/* 首页特定样式 */

/* 导航栏样式 */
.header {
    justify-content: space-between;
}

.app-title {
    font-size: 18px;
    letter-spacing: 0.5px;
}

.search-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.2);
    cursor: pointer;
}

/* 分类筛选组件 */
.category-filter {
    height: 44px;
    background-color: white;
    overflow-x: auto;
    white-space: nowrap;
    padding: 0 12px;
    display: flex;
    align-items: center;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    cursor: grab;
    user-select: none;
}

.category-filter::-webkit-scrollbar {
    display: none;
}

.category-item {
    display: inline-block;
    background-color: #f0f0f0;
    color: #666;
    padding: 6px 16px;
    margin-right: 12px;
    border-radius: 16px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

.category-item.active {
    background-color: #FF4D4F;
    color: white;
}

/* 红包封面网格 */
.grid-container {
    padding: 16px 12px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

/* Tablet layout: 3 columns */
@media (min-width: 768px) {
    .grid-container {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* PC layout: auto-fill columns */
@media (min-width: 1200px) {
    .grid-container {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    }
}

/* 红包卡片样式 */
.envelope-card {
    background-color: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
}

.envelope-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
}

.envelope-card:active {
    transform: scale(0.98);
}

.envelope-image {
    width: 100%;
    height: 0;
    padding-bottom: 152%;
    position: relative;
    overflow: hidden;
    border-radius: 8px 8px 0 0;
}

.envelope-color-1 {
    background: linear-gradient(135deg, #FF4D4F, #FF7875);
}

.envelope-color-2 {
    background: linear-gradient(135deg, #FFCC00, #FFD666);
}

.envelope-color-3 {
    background: linear-gradient(135deg, #FF9500, #FFC069);
}

.envelope-color-4 {
    background: linear-gradient(135deg, #52C41A, #73D13D);
}

.envelope-color-5 {
    background: linear-gradient(135deg, #1890FF, #40A9FF);
}

.envelope-color-6 {
    background: linear-gradient(135deg, #722ED1, #9254DE);
}

.envelope-info {
    padding: 8px 10px;
    background-color: #FFFFFF;
}

.envelope-title {
    font-size: 14px;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.envelope-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: #999;
    flex-wrap: wrap;
    gap: 4px;
}

.envelope-tag {
    background-color: rgba(255, 77, 79, 0.1);
    color: #FF4D4F;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 10px;
}

.envelope-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
}