/*
================================================================
公告列表页样式 - 基于 DESIGN.md 设计规范重构
================================================================
*/

.announcement-page {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-8) var(--space-24);
    color: var(--color-gray-700);
}

.announcement-page a {
    text-decoration: none;
}

/*
============================================
Hero 区域 - 大气渐变背景
============================================
*/

.announcement-hero {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.85fr);
    gap: var(--space-8);
    padding: var(--space-12);
    margin-bottom: var(--space-6);
    background: linear-gradient(180deg, rgba(24, 226, 153, 0.06) 0%, rgba(255, 255, 255, 0) 60%);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-card);
}

.announcement-hero__eyebrow {
    display: inline-flex;
    align-items: center;
    height: 30px;
    padding: 0 var(--space-6);
    border-radius: var(--radius-full);
    background: var(--color-white);
    color: var(--color-brand);
    font-family: var(--font-mono);
    font-size: var(--text-mono);
    font-weight: var(--weight-semibold);
    letter-spacing: var(--tracking-mono);
    text-transform: uppercase;
}

.announcement-hero__title {
    margin: var(--space-6) 0 var(--space-4);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: var(--weight-semibold);
    line-height: 1.10;
    letter-spacing: var(--tracking-heading);
    color: var(--color-gray-900);
}

.announcement-hero__copy p {
    margin: 0;
    max-width: 56ch;
    font-size: var(--text-body);
    line-height: var(--leading-normal);
    color: var(--color-gray-500);
}

.announcement-hero__chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-top: var(--space-8);
}

.announcement-chip {
    display: inline-flex;
    align-items: center;
    height: 32px;
    padding: 0 var(--space-6);
    border-radius: var(--radius-full);
    background: var(--color-white);
    border: 1px solid var(--color-border-subtle);
    font-size: var(--text-small);
    color: var(--color-gray-500);
    transition: all var(--transition-fast);
}

.announcement-chip:hover {
    border-color: var(--color-border-medium);
}

.announcement-chip strong {
    margin-left: var(--space-2);
    color: var(--color-gray-900);
}

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

.announcement-stat {
    padding: var(--space-6) var(--space-8);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-lg);
    background: rgba(255, 255, 255, 0.88);
}

.announcement-stat small {
    display: block;
    font-size: var(--text-label);
    font-weight: var(--weight-medium);
    letter-spacing: var(--tracking-label);
    text-transform: uppercase;
    color: var(--color-gray-400);
}

.announcement-stat strong {
    display: block;
    margin: var(--space-4) 0 var(--space-2);
    font-size: var(--text-display);
    font-size: 2rem;
    line-height: 1;
    letter-spacing: var(--tracking-subheading);
    color: var(--color-gray-900);
}

.announcement-stat p {
    margin: 0;
    font-size: var(--text-small);
    color: var(--color-gray-500);
}

.announcement-stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
}

/*
============================================
面包屑导航
============================================
*/

.announcement-breadcrumb {
    display: inline-flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4) var(--space-6);
    margin-bottom: var(--space-6);
    background: var(--color-white);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-lg);
    font-size: var(--text-small);
    color: var(--color-gray-500);
}

.announcement-breadcrumb a {
    color: var(--color-gray-700);
    transition: color var(--transition-fast);
}

.announcement-breadcrumb a:hover {
    color: var(--color-brand);
}

.announcement-breadcrumb__separator {
    color: var(--color-gray-400);
}

.announcement-breadcrumb__current {
    color: var(--color-gray-900);
    font-weight: var(--weight-medium);
}

/*
============================================
筛选工具栏
============================================
*/

.announcement-toolbar {
    position: sticky;
    top: calc(64px + var(--space-6));
    z-index: 20;
    padding: var(--space-6);
    margin-bottom: var(--space-6);
    background: var(--color-white);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-card);
}

.announcement-toolbar__grid {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr auto auto;
    gap: var(--space-4);
    align-items: center;
}

