/**
 * 公告组件样式 - 精美优化版
 * @author ningning.cheng
 */

/* ========== 公告图标按钮 ========== */
.announcement-btn {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    padding: 0;
    margin-right: 8px;
    background: var(--glass-bg-light);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    color: var(--text-color);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-sm);
}

.announcement-btn:hover {
    background: var(--primary-gradient-soft);
    border-color: var(--primary-color);
    color: var(--primary-color);
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

.announcement-btn:active {
    transform: translateY(0);
}

.announcement-btn svg {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-base);
}

.announcement-btn:hover svg {
    transform: scale(1.1);
}

/* 铃铛响动动画（收到新公告时） */
.announcement-bell-ring {
    animation: announcement-bell-ring 0.5s ease-in-out;
}

@keyframes announcement-bell-ring {
    0%, 100% {
        transform: rotate(0deg);
    }
    10%, 30%, 50%, 70%, 90% {
        transform: rotate(-10deg);
    }
    20%, 40%, 60%, 80% {
        transform: rotate(10deg);
    }
}

/* 未读数量红点 */
.announcement-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 20px;
    height: 20px;
    padding: 0 5px;
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: white;
    font-size: 11px;
    font-weight: 700;
    line-height: 20px;
    text-align: center;
    border-radius: 10px;
    border: 2.5px solid var(--bg-color);
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.4), 0 0 0 2px rgba(239, 68, 68, 0.1);
    animation: announcement-badge-pulse 2s ease-in-out infinite;
    z-index: 1;
}

@keyframes announcement-badge-pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 2px 8px rgba(239, 68, 68, 0.4), 0 0 0 2px rgba(239, 68, 68, 0.1);
    }
    50% {
        transform: scale(1.15);
        box-shadow: 0 4px 12px rgba(239, 68, 68, 0.6), 0 0 0 4px rgba(239, 68, 68, 0.2);
    }
}

/* ========== 公告模态框 ========== */
.announcement-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    z-index: var(--z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    animation: announcement-modal-fade-in 0.25s ease;
}

@keyframes announcement-modal-fade-in {
    from {
        opacity: 0;
        backdrop-filter: blur(0px);
    }
    to {
        opacity: 1;
        backdrop-filter: blur(8px);
    }
}

.announcement-modal {
    width: 100%;
    max-width: 720px;
    max-height: 90vh;
    background: var(--glass-bg-strong);
    backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border-strong);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-2xl), var(--shadow-glow-strong);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: announcement-modal-slide-up 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes announcement-modal-slide-up {
    from {
        transform: translateY(30px) scale(0.95);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

.announcement-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-lg);
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.05) 0%, rgba(6, 182, 212, 0.05) 100%);
    border-bottom: 1px solid var(--border-light);
    position: relative;
}

.announcement-modal-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    opacity: 0.3;
}

.announcement-modal-title {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: var(--font-bold);
    color: var(--text-color);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.announcement-modal-close {
    width: 36px;
    height: 36px;
    padding: 0;
    background: var(--glass-bg);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-color-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-xs);
}

.announcement-modal-close:hover {
    background: rgba(239, 68, 68, 0.1);
    border-color: #ef4444;
    color: #ef4444;
    transform: rotate(90deg);
    box-shadow: var(--shadow-sm);
}

.announcement-modal-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-xl);
    background: var(--bg-primary);
}

/* ========== 公告列表 ========== */
.announcement-list {
    min-height: 200px;
}

/* ========== 公告操作栏 ========== */
.announcement-actions-bar {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--glass-bg) 0%, var(--glass-bg-strong) 100%);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.announcement-actions-bar .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-xs);
}

.announcement-actions-bar .btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.announcement-actions-bar .btn-primary {
    background: var(--primary-gradient);
    color: white;
    border: none;
}

.announcement-actions-bar .btn-primary:hover {
    background: var(--primary-gradient-hover);
    box-shadow: var(--shadow-md), var(--shadow-glow);
    transform: translateY(-1px);
}

.announcement-actions-bar .btn-primary:active {
    transform: translateY(0);
}

.announcement-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4xl) var(--spacing-xl);
    color: var(--text-color-secondary);
}

.announcement-empty-icon {
    font-size: 64px;
    margin-bottom: var(--spacing-lg);
    opacity: 0.4;
    filter: grayscale(0.3);
    animation: announcement-empty-float 3s ease-in-out infinite;
}

@keyframes announcement-empty-float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.announcement-empty p {
    font-size: var(--font-size-base);
    color: var(--text-tertiary);
    margin: 0;
}

