/* 全局样式 */
:root {
    --primary-color: #007bff;
    --hover-color: #0056b3;
    --bg-gradient: linear-gradient(136deg, #c6ffdd, #fbd786, #f6a4a7);
}

body {
    background: var(--bg-gradient);
    min-height: 100vh;
    font-family -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Segoe UI, Arial, Roboto, "PingFang SC", "miui", "Hiragino Sans GB", "Microsoft Yahei", sans-serif;
}

/* 导航栏样式 */
.navbar {
    background: linear-gradient(to right, #1a1c20, #2d3436) !important;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: 700;
    background: linear-gradient(45deg, #00ff87, #60efff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* 卡片样式 */
.card {
    border: none;
    border-radius: 15px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.card-img-top {
    height: 200px;
    object-fit: cover;
}

.card-body {
    padding: 1.25rem;
}

.card-title {
    color: #2d3436;
    font-weight: 600;
}

/* 视频播放器样式 */
.card-img-top.ratio {
    width: 100%;
    background: #000;
}

.card-img-top.ratio video {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

/* 修复视频容器在卡片中的显示 */
.card {
    overflow: hidden;
}

.card video {
    width: 100%;
    height: auto;
    display: block;
}

/* 按钮样式 */
.btn-primary {
    background: linear-gradient(45deg, var(--primary-color), var(--hover-color));
    border: none;
    border-radius: 20px;
    padding: 0.5rem 1.5rem;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0,123,255,0.4);
}

/* 搜索框样式 */
.form-control {
    border-radius: 20px;
    border: 1px solid rgba(0,0,0,0.1);
    padding: 0.5rem 1rem;
}

.form-control:focus {
    box-shadow: 0 0 0 0.2rem rgba(0,123,255,0.25);
}

/* 页脚样式 */
footer {
    background: linear-gradient(to right, #1a1c20, #2d3436) !important;
    margin-top: auto;
}

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

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

/* 响应式布局 */
@media (max-width: 768px) {
    .row-cols-md-4 > * {
        flex: 0 0 50%;
        max-width: 50%;
    }
}

@media (max-width: 576px) {
    .row-cols-md-4 > * {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

/* 图片预览效果 */
.hover-shadow:hover {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
}

/* 广告区域样式 */
.alert-info {
    background: rgba(255, 255, 255, 0.9);
    border-left: 4px solid var(--primary-color);
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}