/* 3D Viewer Component */
.threejs-viewer {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: 400px;
    background-color: var(--surface-color, #f8f9fa);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    border: 1px solid var(--border-color, #e9ecef);
}

.threejs-viewer canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
    border-radius: inherit;
}

.threejs-viewer.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--surface-color, #f8f9fa);
}

.threejs-viewer .loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--text-muted, #6c757d);
}

.threejs-viewer .loading-spinner .spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color, #e9ecef);
    border-top: 3px solid var(--primary-color, #007bff);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.threejs-viewer .viewer-controls {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    z-index: 10;
}

.threejs-viewer .viewer-controls .control-btn {
    width: 36px;
    height: 36px;
    padding: 0;
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--border-color, #e9ecef);
    border-radius: var(--border-radius-sm);
    color: var(--text-color, #333);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.threejs-viewer .viewer-controls .control-btn:hover {
    background: rgba(255, 255, 255, 1);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.threejs-viewer .viewer-controls .control-btn:active {
    transform: translateY(0);
}

.threejs-viewer .viewer-controls .control-btn.active {
    background: var(--primary-color, #007bff);
    color: white;
    border-color: var(--primary-color, #007bff);
}

.threejs-viewer .viewer-info {
    position: absolute;
    bottom: var(--spacing-sm);
    left: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.7);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-sm);
    font-family: var(--font-family-mono, 'Courier New', monospace);
    backdrop-filter: blur(4px);
    z-index: 10;
}

.threejs-viewer .viewer-info.hidden {
    display: none;
}

.threejs-viewer .error-message {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--danger-color, #dc3545);
    background: rgba(255, 255, 255, 0.95);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--danger-color, #dc3545);
    max-width: 80%;
    z-index: 20;
}

.threejs-viewer .error-message .error-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.threejs-viewer .error-message h4 {
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--danger-color, #dc3545);
}

.threejs-viewer .error-message p {
    margin: 0;
    color: var(--text-muted, #6c757d);
}

/* 3D Viewer in Modal */
.modal .threejs-viewer {
    min-height: 300px;
    height: 400px;
}

.modal-lg .threejs-viewer {
    height: 500px;
}

/* Object Preview Container */
.object-preview {
    position: relative;
    width: 100%;
    height: 400px;
    margin-bottom: var(--spacing-lg);
}

.object-preview .preview-container {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--surface-color, #f8f9fa);
    border: 2px dashed var(--border-color, #e9ecef);
    border-radius: var(--border-radius-md);
    color: var(--text-muted, #6c757d);
    transition: all var(--transition-fast);
}

.object-preview .preview-container.has-viewer {
    border: none;
    background: transparent;
}

.object-preview .preview-placeholder {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    opacity: 0.5;
}

/* Responsive Design */
@media (max-width: 768px) {
    .threejs-viewer .viewer-controls {
        top: var(--spacing-xs);
        right: var(--spacing-xs);
    }
    
    .threejs-viewer .viewer-controls .control-btn {
        width: 32px;
        height: 32px;
    }
    
    .threejs-viewer .viewer-info {
        bottom: var(--spacing-xs);
        left: var(--spacing-xs);
        font-size: 0.75rem;
        padding: var(--spacing-xs);
    }
    
    .modal .threejs-viewer {
        height: 300px;
    }
    
    .modal-lg .threejs-viewer {
        height: 350px;
    }
    
    .object-preview {
        height: 300px;
    }
}

/* Object Card Components */
.object-card {
    background: var(--surface-color, #fff);
    border: 1px solid var(--border-color, #e9ecef);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.object-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color, #007bff);
}

.object-card .object-thumbnail {
    position: relative;
    height: 120px;
    background: var(--surface-alt, #f8f9fa);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
}

.object-card .object-thumbnail i {
    font-size: 2.5rem;
    color: var(--text-muted, #6c757d);
    opacity: 0.5;
}

.object-card .object-type-badge {
    position: absolute;
    top: var(--spacing-xs);
    right: var(--spacing-xs);
    background: var(--primary-color, #007bff);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
}

.object-card .object-info {
    margin-bottom: var(--spacing-sm);
}

.object-card .object-name {
    margin: 0 0 var(--spacing-xs) 0;
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    color: var(--text-color, #333);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.object-card .object-details {
    margin: 0;
    font-size: var(--font-size-sm);
    color: var(--text-muted, #6c757d);
}

.object-card .object-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-xs);
}

.object-card .object-tags .tag {
    background: var(--surface-alt, #f8f9fa);
    color: var(--text-muted, #6c757d);
    padding: 2px var(--spacing-xs);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    border: 1px solid var(--border-color, #e9ecef);
}

.object-card .object-actions {
    display: flex;
    gap: var(--spacing-xs);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.object-card:hover .object-actions {
    opacity: 1;
}

.object-card .object-actions .btn {
    flex: 1;
}

/* Objects Grid */
.objects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    padding: var(--spacing-md) 0;
}