.announcement-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* ========== 已读公告区域 ========== */
.read-announcements-section {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 2px dashed var(--border-light);
    position: relative;
}

.read-announcements-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 2px;
    background: var(--primary-gradient);
    border-radius: 2px;
}

.read-announcements-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--glass-bg) 0%, var(--glass-bg-strong) 100%);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    user-select: none;
    box-shadow: var(--shadow-xs);
}

.read-announcements-toggle:hover {
    background: linear-gradient(135deg, var(--primary-gradient-soft) 0%, var(--glass-bg-strong) 100%);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md), var(--shadow-glow);
    transform: translateY(-1px);
}

.read-announcements-toggle:active {
    transform: translateY(0);
}

.read-announcements-toggle-text {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-base);
    font-weight: var(--font-semibold);
    color: var(--text-color);
    transition: color var(--transition-base);
}

.read-announcements-toggle:hover .read-announcements-toggle-text {
    color: var(--primary-color);
}

.read-announcements-toggle svg {
    transition: transform var(--transition-base);
    flex-shrink: 0;
}

.read-announcements-list {
    animation: announcement-slide-down 0.3s ease;
    margin-top: var(--spacing-sm);
}

@keyframes announcement-slide-down {
    from {
        opacity: 0;
        transform: translateY(-10px);
        max-height: 0;
    }
    to {
        opacity: 1;
        transform: translateY(0);
        max-height: 5000px;
    }
}

/* 已读公告列表样式优化 */
.read-announcements-list .announcement-item {
    opacity: 0.85;
}

.read-announcements-list .announcement-item:hover {
    opacity: 1;
}

.announcement-item {
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.announcement-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.announcement-item:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md), var(--shadow-glow);
    transform: translateY(-2px);
    background: var(--glass-bg-strong);
}

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

.announcement-item.unread {
    border-left: 4px solid var(--primary-color);
    background: linear-gradient(135deg, var(--primary-gradient-soft) 0%, var(--glass-bg) 100%);
    box-shadow: var(--shadow-card);
}

.announcement-item.unread::before {
    opacity: 1;
}

.announcement-item.unread:hover {
    box-shadow: var(--shadow-card-hover), var(--shadow-glow);
}

.announcement-item.read {
    opacity: 0.75;
    background: var(--bg-secondary);
}

.announcement-item.read:hover {
    opacity: 1;
}

.announcement-item-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    cursor: pointer;
    user-select: none;
}

.announcement-item-header:hover {
    opacity: 0.8;
}

.announcement-item-title-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex: 1;
    flex-wrap: wrap;
}

.announcement-item-title {
    margin: 0;
    font-size: var(--font-size-base);
    font-weight: var(--font-semibold);
    color: var(--text-color);
    flex: 1;
    min-width: 0;
    line-height: var(--leading-tight);
    transition: color var(--transition-base);
}

.announcement-item:hover .announcement-item-title {
    color: var(--primary-color);
}

.announcement-item-badges {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.announcement-item-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    flex-shrink: 0;
}

.announcement-expand-btn {
    width: 24px;
    height: 24px;
    padding: 0;
    background: transparent;
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-color-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-base);
    opacity: 0.6;
}

.announcement-expand-btn:hover {
    background: var(--hover-bg);
    color: var(--primary-color);
    opacity: 1;
}

.announcement-expand-btn svg {
    transition: transform var(--transition-base);
}

.announcement-unread-dot {
    width: 10px;
    height: 10px;
    background: var(--primary-gradient);
    border-radius: 50%;
    flex-shrink: 0;
    box-shadow: 0 0 8px rgba(14, 165, 233, 0.6);
    animation: announcement-dot-pulse 2s ease-in-out infinite;
    position: relative;
}

.announcement-unread-dot::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: var(--primary-color);
    animation: announcement-dot-ripple 2s ease-out infinite;
}

@keyframes announcement-dot-pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.8;
    }
}

@keyframes announcement-dot-ripple {
    0% {
        transform: translate(-50%, -50%) scale(1);
        opacity: 0.8;
    }
    100% {
        transform: translate(-50%, -50%) scale(2);
        opacity: 0;
    }
}

.announcement-item-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    gap: var(--spacing-sm);
}

.announcement-item-read {
    color: var(--accent-emerald);
    font-weight: var(--font-medium);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.announcement-item-read::before {
    content: '✓';
    display: inline-block;
    width: 14px;
    height: 14px;
    background: var(--accent-emerald);
    color: white;
    border-radius: 50%;
    font-size: 10px;
    line-height: 14px;
    text-align: center;
    font-weight: bold;
}

