/* B2 VIP Freebie Manager - 前端样式 */

/* 限免页面容器 */
.b2-freebie-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* 限免页面头部 */
.freebie-header {
    text-align: center;
    margin-bottom: 40px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 40px 20px;
    border-radius: 12px;
}

.freebie-header h1 {
    font-size: 2.5em;
    margin-bottom: 15px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.freebie-header p {
    font-size: 1.2em;
    opacity: 0.9;
    margin-bottom: 20px;
}

.freebie-stats {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 20px;
}

.stat-item {
    text-align: center;
}

.stat-item strong {
    display: block;
    font-size: 1.8em;
    color: #fff;
    margin-bottom: 5px;
}

.stat-item span {
    opacity: 0.8;
    font-size: 0.9em;
}

/* 限免网格布局 */
.freebie-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 25px;
    margin: 30px 0;
}

/* 限免项目卡片 */
.freebie-item {
    background: #fff;
    border: 1px solid #e1e1e1;
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.freebie-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, #ff6b6b, #ee5a52);
}

.freebie-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    border-color: #ff6b6b;
}

/* 限免缩略图 */
.freebie-thumbnail {
    position: relative;
    margin-bottom: 15px;
    border-radius: 8px;
    overflow: hidden;
}

.freebie-thumbnail img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.freebie-item:hover .freebie-thumbnail img {
    transform: scale(1.05);
}

.freebie-badge-overlay {
    position: absolute;
    top: 10px;
    right: 10px;
}

.freebie-badge {
    background: linear-gradient(135deg, #ff6b6b, #ee5a52);
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
    box-shadow: 0 2px 8px rgba(255,107,107,0.3);
}

/* 限免内容 */
.freebie-content h3 {
    margin: 0 0 12px 0;
    font-size: 1.2em;
    line-height: 1.4;
}

.freebie-content h3 a {
    text-decoration: none;
    color: #333;
    transition: color 0.3s ease;
}

.freebie-content h3 a:hover {
    color: #ff6b6b;
}

.freebie-content p {
    color: #666;
    font-size: 0.95em;
    line-height: 1.6;
    margin: 0 0 15px 0;
}

/* 限免元信息 */
.freebie-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85em;
    color: #888;
    margin-bottom: 15px;
    padding: 10px 0;
    border-top: 1px solid #f0f0f0;
}

.freebie-timer {
    color: #ff6b6b;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 5px;
}

.countdown {
    background: rgba(255,107,107,0.1);
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.9em;
}

/* 限免操作按钮 */
.freebie-action {
    text-align: center;
    margin-top: 15px;
}

.freebie-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    background: linear-gradient(135deg, #ff6b6b, #ee5a52);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: bold;
    font-size: 0.95em;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(255,107,107,0.3);
    border: none;
    cursor: pointer;
}

.freebie-btn:hover {
    background: linear-gradient(135deg, #ee5a52, #d84949);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255,107,107,0.4);
    color: white;
}

/* 限免通知 */
.b2-freebie-notice {
    background: linear-gradient(135deg, #ff6b6b, #ee5a52);
    color: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 25px;
    text-align: center;
    box-shadow: 0 4px 15px rgba(255,107,107,0.2);
}

.b2-freebie-notice h4 {
    margin: 0 0 10px 0;
    color: white;
    font-size: 1.2em;
}

.b2-freebie-notice p {
    margin: 0;
    opacity: 0.95;
}

/* 分页样式 */
.freebie-pagination {
    margin-top: 40px;
    text-align: center;
}

.freebie-pagination .page-numbers {
    display: inline-block;
    padding: 10px 15px;
    margin: 0 3px;
    background: #fff;
    border: 1px solid #ddd;
    border-radius: 5px;
    color: #666;
    text-decoration: none;
    transition: all 0.3s ease;
}

.freebie-pagination .page-numbers:hover,
.freebie-pagination .page-numbers.current {
    background: #ff6b6b;
    border-color: #ff6b6b;
    color: white;
}

/* 空状态 */
.no-freebies {
    text-align: center;
    padding: 80px 20px;
    color: #666;
}

.no-freebies div:first-child {
    font-size: 4em;
    margin-bottom: 20px;
    opacity: 0.5;
}

.no-freebies h3 {
    color: #888;
    margin-bottom: 10px;
}

/* 筛选器 */
.freebie-filters {
    margin-bottom: 30px;
    text-align: center;
}

.filter-buttons {
    display: inline-flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
}

.filter-btn {
    padding: 8px 16px;
    border: 1px solid #ddd;
    background: #fff;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 14px;
    text-decoration: none;
    color: #666;
}

.filter-btn:hover,
.filter-btn.active {
    background: #ff6b6b;
    border-color: #ff6b6b;
    color: white;
}

/* 限免文章标识（文章页面） */
.b2-freebie-post {
    position: relative;
}

.b2-freebie-post::before {
    content: '🎁 限免';
    position: absolute;
    top: -5px;
    right: -5px;
    background: linear-gradient(135deg, #ff6b6b, #ee5a52);
    color: white;
    padding: 3px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: bold;
    z-index: 10;
}

.b2-freebie-ending-soon::before {
    content: '🎁 即将结束';
    background: linear-gradient(135deg, #ffa726, #ff9800);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .b2-freebie-container {
        padding: 15px;
    }
    
    .freebie-header {
        padding: 30px 20px;
    }
    
    .freebie-header h1 {
        font-size: 2em;
    }
    
    .freebie-stats {
        flex-direction: column;
        gap: 15px;
    }
    
    .freebie-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .freebie-meta {
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }
    
    .filter-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .freebie-pagination .page-numbers {
        padding: 8px 12px;
        margin: 0 2px;
    }
}

@media (max-width: 480px) {
    .freebie-header h1 {
        font-size: 1.5em;
    }
    
    .freebie-item {
        padding: 15px;
    }
    
    .freebie-thumbnail img {
        height: 150px;
    }
    
    .freebie-btn {
        padding: 10px 20px;
        font-size: 0.9em;
    }
}

/* 加载动画 */
.freebie-loading {
    text-align: center;
    padding: 40px 20px;
}

.freebie-loading::after {
    content: '';
    display: inline-block;
    width: 30px;
    height: 30px;
    border: 3px solid rgba(255,107,107,0.3);
    border-radius: 50%;
    border-top-color: #ff6b6b;
    animation: freebie-spin 1s ease-in-out infinite;
}

@keyframes freebie-spin {
    to { transform: rotate(360deg); }
}

/* 特殊效果 */
.freebie-item.featured {
    background: linear-gradient(135deg, rgba(255,107,107,0.05), rgba(238,90,82,0.05));
    border-color: #ff6b6b;
}

.freebie-item.featured::before {
    height: 6px;
    background: linear-gradient(90deg, #ff6b6b, #ee5a52, #ff6b6b);
}

/* 工具提示 */
.freebie-tooltip {
    position: relative;
    cursor: help;
}

.freebie-tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    padding: 5px 10px;
    background: rgba(0,0,0,0.8);
    color: white;
    font-size: 12px;
    border-radius: 4px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    z-index: 1000;
}

.freebie-tooltip:hover::after {
    opacity: 1;
}