.announcement-filter {
    width: 100%;
    height: 44px;
    padding: 0 var(--space-16) 0 var(--space-6);
    font-family: var(--font-primary);
    font-size: var(--text-small);
    color: var(--color-gray-900);
    background-color: var(--color-white);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23888888' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-6) center;
    border: 1px solid var(--color-border-medium);
    border-radius: var(--radius-md);
    appearance: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.announcement-filter:focus {
    outline: none;
    border-color: var(--color-brand);
    box-shadow: var(--shadow-focus);
}

.announcement-toolbar__button,
.announcement-toolbar__link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    padding: 0 var(--space-8);
    border-radius: var(--radius-full);
    font-family: var(--font-primary);
    font-size: var(--text-button);
    font-weight: var(--weight-medium);
    white-space: nowrap;
    transition: all var(--transition-base);
}

.announcement-toolbar__button {
    border: none;
    background: var(--color-gray-900);
    color: var(--color-white);
    box-shadow: var(--shadow-button);
    cursor: pointer;
}

.announcement-toolbar__button:hover {
    opacity: 0.9;
}

.announcement-toolbar__link {
    background: var(--color-white);
    border: 1px solid var(--color-border-medium);
    color: var(--color-gray-700);
}

.announcement-toolbar__link:hover {
    border-color: var(--color-gray-200);
}

/*
============================================
活跃筛选标签
============================================
*/

.announcement-active-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.announcement-active-filter {
    display: inline-flex;
    align-items: center;
    height: 28px;
    padding: 0 var(--space-6);
    border-radius: var(--radius-full);
    background: var(--color-brand-light);
    color: var(--color-brand-deep);
    font-size: var(--text-small);
    font-weight: var(--weight-medium);
}

/*
============================================
主内容区域布局
============================================
*/

.announcement-shell {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 280px;
    gap: var(--space-8);
    align-items: start;
}

.announcement-main,
.announcement-side {
    display: grid;
    gap: var(--space-6);
}

/*
============================================
公告列表面板
============================================
*/

.announcement-panel {
    background: var(--color-white);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.announcement-panel__head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-6);
    padding: var(--space-6) var(--space-8);
    border-bottom: 1px solid var(--color-border-subtle);
}

.announcement-panel__head h2 {
    margin: 0;
    font-size: var(--text-card-title);
    font-weight: var(--weight-semibold);
    letter-spacing: var(--tracking-card);
    color: var(--color-gray-900);
}

.announcement-panel__head p {
    margin: var(--space-1) 0 0;
    font-size: var(--text-small);
    color: var(--color-gray-400);
}

.announcement-panel__meta {
    font-size: var(--text-small);
    color: var(--color-gray-500);
    white-space: nowrap;
}

.announcement-list {
    display: grid;
    gap: var(--space-4);
    padding: var(--space-6);
}

/*
============================================
公告列表项
============================================
*/

.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);
}

.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;
    max-width: 100%;
}

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

/*
============================================
侧边栏面板
============================================
*/

.announcement-side-panel {
    padding: var(--space-6) var(--space-8) var(--space-8);
}

.announcement-side-panel__head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-6);
}

.announcement-side-panel__head h2 {
    margin: 0;
    font-size: var(--text-card-title);
    font-weight: var(--weight-medium);
    letter-spacing: var(--tracking-card);
    color: var(--color-gray-700);
}

.announcement-side-panel__head p {
    margin: var(--space-1) 0 0;
    font-size: var(--text-small);
    color: var(--color-gray-400);
}

.announcement-side-panel__list {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    margin-top: var(--space-6);
}

.announcement-region-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    background: var(--color-white);
    border: 1px solid var(--color-border-subtle);
    color: var(--color-gray-500);
    transition: all var(--transition-base);
}

.announcement-region-link:hover {
    border-color: var(--color-brand);
    transform: translateX(4px);
}

.announcement-region-link__name {
    font-weight: var(--weight-normal);
    color: var(--color-gray-700);
}