.announcement-item-content {
    margin-top: var(--spacing-xs);
    transition: all var(--transition-base);
    overflow: hidden;
}

.announcement-item-content.collapsed-content {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
    margin-bottom: 0;
    padding-top: 0;
    padding-bottom: 0;
    overflow: hidden;
}

/* 已读公告收起状态 */
.announcement-item.read.collapsed {
    padding-bottom: var(--spacing-md);
}

.announcement-item.read.collapsed .announcement-item-header {
    margin-bottom: var(--spacing-xs);
}

.announcement-item.read.collapsed .announcement-item-meta {
    margin-bottom: 0;
}

.announcement-item-content {
    margin-top: var(--spacing-xs);
    transition: all var(--transition-base);
    overflow: hidden;
}

.announcement-item-content.collapsed-content {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
    margin-bottom: 0;
    padding-top: 0;
    padding-bottom: 0;
    overflow: hidden;
}

.announcement-item-preview {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.announcement-item.expanded .announcement-item-preview {
    display: block;
    -webkit-line-clamp: unset;
    -webkit-box-orient: unset;
}

.announcement-item-actions-bottom {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-light);
}

.announcement-item.collapsed .announcement-item-actions-bottom {
    display: none;
}

/* 已读公告收起状态的优化 */
.announcement-item.read.collapsed {
    padding-bottom: var(--spacing-md);
    cursor: pointer;
}

.announcement-item.read.collapsed:hover {
    background: var(--glass-bg-strong);
}

.announcement-item.read.collapsed .announcement-item-header {
    margin-bottom: var(--spacing-xs);
}

.announcement-item.read.collapsed .announcement-item-meta {
    margin-bottom: 0;
}

/* ========== 公告类型和优先级标识 ========== */
.announcement-type-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-xs);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.announcement-type-badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.announcement-type-badge:hover::before {
    left: 100%;
}

.announcement-type-badge.type-NOTICE {
    background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 100%);
    color: #0369a1;
    border: 1px solid rgba(3, 105, 161, 0.2);
}

.announcement-type-badge.type-MAINTENANCE {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #92400e;
    border: 1px solid rgba(146, 64, 14, 0.2);
}

.announcement-type-badge.type-UPDATE {
    background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
    color: #1e40af;
    border: 1px solid rgba(30, 64, 175, 0.2);
}

.announcement-priority-badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-semibold);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-xs);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.announcement-priority-badge::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.announcement-priority-badge:hover::before {
    left: 100%;
}

.announcement-priority-badge.priority-0 {
    background: linear-gradient(135deg, #f3f4f6 0%, #e5e7eb 100%);
    color: #6b7280;
    border: 1px solid rgba(107, 114, 128, 0.2);
}

.announcement-priority-badge.priority-1 {
    background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
    color: #92400e;
    border: 1px solid rgba(146, 64, 14, 0.2);
}

.announcement-priority-badge.priority-2 {
    background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
    color: #991b1b;
    border: 1px solid rgba(153, 27, 27, 0.2);
    animation: announcement-priority-urgent 2s ease-in-out infinite;
}

@keyframes announcement-priority-urgent {
    0%, 100% {
        box-shadow: var(--shadow-xs);
    }
    50% {
        box-shadow: 0 0 12px rgba(239, 68, 68, 0.4), var(--shadow-xs);
    }
}

/* ========== 公告详情 ========== */
.announcement-detail {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.announcement-detail-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-light);
    position: relative;
}

.announcement-detail-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    opacity: 0.2;
}

.announcement-detail-back {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    color: var(--text-color);
    font-size: var(--font-size-sm);
    font-weight: var(--font-medium);
    cursor: pointer;
    transition: all var(--transition-base);
    box-shadow: var(--shadow-xs);
}

.announcement-detail-back:hover {
    background: var(--primary-gradient-soft);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateX(-2px);
    box-shadow: var(--shadow-sm);
}

.announcement-detail-back svg {
    transition: transform var(--transition-base);
}

.announcement-detail-back:hover svg {
    transform: translateX(-2px);
}

.announcement-detail-badges {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.announcement-detail-content {
    flex: 1;
    overflow-y: auto;
    margin-bottom: var(--spacing-xl);
}

.announcement-detail-title {
    margin: 0 0 var(--spacing-lg) 0;
    font-size: var(--font-size-2xl);
    font-weight: var(--font-bold);
    color: var(--text-color);
    line-height: var(--leading-tight);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.announcement-detail-meta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    box-shadow: var(--shadow-sm);
}

