 0.4);
}

/* 整体底部容器 - 毛玻璃效果 */
.footer-container {
    background: var(--glass-bg-light);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    padding: 60px 20px;
    text-align: center;
    font-size: 15px;
    color: var(--text-muted);
    border-top: 1px solid var(--glass-border-light);
    position: relative;
    overflow: hidden;
}

/* 背景粒子效果 */
.footer-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 30%, rgba(0, 212, 255, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255, 0, 255, 0.05) 0%, transparent 50%);
    z-index: -1;
}

/* 每个 section 容器 */
.footer-section {
    margin-bottom: 40px;
    padding: 30px;
    background: var(--glass-bg-medium);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: 16px;
    border: 1px solid var(--glass-border-medium);
    box-shadow: var(--shadow-soft);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.footer-section:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-medium), var(--shadow-glow-primary);
    border-color: var(--glass-border-heavy);
}

/* 标题样式 */
.footer-section h2 {
    margin-bottom: 25px;
    font-weight: 700;
    font-size: 1.8rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    background: var(--neon-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.footer-section h2 i {
    font-size: 1.6rem;
    color: var(--neon-primary);
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.5));
}

/* 横向排列列表项 */
.footer-section ul {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 25px;
    list-style: none;
    padding: 0;
    margin: 0;
}

/* 列表项样式 */
.footer-section ul li {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    background: var(--glass-bg-light);
    backdrop-filter: blur(15px);
    border-radius: 10px;
    border: 1px solid var(--glass-border-light);
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.footer-section ul li:hover {
    transform: translateY(-5px);
    background: var(--glass-bg-medium);
    border-color: var(--neon-primary);
    box-shadow: var(--shadow-soft), 0 0 20px rgba(0, 212, 255, 0.3);
}

/* 链接样式 */
.footer-section a {
    color: var(--text-light);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

.footer-section a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--neon-gradient);
    transition: width 0.3s ease;
}

.footer-section a:hover {
    color: var(--neon-primary);
}

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

/* 图标样式 */
.footer-section i {
    color: var(--neon-primary);
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.footer-section ul li:hover i {
    color: var(--neon-accent);
    transform: scale(1.2) rotate(10deg);
}

/* 公司信息段落样式 */
.footer-section p {
    margin: 15px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    color: var(--text-muted);
    line-height: 1.6;
}

.footer-section p i {
    color: var(--neon-accent);
    min-width: 20px;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .footer-container {
        padding: 50px 15px;
    }
    
    .footer-section {
        padding: 25px;
        margin-bottom: 30px;
    }
    
    .footer-section h2 {
        font-size: 1.6rem;
    }
}

@media (max-width: 768px) {
    .footer-container {
        padding: 40px 10px;
    }
    
    .footer-section {
        padding: 20px;
        margin-bottom: 25px;
    }
    
    .footer-section h2 {
        font-size: 1.4rem;
        flex-direction: column;
        gap: 8px;
    }
    
    .footer-section ul {
        gap: 15px;
    }
    
    .footer-section ul li {
        padding: 10px 15px;
        flex-direction: column;
        text-align: center;
        gap: 8px;
    }
    
    .footer-section p {
        flex-direction: column;
        text-align: center;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .footer-container {
        padding: 30px 5px;
    }
    
    .footer-section {
        padding: 15px;
        margin-bottom: 20px;
    }
    
    .footer-section h2 {
        font-size: 1.2rem;
    }
    
    .footer-section ul {
        gap: 10px;
    }
    
    .footer-section ul li {
        padding: 8px 12px;
        width: 100%;
        max-width: 200px;
    }
    
    .footer-section a {
        font-size: 0.9rem;
    }
    
    .footer-section p {
        font-size: 0.9rem;
    }
}

/* 特殊效果 - 版权信息强调 */
.footer-section p:first-child {
    font-weight: 600;
    color: var(--text-light);
    font-size: 1.1rem;
    margin-top: 20px;
}

.footer-section p:first-child i {
    color: var(--neon-secondary);
    filter: drop-shadow(0 0 8px rgba(255, 0, 255, 0.4));
}

/* 地址信息特殊样式 */
.footer-section p:nth-child(3) i {
    color: var(--neon-primary);
    filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.4));
}

/* 联系信息特殊样式 */
.footer-section p:last-child i {
    color: var(--neon-accent);
    filter: drop-shadow(0 0 8px rgba(0, 255, 157, 0.4));
}