.app-footer {
    grid-area: footer;
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 16px;
    height: var(--footer-height);
    overflow: hidden;
}

/* 左侧固定品牌信息 */
.footer-left {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 12px;
    color: var(--text-secondary);
}

.footer-left a {
    color: inherit;
}

/* 备案信息组 */
.footer-beian {
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.beian-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s ease;
}

.beian-link:hover {
    color: var(--primary-color);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.beian-separator {
    color: var(--border-color);
    opacity: 0.6;
    user-select: none;
}

/* 版权声明 */
.footer-copyright {
    white-space: nowrap;
    opacity: 0.85;
}

.footer-brand {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    white-space: nowrap;
}

/* 右侧走马灯区域 */
.footer-right {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    min-width: 0;
}

.footer-marquee-container {
    max-width: 500px;
    width: 100%;
    overflow: hidden;
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
    background: var(--surface-color);
}

.footer-marquee-content {
    display: inline-block;
    white-space: nowrap;
}

.footer-marquee-content.paused {
    animation-play-state: paused;
}

/* 底部品牌链接 */
.footer-brand-link {
    text-decoration: none;
    color: var(--text-secondary);
    transition: color 0.2s;
}

.footer-brand-link:hover {
    color: var(--primary-color);
    cursor: pointer;
}

.footer-brand-link .footer-brand {
    font-size: 13px;
    font-weight: 500;
}

.footer-brand {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.version-text {
    font-weight: 500;
    color: var(--text-secondary);
}

.copyright-text {
    font-size: 11px;
    opacity: 0.7;
    font-weight: 400;
}

.footer-brand-link:hover .version-text {
    color: var(--primary-color);
}

.footer-brand-link:hover .copyright-text {
    opacity: 1;
}

@keyframes marquee-scroll {
    0% {
        transform: translateX(var(--start-pos, 100%));
    }

    100% {
        transform: translateX(var(--end-pos, -100%));
    }
}

/* 单条消息滚动动画 */
@keyframes marquee-slide {
    0% {
        transform: translateX(100%);
    }

    100% {
        transform: translateX(-100%);
    }
}

/* 消息项样式 */
.marquee-item {
    font-size: 13px;
    color: var(--text-secondary);
    padding: 0 16px;
    display: inline-block;
    min-width: 100%;
}

.marquee-item.success {
    color: #10b981;
}

.marquee-item.warning {
    color: #f59e0b;
}

.marquee-item.error {
    color: #ef4444;
}

.marquee-item .loop-indicator {
    font-size: 11px;
    opacity: 0.6;
    margin-left: 4px;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .footer-marquee-container {
        max-width: 400px;
    }
}

@media (max-width: 768px) {
    .footer-left {
        gap: 8px;
        font-size: 11px;
    }

    .footer-beian {
        gap: 4px;
    }

    .footer-brand {
        font-size: 12px;
    }

    .footer-marquee-container {
        max-width: 300px;
    }

    .marquee-item {
        font-size: 12px;
    }
}

.footer-promo-link {
    margin-left: 16px;
    padding: 0;
    background: none;
    color: #FF6600;
    font-size: 12px;
    font-weight: 500;
    text-decoration: underline;
    text-decoration-color: rgba(255, 102, 0, 0.3);
    text-underline-offset: 3px;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.footer-promo-link:hover {
    color: #FF8C00;
    text-decoration-color: #FF8C00;
    transform: translateX(2px);
}