/* Objects List/Table */
.objects-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface-color, #fff);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.objects-table th,
.objects-table td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--border-color, #e9ecef);
}

.objects-table th {
    background: var(--surface-alt, #f8f9fa);
    font-weight: var(--font-weight-medium);
    color: var(--text-color, #333);
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.objects-table tbody tr:hover {
    background: var(--surface-alt, #f8f9fa);
}

.objects-table .object-name-cell {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.objects-table .object-icon {
    color: var(--text-muted, #6c757d);
}

.objects-table .type-badge {
    background: var(--primary-color, #007bff);
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
}

.objects-table .action-buttons {
    display: flex;
    gap: var(--spacing-xs);
}

.objects-table .action-buttons .btn {
    padding: var(--spacing-xs);
    min-width: auto;
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border-color, #e9ecef);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--primary-color, #007bff);
    background: rgba(0, 123, 255, 0.05);
}

.upload-area i {
    font-size: 3rem;
    color: var(--text-muted, #6c757d);
    margin-bottom: var(--spacing-sm);
}

.upload-area h4 {
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--text-color, #333);
}

.upload-area p {
    margin: 0;
    color: var(--text-muted, #6c757d);
}

.upload-area small {
    display: block;
    margin-top: var(--spacing-sm);
    color: var(--text-muted, #6c757d);
}

/* Upload Progress */
.upload-progress {
    margin-top: var(--spacing-md);
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--surface-alt, #f8f9fa);
    border-radius: var(--border-radius-sm);
    overflow: hidden;
    margin-bottom: var(--spacing-sm);
}

.progress-fill {
    height: 100%;
    background: var(--primary-color, #007bff);
    transition: width var(--transition-normal);
    width: 0%;
}

.progress-text {
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--text-muted, #6c757d);
    margin: 0;
}

/* Selected Files */
.selected-files {
    margin-top: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--surface-alt, #f8f9fa);
    border-radius: var(--border-radius-md);
}

.selected-files h5 {
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--text-color, #333);
}

.selected-files ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.selected-files li {
    padding: var(--spacing-xs) 0;
    color: var(--text-muted, #6c757d);
    font-size: var(--font-size-sm);
}

/* Empty States */
.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--text-muted, #6c757d);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
    opacity: 0.5;
}

.empty-state h3 {
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--text-color, #333);
}

.empty-state p {
    margin: 0 0 var(--spacing-md) 0;
}

.empty-state-inline {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    color: var(--text-muted, #6c757d);
}

.empty-state-inline i {
    font-size: 1.5rem;
    opacity: 0.5;
}

/* Responsive Design for Object Cards */
@media (max-width: 768px) {
    .objects-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: var(--spacing-md);
    }
    
    .object-card .object-actions {
        opacity: 1;
    }
    
    .objects-table {
        font-size: var(--font-size-sm);
    }
    
    .objects-table th,
    .objects-table td {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .objects-table .action-buttons .btn {
        padding: 2px;
        font-size: var(--font-size-xs);
    }
}

/* Button Components */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    text-align: center;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    user-select: none;
    white-space: nowrap;
}

.btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Button Sizes */
.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

/* Button Variants */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    border-color: var(--primary-dark);
    color: var(--white);
}

.btn-secondary {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--white);
}

.btn-secondary:hover {
    background-color: var(--gray-600);
    border-color: var(--gray-600);
    color: var(--white);
}

.btn-success {
    background-color: var(--success-color);
    border-color: var(--success-color);
    color: var(--white);
}

.btn-success:hover {
    background-color: #218838;
    border-color: #1e7e34;
    color: var(--white);
}

.btn-danger {
    background-color: var(--danger-color);
    border-color: var(--danger-color);
    color: var(--white);
}

.btn-danger:hover {
    background-color: #c82333;
    border-color: #bd2130;
    color: var(--white);
}

.btn-outline {
    background-color: transparent;
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-outline:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
}

.btn-outline-secondary {
    background-color: transparent;
    border-color: var(--secondary-color);
    color: var(--secondary-color);
}

.btn-outline-secondary:hover {
    background-color: var(--secondary-color);
    border-color: var(--secondary-color);
    color: var(--white);
}

/* Form Components */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
    color: var(--gray-700);
}

.form-control {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-base);
    color: var(--gray-700);
    background-color: var(--white);
    background-clip: padding-box;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    color: var(--gray-700);
    background-color: var(--white);
    border-color: var(--primary-color);
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

.form-control::placeholder {
    color: var(--gray-500);
    opacity: 1;
}

.form-control:disabled {
    background-color: var(--gray-200);
    opacity: 1;
}

/* Select Component */
.form-select {
    display: block;
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-xl) var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-base);
    color: var(--gray-700);
    background-color: var(--white);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m1 6 7 7 7-7'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    background-size: 16px 12px;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    appearance: none;
}

.form-select:focus {
    border-color: var(--primary-color);
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
}

/* Card Components */
.card {
    position: relative;
    display: flex;
    flex-direction: column;
    min-width: 0;
    word-wrap: break-word;
    background-color: var(--white);
    background-clip: border-box;
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
}