.announcement-region-link__stats {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    font-size: var(--text-small);
}

.announcement-region-link__stats strong {
    display: block;
    color: var(--color-gray-500);
    font-size: var(--text-body);
}

.announcement-region-link__stats small {
    color: var(--color-gray-400);
    font-size: 0.65rem;
}

.announcement-region-link__pair {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    min-width: 28px;
}

/*
============================================
快捷筛选
============================================
*/

.announcement-quick {
    padding: var(--space-6) var(--space-8) var(--space-8);
}

.announcement-quick__chips {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-top: var(--space-6);
}

.announcement-quick__chips a {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    padding: 0 var(--space-6);
    border-radius: var(--radius-full);
    background: var(--color-gray-50);
    color: var(--color-gray-700);
    font-size: var(--text-small);
    font-weight: var(--weight-medium);
    transition: all var(--transition-fast);
}

.announcement-quick__chips a:hover {
    background: var(--color-gray-100);
    color: var(--color-gray-900);
}

.announcement-quick__chips a.hot {
    background: var(--color-brand-light);
    color: var(--color-brand-deep);
}

.announcement-quick__chips a.hot:hover {
    background: rgba(24, 226, 153, 0.25);
}

.announcement-quick p {
    margin: var(--space-6) 0 0;
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border-subtle);
    font-size: var(--text-small);
    line-height: var(--leading-normal);
    color: var(--color-gray-500);
}

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

.announcement-empty {
    padding: var(--space-24) var(--space-8);
    text-align: center;
}

.announcement-empty strong {
    display: block;
    font-size: var(--text-card-title);
    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);
    transition: opacity var(--transition-fast);
}

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

/*
============================================
分页
============================================
*/

.announcement-pagination {
    margin-top: var(--space-6);
}

/*
============================================
响应式布局
============================================
*/

@media (max-width: 1100px) {
    .announcement-hero,
    .announcement-shell {
        grid-template-columns: 1fr;
    }

    .announcement-hero__stats {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-4);
    }
}

@media (max-width: 980px) {
    .announcement-toolbar__grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 820px) {
    .announcement-stat-grid {
        grid-template-columns: 1fr;
    }

    .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;
    }
}

@media (max-width: 680px) {
    .announcement-page {
        padding: var(--space-8) var(--space-6) var(--space-16);
    }

    .announcement-toolbar {
        position: static;
    }

    .announcement-toolbar__grid,
    .announcement-shell,
    .announcement-hero {
        grid-template-columns: 1fr;
    }

    .announcement-toolbar__grid {
        grid-template-columns: 1fr 1fr;
    }

    .announcement-hero__stats {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 520px) {
    .announcement-toolbar__grid {
        grid-template-columns: 1fr;
    }

    .announcement-panel__head,
    .announcement-side-panel__head {
        padding-left: var(--space-6);
        padding-right: var(--space-6);
    }

    .announcement-list {
        padding: var(--space-4);
    }
}

/*
============================================
深色模式适配
============================================
*/

body.dark-theme .announcement-hero {
    background: linear-gradient(180deg, rgba(24, 226, 153, 0.08) 0%, rgba(13, 13, 13, 0) 60%);
}

body.dark-theme .announcement-panel,
body.dark-theme .announcement-toolbar,
body.dark-theme .announcement-card,
body.dark-theme .announcement-region-link,
body.dark-theme .announcement-stat {
    background: var(--color-gray-50);
    border-color: var(--color-border-subtle);
}

body.dark-theme .announcement-chip,
body.dark-theme .announcement-filter {
    background: var(--color-gray-50);
    border-color: var(--color-border-subtle);
    color: var(--color-gray-900);
}

body.dark-theme .announcement-toolbar__button {
    background: var(--color-white);
    color: var(--color-gray-900);
}

body.dark-theme .announcement-toolbar__link {
    background: transparent;
    border-color: var(--color-border-subtle);
}

body.dark-theme .announcement-quick__chips a {
    background: var(--color-gray-100);
}