/**
 * 系统通告 - 海报模态风格（参考"蛙蛙创作狂欢节"）
 * ========================================================================
 * 视觉要点：
 *  - 外层橙粉渐变海报卡 + 光晕装饰
 *  - 顶部居中悬浮时间胶囊（半悬出卡片外）
 *  - Hero 区大号装饰 emoji + 渐变光影
 *  - 主标题渲染为红色实心胶囊 banner
 *  - 主体内容嵌入白色子卡，支持 ** 加粗红字 / ## 小节标题
 *  - level 切换渐变色（info/success/warning/error）
 */

/* ===== 遮罩层 ===== */
.announcement-popup-overlay {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px 20px;
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.announcement-popup-overlay.is-visible {
    opacity: 1;
}

/* ===== 外层海报卡片 ===== */
.announcement-popup-card {
    position: relative;
    width: 100%;
    max-width: 460px;
    max-height: calc(100vh - 48px);
    padding: 64px 18px 22px;
    /* 默认 error/促销红粉渐变（与图片一致） */
    background: linear-gradient(180deg, #ffa26b 0%, #ff7eb3 48%, #ff5e6c 100%);
    border-radius: 28px;
    box-shadow:
        0 30px 60px -12px rgba(255, 94, 108, 0.45),
        0 18px 38px -10px rgba(15, 23, 42, 0.35);
    transform: translateY(22px) scale(0.96);
    opacity: 0;
    transition: transform 0.36s cubic-bezier(0.22, 1, 0.36, 1),
                opacity 0.3s ease;
    display: flex;
    flex-direction: column;
    overflow: visible;
}

.announcement-popup-overlay.is-visible .announcement-popup-card {
    transform: translateY(0) scale(1);
    opacity: 1;
}

/* 外层光晕装饰 */
.announcement-popup-card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: 28px;
    background:
        radial-gradient(circle at 22% 16%, rgba(255, 255, 255, 0.28), transparent 38%),
        radial-gradient(circle at 82% 10%, rgba(255, 255, 255, 0.2), transparent 34%),
        radial-gradient(circle at 50% 92%, rgba(255, 255, 255, 0.18), transparent 40%);
    pointer-events: none;
    z-index: 0;
}

/* ===== level 渐变 ===== */
.announcement-level-info {
    background: linear-gradient(180deg, #6be29a 0%, #34d399 50%, #10b981 100%);
    box-shadow:
        0 30px 60px -12px rgba(16, 185, 129, 0.45),
        0 18px 38px -10px rgba(15, 23, 42, 0.35);
}
.announcement-level-success {
    background: linear-gradient(180deg, #6be29a 0%, #22c55e 50%, #10b981 100%);
    box-shadow:
        0 30px 60px -12px rgba(34, 197, 94, 0.4),
        0 18px 38px -10px rgba(15, 23, 42, 0.35);
}
.announcement-level-warning {
    background: linear-gradient(180deg, #ffd96a 0%, #ff9f43 50%, #ff6b35 100%);
    box-shadow:
        0 30px 60px -12px rgba(255, 107, 53, 0.42),
        0 18px 38px -10px rgba(15, 23, 42, 0.35);
}
.announcement-level-error {
    background: linear-gradient(180deg, #ffa26b 0%, #ff7eb3 48%, #ff5e6c 100%);
    box-shadow:
        0 30px 60px -12px rgba(255, 94, 108, 0.45),
        0 18px 38px -10px rgba(15, 23, 42, 0.35);
}

/* ===== 顶部时间胶囊（悬浮） ===== */
.announcement-card-timebadge {
    position: absolute;
    top: 18px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    padding: 7px 22px;
    background: linear-gradient(135deg, #ffffff 0%, #fff4f0 100%);
    color: #e11d48;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 1.2px;
    box-shadow:
        0 6px 14px rgba(225, 29, 72, 0.22),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    white-space: nowrap;
}
.announcement-level-info .announcement-card-timebadge { color: #059669; }
.announcement-level-success .announcement-card-timebadge { color: #059669; }
.announcement-level-warning .announcement-card-timebadge { color: #d97706; }

/* ===== 关闭按钮（右上圆形） ===== */
.announcement-card-close {
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 4;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    border: none;
    background: rgba(255, 255, 255, 0.85);
    color: #e11d48;
    font-size: 20px;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.22s ease;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}
.announcement-card-close:hover {
    background: #fff;
    transform: rotate(90deg) scale(1.05);
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.22);
}

/* ===== 置顶角标 ===== */
.announcement-card-pinned {
    position: absolute;
    top: 18px;
    left: 18px;
    z-index: 3;
    padding: 5px 12px 5px 10px;
    background: linear-gradient(135deg, #fde047 0%, #f59e0b 100%);
    color: #7c2d12;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 1px;
    border-radius: 4px 999px 999px 4px;
    box-shadow: 0 4px 10px rgba(245, 158, 11, 0.35);
}
.announcement-card-pinned::before {
    content: "📌";
    margin-right: 4px;
}

