/* 广告组件CSS - 徽章正确定位版本 + 对比度优化 */

/* ==================== 外层容器 ==================== */
.ad-component {
    width: 100%;
    margin: 20px auto;
    display: flex;
    justify-content: center;
    box-sizing: border-box;
    padding: 0 15px;
    max-width: 1400px;
}

/* ==================== 图片容器 - 徽章的父容器 ==================== */
.ad-component__content {
    width: 100%;
    max-width: 1200px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    position: relative; /* ✅ 关键：为内部absolute元素提供定位参考 */
    display: flex;
    justify-content: center;
    align-items: center;
    background: #f8f9fa;
}

/* ==================== 徽章 - 对比度优化 ==================== */
.ad-component__label {
    position: absolute;
    top: 12px;    /* 相对于.ad-component__content顶部 */
    right: 12px;  /* 相对于.ad-component__content右侧 */
    
    /* ✅ 对比度优化：深色背景，确保可读性 */
    background: rgba(30, 41, 59, 0.95); /* #1e293b - WCAG AAA: 12.68:1 */
    color: #ffffff;                     /* 纯白色 - 最高对比度 */
    
    padding: 6px 12px;                  /* ✅ 增加内边距，更好点击 */
    font-size: 13px;
    border-radius: 6px;
    font-weight: 700;                   /* ✅ 加粗字体提升可读性 */
    z-index: 1000;
    box-shadow: 0 3px 10px rgba(0,0,0,0.4); /* ✅ 加深阴影 */
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: 2px solid rgba(255,255,255,0.3); /* ✅ 加粗边框，增强可见性 */
    transition: all 0.3s ease;
    
    /* ✅ 提高可访问性 */
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-shadow: 0 1px 2px rgba(0,0,0,0.3);
}

/* ==================== 徽章悬停效果 ==================== */
.ad-component__label:hover {
    background: rgba(15, 23, 42, 0.95); /* #0f172a - 更深色 */
    color: #ffffff;
    transform: translateY(-1px);        /* ✅ 悬停上浮效果 */
    box-shadow: 0 5px 15px rgba(0,0,0,0.5);
    border-color: rgba(255,255,255,0.5);
    cursor: pointer;
}

/* ==================== 徽章焦点状态 ==================== */
.ad-component__label:focus {
    outline: 3px solid #3b82f6;         /* ✅ 清晰焦点轮廓 */
    outline-offset: 2px;
    background: rgba(30, 58, 138, 0.95); /* 焦点时蓝色调 */
}

/* ==================== 图片样式 ==================== */
.ad-component__image-wrapper {
    display: block;
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: relative;
    z-index: 1;
}

.ad-component__image {
    display: block;
    max-width: 100%;
    height: auto;
    margin: 0 auto;
    object-fit: contain;
    z-index: 1;
}

/* ==================== 广告类型 ==================== */
.ad-component.ad-type-square .ad-component__content {
    max-width: 400px;
    aspect-ratio: 1/1;
}

.ad-component.ad-type-banner .ad-component__content {
    max-width: 800px;
    aspect-ratio: 8/3;
}

.ad-component.ad-type-default .ad-component__content {
    max-width: 728px;
    aspect-ratio: 728/90;
}

.ad-component.ad-type-wide .ad-component__content {
    max-width: 1200px;
    aspect-ratio: 5/1;
}

/* ==================== 高对比度模式 ==================== */
@media (prefers-contrast: high) {
    .ad-component__label {
        background: #000000 !important;        /* 纯黑色 */
        color: #ffffff !important;            /* 纯白色 */
        border: 3px solid #ffffff !important; /* 粗白边 */
        font-weight: 900 !important;          /* 超粗体 */
        text-shadow: 0 2px 4px rgba(0,0,0,0.8) !important;
        box-shadow: 0 4px 12px rgba(0,0,0,0.7) !important;
    }
    
    .ad-component__content {
        border: 2px solid #000000; /* 容器边框 */
        box-shadow: 0 3px 10px rgba(0,0,0,0.3);
    }
}

/* ==================== 暗色模式 ==================== */
@media (prefers-color-scheme: dark) {
    .ad-component__content {
        background: #1e293b; /* 深色背景 */
        box-shadow: 0 2px 8px rgba(0,0,0,0.3);
    }
    
    .ad-component__label {
        background: rgba(30, 41, 59, 0.95); /* 深色背景 */
        color: #e2e8f0;                     /* 浅灰色文字 */
        border-color: rgba(226, 232, 240, 0.3);
        box-shadow: 0 3px 10px rgba(0,0,0,0.5);
    }
    
    .ad-component__label:hover {
        background: rgba(15, 23, 42, 0.95); /* 更深的背景 */
        color: #ffffff;
        border-color: rgba(255,255,255,0.5);
    }
}

/* ==================== 减少动画 ==================== */
@media (prefers-reduced-motion: reduce) {
    .ad-component__content,
    .ad-component__label {
        transition: none !important;
    }
    
    .ad-component__label:hover {
        transform: none !important;
    }
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .ad-component {
        margin: 15px auto;
        padding: 0 10px;
    }
    
    .ad-component__content {
        max-width: 100%;
        border-radius: 6px;
    }
    
    .ad-component__label {
        top: 10px;
        right: 10px;
        padding: 5px 10px;
        font-size: 12px;
        font-weight: 700;
        border-width: 1.5px;
    }
    
    .ad-component.ad-type-square .ad-component__content {
        max-width: 280px;
    }
}

@media (max-width: 480px) {
    .ad-component {
        margin: 12px auto;
        padding: 0 8px;
    }
    
    .ad-component__label {
        top: 8px;
        right: 8px;
        padding: 4px 8px;
        font-size: 11px;
        font-weight: 700;
        letter-spacing: 0.3px;
    }
    
    /* 小屏幕上增大标签可见性 */
    .ad-component__label {
        min-width: 60px;    /* 确保标签不因文字太短而太小 */
        text-align: center;
    }
    
    .ad-component.ad-type-square .ad-component__content {
        max-width: 250px;
    }
}

/* ==================== 超小屏幕优化 ==================== */
@media (max-width: 360px) {
    .ad-component__label {
        top: 6px;
        right: 6px;
        padding: 3px 6px;
        font-size: 10px;
        min-width: 50px;
    }
    
    /* 文字太小时使用更紧凑的标签 */
    .ad-component__label--compact {
        padding: 2px 4px !important;
        font-size: 9px !important;
        min-width: 40px !important;
    }
}

/* ==================== 打印样式 ==================== */
@media print {
    .ad-component {
        display: none; /* 打印时隐藏广告 */
    }
}