.card-header {
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: 0;
    background-color: var(--gray-100);
    border-bottom: 1px solid var(--gray-200);
    border-top-left-radius: var(--border-radius-lg);
    border-top-right-radius: var(--border-radius-lg);
}

.card-body {
    flex: 1 1 auto;
    padding: var(--spacing-lg);
}

.card-footer {
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--gray-100);
    border-top: 1px solid var(--gray-200);
    border-bottom-left-radius: var(--border-radius-lg);
    border-bottom-right-radius: var(--border-radius-lg);
}

.card-title {
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
}

.card-subtitle {
    margin-top: -var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}

.card-text:last-child {
    margin-bottom: 0;
}

/* Modal Components */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    z-index: var(--z-modal);
    display: none;
    width: 100%;
    height: 100%;
    overflow-x: hidden;
    overflow-y: auto;
    outline: 0;
}

.modal.show {
    display: block;
}

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    z-index: var(--z-modal-backdrop);
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.5);
}

.modal-dialog {
    position: relative;
    width: auto;
    margin: var(--spacing-lg);
    pointer-events: none;
}

.modal-content {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
    pointer-events: auto;
    background-color: var(--white);
    background-clip: padding-box;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    outline: 0;
}

.modal-header {
    display: flex;
    flex-shrink: 0;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
    border-top-left-radius: var(--border-radius-lg);
    border-top-right-radius: var(--border-radius-lg);
}

.modal-title {
    margin-bottom: 0;
    line-height: var(--line-height-base);
}

.modal-body {
    position: relative;
    flex: 1 1 auto;
    padding: var(--spacing-lg);
}

.modal-footer {
    display: flex;
    flex-wrap: wrap;
    flex-shrink: 0;
    align-items: center;
    justify-content: flex-end;
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--gray-200);
    border-bottom-right-radius: var(--border-radius-lg);
    border-bottom-left-radius: var(--border-radius-lg);
    gap: var(--spacing-sm);
}

.btn-close {
    box-sizing: content-box;
    width: 1em;
    height: 1em;
    padding: 0.25em 0.25em;
    color: var(--gray-500);
    background: transparent url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='%23000'%3e%3cpath d='m.235.624 15.14 15.14L16 15.14.624.235z'/%3e%3cpath d='m15.14.624L0 15.764 .235 16 15.764.235z'/%3e%3c/svg%3e") center/1em auto no-repeat;
    border: 0;
    border-radius: var(--border-radius-md);
    opacity: 0.5;
    cursor: pointer;
    transition: opacity var(--transition-fast);
}

.btn-close:hover {
    opacity: 0.75;
}

/* Alert Components */
.alert {
    position: relative;
    padding: var(--spacing-md) var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    border: 1px solid transparent;
    border-radius: var(--border-radius-md);
}

.alert-primary {
    color: #084298;
    background-color: #cff4fc;
    border-color: #b6effb;
}

.alert-secondary {
    color: #41464b;
    background-color: #e2e3e5;
    border-color: #d3d6d8;
}

.alert-success {
    color: #0f5132;
    background-color: #d1e7dd;
    border-color: #badbcc;
}

.alert-danger {
    color: #842029;
    background-color: #f8d7da;
    border-color: #f5c2c7;
}

.alert-warning {
    color: #664d03;
    background-color: #fff3cd;
    border-color: #ffecb5;
}

.alert-info {
    color: #055160;
    background-color: #d1ecf1;
    border-color: #bee5eb;
}

/* Loading Spinner */
.spinner {
    display: inline-block;
    width: 1rem;
    height: 1rem;
    vertical-align: -0.125em;
    border: 0.125em solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spinner-border 0.75s linear infinite;
}

.spinner-lg {
    width: 2rem;
    height: 2rem;
    border-width: 0.25em;
}

@keyframes spinner-border {
    to {
        transform: rotate(360deg);
    }
}

/* Badge Components */
.badge {
    display: inline-block;
    padding: 0.25em 0.5em;
    font-size: 0.75em;
    font-weight: var(--font-weight-bold);
    line-height: 1;
    color: var(--white);
    text-align: center;
    white-space: nowrap;
    vertical-align: baseline;
    border-radius: var(--border-radius-md);
}

.badge-primary {
    background-color: var(--primary-color);
}

.badge-secondary {
    background-color: var(--secondary-color);
}

.badge-success {
    background-color: var(--success-color);
}

.badge-danger {
    background-color: var(--danger-color);
}

.badge-warning {
    background-color: var(--warning-color);
    color: var(--gray-800);
}

.badge-info {
    background-color: var(--info-color);
}

/* Responsive Utilities */
@media (min-width: 576px) {
    .modal-dialog {
        max-width: 500px;
        margin: var(--spacing-xl) auto;
    }
}

@media (min-width: 992px) {
    .modal-lg {
        max-width: 800px;
    }
}

@media (min-width: 1200px) {
    .modal-xl {
        max-width: 1140px;
    }
}