/* 全局样式 */
body {
    background-color: #f8f9fa;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

.container {
    max-width: 1200px;
    padding: 0 15px;
}

/* 搜索框样式 */
.search-box {
    margin-top: 20px;
    transition: all 0.3s ease;
}

.search-box:focus-within {
    transform: scale(1.01);
}

/* 结果卡片容器 */
.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
}

@media (max-width: 768px) {
    .card-container {
        grid-template-columns: 1fr;
    }
}

/* 结果卡片样式 */
.result-card {
    background: white;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    cursor: pointer;
}

.result-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.12);
}

.card-body {
    padding: 20px;
}

.card-title {
    font-size: 1.1rem;
    font-weight: bold;
    margin-bottom: 10px;
    color: #2c3e50;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
}

.card-time {
    color: #6c757d;
    font-size: 0.85rem;
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.result-card {
    animation: fadeIn 0.5s ease forwards;
}

/* 响应式调整 */
@media (max-width: 576px) {
    .display-4 {
        font-size: 2rem;
    }
    
    .lead {
        font-size: 1rem;
    }
}