.preview-container {
    padding: 1.5rem;
    min-height: 280px;
    box-shadow: var(--shadow-sm);
}

.preview-title {
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text);
    text-align: center;
    font-size: 1.1rem;
}

.preview-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.preview-placeholder {
    color: var(--text-muted);
    text-align: center;
}

.preview-placeholder i {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    opacity: 0.4;
    color: var(--primary);
}

.preview-placeholder p {
    margin: 0;
    font-size: 0.9rem;
}

.preview-sizes {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.preview-size {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: var(--border-radius);
    background: var(--background-light);
    transition: var(--transition);
}

.preview-size:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-sm);
}

.preview-size-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    background: var(--background-light);
    transition: var(--transition);
    cursor: pointer;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--primary);
    background: rgba(37, 99, 235, 0.05);
}

.upload-zone i {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.control-group {
    padding: 1rem;
    margin-bottom: 1rem;
}

.control-group-title {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
}

.control-group-title i {
    margin-right: 0.5rem;
    color: var(--primary);
}

.color-input-group {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.range-input-group {
    position: relative;
}

.range-value {
    position: absolute;
    right: 0;
    top: -1.5rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    background: var(--background-card);
    padding: 0.2rem 0.5rem;
    border-radius: 3px;
    border: 1px solid var(--border);
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

.symbol-btn.selected {
    background-color: var(--primary) !important;
    color: white !important;
    border-color: var(--primary) !important;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.icon-preview {
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.form-control-color {
    width: 60px;
    height: 38px;
    padding: 0;
    border: 2px solid var(--border);
}

@media (max-width: 768px) {
    .preview-container {
        min-height: 150px;
        padding: 1rem;
    }
    
    .preview-placeholder i {
        font-size: 2rem;
    }
}