/*
================================================================
公告卡片组件样式 - 独立样式文件
================================================================
用于 JS 动态渲染的公告卡片，与 announcement-list.css 保持一致
*/

/*
============================================
公告列表包装器
============================================
*/

.announcement-list {
    display: grid;
    gap: var(--space-6);
}

/*
============================================
公告列表项（卡片）
============================================
*/

.announcement-card {
    position: relative;
    display: grid;
    gap: var(--space-4);
    padding: var(--space-6);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-lg);
    background: var(--color-white);
    color: inherit;
    overflow: hidden;
    transition: all var(--transition-base);
    text-decoration: none;
}

.announcement-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--color-brand);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.announcement-card:hover {
    border-color: var(--color-border-medium);
    box-shadow: var(--shadow-card);
    transform: translateY(-2px);
}

.announcement-card:hover::before {
    opacity: 1;
}

.announcement-card__row-1 {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    flex-wrap: wrap;
}

.announcement-card__title {
    margin: 0;
    flex: 1;
    min-width: 0;
    font-size: var(--text-body);
    line-height: 1.5;
    font-weight: var(--weight-semibold);
    color: var(--color-gray-900);
    letter-spacing: -0.01em;
}

.announcement-card__badges {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
}

.announcement-badge {
    display: inline-flex;
    align-items: center;
    height: 24px;
    padding: 0 10px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: var(--weight-medium);
    white-space: nowrap;
}

.announcement-badge--category {
    background: linear-gradient(135deg, rgba(72, 187, 120, 0.15) 0%, rgba(72, 187, 120, 0.08) 100%);
    color: #2d7a4e;
    border: 1px solid rgba(72, 187, 120, 0.2);
}

.announcement-badge--fresh {
    background: linear-gradient(135deg, rgba(24, 226, 153, 0.15) 0%, rgba(24, 226, 153, 0.08) 100%);
    color: #059669;
    border: 1px solid rgba(24, 226, 153, 0.2);
}

.announcement-badge--deadline {
    background: linear-gradient(135deg, rgba(93, 168, 211, 0.15) 0%, rgba(93, 168, 211, 0.08) 100%);
    color: #5DA8D3;
    border: 1px solid rgba(93, 168, 211, 0.2);
}

.announcement-badge--expired {
    background: linear-gradient(135deg, rgba(212, 86, 86, 0.12) 0%, rgba(212, 86, 86, 0.06) 100%);
    color: #b91c1c;
    border: 1px solid rgba(212, 86, 86, 0.2);
}

.announcement-card__row-2 {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2) var(--space-6);
    font-size: var(--text-small);
    color: var(--color-gray-500);
}

.announcement-card__meta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    min-width: 0;
}

.announcement-card__dot {
    width: 4px;
    height: 4px;
    border-radius: 50%;
    background: var(--color-brand);
    opacity: 0.6;
    flex-shrink: 0;
}

.announcement-card__row-3 {
    display: flex;
    justify-content: flex-start;
    gap: var(--space-4);
    align-items: center;
    font-size: var(--text-small);
    color: var(--color-gray-400);
    overflow: hidden;
}

.announcement-card__summary {
    min-width: 0;
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.announcement-card__hint {
    flex-shrink: 0;
    color: var(--color-brand);
    font-weight: var(--weight-medium);
}

/*
============================================
空状态
============================================
*/

.announcement-empty {
    padding: var(--space-12) var(--space-8);
    text-align: center;
}

.announcement-empty strong {
    display: block;
    font-size: var(--text-body-lg);
    font-weight: var(--weight-medium);
    color: var(--color-gray-900);
}

.announcement-empty p {
    margin: var(--space-4) 0 0;
    color: var(--color-gray-400);
}

.announcement-empty a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    padding: 0 var(--space-8);
    margin-top: var(--space-6);
    border-radius: var(--radius-full);
    background: var(--color-gray-900);
    color: var(--color-white);
    font-weight: var(--weight-medium);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.announcement-empty a:hover {
    opacity: 0.9;
    color: var(--color-white);
}

/*
============================================
响应式
============================================
*/

@media (max-width: 768px) {
    .announcement-card__row-1 {
        flex-wrap: wrap;
    }

    .announcement-card__title {
        white-space: normal;
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }
}

/*
============================================
深色模式
============================================
*/

body.dark-theme .announcement-card {
    background: var(--color-gray-50);
    border-color: var(--color-border-subtle);
}