/* Container */
.tr-container {
    max-width: 1000px;
    margin: 0 auto;
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

/* Steps */
.tr-steps {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
    border-bottom: 1px solid #eee;
    padding-bottom: 15px;
}
.tr-step {
    font-weight: bold;
    color: #ccc;
    flex: 1;
    text-align: center;
}
.tr-step.active {
    color: #0073aa;
    border-bottom: 2px solid #0073aa;
}

/* Content visibility */
.tr-step-content {
    display: none;
    animation: fadeIn 0.3s ease;
}
.tr-step-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Upload Area */
.tr-upload-area {
    border: 2px dashed #ccc;
    padding: 60px;
    text-align: center;
    border-radius: 4px;
    background: #fafafa;
    cursor: pointer;
    transition: all 0.2s;
}
.tr-upload-area:hover, .tr-upload-area.dragover {
    border-color: #0073aa;
    background: #f0f8ff;
}
.tr-small {
    color: #888;
    font-size: 0.9em;
    margin-bottom: 20px;
}

/* Split Layout */
.tr-split-layout {
    display: flex;
    gap: 30px;
}
.tr-preview-column {
    flex: 1;
    background: #f0f0f0;
    border-radius: 4px;
    overflow: hidden;
    position: relative;
    min-height: 400px;
}
.tr-form-column {
    flex: 1;
}
#tr-3d-viewer {
    width: 100%;
    height: 400px;
    position: relative;
    display: block;
}

#tr-3d-viewer canvas {
    display: block;
    width: 100% !important;
    height: 100% !important;
}
.tr-controls-info {
    position: absolute;
    bottom: 10px;
    left: 10px;
    background: rgba(255,255,255,0.8);
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 0.8em;
}

/* Form Elements */
.tr-form-group {
    margin-bottom: 15px;
}
.tr-form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 600;
}
.tr-form-group input, .tr-form-group textarea, .tr-form-group select {
    width: 100%;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-sizing: border-box;
}
.tr-row {
    display: flex;
    gap: 15px;
}
.tr-form-group.half {
    flex: 1;
}

/* Buttons */
.tr-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1em;
    transition: background 0.2s;
}
.tr-btn.primary {
    background: #0073aa;
    color: #fff;
}
.tr-btn.primary:hover {
    background: #005177;
}
.tr-btn.secondary {
    background: #ddd;
    color: #333;
}
.tr-btn.secondary:hover {
    background: #ccc;
}
.tr-actions {
    display: flex;
    justify-content: space-between;
    margin-top: 20px;
}

/* Success */
.tr-success-message {
    text-align: center;
    padding: 50px;
}

/* Loader */
.tr-upload-status {
    margin-top: 15px;
    text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
    .tr-split-layout {
        flex-direction: column;
    }
    #tr-3d-viewer {
        height: 300px;
    }
}
/* Error Toast */
.tr-error-toast {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #fff;
    border-left: 4px solid #dc3232;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-radius: 4px;
    padding: 0;
    z-index: 9999;
    transform: translateX(120%);
    transition: transform 0.3s ease-out;
    max-width: 300px;
}

.tr-error-toast.show {
    transform: translateX(0);
}

.tr-error-content {
    padding: 15px 40px 15px 20px;
    position: relative;
    color: #333;
    font-size: 14px;
    line-height: 1.4;
}

.tr-error-close {
    position: absolute;
    top: 5px;
    right: 5px;
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: #999;
    padding: 0 5px;
}

.tr-error-close:hover {
    color: #333;
}