/* ========== 公告栏样式 ========== */

/* 公告栏外层容器 - 上下间距一致 */
.announcement-wrapper {
    padding: 1rem 0 0 0;
    background-color: transparent;
}

/* 公告栏主体 */
.announcement-bar {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 0.75rem 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    animation: slideDown 0.5s ease-out;
    overflow: hidden;
    position: relative;
}

.announcement-content {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.announcement-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
    animation: pulse 2s ease-in-out infinite;
    z-index: 2;
}

.announcement-text {
    flex: 1;
    font-size: 0.95rem;
    line-height: 1.5;
    overflow: hidden;
    position: relative;
    z-index: 2;
}

/* 走马灯效果 - 当内容过长时自动滚动 */
.announcement-text-inner {
    display: inline-block;
    white-space: nowrap;
}

/* 重复内容用于无缝循环 */
.announcement-duplicate {
    padding-left: 50px;
}

/* 如果内容过长，启用走马灯动画 */
.announcement-text.marquee .announcement-text-inner {
    animation: marquee 20s linear infinite;
}

.announcement-text.marquee:hover .announcement-text-inner {
    animation-play-state: paused;
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-50%);
    }
}

.announcement-text p {
    margin: 0;
    display: inline;
}

.announcement-text a {
    color: white;
    text-decoration: underline;
    font-weight: 500;
}

.announcement-text a:hover {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
}

/* 动画效果 */
@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

/* 响应式调整 */
@media (max-width: 767.98px) {
    .announcement-wrapper {
        padding: 0.75rem 0 0 0;
    }
    
    .announcement-bar {
        padding: 0.6rem 0.75rem;
        border-radius: 0.375rem;
    }
    
    .announcement-content {
        gap: 0.75rem;
    }
    
    .announcement-icon {
        font-size: 1.25rem;
    }
    
    .announcement-text {
        font-size: 0.875rem;
    }
    
    /* 移动端走马灯速度稍快 */
    .announcement-text.marquee .announcement-text-inner {
        animation-duration: 15s;
    }
}

/* 暗色主题适配 */
[data-bs-theme="dark"] .announcement-bar {
    background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

[data-bs-theme="dark"] .announcement-text a {
    color: #90cdf4;
}

[data-bs-theme="dark"] .announcement-text a:hover {
    color: #63b3ed;
}

/* 打印时隐藏公告栏 */
@media print {
    .announcement-wrapper {
        display: none;
    }
}

/* 可选：添加关闭按钮样式（如果需要） */
.announcement-close {
    background: none;
    border: none;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0;
    margin-left: 1rem;
    opacity: 0.8;
    transition: opacity 0.2s;
}

.announcement-close:hover {
    opacity: 1;
}

/* 可选：不同类型的公告样式 */
.announcement-bar.announcement-info {
    background: linear-gradient(135deg, #3b82f6 0%, #2563eb 100%);
}

.announcement-bar.announcement-success {
    background: linear-gradient(135deg, #10b981 0%, #059669 100%);
}

.announcement-bar.announcement-warning {
    background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
}

.announcement-bar.announcement-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
}

/* 走马灯 JavaScript 初始化提示 */
/* 需要在页面加载时检测文本宽度，如果超出容器宽度则添加 marquee 类 */