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

/* 卡片样式 */
.card {
    border-radius: 10px;
    transition: transform 0.3s, box-shadow 0.3s;
}

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

/* 统计卡片 */
.stat-card {
    border-radius: 8px;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border: 1px solid #dee2e6;
}

/* 功能图标 */
.feature-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background-color: rgba(13, 110, 253, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

/* 图标圆圈 */
.icon-circle {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 导航栏活动状态指示 */
.nav-link.active {
    font-weight: 600;
    position: relative;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background-color: #0d6efd;
    border-radius: 2px;
}

/* 表格样式 */
.table-hover tbody tr:hover {
    background-color: rgba(13, 110, 253, 0.05);
}

/* 视频播放器样式 */
.video-placeholder {
    width: 100%;
    height: 500px;
    background: linear-gradient(135deg, #2c3e50 0%, #4a6491 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px 10px 0 0;
}

.placeholder-content {
    text-align: center;
    color: white;
}

.placeholder-content i {
    color: rgba(255, 255, 255, 0.7);
}

.simulated-video {
    width: 100%;
    height: 500px;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    position: relative;
    overflow: hidden;
    border-radius: 10px 10px 0 0;
}

.video-header {
    position: absolute;
    top: 15px;
    left: 15px;
    z-index: 10;
}

.detection-box {
    position: absolute;
    border: 2px solid #0d6efd;
    border-radius: 4px;
    animation: pulse 2s infinite;
}

.detection-box::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border: 1px solid rgba(255, 255, 255, 0.5);
    border-radius: 4px;
    animation: pulse-border 2s infinite;
}

.box-label {
    position: absolute;
    top: -25px;
    left: -2px;
    background-color: #0d6efd;
    color: white;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
}

.video-info {
    position: absolute;
    bottom: 60px;
    left: 15px;
    display: flex;
    gap: 15px;
    z-index: 10;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 5px;
    color: white;
    font-size: 14px;
    background-color: rgba(0, 0, 0, 0.5);
    padding: 5px 10px;
    border-radius: 4px;
}

.fps-display {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: rgba(0, 0, 0, 0.5);
    color: white;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 14px;
    z-index: 10;
}

.video-controls {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 20;
}

.controls-bg {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 60px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
}

.controls-content {
    position: relative;
    padding: 15px;
}

/* 动画 */
@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(13, 110, 253, 0.7);
    }
    70% {
        box-shadow: 0 0 0 10px rgba(13, 110, 253, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(13, 110, 253, 0);
    }
}

@keyframes pulse-border {
    0% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
    100% {
        opacity: 1;
    }
}

/* 流列表项 */
.list-group-item.active {
    background-color: rgba(13, 110, 253, 0.1);
    border-color: rgba(13, 110, 253, 0.2);
    color: #0d6efd;
}

/* 按钮样式 */
.btn {
    border-radius: 6px;
    font-weight: 500;
}

.btn-lg {
    padding: 0.75rem 1.5rem;
}

/* 页脚样式 */
footer {
    margin-top: auto;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .video-placeholder,
    .simulated-video {
        height: 300px;
    }
    
    .video-info {
        flex-direction: column;
        gap: 5px;
    }
    
    .feature-icon {
        width: 50px;
        height: 50px;
    }
    
    .icon-circle {
        width: 40px;
        height: 40px;
    }
}