/* ===== Hero 装饰区 ===== */
.announcement-card-hero {
    position: relative;
    z-index: 1;
    padding: 4px 16px 0;
    text-align: center;
    min-height: 96px;
}

.announcement-card-hero-decor {
    font-size: 68px;
    line-height: 1;
    filter: drop-shadow(0 10px 18px rgba(0, 0, 0, 0.22));
    display: inline-block;
    animation: announcement-float 3.4s ease-in-out infinite;
}

@keyframes announcement-float {
    0%, 100% { transform: translateY(0) rotate(-2deg); }
    50%      { transform: translateY(-6px) rotate(2deg); }
}

/* ===== 主标题胶囊 ===== */
.announcement-card-titlebanner {
    position: relative;
    z-index: 1;
    display: block;
    margin: 18px 20px 0;
    padding: 12px 20px;
    background: linear-gradient(135deg, #ff4d4d 0%, #ff1744 100%);
    color: #fff;
    font-size: 20px;
    font-weight: 800;
    border-radius: 999px;
    text-align: center;
    letter-spacing: 2px;
    box-shadow:
        0 8px 16px rgba(255, 23, 68, 0.38),
        inset 0 1px 0 rgba(255, 255, 255, 0.35),
        inset 0 -2px 0 rgba(0, 0, 0, 0.1);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
    word-break: break-word;
    line-height: 1.3;
}
.announcement-level-info .announcement-card-titlebanner {
    background: linear-gradient(135deg, #10b981 0%, #047857 100%);
    box-shadow:
        0 8px 16px rgba(16, 185, 129, 0.38),
        inset 0 1px 0 rgba(255, 255, 255, 0.3),
        inset 0 -2px 0 rgba(0, 0, 0, 0.1);
}
.announcement-level-success .announcement-card-titlebanner {
    background: linear-gradient(135deg, #10b981 0%, #047857 100%);
    box-shadow:
        0 8px 16px rgba(16, 185, 129, 0.38),
        inset 0 1px 0 rgba(255, 255, 255, 0.3),
        inset 0 -2px 0 rgba(0, 0, 0, 0.1);
}
.announcement-level-warning .announcement-card-titlebanner {
    background: linear-gradient(135deg, #f59e0b 0%, #c2410c 100%);
    box-shadow:
        0 8px 16px rgba(245, 158, 11, 0.38),
        inset 0 1px 0 rgba(255, 255, 255, 0.3),
        inset 0 -2px 0 rgba(0, 0, 0, 0.1);
}

/* ===== 白色内容子卡 ===== */
.announcement-card-body {
    position: relative;
    z-index: 1;
    margin: 18px 4px 0;
    padding: 22px 22px 18px;
    background: #ffffff;
    border-radius: 20px;
    color: #1f2937;
    font-size: 14.5px;
    line-height: 1.78;
    word-break: break-word;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
    box-shadow:
        0 14px 28px -12px rgba(0, 0, 0, 0.18),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
}

.announcement-card-body::-webkit-scrollbar {
    width: 6px;
}
.announcement-card-body::-webkit-scrollbar-thumb {
    background: rgba(225, 29, 72, 0.25);
    border-radius: 999px;
}

/* 内容内 strong / **xxx** 渲染为红色加粗（海报常用强调） */
.announcement-card-body strong,
.announcement-card-body b {
    color: #e11d48;
    font-weight: 800;
}
.announcement-level-info .announcement-card-body strong,
.announcement-level-info .announcement-card-body b {
    color: #059669;
}
.announcement-level-success .announcement-card-body strong,
.announcement-level-success .announcement-card-body b {
    color: #059669;
}
.announcement-level-warning .announcement-card-body strong,
.announcement-level-warning .announcement-card-body b {
    color: #c2410c;
}

/* ## 小节标题（左右装饰线） */
.announcement-card-body h4 {
    margin: 20px 0 12px;
    color: #e11d48;
    font-size: 16px;
    font-weight: 800;
    text-align: center;
    letter-spacing: 1.5px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.announcement-card-body h4:first-child {
    margin-top: 0;
}
.announcement-card-body h4::before,
.announcement-card-body h4::after {
    content: "";
    flex: 1;
    height: 2px;
    background: linear-gradient(90deg, transparent, currentColor, transparent);
    opacity: 0.45;
}
.announcement-level-info .announcement-card-body h4 { color: #059669; }
.announcement-level-success .announcement-card-body h4 { color: #059669; }
.announcement-level-warning .announcement-card-body h4 { color: #c2410c; }

.announcement-card-body a {
    color: #e11d48;
    text-decoration: underline;
    text-underline-offset: 2px;
}
.announcement-card-body ul,
.announcement-card-body ol {
    padding-left: 22px;
    margin: 10px 0;
}
.announcement-card-body li { margin: 4px 0; }

