.model-card {
    margin-bottom: 0.5rem;
    transition: transform 0.2s, box-shadow 0.2s;
    cursor: pointer;
    height: calc(100% - 1.5rem);
    display: flex;
    flex-direction: column;
    background-color: #f0f2f4;
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.model-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.model-card.dragging {
    opacity: 0.5;
    transform: scale(0.95);
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

.model-preview {
    width: 100%;
       padding-top: 70.5%; /* 放大一倍的16:9比例 */

    background-color: #e9ecef;
    border-radius: 4px 4px 0 0;
    overflow: hidden;
    position: relative;
    flex: 1;
}

.model-preview canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100% !important;
    height: 100% !important;
    outline: none;
}

.model-preview img.model-thumbnail {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    background-color: #f8f9fa;
}

.model-preview .loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #6c757d;
}

.card-body {
    padding: 0.75rem;
    flex-shrink: 0;
    background-color: #f0f2f4;
    border-top: 1px solid #e9ecef;
}

.card-body h5.card-title {
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    color: #212529;
}

.card-body p.card-text {
    margin-bottom: 0.25rem;
    line-height: 1.2;
}

.model-metadata {
    font-size: 0.75rem;
    color: #495057;
    margin-bottom: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.model-metadata span {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
}

.model-metadata .separator {
    color: #adb5bd;
    font-weight: 300;
}

.model-metadata i {
    color: #0dcaf0;
    font-size: 0.9rem;
}

.model-metadata .badge {
    background-color: #e9ecef;
    color: #495057;
    font-weight: normal;
    padding: 0.2rem 0.5rem;
}

.card-footer {
    padding: 0.4rem 0.75rem;
    border-top: 1px solid #e9ecef;
    background-color: #f0f2f4;
}

.embed-button, .delete-button {
    font-size: 0.75rem;
    padding: 0;
    color: #0dcaf0;
}

.embed-button:hover, .delete-button:hover {
    color: #0bacce;
}

.nav-user {
    display: flex;
    align-items: center;
}

#username {
    font-weight: 500;
}

.upload-preview {
    max-width: 100%;
    height: 200px;
    border: 2px dashed #dee2e6;
    border-radius: 4px;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.upload-preview:hover {
    border-color: #0d6efd;
}

.alert {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1050;
}

.model-viewer-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.model-controls {
    position: absolute;
    bottom: 10px;
    right: 10px;
    z-index: 10;
    display: none;
}

.model-preview:hover .model-controls {
    display: block;
}

/* New styles for model viewer page */
.model-viewer-large {
    width: 100%;
    height: 70vh;
    background-color: #f8f9fa;
    border-radius: 8px;
    overflow: hidden;
    position: relative;
}

.model-viewer-large #model-container {
    width: 100%;
    height: 100%;
}

.model-viewer-large canvas {
    width: 100% !important;
    height: 100% !important;
    outline: none;
}

.model-viewer-large .loading {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: #6c757d;
    font-size: 1.1rem;
    background-color: rgba(255, 255, 255, 0.9);
    padding: 1rem 2rem;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.embed-code-container {
    max-height: 200px;
    overflow-y: auto;
}

.embed-code-container pre {
    white-space: pre-wrap;
    word-wrap: break-word;
    margin: 0;
    font-size: 0.875rem;
}

.embed-button:hover {
    text-decoration: underline;
}

.model-viewer-large .toolbar button.active {
    background-color: rgba(0, 195, 255, 0.2);
    border-color: rgba(0, 195, 255, 0.6);
    color: rgba(0, 195, 255, 0.8);
    box-shadow: 0 0 15px rgba(0, 195, 255, 0.4);
}

.model-viewer-large .toolbar button.active:hover {
    background-color: rgba(0, 195, 255, 0.3);
    border-color: rgba(0, 195, 255, 0.8);
    box-shadow: 0 0 20px rgba(0, 195, 255, 0.6);
}

/* 场景设计相关样式 */
.model-item {
    transition: all 0.2s ease;
    border: 1px solid #dee2e6;
}

.model-item:hover {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    transform: translateY(-2px);
    border-color: #0d6efd;
}

.model-thumbnail-container {
    height: 80px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.model-thumbnail-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.placeholder-thumbnail {
    width: 100%;
    height: 100%;
    font-size: 0.8rem;
}

.image-item {
    transition: all 0.2s ease;
    cursor: pointer;
}

.image-item:hover {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    transform: translateY(-2px);
}

.image-preview {
    height: 120px;
    overflow: hidden;
}

.image-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 场景设计模式下的模型库样式调整 */
#modelLibrary .model-card {
    margin-bottom: 0.75rem;
}

#modelLibrary .model-preview {
    padding-top: 60%; /* 缩短高度，适应左侧边栏 */
}

#modelLibrary .card-body {
    padding: 0.5rem;
}

#modelLibrary .card-title {
    font-size: 0.85rem;
    margin-bottom: 0.25rem;
}

#modelLibrary .model-metadata {
    margin-bottom: 0.25rem;
    font-size: 0.7rem;
}

#sceneCanvas {
    cursor: default;
}

#sceneCanvas.drag-over {
    outline: 2px dashed #007bff;
    outline-offset: -2px;
}

/* 灯光控制面板样式 */
#lightingControlPanel {
    transition: all 0.3s ease;
    max-width: 300px;
}

#lightingControlPanel .btn-group {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

#lightingControlPanel .btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin: 2px;
    padding: 0;
    font-size: 1.2rem;
}

#lightingControlPanel .btn.active {
    background-color: rgba(0, 195, 255, 0.5);
    border-color: rgba(0, 195, 255, 1);
    box-shadow: 0 0 15px rgba(0, 195, 255, 0.8);
}

#lightingControlPanel .btn-info {
    margin-top: 10px;
    border-radius: 4px;
    height: auto;
    width: 100%;
    padding: 8px;
    font-size: 0.9rem;
}

/* 灯光辅助器样式 */
.light-helper-visible {
    opacity: 1;
    transition: opacity 0.3s ease;
}

.light-helper-hidden {
    opacity: 0.3;
    transition: opacity 0.3s ease;
}

/* 光源编辑模态框样式 */
#lightEditorModal .form-range {
    width: 100%;
}

#lightEditorModal .form-control-color {
    width: 100%;
    height: 40px;
}

/* 添加动画效果 */
@keyframes pulse-light {
    0% { transform: scale(1); opacity: 0.8; }
    50% { transform: scale(1.05); opacity: 1; }
    100% { transform: scale(1); opacity: 0.8; }
}

.light-pulse {
    animation: pulse-light 2s infinite ease-in-out;
}