.announcement-detail-meta span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) 0;
}

.announcement-detail-meta svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    color: var(--primary-color);
    opacity: 0.7;
}

.announcement-detail-body {
    font-size: var(--font-size-base);
    line-height: var(--leading-relaxed);
    color: var(--text-color);
    white-space: pre-wrap;
    word-wrap: break-word;
    padding: var(--spacing-lg);
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
}

.announcement-detail-body p {
    margin: 0 0 var(--spacing-md) 0;
}

.announcement-detail-body p:last-child {
    margin-bottom: 0;
}

.announcement-detail-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-light);
    position: relative;
}

.announcement-detail-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    opacity: 0.2;
}

/* ========== 响应式设计 ========== */
@media (max-width: 768px) {
    .announcement-modal {
        max-width: 100%;
        max-height: 100vh;
        border-radius: 0;
        margin: 0;
    }

    .announcement-modal-overlay {
        padding: 0;
    }

    .announcement-modal-header {
        padding: var(--spacing-lg);
    }

    .announcement-modal-title {
        font-size: var(--font-size-lg);
    }

    .announcement-modal-body {
        padding: var(--spacing-lg);
    }

    .announcement-item {
        padding: var(--spacing-md);
    }

    .announcement-item-title-row {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }

    .announcement-item-badges {
        width: 100%;
        margin-top: var(--spacing-xs);
    }

    .announcement-detail-title {
        font-size: var(--font-size-xl);
    }

    .announcement-detail-meta {
        padding: var(--spacing-md);
    }

    .announcement-detail-body {
        padding: var(--spacing-md);
    }

    .announcement-detail-footer {
        flex-direction: column-reverse;
        gap: var(--spacing-sm);
    }

    .announcement-detail-footer .btn {
        width: 100%;
    }
}

/* ========== 暗色主题适配 ========== */
@media (prefers-color-scheme: dark) {
    .announcement-modal {
        background: rgba(30, 41, 59, 0.95);
        border-color: rgba(255, 255, 255, 0.1);
    }

    .announcement-modal-header {
        background: linear-gradient(135deg, rgba(14, 165, 233, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
    }

    .announcement-item {
        background: rgba(30, 41, 59, 0.6);
        border-color: rgba(255, 255, 255, 0.1);
    }

    .announcement-item.unread {
        background: linear-gradient(135deg, rgba(14, 165, 233, 0.15) 0%, rgba(30, 41, 59, 0.6) 100%);
    }

    .announcement-item.read {
        background: rgba(15, 23, 42, 0.6);
    }

    .announcement-type-badge.type-NOTICE {
        background: linear-gradient(135deg, rgba(14, 165, 233, 0.25) 0%, rgba(6, 182, 212, 0.25) 100%);
        color: #7dd3fc;
        border-color: rgba(125, 211, 252, 0.3);
    }

    .announcement-type-badge.type-MAINTENANCE {
        background: linear-gradient(135deg, rgba(251, 191, 36, 0.25) 0%, rgba(245, 158, 11, 0.25) 100%);
        color: #fcd34d;
        border-color: rgba(252, 211, 77, 0.3);
    }

    .announcement-type-badge.type-UPDATE {
        background: linear-gradient(135deg, rgba(59, 130, 246, 0.25) 0%, rgba(37, 99, 235, 0.25) 100%);
        color: #93c5fd;
        border-color: rgba(147, 197, 253, 0.3);
    }

    .announcement-priority-badge.priority-0 {
        background: linear-gradient(135deg, rgba(156, 163, 175, 0.25) 0%, rgba(107, 114, 128, 0.25) 100%);
        color: #d1d5db;
        border-color: rgba(209, 213, 219, 0.3);
    }

    .announcement-priority-badge.priority-1 {
        background: linear-gradient(135deg, rgba(251, 191, 36, 0.25) 0%, rgba(245, 158, 11, 0.25) 100%);
        color: #fcd34d;
        border-color: rgba(252, 211, 77, 0.3);
    }

    .announcement-priority-badge.priority-2 {
        background: linear-gradient(135deg, rgba(239, 68, 68, 0.25) 0%, rgba(220, 38, 38, 0.25) 100%);
        color: #fca5a5;
        border-color: rgba(252, 165, 165, 0.3);
    }

    .announcement-detail-meta {
        background: rgba(30, 41, 59, 0.6);
        border-color: rgba(255, 255, 255, 0.1);
    }

    .announcement-detail-body {
        background: rgba(15, 23, 42, 0.6);
        border-color: rgba(255, 255, 255, 0.1);
    }
}