/* ===== 元信息 ===== */
.announcement-card-meta {
    position: relative;
    z-index: 1;
    padding: 10px 18px 0;
    font-size: 12px;
    color: rgba(255, 255, 255, 0.95);
    text-align: center;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.18);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}
.announcement-card-meta span { opacity: 0.92; }

/* ===== 底部操作栏 ===== */
.announcement-card-footer {
    position: relative;
    z-index: 1;
    padding: 16px 12px 4px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
}

.announcement-card-dots {
    display: flex;
    gap: 6px;
    align-items: center;
}

.announcement-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    transition: all 0.22s ease;
    border: none;
    padding: 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}
.announcement-dot.is-active {
    width: 26px;
    border-radius: 999px;
    background: #ffffff;
}

.announcement-card-nav {
    display: flex;
    gap: 8px;
    flex: 1;
    justify-content: flex-end;
}

.announcement-nav-btn {
    appearance: none;
    border: none;
    background: rgba(255, 255, 255, 0.35);
    color: #ffffff;
    padding: 9px 20px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.22s ease;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    letter-spacing: 1px;
}
.announcement-nav-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.5);
    transform: translateY(-1px);
}
.announcement-nav-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.announcement-nav-btn.is-primary {
    background: linear-gradient(135deg, #ffffff 0%, #fff0f0 100%);
    color: #e11d48;
    box-shadow:
        0 8px 16px rgba(0, 0, 0, 0.18),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
    padding: 9px 26px;
}
.announcement-level-info .announcement-nav-btn.is-primary { color: #059669; }
.announcement-level-success .announcement-nav-btn.is-primary { color: #059669; }
.announcement-level-warning .announcement-nav-btn.is-primary { color: #c2410c; }

.announcement-nav-btn.is-primary:hover {
    transform: translateY(-2px);
    filter: brightness(1.03);
    box-shadow:
        0 10px 20px rgba(0, 0, 0, 0.22),
        inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

/* ===== 暗色主题适配 ===== */
@media (prefers-color-scheme: dark) {
    .announcement-card-body { background: #1e293b; color: #e2e8f0; }
    .announcement-card-body strong,
    .announcement-card-body b { color: #fda4af; }
    .announcement-level-info .announcement-card-body strong { color: #6ee7b7; }
    .announcement-level-success .announcement-card-body strong { color: #6ee7b7; }
    .announcement-level-warning .announcement-card-body strong { color: #fdba74; }
    .announcement-card-body h4 { color: #fda4af; }
    .announcement-level-info .announcement-card-body h4 { color: #6ee7b7; }
    .announcement-level-success .announcement-card-body h4 { color: #6ee7b7; }
    .announcement-level-warning .announcement-card-body h4 { color: #fdba74; }
}

[data-theme="dark"] .announcement-card-body { background: #1e293b; color: #e2e8f0; }
[data-theme="dark"] .announcement-card-body strong,
[data-theme="dark"] .announcement-card-body b { color: #fda4af; }
[data-theme="dark"] .announcement-level-info .announcement-card-body strong { color: #6ee7b7; }
[data-theme="dark"] .announcement-level-success .announcement-card-body strong { color: #6ee7b7; }
[data-theme="dark"] .announcement-level-warning .announcement-card-body strong { color: #fdba74; }
[data-theme="dark"] .announcement-card-body h4 { color: #fda4af; }
[data-theme="dark"] .announcement-level-info .announcement-card-body h4 { color: #6ee7b7; }
[data-theme="dark"] .announcement-level-success .announcement-card-body h4 { color: #6ee7b7; }
[data-theme="dark"] .announcement-level-warning .announcement-card-body h4 { color: #fdba74; }

/* ===== 移动端 ===== */
@media (max-width: 520px) {
    .announcement-popup-overlay { padding: 16px 12px; }
    .announcement-popup-card {
        border-radius: 22px;
        padding: 56px 14px 18px;
        max-height: calc(100vh - 32px);
    }
    .announcement-popup-card::before { border-radius: 22px; }
    .announcement-card-hero-decor { font-size: 56px; }
    .announcement-card-titlebanner {
        font-size: 17px;
        padding: 10px 16px;
        letter-spacing: 1.4px;
        margin: 14px 8px 0;
    }
    .announcement-card-body {
        padding: 18px 16px 14px;
        font-size: 14px;
        border-radius: 16px;
        margin: 14px 0 0;
    }
    .announcement-card-timebadge { font-size: 12px; padding: 6px 16px; }
    .announcement-card-close { top: 12px; right: 12px; width: 30px; height: 30px; font-size: 18px; }
    .announcement-card-pinned { top: 14px; left: 12px; font-size: 10px; }
    .announcement-card-footer { padding: 14px 4px 0; }
    .announcement-nav-btn { padding: 8px 14px; font-size: 12px; }
    .announcement-nav-btn.is-primary { padding: 8px 18px; }
}